Enhancing Thermal Performance of Compact High Power LED Array using Vapor Chamber-Based Plate

摘要：

　　The vapor chamber has already been confirmed that its antigravity,high effective thermal conductivity and suitable for high heat flux of heat source as the integral heat spreader.In this study,a compact high power LED array with vapor chamber-based plate has been designed and fabricated.The device temperature distribution of a 100 Watt LED array using vapor chamber-based plate has been investigated using thermal imager.To make comparison,the LED array using copper-based plate was also investigated.The experimental results show that the thermal performance of the compact LED array vapor chamber-based plate is much better than that of the LED array copper-based plate with the same heat sink in natural convection.And the average temperature of LED copper-and vapor chamber-based plate are 99.6 ℃ and 43.5 ℃ at 100 W respectively.In addition,100 Watt LED array vapor chamber-based plate is 1.5 ℃ less than 7℃ of the 100 Watt LED array copper-based plate for the central wall temperature of the lighting side.Thus,the vapor chamber provides a new thermal management method to solve the heat dissipation of the compact high-power LED array.Furthermore,measurement results show that the vapor chamber can effectively lower the spreading resistance and diminish the hot spot effect.

关键词： High power LED array Vapor chamber Electronic cooling Thermal performance base plate

作者: p.Zhang M.Cai W.B.Chen Z.Zhang D.G.Yang

作者单位: Guilin University of Electronic Technology, No.1 Jinji Road, Guilin, Guangxi, 541004, China ; Nanjin Guilin University of Electronic Technology, No.1 Jinji Road, Guilin, Guangxi, 541004, China

会议类型: 国际会议

会议名称: 9th China International Forum on Solid State Lighting(第九届中国国际半导体照明论坛)

会议地点: 广州

会议语种:英文

页码: 89-91

在线出版日期: 2012-11-05（万方平台首次上网日期，不代表论文的发表时间）