CN103615674B - Large-angle emission LED lamp - Google Patents

Abstract

A large-angle light-emitting LED lamp includes a bulb shell, a lamp head body, a heat sink and a light source board. The heat sink is arranged on the lamp head body. The light source board is arranged on the top of the heat sink. LED light source, the bulb cover is set on the top of the heat sink to house the light source board, the light source board is made of transparent or translucent material, the heat sink is provided with a light-transmitting part, and the light-transmitting part surrounds the light source The bottom of the LED light source is arranged, a part of the light emitted by the LED light source is irradiated toward the bulb shell, and another part of the light emitted by the LED light source is irradiated toward the light source plate and passes through the light-transmitting part toward the direction of the lamp head body, The heat sink also includes a heat transfer cup, a receiving hole is formed in the middle of the light-transmitting part, and the heat-transfer cup is accommodated in the receiving hole and is thermally connected with the light source board. The thermal expansion coefficient of the heat-transfer cup is similar to that of the light-transmitting part. made of alloy material. The large-angle luminous LED lamp has better luminous effect and heat dissipation effect.

Description

Large angle LED lights

technical field

The invention relates to the field of LED lighting, in particular to a large-angle light-emitting LED lamp.

Background technique

In recent years, the application of LED chips as light sources in the field of indoor lighting has developed rapidly. People are constantly exploring a way to overcome the problem of small LED light distribution angles. The light distribution angle of traditional LED bulbs is generally less than 180 degrees. Due to the solid light-emitting characteristics of LED light sources, it is difficult to emit light at large angles. In order to increase the luminous angle, people try to arrange the light source on the multi-faceted column. For example, the date of authorization announcement is October 31, 2012, and the Chinese invention patent with the patent number 201220060615.X discloses a high-efficiency and large-angle LED bulb. The high-efficiency large-angle LED light bulb includes a base shell, a lamp cap located at the bottom of the base shell, a constant current power supply installed inside the base shell, a cover plate covering the top of the base shell, and a cover plate fixed on the base shell. A cube-shaped heat dissipation column above the cover plate, a light-transmitting cover that accommodates the heat dissipation column and is connected to the base shell, wherein the bottom surface of the heat dissipation column is installed on the cover plate, and the remaining surfaces are uniform A PCB board is pasted, and several LED chips are distributed and welded on each PCB board. The large-angle LED lamp needs to weld the LED chip to the heat dissipation column.

Although this method can increase the brightness of the side of the LED lamp, multiple LED chips need to be welded on each side of the bracket, which makes the manufacturing process of the LED lamp complicated and inconvenient for assembly and production.

Contents of the invention

In view of this, it is necessary to provide a large-angle light-emitting LED lamp with simple structure and easy assembly.

The technical solution adopted in the present invention is: a large-angle light-emitting LED lamp, including a bulb shell, a lamp head body, a heat sink and a light source board, the heat sink is arranged on the lamp head body, and the light source board is arranged on the top of the heat sink. A plurality of LED light sources are arranged at intervals on the light source plate, and the light bulb housing is arranged on the top of the heat sink to house the light source plate. part, the light-transmitting part is arranged around the bottom of the LED light source, a part of the light emitted by the LED light source is irradiated toward the bulb shell, and the other part of the light emitted by the LED light source is irradiated toward the light source board and passes through the light-transmitting part Irradiating towards the direction of the lamp head body, the heat dissipation element also includes a heat transfer cup, the middle part of the light-transmitting part forms a receiving hole, the heat transfer cup is accommodated in the receiving hole and is thermally connected with the light source board, and the heat transfer cup is formed by It is made of an alloy material with a thermal expansion coefficient close to that of the light-transmitting part.

Compared with the prior art, the large-angle light-emitting LED lamp is provided with a transparent light source plate on the top of the heat sink, and a plurality of LED light sources are arranged at intervals on the light source plate, and a light-transmitting part is provided at the bottom of the LED light source, so that a part of the LED light source emits The light is irradiated toward the bulb shell, and another part of the light is irradiated toward the light source plate and passes through the light-transmitting portion toward the direction of the lamp head body, forming large-angle light. Since there is no need to install a bracket, and a plurality of LED light sources are welded on the side of the bracket, the structure is simplified, and the utility model has the advantages of simple structure and convenient assembly.

Description of drawings

Fig. 1 is a three-dimensional exploded view of a large-angle light-emitting LED lamp according to the first embodiment of the present invention.

Fig. 2 is a front view of the large-angle LED lamp according to the first embodiment of the present invention.

Fig. 3 is a sectional view along line A-A of Fig. 2 .

Explanation of reference signs:

100 large angle luminous LED lights 312 storage holes

10 bulb shells 32 heat transfer cups

20 light source board 33 blind holes

21LED light source 40 drivers

30 radiator

311 fins

31 Translucent part 50 Lamp body

detailed description

1 is an exploded perspective view of a large-angle LED lamp 100 according to the first embodiment of the present invention. The large-angle LED lamp 100 includes a bulb housing 10 , a light source board 20 , a heat sink 30 , a driver 40 and a lamp body 50 . The heat sink 30 is arranged above the lamp head body 50, the light source board 20 is arranged on the top of the heat sink 30, a plurality of LED light sources 21 are arranged at intervals on the light source board 20, and the bulb housing 10 is covered on the heat sink 30. The top accommodates the light source board 20 inside. The heat sink 30 is provided with a light-transmitting portion 31 , and the light-transmitting portion 31 is disposed around the bottoms of the LED light sources 21 .

Please refer to FIG. 1 , the heat sink 30 further includes a heat transfer cup 32 , and the heat transfer cup 32 is made of an alloy material having a thermal expansion coefficient similar to that of the transparent portion 31 . A receiving hole 312 is formed in the middle of the transparent portion 31 , and the heat transfer cup 32 is received in the receiving hole 312 and thermally connected with the light source board 20 . The light-transmitting portion 31 includes a plurality of fins 311 arranged at intervals, and each fin 311 is respectively located directly below the LED light sources 21 . These fins 311 and the light-transmitting portion 31 are integrally formed of the same material. The transparent part 31 is injection molded by polycarbonate mixed with glass fiber. The light bulb housing 10 is made of the same material as the light-transmitting portion 31 of the heat sink 30 , and the bulb housing 10 is thermally connected to the heat sink 30 through thermally conductive glue.

Please refer to FIG. 1 , the light source board 20 is made of transparent or translucent material, such as glass or ceramic material. These LED light sources 21 are arranged in a ring shape on the top surface of the light source board 20 and are integrally packaged to form a ring-shaped packaging layer (not shown), and phosphor powder (not shown) is provided on the packaging layer.

Please refer to FIG. 3 , the connection position between the heat sink 30 and the bulb housing 10 and the connection position between the heat sink 30 and the lamp body 50 are provided with blind holes 33 for ventilation up and down. the top and bottom of the edge.

Please refer to FIG. 3 , the driver 40 is accommodated in the inner space formed around the heat transfer cup 32 .

During operation, a part of the light emitted by these LED light sources 21 is irradiated towards the bulb shell 10, and another part of the light is irradiated towards the light source plate 20 and irradiates in the direction of the lamp head body 10 through the light-transmitting part 31, because the light-transmitting part 31 The light transmittance is high, so these LED light sources 21 can make the large-angle light-emitting LED lamp form whole body light. In addition, the cold outside air can exchange heat with the heat emitted by the LED light sources 21 through the blind holes 33 ventilated up and down, and the heat generated by the LED light sources 21 can also be transferred through the fins 311 provided on the light-transmitting portion 31 to the bulb housing 10, and then emitted to the external space by the bulb housing 10.

To sum up, the large-angle light-emitting LED lamp 100 is provided with a transparent light source plate 20 on the top of the heat sink 30 and a light-transmitting portion 31 at the bottom of the LED light sources 21, so that a part of the light emitted by these LED light sources 21 is directed toward the bulb The shell 10 irradiates, and another part of the light irradiates toward the light source plate 20 and passes through the light-transmitting portion 31 toward the direction of the lamp head body 10. Since the light source plate 20 is made of transparent or translucent materials, and the light-transmitting portion 31 has high light transmittance, so these LED light sources 21 can make the large-angle light emitting LED lamp 100 form a whole-body light emission. In terms of heat dissipation, the large-angle luminescent LED lamp 100 is provided with a heat transfer cup 32 on the heat sink 30 and a plurality of fins 311 on the light-transmitting part 31, and there are holes on the top and bottom of these fins 311. Blind holes 33 for ventilation up and down, so that the heat generated by these LED light sources 21 can not only be dissipated to the outside air through the heat sink 30, but also can conduct heat exchange with the outside cold air through these blind holes 33, so that the large-angle light-emitting LED The lamp 100 has better heat dissipation effect. In addition, the fins 311 on the heat sink 30 of the large-angle light-emitting LED lamp 100 are built in the heat sink 30, and the driver 40 is cleverly accommodated in the inner space of the heat transfer cup 32, so that the large-angle light The LED lamp 100 has a compact structure, and has the same shape as an incandescent lamp, and at the same time has a good luminous effect and heat dissipation effect, and the implementation of this large-angle lighting does not need to weld multiple LED light sources on the side of the bracket, so the process is simple. , The advantage of being easy to manufacture.

Claims (6)

1. A large-angle light-emitting LED lamp, comprising a bulb shell, a lamp head body, a heat sink and a light source board, the heat sink is arranged on the lamp head body, the light source board is arranged on the top of the heat sink, and the light source board is arranged at intervals A plurality of LED light sources are provided, and the light bulb housing is arranged on the top of the heat sink to house the light source board. It is characterized in that the light source board is made of transparent or translucent material, and the heat sink is provided with a light-transmitting part, the light-transmitting part is arranged around the bottom of the LED light source, a part of the light emitted by the LED light source is irradiated toward the bulb shell, and the other part of the light emitted by the LED light source is irradiated toward the light source board and passes through the light-transmitting part Irradiating towards the direction of the lamp head body, the heat dissipation element also includes a heat transfer cup, the middle part of the light-transmitting part forms a receiving hole, the heat transfer cup is accommodated in the receiving hole and is thermally connected with the light source board, and the heat transfer cup is formed by It is made of an alloy material with a thermal expansion coefficient close to that of the light-transmitting part. 2. The large-angle LED lamp according to claim 1, characterized in that: the light source board is made of glass or ceramic material. 3. The large-angle LED lamp according to claim 1, characterized in that: the light-transmitting part of the heat sink is injection-molded by polycarbonate mixed with glass fiber. 4. The large-angle LED lamp according to claim 1, wherein the light-transmitting portion comprises a plurality of fins arranged at intervals, and each fin is respectively located directly below the LED light source. 5. The large-angle light-emitting LED lamp according to claim 1, characterized in that: the LED light sources are arranged in a ring shape on the top surface of the light source board and are integrally packaged to form a ring-shaped packaging layer, and the packaging layer is provided with Phosphor. 6 . The large-angle LED lamp according to claim 1 , wherein the material of the bulb shell is the same as that of the light-transmitting part of the heat sink, and the bulb shell is thermally connected to the heat sink. 7 .