Lens-fitted photographic film package and flash unit

A flash unit for a lens-fitted photographic film package having a pair of gripping projections on both horizontal sides of a taking lens system in a front wall thereof, said flash unit comprising:

• a flash circuit having a capacitor;
• a charge switch for charging said capacitor;
• a light projector which discharges said capacitor to flash when a synchro-flash signal is supplied to said flash circuit;
• and
• a switch operating member for turning said charge switch on, said switch operating member being formed as at least a segment of one of said gripping projections.

A flash unit for a camera having a shutter mechanism which includes a shutter blade that pivots to open and close an exposure opening, and a shutter driving member, a first end of said shutter driving member being disposed in a path of an actuating member movable upon a shutter release operation, and a second end of said shutter driving member being engaged with said shutter blade, said shutter driving member causing said shutter blade to open and then close said exposure opening when said first end of said shutter driving member is actuated by said actuating member, said flash unit comprising:

• a flash circuit which causes said flash unit to flash upon receipt of a synchro-flash signal;
• a synchro-flash switch for generating said synchro-flash signal, said synchro-flash switch having first and second contact segments extending toward said shutter mechanism;
• and
• an arm on said shutter driving member, said arm depressing said first contact segment into contact with said second contact segment when said shutter blade fully opens said exposure opening, thereby turning said synchro-flash switch on to output said synchro-flash signal.