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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 29 , No. 4

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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 29, No. 4, pp. 281-287
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Aug 2020
Received 23 Jun 2020 Revised 29 Jul 2020 Accepted 30 Jul 2020
DOI: https://doi.org/10.7735/ksmte.2020.29.4.281
120 W급 LED 가로등 개발을 위한 열전반도체 이용 강제방열
조영태^a^{, *}

Forced Heat Dissipation in 120 W Street LED Using Thermoelectric Modules
Young-Tae Cho^a^{, *}
aDepartment of Basic Science, School of Eng., Jeonju University
Correspondence to : ^*Tel.: +82-63-220-2981 E-mail address: choyt@jj.ac.kr (Young-Tae Cho).

Abstract

This study was carried out to develop 120 W class light-emitting diode (LED) security lights with smaller heat dissipation devices by improving the heat dissipation efficiency compared to existing security lights. Four 30 W class chip-on-board (COB) LED modules were placed in a luminaire, with three modules subjected to forced heat dissipation using thermoelectric elements. The thermoelectric element and LED module were packaged as a unit to improve the performance of the thermoelectric element, and the unit satisfied the optimal conditions for low power energy consumption of the thermoelectric element. When the electric power was 6.4 W, a 24.9% temperature decrease was achieved at the lowest temperature of the metal-core printed circuit board (76.2℃) through forced heat dissipation. Based on the results, the arithmetic lifespan of the LED light could be extended by 100.5%.


Keywords: COB LED module, Street LED, Forced heat dissipation, Thermoelectric module (TEM), Heat sink

References


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*10.*	Han, J. H., Im, K. H., Cho, Y. T., 2019, Forced Heat Dissipation of 30W COB LED with Use of Thermoelectric Modules, Journal of the KSMTE, 28:4 218-223.

Young-Tae Cho

An associate professor at the Dept. of Basic Science, College of Engineering, Jeonju University, Jeonju, Korea.He is interested in LED heat dissipation, infrared thermography nondestructive testing and evaluation of matrials.

E-mail: choyt@jj.ac.kr