DEVICE AND OPERATION DEVICE

A device includes a housing; a substrate provided inside the housing; a light emitting object mounted on one side of the substrate; and an elastic sheet covering the one side of the substrate and the light emitting object, to guide light from the light emitting object. A through hole is formed in the housing corresponding to the one side of the substrate. The elastic sheet has a mirror part at a portion on the surface corresponding to the through hole, for totally reflecting light transmitting through an inside of the elastic sheet.