LIGHTING DEVICE AND HEAD LIGHT FOR VEHICLE USING THE SAME

摘要

The present invention relates to a lighting device and a head light for a vehicle using same, including a light-emitting device array portion where a plurality of light-emitting device strings in which a plurality of light-emitting devices are connected in series are connected in parallel; a first detection unit that is connected to an output port of the light-emitting device array portion and detects the opening of one of the light-emitting device strings; a driving unit that supplies driving power supply to the light-emitting device array portion; a second detection unit that detects the opening and short circuit between an input port and the output port of the light-emitting device array portion; and a blocking unit that connects an external power supply applied to the driving unit to an input port of the driving unit and blocks the power supply to the driving unit in case where the opening is detected by the first detection unit or the opening or short circuit is detected by the second detection unit. According to the present invention, the intensity of radiation can be maintained to be constant and damage can be prevented. [Reference numerals] (1100) Power supply unit; (1210) Blocking unit; (1220) Driving unit; (1230) Second detection unit; (1310) Light-emitting device array portion; (1320) First detection unit