PROBLEM TO BE SOLVED: To provide an air cleaning device that can suppress adverse effect to a human body without the need of decomposing ozone.SOLUTION: The air cleaning device includes: a filter medium constituted of a fiber body having a plurality of fibers and collecting particulates in the air and an ozone generation device for generating ozone in the air by radiating an ultraviolet ray. The fiber has water repellency. The ozone generation device radiates an ultraviolet ray with such a radiation amount that an ozone concentration of the air passing through the filter medium becomes 0.1 ppm or less.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2019,JPO&INPIT【課題】オゾンを分解する必要がなく、人体への悪影響を抑制できる空気清浄装置を提供する。【解決手段】空気清浄装置は、複数の繊維を有する繊維体からなり、空気中の微粒子を捕集する濾材と、紫外線を照射して空気中にオゾンを発生させるオゾン生成装置と、を備える。前記繊維は撥水性を有している。前記オゾン生成装置は、前記濾材を通過した空気のオゾン濃度が0.1ppm以下となる照射量で紫外線の照射を行う。【選択図】図1