Patent ID: 6339295
Filing Date: 2002-01-15
Classification: H05B,Y02B

Abstract:
A light source lighting device for lighting a light source to be mounted on a vehicle, comprising:an inverter for converting a first selected portion of a direct current from a vehicle-mounted battery into an alternating current; current adding means for adding the direct current from the vehicle-mounted battery and the alternating current generated by the inverter, to supply the light source with a sum of direct and alternating electric current; and a time delay circuit, located adjacent to the inverter, that delays delivery of the alternating current to the current adding means by a time interval, having a selected length t0, relative to a time that the direct current is first delivered to the current adding means, whereby the light source (1) receives a reduced direct-current-only contribution during a first selected time interval and (2) receives an increased contribution of the sum of the alternating current and the direct current during a subsequent second time interval.