A stroboscope device can rotate a light emitting part about at least two axes by a drive mechanism. The drive mechanism includes a drive gear that rotates by a drive force transmitted from a drive source, a sun gear engaged with the drive gear, a planet gear engaged with the sun gear, a support member that rotatably supports the sun gear and the planet gear and is oscillatable around a rotation axis of the sun gear, at least two drive systems for rotating the light emitting part about at least two axes, and a positioner for restricting oscillation of the support member in a releasable manner in a state that the planet gear is engaged with one of transmission gears. The drive systems are disposed such that their transmission gears engage with the planet gear at positions different from one another with oscillation of the support member.