To keep the versatility of a stroboscopic device and to compactly increase circuit parts.

A stroboscopic unit 17 is constituted of a stroboscopic main base plate 17a where the circuit parts constituting the stroboscopic device performing constant light emission are mounted, and a stroboscopic sub base plate 17b where the circuit parts constituting a stroboscopic light control circuit are mounted. When the base plate 17b is inserted through the terminal 40a of a main capacitor 40, it is soldered at this part. The base plate 17b is attached nearly perpendicularly to the base plate 17a, and the unit 17 becomes an automatic light control stroboscopic device. In the case of detaching the base plate 17b, the base plate 17b is detached from the base plate 17a together with the capacitor 40.