基于热学特性的LED光效的评价方法研究  

Research of The Evaluation Method of The LED Luminous Efficacy Based on The Thermal Characteristics

作　　者：史永胜[1] 常亚婷[1] 张普雷[1] 

机构地区：[1]陕西科技大学电气与信息工程学院,陕西西安710021

出　　处：《照明工程学报》2010年第6期70-73,共4页China Illuminating Engineering Journal

基　　金：陕西省教育厅专项研究计划（No.07JK188）.

摘　　要：作为普通照明应用的光源，光效是其主要指标之一。与传统光源不同，LED光效及寿命等与结温密切相关，因此本文通过实验测试了LED器件在工作时温度及光度的变化，分析了现有评价LED光效的方法包括短时间脉冲电流法与在一定结温下测试光通量的方法用于评价照明用LED光效存在的问题，给出了标准散热器光效的评价方法，并通过实验证实这种评价方法对LED用于照明灯具具有实际的指导意义。For general lighting application, the luminous efficacy of light source is one of its main performances. Comparing with traditional light source, the luminous efficacy and life of LED are directly bound up with the temperature of PN junction. Based on experiments, this article tested LED~ temperature and photometric changes when it is in working state; analysed existing assessment methods, including short-pulse current law and way to testing LED~ luminous flux when PN junction under certain temperature , to test luminous flux when LED lamp used as general lighting lamp; proposed standard radiator lighting efficiency evaluation method ; and confirmed that the evaluation method of the LED lamps for illumination has guiding significance.

关 键 词：电光源 照明电器 标准化 贸易技术壁垒 

分 类 号：TM923.321[电气工程—电力电子与电力传动]