The present invention is to provide a better design, and a uniform and bright lighting to a cover lens. A lamp holder holds a lamp L and a lamp bezel holds the lamp holder. The lamp bezel is attached to a roof of a vehicle. The cover lens covers a front side of the lamp bezel and the lamp holder. A part of the cover lens is embossed so as that the lamp holder is hardly visible through the cover lens from a front side of the cover lens. The part is thinly embossed as approaching to a periphery of the part in order to increase a light transmittance.