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Device for improving active heat dissipation efficiency of light-emitting diode (LED) automobile headlamp by using fan guide hood, and heat dissipation method

A technology of fan diversion and active heat dissipation, which is applied to the cooling/heating devices of lighting devices, headlights, signal devices, etc., which can solve the problems of inability to form directional diversion, prolong the service life and accelerate the heat exchange speed Effect

Pending Publication Date: 2019-08-02
ZHEJIANG TIANCHONG VEHICLE LAMP GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the air circulation process, the air around the headlights flows to the cooling block in an irregular manner, which cannot form a directional diversion effect. In other words, the air around the lamp board cannot be directed directly to the cooling block for heat exchange treatment.

Method used

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  • Device for improving active heat dissipation efficiency of light-emitting diode (LED) automobile headlamp by using fan guide hood, and heat dissipation method
  • Device for improving active heat dissipation efficiency of light-emitting diode (LED) automobile headlamp by using fan guide hood, and heat dissipation method
  • Device for improving active heat dissipation efficiency of light-emitting diode (LED) automobile headlamp by using fan guide hood, and heat dissipation method

Examples

Experimental program
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Effect test

Embodiment 1

[0028] like figure 1 and figure 2 As shown, a device for improving the active heat dissipation efficiency of LED automobile headlights by using a fan shroud includes a reflector mechanism 1, and a lamp panel 2 is arranged inside the reflector mechanism 1. The lamp panel 2 generates a light source by LED lamp beads, and the reflector A fan 3 and a heat dissipation block 4 are arranged outside the mechanism 1, and the axis lines of the fan 3 and the heat dissipation block 4 are parallel to each other. One end away from the fan, and the end opening of the wind deflector 5 faces the lamp board 2 .

[0029] As we all know, LED headlights generate a lot of heat, and when they continue to work in a high-temperature environment, low power, light decay, reduced lifespan, and failures will occur. Therefore, the heat dissipation performance of LED headlights determines the service life to a certain extent. The heat dissipation in the prior art mainly relies on heat dissipation strips ...

Embodiment 2

[0046] like figure 2 As shown, the method of using the fan shroud to improve the active heat dissipation efficiency of LED automobile headlights for heat dissipation is that when the lamp panel is working, the fan 3 is turned on to suck out the air in the heat dissipation block 4, and the heat dissipation block generates negative pressure, and the air passes through The shroud 5 enters into the cooling block.

[0047] The lamp bead 12 generates heat during operation, and the heat is transferred to the lamp board 2 , and the lamp board 2 is transferred to the heat conducting plate 9 , and the heat is transferred to the heat sink 13 through heat conduction. The fan 3 is turned on to allow air to flow into the cooling holes 4 through the shroud 5 to exchange heat with the cooling fins 13 . During the flow of air, as mentioned above, only the surface of the lens and the surface of the reflector also exchange heat for the lens and reflector, that is, the cold air continues to flo...

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Abstract

The invention belongs to the technical field of automobile headlamps, and relates to a device for improving the active heat dissipation efficiency of a light-emitting diode (LED) automobile headlamp by using a fan guide hood, and a heat dissipation method. The device comprises a reflecting mirror mechanism; the reflecting mirror mechanism is internally provided with a lamp panel; the reflecting mirror mechanism is externally provided with a fan and a heat dissipation block, and the fan is parallel to the shaft axis of the heat dissipation block; the reflecting mirror mechanism is also providedwith the guide hood, and the guide hood is arranged at the end, far away from the fan, of the heat dissipation block in a surrounding way; an opening at the end of the guide hood faces the lamp panel. After the device is provided with the guide hood, the surface of the headlamp can be directly cooled by means of the air; after the heat dissipation block is matched for use, the effect of rapidly cooling the whole headlamp is achieved, so that the heat dissipation speed is accelerated, and the service life of the headlamp is prolonged.

Description

technical field [0001] The invention belongs to the technical field of automobile headlights, and relates to a device for improving the active heat dissipation efficiency of LED automobile headlights by using a fan shroud. Background technique [0002] As we all know, LED headlights generate a lot of heat, and when they continue to work in a high-temperature environment, low power, light decay, reduced lifespan, and failures will occur. Therefore, the heat dissipation performance of LED headlights determines the service life to a certain extent. The heat dissipation in the prior art mainly relies on heat dissipation strips and fans. In terms of working methods, the fans are active heat dissipation, and the heat dissipation strips are passive heat dissipation. [0003] When using a fan to dissipate heat, it is usually equipped with a heat sink. The heat sink transfers the heat of the lamp board to the heat sink through heat conduction, and the fan exchanges heat with the heat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S41/30F21S41/141F21S41/25F21S41/36F21S45/48F21S45/43F21V29/67F21V29/71F21V29/74F21V7/00F21V5/04F21V19/00F21Y115/10
CPCF21S41/30F21S41/141F21S41/25F21S41/36F21S45/48F21S45/43F21V29/67F21V29/71F21V29/74F21V7/00F21V5/04F21V19/003F21Y2115/10
Inventor 周宇周猛
Owner ZHEJIANG TIANCHONG VEHICLE LAMP GROUP