WO2012149823A1

WO2012149823A1 - Led light bulb with heat dissipation device

Info

Publication number: WO2012149823A1
Application number: PCT/CN2011/082606
Authority: WO
Inventors: 王冬雷
Original assignee: 广东德豪润达电气股份有限公司
Priority date: 2011-05-05
Filing date: 2011-11-22
Publication date: 2012-11-08
Also published as: CN202092072U

Abstract

An LED light bulb with a heat dissipation device (13), including an LED light source (121), a heat dissipation device (13) and a lamp-socket (14). The heat dissipation device (13) includes a bottom heat dissipation component and a top heat dissipation component, the LED light source (121) is located in an inner cavity surrounded by the bottom heat dissipation component and the top heat dissipation component, the lamp-socket (14) is located on the top of the top heat dissipation component, and the LED light source (121) is attached to the bottom heat dissipation component. A plurality of heat dissipation openings (131, 132, 133, 134) are arranged on both the bottom heat dissipation component and the top heat dissipation component respectively. The LED light bulb effectively utilizes the inner and outer surfaces of the heat device to form a dual channel to dissipate heat, so that the heat generated by the LED light source (121) can be exchanged with the outside promptly.

Description

LED bulb with heat sink

Technical field

The utility model belongs to the technical field of LED illumination, in particular to a field of heat dissipation of a high-power LED bulb, which is specifically an LED bulb with a heat sink. Background technique

With the gradual implementation of national energy conservation and emission reduction policies, the emerging LED lighting industry plays an important role. Green, environmental protection and energy saving have become synonymous with lamp bulbs with LED as the light source. However, in the use of light sources and lamps, the high heat generated by LED work is an important factor that restricts the performance of LEDs. The heat dissipation structure of LED lamps and The heat sink type has become a research topic for many people involved.

In the prior art, a multi-turn LED light source module is combined with a die-casting and extrusion profile to perform heat dissipation processing. This method is effective, but this method makes a large amount of hot air gather inside the lamp, and can not transfer the heat to the outside air very quickly, so that the module of the light source is in a high temperature environment for a long time, which is not conducive to the life of the product. Solving this problem requires increasing the heat dissipation area, but at the same time increasing the weight of the material and the processing technology, so that the weight and cost of the whole lamp are significantly improved; or using the fan, heat pipe and other technologies to improve the heat exchange performance of the product, but still have It may be because the actual requirements of LED bulbs are too small, and it is impossible to mass-produce through the requirements of safety regulations. In addition, from the perspective of cost performance, technologies such as fans and heat pipes are not the most ideal choice. Summary of the invention

The purpose of the utility model is to provide an LED light bulb with a heat dissipating device, which can heat the heat generated by the LED light source to the outside world in time, so that the product cost is lower, the performance is better, and the service life of the product is prolonged.

The utility model is realized by the following technical solutions:

An LED light bulb with a heat sink, comprising an LED light source, a heat sink and a lamp holder; wherein the heat sink comprises a bottom heat dissipating component and a top heat dissipating component, wherein the LED light source is formed by the bottom heat dissipating component and the top heat dissipating component In the inner cavity; the LED light source is in contact with the bottom heat dissipating component; the bottom heat dissipating component and the top heat dissipating component are each provided with a plurality of heat dissipating holes; the lamp socket is located at the top of the top heat dissipating component.

The beneficial effects of the utility model are as follows:

The utility model provides an LED light bulb with a heat dissipating device. The heat is generated by the LED light source, and the heat is discharged through the bottom heat dissipating component and the top heat dissipating component in the heat dissipating device, and the cold air outside the bulb is continuously connected with the heat dissipating device. The outer inner surface is heat exchanged; at the same time, the bottom heat dissipating member and the top heat dissipating member are provided with a plurality of The vent hole forms a reasonable combination of conduction, radiation and air convection. The advantage of the utility model is that the utility model can effectively use the inner and outer surfaces of the heat dissipating device to form a dual-channel heat dissipation mode without increasing the volume of the LED bulb and Effectively solve the heat dissipation problem of high-power LED bulbs under weight, improve the performance of LED bulbs and extend the life of bulbs. DRAWINGS

1 is a schematic structural view of an LED light bulb with a heat sink according to the present invention;

2 is a schematic view of a heat dissipation passage of an LED bulb with a heat dissipation device according to the present invention;

3 is a schematic view of a heat dissipation passage 2 of an LED bulb with a heat sink according to the present invention.

Description of the reference signs:

11. Reflective component, 121, LED light source, 122, thermally conductive dielectric, 13, heat sink, 131, heat sink, 132, second heat sink combination, 133, third heat sink combination, 134, first heat sink combination, 135, heat sink, 136, housing, 14, lamp holder. detailed description

The utility model discloses an LED light bulb with a heat dissipating device, as shown in Figs. 1, 2 and 3, comprising an LED light source 121, a heat dissipating device 13 and a lamp holder 14; wherein the heat dissipating device 13 comprises a bottom heat dissipating device a component and a top heat dissipating component, the LED light source 121 is located in a cavity formed by the bottom heat dissipating component and the top heat dissipating component; the LED light source 121 and the bottom heat dissipating component are attached; the bottom heat dissipating component and the top heat dissipating component are respectively provided with a plurality of heat dissipating components Hole; the socket 14 is located at the top of the top heat sink.

The bottom heat dissipating member is made of a metal plate and is a single or multi-body composite member; the surface is processed with a regular embossing pattern for increasing the heat dissipating area.

The top heat dissipating member is made of an insulating material.

The LED light source 121 uses a stent array structure and includes more than one LED chip.

The bottom heat dissipating component includes a heat conductive insulating medium 122 mounted on the LED light source 121 and a heat sink 135 connected to the heat conductive insulating medium 122. The top heat dissipating component includes a casing 136, and the heat sink 135 and the outer casing 136 are mutually coupled to each other. The internal sealed cavity of the LED bulb.

The LED bulb includes a reflective member 11 located at the bottom.

The edge of the heat sink 135 is provided with a plurality of heat dissipation holes 131 arranged in a circular array.

A plurality of sets of heat dissipation holes are disposed on a sidewall of the outer casing 136, and each of the heat dissipation hole combinations includes a plurality of heat dissipation Hole.

Preferably, the side of the outer casing 136 is provided with three sets of heat dissipation holes: a first heat dissipation hole combination 134, a second heat dissipation hole combination 132 and a third heat dissipation hole combination 133; each set of heat dissipation hole combinations are arranged in a circular array manner Arranged, the three sets of vents are placed on different height planes.

The first louver combination 134 is located at the bottom of the outer casing 136, the second louver combination 132 is located at the upper center of the outer casing 136, and the third louver combination 133 is located at the top of the outer casing 136.

The LED light bulb of the utility model has the bottom heat dissipating component formed by various processing techniques or single or multi-body combination of the metal plate material, which is matched with the LED light source and has a plurality of heat dissipation holes, and the surface is processed with regular concave and convex patterns. In order to increase the heat dissipation area; the top heat dissipating component is made of insulating material and has heat dissipation holes, which form a convection passage at the top and bottom of the heat dissipating device, thereby forming a double channel heat dissipation. One of the channels is a light source module to the outer surface of the heat dissipating device, and a part of the heat is dissipated by conduction, radiation, and air convection; wherein the second channel is the inner surface of the heat dissipating device, and the air is circulated through the top opening of the heat dissipating device and the bottom opening. The cold air enters the bottom opening of the heat sink, and the hot air is discharged from the top vent of the heat sink to form a convection cycle of hot and cold air. Specifically, heat is generated in the LED light source 121 of the bracket array, and passes through the heat conductive insulating medium 122, the heat sink 135 in the heat sink, and the outer casing 136 in the heat sink. In this process, the heat radiation and the air convection start simultaneously. Cooling. The cold air outside the bulb continuously exchanges heat with the outer surface of the heat sink 13, and at the same time, the hot air inside the bulb rises, and the cold air outside the bulb is driven from the bottom opening 131 of the heat sink into the bulb interior, and then from the top of the heat sink. The openings 132 and 133, 134 flow out, thereby allowing the inner surface of the heat sink to participate in heat exchange, thereby increasing the heat exchange rate. The utility model has the advantages that the utility model can effectively utilize the inner and outer surfaces of the heat dissipating device to form double-channel heat dissipation without adding any accessories, effectively solve the heat dissipation of the high-power LED bulb without increasing the volume and weight of the LED bulb, and improve the performance of the LED bulb and Extend the life of the bulb. This kind of heat dissipation method makes the product cost lower and the performance is better, and then the LED bulb enters the ordinary people's home to speed up the pace.

The specific implementations listed above are non-limiting, and various modifications and changes made by those skilled in the art without departing from the scope of the present invention are within the scope of the present invention.

Claims

Rights request

An LED light bulb with a heat dissipating device, comprising: an LED light source (121), a heat dissipating device (13) and a lamp holder (14); wherein the heat dissipating device (13) comprises a bottom heat dissipating component And a top heat dissipating component, the LED light source (121) is located in a cavity formed by the bottom heat dissipating component and the top heat dissipating component; the LED light source (121) is in contact with the bottom heat dissipating component; and the bottom heat dissipating component and the top heat dissipating component are disposed A plurality of louvers; the socket (14) is located at the top of the top heat sink.

2. The LED light bulb with heat sink according to claim 1, wherein: the bottom heat dissipating member is made of a metal plate, which is a single or multi-body combination component; and the surface has a rule for increasing the heat dissipation area. Bump pattern.

3. The LED light bulb with heat sink according to claim 1, wherein: said top heat dissipating member is made of an insulating material.

4. The LED light bulb with heat sink according to claim 1, wherein: the LED light source (121) is configured by a bracket array, and includes more than one LED chip.

The LED light bulb with heat sink according to any one of claims 1 to 4, wherein: the bottom heat dissipating member comprises a thermally conductive insulating medium (122) mounted in contact with the LED light source (121). And a heat sink (135) connected to the thermally conductive insulating medium (122); the top heat dissipating member includes a casing (136), a heat sink

(135) and the outer casing (136) are interlocked to form an inner sealed cavity of the LED bulb.

6. The LED light bulb with heat sink according to claim 5, wherein: the LED bulb comprises a reflective member (11) located at the bottom.

The LED light bulb with heat sink according to claim 5, wherein the edge of the heat sink (135) is provided with a plurality of heat dissipation holes (131) arranged in a circular array.

The LED light bulb with a heat dissipating device according to claim 7, wherein: a plurality of sets of heat dissipation holes are disposed on a sidewall of the outer casing (136), and each of the heat dissipation hole combinations comprises a plurality of heat dissipation holes. hole.

The LED light bulb with heat sink according to claim 8, wherein: the side of the outer casing (136) is provided with three sets of heat dissipation holes: a first heat dissipation hole combination (134), and a second heat dissipation. The hole combination (132) and the third heat dissipation hole combination (133); each group of heat dissipation hole combinations are arranged in a circular array manner, and the three groups of heat dissipation hole combinations are located on different height planes.

10. The LED light bulb with heat sink according to claim 9, wherein: the first heat dissipation hole assembly (134) is located at the bottom of the outer casing (136), and the second heat dissipation hole assembly (132) is located at the outer casing (136). The middle portion is in the upper position, and the third vent combination (133) is located at the top of the outer casing (136).