탄소나노튜브 도료를 적용한 LED headlamp용 Heat Sink의 경량화

Recently, application of LED is an increasing trend on automobile headlamp part as a new light source. The LED has many merits to apply automobile field such as high energy efficiency, eco-environment, strong durability and easyadaptable design. However, even though these many benefits, it is not easy to apply to headlamp due to heat release process. Most important process on LED is how heat release system can be organized. A poor handling of heat release is harmful to LED, finally it bring about shorten durability. To deal with heat release, some functional parts such as pan, heat sink are added. These added parts that were not considered in halogen lamp system make an increasing lamp module weigh. In this study, to forbid an increasing lamp module weight and to aid heat release, we used carbon nano tube coating on surface of heat sink. As a result, we expected that it could be reduced about 10 % heat sink weight using carbon nano tube coating.