PROBLEM TO BE SOLVED: To provide an air cleaning device capable of inactivating bacteria and viruses collected by a collection filter and a photocatalyst-carrying filter and efficiently using the ultraviolet rays. SOLUTION: An air cleaning device 1 includes a collecting filter 52 that collects dust, a first ultraviolet light emitter 60A that irradiates the collecting filter 52 with ultraviolet light UV1 having a first wavelength, and ultraviolet light UV1 having a first wavelength. A photocatalyst-carrying filter 51 that carries a photocatalyst exhibiting photocatalytic activity and collects dust, and the collection filter 52 transmits ultraviolet light of the first wavelength and transmits ultraviolet light UV1 of the first wavelength that passes through the collection filter 52. Is irradiated to the photocatalyst-carrying filter. [Selection] Figure 1【課題】 捕集フィルタ及び光触媒担持フィルタに捕集された細菌やウィルスを不活化し、当該紫外線を効率よく用いることができる空気清浄装置を提供する。【解決手段】 空気清浄装置１は、塵埃を捕集する捕集フィルタ５２と、捕集フィルタ５２に第１波長の紫外線ＵＶ１を照射する第１紫外線発光体６０Ａと、第１波長の紫外線ＵＶ１により光触媒能を発揮する光触媒が担持され塵埃を捕集する光触媒担持フィルタ５１と、を備え、捕集フィルタ５２は第１波長の紫外線を透過し、捕集フィルタ５２を透過する第１波長の紫外線ＵＶ１は前記光触媒担持フィルタに照射される。【選択図】 図１
