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팬과 히트 싱크를 이용한 LED 전조등의 냉각성능 해석
고만석(Manseok Ko),이주한(Juhan Lee),오상준(Sangjune Oh),조현석(Hyenseok Cho),서태범(Teabeom Seo) 대한기계학회 2009 大韓機械學會論文集B Vol.33 No.12
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.