Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Design and fabrication of a high power LED searchlight

고출력 LED 탐조등의 설계 및 제작

  • 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)
  • Received : 2014.04.22
  • Accepted : 2014.06.02
  • Published : 2014.07.31
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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.

본 논문에서는 기존 1kW 할로겐 탐조등을 대체하기 위한 고출력 LED 탐조등에 관하여 기술하였다. 설계사양은 KDS 6230-1046-1과 KS V 8469를 기준으로 하였으며, 요구 광도 800,000cd를 만족시키기 위하여 지향각 $6^{\circ}$의 렌즈를 사용하였다. 시제작 LED 탐조등의 방열은 공랭식으로써 팬이나 히트파이프를 사용하지 않았다. 시험결과, 시제작 LED 탐조등의 소비전력은 148W로 1kW 할로겐 탐조등에 비해 85% 절감되었으며, 중심광도는 945,000cd로써 KS V 8469를 만족하였다. 광효율은 기존 탐조등보다 4.7배 향상되었으며, 지향각, 색온도 및 연색성은 각각 $5.4^{\circ}$, 5,500K, 70이었다. LED 탐조등의 외함 온도는 $60^{\circ}C$ 이하이고, SMPS 주변 온도는 $50^{\circ}C$ 이하로 IEC 60092-306을 만족하였다.

Keywords

References

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