Thermal simulation and optimization design on a high-power LED spot lamp

Abstract

In this paper, thermal characteristics of the high-power LED spot lamp are reported. The emphasis is placed upon optimizing design of the heat sink of LED spot lamp using the optimization module and the orthogonal-experiment method. Results demonstrate that the weight of the heat sink is decreased to 46.1% of that for the initial structure, and the influence of each factor on junction temperature and weight of the heat sink is acquired by range analysis. Finally, the influence of ambient temperature and natural convection coefficient on the LED maximum temperature is analyzed. The results and the optimizing methodology are of great importance to the thermal design of LED lamps.

Keywords

Heat Sink / Heat Pipe / Convection Coefficient / Junction Temperature / Lead Lamp

References

[1] LuX.-y., HuaZ.-z., LiuM.-j., ChengY.. Journal of OptoelectronicsLaser, 2009, 20: 5

[2] MaL., LiuJ., MaK.-q., ZhouY.-x.. Journal of OptoelectronicsLaser, 2009, 20: 1150

[3] YuG.-y., ZhuX.-p., HuX.-b.. Semiconductor Technology, 2010, 35: 443

[4] Ank M and Weaver S, Proc. of SPIE, 5530 (2004).

[5] Aizar Abdul KarimN., Aswatha NarayanaP. A., SeetharamuK. N.. Microelectronics International, 2006, 23: 19

[6] KimL., ChoiJ. H., JangS. H., ShinM. W.. Thermochimica Acta, 2007, 455: 21

[7] KimY.-W., KimJ.-P., KimJ.-B., KIMM.-S.. Journal of the Korean Physical Society, 2009, 54: 1873

[8] TreurnietT., LammensV.. 22nd IEEE SEMI-THERM Symposium, 2006, USA, Senta Clara

[9] ChengJ.-H., LiuC.-K., ChaoY.-L., TainR.-M.. IEEE International Conference on Thermoelectrics, 2005, USA, Clemson University

[10] ZhangH.-b., LvY.-j., ChenH.-t., LiK., GaoY.-l., ChenZ., ChenG.-l.. Journal of OptoelectronicsLaser, 2009, 20: 454

[11] ZhangQ., ChenX.. Electronics and Packing, 2009, 9: 44

[12] HuJ., YangL., HwangW. J., ShinM. W.. Journal of Crystal Growth, 2006, 288: 157