摘要
设计了一款LED三角玻璃灯丝灯,利用艺术造型玻璃作为散热体与灯泡外壳,加长的LED灯丝光源由43颗芯片串联而成,由市电整流后直接驱动。LED灯丝的两个电极置于单端。用ANSYS有限元方法模拟了此款玻璃球泡灯丝灯在不同平均电流下的LED结温,采用正向电压法测量了此款玻璃灯的LED结温,结果表明:加长的LED灯丝可采用单端供电纯阻驱动,所设计的三角玻璃灯丝灯推荐使用的平均电流为10 m A,在此电流下结温为91.2℃,在保证使用寿命的前提下功率比传统灯丝球泡灯提高了25%。
Using art form glass as radiating body and bulb shell, a kind of new LED filament bulb with triangle glass was designed. The lengthened LED filament lighting source adopts 43 LED chips in series connection to match AC electric supply. Two electrodes of LED filament are arranged on the same end. The LED junction temperature of the glass bulb filament lamp with different average current was simulated by ANSYS finite element method and was measured by the forward voltage method respectively. The results showed that the lengthened LED filament can be driven directly by AC 220 V power supply with resistive load. When the driving current of LED filament bulb with triangle glass body is 10 mA, the LED junction temperature is 91.2℃. The rated power is 25% higher than that of traditional LED filament bulb in the condition of assuring reliability and working life.
作者
张红林
张夕奎
区燕杰
吴懿平
ZHANG Hong-lin ZHANG Xi-kui OU Yan-jie WU Yi-ping(l.Huazhong University of Science and Technology, Wuhan 430074, Chin Guangdong South China Institute of Semiconductor Optoelectronics, Jiangmen 529080, China Jiangmen Mailanrui Lighting appliance Co. Ltd., Jiangmen 529000, China)
出处
《电子工艺技术》
2016年第5期249-252,共4页
Electronics Process Technology
基金
广东省产学研计划基金项目(项目编号:2013B090600031)
关键词
LED灯丝
三角玻璃散热
LED结温
纯阻驱动
LED filament
triangle glass heat disspation
LED junction temperature
resistive load
