CN205896749U - Full -angle light -emitting LED bulb lamp - Google Patents

Abstract

The utility model relates to a full -angle light -emitting LED bulb lamp. It is including lamp holder seat and bulb shell, the illuminating source that is equipped with in the bulb shell, and its characterized in that: the illuminating source including the base plate with small -size packaging body at the substrate surface distributes, be equipped with on the base plate a plurality of can with welding of small -size packaging body and the connecting circuit that makes each small -size packaging body interconnect switch on, small -size packaging body including face down chip, the last welding electrode that is equipped with of face down chip, face down chip's surface and remove that welding electrode corresponded coat and be provided with fluorescent gel. Therefore, the utility model has the advantages of easy heat dissipation need not bonding wire point and glues, and 360 is complete luminous, adjustable color temperature.

Description

An all-angle LED bulb light

technical field

The utility model relates to a bulb lamp, in particular to an LED bulb lamp emitting light from all angles.

Background technique

The LED light source is a light source in which light-emitting diodes are used as illuminants. LED light sources have the advantages of high efficiency and long life, and their life is much longer than that of ordinary incandescent lamps. As the country implements energy-saving and emission-reduction policies, the development of the energy-saving and environmentally-friendly LED industry is accelerating, and LED lighting is used in more and more places in life and production. A current LED light source that replaces incandescent lamps is a filament lamp. The light source of an LED filament lamp is composed of multiple LED filaments arranged crosswise in a bulb. Currently, the LED filament mainly adopts the front-mount chip process, and the whole process requires a series of processes such as die bonding, wire bonding, front and back dispensing, and baking. The thermal conductivity of the die-bonding adhesive is not ideal, the yield rate of the bonding wire is low, and the dispensing consistency is poor. During the bulb assembly process, it is easy to cause a series of problems such as filament breakage and gold wire breakage. The overall yield rate is low, which needs to be solved. The problem. Each LED filament has its own color temperature determined during production, and the color temperature cannot be adjusted in real time when forming a bulb. Even if LED filaments with different color temperatures are combined in the same bulb, it is difficult to achieve good light mixing.

Contents of the invention

The utility model provides a full-angle light-emitting LED bulb lamp with a plurality of interconnected small packages welded on the substrate; it solves the problem of poor thermal conductivity, low welding yield and consistent dispensing in the existing LED filament lamps. Problems such as poor performance, complex process, and non-adjustable color temperature.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: a full-angle light-emitting LED bulb lamp, including a lamp holder and a bulb shell, and a light-emitting light source provided in the bulb shell, which is characterized in that: The light-emitting light source includes a substrate and small packages distributed on the surface of the substrate. The substrate is provided with a number of connecting circuits that can be welded with the small packages and make the small packages connected to each other. The small packages include There are flip-chips, welding electrodes are arranged on the flip-chips, and fluorescent colloid is coated on the surface of the flip-chips except the surface corresponding to the welding electrodes. The light source includes a substrate and a small package distributed on the surface of the substrate. The small package includes a flip chip, and the flip chip is provided with a welding electrode. The welding electrode can be directly eutectically welded to the circuit on the substrate without welding wires. The thermal conductivity is much higher than that of die-bonding adhesive, which can provide good heat dissipation for the chip. The small packages are directly connected to the lines on the substrate through the electrodes, without welding wires, the process is simple, and the reliability is high. The surface of the flip chip is coated with fluorescent colloid except for the surface corresponding to the welding electrode. It does not need to be covered with glue on the front and back sides. The process is simple, and the color of the phosphor powder of each small package can be freely adjusted according to the application requirements, which is convenient. Adjust color temperature or finger display. The small package has a large luminous angle, concentrated arrangement, uniform light spot, and no dark area. Therefore, the utility model has the advantages of easy heat dissipation, no need for welding wire dispensing, full 360° light emission, and adjustable color temperature.

The package body is cut after molding or compression molding, the thickness of the phosphor colloid around the flip chip is uniform, and the phosphor powder is also uniformly dispersed in the colloid. In terms of technology, the consistency of the light spot and color temperature of the small package is guaranteed; the characteristics of its five-sided light emission also ensure that it is easy to achieve large-angle light emission and good light mixing effect, and the device has good light spot consistency. And only coating the phosphor colloid around the chip can greatly reduce the consumption of materials and reduce the cost.

Preferably, the small package includes two types: the first small package and the second small package, the fluorescent colloid in the first small package contains high color temperature phosphor, and the fluorescent gel in the second small package The colloid contains low color temperature fluorescent powder, and the first small package body and the second small package body are respectively independently controlled to emit light. A first small package containing high color temperature phosphor and a second small package containing low color temperature phosphor are welded on the substrate, and the first small package and the second small package work independently to emit light with different color temperatures , The lights of two color temperatures can be mixed and matched to obtain the required color temperature requirements, and the change of the overall color temperature can be controlled by adjusting the current, so that the color temperature can be adjusted.

Preferably, the positions of the first small packages and the second small packages on the substrate are distributed in a staggered manner. It makes it easier to mix the mixed light evenly.

Preferably, the small package includes two types: the third small package and the fourth small package, the fluorescent colloid in the third small package only contains green phosphor, and the phosphor in the fourth small package The colloid contains only red phosphor. A product solution with high CRI and high light efficiency can be achieved through the reasonable mixing of two colors of light.

Preferably, the positions of the third small packages and the fourth small packages on the substrate are distributed in a staggered manner. It makes it easier to mix the mixed light evenly.

Preferably, small packages are provided on the upper and lower surfaces of the substrate. Both the upper and lower surfaces of the substrate are provided with small packages, so that 360° full illumination of the light source can be realized.

Preferably, the base plate and the lamp holder are arranged coaxially. The base plate and the lamp base are coaxially arranged, so that the light generated on the base plate can pass through the bulb shell at an approximately vertical angle, which can reduce light loss and avoid refraction, so that the lighting effect is better.

Preferably, the bulb shell is filled with an inert gas for heat conduction. The bulb shell is filled with inert gas for heat conduction, which helps to dissipate internal heat and enhance heat dissipation.

Preferably, the substrate has a symmetrical shape. The substrate is a symmetrical shape. The substrate is specifically a circle or a regular polygon. It can also be a ring or a segment of a ring or a similar structure. The light generated by the light source of these structures is uniform and symmetrical, and the light spot effect is good.

Therefore, the utility model has the following characteristics compared with the prior art: 1. The luminescent light source includes a substrate and a small package body distributed on the surface of the substrate, the small package body includes a flip chip, and the flip chip is provided with welding electrodes. The electrodes can be directly eutectically welded to the circuit on the substrate without welding wires, and the heat dissipation performance is good; 2. The small packages are directly connected to the lines on the substrate through the electrodes, without welding wires, the process is simple and the reliability is high; 3 .The surface of the flip chip is coated with fluorescent colloid except for the surface corresponding to the welding electrode, so there is no need for subsequent dispensing process, and the color of the phosphor powder of each small package can be freely adjusted according to the application requirements, which is convenient for adjusting the color temperature or Significant; 4. The small package body has a large luminous angle, the arrangement is relatively concentrated, the light spot is uniform, and there is no dark area.

Description of drawings

Accompanying drawing 1 is the structural representation of embodiment 1 of the present utility model;

Accompanying drawing 2 is the structural representation of the small package body of the present utility model;

Accompanying drawing 3 is the sectional view of the small package of the present utility model;

Accompanying drawing 4 is the structural representation after removing bulb shell of embodiment 1 of the present utility model;

Accompanying drawing 5 is the structural representation of connection circuit;

Accompanying drawing 6 is the structure diagram after removing the bulb shell of embodiment 2 of the present utility model.

detailed description

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment 1: see Fig. 1, Fig. 2, Fig. 3, Fig. 5, a kind of full-angle light-emitting LED bulb lamp, including a lamp base 1 and a bulb shell 2, a light-emitting light source provided in the light-bulb shell 2, a light-emitting light source It includes a substrate 3 and small packages 4 distributed on the surface of the substrate 3. The substrate 3 is provided with a number of connection circuits 31 that can be eutectically welded with the small packages 4 and make the small packages 4 interconnected. The small package 4 includes a flip chip 41 on which a welding electrode 411 is provided, and the surface of the flip chip 41 except the surface corresponding to the welding electrode 411 is coated with fluorescent glue 42 . The luminescent light source includes a substrate and a small package distributed on the surface of the substrate. The small package includes a flip chip, and welding electrodes are arranged on the flip chip. The connecting circuit 31 includes two conductive pads 311, two conductive pads 311 The electric pads 311 are connected by conductive lines 312, and the welding electrodes can be eutectically welded directly to the conductive pads 311 on the substrate without welding wires, and the thermal conductivity is much higher than that of the die-bonding adhesive, which can provide good heat dissipation for the chip. The small packages are directly connected to the lines on the substrate through the electrodes, without welding wires, the process is simple, and the reliability is high. The surface of the flip chip is coated with fluorescent colloid except for the surface corresponding to the welding electrode. It does not need to be covered with glue on the front and back sides. The process is simple, and the color of the phosphor powder of each small package can be freely adjusted according to the application requirements, which is convenient. Adjust color temperature or finger display. The small package has a large luminous angle, concentrated arrangement, uniform light spot, and no dark area. Therefore, the utility model has the advantages of easy heat dissipation, no need for welding wire dispensing, full 360° light emission, and adjustable color temperature.

As shown in Fig. 4, the small package 4 includes two types: a first small package 4a and a second small package 4b, the fluorescent gel 42 in the first small package 4a contains a high color temperature phosphor, and the second small package The fluorescent colloid 42 in 4b contains low color temperature fluorescent powder, and the first small package 4a and the second small package 4b are respectively independently controlled to emit light. A first small package containing high color temperature phosphor and a second small package containing low color temperature phosphor are welded on the substrate, and the first small package and the second small package work independently to emit light with different color temperatures , The lights of two color temperatures can be mixed and matched to obtain the required color temperature requirements, and the change of the overall color temperature can be controlled by adjusting the current, so that the color temperature can be adjusted.

Referring to FIG. 4 , the positions of the first small packages 4 a and the second small packages 4 b on the substrate 3 are distributed in a staggered manner. Each first small package body 4a is located on the same circular ring and is evenly distributed, and each second small package body 4b is located on the same circular ring and is evenly distributed, and the first small package body 4a and the second small package body 4b are respectively arranged on concentric circles. On the two inner and outer rings, and the number of the first small packages 4a and the second small packages 4b is the same, each first small package 4a is located between a pair of adjacent second small packages 4b, The first small package body and the second small package body form a staggered distribution according to the above arrangement, so that the mixed light can be mixed evenly more easily.

As shown in FIG. 1 , the base plate 3 and the lamp base 1 are arranged coaxially. The base plate and the lamp base are coaxially arranged, so that the light generated on the base plate can pass through the bulb shell at an approximately vertical angle, which can reduce light loss and avoid refraction, so that the lighting effect is better. The bulb shell 2 is filled with an inert gas for heat conduction. The bulb shell is filled with inert gas for heat conduction, which helps to dissipate internal heat and enhance heat dissipation.

Referring to FIG. 1 , small packages 4 are provided on the upper and lower surfaces of the substrate 3 . Both the upper and lower surfaces of the substrate are provided with small packages, so that 360° full illumination of the light source can be realized.

Referring to Fig. 4, the substrate 3 has a symmetrical shape. The substrate is specifically a circle or a regular polygon, and may also be a ring or a part of a ring or a similar structure. The light generated by the light source of these structures is uniform and symmetrical, and the light spot effect is good.

Embodiment 2: see Fig. 6, the small package body 4 includes two types of the third small package body 4c and the fourth small package body 4d, the fluorescent colloid 42 in the third small package body 4c only contains green fluorescent powder, and the second small package body 4c contains only green fluorescent powder. The fluorescent colloid 42 in the four small packages 4d only contains red fluorescent powder. A product solution with high CRI and high light efficiency can be achieved through the reasonable mixing of two colors of light.

Referring to FIG. 6 , the positions of the third small packages 4c and the fourth small packages 4d on the substrate 3 are distributed in a staggered manner. It makes it easier to mix the mixed light evenly.

All the other parts are identical with embodiment 1.

It is obvious to those skilled in the art that the present utility model can be changed in many ways, and such changes are not considered to depart from the scope of the present utility model. All such modifications obvious to those skilled in the art are intended to be included within the scope of this claim.

Claims (10)

1. An LED bulb lamp that emits light from all angles, including a lamp base (1) and a bulb case (2), and a light source provided in the light bulb case (2), characterized in that: the light source includes The substrate (3) and the small packages (4) distributed on the surface of the substrate (3), the substrate (3) is provided with several small packages (4) that can be welded and make the small packages (4) connected to each other The connecting circuit (31), the small package (4) includes a flip chip (41), the flip chip (41) is provided with welding electrodes (411), the surface of the flip chip (41) and The surface corresponding to the welding electrode (411) is coated with fluorescent colloid (42). 2. The full-angle LED bulb lamp according to claim 1, characterized in that: the small package (4) includes a first small package (4a) and a second small package (4b) Two types, the fluorescent colloid (42) in the first small package (4a) contains high color temperature phosphor, the fluorescent colloid (42) in the second small package (4b) contains low color temperature phosphor, and the first A small package body (4a) and a second small package body (4b) are provided for independently controlled light emission. 3. The full-angle LED bulb lamp according to claim 2, characterized in that: the positions of the first small package (4a) and the second small package (4b) on the substrate (3) The distribution is staggered. 4. The full-angle light-emitting LED bulb lamp according to claim 1, characterized in that: the small package (4) includes a third small package (4c) and a fourth small package (4d) For the two types, the fluorescent colloid (42) in the third small package (4c) contains only green phosphor, and the fluorescent colloid (42) in the fourth small package (4d) contains only red phosphor. 5. The full-angle LED bulb lamp according to claim 4, characterized in that: the positions of the third small package (4c) and the fourth small package (4d) on the substrate (3) The distribution is staggered. 6. The full-angle LED bulb lamp according to claim 1, characterized in that: the upper and lower surfaces of the substrate (3) are provided with small packages (4). 7. The full-angle LED bulb lamp according to any one of claims 1 to 6, characterized in that: the substrate (3) and the lamp holder (1) are arranged coaxially. 8. The full-angle LED bulb lamp according to claim 1, characterized in that: the bulb shell (2) is filled with an inert gas for heat conduction. 9. The full-angle LED bulb lamp according to claim 1, characterized in that: the substrate (3) has a symmetrical shape. 10. The full-angle LED bulb lamp according to claim 7, characterized in that: the substrate (3) has a symmetrical shape.