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http://dx.doi.org/10.4313/JKEM.2014.27.9.594

Thermal Design of High-power 5 Watt LEDs-based Searchlight  

Lee, A Ram (LED Convergence Engineering, Pukyong National University)
Her, In Sung (LED-Marine Convergence R&BD Center, Pukyong National University)
Lee, Se-Il (LED-Marine Convergence R&BD Center, Pukyong National University)
Yu, Young Moon (LED-Marine Convergence R&BD Center, Pukyong National University)
Kim, Jong Su (Department of Image Science & Engineering, Pukyong National University)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.27, no.9, 2014 , pp. 594-599 More about this Journal
Abstract
The heat dissipation conditions of high-power 5 watt LEDs-based searchlight modules were optimized with varying LED bar'shape, materials, and ambient temperature. The LED junction temperature was estimated by using Computational Fluid Dynamics simulation. The optimal heat dissipation conditions were found as follows; LED bar' shape: L=80 mm, W=4 mm, t=10 mm, copper material, LED junction temperature of $116.6^{\circ}C$, ambient temperature of $50^{\circ}C$, total mass of 184 g, and shadowing area of $320mm^2$. The difference between the junction temperatures of our fabricated and simulated LEDs-based searchlight modules is about $3^{\circ}C$, which confirms the validity of our thermal simulation results.
Keywords
Searchlight; Thermal simulation; LED junction temperature; High-power LED;
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