Patent ID: 8591561

Claim:
A light emitting device, comprising: a device body, a light-emitting unit removably attached to the device body, and a locking unit for locking the light-emitting unit to the device body; wherein the device body comprises: an electric power supplying part, a first connector electrically connected to the electric power supplying part, an electric power switch that switches on and off an electric power supplied from the electric power supplying part to the first connector, and a release member for releasing the lock of the light-emitting unit by the locking unit; the light-emitting unit comprises: a light emitting body emitting a light, and a second connector electrically connected to the first connector when the light-emitting unit is locked to the device body, and feeding electric power from the first connector to the light emitting body; and the light emitting device further comprises: a release restriction mechanism including a release restriction member, which is positioned at a release prohibiting position by the electric power switch in a state where the electric power switch is at a power-on position where the electric power supplying part feeds the electric power to the first connector, wherein the release restriction member positioned at the release prohibiting position restricts movement of the release member such that the lock of the light emitting unit is not allowed to be released by the release member, and a power-on restriction mechanism including a power-on restriction member, which is positioned at a power-on prohibiting position in a state where the light-emitting unit is detached from the device body, wherein the power-on restriction member positioned at the power-on prohibiting position restricts movement of the electric power switch such that the electric power switch is not allowed to be moved from a power-off position to the power-on position, and wherein the power-on restriction member is moved by the locking unit.