PROBLEM TO BE SOLVED: To provide a portable ultraviolet sterilization device capable of reducing radiation of ultraviolet light to areas other than an area where radiation of the ultraviolet light is required.SOLUTION: The ultraviolet sterilization device comprises: a housing comprising a bottom face, side faces, and an upper face a face light source disposed in the housing and emitting ultraviolet light to the upper face of the housing plural keys arranged on the upper face so that the keys can be depressed, which can transmit the ultraviolet light and a shutter mechanism disposed between the keys and the face light source, and transmitting the ultraviolet light from the face light source to the key only when the key is depressed.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】必要な領域以外への紫外線の照射を低減することが可能な、携帯型の紫外線殺菌装置を提供する。【解決手段】紫外線殺菌装置であって、底面、側面、及び上面を有する筐体と、筐体中に配置され、筐体の上面に向けて紫外線を出射する面光源と、上面に押下可能に配列された、紫外線を透過する複数のキーと、キーと面光源との間に配置され、キーが押下されたときのみ面光源からの紫外線をキーに向けて通すシャッター機構とを備える、携帯用紫外線殺菌装置。【選択図】図1
