LED headlamp

Abstract

The invention relates to an LED headlight mainly composed of an LED wick, an LED drive board, a lamp glass, and a sealed assembly of a lamp housing. Assembled composition, the end of the horizontal light barrier close to the convex lens is made into the shape of the cut-off line required for the low beam, the horizontal light barrier separates the reflector into upper and lower parts, and the LED light source is composed of an upper light source and a lower light source. In the present invention, the end of the horizontal light-shielding plate close to the convex lens is manufactured into the shape of the cut-off line required for low beam, so that the low beam light emitted by the wick meets the requirements of the low beam light distribution performance standard of LED headlamps for automobiles; the invention has simple structure, It is compact and has good anti-vibration performance; the area ratio of the upper and lower low beam light distribution reflectors of the present invention is set reasonably, so that the high beam and low beam emitted by the vehicle lamp of the present invention can respectively meet the requirements of driving for low beam and high beam.

Description

technical field [0001] The technology of the present invention belongs to the field of automobile engineering, and in particular relates to an LED headlamp. Background technique [0002] At present, the far and near light integrated projection headlights have been used in some high-end cars, and their appearance is magnificent, beautiful and high-end. Its structure and working principle are as follows: the wick structure is mainly composed of a convex lens, a lens holder, a reflector, a light barrier, an electromagnet, a light bulb, etc., and the upper part of the light barrier is made into the shape of the bright and dark lines required for low beams. When the car needs low beams, the light barrier is in a closed state, blocking the lower part of the light outlet of the reflector, and the light emitted by the bulb can only be emitted from the upper part of the reflector, refracted by the convex lens, and illuminate the lower part of the road ahead of the car. The principle...

AI Technical Summary

Problems solved by technology

At present, the far and near light integrated projection headlights have disadvantages such as low light efficiency, short life, and high noise.

The analysis is as follows: (1) When the low beam is in the state, the light below is blocked, the light energy cannot be effectively used, and it becomes a waste of heat energy; (2) To meet the high beam light distribution requirements, it is necessary to increase the power of the bulb, or Use xenon bulbs; (3) The halogen bulbs or xenon bulbs used in the headlights have a short lifespan, and the bulbs need to be replaced from time to time during the driving of the car; (4) When the light shield is opened and closed, due to the action of the electromagnet, will make noise

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