High beam and low beam integrated LED headlamp

Abstract

The invention discloses a high beam and low beam integrated LED headlamp. The high beam and low beam integrated LED headlamp comprises an LED light source, a lens set, a light distributing unit, a movable cut-off light barrier and a collecting lens which are sequentially arranged, wherein the focus of the lens set is on an optical axis of the corresponding LED light source; the light distributing unit and the movable cut-off light barrier are correspondingly positioned at the upper side and the lower side of the optical axis of the LED light source. The high beam and low beam integrated LED headlamp is simple in structure, and low in cost, and meets the demand of a high beam and a low beam.

Description

Technical field [0001] The present invention relates to the technical field of vehicle lighting, in particular to a far-near integrated LED headlamp. Background technique [0002] The application of LED light sources in the field of automotive headlights is still in its infancy. The main reason is that various engineering technical problems such as light distribution design, heat dissipation, stress, and volume have not been well resolved during the specific implementation process. Among them, light distribution design, heat dissipation, and heat resistance design face more problems. [0003] For example, there are currently two main types of light distribution design schemes for automotive LED headlights: [0004] One is to use small LED wicks to directly replace the original halogen bulbs or xenon bulbs of models such as H4 and H7 in the traditional large-size curved reflector lamp cup. There are problems that are difficult to solve: due to the essential difference in the luminou...

AI Technical Summary

Problems solved by technology

There are problems that are difficult to solve: due to the essential difference in the light-emitting characteristics of LEDs, halogen lamps and xenon lamps, the light distribution performance cannot meet the requirements of "GB 4599-2007 Filament Bulb Headlamps for Automobiles" and "GB25991 LED Headlamps for Automobiles" regulatory requirements

[0005] The second is a scheme composed of LED light source chips, composite ellipsoidal reflectors, light barriers, and lenses; the existing problems are: ①Since the composite ellipsoidal reflector contains many asymmetric structural units, processing costs and manufacturing processes Difficulty is high, when facing mass production, due to small manufacturing tolerances and more limitations in quality assurance

② While the LED emits light, it also radiates a lot of heat. In the relatively high-temperature lamp body, the material of the composite ellipsoidal reflector cup is easy to age, and the reflective coating appears to fall off and blacken, resulting in a decline in the headlight efficacy or even failure.

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