无散热器LED异形灯设计与实验  

Design and Experiment of Special-Shaped LED Lamp Without Radiator

作　　者：唐帆[1] 郭震宁[1] 林介本[1] 张佳宁[1] 李建鹏[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：《光学学报》2016年第9期267-272,共6页Acta Optica Sinica

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项目(1400201001)

摘　　要：为了降低发光二极管(LED)灯具的重量和生产成本,根据烟囱效应原理,设计了一种无散热器的LED异形灯。利用Solidworks软件建立三维模型,通过其插件Flow Simulation进行热仿真。并以烟囱高度为30mm,烟囱通道直径为20mm的参数为基础模型,研究不同烟囱高度和烟囱通道直径对LED异形灯最高温度的影响。仿真结果表明:对于烟囱高度和烟囱通道直径都为45 mm,基板重量为35.86g的LED异形灯,当输入功率为6,8,10 W时,其最高温度都低于芯片的安全结温85℃,可满足LED安全工作的要求。对8W的LED异形灯进行实验验证,结果表明LED异形灯的最高温度为73℃,与仿真结果仅相差2.06℃,验证了仿真的正确性。所设计的无散热器LED异形灯不仅可以很好地满足LED散热要求,而且重量轻、成本低、制造简单。In order to reduce the weight and production cost of light emitting diode （LED） lamps, a special-shaped LED lamp without radiator is designed based on the principle of the chimney effect. A three-dimensional model is built by Solidworks software, and its plug-in called Flow Simulation is used to simulate the model. Based on the model that the height of chimney is 30 mm and diameter of chimney is 20 mm, the influences of different heights and diameters of chimney on the highest temperature of the special-shaped LED lamp are studied. Simulation results show that for the special-shaped LED lamp with the chimney height of 45 mm, chimeney diameter of 45 mm and substrate weight of 35.86 g. The highest temperatures of the LED are all lower than security junction temperature of 85 ℃, when the input powers are 6,8,10 W, which meets the security requirements. The experiment of special- shaped LED lamp with the power of 8 W is carried out. The result shows that the highest temperature of the special-shaped LED lamp is 73 ℃, which is only 2. 06 ℃ higher than the simulation results. It confirms the correctness of the simulation. In conclusion, this special-shaped LED lamp without radiator not only has the ability to well satisfy the heat dissipation requirements of LED, but also has the light weight, a low cost and a simple manufacturing process.

关 键 词：光学器件 散热 异形灯 烟囱效应 最高温度 

分 类 号：TN312[电子电信—物理电子学]