Abstract A novel vehicle headlamp low beam system is presented. The optical system is composed of three identical cells to ensure enough illumination. A poly-ellipsoid reflector and a aspherical lens are used to concentrate the rays and a baffle is employed to produce the cut-off line. The optical performance shows a good agreement with the requirement for headlamp in Chinese national standard. The smart constant current driver sustains automotive headlamps᾿requirements, moreover it has high power efficiency. The performance of three kinds of cooling systems with different structures are simulated and evaluated by FloTHERM software. Then a loop heat pipes combined with fins cooling system is manufactured for cooling the designed LED headlamp. It can greatly improve the cooling efficiency. Even in the 80°C environmental temperature, it can meet the working requirements of LED headlamp low beam system, so it is a kind of feasible cooling scheme.


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    Title :

    Design of automotive headlamp with high-power LEDS


    Contributors:
    Wang, J. (author) / Cai, Y. X. (author) / Li, X. H. (author) / Zhao, X. J. (author) / Zhang, C. (author)

    Published in:

    Publication date :

    2014-05-28


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Design of automotive headlamp with high-power LEDS

    Wang, J. / Cai, Y. X. / Li, X. H. et al. | British Library Online Contents | 2014


    Design of automotive headlamp with high-power LEDS

    Wang, J. / Cai, Y. X. / Li, X. H. et al. | Online Contents | 2014


    Studies for Headlamp Optical Design Using LEDs

    Wang, B. / Jiao, J. / Society of Automotive Engineers | British Library Conference Proceedings | 2004


    Studies for headlamp optical design using LEDs

    Wang,B. / Jiao,J. / North American Lighting,US | Automotive engineering | 2004


    Studies for Headlamp Optical Design Using LEDs

    Wang, B. / Jiao, J. / Society of Automotive Engineers | British Library Conference Proceedings | 2004