Charge control device in a flash device for a camera

Claim 1

A flash device adapted to be operatively associated with a camera which automatically carries out a sequence of operations including initiation of photography causing depression of a shutter button and opening of a shutter, and a finishing operation of the photography causing closing of the shutter, returning of the shutter button and take-up of one frame of film, the flash device comprising: (a) a main capacitor for storing energy for generating flash light; (b) means for supplying direct current voltage; (c) a voltage convertor connected to said voltage supplying means and applying a boosted voltage of said direct current voltage to said main capacitor, the voltage convertor including a booster transformer and an oscillation circuit for applying an alternating current voltage to a primary winding of the transformer, the oscillation circuit being energized until said main capacitor is sufficiently charged; (d) actuating switch means for triggering said oscillation circuit to intitiate oscillation thereof, the switch means being previously operated prior to said sequence in the camera; and (e) re-actuating circuit means for triggering said oscillation circuit to initiate oscillation thereof, the reactuating circuit means being operatively associated with said finishing operation of said sequence.