Journal of the Korean Society of Manufacturing Process Engineers (한국기계가공학회지)

The Korean Society of Manufacturing Process Engineers (한국기계가공학회)
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A Study on Cooling Characteristics of the LED Lamp Heat Sink for Automobile by Forced Convection

강제대류에 의한 자동차용 램프 방열판의 냉각 특성에 LED 관한 연구

  • Yang, Ho-Dong (Department of Automobiles, Chosun College of Science & Technology) ;
  • Yoo, Jae-Young (Gwangju Service Center, Hyundai Motor Company) ;
  • Park, Seul-Hyun (Department of Mechanical System & Automotive Engineering, Chosun University)
  • 양호동 (조선이공대학교 자동차과) ;
  • 유재용 (현대자동차 광주서비스센터) ;
  • 박설현 (조선대학교 기계시스템미래자동차공학부)
  • Received : 2018.11.22
  • Accepted : 2018.12.05
  • Published : 2018.12.31
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Abstract

Automotive headlamps have been continuously developed as one of the most important devices for securing the driver's view, and the LED lamps are getting popular in recent years. However, in case of the LED lamps, because the heat generated by the LED lamps are too high, it shorten the product life and lower the LED efficiency. Therefore, this study was investigated the cooling characteristics of the LED lamp heat sink for automobile by forced convection for LED heat generation control. In order to analyze the cooling characteristics of the heat sink, the temperature distribution results were investigated through the experiment and computational analysis under the increase of the air flow velocity, and the convective heat transfer coefficient was obtained. Also, convective heat transfer coefficient was calculated by the theoretical formula under the same condition and compared with experimental and computational results. From the result of this study, as the air flow velocity around the heat sink fins increased, the convective heat transfer coefficient significantly increased, confirming the improvement in the cooling effect.

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References

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