According to one embodiment, an electronic device includes a housing including a recess portion and an ornamental lamp unit fit into the recess portion, wherein the ornamental lamp unit further includes a printed wiring board provided at a bottom of the recess portion, a light source mounted on the printed wiring board, and a first panel fixed to the housing such as to partition an outer environment and an inner side of the recess portion from each other and having translucency, and the first panel further includes a first surface set to face the light source and including a plurality of projection portions which diffuse light from the light source, and a second surface provided on an opposite side to the first surface, the second surface provided with a one-way mirror which transmits light from the light source and reflects light from the external environment.