철도 차량용 LED 헤드라이트 적용 및 개선

The aim of head light is assist and warn to drivers, other train"s drivers and passenger of platform. At the last time, the head light of sealed beam type and HID (High Intensity Discharge) had been applied at the rolling stock. But the head light of sealed beam type has a lot of problem like a lifetime, capacity of power. In case of HID lights, this light gives to drivers the red-eye effect when full duplex trains are passed and when the train will be arrived at the station, this light gives to passenger waiting in station the dazzling effect. Also those lights required the high voltage module and control module to operate the high discharger and additional space and/or cost for installation. The LED head light improved for lifetime and capacity of power should be changed from the sealed beam head light. Therefore, this paper is mentioned the development and application of LED head light. This paper is mentioned the application case and improvement of LED headlight for rolling stock.