Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Cooling Performance of LED Head Lamp with Heat Sink and Cooling Fan

팬과 히트 싱크를 이용한 LED 전조등의 냉각성능 해석

  • Published : 2009.12.01
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Abstract

LED has the merits of high reliability, semi-permanent life, rapid-response and its small size for use as light source of head lamp. But the dependence of its performance and life on temperature affect on its practical use. Which dependence makes problem when the LED is heated up to a higher temperature level by self-generation of heat, due to "highly integration" to get enough quantity of light. To solve this problem, effective cooling system is needed that consider conduction, convection and radiation. This study points out the limits of natural convection cooling system and propose of forced convection with heat sink. Also, it describes a correlation between heat sink area and fluid velocity using numerical analysis to optimize the cooling system.

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References

  1. Lee, D. G., Roh, D. S., Choi, J. B., Dong, S. G., and Ko, C. B., 2006, ' Micro Heat Dissipation Technologys for High Power LED (III )," KIER p. 172
  2. Aimal, A, Mitch, S. and William. I., 2007, ' Towards Developement of Thermal Standards for the Design of LED Lamps,' SAE Technical Paper Series NO. 2007-01-1037
  3. Yu, H., Freyssinier, J. P., Deng, L., Narendran, N. and Gu, Y., 2004, ' Solid State Light: Failure Analysis of White LED's,' J. Crystal Growth, 268, pp. 449-459
  4. Kang, H. W., Park, K. S. and Kang, B. D., 2007, ' The Effects of the Second heat Source on Heat Sink of LED Head Lamp,' KSAE07-S0179 p. 1152

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  5. Performance Assessment of a Temperature Control Unit used in a Lifecycle Testing System for LED Headlamps on Locomotives vol.19, pp.1, 2016, https://doi.org/10.7782/JKSR.2016.19.1.46
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