PROBLEM TO BE SOLVED: To provide an indoor sterilization device that sterilizes bacteria and virus flooding and floating in a room as well as that can also reduce the influence on the human body.SOLUTION: An indoor sterilization device 1 comprises: a housing 2； an attachment unit for attaching the housing 2 to a wall surface at a location higher than the height of a person； a light source 3 provided in the housing 2 and irradiating ultraviolet rays； and a restriction member 4 on at least one surface of the housing 2 for restricting the irradiation range of ultraviolet rays irradiated by the light source 3.SELECTED DRAWING: Figure 4
