Title :
Structure optimization of heat sink for high power LED street lamp
Author :
Ding, Kaikai ; Feng, Shiwei ; Guo, Chunsheng ; Zhang, Guangchen ; Gao, Chen
Author_Institution :
Coll. of Electron. Inf. & Control Eng., Beijing Univ. of Technol., Beijing, China
Abstract :
Light emitting diode (LED) is now widely used in many fields including traffic lights, vehicle backlights and liquid crystal display (LCD) displays because of their long life, good illumination efficiency and low energy consumption. For the high power LED street lamp, a low operating temperature is essential for LED chips. However, it´s waste and meaningless to increase the size of heat sink for high power LED street lamp immoderately. In this paper, structure optimization of heat sink is studied on the condition that the heat sink is sufficient for cooling demand of 196W LED street lamp. 1/7, 2/7 and 3/7 length diminution of the heat sink are studied respectively. Results show that temperature of plate surface is increased 16°C with 3/7 bulk and weight reducing. And cross-sectional shape optimization of fin is also studied. The result show that the bulk and weight of fins are reduced over 50% with only 0.42°C temperature rise. The results of this work provide useful guidelines for thermal management of the heat sink without affecting the cooling demand of high power LED street lamp.
Keywords :
cooling; energy management systems; heat sinks; light emitting diodes; optimisation; street lighting; LED street lamp; cooling demand; heat sink; light emitting diode; power 196 W; shape optimization; structure optimization; thermal management; Analytical models; Heating; Light emitting diodes; Medical services; Numerical models; Thermal analysis; heat sink; high power LED street lamp; structure optimization; thermal management;
Conference_Titel :
Electronics and Optoelectronics (ICEOE), 2011 International Conference on
Conference_Location :
Dalian
Print_ISBN :
978-1-61284-275-2
DOI :
10.1109/ICEOE.2011.6013179
