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A kind of led headlight for car which can be forced air cooling when the car is in motion

A technology for headlights and LED components, applied in the direction of headlights, motor vehicles, road vehicles, etc., can solve the problems of high overall sealing requirements, difficult heat, and difficult sealing of headlights, so as to ensure normal work and use. longevity, solving sealing problems, and improving the effect of heat dissipation

Active Publication Date: 2018-06-29
CHANGZHOU TONGBAO PHOTOELECTRIC MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

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
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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  • A kind of led headlight for car which can be forced air cooling when the car is in motion
  • A kind of led headlight for car which can be forced air cooling when the car is in motion
  • A kind of led headlight for car which can be forced air cooling when the car is in motion

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Effect test

Embodiment 1

[0029] See Figures 1 to 2 ,or Figure 3-7 , the vehicle LED headlamp 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 in the sealed cavity An LED assembly and a metal heat dissipation frame 4 are provided, the LED assembly 3 is arranged on the metal heat dissipation frame 4, the rear end, and / or bottom, and / or top of the metal heat dissipation frame 4 extend out of the housing 1, and the metal heat dissipation frame 4 Seal fit 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 the ...

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 conducting forced cooling during automobile motion. The automotive LED headlamp comprises a shell and a transparent cover, a sealing cavity is formed by the shell and the transparent cover, and an LED assembly is arranged at the position, on the front side face of the shell, in the sealing cavity and arranged on a metal radiating support; and the metal radiating support extends out the shell and forms radiating fins, and the metal radiating support and the shell are in sealing fit 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, 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 rapidly radiated overall outwards 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 a vehicle LED headlamp which can be forcedly air-cooled when the vehicle is in motion and which is used 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. . 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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S41/00F21V29/76F21V29/60F21V29/87F21V29/70F21V31/00F21W107/10F21Y115/10
Inventor 刘威王波陈曹杰陈文祥谢建毅朱成于群
Owner CHANGZHOU TONGBAO PHOTOELECTRIC MFG CO LTD
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