Automotive LED headlamp capable of achieving overall and rapid radiating and radiating method

A heat dissipation method and headlight technology, which is applied in the field of car lights, can solve the problems of high failure rate of cooling fans, high production costs, and difficult heat generation, so as to ensure normal operation and service life, solve sealing problems, and improve heat dissipation effect Effect

Active Publication Date: 2016-05-11
CHANGZHOU TONGBAO PHOTOELECTRIC MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of LED heat dissipation, the existing technology is to install a large metal heat dissipation frame in the sealed housing of the car light, and then use a fan to force heat dissipation, which has a complex structure, high price, large volume, and difficult sealing of the car light. Solution: The overall airtightness requirements of the car lights are relatively high, and fans are used for forced heat dissipation, so the heat is not easy to pass out from the lights, resulting in unsatisfactory heat dissipation
[0004] In addition, compared with LEDs, the failure rate of cooling fans is high. Once the fan fails, the working temperature of LEDs will rise rapidly, which will accelerate the aging and failure of LEDs; at the same time, in order to improve the heat absorption effect, the metal cooling frame used is relatively large. , heavy weight, resulting in high production costs

Method used

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  • Automotive LED headlamp capable of achieving overall and rapid radiating and radiating method
  • Automotive LED headlamp capable of achieving overall and rapid radiating and radiating method
  • Automotive LED headlamp capable of achieving overall and rapid radiating and radiating method

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Experimental program
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Effect test

Embodiment 1

[0029] See Figures 1 to 2 ,or Figure 3-7 , the rapid heat dissipation LED headlamp for vehicle of the present embodiment comprises: a heat conduction housing 1, a transparent cover 2 sealed and arranged on the front side of the housing 1, the housing 1 and the transparent cover 2 form a sealed cavity, and The sealed cavity is provided with an LED assembly and a metal cooling frame 4, the LED assembly 3 is arranged on the metal cooling frame 4, and the rear end, and / or bottom, and / or top of the metal cooling frame 4 extends out of the housing 1, The metal cooling frame 4 is tightly fitted with the housing 1 .

[0030] The metal cooling frame includes: a front panel for setting the LED assembly 3, and the cooling fins 4-1 connected to the rear side of the front panel; each cooling fin 4-1 passes through the housing 1, and The middle part of each cooling fin 4-1 is injection molded together with the housing 1 at one time.

[0031] When the vehicle headlight is installed on t...

Embodiment 2

[0039] The production method of the above-mentioned LED headlights for vehicles includes: fixing the metal heat dissipation frame 4 in the mold, extending the part of the housing 1 required by each heat dissipation fin 4-1, and adopting a mold with a melting point higher than the injection molding temperature. The material or sheet fills the gaps between adjacent heat dissipation fins 4-1, and then performs mold clamping, filling, pressure maintaining, cooling and demoulding in sequence to remove the material or sheet.

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Abstract

The invention relates to an automotive LED headlamp capable of achieving overall and rapid radiating. The automotive LED headlamp comprises a thermal conductive plastic shell and a metal radiating support, the metal radiating support extends out of the shell and forms radiating fins, and the metal radiating support and the shell are in sealing fit. The part, extending out of the shell, of the metal radiating support is multiple radiating fins alternately distributed in parallel so that heat in the automobile headlamp can be rapidly output to the exterior of the shell of the automobile headlamp through the radiating fins, and airflow generated in the automotive travelling process can conduct radiating on the radiating fins extending out of the shell. In addition, the heat on the metal radiating support is transmitted to the shell through a combination part of the metal radiating support and the shell, and heat is radiated overall and rapidly through the shell; and meanwhile, in the automobile travelling process, the generated airflow conducts rapid air cooling on the overall shell.

Description

technical field [0001] The invention relates to a vehicle lamp, in particular to an LED headlamp for a motor vehicle such as a car and a heat dissipation method. Background technique [0002] The existing domestic motor vehicle lights such as cars have begun to use LED as the light source. LED has the advantages of high light efficiency, long life, energy saving and environmental protection, but the current photoelectric conversion efficiency of LED is only 15%, and the remaining 85% is converted into heat energy. . [0003] In order to solve the problem of LED heat dissipation, the existing technology is to install a large metal heat dissipation frame in the sealed housing of the car light, and then use a fan to force heat dissipation. The structure is complex, expensive, large in size, and difficult to seal the car light. Solution: The overall airtightness of the car lamp is high, and the fan is used for forced heat dissipation, so the heat is not easy to be transmitted f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/10F21V29/89F21V29/76F21V29/507F21V29/77F21V31/03B29C45/14F21W101/10F21Y101/02
CPCB29C45/14336B29L2031/3002
Inventor 刘威陈文祥王波陈曹杰
Owner CHANGZHOU TONGBAO PHOTOELECTRIC MFG CO LTD
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