Back to Search Start Over

Design of automotive headlamp with high-power LEDS.

Authors :
Wang, J.
Cai, Y.
Li, X.
Zhao, X.
Zhang, C.
Source :
International Journal of Automotive Technology. Jun2014, Vol. 15 Issue 4, p673-681. 9p.
Publication Year :
2014

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. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
12299138
Volume :
15
Issue :
4
Database :
Academic Search Index
Journal :
International Journal of Automotive Technology
Publication Type :
Academic Journal
Accession number :
96210628
Full Text :
https://doi.org/10.1007/s12239-014-0070-2