PROBLEM TO BE SOLVED: To provide an ultraviolet radiation air sterilizer in which, an air flow rate of air for sterilization is set from low speed to high speed, which is compact, and which can sterilize efficiently with a wide range of a flow rate.SOLUTION: An ultraviolet radiation air sterilizer comprises: a duct 4 in which air for sterilization passes an ultraviolet lamp 6 disposed on a center of the duct 4. The duct is divided into half at a plane including a central line of an axial direction of the duct. On respective divided internal spaces, one set of plural air introduction plates is disposed in parallel. Respective plural air introduction plates 8-1 to 8-n, 9-1 to 9-n of the first set and second set are arranged with an angle of α and minus α with respect to a plane being orthogonal to the division plane. These air introduction plates are arranged so that plural X-characters are continuous in view from a direction where views the division plane by a direct light viewing angle. In addition, on both side space parts avoiding respective ultraviolet lamps in plural rhombus spaces formed by these air introduction plates, partition plates 10-1a to 10-(n+1)a, 10-1b to 10-(n+1)b are respectively provided.SELECTED DRAWING: Figure 6COPYRIGHT: (C)2016,JPO&INPIT【課題】コンパクトで、殺菌する空気の流速が、低速から高速まで、広い流速の範囲で効率良く殺菌できる紫外線照射空気殺菌装置の提供。【解決手段】殺菌する空気が流れるダクト4を有し、紫外線ランプ6がその中心部に設けられ、ダクトはその軸方向の中心線を含む平面で2分割され、2分割されたそれぞれの内部空間に複数枚の導風板の1組が平行に配置されて設けられ、第1組、第2組の複数枚の導風板8-1~8-n、9-1~9-nの各々は分割平面に直交する平面に対して角度α、マイナスαをもってそれぞれ配置され、これらの導風板は分割平面を正面視する方向から見て複数のX字が連なるようにして配置され,分割平面上であってこれらの導風板によって形成される複数の菱形の空間の各々の紫外線ランプを避けた両側の空間部分にそれぞれ仕切り板10-1a~10-(n+1)a、10-1b~10-(n+1)bが設けられる紫外線照射空気殺菌装置。【選択図】図6
