Effect of Pin-Fin Heat Sink Structure and Irradiation Angle on High-Power LED Down-Light Thermal Performance

Abstract:

The heat sink has played an important role in the thermal design of high power LED lamps. In this study, a pin-fin heat sink is designed for the 3-chips high power LED down-light. Thermal performance of pin-fin heat sink is researched by changing the fin height, fin number and lamp’s irradiation angle. Simulation results gotten by CFD software show that the pin-fin heat sink has better thermal performance with fin height of 40mm and fin number of 75. The LED down-light with a pin-fin heat sink has a better cooling effect in multi-angle irradiation. The results provide a reference for future design of pin-fin heat-sink.

• Periodical: Advanced Materials Research (Volumes 591-593)
• Pages: 653-656
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.591-593.653
• Online since: November 2012
• Authors: Hai Lin Liu, Li Gang Wu, Shi Xun Dai, Wan Jiong Lin, Bo You Zhou, Xiao Ming Jin
• Keywords: Computational Fluid Dynamics (CFD), Heat Sink, LED, Thermal Performance

References

[1] M. S. Rea, The IESNA Lighting Handbook,ninth ed.New York: Illum. Eng. Soc. of North America,2000.

[2] N.Narendran and Y.Gu,J.Display technol.,Vol(2005),P.167.

[3] Su Da,Wang Demiao.Technical on heat-release packaging of high-power LEDs.Semiconductor technology[J]. 2007, 32(9): 742-744, 749.

[4] R.V. Steele,"Kinetic model for degradation of light-emitting diodes,"IEEE J.Quant. Electron., Vol.33,No.6,(1997),pp.970-979.

[5] Ma xiangjun,Wu ligang,Dai shixun,et al.Thermal analysis of high-power LED tube lamp. Advanced materials research vols. 2011.308-210:346-350

DOI: 10.4028/www.scientific.net/amr.308-310.346