CN101220944A

CN101220944A - Heat pipe radiation of high power LED automobile lamp

Info

Publication number: CN101220944A
Application number: CNA2007101505554A
Authority: CN
Inventors: 牛萍娟; 田海涛; 杨广华; 高铁成; 王彩凤; 毛博年
Original assignee: TIANJIN HAIBO OPTOELECTRONICS TECHNOLOGY Co Ltd
Current assignee: TIANJIN HAIBO OPTOELECTRONICS TECHNOLOGY Co Ltd
Priority date: 2007-11-29
Filing date: 2007-11-29
Publication date: 2008-07-16

Abstract

The invention belongs to a power-type LED heat dissipation technique and is used in the field of car light, which relates to a heat dissipation structure of a power-type LED car light heat pipe. The invention includes the design of a heat pipe structure, the design of a power-type LED heat dissipation PCB structure and a heat pipe which is matched with the power-type LED. The car light heat pipe heat dissipation structure which is provided by the invention can solve the heat dissipation problem of the power-type LED in the car light application field; good heat dissipation effect can be achieved by the optimized combination of the heat pipe and the power-type LED, thus solving the biggest problem, the heat dissipation problem of LED in the application of car light.

Description

The heat pipe heat radiation of high power LED automobile lamp

Technical field:

The art of this patent relates to the application technology of great power LED in auto lamp, provide a kind of power-type LED auto lamp to utilize the structure of heat pipe heat radiation, solve the heat dissipation problem of power-type LED, have efficient, energy-saving and environmental protection, simple in structure, advantage that cost is low, easy for installation in the automotive lamp applications field.

Background technology:

The white light LEDs semiconductor lighting be after incandescent lamp, fluorescent lamp and rare gas lamp the 4th generation electric light source, because of its high efficiency, long-life, the advantage of energy-saving and environmental protection, having become the target that light source and light fixture research institution are all over the world competitively developed, made great efforts to obtain, is the star industry of following lighting field.Along with the continuous progress of LED manufacturing technology and the exploitation and the application of new material (element nitride crystal and fluorescent material), the LED semiconductor solid-state optical source performance of the coloured light that turns white is constantly improved and entered the practical stage, led light source progressively moves towards auto lamp from special sources such as initial signal lamp, indicator lamps.The LED energy consumption of white light only is 1/8 of an incandescent lamp, 1/2 of fluorescent lamp, and its life-span was 100,000 hours, and illumination is " putting things right once and for all " for average family.Can realize also simultaneously mercurylessly, reclaim easily that this is significant for environmental protection and energy savings.Therefore national governments all vigorously support.LED needs the above power output of watt level as illumination light source, therefore how to improve light extraction efficiency, and solving watt level LED heat dissipation problem is a key of LED illumination.The continuous increase of LED power, the application subject matter that solves LED is exactly heat dissipation problem.The heating problem of most of LED is to solve by fin, and the area of fin is just big more when power is big more, and sometimes even do not satisfy radiating requirements, and the application that power-type LED is led at auto lamp just is subjected to the severely restricts of this condition.This is with regard to eager a kind of good heat dissipation effect that expects to have, and heat abstractor simple in structure occurs.This power-type LED auto lamp heat pipe heat radiation structure that this patent proposes makes that heat pipe and LED are ingenious to be combined, and can effectively solve the problem of power-type LED aspect the auto lamp heat radiation, and simple in structure, easy for installation, has vast market prospect.

Summary of the invention:

The present invention is a kind of heat pipe heat radiation structure of novel power-type LED auto lamp, it is characterized in that, comprising:

1. comprise fixture, the heat pipe outside of reflector (3), aluminium sheet (1) and heat pipe (4) fin (6), be installed in plurality of LEDs (5) in the reflector (3), be fixed on the LED napex integral heat dissipation means, be fixed on the power supply fixture (7) at heat pipe rear portion, the fixture of reflector and aluminium sheet.In one, fin and forming heat pipe are in one by mould molding for described aluminium sheet and reflector.

2. described plurality of LEDs light source is uniformly distributed on the circuit board according to the illumination needs, circuit board closely contacts with its heat abstractor, and links to each other with LED power supply in the supply unit (7), and led light source and radiator structure thereof are positioned at the reflector outside, and separate with reflector, be beneficial to heat radiation.

Description of drawings:

For further specifying the technology contents of this patent, after being described in more detail in below in conjunction with drawings and Examples, wherein:

The perspective view of Fig. 1 power plough LED auto lamp heat pipe heat radiation structure.

The specific embodiment:

Consult Fig. 1 structural representation, power-type LED auto lamp heat pipe heat radiation structure comprises:

1. comprise aluminium sheet (1), this aluminium sheet and heat pipe (4) are welded as a whole, and are convenient to install the LED lamp plate.

2. reflector (3) adopts the import rafifinal stronger through anodized, reflecting effect, and reflector links to each other with aluminium sheet, aluminium sheet and reflector by mould molding in one, the about 150mm of reflector base diameter.

3. the quantity and the power that are installed in the led light source in the reflector can be selected according to the actual illumination demand, present embodiment is selected GaN based high-power white light LEDs, single power is 1w, adopts 5 power outputs that can reach LED to 5W, and adopts printed circuit board to fix.

4. add fin (6) between the heat pipe and can make radiating effect better, heat pipe closely contacts with aluminium sheet, and closely contacts with LED place pcb board, to reach efficiently radiates heat.

5. heat pipe and aluminium sheet (1) are weldingly connected, and help the LED heat radiation.

6. power supply and drive plate fixture are positioned at heat pipe rear portion (7), in LED power supply and binding post are housed.

Claims

1. the present invention is a kind of novel power-type LED auto lamp heat pipe heat radiation structure, it is characterized in that, comprising:

1. comprise, reflector, be installed in plurality of LEDs in the reflector, be fixed on the heat abstractor heat pipe of LED bottom, fixedly heat abstractor support, be fixed on the power supply fixture at reflector top.

2. heat pipe and heat radiation aluminium flake be by being weldingly connected, and adds heat-conducting silicone grease and link to each other fixedly torsion spring connection by screw between pcb board and the aluminium sheet.

3. described plurality of LEDs light source is uniformly distributed on the circuit board according to the illumination needs, circuit board closely contacts with its heat abstractor, and links to each other with LED power supply in the supply unit, and led light source and radiator structure thereof are positioned at the reflector outside, and separate with reflector, be beneficial to heat radiation.