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Thermal Design of 21 W LED Light Engine Using Thermal Conductive Plastic

열전도성 플라스틱을 이용한 21 W급 LED Light Engine의 방열설계

  • Choi, Won-Ho (Department of Information & Communication Engineering, WonKwang University) ;
  • Choi, Doo-Ho (Department of Information & Communication Engineering, WonKwang University) ;
  • Lee, Jin-Yeol (Gooditech Co., Ltd.) ;
  • Park, Dae-Hee (Department of Information & Communication Engineering, WonKwang University)
  • Received : 2014.12.08
  • Accepted : 2015.01.16
  • Published : 2015.03.01

Abstract

This study will design the structural optimization of 21 W LED heat sink using the thermal conductive plastic materials. The thermal conductive plastic heat sink is inferior to aluminum heat sinks in thermal properties. This study will solve this problem using formability of thermal conductive plastic heat sink. A heat sink was optimized in terms of the number, and the thickness of fins and the base thickness of the heat sink, using the Heatsinkdesigner software. Also by using SolidWorks Flow simulation and thermal analysis software, the thermal characteristics of the heat sink were analyzed. As the result, the optimized heat sink has 17 fins, which are 1.5 mm thick and a 3.7 mm-thick base. The highest and the lowest temperature were $51.65^{\circ}C$ and $46.24^{\circ}C$ respectively. Based on these results, The thermal conductive plastic heat sink is considered possible to overcome heating problem when designing in complex structure.

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