摘要
为了更好地解决LED筒灯散热问题,利用CFD热仿真软件建立LED筒灯散热模型。考虑了的材料导热率设置、热阻计算、辐射率设定、热载荷形式等影响灯具散热因素,然后用数值分析模拟和实验室测试相结合的方法,综合分析灯具散热情况。在此基础上,着重研究LED颗数及LED间距对光源散热的影响,在仿真分析的基础上对现有LED筒灯光源布局进行优化。经过实验测量验证,光源布局优化后的LED工作温度更为理想,能有效提高LED灯具的寿命,对LED筒灯的开发设计具有重要的实践意义。
In order to solve the heat dissipation software is used to establish LED downlight d problem of LED 1SS1 model. downlight, CFD thermal simulation After the consideration of thermal conductivity of materials, thermal resistance, thermal radiation coefficient, heat load forms and other factors, the numerical simulation and combined laboratory test is used to analysis the lamp＇s heat dissipation. Based on this analysis, the paper is focused on the dissipation effect with the LED numbers and the mutual distance. Then LED chips layout of current LED downlight is optimized. Experiment verifies the LED working temperature is much low after optimization and it may improve the LED lamp lifetime effectively. The method may also be used in the future LED downlight design.
出处
《照明工程学报》
2013年第3期81-86,共6页
China Illuminating Engineering Journal
基金
国家科技支撑计划项目(2011BAE01B10)
863计划项目(2011AA03A109)
关键词
照明
LED筒灯
散热
建模
仿真
lighting
LED Downlight
heat dissipation
modeling
simulationz
