大功率LED散热器综述  

Review on High Power LED Radiator

作　　者：唐帆[1] 郭震宁[1] 

机构地区：[1]华侨大学信息科学与工程学院,福建省光传输与变换重点实验室,福建厦门361021

出　　处：《中国照明电器》2017年第8期24-26,共3页China Light & Lighting

基　　金：福建省科技计划引导性重点项目(2016H0022);华侨大学研究生科研创新能力培育计划资助项目(1400201001)

摘　　要：LED(发光二极管)作为第四代照明光源,因其环保、体积小、寿命长等优点,在各类实际应用中,已经逐渐取代了传统光源。但是它的光电转换效率很低,致使大部分能量转变成了热能,如果这些热量无法及时散去,则会使LED结温大幅增高,影响其各方面性能及寿命。为了提高LED的散热能力,常将LED配合散热器一起使用。基于此,对大功率LED常用的自然对流、热管、液体冷却和强制对流散热器的结构、工作原理和应用范围进行了分析与介绍。Because of environmental protection, small volume, long service life, light emitting diodes （LEDs） become the fourth generation of lighting source and have gradually replaced traditional light sources in all types of practical applications. However, the photoelectric conversion efficiency of white LEDs is low. Most of the energy is transferred into heat, and if this heat cannot dissipate in time, the LED junction temperature will increase significantly, adversely affecting the performance and lifetime of the LED. In order to improve the heat dissipation ability of LED, the LED was often used with the radiator. Based on this, we analyzed and introduced the structure, working principle and application scope of the natural convection, heat pipe, liquid cooling and forced convection which high power LED commonly used.

关 键 词：散热 散热器 烟囱效应 最高温度 LED 

分 类 号：TM923.34[电气工程—电力电子与电力传动]