CN104201276B - Peripherally light-emitting strip-shaped light source - Google Patents

Abstract

The invention relates to a strip light source emitting light on the surrounding surface. In LED filament lamps, the filament as a light source is composed of an LED unit, a substrate, and a package. After opening holes in the substrate, although the light can reach the back of the substrate, the heat dissipation area is reduced, and there is a contradiction between light transmission and heat dissipation. The light transmission hole of the present invention surrounds the LED unit on three sides, and the light transmission effect is good. The tongue part on the substrate carries the LED unit. The three sides of the tongue part are light transmission holes. The heat can only be transmitted to the frame part through the connection part and cannot be accumulated. Around the LED unit, the heat dissipation area of the LED unit depends on the size of the frame portion and has nothing to do with the size of the light transmission hole. The light source of the invention not only emits light evenly, but also has good heat dissipation effect and is beneficial to production.

Description

A strip-shaped light source emitting around the surface

technical field

The invention relates to LED lighting technology, in particular to a strip-shaped light source emitting light on the surrounding surface.

Background technique

A low-carbon, green, energy-saving and environmentally-friendly lifestyle has become the goal that people pursue and practice, and replacing traditional incandescent and fluorescent lamps with LED lighting is becoming the mainstream. With years of development. LED lighting technology has emerged a combination of LED units to make a strip wick, and with a light-transmitting bulb, to make a light source that resembles an incandescent lamp, called an LED filament lamp.

The illuminant of the LED filament lamp is a strip-shaped wick, and the wick is composed of a plurality of LED units, a substrate, and a package. In order to facilitate production, the LED units are mostly arranged on the same side of the substrate, the light cannot reach the back of the LED unit, and the light emitted by the manufactured LED wick is very uneven. In order to solve this problem, some people set up light-transmitting holes on the substrate to realize the effect of luminescence around the wick.

The actual light source of the LED unit is the internal LED chip (that is, a light-emitting semiconductor). The heat generated by the LED chip is very high. It needs to be taken away by the heat sink connected to the LED chip and the substrate. When the substrate is opened with a light-transmitting hole, Although the light can reach the back of the LED unit through the light-transmitting hole, it inevitably reduces the area of the substrate and reduces the heat dissipation effect. Therefore, in order to take into account the heat dissipation effect of the substrate, the light transmission hole on the substrate should not be too large.

In view of this, the present invention proposes a strip-shaped light source that emits light around the surface to solve the problem of the conflict between the size of the light-transmitting hole and the heat dissipation effect.

Contents of the invention

The purpose of the present invention is to provide a strip-shaped light source that emits light on the peripheral surface, which not only emits light uniformly on the peripheral surface, but also has good heat generated by the LED unit, and is convenient for production.

In order to achieve the above object of the present invention, the present invention provides two sets of technical solutions, respectively as follows.

The first technical scheme of the present invention is as follows.

A strip-shaped light source emitting light on the surrounding surface, which is composed of an LED unit, a substrate and a package body. A circuit loop is formed between the LED units or between the LED unit and the substrate, which can drive the LED unit to emit light. It is characterized in that: the LED unit There is a radiator, the substrate is a metal sheet; there is a light-transmitting hole on the substrate, and the light-transmitting hole divides the substrate into a frame part and a tongue part; the axis of the frame part and the The axis of the tongue part forms an included angle, the heat sink of the LED unit is connected to the tongue part, the first side, the second side and the third side of the LED unit are surrounded by light-transmitting holes; the package wraps the LED The unit and the substrate have fluorescent materials in the package, which can scatter the point light emitted by the LED unit to the surroundings and emit it from the back of the LED unit through the light-transmitting hole.

In some embodiments, the axis of the LED unit and the axis of the substrate form an included angle of 30 degrees to 90 degrees.

In some embodiments, an angle of 45 degrees is formed between the axis of the LED unit and the axis of the substrate.

In some embodiments, the material of the substrate is a copper-based material or an aluminum-based material, further including a silver-plated copper material.

The second technical solution of the present invention is as follows.

A strip-shaped light source emitting light on the surrounding surface, which is composed of an LED unit, a substrate and a package, and a circuit loop is formed between the LED units or between the LED unit and the substrate, which can drive the LED unit to emit light, and is characterized in that: the substrate It is a metal sheet and consists of a main body and a branch. The branch is connected to the main body and extends outward from the main body; the direction in which the branch extends outward from the main body is the axial direction of the branch, and the major dimension direction of the main body is The axial direction of the main body; an angle greater than 0 degrees and less than or equal to 90 degrees is formed between the axial direction of the branch and the axial direction of the main body; the LED unit has a radiator, and the radiator and the The branch connection of the substrate; the package body wraps the LED unit and the substrate, and the package body has a fluorescent material, which can scatter the point light emitted by the LED unit to the surroundings and pass through the gap between the branches by the LED The back of the unit emits out.

In some embodiments, two parallel arrays of substrates form a pair of substrate groups in which the branches of a substrate are embedded in the spaces between the branches of another substrate.

In some embodiments, the package encloses multiple groups of chips.

In some embodiments, the side-by-side substrates are connected by a connecting piece, and the connecting piece includes a socket piece or a glue piece or a riveting piece or a welding piece or a threaded piece.

In some embodiments, the material of the substrate is a copper-based material or an aluminum-based material, further including a silver-plated copper material.

In some embodiments, the angle formed between the axial direction of the branch and the axial direction of the main body is 30 degrees or 45 degrees or 60 degrees or 75 degrees.

The beneficial effects of the present invention include that, compared with the prior art, in the first set of technical solutions of the present invention, the first side, the second side and the third side of the LED unit are surrounded by light-transmitting holes, and the light transmittance is much higher. It is higher than the solution in the prior art that only provides light-transmitting holes between the LED units. The light transmission hole of the first technical solution of the present invention divides the substrate into a frame part and a tongue part. The three sides of the tongue part are light transmission holes, and only one side is not connected to the frame to form a connection part. It can be conducted to the frame part through the connection part, and will not accumulate around the LED unit. The area of heat dissipation depends on the area of the frame part. Increasing the area of the frame part will not lead to a decrease in the area of the light-transmitting hole, which eliminates the problem of the prior art. contradiction. Moreover, by changing the angle between the tongue part and the frame part, the size of the connecting part can be changed to meet different heat dissipation requirements.

Compared with the prior art, the second set of technical solutions of the present invention not only has the beneficial effects of the first set of technical solutions of the present invention, but also can adjust the position of each substrate in the combination of substrates by combining different substrate groups. A variety of light-transmitting gaps can be obtained, and LED units that can adapt to a variety of luminous luminances are obtained, which facilitates the production of strip light sources (wicks) of various specifications, and ensures uniformity of luminous light on the surrounding surface.

Description of drawings

Fig. 1 is a three-dimensional schematic diagram of Embodiment 1 of the first set of solutions of the present invention;

Fig. 2 is a top view of Embodiment 1 of the first solution of the present invention;

Fig. 3a is the first branch extension diagram of Embodiment 1 of the second solution of the present invention;

Fig. 3b is a second branch extension diagram of Embodiment 1 of the second solution of the present invention;

Fig. 3c is a third branch extension diagram of Embodiment 1 of the second solution of the present invention;

Fig. 4 is a schematic diagram of angle transformation of the second set of schemes of the present invention;

Fig. 5 is a top view of Embodiment 2 of the second set of solutions of the present invention;

Fig. 6 is a top view of Embodiment 3 of the second set of solutions of the present invention;

Fig. 7a is a perspective view of a combination of Embodiment 4 of the second set of solutions of the present invention;

Fig. 7b is a perspective view of another combination of Embodiment 4 of the second set of solutions of the present invention;

Fig. 7c is a perspective view of another combination of Embodiment 4 of the second solution of the present invention.

Detailed ways

The first plan

Embodiment one

As shown in Fig. 1 and Fig. 2, a strip-shaped light source emitting light around the surface of this embodiment is composed of LED units 100, a substrate 200 and a package body 300, and a series circuit circuit is formed between the LED units 100 through wires 400, The circuit loop drives each LED unit 100 to emit light. In some embodiments, the substrate 200 may also be a part of a circuit loop, and the circuit loop is not limited to a series connection, and may be any form in the prior art.

The LED unit 100 of this embodiment has a light-emitting semiconductor, electrodes and a heat sink, which belongs to the existing structure. The heat sink is connected to the light-emitting semiconductor and is located at the bottom of the LED unit 100 . In some embodiments, the substrate 200 is made of a copper-based or aluminum-based material, and in this embodiment the substrate 200 is made of a copper-plated silver material. In this embodiment, the substrate 200 has a light transmission hole 201, and the light transmission hole 201 divides the substrate 200 into a frame part 202 and a tongue part 203. The radiator of the LED unit 100 is connected to the tongue part 203, and the tongue part 203 Heat is conducted to the frame portion 202 . The axis 204 of the frame part 202 and the axis 206 of the tongue part 203 form an included angle A; in some embodiments, the included angle A is between 30° and 90°; different sizes of the included angle A will affect the angle A of the tongue part 203 The size of the connecting portion 207 with the frame 202 can meet the heat dissipation requirements by selecting the size of the included angle A according to different heat dissipation requirements. The included angle A in this embodiment is 45° (degrees).

In this embodiment, the first side 101 , the second side 102 and the third side 103 of the LED unit 100 are all surrounded by the light-transmitting hole 201 . The package body 300 covers the LED unit 100 and the substrate 200 , and the package body 300 has a conventional fluorescent material structure. For ease of understanding, illustrations of the fluorescent material are omitted in FIGS. 1 and 2 . The fluorescent material can scatter the point light emitted by the LED unit 100 to the surroundings, and some of the light scattered to the surroundings will turn back to the substrate, and can penetrate the light-transmitting hole 201 to reach the back of the LED unit, so that the strip-shaped light of this embodiment Light is emitted from the periphery of the light source.

The light transmission hole 201 of the strip-shaped light source emitting light on the peripheral surface of this embodiment surrounds the first side 101, the second side 102 and the third side 103 of the LED unit 100, which increases the probability of the light being bent to the light transmission hole 201 and transmits out The light is more uniform. The heat of each tongue piece 203 is concentrated to the frame part 202 through the connection part 207, so that the heat can leave the LED unit 100 quickly, and at the same time, the light-transmitting hole 201 connects the three sides of the LED unit 100 (the first side 101, the second side 102, the second side 100). Surrounded by three sides 103), the heat cannot surround the three sides, and the periphery of the LED unit 100 is a non-heated light-transmitting hole 201 instead of a substrate 200 with heat. The operating temperature and current of the LED unit 100 in this embodiment Compared with existing technologies, it can be effectively reduced. Through the description of this embodiment, the present invention only needs to adjust the size of the included angle A to adapt to LED units with different heat dissipation requirements, that is, to adapt to LED units with different powers, and to meet various specification requirements.

Second set of plans

Embodiment one

As shown in Fig. 3a, Fig. 3b, and Fig. 3c, a strip-shaped light source emitting around the surface of this embodiment is composed of LED units 100, substrates 200 and packages 300, and the LED units 100 are connected in series through wires 400. A circuit loop, the circuit loop drives each LED unit 100 to emit light. In some embodiments, the substrate 200 can also be a part of the circuit loop, and the circuit loop is not limited to the series form, and can be any form of the prior art; it can be said that the circuit itself does not belong to the gist of the present invention, so In the accompanying drawings, except for Fig. 3a which illustrates a common circuit loop form, the illustration of the circuit loop is omitted in other drawings.

The substrate 200 in this embodiment is made of metal materials, including copper-based materials and aluminum-based materials, preferably silver-plated copper materials. The substrate 200 is composed of a main body 500 and branches 502, and the branches 502 are connected to the main body 500 and extend outward. The direction in which the branch 502 extends outward is the axial direction 503 of the branch 502; the direction of the largest dimension of the main body 500 is the axial direction 501 of the main body 500, and the angle between the branch axial direction 503 and the main body axis 501 is greater than 0 degrees and less than or equal to 90 degrees. angle B in degrees.

The LED unit 100 of this embodiment has a light-emitting semiconductor, an electrode and a heat sink, which belongs to the existing structure. The heat sink is connected to the light-emitting semiconductor and is located at the bottom of the LED unit 100; the LED unit 100 is connected to the branch 502 through the heat sink, and the heat is quickly conducted to the main body. 500 on.

The package body 300 of this embodiment covers the LED unit 100 and the substrate 200. The package body 300 has a fluorescent material inside, which belongs to the existing structure. For ease of understanding, the fluorescent material is omitted in the drawings. The fluorescent material can scatter the point light emitted by the LED unit 100 to the surroundings, and part of the light scattered to the surroundings will turn back to the substrate and be emitted from the back of the LED unit through the gap between the branches 502, so that the light of this embodiment The peripheral surface of the strip light source can emit light.

As shown in Figure 4, the included angle B is preferably 30° or 45° or 60° or 75°. When the included angle B is 75°, the connecting portion 505 between the branch 502 and the main body 500 is smaller than the connecting portion 504 when the included angle B is 30°. The large connection part is suitable for LED units that generate a lot of heat, and the small connection part is suitable for LED units with relatively small heat generation; in this embodiment, the size of the connection part can be controlled by adjusting the size of the included angle B to meet different heat dissipation requirements. Demand, suitable for LED units of various powers.

Embodiment two

As shown in FIG. 5 , the substrate a and the substrate b are arranged in parallel, and both the substrate a and the substrate b are integrally covered by the package body. The illustration of the package body and the fluorescent material in the package body is omitted in FIG. 5 . The branches of substrate a are embedded in the gaps between the branches of substrate b, and the branches of substrate b are embedded in the gaps between the branches of substrate a, forming a pair of substrate groups. Each branch in the substrate group It constitutes a structure similar to the light transmission hole 201 in the first solution of the present invention.

In the prior art and the first set of technical solutions of the present invention, it is necessary to ensure that the light emitted by the strip light source composed of LED units with different brightness tends to be consistent whether it is on the front of the LED unit or on the back of the LED unit. It is necessary to use different sizes of light-transmitting holes and packages (fluorescent layers) of different thicknesses for LED units with different brightness.

Compared with the prior art and the first technical solution of the present invention, the substrate group composed of the second technical solution of the present invention can adjust the position of the substrate up and down or left and right through the method shown in Figure 5 , to adjust the size of the space between the branches to obtain different sizes of light-transmitting gaps, so as to adapt to the occasions of LED units with different packaging thicknesses or different luminances. This set of technical solutions can easily meet the requirements of various specifications.

Embodiment three

As an extension of this set of technical solutions, multiple substrate groups can be wrapped in the packaging body. As shown in Fig. 6, the substrate c, the substrate e, and the substrate d are arranged in parallel to form two pairs of substrate groups; the strip connector d connects them as a whole through adhesive bonding. In some embodiments, the connecting piece d can be replaced by a socket piece, an adhesive piece, a riveting piece, a welding piece, or a threaded piece.

In example 6, by adjusting the substrate c, substrate d, and substrate e to different positions, the size of the gap between each branch can be adjusted to meet the requirements of different luminous brightness and package thickness.

Embodiment four

As shown in Figure 7a, Figure 7b, and Figure 7c, through the elaboration of the foregoing embodiments, it is illustrated that the present invention can be combined into various implementations by selecting different sizes of included angles B and adjusting the size of the light-transmitting gap in the substrate group to adapt to Different heat dissipation requirements and different light transmission requirements. In Fig. 7a, the included angle B is 45° and combined with the substrates of Fig. 3a and Fig. 3b to form a substrate group; in Fig. 7b, the included angle B is 75° and combined with the substrates of Fig. 3a and Fig. 3b to form a substrate Group; in Fig. 7c, the included angle B is 45° and the substrates in Fig. 3a and Fig. 3c are combined to form a substrate group.

The above-mentioned embodiments are only examples for facilitating understanding of the present invention, and are not intended to limit the present invention. Modifications and substitutions made by those skilled in the art on the basis of the above embodiments do not depart from the protection scope of the present invention. The protection scope of the present invention shall be determined by the claims.

Claims (10)

1. the strip-shaped light source of a side face luminescence, be made up of LED unit, substrate and packaging body, forming circuit loop between LED unit or between LED unit and substrate, can driving LED unit luminous, it is characterized in that: described LED unit has radiator, described substrate is a kind of sheet metal; Described substrate has a loophole, substrate is divided into frame section and tongue piece portion by described loophole; The axis of the axis of described frame section and described tongue piece portion forms angle, and the radiator of described LED unit connects described tongue piece portion, the first side of LED unit and the second side and the 3rd side by loophole around; Described packaging body coats LED unit and substrate, have fluorescent material in described packaging body, and the some light scattering that LED unit can be sent is to surrounding and go out through the back side emitter of loophole by LED unit.

2. the strip-shaped light source of a kind of side face luminescence as claimed in claim 1, is characterized in that: the angle forming 30 degree ~ 90 degree between the axis of LED unit and substrate axis.

3. the strip-shaped light source of a kind of side face luminescence as claimed in claim 2, is characterized in that: the angle forming 45 degree between the axis of LED unit and substrate axis.

4. the strip-shaped light source of a kind of side face luminescence as claimed in claim 1, is characterized in that: the material of described substrate is copper-based material or alumina-base material.

5. the strip-shaped light source of a side face luminescence, be made up of LED unit, substrate and packaging body, forming circuit loop between LED unit or between LED unit and substrate, energy driving LED unit is luminous, it is characterized in that: described substrate is sheet metal and is made up of main body and branch, and described branch connects described main body and stretched out by main body; Described branch is the axis of described branch by the outward extending direction of main body, and the large scale direction of described main body is the axis of described main body; Form one between the axis of described branch and the axial direction of described main body be greater than 0 degree and be less than or equal to the angle of 90 degree; Described LED unit has radiator, and described radiator is connected with the branch of described substrate; Described packaging body coats LED unit and substrate, have fluorescent material in described packaging body, and the some light scattering that LED unit can be sent is to surrounding and go out through the back side emitter of the space between described branch by LED unit.

6. the strip-shaped light source of a kind of side face luminescence as claimed in claim 5, is characterized in that: the substrate of two parallel arranged partners substrate group, and in described substrate group, the branch of substrate embeds in the space between another substrate branch.

7. the strip-shaped light source of a kind of side face luminescence as claimed in claim 6, rises and is characterised in that: the multiple substrate group of packaging body coats.

8. the strip-shaped light source of a kind of side face luminescence as claimed in claim 7, is characterized in that: connect with connector between substrate, and connector comprises Coupling or cementing or riveting parts or weldment or threaded connector.

9. the strip-shaped light source of a kind of side face luminescence according to any one of claim 5 to 7, is characterized in that: the material of described substrate is copper-based material or alumina-base material.

10. the strip-shaped light source of a kind of side face luminescence as claimed in claim 5, is characterized in that: the angle formed between the axis of described branch and the axial direction of described main body is 30 degree or 45 degree or 60 degree or 75 degree.