同心柱状LED模组及其散热结构设计

摘要

A LED module without substrate and its manufacture process are proposed, as well as the design of its cylinder heat sink peripheral cooling system. The LEDs in this module are directly refl owed on the mutually insulated concentric cylinder. Compared with the LED module with the aluminum base circuit board, the new LED module has lower thermal resistance and the LED's junction temperature is also lower. Ansys software is used to analyze and optimize the structure of the module with cylinder heat sink cooling system. And the LED's junction temperature of the module is measured by the forward voltage method. The results show that: LED's junction temperature is 62.7℃ in the rated condition. While in the condition of 50 percent higher than the rated condition, the LED's junction temperature is 83.15℃.%提出一种热电隔离式同心柱LED模组,对其进行散热结构设计,探讨其制造工艺.这种热电隔离式LED模组直接将灯珠回流在相互绝缘的同心铜柱上.与传统的含基板的LED模块相比,这种LED模组具有较低的热阻特性和较低的结温.应用Ansys分析了热电隔离式模组的散热特性与结温,并通过正向电压法测出了LED结温.结果表明:额定条件下使用时,LED结温为62.7℃,超功率50%使用时,LED结温为83.2℃.