Photoflash lamp array having shielded switching circuit

Details Photoflash lamp array having shielded switching circuit Photoflash lamp array having shielded switching circuit

G - Physics

03

B

240/77

G03B 15/04 (2006.01) H05K 1/02 (2006.01)

Patent

CA 1058591

ABSTRACT OF THE DISCLOSURE A flash lamp array having a plurality of lamps positioned over a side of a circuit board having thereon circuitry for sequentially flashing the lamps. A metal shield, in the form of a sheet of metal foil or foil-covered paper, is positioned adjacent to the other side of the circuit board and is in contact with a common electrical run on the circuit board. Strips of radiation-sensitive plastic are positioned between the shield and the circuit board to func- tion as electrical insulation, and also function as flash indicators by distorting due to radiation from an adjacent flashing lamp. Preferably, a conductive reflector member is positioned between the lamps and the circuit board and is connected to the common electrical circuit run.

251491

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