LED素子を冷やす : 電磁放射体の応用(<特集>LED照明を支える要素技術)

概要

論文の詳細を見る
Light Emitting Diode (LED) is very weak in the case when it is exposed to the hot environments. It may be predicted that the deterioration of diode may occur in atmosphere more than 80 ℃ and the performance and lifetime of LED considerably go down under such high temperature atmosphere. So, it will be strongly requested that the diode temperature always has to maintain less than 80 ℃. As the one of provision for the heat release problem of LED, the author has developed the radiation cooling technique for releasing much quantities of heat generated from LED using radiation materials having with 0.94 and 180 W/mK in spectrum emissivity and thermal conductivity, respectively. The radiation materials developed for the study also involve the resonance frequency with the wave number emitting from diode elements. At least, the radiation cooling effect of radiant materials makes it possible to decrease the diode temperature within the range of approximately 10%, comparing with that in the case without radiant materials. This fact indicates that the radiant materials are very useful for releasing much quantities of heat generated from diode.
2012-12-01