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LED automotive dipped headlight

An LED light source and low beam technology, applied in the field of LED lighting, can solve the problems of less application of headlights and stay, and achieve the effects of saving lamp space, stable and output luminous flux, and prolonging lamp life.

Active Publication Date: 2011-06-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of headlights as automobiles is still rare, and even stays in the stage of concept car application. The main reason is that it is necessary to improve the luminous efficiency of LEDs.

Method used

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  • LED automotive dipped headlight
  • LED automotive dipped headlight
  • LED automotive dipped headlight

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] An embodiment, an LED car low beam, consists of 18 high-power LED light sources 9, an independent reflector 10 for each LED, a concave lens 2 and an oval heat sink. Each reflective cup 10 and an LED light source 9 form a small reflective optical system. The reflective cup 10 adopts a parabolic curved surface, and the LED light source 9 is located at one of the focal points of the parabolic curved surface. The light emitted by each LED light source is directly irradiated within Φ30°, and when the angle is greater than Φ30°, the light is reflected by the reflector 10 to emit light in a manner close to parallel light. All the reflectors are arranged in a ring, and are inclined at a specific angle α to the inner side of the lamp to ensure that the parallel light reflected by the reflector 10 is projected toward the front focus 7 of the concave lens 2, and is refracted by the concave lens 2 to irradiate forward with a parallel beam. This mixed light distribution method of re...

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PUM

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Abstract

The invention discloses an LED automotive dipped headlight comprising a supporting shell, a concave lens, an LED installation base plate, a heat radiator and a plurality of LED light sources, wherein the LED light sources are arranged on the LED installation base plate; the concave lens and the LED installation base plate are connected with the supporting shell; the concave lens is positioned on a light-emitting port of the supporting shell; each LED light source is independently positioned in a reflection cup; LED emergent rays of the reflection cups are parallel to central axes of the LED light sources and emitted to a focal point of the concave lens, which is positioned at the outer side of the supporting shell; and the heat radiator is connected with the LED installation base plate.

Description

technical field [0001] The invention belongs to the technical field of LED lighting, and in particular relates to an LED automobile low beam lighting lamp. Background technique [0002] For a long time, the automotive headlight light source market has been dominated by halogen lamps and xenon lamps. However, these two traditional lighting lamps have fatal weaknesses in brightness, life, volume, heat generation, color temperature adjustment, and robustness. As a new type of light source, light-emitting diode LED has the advantages of long life, energy saving, good light quality, simple structure, fast response, low voltage, and small size. Moreover, the luminous efficiency of LED is getting higher and higher, and it is very hopeful that all other existing lighting technologies will be eliminated and the car lamp market will be monopolized. Various traditional lighting companies in the world are also stepping up the research work of LED lighting applications. The application ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/10F21V5/04F21V7/06F21V17/00F21V19/00F21V29/00F21W101/10F21Y101/02F21V29/503F21V29/74F21Y107/10F21Y115/10
Inventor 王洪郭志友吴衡王丽君蔡镇准
Owner SOUTH CHINA UNIV OF TECH
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