To provide a small-sized stroboscopic structure wherein an xe (xenon) tube and a reflective shade are surely brought into contact with each other.

An optical member is provided with claws and these claws are fitted into holes disposed at a casing to house light source means consisting of a light emitting tube and a reflective shade, by which the light source means, the optical member, and the casing are integrally configured. An elastic member is arranged between the light source means and the light emitting tube, and the light emitting tube is pressed to the reflective shade.