ULTRAVIOLET SCREENING FILTER CARTRIDGE

摘要

PROBLEM TO BE SOLVED: To prevent the irradiation of a member arranged on one surface side with ultraviolet rays from an ultraviolet irradiator arranged on another surface side by providing a shading member. SOLUTION: The ultraviolet screening filter cartridge has a honeycomb- shaped filter body having a large number of air flowing perforations and a cartridge frame body 64 for housing the filter body and is arranged in an air flow channel so that one surface among opposed surfaces permitting air to pass is opposed to an ultraviolet lamp 37a. The cartridge frame body 64 has an ultraviolet shield member having the shape corresponding to the projection surface of the ultraviolet lamp 37a at the position corresponding to projection surface of the ultraviolet lamp 37a on the surface on the side opposite to the ultraviolet lamp 37a.