Patent ID: 7884296

Claim:
A side-surface light-emitting unit comprising: a light guiding body which is disposed along side surfaces of one or more key switches and is configured to emit light toward the side surfaces of the one or more key switches which are disposed to extend in a direction; at least one light source each including a light emitting surface disposed to face a light receiving surface which is at least one end of the light guiding body, and a sheet member covering the one or more key switches, the light guiding body having an elongate shape of a rectangular shape in section, the light emitting surface of the at least one light source and the light receiving surface of the light guiding body having substantially a same size, the light guiding body including an emission surface provided on at least one side surface facing the key switches, at least upper and lower surfaces of the light guiding body being optically shielded, the sheet member being supported on the upper surface of the light guiding body.