Multiple flash unit for photography - has lamps on printed circuit board with break switches formed as thin regions on board to be triggered by heat from lamps

摘要

The multiple flash light for photography, consists of several flash lamps mounted on a printed circuit board held inside a housing. Break switches are set into the circuit board and face the lamps. The switches are triggered by the heat radiated by the lamps as they flash. Each switch consists of a thin region of the circuit board. A conductor is applied to this region and is crossed by a slot. The switches are located on the opposite side of the board from the lamps and may be made at the same time as the circuit board.