Skip to main navigation Skip to main content
  • KIEEME

J Electr Electron Mater : Journal of Electrical and Electronic Materials

OPEN ACCESS
ABOUT
BROWSE ARTICLES
EDITORIAL POLICIES
FOR CONTRIBUTORS

Page Path

1
results for

"Ultra-low temperature"

Keywords

Publication year

Authors

"Ultra-low temperature"

Light Source and Application Technology : A Study on the Application of LED at Ultra-low Temperature
Hee Ju Ha, Jin Wook Kim, Sun Jae Kim, Gyung Suk Kil
J Electr Electron Mater 2014;27(9):600-605.   Published online September 1, 2014
The interest in development on luminaires which are available up to -52℃ is surging as demands in vessels navigating a north pole route increase. A conventional incandescent lamp used invessels is operated stably at -52℃, but many countries including Korea have eliminated the use of incandescent lamps gradually because of its low luminous efficacy. In this paper, therefore, to develop the LED luminaires with high-efficiency, long lifetime that enables to substitute for incandescent lamp, it has studied about cryogenic characteristics of LED packages, bulbs, driving circuit and power supply. This experiments were carried out according to standards IEC 60945-8.4.1. Temperature range is from -60℃ to25℃, and the light output depending on ambient temperature. It showed that, based on 25℃, light output of a CFL decreased by 80% of CFL at -20℃ while each increased 12% of LED bulbs and 16∼19% of LED packages at -60℃.
  • 8 View
  • 0 Download