摘要
提出了使用玻璃管散热的LED光源模组结构。研究了玻璃管结构尺寸、玻璃管光源放置方向、玻璃管内壁和外壁贴装LED元件等因素对LED结温的影响。结果表明:玻璃管长度的改变、光源贴在玻璃管内壁或是外壁等因素对于管状玻璃LED光源的结温影响很小;当玻璃管两头都不封口时,芯片结温随着玻璃管壁厚的增加先降低后升高,若管径为17 mm,其最佳的壁厚为4 mm;当玻璃管底部封口时,芯片结温随着壁厚的增加而降低;对于直径为17 mm、长度为45 mm、壁厚为1 mm的玻璃管,且玻璃管光源轴线与竖直方向的夹角α为30°时,LED芯片的结温最低。
The application of glass tubes as the heat sinks of LED light source module has been proposed. Some factors affecting the LED junction temperature has been studied, such as the size of glass tubes, the placement direction of the module, the type of LED mount on the inner or the outer surface of tubes. It shows that the length of glass tubes and the types of LED mount have little effect on LED junction temperature. When the tube is unsealed, the LED junction temperature decreases first and then increases with the increasing of the thickness of glass tubes. If the diameter of the glass tube is 17 mm, the optimum thickness is 4 mm. When the bottom of the glass tube is sealed, the LED junction temperature will decrease with the increasing of the thickness. The LED junction temperature will be lowest when the angle between the axis of tube and the vertical direction is 30° for a tube with diameter of 17 mm, length of 45 mm, and thickness of I mm.
出处
《电子工艺技术》
2015年第1期1-3,62,共4页
Electronics Process Technology
基金
广东省科技创新资金项目(2012CY142)
关键词
连接器
表面贴装
焊接故障
无铅器件
LED light source module
Glass tube dissipation
Thermal simulation
Junction temperature
