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http://dx.doi.org/10.5916/jkosme.2014.38.6.737

Design and fabrication of a high power LED searchlight  

Kim, Se-Jin (Division of Electrical and Electronics Engineering, Korea Maritime and Ocean University)
Kim, Sun-Jae (Division of Electrical and Electronics Engineering, Korea Maritime and Ocean University)
Ha, Hee-Ju (Division of Electrical and Electronics Engineering, Korea Maritime and Ocean University)
Kil, Gyung-Suk (Division of Electrical and Electronics Engineering, Korea Maritime and Ocean University)
Kim, Il-Kwon (Electric and Electronic Research Division, Korea Marine Equipment Research Institute)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.38, no.6, 2014 , pp. 737-743 More about this Journal
Abstract
This paper dealt with a retrofit high power LED searchlight to replace conventional 1kW halogen searchlights. The design specification meets KDS 6230-1046-1 and KS V 8469. An optical lens with the beam angle of $6^{\circ}$ was used to meet the luminous intensity of 800,000cd at $0^{\circ}$ in horizontal line. Heat dissipation of the LED searchlight adopted a free air cooling type which does not use a fan or a heat-pipe. From the test results, power consumption of the prototype LED searchlight was 148W which was saved by 85% comparing a halogen searchlight of 1kW. Luminous intensity was 945,000cd at $0^{\circ}$ in horizontal line, satisfying KS V 8469. Luminous efficacy was improved by 4.7 times higher than that of the halogen searchlights. Beam angle, color temperature, and color rendering index(CRI) was $5.4^{\circ}$, 5,500K, and 70, respectively. Surface temperature of the LED searchlight was below $60^{\circ}C$ and surrounding temperature of the SMPS installed inside was below $50^{\circ}C$ which were satisfied with the IEC 60092-306.
Keywords
LED; Searchlight; KDS 6230-1046-1; KS V 8469; Luminous efficacy;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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