CN105465643A - LED Straight Tube Light - Google Patents

Abstract

An LED straight tube lamp comprises: a lamp tube and a lamp holder arranged at one end of the lamp tube; a power supply, including a rigid circuit board, arranged in the lamp holder; a lamp board, arranged in the lamp tube, with at least one light source provided on the lamp board; the light source and the power supply are electrically connected through the lamp board; the lamp board includes a flexible circuit board, the length of the flexible circuit board is greater than the length of the rigid circuit board, and the rigid circuit board and the flexible circuit board are adhered to each other to form a circuit board assembly.

Description

LED Straight Tube Light

This application claims the priority of the Chinese patent application submitted to China Patent Office on September 28, 2014, with application number 201410507660.9 and title of invention "A LED Fluorescent Lamp", the entire content of which is incorporated in this application by reference.

This application claims the priority of the Chinese patent application with the application number 201410508899.8 and the title of the invention "a method for solidifying welding paste powder" submitted to the China Patent Office on September 28, 2014, the entire contents of which are incorporated in this application by reference.

This application claims the priority of the Chinese patent application with the application number 201410623355.6 and the title of the invention "an LED fluorescent lamp" submitted to the China Patent Office on November 06, 2014, the entire contents of which are incorporated in this application by reference.

This application claims the priority of the Chinese patent application with the application number 201410734425.5 and the title of the invention "LED fluorescent lamp" submitted to the China Patent Office on December 05, 2014, the entire contents of which are incorporated in this application by reference.

This application claims the priority of the Chinese patent application with the application number 201510075925.7 and the invention name "LED fluorescent lamp" submitted to the China Patent Office on February 12, 2015, the entire contents of which are incorporated in this application by reference.

This application claims the priority of the Chinese patent application submitted to China Patent Office on March 27, 2015, with application number 201510136796.8 and title of invention "Method for Manufacturing LED Fluorescent Lamp", the entire contents of which are incorporated in this application by reference.

This application claims the priority of the Chinese patent application submitted to the China Patent Office on June 26, 2015, with the application number 201510372375.5, and the title of the invention is "LED lamp current control method and its control circuit", the entire content of which is incorporated by reference In this application.

This application claims the priority of the Chinese patent application with the application number 201510259151.3 and the title of the invention "LED lamp" submitted to the China Patent Office on May 19, 2015, the entire contents of which are incorporated in this application by reference.

This application claims the priority of the Chinese patent application submitted to China Patent Office on June 17, 2015, with application number 201510338027.6, and the title of the invention is "A LED Fluorescent Lamp", the entire content of which is incorporated in this application by reference.

This application claims the priority of the Chinese patent application submitted to China Patent Office on June 26, 2015, with application number 201510373492.3, and the title of the invention is "LED fluorescent lamp (light panel welding)", the entire content of which is incorporated in this application by reference.

This application claims the priority of the Chinese patent application with the application number 201510482944.1 and the invention name "LED fluorescent lamp" submitted to the China Patent Office on August 07, 2015, the entire contents of which are incorporated in this application by reference.

This application claims the priority of the Chinese patent application with the application number 201510483475.5 and the invention name "LED fluorescent lamp" submitted to the China Patent Office on August 8, 2015, the entire contents of which are incorporated in this application by reference.

This application claims the priority of the Chinese patent application with the application number 201510555543.4 and the invention name "LED fluorescent lamp" submitted to the China Patent Office on September 2, 2015, the entire contents of which are incorporated in this application by reference.

technical field

The invention relates to the field of lighting appliances, in particular to an LED straight tube lamp and its components including a light source, an electronic component and a lamp holder.

Background technique

LED lighting technology is rapidly developing to replace traditional incandescent and fluorescent lamps. Compared with fluorescent lamps filled with inert gas and mercury, LED straight tube lamps do not need to be filled with mercury. Therefore, in a variety of lighting systems for home or workplace dominated by lighting options such as traditional fluorescent bulbs and tubes, it is no surprise that LED straight tube lights have gradually become a highly anticipated lighting option. The advantages of LED straight tube lights include increased durability and lifespan as well as lower energy consumption. Therefore, after all factors are considered, LED straight tube lights will be a cost-effective lighting option.

Known LED straight tube lamps generally include a lamp tube, a circuit board with a light source inside the lamp tube, and lamp holders at both ends of the lamp tube. A power supply is provided in the lamp holder, and the light source and the power supply are electrically connected through a circuit board. . However, the existing LED straight tube lamps still have the following quality problems to be solved:

First, the circuit board is generally a rigid board. When the lamp tube is broken, especially when it is partially broken, the entire LED straight tube lamp is still in a straight tube state. Users will mistakenly think that the lamp tube can still be used, so they can go Installation may easily lead to leakage and electric shock accidents.

Second, in the existing LED straight tube lamps, metal wires are generally used to achieve electrical connection between the rigid circuit board and the lamp cap through wire bonding. During the manufacture, transportation and use of LED straight tube lamps, the metal wires It is easy to be damaged or even broken due to moving, making the LED straight tube lamp unusable.

Third, in the existing LED straight tube lamps, hot melt adhesive or silica gel is usually used for bonding between the lamp cap and the lamp tube. Glue will affect the appearance and cause shading problems; if you want to remove excess glue, you need to use a lot of manual wiping in the manufacturing process, causing production obstacles and low efficiency. In addition, the poor heat dissipation of the power supply components in the lamp cap will easily lead to the formation of a high temperature environment in the lamp cap, thereby reducing the service life of the hot melt adhesive and reducing the adhesion between the lamp tube and the lamp cap, resulting in a decrease in the reliability of the LED straight tube lamp.

Fourth, the lamp tube in the prior art is generally a uniform cylinder, and the lamp cap is sleeved outside the lamp tube and glued to the lamp tube. Therefore, the outer diameter of the lamp cap is larger than that of the lamp tube. During packaging, because the packaging support is generally a uniform columnar box, it can only be in contact with the lamp cap, making the lamp cap the only stress point, resulting in easy rupture of the connection between the lamp cap and the lamp tube during transportation. The straight tube lamp disclosed in the US patent application publication number US2014226320A is an example. Furthermore, the straight tube lamp disclosed in the Chinese patent application with publication number CN102518972 is another example. For this part, the U.S. patent application with the publication number US20100103673A discloses a LED straight tube lamp, the lamp tube is a glass lamp tube, and the lamp head is inserted into the glass lamp tube, so that the two ends of the glass lamp tube bear internal stress It is easier to break when subjected to external force at both ends. This will lead to product defects and quality problems.

Fifth, in the existing LED straight tube lamps, visual graininess often occurs. The multiple LED grains arranged on the circuit board inside the lamp tube belong to the point light source, because of the characteristics of the point light source, without proper optical treatment, the illumination in the entire lamp tube is uneven. Therefore, for observers of LED straight tube lamps, the entire lamp tube presents a grainy or uneven lighting effect, which affects visual comfort and even narrows the viewing angle range of the outgoing light. In other words, the quality and aesthetic requirements of general consumers will not be met. To solve this problem, the Chinese patent application with the application number CN201320748271.6 discloses that a diffusion tube is placed in the glass tube in order to reduce the visual graininess. However, the arrangement of the diffusion tube adds an interface to the light propagation path, which will increase the probability of total reflection of the light during propagation and reduce the light output efficiency. In addition, the optical absorption and rotation of the diffuser will reduce the light output efficiency.

In view of the above problems, the present invention and its embodiments are proposed below.

Contents of the invention

The invention provides a new LED straight tube lamp to solve the above problems.

The present invention provides an LED straight tube lamp, which includes a lamp tube and a lamp cap set on the lamp tube, the lamp cap includes an insulating tube, and a heat conduction part fixed on the outer peripheral surface of the insulating tube; The heat conducting part and the lamp tube are fixed by bonding.

The present invention further provides an LED straight tube lamp, which comprises a lamp tube and two lamp caps arranged outside the two ends of the lamp tube, and the sizes of the two lamp caps can be the same or different. When the sizes of the two lamp caps are different, optionally, the size of the smaller lamp cap is 30% to 80% of the size of the larger lamp cap.

Optionally, the lamp tube includes a main body area and end areas respectively located at both ends of the main body area, the outer diameter of the end areas is smaller than the outer diameter of the main body area, and the lamp cap is sheathed on the end areas In addition, the outer diameter of the lamp cap corresponding to the end area is equal to the outer diameter of the main body area. Preferably, the difference between the outer diameter of the corresponding end region and the outer diameter of the body region is in the range of 1 mm to 10 mm. More preferably, the difference between the outer diameter of the corresponding end region and the outer diameter of the body region is in the range of 2 mm to 7 mm.

Optionally, there is a transition region between the end region and the body region.

Optionally, both ends of the transition zone are arc-shaped, and the outer surface of the transition zone close to the body zone is in a state of tension, and the inner surface is in a state of compression; the outer surface of the transition zone close to the end zone is in a state of compression state, the inner surface is under tension. The direction of the normal vector of the arc surface connecting the transition area and the body area is towards the outside of the lamp tube, and the direction of the normal vector of the arc surface connecting the transition area and the end area is towards the inside of the lamp tube.

Optionally, the curvature radius R1 of the arc surface connecting the transition zone and the body zone is smaller than the curvature radius R2 of the arc surface connecting the transition zone and the end zone, and the ratio R1:R2 of R1 to R2 is 1 :1.5 to 1:10.

Optionally, there is no gap between the body area and the lamp cap.

Optionally, there is an arc surface between the outer surface of the transition area and the outer surface of the body area, the angle between the arc surface is greater than 90 degrees, and the outer surface of the end area is a continuous surface And maintain parallel with the outer surface of the body region.

Preferably, the transition zone has a length of 1 mm to 4 mm.

Optionally, the lamp tube is a glass lamp tube or a plastic lamp tube.

Optionally, toward the direction of the lamp tube in the axial direction, the insulating tube includes a first tube and a second tube connected along its axial or length direction, and the outer diameter of the second tube is smaller than the Describe the outer diameter of the first tube. Preferably, the difference in outer diameter between the first tube and the second tube is in the range of 0.15 mm to 0.3 mm.

Optionally, the heat conduction part is disposed on the outer peripheral surface of the second tube, and the outer surface of the heat conduction part is flush with the outer peripheral surface of the first tube.

Optionally, the second tube is at least partially sheathed outside the lamp tube, and the heat conducting part and the lamp tube are bonded by hot melt adhesive.

Optionally, one or more notches are formed on the end of the second tube away from the first tube, and the plurality of notches are arranged along the circumferential direction.

Preferably, the ratio of the length of the heat conducting portion along the axial or longitudinal direction of the lamp cap to the axial length of the insulating tube is between 1:2.5 and 1:5.

Optionally, the length of the lamp tube protruding into the lamp cap is one-third to two-thirds of the length of the heat conducting part in the axial or longitudinal direction.

Preferably, the heat conduction part is a metal sheet.

Preferably, the heat conduction part is in the shape of a tube.

Preferably, the insulating pipe is a plastic pipe.

The present invention also provides a method for connecting a lamp tube and a lamp cap of an LED straight tube lamp, which includes the following steps: coating a hot melt adhesive on the inner surface of the lamp cap; setting the lamp cap on the end of the lamp tube; The heating device causes the hot melt adhesive to heat and expand to fill between the inner surface of the lamp cap and the outer surface of the end of the lamp tube.

The present invention further provides an LED straight tube lamp, which includes a lamp tube and a lamp cap set on the lamp tube, the lamp cap includes an insulating tube, and the insulating tube includes a A first tube, a second tube, and a heat conduction part fixed on the outer peripheral surface of the insulating tube, the second tube, the inner surface of the heat conduction part, the outer surface of the end zone, and the outer surface of the transition zone A containing space is formed.

Optionally, the hot melt adhesive is located in the accommodating space. Preferably, the hot melt adhesive does not completely fill the accommodating space. Preferably, part of the hot melt adhesive is located in the space between the inner surface of the second tube and the outer surface of the end zone.

Optionally, the position where the hot melt glue is filled in the accommodating space passes through a first imaginary plane perpendicular to the axial direction of the lamp tube, and along the radial direction, the first imaginary plane passes through the heat conducting part, the hot melt adhesive and the outer peripheral surface of the lamp tube.

Optionally, the position where the hot melt glue is filled in the accommodating space passes through a second virtual plane perpendicular to the axial direction of the lamp tube, and along the radial direction, the second virtual plane passes through the heat conducting portion, the second tube, the hot melt adhesive, and the end region.

Optionally, the position where the hot melt glue is filled in the accommodating space passes through a first imaginary plane perpendicular to the axial direction of the lamp tube, and along the radial direction, the first imaginary plane passes through the heat conducting part, the hot melt adhesive and the outer peripheral surface of the lamp tube; the position where the hot melt adhesive is filled in the accommodating space also passes through a second imaginary plane perpendicular to the axial direction of the lamp tube, along the radial direction direction, the second virtual plane passes through the heat conducting part, the second tube, the hot melt adhesive and the terminal area in sequence.

Optionally, the main components of the hot melt adhesive include: phenolic resin 2127#, shellac, rosin, calcite powder, zinc oxide, ethanol, when the hot melt adhesive is at a temperature of 200-250 degrees Celsius, The volume expands 1 to 1.3 times compared to room temperature.

The present invention further provides an LED straight tube lamp, which includes a lamp tube and a lamp cap disposed outside the end area of the lamp tube, and the lamp cap includes: an insulating tube for being sleeved outside the end area of the lamp tube ; a magnetically conductive metal part, fixed on the inner peripheral surface of the insulating tube; the magnetically conductive metal part is at least partially located between the inner peripheral surface of the insulating tube and the end area of the lamp tube. Preferably, the inner diameter of the magnetically conductive metal part is larger than the outer diameter of the end area of the lamp tube.

Optionally, the magnetically conductive metal part and the end area of the lamp tube are fixed by bonding, for example, by hot melt adhesive.

Optionally, all of the magnetically conductive metal parts are located in the insulating tube, and the hot melt adhesive covers the entire inner surface of the magnetically conductive metal parts.

Optionally, the inner peripheral surface of the insulating tube further includes a support part protruding radially inward, and the magnetically permeable metal part leans against the support part in the axial direction. Preferably, the thickness of the support portion along the radial direction is 1 mm to 2 mm.

Optionally, the inner peripheral surface of the insulating tube further includes a protrusion projecting radially inward, and the protrusion is located on the outer peripheral surface of the magnetic conductive metal part and the inner surface of the insulating tube. between the peripheral surfaces, so as to form a gap between the outer peripheral surface of the magnetic conductive metal part and the inner peripheral surface of the insulating tube; the thickness of the protruding part is smaller than that of the supporting part. Preferably, the thickness of the protruding part is 0.2 mm to 1 mm.

Optionally, the protruding portion is in the form of a ring extending along the circumference of the insulating tube; or, the protruding portion includes a plurality of protrusions, and the plurality of protrusions are arranged around the inner peripheral surface of the insulating tube.

Optionally, the plurality of protrusions are arranged at equal intervals around the inner peripheral surface of the insulating tube along the circumferential direction.

Optionally, the plurality of protrusions are arranged at intervals at unequal distances around the inner peripheral surface of the insulating tube along the circumferential direction.

The present invention also provides a lamp holder for LED straight tube lamps, the lamp holder includes: an insulating tube, used to be sleeved on the end area of a lamp tube; a magnetically conductive metal part, fixed on the insulating tube On the inner peripheral surface: a hot melt adhesive covers the inner peripheral surface of the surface of the magnetically conductive metal part.

Optionally, the hot melt adhesive completely covers the inner peripheral surface of the magnetically conductive metal part.

Optionally, the magnetically conductive metal piece is ring-shaped.

Optionally, the magnetically conductive metal piece has at least one hole. Preferably, the area of the holes accounts for 10% to 50% of the surface area of the magnetically conductive metal piece.

Optionally, there are plural holes, which are arranged at intervals of equal distance or at intervals of unequal distance along the circumference of the lamp cap.

Optionally, the surface of the magnetically permeable metal part facing the insulating tube has indentations or embossments.

Optionally, the embossment protrudes from the inner surface of the magnetically conductive metal part to the outer surface.

Optionally, the indentation is recessed from the outer surface to the inner surface of the magnetically conductive metal part.

Optionally, the magnetically conductive metal part is in the shape of a tube coaxial with the insulating tube.

Optionally, the magnetically conductive metal piece is a circular ring or a non-circular ring, such as an oval ring.

Optionally, the hot melt adhesive is directly mixed with a predetermined proportion of high magnetic permeability material powder, and after an external heating device is energized, the high magnetic permeability material powder evenly distributed in the hot melt adhesive is charged, thereby making the hot melt The glue heats up, the hot melt glue absorbs the heat and expands and flows, then cools and solidifies to achieve the purpose of fixing the lamp cap to the lamp tube.

Therefore, the present invention further provides a hot-melt adhesive for LED straight tube lamps, characterized in that the hot-melt adhesive includes: phenolic resin 2127#, shellac, rosin, calcite powder, zinc oxide, ethanol, and high Magnetically conductive powder, wherein the volume ratio of the high magnetically conductive powder to the calcite powder is 1:3 to 1:1, and the volume of the hot melt adhesive at a temperature of 200-250 degrees is the volume of the hot melt adhesive 1 to 1.3 times the volume at room temperature.

Preferably, the relative permeability of the high magnetic permeability material powder ranges from 10 ² to 10 ⁶ .

Preferably, the material of the high magnetic permeability material powder is one selected from the mixture group consisting of iron, nickel, cobalt and their alloys.

Preferably, the weight percentage of the high magnetic permeability material powder in the hot melt adhesive is 10% to 50%.

Preferably, the average particle size of the high magnetic permeability material powder is 1 micron to 30 microns.

Optionally, the high magnetic permeability material powder in the hot melt adhesive forms a closed circuit within an electromagnetic field range.

Optionally, a single particle of the high magnetic permeability material powder in the hot melt adhesive is charged within an electromagnetic field range.

Optionally, the hot melt adhesive has fluidity at a temperature of 200 to 250 degrees Celsius.

Optionally, the hot melt adhesive is heated to a temperature of 200 to 250 degrees Celsius, and then solidified after being cooled.

Optionally, the hot melt adhesive is cured immediately after being heated to a temperature of 200 to 250 degrees Celsius.

Optionally, the external heating device is an induction coil, the induction coil is connected to a power supply, and forms an electromagnetic field after being energized. The electric current makes the magnetic metal parts heat up, and conducts the heat to the hot melt adhesive.

Optionally, the power supply passes through a power amplifying unit before flowing into the induction coil, and the power amplifying unit amplifies the power of the alternating current by 1 to 2 times.

Optionally, the induction coil is rolled into a ring coil structure by a metal wire with a width of 5mm to 6mm, and the diameter of the ring coil structure is about 30mm to 35mm.

Preferably, the induction coil is mainly made of copper.

Optionally, the heating temperature of the magnetically permeable metal part can reach 250 to 300 degrees Celsius.

Optionally, the heating temperature of the hot melt adhesive can reach 200 to 250 degrees Celsius.

Optionally, the induction coil is placed at a fixed position and does not move, the lamp head is moved and enters the induction coil, the hot melt adhesive expands and flows after being heated, and then the lamp head is pulled away from the induction coil, Then the hot melt adhesive is cooled and solidified.

Optionally, the induction coil is placed at a fixed position, the lamp head is moved and enters the induction coil, the hot melt adhesive is heated and solidified, and then the lamp head is pulled away from the induction coil.

Optionally, the lamp head is placed at a fixed position, the induction coil is moved to surround the lamp head, the hot melt adhesive is cured after being heated, and then the induction coil is moved away from the lamp head.

Optionally, the lamp head is placed in a fixed position and does not move, the induction coil is moved to surround the lamp head, the hot melt adhesive expands and flows after being heated, and then the induction coil is moved away from the lamp head , and then the hot melt adhesive is cooled and solidified.

Optionally, the induction coil is placed in a fixed position and does not move, the lamp head is rolled and enters the induction coil, the hot melt adhesive is cured by heat or flows after being heated, and then the lamp head is pulled away from the induction coil .

Optionally, after the lamp cap and the end region of the lamp tube are bonded and fixed by the hot melt adhesive, they may pass a torque test of 1.5 to 5 Newton-meter (Nt-m).

Optionally, after the lamp cap and the end area of the lamp tube are bonded and fixed by the hot melt adhesive, they may pass a bending moment test of 5 to 10 Newton-meter (Nt-m).

Optionally, the lamp cap is provided with holes for heat dissipation.

Preferably, the holes for heat dissipation on the lamp cap are arc-shaped.

Optionally, the holes for heat dissipation on the lamp cap are three arcs of different sizes.

Optionally, the holes for heat dissipation on the lamp cap are three arcs gradually changing from small to large.

Optionally, the lamp tube further includes a diffusion film, and the light generated by the light source passes through the diffusion film and then passes out of the lamp tube.

Optionally, the diffusion film is a diffusion coating covering the inner or outer peripheral surface of the lamp tube.

Optionally, the diffusion film is a diffusion coating covering the surface of the light source.

Optionally, the thickness of the diffusion film ranges from 20 μm to 30 μm.

Optionally, the diffusion film is a diffusion film and is covered outside the light source without being in contact with the light source.

Optionally, the diffusion film has a light transmittance of more than 85%.

Optionally, the light transmittance of the diffusion film is 92% to 94%, and the thickness ranges from 200 μm to 300 μm.

Optionally, a reflective film is further provided on the inner peripheral surface of the lamp tube, and occupies part of the inner peripheral surface of the lamp tube along the circumferential direction. Preferably, the ratio between the length of the reflective film extending along the circumference of the lamp tube and the circumference of the inner peripheral surface of the lamp tube ranges from 0.3 to 0.5.

The present invention also provides an LED straight tube lamp, which comprises: a lamp tube and a lamp holder arranged at one end of the lamp tube; a power supply arranged in the lamp holder; a lamp board arranged in the lamp tube, The lamp board is provided with a light source; the light source and the power supply are electrically connected through the lamp board; the lamp board is a flexible circuit soft board.

Optionally, the flexible circuit board is a circuit layer (with conductive effect), the light source is arranged on the circuit layer, and the light source is electrically connected to the power supply through the circuit layer.

Optionally, the flexible circuit board further includes a dielectric layer stacked on the circuit layer; the dielectric layer is arranged on the side of the circuit layer opposite to the light source and fixed on the the inner peripheral surface of the lamp tube.

Optionally, the ratio between the length of the flexible circuit flexible board extending along the circumference of the lamp tube and the circumference of the inner peripheral surface of the lamp tube ranges from 0.3 to 0.5.

Optionally, the surface of the flexible circuit soft board further includes a circuit protection layer.

Optionally, the flexible circuit soft board is connected to the power supply by wire bonding.

Optionally, the flexible circuit soft board is arranged on the reflective film.

Optionally, along the circumferential direction of the lamp tube, the flexible circuit board is located on one side of the reflective film.

Optionally, the reflective film is arranged on both sides of the lamp board and extends along the circumference of the lamp tube.

Optionally, the inner or outer peripheral surface of the lamp tube may be covered with an adhesive film for isolating the outside and inside of the lamp tube after the lamp tube is broken.

Optionally, the flexible circuit flexible board crawls through the transition zone and is in electrical communication with the power supply,

Optionally, the flexible circuit soft board includes a multi-layer circuit layer and a multi-layer dielectric layer, the dielectric layer and the circuit layer are stacked alternately in sequence, and the light source is arranged on the multi-layer circuit The uppermost layer of the multi-layer circuit layer is electrically connected to the power supply through the uppermost layer of the multi-layer circuit layer.

Optionally, the two ends of the flexible circuit flexible board along the axial direction of the lamp tube are not fixed on the inner peripheral surface of the lamp tube.

Optionally, free parts are respectively formed at both ends of the flexible circuit board along the axial direction of the lamp tube, and the free parts bend and deform toward the inside of the lamp tube.

Optionally, the power supply can be a single body (that is, all power modules are integrated in one part), and it is arranged in the lamp holder at one end of the lamp tube; or the power supply can also be divided into two parts, called a double body (that is, All the power supply modules are respectively arranged in two parts), and the two parts are respectively arranged in the lamp holders at the two ends of the lamp tube.

Optionally, the lamp head includes a power socket for installing a power supply.

Optionally, one end of the power supply has a metal pin, and the lamp cap is provided with a hollow conductive pin for connecting the power supply.

Optionally, the flexible circuit board is directly welded to the power supply.

The present invention also provides an LED straight tube lamp, which comprises: a lamp tube and a lamp holder arranged at one end of the lamp tube; a power supply arranged in the lamp holder; a lamp board arranged in the lamp tube, The lamp board is provided with at least one light source; the light source and the power supply are electrically connected through the lamp board; the power supply includes a short circuit board and a power module, and the lamp board includes a long circuit The length of the long circuit board is greater than the length of the short circuit board, and the short circuit board and the long circuit board are attached to each other to form a circuit board assembly.

Preferably, the length of the short circuit board is about 15 mm to 40 mm, more preferably 19 mm to 36 mm, and the length of the long circuit board can be 800 mm to 2800 mm, more preferably 1200 mm to 2400 mm . The ratio of the short circuit board to the long circuit board may be 1:20 to 1:200.

Optionally, the short circuit board is a rigid circuit board to support the power module.

Optionally, both the power supply module and the long circuit board are located on the same side surface of the short circuit board, and the power supply module is directly electrically connected to the long circuit board.

Optionally, the power supply module and the long circuit board are respectively located on opposite sides of the short circuit board, and the power supply module passes through the short circuit board and the flexible circuit board. The circuit layer of the flexible board is electrically connected.

Optionally, the long circuit board includes a circuit layer and a dielectric layer, and the power module is electrically connected to the circuit layer through the short circuit board.

Optionally, the long circuit board includes a circuit layer and a dielectric layer, and the power module is directly electrically connected to the circuit layer.

Optionally, the power supply module is welded and fixed above the end of the short circuit board in a vertical manner.

The present invention further provides an LED light source, the light source includes a bracket with a groove, the LED grain is arranged in the groove, the bracket has a first side wall and a second side wall, the first side A wall is lower than the second side wall.

Optionally, the inner surface of the first side wall is a slope, and the slope faces the outside of the groove.

Optionally, the slope is a plane. Optionally, the slope is an arc. Preferably, the included angle between the plane and the bottom wall of the groove ranges from 105 degrees to 165 degrees. More preferably, the included angle between the plane and the bottom wall of the groove ranges from 120 degrees to 150 degrees.

The present invention further provides an LED straight tube lamp, which includes an LED light source and a lamp tube for accommodating the light source, and the light source includes a bracket with a groove and an LED crystal grain arranged in the groove The bracket of at least one light source has a first side wall arranged along the length direction of the lamp tube, and a second side wall arranged along the width direction of the lamp tube, the first side wall is lower than the second side wall.

The present invention further provides an LED straight tube lamp, which includes an LED light source and a lamp tube for accommodating the light source, and the light source includes a bracket with a groove and an LED crystal grain arranged in the groove The bracket of at least one light source has a second side wall extending along the length direction of the lamp tube, and a first side wall extending along the width direction of the lamp tube, and the first side wall is lower than the second side wall side wall.

Optionally, there are multiple light sources, and the multiple light sources are arranged in one or more rows, and each row of light sources is arranged along the length direction of the light tube.

Optionally, among the brackets of the plurality of light sources, all the second side walls on the same side along the width direction of the light tube are on the same straight line.

Optionally, for the two outermost rows of light sources along the width direction of the lamp tube, in the brackets of multiple light sources in each row, all the second side walls on the same side along the width direction of the lamp tube are on the same straight line superior.

Compared with the prior art, the technical solution of the present invention has the following advantages:

Furthermore, a heat conduction part is arranged on the lamp cap, and when the lamp cap is connected with the lamp tube, the hot melt adhesive can be solidified through heat conduction, which is convenient for bonding and high in efficiency.

Furthermore, a magnetically conductive metal sheet is arranged on the lamp cap, and when the lamp tube and the lamp cap are bonded, the adhesive is solidified by electromagnetic induction technology, which is convenient for bonding and high in efficiency.

Furthermore, the design of long and short lamp caps can increase the flexibility of product design and manufacturing.

Further, the design of the power supply slot in the lamp head can improve the efficiency and convenience of power supply installation.

Furthermore, through the design of the pins of the lamp head, the flexibility of product design and manufacturing can be increased.

Furthermore, through the design of the heat dissipation holes of the lamp holder, the problem of heat dissipation of the power supply can be solved and the aesthetic appearance of the product can be improved.

Further, one end or both ends of the lamp tube is strengthened to form an end area with an outer diameter smaller than the body area, and the outer peripheral surface of the lamp cap is flush with the outer peripheral surface of the body area, so that the packaging support can contact the lamp tube and the lamp cap at the same time, The entire LED straight tube light is evenly stressed to prevent breakage during transportation.

Further, the lamp tube has a transition area connecting the body area and the end area, and the lamp cap is bonded to the lamp tube at the transition area. Since there is a height difference between the end area of the lamp tube and the body area, the glue is prevented from overflowing onto the body area. Save the trouble of manual modification and improve the yield.

Furthermore, a diffusion film is provided inside the lamp tube, which can diffuse light when it passes through the diffusion film, and can correct the light into a uniform surface light source to achieve the effect of optical diffusion and finally make the brightness from the lamp tube evenly distributed. By setting a diffusion film on the inner wall of the lamp tube, it can reduce the grainy feeling when the user observes and improve the visual comfort; and the thickness of the diffusion film can be very small, so as to ensure the light output efficiency to the maximum extent.

Furthermore, a reflective film is provided inside the lamp tube. On the one hand, when viewing the lamp tube from the side, the user can see the light emitted by the light source from other angles due to the reflection of the reflective film; on the other hand, the light emitted by the light source The light is reflected by the reflective film, which can control the divergence angle of the lamp tube, so that the light is irradiated more toward the direction not coated with the reflective film, so that the LED straight tube lamp can obtain the same irradiation effect with lower power and improve energy saving. sex.

Furthermore, the light source is directly pasted on the inner peripheral surface of the lamp tube, so that the angle of the tube can be increased and the heat dissipation efficiency can be improved.

Further, covering the inner peripheral surface or the outer peripheral surface of the lamp tube with an adhesive film can help to isolate the outside and the inside of the lamp tube after the lamp tube breaks, thereby improving safety.

The light board adopts a flexible circuit soft board, so that the light tube cannot maintain a straight tube state after it breaks, for example, when it breaks into two pieces, so that users will not think that the light tube can still be used and install it by themselves, thereby avoiding electric shock accidents .

Furthermore, free parts are respectively formed at both ends of the flexible circuit board along the axial direction of the lamp tube, and the free parts are bent and deformed toward the inside of the lamp tube, so that the convenience of assembly and manufacture can be improved.

Furthermore, the flexible circuit soft board is directly welded to the power output end of the lamp head, so it is not easy to break during the moving process.

Furthermore, the power supply is electrically connected with the light board through a combination of long and short circuit boards, which can strengthen its structure and prevent breakage.

Furthermore, by using different forms of power modules, the flexibility of product design and manufacturing can be increased.

Further, the light source includes a bracket with a groove, the bracket has a first side wall and a second side wall surrounding the groove, the LED crystal grains are arranged in the groove, and the first side wall is along the width direction of the lamp tube Arranged, the second side wall is arranged along the length direction of the lamp tube. By setting the second side wall arranged along the length direction of the light tube in the bracket, when the user observes the light tube from the side, the LED crystal grains can be blocked by the second side wall, reducing graininess and improving visual comfort; The first side wall of the bracket is set lower than the second side wall, so that the light emitted by the LED crystal grains can pass through the first side wall and radiate out, thereby increasing the light intensity and improving the energy-saving effect.

Further, among the brackets of multiple light sources in each row, the second side walls extend along the length direction of the lamp tube and all the second side walls located on the same side along the width direction of the lamp tube are on the same straight line, which can reduce light The loss when the light tube is irradiated along the length direction, and at the same time, the second side wall is arranged to form a wall, which can better block the user's line of sight from seeing the light source.

Furthermore, by optimizing the design and use of the hot melt adhesive and the heating method of the hot melt adhesive, the combination and fixation between the lamp tube and the lamp cap can be better performed, and the hot melt adhesive between the lamp tube and the lamp cap can be avoided Reliability degradation caused by high temperature of the internal environment. In addition, the use of hot melt adhesive as an object for insulation between the lamp tube and the lamp holder can also avoid electric shock that may occur when the lamp tube is damaged.

Description of drawings

Fig. 1 is a perspective view showing an LED straight tube lamp according to an embodiment of the present invention;

FIG. 1A is a perspective view showing that the lamp caps at both ends of the lamp tube of an LED straight tube lamp according to another embodiment of the present invention have different sizes;

Fig. 2 is a three-dimensional exploded view showing the LED straight tube lamp in Fig. 1;

3 is a perspective view showing the front and top of the lamp cap of the LED straight tube lamp according to an embodiment of the present invention;

Fig. 4 is a perspective view showing the bottom of the lamp holder of the LED straight tube lamp in Fig. 3;

Fig. 5 is a planar cross-sectional view showing the connecting part of the lamp holder and the lamp tube of an LED straight tube lamp according to an embodiment of the present invention;

Fig. 6 is a three-dimensional sectional view showing an all-plastic lamp cap (with magnetically conductive metal parts and hot-melt adhesive inside) of an LED straight tube lamp according to another embodiment of the present invention;

Fig. 7 is a perspective view showing an all-plastic lamp cap (with magnetically conductive metal parts and hot-melt glue inside) and a lamp tube of an LED straight tube lamp according to another embodiment of the present invention to be heated and solidified through an induction coil;

Fig. 8 is a perspective view showing a supporting portion and a protruding portion on the inner peripheral surface of the insulating tube of the all-plastic lamp cap of the LED straight tube lamp according to another embodiment of the present invention;

Fig. 9 is a plane sectional view showing the internal structure of the all-plastic lamp holder in Fig. 8 along the X-X direction;

Fig. 10 is a plan view showing that there are holes on the surface of the magnetically conductive metal part in the all-plastic lamp cap of the LED straight tube lamp according to another embodiment of the present invention;

Fig. 11 is a plan view showing indentations or embossments on the surface of the magnetically conductive metal part in the all-plastic lamp cap of the LED straight tube lamp according to another embodiment of the present invention;

Fig. 12 is a plane sectional view showing the structure along the axial direction of the lamp tube after the insulating tube of the lamp cap of Fig. 8 is combined with the lamp tube, wherein the magnetically conductive metal part is a circular ring structure;

Fig. 13 is a plane cross-sectional view showing the structure along the axial direction of the lamp tube after the insulating tube of the lamp cap of Fig. 8 is combined with the lamp tube, wherein the magnetically conductive metal part is an elliptical ring structure;

Fig. 14 is a perspective view showing yet another lamp cap structure in an LED straight tube lamp according to another embodiment of the present invention;

Fig. 15 is a plane sectional view showing the end structure of the lamp tube in the LED straight tube lamp according to an embodiment of the present invention;

Fig. 16 is a plane sectional view showing the partial structure of the transition zone at the end of the lamp tube in Fig. 15;

Fig. 17 is a plane sectional view showing the internal structure of the lamp tube of an LED straight tube lamp in the axial direction according to an embodiment of the present invention, in which two reflective films respectively extend along the circumference of the lamp tube on both sides of the lamp board;

Fig. 18 is a plane cross-sectional view showing the internal structure of the lamp tube of the LED straight tube lamp in another embodiment of the present invention along the axial direction, wherein the reflective film extends along the circumference of the lamp tube only on one side of the lamp board;

Fig. 19 is a plane cross-sectional view showing the internal structure of the lamp tube of the LED straight tube lamp in another embodiment of the present invention along the axial direction, wherein the reflective film is located under the lamp board and extends along the circumference of the lamp board on both sides of the lamp board ;

Fig. 20 is a plane cross-sectional view showing the internal structure of the lamp tube of the LED straight tube lamp along the axial direction in another embodiment of the present invention, wherein the reflective film is located under the lamp board and along the circumferential direction of the lamp tube only on one side of the lamp board extend;

Fig. 21 is a plane cross-sectional view showing the internal structure of the lamp tube of the LED straight tube lamp in another embodiment of the present invention along the axial direction, wherein two reflective films are respectively adjacent to both sides of the lamp board and extend along the circumference of the lamp tube ;

Fig. 22 is a plane sectional view showing that the lamp board of the LED straight tube lamp according to an embodiment of the present invention is a flexible circuit flexible board and its end climbs over the transition part of the lamp tube and is welded to the output end of the power supply;

Fig. 23 is a plane sectional view showing a double-layer structure of the flexible circuit flexible board of the lamp board of the LED straight tube lamp according to an embodiment of the present invention;

Fig. 24 is a perspective view showing the soldering pads of the flexible circuit soft board of the lamp board of the LED straight tube lamp according to an embodiment of the present invention to be soldered and connected to the printed circuit board of the power supply;

Fig. 25 is a plan view showing the pad arrangement of the flexible circuit flexible board of the lamp board of the LED straight tube lamp according to an embodiment of the present invention;

Fig. 26 is a plan view showing that the flexible circuit flexible board of the light board of the LED straight tube lamp according to another embodiment of the present invention has three solder pads arranged in a row;

Fig. 27 is a plan view showing that the flexible circuit flexible board of the light board of the LED straight tube lamp according to yet another embodiment of the present invention has three solder pads arranged in two rows;

Fig. 28 is a plan view showing that the flexible circuit flexible board of the light board of the LED straight tube lamp according to another embodiment of the present invention has four pads arranged in a row;

Fig. 29 is a plan view showing that the flexible circuit flexible board of the lamp board of the LED straight tube lamp according to still another embodiment of the present invention has four pads arranged in two rows;

Fig. 30 is a plan view showing a hole in the welding pad of the flexible circuit flexible board of the lamp board of the LED straight tube lamp according to an embodiment of the present invention;

Fig. 31 is a plane sectional view showing the soldering process of the soldering pad of the flexible circuit flexible board and the printed circuit board of the power supply using the lamp board of Fig. 30;

Fig. 32 is a plane sectional view showing the soldering process of the soldering pad of the flexible circuit board of the light board and the printed circuit board of the power supply using the lamp board of Fig. 30, wherein the hole on the pad is close to the edge of the flexible circuit board;

Fig. 33 is a plan view showing that the welding pad of the flexible circuit board of the lamp board of the LED straight tube lamp according to an embodiment of the present invention has a gap;

Fig. 34 is a plane sectional view showing a partially enlarged section along line AA' in Fig. 33;

35 is a perspective view showing another embodiment of the present invention LED straight tube lamp light board flexible circuit flexible board and the printed circuit board of the power supply combined into a circuit board assembly;

Figure 36 is a perspective view showing another configuration of the circuit board assembly of Figure 35;

Fig. 37 is a perspective view showing the support structure of the light source of the LED straight tube lamp according to an embodiment of the present invention;

Fig. 38 is a perspective view showing a power supply in an LED straight tube lamp according to an embodiment of the present invention;

Fig. 39 is a perspective view showing that in an LED straight tube lamp according to another embodiment of the present invention, the circuit board of the power supply is welded vertically to the aluminum rigid circuit board;

Fig. 40 is a perspective view showing the structure of a thermal head used for welding the flexible circuit board of the light board and the printed circuit board of the power supply in an embodiment of the present invention;

Fig. 41 is a plan view showing the differences in thickness of reserved tin on the pads before welding the flexible circuit flexible board of the lamp board and the printed circuit board of the power supply in an embodiment of the present invention;

Fig. 42 is a perspective view showing a welding carrier device for welding the flexible circuit board of the light board and the printed circuit board of the power supply in an embodiment of the present invention;

Fig. 43 is a plan view showing the rotating state of the rotating platform on the welding carrier device of Fig. 41;

FIG. 44 is a plan view showing an external heating device for heating hot melt adhesive in another embodiment of the present invention;

Fig. 45 is a cross-sectional view showing a hot-melt colloid doped with uniformly distributed small particle diameter and high magnetic permeability material powder in an embodiment of the present invention;

Fig. 46 is a cross-sectional view showing that in another embodiment of the present invention, a hot-melt colloid doped with non-uniformly distributed small-diameter high-permeability material powder forms a closed circuit;

Fig. 47 is a cross-sectional view showing that in another embodiment of the present invention, a hot-melt colloid doped with non-uniformly distributed large-diameter and high-permeability material powder forms a closed circuit;

Fig. 48 is a perspective view showing that in another embodiment of the present invention, the flexible circuit soft board of the light board has double circuit layers.

detailed description

The present invention proposes a new LED straight tube lamp on the basis of a glass lamp tube to solve the problems mentioned in the background technology and the above-mentioned problems. In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. The following descriptions of various embodiments of the present invention are for illustration only, and do not represent all embodiments of the present invention or limit the present invention to specific embodiments.

Please refer to Fig. 1 and Fig. 2, the present invention provides an LED straight tube lamp in one embodiment, which includes: a lamp tube 1, a lamp board 2 arranged in the lamp tube 1, and Two lamp caps 3 at both ends. The lamp tube 1 can be a plastic lamp tube or a glass lamp tube, and the sizes of the lamp caps are the same or different. Referring to FIG. 1A , in the embodiment in which the sizes of the lamp heads are different, preferably, the size of the smaller lamp head is 30% to 80% of the size of the larger lamp head.

In one embodiment, the lamp tube 1 of the LED straight tube lamp adopts a glass lamp tube with a strengthened structure, so as to avoid the problem that the traditional glass lamp is easy to break and cause electric shock accidents due to breakage, and the problem that the plastic lamp is easy to age. In each embodiment of the present invention, chemical or physical methods can be used to perform secondary processing and strengthening on the glass lamp tube 1 .

The basic principle of using chemical methods to strengthen glass is to change the composition of the glass surface to increase the strength of the glass. The method is to use other alkali metal ions to exchange Na ions or K ions on the surface of the glass to form an ion exchange layer on the surface. When cooled to normal temperature, the glass is in a state of tension on the inner layer and compression on the outer layer, so as to achieve the purpose of increasing strength, including but not limited to high-temperature ion exchange method, low-temperature ion exchange method, dealkalization method, surface crystallization method , sodium silicate strengthening method, etc., further explained as follows.

1. High temperature ion exchange method

In the temperature range between the softening point and the transformation point of the glass, the glass containing Na ₂ O or K ₂ O is intruded into the molten salt of lithium, so that the Na ions in the glass or the Li in the molten salt with their small radius Ion phase exchange, and then cooled to room temperature, due to the difference in expansion coefficient between the surface layer containing Li ions and the inner layer containing Na ions or K ions, the surface generates residual pressure and strengthens; at the same time; the glass contains Al ₂ O ₃ , TiO ₂ and other components At the same time, through ion exchange, crystals with extremely low expansion coefficients can be produced, and a large pressure will be generated on the cooled glass surface, and glass with a strength of up to 700MPa can be obtained.

2. Low temperature ion exchange method

The low-temperature ion exchange method uses monovalent cations (such as K ions) with a larger ionic radius than the surface alkali ions (such as Na ions) to perform ion exchange with Na ions in a temperature region lower than the glass strain point, so that K ions enter the surface layer. Methods. For example, the Na ₂ O+CaO+SiO ₂ system glass can be immersed in molten salt at more than 400 degrees for more than ten hours. The low-temperature ion exchange method can easily obtain high strength, and has the characteristics of simple processing method, no damage to the transparency of the glass surface, and no deformation.

3. Dealkalization

The dealkalization method is to treat the glass with Pt catalyst in a high-temperature atmosphere containing sulfurous acid gas and moisture, so that Na+ ions seep out from the glass surface and react with sulfurous acid, so that the surface layer becomes a _SiO2 -rich layer. As a result, the surface layer becomes a low Expansive glass that develops compressive stress when cooled.

4. Surface crystallization method

The surface crystallization method is different from high-temperature ion exchange, but it is a method of strengthening microcrystals with a low expansion coefficient on the surface only by heat treatment.

5. Sodium silicate strengthening method

The sodium silicate strengthening method is to treat the aqueous solution of sodium silicate (water glass) at several atmospheric pressures above 100 degrees Celsius to obtain high-strength glass that is difficult to scratch the surface.

Methods of strengthening glass by physical means may include, but are not limited to, the use of coatings or changes in the structure of objects. The coating depends on the substrate to be sprayed to determine the type and state of the coating. It can be a tile strengthening coating, an acrylic coating or a glass coating, etc., and it can be applied in liquid or gaseous state during coating. Change the structure of the item, such as making structural reinforcement design in the vulnerable place.

Whether the above is a chemical method or a physical method, the implementation is not limited to a single method, and any of the physical methods or chemical methods can be mixed for any combination.

Please refer to FIG. 2 and FIG. 15 , the glass lamp tube of the LED straight tube lamp proposed in an embodiment of the present invention has a structurally strengthened end portion, which is described as follows. The glass lamp tube 1 includes a body area 102 and end areas 101 respectively located at two ends of the body area 102 , respectively sleeved on lamp caps outside the end areas 101 . The outer diameter of at least one end region 101 is smaller than the outer diameter of the body region 102 . In this embodiment, the outer diameters of the two end regions 101 are both smaller than the outer diameter of the body region 102 , and the section of the end regions 101 is a plane parallel to the body region 102 . Specifically, both ends of the lamp tube 1 are strengthened, and the end region 101 forms a strengthened structure, the lamp cap 3 is set on the strengthened end region 101, and the difference between the outer diameter of the lamp cap 3 and the outer diameter of the lamp body region 102 becomes Small, even completely flat, that is, the outer diameter of the lamp cap 3 is equal to the outer diameter of the body area 102 so that there will be no gap between the lamp cap 3 and the body area 102 . The advantage of this setting is that during transportation, the packaging support will not only contact the lamp cap 3, but it can contact the lamp cap 3 and the lamp tube 1 at the same time, so that the entire LED straight tube lamp is evenly stressed without causing the lamp cap 3 It becomes the only point of force, avoiding the rupture of the part where the lamp holder 3 and the lamp tube end area 101 are connected due to stress concentration, improving the quality of the product, and having an aesthetic effect.

In one embodiment, the outer diameter of the lamp cap 3 is substantially equal to the outer diameter of the body area 102, and the tolerance is within plus or minus 0.2 mm (millimeters), and the maximum is not more than plus or minus 1 mm. In order to achieve the purpose that the outer diameter of the lamp cap 3 is substantially equal to the outer diameter of the body area 102, according to different thicknesses of the lamp cap 3, the difference between the outer diameters of the strengthened end area 101 and the body area 102 can be in the range of 1 mm to 10 mm; or preferably Therefore, the range of the difference between the outer diameters of the strengthened end region 101 and the body region 102 can be widened to 2 mm to 7 mm.

Referring to FIG. 15 , there is a smooth transition between the end region 101 and the body region 102 of the lamp tube 1 , forming a transition region 103 . In one embodiment, both ends of the transition region 103 are arc-shaped, that is, the cross-sections of the two ends of the transition region 103 along the axial direction are arc-shaped. Further, one of the arc surfaces at both ends of the transition region 103 is connected to the body region 102 , and the other is connected to the end region 101 . The arc angle of the arc surface is greater than 90 degrees, and the outer surface of the end region 101 is a continuous surface and remains parallel to the outer surface of the body region 102 viewed from a cross section. In other embodiments, the shape of the transition zone 103 may not be curved or be arc-shaped. The length of the transition zone 103 is 1mm to 4mm. If it is less than 1mm, the strength of the transition zone is not enough; if it is greater than 4mm, the length of the body zone 102 will be reduced and the light emitting surface will be reduced. At the same time, the length of the lamp cap 3 needs to be increased correspondingly to match the The body area 102 cooperates to increase the material of the lamp cap 3 . In other embodiments, the transition region 103 may not be arc-shaped.

Referring to Fig. 5 and Fig. 16, in this embodiment, the lamp tube 1 is a glass lamp tube, and the transition zone 103 between the body zone 102 and the end zone 101 will be slightly formed by two consecutive curves with a radius of curvature R1, In the inverted S-shaped curved surface formed by the curved surface of R2, the curved surface of the transition zone 103 close to the body zone 102 is convex outward, while the curved surface of the transition zone 103 close to the end zone 101 is concave inward. Generally speaking, the relationship between the radii of curvature R1 and R2 of the two arc surfaces is R1<R2, the ratio R1:R2 of R1 and R2 is 1:1.5 to 1:10, and the preferred range is 1:2.5 to 1 :5, the best range is 1:3 to 1:4, the present embodiment adopts R1:R2 is about 1:3, so that the transition zone 103 close to the end zone 101, after strengthening treatment, makes the glass in The inner layer is under tension and the outer layer is under compression; while the transition zone 103 close to the main body area 102, after strengthening treatment, the glass is in the state of inner layer under compression and outer layer under tension; The purpose of the strength of the transition zone 103 .

Taking the T8 standard lamp tube as an example, the outer diameter of the strengthened terminal area 101 ranges from 20.9 mm to 23 mm. If it is less than 20.9 mm, the inner diameter of the terminal area 101 is too small, so that the power supply components cannot be inserted into the lamp tube 1 . The outer diameter of the main body area 102 ranges from 25mm to 28mm. If it is less than 25mm, it is inconvenient to perform strengthening treatment on both ends under the existing process conditions. If it is greater than 28mm, it will not meet the industry standard.

Please refer to FIG. 3 and FIG. 4. In one embodiment of the present invention, the lamp cap 3 of the LED straight tube lamp includes an insulating tube 302, a heat conducting part 303 fixed on the outer peripheral surface of the insulating tube 302, and a heat conducting part 303 arranged on the insulating tube 302 Two hollow conductive needles 301. The heat conducting part 303 may be a tubular metal ring.

Please refer to FIG. 5 , in one embodiment, one end of the heat conducting part 303 protrudes from the end of the insulating tube 302 facing the lamp tube, and a thermal Melt glue 6 bonding. Furthermore, the lamp cap 3 extends to the transition area 103 through the heat conduction part 303, and the heat conduction part 303 is in close contact with the transition area 103, so that when the heat conduction part 303 and the lamp tube 1 are bonded by the hot melt adhesive 6, there will be no hot melt The glue 6 overflows the lamp cap 3 and remains in the main body area 102 of the lamp tube 1 . In addition, the end of the insulating tube 302 facing the lamp tube 1 does not extend to the transition area 103 , that is, there is a certain distance between the end of the insulating tube 302 facing the lamp tube and the transition area 103 . In this embodiment, the material of the insulating tube 302 is not limited to use plastic, ceramics and other materials, and it only needs to be a good conductor of electricity under normal conditions.

Furthermore, the hot-melt adhesive 6 is a composition, which includes a material that is solder paste powder, preferably including: phenolic resin 2127#, shellac, rosin, calcite powder, zinc oxide, ethanol, and the like. In this embodiment, rosin is a kind of thickening agent, which is soluble in ethanol but insoluble in water. This kind of hot melt adhesive 6 can change its physical state to expand greatly under the condition of high temperature heating, and achieve the effect of curing. In addition, the viscosity of its own material can make the lamp holder 3 and the lamp tube 1 closely contact, which is convenient for LED direct contact. Automatic production of tube lamps. In one embodiment, the hot-melt adhesive 6 will expand and flow after being heated at a high temperature, and then cool to achieve the solidification effect. When the hot-melt adhesive 6 is heated from room temperature to a temperature of 200 to 250 degrees Celsius, the hot-melt adhesive The volume will expand to 1 to 1.3 times its original size. Of course, the selection of hot melt adhesive components in the present invention is not limited thereto, and components that are cured after being heated to a predetermined temperature at high temperature can also be selected. Since the hot melt adhesive 6 of the present invention will not cause a decrease in reliability due to the high-temperature environment formed by heating components such as power modules, it can prevent the bonding performance between the lamp tube 1 and the lamp holder 3 during the use of the LED straight tube lamp from being reduced, and improve the long-term reliability.

Further, an accommodating space is formed between the inner peripheral surface of the protruding part of the heat conducting part 303 and the outer peripheral surface of the lamp tube 1, and the hot melt adhesive 6 is filled in the accommodating space, as shown by the dotted line B in FIG. 5 . In other words, the position where the hot melt adhesive 6 is filled passes through a first virtual plane perpendicular to the axial direction of the lamp tube 1 (such as the plane drawn by the dotted line B in Figure 5 ): along the radially inward direction, in the first virtual plane The positions of the planes are sequentially arranged as the heat conducting part 303 , the hot melt adhesive 6 and the outer peripheral surface of the lamp tube 1 . The coating thickness of the hot melt adhesive 6 can be 0.2 mm to 0.5 mm. The hot melt adhesive 6 will expand and then solidify, thereby contacting the lamp tube 1 and fixing the lamp cap 3 to the lamp tube 1 . And because there is a height difference between the outer peripheral surfaces of the end area 101 and the body area 102, it is possible to prevent the hot melt glue from overflowing onto the body area 102 of the lamp tube, thereby eliminating the subsequent manual wiping process and improving the quality of the LED straight tube lamp. output. During processing, the heat is conducted to the heat conduction part 303 through an external heating device, and then to the hot melt adhesive 6 to make the hot melt adhesive 6 expand and then cool and solidify, so that the lamp cap 3 is fixedly bonded to the lamp tube 1 .

Please refer to Fig. 5, in one embodiment, the insulating tube 302 includes a first tube 302a and a second tube 302b connected axially, the outer diameter of the second tube 302b is smaller than the outer diameter of the first tube 302a, and the outer diameter of the two tubes The outer diameter difference ranges from 0.15mm to 0.3mm. The heat conduction part 303 is arranged on the outer peripheral surface of the second tube 302b, and the outer surface of the heat conduction part 303 is flush with the outer peripheral surface of the first tube 302a, so that the outer surface of the lamp cap 3 is smooth and smooth, ensuring that the entire LED straight tube lamp is packaged and transported The process is evenly stressed. Wherein, the ratio of the length of the heat conducting part 303 along the axial direction of the lamp cap to the axial length of the insulating tube 302 is 1:2.5 to 1:5, that is, the length of the heat conducting part: the length of the insulating tube is 1:2.5 to 1:5.

In one embodiment, in order to ensure the firmness of the bonding, the second tube 302b is at least partially sleeved outside the lamp tube 1, and the accommodating space also includes the space between the inner surface of the second tube 302b and the outer surface of the end area 101 of the lamp tube. space between. The hot melt adhesive 6 is partially filled between the second tube 302b and the lamp tube 1 that overlap each other (the position shown by the dotted line A in FIG. 101 between the outer surfaces. In other words, the position where the hot melt adhesive 6 is filled in the accommodating space passes through a second imaginary plane perpendicular to the axial direction of the lamp tube (the plane drawn by the dotted line A in Figure 5 ): radially inward Direction, at the position of the second virtual plane, the heat conduction part 303 , the second tube 302 b , the hot melt adhesive 6 and the terminal area 101 are arranged in sequence.

In this embodiment, the hot melt adhesive 6 does not need to completely fill the accommodating space (as shown in the accommodating space may also include the space between the heat conducting part 303 and the second tube 302b). During manufacture, when the hot melt adhesive 6 is applied between the heat conduction part 303 and the terminal area 101, the amount of the hot melt adhesive can be appropriately increased, so that in the subsequent heating process, the hot melt adhesive can flow to the second due to expansion. Between the tube 302b and the end area 101, after cooling and solidification, the two are bonded together.

When making an LED straight tube lamp, the end area 101 of the lamp tube 1 is inserted behind the lamp cap 3, and the axial length of the part where the end area 101 of the lamp tube 1 is inserted into the lamp cap 3 accounts for one-third to 1/3 of the axial length of the heat conducting part 303. Between two-thirds, the advantage of this is: on the one hand, it ensures that the hollow conductive needle 301 and the heat conduction part 303 have a sufficient creepage distance, and the two are not easy to short circuit when energized, causing people to get an electric shock and causing danger; on the other hand, due to The insulating effect of the insulating tube 302 increases the creepage distance between the hollow conductive needle 301 and the heat conducting part 303 , making it easier to pass a dangerous test that would cause an electric shock at a high voltage.

Further, for the hot melt adhesive 6 on the inner surface of the second tube 302b, the second tube 302b is separated between the hot melt adhesive 6 and the heat conduction part 303, so the effect of heat conduction from the heat conduction part 303 to the hot melt adhesive 6 will be reduced. discount. In order to solve this problem, referring to FIG. 4 , in this embodiment, a plurality of notches 302c arranged in the circumferential direction are arranged at the end of the second tube 302b facing the lamp tube 1 (that is, the end away from the first tube 302a), so as to increase the contact between the heat conducting part 303 and the heat sink. The contact area of the melt adhesive 6 facilitates the rapid conduction of heat from the heat conduction portion 303 to the hot melt adhesive 6 and accelerates the curing process of the hot melt adhesive 6 . At the same time, when the user touches the heat conducting part 303 , due to the insulating effect of the hot melt glue 6 between the heat conducting part 303 and the lamp tube 1 , no electric shock will be caused due to the damage of the lamp tube 1 .

The heat conduction part 303 can be made of various materials that are easy to conduct heat, and in this embodiment, it is a metal sheet, which also has aesthetic considerations, such as aluminum alloy. The heat conducting part 303 is in the shape of a tube (or ring), and is sheathed outside the second tube 302b. The insulating tube 302 can be made of various insulating materials, but it is better not to conduct heat easily, so as to avoid heat conduction to the power module inside the lamp cap 3 and affect the performance of the power module. The insulating tube 302 in this embodiment is a plastic tube. In other embodiments, the heat conduction portion 303 may also be composed of a plurality of metal sheets arranged at intervals or not at intervals along the circumferential direction of the second tube 302b.

The lamp base of the LED straight tube lamp of the present invention can also be designed to have other structures or contain other components. Please refer to FIG. 6 , in another embodiment of the present invention, the lamp cap 3 includes a magnetically conductive metal part 9 in addition to the insulating tube 302 , but does not include the aforementioned heat conducting portion. The magnetically permeable metal part 9 is fixed on the inner surface of the insulating tube 302 , and is at least partially located between the inner surface of the insulating tube 302 and the end area of the lamp tube, and overlaps with the lamp tube 1 in the radial direction. In this embodiment, the entire magnetic conductive metal part 9 is located in the insulating tube 302, and the hot melt adhesive 6 is coated on the inner surface of the magnetic conductive metal part 9 (the surface of the magnetic conductive metal part 9 facing the lamp tube 1), and is combined with The outer peripheral surface of the lamp tube 1 is bonded. Wherein, in order to increase the bonding area and improve bonding stability, the hot melt adhesive 6 preferably covers the entire inner surface of the magnetically conductive metal part 9 .

Please refer to Fig. 7, when the LED straight tube lamp of this embodiment is manufactured, the insulating tube 302 of the lamp cap 3 is inserted into an external heating device, and this external heating device is preferably an induction coil 11, so that the induction coil 11 is located above the magnetically permeable metal part 9 and opposite to the magnetically permeable metal part 9 along the radial direction of the insulating tube 302 . During processing, the induction coil 11 is energized, and an electromagnetic field is formed after the induction coil 11 is energized, and the electromagnetic field is converted into an electric current after passing through the magnetically conductive metal part 9, so that the magnetically conductive metal part 9 heats up, that is, the electromagnetic induction technology is used to make the magnetically conductive metal part 9 generate heat, And the heat is conducted to the hot-melt adhesive 6 , the hot-melt adhesive 6 expands and flows after absorbing the heat, and the hot-melt adhesive 6 solidifies after cooling, so as to realize the purpose of fixing the lamp cap 3 to the lamp tube 1 . The main material of the induction coil 11 can be red copper and a ring coil coiled by a metal wire with a width of 5 mm to 6 mm. The diameter of the ring coil is about 30 mm to 35 mm. Under the premise that the outer diameter of the lamp cap 3 is the same as that of the lamp tube 1, the outer diameter of the lamp cap 3 will have different outer diameters with different lamp tubes 1, so different types of lamp tubes can use sensors with different diameters. Coil 11. For example, the diameter of T12 lamp is 38.1mm, the diameter of T10 lamp is 31.8mm, the diameter of T8 lamp is 25.4mm, the diameter of T5 lamp is 16mm, the diameter of T4 lamp is 12.7mm, the diameter of T2 lamp is The diameter is 6.4mm.

Furthermore, the induction coil 11 can also be used in conjunction with a power amplification unit, so as to amplify the power of the AC power supply by 1 to 2 times. The induction coil 11 is preferably coaxial with the insulating tube 302, so that the energy transmission is relatively uniform. Preferably, the deviation between the induction coil 11 and the central axis of the insulating tube 302 does not exceed 0.05 mm. After the bonding is completed, the lamp cap 3 together with the lamp tube 1 will be pulled away from the induction coil 11 . Subsequently, the hot melt adhesive 6 will expand and flow after absorbing heat, and then cool to achieve the effect of solidification. In one embodiment, the heating temperature of the magnetically conductive metal part 9 can reach 250-300 degrees Celsius, and the heating temperature of the hot melt adhesive 6 can reach 200-250 degrees Celsius. Of course, the selection of hot melt adhesive components in the present invention is not limited thereto, and components that solidify immediately after absorbing heat can also be selected.

In one embodiment, after the above-mentioned manufacturing process of the lamp tube 1 is completed, the induction coil 11 is not moved, and then the lamp tube 1 and the lamp cap 3 are pulled away from the induction coil 11 . However, in other embodiments, the lamp tube 1 can also be fixed, and then the induction coil 11 is separated from the lamp tube to complete. In one embodiment, the heating equipment of the magnetically conductive metal part 9 can adopt a device with a plurality of induction coils 11, that is to say, when it is desired to heat the lamp caps 3 of the plurality of lamp tubes 1, only the plurality of lamp tubes 1 need to be heated. Put it in the default position, and then, the heating device will move the corresponding induction coil 11 to the position of the lamp head of the lamp 1 to be heated for heating. After the heating is completed, the plurality of induction coils 11 will be pulled away from the corresponding lamp 1 to complete Heating of the magnetically permeable metal part 9. However, since the length of the lamp tube 1 is much longer than the length of the lamp cap 3, or even in some special applications, the length of the lamp tube 1 can reach more than 240 cm. 3 are drawn in or out relative to each other in the front-rear direction as described above, the connection and fixation between the lamp cap 3 and the lamp tube 1 may be damaged due to positional errors.

Please continue to refer to Fig. 44, the induction coil 11 described in this embodiment can also adopt an external heating device 110 formed by a plurality of upper and lower two semicircular clamps 11a to achieve the same effect as the aforementioned induction coil, and at the same time The possibility of damage to the connection and fixation of the lamp holder 3 and the lamp tube 1 due to the position error caused by the aforementioned relative movement in the front and rear directions is reduced. The upper and lower semicircular clamps 11a respectively have semicircular coils curled by the above-mentioned metal wires with a width of 5mm to 6mm. When the upper and lower semicircular clamps are in contact, a hollow ring with a diameter of about 30mm to 35mm will be formed. , and a closed circuit is formed inside to form the aforementioned induction coil 11 . In this embodiment, the upper and lower semicircular clamps 11a are used to form a hollow ring, and the lamp cap 3 of the lamp tube 1 does not enter the hollow ring by moving back and forth, but enters the lower semicircular clamp by rolling. In the notch, the problem of damage caused by poor control of position accuracy can be avoided when the induction coil 11 and the lamp cap 3 are pulled in or out from each other. In detail, the lamp tube 1 is on a rolling production line, and the lamp cap 3 of the lamp tube 1 is rolled and placed on the gap of the lower semicircular fixture, and then the upper semicircular fixture and the lower semicircular fixture contact to form a closed circuit After the heating is completed, the upper semicircular fixture is separated, which can reduce the requirements for position accuracy control and reduce the yield problem in manufacturing.

Please refer to Fig. 6, in order to better support the magnetically conductive metal part 9, the inner diameter of the first tube part 302d supporting the magnetically conductive metal part 9 on the inner peripheral surface of the insulating tube 302 is greater than the inner diameter of the remaining second tube part 302e, A step is formed at the intersection of 302d and 302e, and one axial end of the magnetically conductive metal part 9 leans against the step, and after the magnetically conductive metal part 9 is installed, the inner surface of the entire lamp cap is flush. In addition, the magnetically permeable metal piece 9 can be in various shapes, such as circumferentially arranged sheets or tubes.

Please refer to Fig. 8 and Fig. 9, in other embodiments, the position where the inner peripheral surface of the insulating tube 302 is used to support the magnetically conductive metal piece 9 can also be in the following form: the inner peripheral surface of the insulating tube 302 has a The inner protruding support part 313 makes the magnetic permeable metal part 9 bear against the upper edge of the support part 313 in the axial direction (ie, the end surface of the support part facing the protruding part). Preferably, the thickness of the supporting portion 313 protruding inwardly from the inner peripheral surface of the insulating tube 302 is 1 mm to 2 mm. Moreover, a protruding portion 310 is also provided on the inner peripheral surface of the insulating tube 302, so that the magnetically permeable metal piece 9 abuts against the radially inner side of the protruding portion 310 in the circumferential direction, and the outer peripheral surface of the magnetically permeable metal piece 9 and the insulation A gap is formed between inner peripheral surfaces of the tubes 302 . The radial thickness of the protruding portion 310 is smaller than the radial thickness of the supporting portion 313 , and in one embodiment, it is preferably 0.2 mm to 1 mm.

As shown in Figure 9, the protruding part 310 is connected to the supporting part 313 in the axial direction, and the magnetically permeable metal part 9 abuts against the upper edge of the supporting part 313 in the axial direction (that is, the end face of the supporting part facing the protruding part) , against the radial inner side of the protruding portion 310 in the circumferential direction, so that at least a part of the protruding portion 310 is located between the magnetically permeable metal piece 9 and the inner peripheral surface of the insulating tube 302 . The protruding part 310 can be a ring extending along the circumferential direction of the insulating tube 302, or a plurality of protrusions arranged at intervals around the inner peripheral surface of the insulating tube 302 in the circumferential direction. In addition, the arrangement of the protrusions can be equidistant in the circumferential direction. Arranged at intervals or at unequal intervals, as long as the contact area between the outer surface of the magnetic permeable metal piece 9 and the inner peripheral surface of the insulating tube 302 can be reduced, but it can also have the function of holding the hot melt adhesive 6 . In other embodiments, the lamp cap 3 can also be made of all metal. In this case, an insulator needs to be added at the bottom of the hollow conductive needle to withstand high voltage.

Please refer to FIG. 10 , in other embodiments, the surface of the magnetically permeable metal part 9 facing the insulating tube 302 has at least one hole 91, and the shape of the hole 91 is circular, but not limited to circular, and can be, for example, oval or square. , star shape, etc., as long as the contact area between the magnetically conductive metal piece 9 and the inner peripheral surface of the insulating tube 302 can be reduced, but it can also have the function of thermosetting, that is, heating the hot melt adhesive 6 . Preferably, the area of the hole 91 accounts for 10% to 50% of the area of the magnetically permeable metal piece 9 . The holes 91 may be arranged at equal or unequal intervals in the circumferential direction.

Please refer to FIG. 11 , in other embodiments, the surface of the magnetically permeable metal part 9 facing the insulating tube 302 has an indentation/relief 93, and the indentation/relief 93 can be outward from the inner surface of the magnetically permeable metal part 9 The embossment of the raised surface, but also can be the indentation from the outer surface of the magnetic conductive metal part 9 to the inner surface. The purpose of reducing the contact area between the outer surface of the magnetically permeable metal piece 9 and the inner peripheral surface of the insulating tube 302 . That is to say, the surface shape of the magnetically conductive metal piece 9 can be selected from a structural shape in the group consisting of holes, embossments, indentations and combinations thereof, so as to reduce the appearance of the magnetically conductive metal piece 9. The purpose of the contact area between the surface and the inner peripheral surface of the insulating tube 302. However, it should be noted that at the same time, it should be ensured that the magnetically conductive metal part 9 and the lamp tube are stably bonded to realize the function of the heat-curable hot melt adhesive 6 .

Please refer to FIG. 12 , in one embodiment, the magnetically conductive metal part 9 is a circular ring. Please refer to FIG. 13. In other embodiments, the magnetically conductive metal part 9 is a non-circular ring, such as but not limited to an oval ring. When the lamp tube 1 and the lamp cap 3 are oval, the short axis of the oval ring It is larger than the outer diameter of the end area of the lamp tube to reduce the contact area between the outer surface of the magnetic conductive metal part 9 and the inner peripheral surface of the insulating tube 302 , but also realize the function of thermosetting hot melt adhesive 6 . In other words, there is a support portion 313 on the inner peripheral surface of the insulating tube 302, and the magnetically conductive metal piece 9 of the non-circular ring is arranged on the supporting portion 313. Therefore, the inner peripheral surface of the magnetically conductive metal piece 9 and the insulating tube 302 can The contact area is reduced, and the function of curing the hot melt adhesive 6 can be realized. It should be noted that, in other embodiments, the magnetically conductive metal part 9 can also be arranged outside the lamp cap 3 instead of the heat conducting part 303 as shown in FIG. 6 functions.

Please refer to FIGS. 45 to 47. In other embodiments, it is not necessary to additionally provide a magnetically conductive metal part 9 on the lamp cap 3, and only a predetermined proportion of high magnetically conductive material powder 65 needs to be directly mixed into the aforementioned hot melt adhesive 6. Its relative permeability is between 10 ² and 10 ⁶ . The high magnetic permeability material powder 65 can be used to replace the original calcite powder in the hot melt adhesive 6 , that is to say, the volume ratio of the high magnetic permeability material powder 65 to the calcite powder is about 1:1˜1:3. Preferably, the material of the high magnetic permeability material powder 65 is selected from a mixture group consisting of iron, nickel, cobalt and their alloys, and the high magnetic permeability material powder 65 accounts for 10% to 10% by weight of the hot melt adhesive 6. 50%, the average particle diameter of the high magnetic permeability material powder 65 is 1 micron to 30 microns. In this way, the hot melt adhesive 6 with the high magnetic permeability material powder 65 makes the lamp cap 3 and the lamp tube 1 bonded by the hot melt adhesive 6, and can pass the destructive test of the lamp cap, and can meet the bending moment test standard of the lamp cap and the lamp cap at the same time. Torque test standard. Generally speaking, the bending moment test standard of the straight tube lamp needs to be greater than 5 Newton-meter (Nt-m), and the test standard of the lamp cap torque of the straight tube lamp needs to be greater than 1.5 Newton-meter (Nt-m). Depending on the ratio of high magnetic permeability material powder 65 doped to the hot melt adhesive 6 and the different magnetic fluxes applied to the lamp head, the bending moment test of 5 to 10 Newton-meter (Nt-m) and the bending moment test of 1.5 to 5 Newton-meter ( Nt-m) torque test. During processing, the aforementioned induction coil 11 is energized, and after the induction coil 11 is energized, the high magnetic permeability material powder 65 evenly distributed in the hot melt adhesive 6 is charged, and then the hot melt adhesive 6 is heated, and the hot melt adhesive 6 absorbs heat. It expands and flows, solidifies after being cooled, so as to achieve the purpose of fixing the lamp cap 3 to the lamp tube 1 .

As shown in FIG. 45 to FIG. 47 , they are distribution states of different high magnetic permeability material powders 65 in the hot melt adhesive 6 . As shown in Figure 45, the high magnetic permeability material powder 65 has an average particle diameter between 1 micron and 5 microns, and is evenly distributed in the hot melt adhesive 6. When the hot melt adhesive 6 is coated on the inner surface of the lamp cap 3, the high conductivity Although the uniform distribution of the magnetic material powder 65 in the hot melt adhesive 6 cannot form a closed circuit, within the range of an electromagnetic field, a single particle of the high magnetic permeability material powder 65 will still generate heat due to the hysteresis effect, thereby heating the hot melt adhesive 6. As shown in Figure 46, the average particle size of the high magnetic permeability material powder 65 is between 1 micron and 5 microns, and it is unevenly distributed in the hot melt adhesive 6. When the hot melt adhesive 6 is coated on the inner surface of the lamp cap 3, the high The particles of the magnetically permeable material powder 65 are connected to each other to form a closed circuit. Within the range of an electromagnetic field, a single particle of the highly magnetically permeable material powder 65 will generate heat due to the hysteresis effect, and will also generate heat due to the charge flow of the closed circuit. As shown in Figure 47, the high magnetic permeability material powder 65 has an average particle size between 5 microns and 30 microns, and is unevenly distributed in the hot melt adhesive 6. When the hot melt adhesive 6 is coated on the inner surface of the lamp cap 3, the high The particles of the magnetically permeable material powder 65 are connected to each other to form a closed circuit. Within the range of an electromagnetic field, a single particle of the highly magnetically permeable material powder 65 will generate heat due to the hysteresis effect, and will also generate heat due to the charge flow of the closed circuit. Therefore, the heating temperature of the hot melt adhesive 6 can be controlled differently by adjusting the particle size, distribution density, and distribution shape of the high magnetic permeability material powder 65 , as well as the magnetic flux applied to the lamp cap 3 . In one embodiment, when the hot melt adhesive 6 is heated to a temperature of 200 to 250 degrees Celsius, it may have fluidity and solidify after cooling. In another embodiment, the hot melt adhesive 6 is cured immediately after being heated to a temperature of 200-250 degrees Celsius.

Please refer to Fig. 14 and Fig. 39, in another embodiment, a protruding column 312 is provided at the end of the lamp holder 3', and a hole is opened at the top of the protruding post 312, and a concave hole with a depth of 0.1±1% mm is provided on the outer edge thereof. The slot 314 can be used for positioning the conductive pin 53 . After the conductive pin 53 passes through the hole of the boss 312 at the end of the lamp cap 3', it can be bent and placed on the groove 314, and then a conductive metal cap 311 is used to cover the boss 312, so that the conductive The pin 53 is fixed between the boss 312 and the conductive metal cap 311. In this embodiment, the inner diameter of the conductive metal cap 311 is, for example, 7.56±5%mm, and the outer diameter of the boss 312 is, for example, 7.23±5%mm , and the outer diameter of the conductive pin 53 is, for example, 0.5±1% mm, so the conductive metal cap 311 can directly cover the boss 312 tightly without additional coating of glue, so that the power supply 5 and the conductive metal cap 311 can be completed electrical connections.

Please refer to FIGS. 2 , 3 , 12 , and 13 . In other embodiments, the lamp cap provided by the present invention is provided with a hole 304 for heat dissipation. In this way, the heat generated by the power module inside the lamp head can be dissipated without causing the inside of the lamp head to be in a high temperature state, so as to avoid the reliability of the internal components of the lamp head from decreasing. Further, the holes on the lamp cap for heat dissipation are arc-shaped. Furthermore, the holes for heat dissipation on the lamp cap are three arcs of different sizes. Further, the holes for heat dissipation on the lamp cap are three arcs gradually changing from small to large. Further, the holes on the lamp cap for heat dissipation can be formed by any combination of the above arcs and arcs.

In other embodiments, the lamp base includes a power slot (not shown) for installing a power module.

Referring to Fig. 17, in addition to the lamp board 2 (or flexible circuit soft board) which is closely attached to the lamp tube 1, the lamp tube 1 of this embodiment also includes a diffusion film 13, and the light generated by the light source 202 passes through the diffusion film 13 Pass through the lamp tube 1. The diffusion film 13 plays a role in diffusing the light emitted by the light source 202. Therefore, as long as the light can pass through the diffusion film 13 and then pass out of the lamp tube 1, the arrangement of the diffusion film 13 can have various forms, for example: the diffusion film 13 Can be coated or covered on the inner peripheral surface of the lamp tube 1, or coated on the diffusion coating (not shown in the figure) on the surface of the light source 202, or cover (or cover) outside the light source 202 as an outer cover Diffusion membrane.

Please refer to FIG. 17 again, when the diffusion film 13 is a diffusion film, it can be covered outside the light source 202 and not in contact with the light source 202 . The general term for a diffusion film is an optical diffusion sheet or an optical diffusion plate, usually made of PS polystyrene, PMMA polymethyl methacrylate, PET (polyethylene terephthalate), PC (polycarbonate) A combination of one or several types of diffusion particles forms a composite material that can diffuse when light passes through the composite material, and can correct the light into a uniform surface light source to achieve the effect of optical diffusion. The brightness of the lamp tube is evenly distributed.

When the diffusion film 13 is a diffusion coating, its main component can be any one of calcium carbonate, calcium halophosphate and aluminum oxide, or a combination of any two or three of them. When calcium carbonate is used as the main material to form a diffusion coating with an appropriate solution, it will have excellent diffusion and light transmission (there is a chance to reach more than 90%). In addition, it is also found that the lamp holder combined with the tempered glass sometimes has quality problems, and some proportions are easy to fall off, and as long as the diffusion coating is also applied to the outer surface of the end region 101 of the lamp tube, the diffusion coating and heat The friction between the melt adhesive 6 will increase the friction between the lamp holder and the lamp tube, so that the friction between the diffusion coating and the hot melt adhesive 6 is greater than that between the end surface of the end zone 101 of the lamp tube and the hot melt adhesive when the diffusion coating is not applied. frictional force, so the lamp cap 3 passes through the friction between the diffusion coating and the hot melt adhesive 6, and the problem of the lamp cap 3 falling off can be largely solved.

In this embodiment, when preparing, the composition of the diffusion coating includes calcium carbonate, strontium phosphate (such as CMS-5000, white powder), thickener, and ceramic activated carbon (such as ceramic activated carbon SW-C, colorless liquid ). Specifically, when the diffusion coating is mainly made of calcium carbonate, combined with thickener, ceramic activated carbon and deionized water, mixed and coated on the inner peripheral surface of the glass lamp tube, the average thickness of the coating falls between 20 and Between 30μm. The diffusion film 13 formed of this material can have a light transmittance of about 90%, and generally speaking, the light transmittance ranges from about 85% to 96%. In addition, this diffusion film 13 can also play the role of electrical isolation in addition to the effect of diffusing light, so that when the glass lamp tube breaks, the risk of electric shock for users is reduced; at the same time, this diffusion film 13 can make When the light source 202 emits light, it diffuses the light and emits it in all directions, so that it can illuminate the rear of the light source 202, that is, the side close to the flexible circuit board, so as to avoid forming a dark area in the lamp tube 1 and improve the space efficiency. Lighting comfort. In addition, when choosing a diffusion coating with different material components, there is another possible implementation. The thickness of the diffusion film can range from 200 μm to 300 μm, and the light transmittance can be controlled between 92% and 94%. Another effect.

In other embodiments, the diffusion coating can also be made of calcium carbonate as the main material, with a small amount of reflective material (such as strontium phosphate or barium sulfate), thickener, ceramic activated carbon and deionized water, mixed and coated on the glass lamp On the inner peripheral surface of the tube, the average thickness of the coating fell between 20 and 30 μm. Since the purpose of the diffusion film is to diffuse the light, the diffusion phenomenon is the reflection of the light by the particles in the microcosm. The particle size of reflective materials such as strontium phosphate or barium sulfate will be much larger than that of calcium carbonate. Therefore, choosing to add a small amount of reflective material to the diffusion coating can effectively increase the diffusion effect of light.

Of course, in other embodiments, calcium halophosphate or aluminum oxide can also be selected as the main material of the diffusion coating. The particle diameter of calcium carbonate particles falls between 2 and 4 μm, while the particle size of calcium halophosphate and aluminum oxide The particle size falls between 4 and 6 μm and between 1 and 2 μm respectively. Taking calcium carbonate as an example, when the required range of light transmittance falls between 85% and 92%, the overall diffusion coating with calcium carbonate as the main material The average thickness of the layer to be coated is about 20 to 30 μm. Under the same light transmittance requirement range (85% to 92%), the average thickness of the diffusion coating with calcium halophosphate as the main material will fall within 25 To 35 μm, the average thickness of the diffusion coating with alumina as the main material will fall in the range of 10 to 15 μm. If the light transmittance needs to be higher, such as above 92%, the thickness of the diffusion coating mainly made of calcium carbonate, calcium halophosphate or alumina needs to be thinner.

That is to say, according to the application occasion of the lamp tube 1 , different light transmittance requirements can be selected, and the main material of the diffusion coating to be coated, the corresponding forming thickness, and the like can be selected. It should be added that the higher the light transmittance of the diffusion film, the more grainy the user will see the light source.

Continuing to refer to FIG. 17 , further, a reflective film 12 is provided on the inner peripheral surface of the lamp tube 1 , and the reflective film 12 is arranged around the lamp panel 2 with the light source 202 and occupies part of the inner peripheral surface of the lamp tube 1 along the circumferential direction. . As shown in FIG. 17 , the reflective film 12 extends along the circumferential direction of the lamp tube on both sides of the lamp board 2 , and the lamp board 2 is basically located in the middle of the reflective film 12 along the circumferential direction. The setting of the reflective film 12 has two effects. On the one hand, when looking at the lamp tube 1 from the side (X direction in the figure), the light source 202 will not be seen directly due to the blocking of the reflective film 12, thereby reducing the effect caused by graininess. Visual discomfort; on the other hand, the light emitted by the light source 202 is reflected by the reflective film 12, which can control the divergence angle of the lamp tube, so that the light is more irradiated towards the direction that is not coated with the reflective film, so that the LED straight tube lamp Obtain the same irradiation effect with lower power and improve energy saving.

Specifically, the reflective film 12 is attached to the inner peripheral surface of the lamp tube 1, and an opening 12a corresponding to the lamp board 2 is provided on the reflective film 12. The size of the opening 12a should be consistent with the lamp board 2 or slightly larger than the lamp board 2. The board 2 is used for accommodating the lamp board 2 with the light source 202 . When assembling, the light board 2 (or flexible circuit soft board) with the light source 202 is first arranged on the inner peripheral surface of the lamp tube 1, and then the reflective film 12 is pasted on the inner peripheral surface of the lamp tube, wherein the reflective film The openings 12a of 12 are in one-to-one correspondence with the lamp boards 2, so as to expose the lamp boards 2 outside the reflective film 12.

In one embodiment, the reflectance of the reflective film 12 is at least greater than 85%, and the reflective effect is relatively good, generally above 90%, preferably above 95%, to obtain a more ideal reflective effect. The length of the reflective film 12 extending along the circumferential direction of the lamp tube 1 occupies 30% to 50% of the circumference of the entire lamp tube 1, that is to say, along the circumferential direction of the lamp tube 1, the circumferential length of the reflective film 12 is the same as that in the lamp tube 1. The ratio between the circumferences of the peripheral surfaces ranges from 0.3 to 0.5. It should be noted that the present invention only takes the light board 2 disposed at the middle position of the reflective film 12 along the circumferential direction as an example, that is to say, the reflective films 12 on both sides of the light board 2 have substantially the same area, as shown in FIG. 17 Show. The material of the reflective film can be any one of PET, strontium phosphate and barium sulfate, or a combination of any two, or a combination of three, the reflection effect is better, and the thickness is between 140 μm and 350 μm, generally between 150 μm and 220 μm Between, the effect is better. As shown in FIG. 18, in other embodiments, the reflective film 12 can only be provided on one side of the lamp panel 2, that is, the reflective film 12 is in contact with the circumferential side of the lamp panel 2, and one side of the circumferential direction occupies the circumference of the lamp tube 1. The ratio of is also 0.3 to 0.5. Or, as shown in Fig. 19 and Fig. 20, the reflective film 12 may not have openings, and the reflective film 12 may be directly attached to the inner peripheral surface of the lamp tube 1 during assembly, and then the lamp panel 2 with the light source 202 It is fixed on the reflective film 12, where the reflective film 12 can also extend along the circumferential direction of the lamp tube on one side or both sides of the lamp board 2 respectively.

The various types of reflective films 12 and various types of diffuser films 13 described in the above embodiments can be combined arbitrarily, so as to realize the optical effect of independent reflection, independent diffusion or simultaneous reflection and diffusion. For example, only the reflection film 12 may be provided without the diffusion film 13 , as shown in FIG. 19 , FIG. 20 and FIG. 21 .

In other embodiments, the width of the flexible circuit board can be widened. Since the surface of the circuit board includes a circuit protection layer of ink material, and the ink material has the function of reflecting light, the circuit board itself can be easily It can have the effect as the function of the reflective film 12 . Preferably, the ratio between the length of the flexible circuit flexible board extending along the circumference of the lamp tube 2 and the circumference of the inner peripheral surface of the lamp tube 2 ranges from 0.3 to 0.5. The flexible circuit soft board can be coated with a circuit protection layer. The circuit protection layer can be a kind of ink material, which has the function of increasing reflection. The widened flexible circuit soft board starts from the light source and extends circumferentially. The light source The light will be more concentrated by widening the part.

In other embodiments, the inner peripheral surface of the glass tube can all be coated with a diffusion coating, or partly coated with a diffusion coating (the place where the reflective film 12 is not coated), but no matter which way , the diffusion coating is preferably applied to the outer surface of the end region of the lamp tube 1, so that the bonding between the lamp cap 3 and the lamp tube 1 is stronger.

It should be added that in the above-mentioned embodiments of the present invention, one of the group consisting of a diffusion coating, a diffusion film, a reflective film and an adhesive film can be selected to be applied to the light emitted by the light source of the present invention. Optical treatment.

Please continue to refer to FIG. 2 , in an embodiment of the present invention, the LED straight tube lamp further includes an adhesive sheet 4 , a lamp board insulation film 7 and a light source film 8 . The lamp board 2 is pasted on the inner peripheral surface of the lamp tube 1 through the adhesive sheet 4 . As shown in the figure, the adhesive sheet 4 can be silica gel, and its form is not limited, and it can be several segments as shown in the figure, or a segment in the shape of a strip. Various forms of adhesive sheets 4 , various forms of lamp board insulation films 7 and various forms of light source films 8 can be combined with each other to form different embodiments of the present invention.

The lamp board insulation film 7 is coated on the surface of the lamp board 2 facing the light source 202, so that the lamp board 2 is not exposed, thereby playing an insulating role of isolating the lamp board 2 from the outside world. A through hole 71 corresponding to the light source 202 is reserved during glue application, and the light source 202 is disposed in the through hole 71 . The components of the lamp board insulating film 7 include vinyl polysiloxane, hydrogen polysiloxane and aluminum oxide. The thickness of the insulating film 7 of the light board is in the range of 100 μm to 140 μm (micrometer). If it is less than 100 μm, it will not have a sufficient insulating effect, and if it is greater than 140 μm, it will cause waste of materials.

The light source film 8 is coated on the surface of the light source 202 . The color of the light source film 8 is transparent to ensure light transmittance. After being coated on the surface of the light source 202, the shape of the light source film 8 can be granular, strip or sheet. Among them, the parameters of the light source film 8 include refractive index, thickness and the like. The allowable range of the refractive index of the light source film 8 is 1.22 to 1.6, if the refractive index of the light source film 8 is the root of the refractive index of the light source 202 shell, or the refractive index of the light source film 8 is the root of the refractive index of the light source 202 shell If the number is plus or minus 15%, the light transmittance is better. The light source housing here refers to a housing that accommodates LED grains (or chips). In this embodiment, the refractive index of the light source film 8 ranges from 1.225 to 1.253. The allowable thickness range of the light source film 8 is 1.1mm to 1.3mm. If it is less than 1.1mm, the light source 202 will not be covered, and the effect is not good. If it is greater than 1.3mm, the light transmittance will be reduced and the material cost will be increased.

When assembling, first apply the light source film 8 to the surface of the light source 202; then apply the lamp board insulation film 7 to one side surface of the lamp board 2; then fix the light source 202 on the lamp board 2; then place the lamp board 2 The side surface opposite to the light source 202 is pasted and fixed on the inner peripheral surface of the lamp tube 1 through the adhesive sheet 4; Or as shown in Figure 22, use the flexible circuit soft board 2 to climb over the transition zone 103 and weld with the power supply 5 (that is, pass through the transition zone 103 and weld with the power supply 5), or use the traditional wire bonding method to make the light board 2 It is electrically connected with the power supply 5, and finally the lamp holder 3 is connected to the enhanced transition area 103 by means of Figure 5 (with the structure of Figure 3-Figure 4) or Figure 7 (with the structure of Figure 6), forming a complete LED direct current tube lights.

In this embodiment, the lamp board 2 is fixed on the inner peripheral surface of the lamp tube 1 through the adhesive sheet 4, so that the lamp board 2 is attached to the inner peripheral surface of the lamp tube 1, so that the whole LED straight tube lamp can be enlarged. The light-emitting angle can expand the viewing angle. This setting can generally make the viewing angle exceed 330 degrees. By coating the lamp board insulating film 7 on the lamp board 2, and coating the insulating light source film 8 on the light source 202, the insulation treatment of the entire lamp board 2 is realized. In this way, even if the lamp tube 1 breaks, there will be no electric shock accident, which improves safety. sex.

Further, the inner or outer peripheral surface of the lamp tube 1 may be covered with an adhesive film (not shown), which is used to isolate the outside and the inside of the lamp tube 1 after the lamp tube 1 is broken. In this embodiment, the adhesive film is coated on the inner peripheral surface of the lamp tube 1 .

The composition of the adhesive film includes vinyl-terminated silicone oil, hydrogen-containing silicone oil, xylene and calcium carbonate. Among them, xylene is an auxiliary material. When the adhesive film is coated on the inner peripheral surface of the lamp tube 1 and cured, the xylene will volatilize, and its main function is to adjust the viscosity, and then adjust the thickness of the adhesive film.

In one embodiment, the thickness of the adhesive film ranges from 100 μm to 140 μm. If the thickness of the adhesive film is less than 100 μm, the explosion-proof performance is not enough, and when the glass is broken, the entire lamp tube will be cracked, and if the thickness is greater than 140 μm, the light transmittance will be reduced and the material cost will be increased. If the requirements for explosion-proof performance and light transmittance are looser, the thickness range of the adhesive film can also be relaxed to 10 μm to 800 μm.

In this embodiment, since the inside of the lamp tube is coated with an adhesive film, after the glass lamp tube is broken, the adhesive film will stick the fragments together, and will not form a through hole through the inside and outside of the lamp tube, thereby preventing users from touching The charged body inside the lamp tube 1 is used to avoid electric shock accidents. At the same time, the adhesive film with the above ratio can also diffuse light and transmit light, and improve the uniformity of light emission and light transmittance of the entire LED straight tube lamp. The adhesive film of this embodiment can be used in conjunction with the aforementioned adhesive sheet 4 , light board insulation film 7 and light source film 8 to form various embodiments of the present invention. It should be noted that when the light board 2 is a flexible circuit board, no adhesive film may be provided.

Further, the light board 2 can be any one of strip-shaped aluminum substrate, FR4 board or flexible circuit soft board. Since the lamp tube 1 of this embodiment is a glass lamp tube, if the lamp board 2 adopts a rigid strip-shaped aluminum substrate or FR4 board, then when the lamp tube breaks, for example, it is broken into two pieces, the entire lamp tube can still be kept as a straight tube At this time, users may think that the LED straight tube lamp can still be used and install it by themselves, which may easily lead to electric shock accidents. Since the flexible circuit soft board has strong flexibility and easy bending characteristics, it solves the problem of insufficient flexibility and bendability of the rigid strip aluminum substrate and FR4 board. Therefore, the light board 2 of this embodiment adopts a flexible In this way, when the lamp tube 1 breaks, it cannot support the broken lamp tube 1 to continue to be a straight tube state, so as to inform the user that the LED straight tube lamp cannot be used, and avoid electric shock accidents. Therefore, when the flexible circuit soft board is used, the electric shock problem caused by the broken glass tube can be alleviated to a certain extent. In the following embodiments, the flexible circuit flexible board is used as the light board 2 for illustration.

Please refer to FIG. 23 , the flexible circuit flexible board as the light board 2 includes a circuit layer 2a with conductive effect, and the light source 202 is arranged on the circuit layer 2a, and is electrically connected to the power supply through the circuit layer 2a. Referring to Fig. 23, in this embodiment, the flexible circuit board can also include a layer of dielectric layer 2b, overlapping with the circuit layer 2a, the area of the dielectric layer 2b is equal to that of the circuit layer 2a, and the circuit layer 2a is in the same area as the circuit layer 2a. The opposite surface of the electrical layer 2 b is used for setting the light source 202 . The circuit layer 2a is electrically connected to the power source 5 for passing direct current. The surface of the dielectric layer 2b opposite to the circuit layer 2a is bonded to the inner peripheral surface of the lamp tube 1 through the adhesive sheet 4 . Wherein, the circuit layer 2a may be a metal layer, or a power layer with wires (such as copper wires).

In other embodiments, the outer surfaces of the circuit layer 2a and the dielectric layer 2b may be coated with a circuit protection layer, and the circuit protection layer may be a kind of ink material, which has the functions of resisting soldering and increasing reflection. Alternatively, the flexible circuit flexible board may have a one-layer structure, that is, only one layer of circuit layer 2a, and then a layer of circuit protection layer of the above-mentioned ink material is coated on the surface of the circuit layer 2a. No matter it is a circuit layer 2a structure or a two-layer structure (one circuit layer 2a and one dielectric layer 2b), the circuit protection layer can be matched. The circuit protection layer can also be provided on one side of the flexible circuit board, for example, the circuit protection layer is only provided on the side with the light source 202 . It should be noted that the flexible circuit flexible board has a circuit layer structure 2a or a two-layer structure (a circuit layer 2a and a dielectric layer 2b), which is significantly higher than the general three-layer flexible substrate (two-layer circuit layer A layer of dielectric layer sandwiched between layers) is more flexible and easy to bend, so it can be matched with a lamp tube 1 with a special shape (for example: a non-straight tube lamp), and the flexible circuit soft board is closely attached to the On the tube wall of lamp tube 1. In addition, it is a better configuration for the flexible circuit flexible board to be closely attached to the wall of the lamp tube, and the fewer layers of the flexible circuit flexible board, the better the heat dissipation effect, and the lower the material cost, more environmentally friendly and flexible The effect can also be improved.

Of course, the flexible circuit flexible board of the present invention is not limited to one-layer or two-layer circuit boards. In other embodiments, the flexible circuit flexible board includes a multi-layer circuit layer 2a and a multi-layer dielectric layer 2b. The layer 2b and the circuit layer 2a will be alternately stacked in sequence and arranged on the side of the circuit layer 2a opposite to the light source 202. The light source 202 is arranged on the uppermost layer of the multilayer circuit layer 2a, passing through the uppermost layer of the circuit layer 2a and the light source 202. The power supply is electrically connected. In other embodiments, the length of the flexible circuit flexible board as the lamp board 2 is greater than the length of the lamp tube.

Please refer to FIG. 48. In one embodiment, the flexible circuit soft board as the light board 2 includes a first circuit layer 2a, a dielectric layer 2b and a second circuit layer 2c from top to bottom. The thickness of the second circuit layer 2c is greater than the thickness of the first circuit layer 2a, the length of the lamp board 2 is greater than the length of the lamp tube 1, wherein the lamp board 2 is not provided with a light source 202 and protrudes from the end area of the lamp tube 1, the first The circuit layer 2a and the second circuit layer 2c are electrically connected through two through holes 203 and 204 respectively, but the through holes 203 and 204 are not connected to each other to avoid short circuit.

In this way, since the second circuit layer 2c is relatively thick, it can support the first circuit layer 2a and the dielectric layer 2b, and at the same time make it difficult for the lamp board 2 to be attached to the inner tube wall of the lamp tube 1. Offset or deformation to improve manufacturing yield. In addition, the first circuit layer 2a and the second circuit layer 2c are electrically connected, so that the circuit layout on the first circuit layer 2a can be extended to the second circuit layer 2c, making the circuit layout on the light board 2 more diverse. Furthermore, the original circuit layout and routing are changed from a single layer to a double layer. The single layer area of the circuit layer on the light board 2, that is, the size in the width direction, can be further reduced, so that the number of light boards for batch bonding can be reduced. Can increase and increase productivity.

Further, the first circuit layer 2a and the second circuit layer 2c protruding from the end area of the lamp tube 1 without the light source 202 on the lamp panel 2 can also be directly used to realize the circuit layout of the power module, and Allowing the power module to be directly configured on the flexible circuit board can be realized.

Please continue to refer to FIG. 2 , several light sources 202 are provided on the lamp board 2 , and a power source 5 is provided inside the lamp holder 3 . The light sources 202 and the power source 5 are electrically connected through the lamp board 2 . In each embodiment of the present invention, the power supply 5 can be a single body (that is, all power supply modules are integrated in one component), and it is arranged in the lamp cap 3 at one end of the lamp tube 1; or the power supply 5 can also be divided into two parts, called It is a double body (that is, all power supply modules are respectively arranged in two parts), and the two parts are respectively arranged in the lamp caps 3 at both ends of the lamp tube. If only one end of the lamp tube 1 is treated as a strengthened part, the power supply is preferably selected as a single body, and is arranged in the lamp cap 3 corresponding to the strengthened end area 101 .

Regardless of whether it is a single body or a double body, there are multiple options for the formation of the power supply. For example, the power supply can be a module after potting and molding. Specifically, a high thermal conductivity silica gel (thermal conductivity ≥ 0.7w/m ·k), the power supply module is potted and molded through the mold to obtain the power supply. The power supply obtained in this way has the advantages of high insulation, high heat dissipation, and more regular shape, and can be easily matched with other structural parts. Alternatively, the power supply can also be molded without potting glue, and the exposed power module can be directly placed inside the lamp holder, or the exposed power module can be wrapped with a traditional heat-shrinkable tube, and then placed inside the lamp holder 3 . In other words, in each embodiment of the present invention, the power supply 5 may appear in the form of a single printed circuit board mounted power module as shown in FIG. 23 , or in the form of a single body module as shown in FIG. 38 .

Referring to Figure 2 and Figure 38, in one embodiment, one end of the power supply 5 has a male plug 51, the other end has a metal pin 52, the end of the lamp board 2 is provided with a female plug 201, and the lamp holder 3 is provided with a A hollow conductive pin 301 connected to an external power source. The male plug 51 of the power supply 5 is plugged into the female plug 201 of the lamp board 2 , and the metal pin 52 is plugged into the hollow conductive pin 301 of the lamp holder 3 . At this time, the male plug 51 and the female plug 201 are equivalent to adapters for electrically connecting the power supply 5 and the lamp board 2 . When the metal pin 52 is inserted into the hollow conductive pin 301, the hollow conductive pin 301 is impacted by an external punching tool, so that the hollow conductive pin 301 is slightly deformed, thereby fixing the metal pin 52 on the power supply 5 and realizing electrical connection. When energized, the current passes through the hollow conductive pin 301 , the metal pin 52 , the male plug 51 and the female plug 201 to reach the lamp board 2 in sequence, and then reaches the light source 202 through the lamp board 2 . However, the structure of the power supply 5 is not limited to the modular form shown in FIG. 38 . The power supply 5 can be a printed circuit board carrying a power supply module, and is electrically connected to the lamp board 2 by means of a male plug 51 and a female plug 201 .

In other embodiments, any type of electrical connection between the power supply 5 and the light board 2 can also be replaced by the traditional wire bonding method to replace the above-mentioned male plug 51 and female plug 201, that is, a traditional metal wire is used to connect the One end of the metal wire is electrically connected to the power supply, and the other end is electrically connected to the light board 2 . Further, the metal wire can be covered with an insulating sleeve to protect users from electric shock. However, the way the wires are connected by wires may break during transportation, and the quality is slightly poor.

In other embodiments, the electrical connection between the power supply 5 and the lamp board 2 can be directly connected together by rivet bonding, solder paste bonding, welding or wire binding. Consistent with the fixing method of the aforementioned light board 2, one side surface of the flexible circuit flexible board is bonded and fixed to the inner peripheral surface of the lamp tube 1 through the adhesive sheet 4, and the two ends of the flexible circuit flexible board can be selected Fixed or not fixed on the inner peripheral surface of the lamp tube 1 .

If the two ends of the flexible circuit flexible board are fixed on the inner peripheral surface of the lamp tube 1, it is preferred to set the female plug 201 on the flexible circuit flexible board, and then insert the male plug 51 of the power supply 5 into the female plug 201 to realize Electrical connections.

If the two ends of the lamp board 2 along the axial direction of the lamp tube 1 are not fixed on the inner peripheral surface of the lamp tube 1, and if they are connected by wires, during the subsequent moving process, since the two ends are free, it is easy to Vibration occurs, which may cause the wire to break. Therefore, the preferred connection method between the lamp board 2 and the power supply 5 is welding. Specifically, referring to FIG. 22 , the lamp panel 2 can be directly welded to the output end of the power supply 5 after climbing over the transition zone 103 of the reinforcement structure, eliminating the use of wires and improving the stability of product quality. At this time, the lamp board 2 does not need to be provided with a female plug 201 , and the output end of the power supply 5 does not need to be provided with a male plug 51 .

As shown in Figure 24, the specific method can be to leave the output end of the power supply 5 for the power supply pad a, and leave tin on the power supply pad a, so that the thickness of the tin on the pad is increased to facilitate welding. Correspondingly, The light source pad b is also left on the end of the lamp board 2 , and the power pad a at the output end of the power supply 5 is welded together with the light source pad b of the lamp board 2 . If the plane where the solder pads are located is defined as the front side, then the connection between the lamp board 2 and the power supply 5 is the most stable connection between the pads on the front of the two. Board 2 is used to heat the solder, which is relatively prone to reliability problems. If, as shown in Figure 30, a hole is made in the middle of the light source pad b on the front of the lamp board 2, and then it is superimposed on the power pad a on the front of the power supply 5 for soldering, the soldering head can directly touch the solder Heating and melting is relatively easy to realize in practical operation.

As shown in Figure 24, in the above-mentioned embodiment, most of the flexible circuit soft board as the lamp board 2 is fixed on the inner peripheral surface of the lamp tube 1, only at both ends are not fixed on the inner peripheral surface of the lamp tube 1 Above, the lamp board 2 not fixed on the inner peripheral surface of the lamp tube 1 forms a free part 21, and the lamp board 2 is fixed on the inner peripheral surface of the lamp tube 1. The free portion 21 has the aforementioned pad b. When assembling, the free part 21 and the end welded by the power source 5 will drive the free part 21 to shrink toward the inside of the lamp tube 1 . It is worth noting that when the flexible circuit board used as the lamp board 2 has a structure with two circuit layers 2a and 2c sandwiching a dielectric layer 2b as shown in Figure 48, the lamp board 2 does not have a light source 202 and The end area protruding from the lamp tube 1 can be used as the free part 21, so that the free part 21 realizes the connection of the two-layer circuit layer and the circuit layout of the power module.

In this embodiment, when the lamp board 2 and the power supply 5 are connected, the pads b and a and the surface of the light source 202 on the lamp board face the same direction, and the pad b on the lamp board 2 is formed with a The through hole e makes the pad b and pad a communicate with each other. When the free part 21 of the lamp board 2 shrinks and deforms towards the inside of the lamp tube 1 , the welding connection part between the printed circuit board of the power supply 5 and the lamp board 2 has a lateral pulling force on the power supply 5 . Furthermore, compared to the situation where the pad a of the power supply 5 and the pad b on the lamp board 2 are face to face, the solder connection between the printed circuit board of the power supply 5 and the lamp board 2 has a connection with the power supply 5. downward pull. This downward pulling force comes from the solder in the through hole e to form a more strengthened and firm electrical connection between the power supply 5 and the lamp board 2 .

As shown in Figure 25, the light source pad b of the light board 2 is two unconnected pads, which are electrically connected to the positive and negative electrodes of the light source 202 respectively. The size of the pads is about 3.5×2mm ² . There is also a corresponding pad on the top of the pad. There is tin reserved on the top of the pad for automatic welding of the welding machine. The thickness of the tin can be 0.1 to 0.7mm, and the preferred value is 0.3 to 0.5mm. 0.4mm for the best. An insulating hole c can be set between the two pads to avoid an electrical short circuit caused by the welding of the two pads during the soldering process. In addition, a positioning hole d can also be set behind the insulating hole c for use So that the automatic welding machine can correctly judge the correct position of the pad b of the light source.

There is at least one light source pad b of the light board, which is electrically connected to the positive and negative electrodes of the light source 202 respectively. In other embodiments, in order to achieve compatibility and expandability in subsequent use, the number of light source pads b may be more than one, such as 2, 3, 4 or more than 4. When there is only one pad, the corresponding two ends of the light board will be electrically connected to the power supply to form a circuit. At this time, electronic components can be used instead, for example, inductors can be used instead of capacitors as current stabilizing components. As shown in Figures 26 to 28, when there are three pads, the third pad can be used as a ground, and when there are four pads, the fourth pad can be used as a signal input terminal. Correspondingly, the power pads a and the light source pads b have the same number. When there are more than 3 pads, the pads can be arranged in one row or in two rows, and they can be arranged in appropriate positions according to the size of the accommodation area in actual use, as long as they are not electrically connected to each other to cause a short circuit. In other embodiments, if part of the circuit is made on the flexible circuit board, the pad b of the light source can be a single one. The fewer the number of pads, the more economical the process in the process; The electrical connection between the flexible circuit board and the output terminal of the power supply is more and more strengthened.

As shown in FIG. 30 , in other embodiments, the light source pad b may have a welding hole e inside, and the diameter of the welding hole e may be 1 to 2 mm, preferably 1.2 to 1.8 mm, and most preferably 1.5 mm , if it is too small, the tin used for soldering will not be easy to pass through. When the power supply pad a of the power supply 5 is welded together with the light source pad b of the lamp board 2, the tin used for welding can pass through the welding perforation e, and then accumulate on the welding perforation e to cool and condense, forming a The solder ball structure g with a diameter of perforation e, this solder ball structure g will function like a nail, in addition to being fixed through the tin between the power supply pad a and the light source pad b, it can also be due to the solder ball structure g function to enhance the stability of the electrical connection.

As shown in Fig. 31 to Fig. 32, in other embodiments, when the distance from the soldering hole e of the light source pad b to the edge of the light board 2 is less than or equal to 1 mm, the soldering tin will pass through the hole e and accumulate in the hole On the upper edge, too much tin will also flow back from the edge of the light board 2 to the bottom, and then condense with the tin on the power pad a. Its structure is like a rivet that firmly nails the light board 2 to the power supply 5 The circuit board has a reliable electrical connection function. As shown in Figure 33 and Figure 34, in other embodiments, the welding notch f replaces the welding perforation e, the welding perforation of the pad is at the edge, and the tin used for soldering passes through the welding notch f to connect the power supply pad a It is electrically connected to the pad b of the light source, and tin is easier to climb up the pad b of the light source and accumulate around the welding gap f. After cooling and condensing, more tin will form a solder ball with a diameter larger than the solder gap f. This solder ball The structure will enhance the fixing ability of the electrical connection structure. In this embodiment, because of the design of the welding notch, the soldering tin functions like a C-shaped nail.

The structure described in this embodiment can be achieved no matter whether the soldering hole of the pad is formed first, or directly pierced by a soldering pressure head or a thermal pressure head as shown in FIG. 40 during the welding process. The surface of the soldering head in contact with the solder can be flat, concave, convex or a combination of these; and the surface of the soldering head used to limit the object to be soldered, such as the lamp board 2, can be strip-shaped or Grid shape, the surface in contact with the solder does not completely cover the perforation, ensuring that the solder can pass through the perforation, and when the solder passes out of the perforation and accumulates around the perforation, the recess can provide a place for the solder ball. In other embodiments, the flexible circuit flexible board as the lamp board 2 has a positioning hole, through which the pads of the power supply pad a and the light source pad b can be precisely positioned during soldering.

Please refer to Figure 40. In the above-mentioned embodiment, the light source pad b of the light board 2 and the power pad a of the power supply 5 can be fixed by welding. The middle line is directly punched through with the welding pressure head 41. As shown in Figure 40, the welding pressure head 41 can be roughly divided into four areas: the welding surface 411, the diversion groove 412, the tin forming groove 413 and the pressing surface 414, and the welding surface 411 is the surface actually in contact with the solder , to provide the pressure and heat source during welding, its shape can be flat or concave or convex or a combination of the above, the pressing surface 414 is the surface actually in contact with the welding object such as the lamp board 2, which can be strip-shaped or Grid shape, the pressure welding surface 411 will not completely cover the hole on the pad, and there are a plurality of arc-shaped concave diversion grooves 412 at the lower edge of the welding pressure welding surface 411 in the middle of the welding pressure head 41, Its main function is to ensure that the solder heated and melted by the bonding surface 411 can flow from the concave diversion space into the holes or gaps passing through the pad, so the diversion groove 412 has the functions of diversion and stopper , when the solder passes through holes or gaps and accumulates around its surface, the tin forming groove 413 located below the diversion groove 412 is more concave than the diversion groove 412, which is to provide the accommodating position for the solder to condense into solder balls. In addition, the plane slightly lower than the welding surface 411 around the forming groove 413 is the pressing surface 414. The thickness difference between it and the welding surface 411 is the thickness of the lamp board 2. Press and fix the lamp board 2 on the printed circuit board of the power supply 5 .

Please refer to Figure 41, Figure 25 and Figure 40, the printed circuit boards of the lamp board 2 and the power supply 5 also have corresponding pads, and there is reserved tin on the top of the pads to facilitate automatic welding by the welding machine. The thickness of the tin preferably ranges from 0.3 to 0.5 mm so that the lamp board 2 can be firmly welded to the printed circuit board of the power supply 5 . If it happens as shown in Figure 41, when the difference in the thickness of the reserved tin on the two pads is too large, during the soldering process of the welding pressure head 41, it will happen that one pad has first contacted the reserved tin and is heated and melted. The other reserved tin will not begin to melt until the aforementioned reserved tin melts to the same height and is contacted by the soldering head 41. In this way, the soldering pad with a lower thickness of the reserved tin will often experience unreliable welding. This further affects the electrical connection between the lamp board 2 and the printed circuit board of the power supply 5 . Therefore, this embodiment uses the principle of dynamic balance to solve this situation. In this embodiment, a linkage mechanism can be set on the equipment of welding pressure head 41. The starting welding pressure head 41 is a rotatable mechanism. When the pressure value of the remaining tin is the same, the above-mentioned situation can be solved by applying the process of mixing and pressing.

In the above-mentioned embodiment, the welding pressure process is achieved by the dynamic balance principle that the lamp board 2 and the printed circuit board of the power supply 5 do not move while the welding pressure head 41 of the welding machine is rotated. In other embodiments, as shown in FIG. 42 As shown, the welding pressure process is achieved by the principle of dynamic balance that the welding pressure head 41 does not move and the lamp board 2 rotates. Firstly, place the printed circuit board of the lamp board 2 and the power supply 5 on a carrier device (or welding carrier) 60, and the carrier device 60 includes a lamp board carrier (or called a rotating platform) 61 for carrying The printed circuit boards of the lamp board 2 and the power supply 5 , and a carrier bracket 62 are used to carry the lamp board carrier 61 . The lamp panel carrier 61 includes a rotating shaft 63 and two elastic components 64 respectively disposed on two sides of the rotating shaft to keep the lamp panel carrier 61 in a horizontal state when the lamp panel carrier 61 is empty. In this embodiment, the elastic component 64 is a spring, and one end of the spring is respectively set on the carrier bracket 62 as a fulcrum. When the board carrier 61 is on, the lamp board carrier 61 will be driven by the rotating shaft 63 to rotate, and the soldering process will not start until the soldering head 41 detects that the pressure of the reserved tin on both sides is equal, as shown in Figure 43 As shown, at this time, the elastic components 64 on both sides of the rotating shaft are subjected to a tensile force and a compressive force respectively. 64 to make the lamp panel carrier 61 return to the original horizontal state.

Of course, the lamp panel carrier 61 of this embodiment can also be realized by other mechanisms, and the rotating shaft 63 and the elastic component 64 are not necessary, for example, a driving motor, an active rotating mechanism, etc. are built in the lamp panel carrier 61, At this time, the carrier bracket 62 (the role of the fixed elastic component 64) is not an essential component, and any variation of the welding pressure process achieved by using the principle of dynamic balance to drive the lamp panel 2 to rotate does not depart from the scope of the present invention. The following will not repeat them.

Please refer to FIG. 35 and FIG. 36 , in other embodiments, the lamp board 2 and power supply 5 fixed by welding can be replaced by a circuit board assembly 25 equipped with a power module 250 . The circuit board assembly 25 has a long circuit board 251 and a short circuit board 253 , the long circuit board 251 and the short circuit board 253 are attached to each other and fixed by bonding, and the short circuit board 253 is located near the periphery of the long circuit board 251 . There is a power supply module 25 on the short circuit board 253, which constitutes a power supply as a whole. The material of the short circuit board 253 is harder than that of the circuit board 251 to support the power module 250 .

The long circuit board 251 can be the above-mentioned flexible circuit soft board or flexible substrate as the lamp board 2, and has the circuit layer 2a shown in FIG. 23 . The electrical connection between the circuit layer 2a of the light board 2 and the power supply module 250 may vary according to actual usage conditions. As shown in Figure 35, the circuit layer 2a on the power module 250 and the long circuit board 251 that will be electrically connected to the power module 250 is located on the same side of the short circuit board 253, and the power module 250 is directly electrically connected to the long circuit board 251. connect. As shown in Figure 36, the circuit layer 2a on the power module 250 and the long circuit board 251 that will be electrically connected to the power module 250 are respectively located on both sides of the short circuit board 253, and the power module 250 penetrates through the short circuit board 253 is electrically connected to the circuit layer 2a of the lamp board 2.

As shown in Figure 35, in one embodiment, the circuit board assembly 25 omits the situation that the lamp board 2 and the power supply 5 in the foregoing embodiments are to be fixed by welding, but first the long circuit board 251 and the short circuit board 253 is bonded and fixed, and then the power module 250 is electrically connected to the circuit layer 2a of the lamp board 2 . In addition, as mentioned above, the light board 2 is not limited to one-layer or two-layer circuit boards, and may also include another circuit layer 2c as shown in FIG. 48 . The light source 202 is disposed on the circuit layer 2a, and is electrically connected to the power source 5 through the circuit layer 2a. As shown in Figure 36, in another embodiment, the circuit board assembly 25 has a long circuit board 251 and a short circuit board 253, the long circuit board 251 can be the flexible circuit soft board or flexible circuit board of the above-mentioned light board 2 The substrate, the light board 2 includes a circuit layer 2a and a dielectric layer 2b, the dielectric layer 2b and the short circuit board 253 are firstly connected by splicing, and then the circuit layer 2a is attached to the dielectric layer 2b and Extend to the short circuit board 253 . The above embodiments do not depart from the scope of application of the circuit board assembly 25 of the present invention.

In each of the above-mentioned embodiments, the length of the short circuit board 253 is about 15 mm to 40 mm, preferably 19 mm to 36 mm, and the length of the long circuit board 251 can be 800 mm to 2800 mm, preferably 1200 mm to 2800 mm. 2400mm. The ratio of the short circuit board 253 to the long circuit board 251 may be 1:20 to 1:200.

In addition, in the foregoing embodiments, when the lamp board 2 and the power supply 5 are fixed by welding, the end of the lamp board 2 is not fixed on the inner peripheral surface of the lamp tube 1, and the power supply cannot be safely fixed and supported. 5. In other embodiments, if the power supply 5 must be fixed in the lamp cap at the end of the lamp tube 1, the lamp cap will be relatively long and the effective light-emitting area of the lamp tube 1 will be compressed.

Please refer to FIG. 39. In one embodiment, the used lamp board is an aluminum rigid circuit board 22, because its ends can be relatively fixed on the end area of the lamp tube 1, and the power supply 5 is vertical to the rigid circuit board. 22 is welded and fixed above the end of the hard circuit board 22, which facilitates the implementation of the welding process, and secondly, the lamp holder 3 does not need to have enough space to carry the total length of the power supply 5 and can shorten the length, so that the effective lamp tube can be increased. Luminous area. In addition, in the aforementioned embodiments, in addition to the power supply module installed on the power supply 5 , metal wires need to be welded to form an electrical connection with the hollow conductive pin 301 of the lamp cap 3 . In this embodiment, it can be directly used on the power supply 5 as the conductive pin 53 of the power supply module to be electrically connected to the lamp holder 3 without additional welding of other wires, which is more conducive to the simplification of the manufacturing process.

Referring to FIG. 37 , in various embodiments of the present invention, the light source 202 can be further improved to include a bracket 202b having a groove 202a, and an LED die (or chip) 18 disposed in the groove 202a. There may be one or more grooves 202a. Phosphor powder is filled in the groove 202a, and the phosphor powder covers the LED grain (or chip) 18 to play the role of light color conversion. It should be noted that, compared with the square shape in which the ratio of the length to the width of the traditional LED grain (or chip) is about 1:1, the LED grain (or chip) 18 used in each embodiment of the present invention The ratio of the length to the width can range from 2:1 to 10:1, and the ratio of the length to the width of the LED grain (or chip) 18 used in each embodiment of the present invention is preferably from 2.5:1 to 5:1 , the optimal range is 3:1 to 4.5:1. In this way, the length direction of the LED grain (or chip) 18 is arranged along the length direction of the lamp tube 1, which improves the LED grain (or chip) 18. The average current density and the overall light shape of the lamp tube 1 and the like.

Please refer to FIG. 37 again, the bracket 202b of at least one light source 202 has a first side wall 15 arranged along the length direction of the lamp tube and extending along the width direction of the lamp tube, and arranged along the width direction of the lamp tube and extending along the length direction of the lamp tube The second sidewall 16, the first sidewall 15 is lower than the second sidewall 16, and the two first sidewalls 15 and the two second sidewalls surround the groove 202a. The first side wall 15 extends "along the width direction of the lamp tube 1", as long as the extension trend is basically the same as the width direction of the lamp tube 1, it is not required to be strictly parallel to the width direction of the lamp tube 1, for example, the first side wall 15 can have a slight angle difference with the width direction of the lamp tube 1, or the first side wall 15 can also be in various shapes such as zigzag, arc, wave, etc.; "Extension, as long as the extension trend is basically the same as the length direction of the lamp tube 1, it is not required to be strictly parallel to the length direction of the lamp tube 1. For example, the second side wall 16 may have a slight angle difference with the length direction of the lamp tube 1 Alternatively, the second side wall 16 may also be in various shapes such as a zigzag shape, an arc shape, and a wave shape. In each embodiment of the present invention, in a row of light sources, the sidewalls of the support with one or more light sources are also allowed to be arranged or extended in other ways.

In each embodiment of the present invention, the first side wall 15 is lower than the second side wall 16, so that the light can easily diverge over the bracket 202b, and through the design of moderate spacing, no discomfort of particles can be generated in the Y direction In each embodiment of the present invention, if the first side wall is not lower than the second side wall, the light sources 202 in each column must be arranged more closely to reduce graininess and improve performance. On the other hand, when the user observes the light tube from the side of the light tube, for example, along the X direction, the second side wall 16 can block the user's line of sight from seeing the light source 202 directly, so as to reduce the uncomfortable feeling of particles.

Please refer to FIG. 37 again. In various embodiments of the present invention, the inner surface 15a of the first side wall 15 can be set as a slope. Compared with the form in which the inner surface 15a is set perpendicular to the bottom wall, the setting of the slope makes It is easier for light to escape through the slope. The slope may comprise a plane or an arc, or the slope may be a combination of a plane and an arc. When a plane is used, the slope of the plane is approximately between 30 degrees and 60 degrees. That is to say, the included angle between the planar slope and the bottom wall of the groove 202a ranges from 120 degrees to 150 degrees. Preferably, the slope of the plane is about 15° to 75°, that is to say, the included angle between the slope of the plane and the bottom wall of the groove 202a is within a range of 105° to 165°.

In each embodiment of the present invention, there are multiple light sources 202 in one lamp tube 1, and the multiple light sources 202 can be arranged in one or more rows, and each row of light sources 202 is arranged along the axial direction (Y direction) of the lamp tube 1. cloth. When a plurality of light sources 202 are arranged in a row along the length direction of the lamp tube, among the brackets 202b of the plurality of light sources 202, all the second side walls 16 on the same side along the width direction of the lamp tube are on the same straight line, that is, on the same side The second side wall 16 forms a structure similar to a wall, so as to block the user's line of sight from seeing the light source 202 directly. When a plurality of light sources 202 are arranged in multiple rows along the length direction of the lamp tube, and arranged along the axial direction (Y direction) of the lamp tube 1, only the light sources 202 in the outermost two rows (that is, adjacent to the tube wall of the lamp tube) The bracket 202b of the two rows of light sources 202) has two first side walls 15 arranged along the length direction (Y direction) of the lamp tube 1 and two second side walls arranged along the width direction (X direction) of the lamp tube 1 16, that is to say, the brackets 202b of the light sources 202 in the two outermost rows have a first side wall 15 extending along the width direction (X direction) of the lamp tube 1, and a first side wall 15 extending along the length direction (Y direction) of the lamp tube 1 The second side wall 16 is sufficient, and the arrangement direction of the brackets 202b of the light sources 202 in other rows between the two rows of light sources 202 is not limited. There may be two first side walls 15 arranged along the length direction (Y direction) of the lamp tube 1 and two second side walls 16 arranged along the width direction (X direction) of the lamp tube 1, or each bracket 202b may There are two first side walls 15 arranged along the width direction of the lamp tube 1 (X direction) and two second side walls 16 arranged along the length direction of the lamp tube 1 (Y direction), or staggered arrangement, etc., as long as When the user observes the lamp tube from the side of the lamp tube, for example, along the X direction, the second side wall 16 of the bracket 202b in the outermost two rows of light sources 202 can block the user's line of sight from seeing the light source 202 directly, which can reduce the discomfort of the particles feel. For the two outermost rows of light sources, other arrangement or extension methods are also allowed for the side walls of the support with one or more light sources therein.

Based on the above, when multiple light sources 202 are arranged in a row along the length direction of the lamp tube, the second side walls 16 of the brackets 202b of all the light sources 202 need to be located on the same straight line, that is, the second side walls 16 on the same side form The structure is similar to a wall, so as to block the user's line of sight from seeing the light source 202 directly. When multiple light sources 202 are arranged in multiple rows along the length direction of the lamp tube, the outermost second side walls 16 of the brackets 202b of all light sources 202 in the two outermost rows along the width direction of the lamp tube need to be located on two straight lines respectively , to form a structure similar to two walls, so as to block the user's line of sight from directly seeing the light source 202; and for one or several columns of light sources 202 in the middle, there is no requirement for the arrangement and extension of the side walls, and it can be combined with the outermost two columns The light sources 202 are the same, and other different arrangements may also be used.

The implementation of the LED straight tube lamp of the present invention in each embodiment is as described above. It should be reminded that, in each embodiment, for the same LED straight tube lamp, in "the lamp tube has a reinforced structure", "the lamp board adopts a flexible circuit soft board", "the inner peripheral surface of the lamp tube Coated with adhesive film", "The inner surface of the lamp tube is coated with a diffusion film", "The light source is covered with a diffusion film", "The inner wall of the lamp tube is coated with a reflective film", "The lamp cap is a lamp cap including a heat conduction part", "The lamp cap Among the characteristics such as "lamp holder including magnetic conductive metal sheet", "light source with bracket", "power supply with long and short circuit board assembly", only one or more technical features may be included.

In addition, the content about "the light tube has a reinforced structure" can be selected from one or a combination of the relevant technical features in the embodiments, and the content about "the light board adopts a flexible circuit board" It can be selected from one or a combination of its related technical features included in the embodiments, wherein the content about "the inner surface of the lamp tube is coated with an adhesive film" can be selected from the related technical features included in the embodiments. One or a combination of the technical features, wherein the content about "the inner surface of the lamp tube is coated with a diffusion film" can be selected from one or a combination of the related technical features contained in the embodiments, among which the " The content of "the light source is covered with a diffuser film" can be selected from one or a combination of the related technical features in the embodiments, and the content of "the inner wall of the lamp tube is coated with a reflective film" can be selected from the There is one or a combination of its relevant technical features in the embodiments, wherein the content about "the lamp cap is a lamp cap including a heat conduction part" can be selected from one or its combination of the relevant technical features in the embodiments , wherein the content about "the lamp head is a lamp head including a magnetically conductive metal sheet" can be selected from one or a combination of the relevant technical features contained in the embodiments, and the content about "the light source has a bracket" is optional It comes from one or a combination of its relevant technical features in the embodiments.

For example, in a lamp tube having a reinforced structure, the lamp tube includes a body region and end regions respectively located at both ends of the body region, a transition region is provided between the end regions and the body region, and the transition region Both ends are arc-shaped, each of the end regions is sleeved on a lamp cap, and the outer diameter of at least one of the end regions is smaller than the outer diameter of the body region, and correspondingly, the outer diameter is smaller than the outer diameter of the body region The lamp cap has an outer diameter equal to that of the body region.

For example, when the light board adopts a flexible circuit board, the flexible circuit board is connected to the output end of the power supply by wire bonding or the flexible circuit board is connected to the output terminal of the power supply. Solder between the output terminals. In addition, the flexible circuit flexible board includes a stack of a dielectric layer and a circuit layer; the flexible circuit flexible board can be coated with a circuit protection layer of ink material on the surface, and the width along the circumference can be increased to achieve The function of the reflective film.

For example, in the case where the inner peripheral surface of the lamp tube is coated with a diffusion film, the composition of the diffusion coating includes at least one of calcium carbonate, calcium halophosphate and aluminum oxide, as well as a thickener and ceramic activated carbon. In addition, the diffusion film can also be a diffusion film and is covered outside the light source.

For example, when the inner wall of the lamp tube is coated with a reflective film, the light source can be arranged on the reflective film, in the opening of the reflective film, or on the side of the reflective film.

For example, in the design of the lamp holder, the lamp holder may include an insulating tube and a heat conducting part, wherein the hot melt adhesive may fill a part of the accommodating space or fill the entire accommodating space. Alternatively, the lamp head includes an insulating tube and a magnetically conductive metal part, wherein the magnetically conductive metal part can be circular or non-circular, and the contact area with the insulating tube can be reduced by setting holes, indentations or embossments. In addition, support parts and protrusions can also be provided in the insulating tube to strengthen the support for the magnetically conductive metal part and reduce the contact area between the magnetically conductive metal part and the insulating tube.

For example, in the design of the light source, the light source includes a bracket with a groove, and LED crystal grains arranged in the groove; the bracket has a first side wall arranged along the length direction of the lamp tube, and The second side wall arranged along the width direction of the lamp tube, the first side wall is lower than the second side wall.

For example, in power supply design, the combination of long and short circuit boards has a long circuit board and a short circuit board. The long circuit board and the short circuit board are attached to each other and fixed by bonding. The short circuit board is located near the periphery of the long circuit board. . A power supply module is provided on the short circuit board to form a power supply as a whole.

That is to say, the above-mentioned features can be arranged in any combination and used for improvement of LED straight tube lamps. Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Claims (10)

1. a LED straight lamp, comprising: the lamp holder of described fluorescent tube one end is located at by a fluorescent tube and; One power supply, is located in described lamp holder; One lamp plate, be located in described fluorescent tube, described lamp plate is provided with at least one light source; By described lamp plate electrical communication between described light source and described power supply; It is characterized in that, described power supply comprises a first circuit board and a power supply module, described lamp plate comprises a second circuit board, and the length of described second circuit board is greater than the length of described first circuit board, and described first circuit board and described second circuit board are fitted formation one circuit board group component each other.

2. LED straight lamp as claimed in claim 1, it is characterized in that, described first circuit board is a rigid circuit board.

3. LED straight lamp as claimed in claim 1, is characterized in that, described power supply module is surperficial with phase the same side of a Electricity road plate described in described 2nd plate position, Electricity road what.

4. LED straight lamp as claimed in claim 1, is characterized in that, the 2nd Electricity road plate described in described power supply mould group With respectively a Electricity road plate described in the what of position back to both side surface.

5. LED straight lamp as claimed in claim 1, it is characterized in that, described second circuit board comprises a line layer and a dielectric layer, and described power supply module and described first circuit board are electrically connected and described first circuit board and described line layer are electrically connected.

6. LED straight lamp as claimed in claim 1, it is characterized in that, described second circuit board comprises a line layer and a dielectric layer, and described power supply module is directly electrically connected with described line layer.

7. a LED straight lamp, comprising: the lamp holder of described fluorescent tube one end is located at by a fluorescent tube and; One power supply, is located in described lamp holder; One lamp plate, be located in described fluorescent tube, described lamp plate is provided with at least one light source; By described lamp plate electrical communication between described light source and described power supply; It is characterized in that, described power supply comprises a rigid circuit board and a power supply module, described lamp plate comprises a bendable circuit soft board, and the length of described bendable circuit soft board is greater than the length of described rigid circuit board, described rigid circuit board and described bendable circuit soft board are fitted each other and are positioned at bendable circuit soft board adjacent peripheral edges, form a circuit board group component.

8. LED straight lamp as claimed in claim 7, is characterized in that, described power supply module is surperficial with phase the same side of rigid circuit board described in the what of described bendable circuit soft board position, and described power supply module and described bendable circuit soft board are directly electrically connected.

9. LED straight lamp as claimed in claim 7, it is characterized in that, described power supply module and described bendable circuit soft board respectively rigid circuit board described in the what of position back to both side surface, described power supply module and described rigid circuit board are electrically connected and described rigid circuit board and described bendable circuit soft board are electrically connected.

10. a LED straight lamp, comprising: a fluorescent tube and be located at two lamp holders of described lamp tube ends respectively; One power supply, is located in described lamp holder, has a first circuit board and is fixed in the power supply module on described first circuit board; One lamp plate, is located in described fluorescent tube, has a second circuit board, and described lamp plate is provided with light source; By described second circuit board electrical communication between described light source and described power supply; It is characterized in that, described second circuit board is bendable circuit soft board and length is greater than the length of described fluorescent tube, the length of described second circuit board is greater than the length of described first circuit board, and described first circuit board gluing is on described second circuit board and be positioned at described second circuit board adjacent peripheral edges.