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2012•Advanced materials researchOpen access

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

Hai Lin Liu, Li Gang Wu, Shi Xun Dai, Wan Jiong Lin, Boyou Zhou, Xiao Jin

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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.

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What this paper is about

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.

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Available 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.

Key concepts: Heat sink, Fin, Materials science, Thermal resistance, Thermal, Heat transfer, Thermal management of high-power LEDs, Sink (geography)

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Effect of Pin-Fin Heat Sink Structure and Irradiation Angle on High-Power LED Down-Light Thermal Performance — Research Paper | ScholarLens