Patent ID: 8970117
Filing Date: 2015-03-03
Classification: G03B,H04M,H04N,H05B,Y02B

Abstract:
1. A light emitting element drive device comprising: a light emitting element; a drive unit for driving the light emitting element; an electricity storage element capable of storing electric power; a battery power supply capable of supplying electric power to the electricity storage element; and a boost chopper circuit having an inductor, for boosting voltage by opening and closing a switching element, wherein the drive unit is switchable between: a storing state in which electric power from the battery power supply is stored in the electricity storage element, wherein electric power from the battery power supply is prevented from being supplied to the light emitting element; a first discharging state in which the electric power stored in the electricity storage element is supplied to the light emitting element, wherein electric power from the battery power supply is prevented from being stored in the electricity storage element; and a second discharging state in which electric power from the battery power supply is boosted by the boost chopper circuit and is supplied to the light emitting element, wherein electric power from the battery power supply is prevented from being stored in the electricity storage element.