| 摘要 |
PROBLEM TO BE SOLVED: To clean indoor air without generating noise trouble at a low cost by setting a double structural glass window so as to convect air between a gap between the glass windows and the inside of a room, and providing a breathable photo-catalytic sheet on the air passage of the glass window. SOLUTION: An outside glass window 1 and an inside glass window 2 are set, and gaps 21, 21 are provided on both the right and left end sides of the window 2 so as to convect air between the gap between the windows 1, 2 and the inside of a room. In addition, a breathable photo-catalytic sheet 3 is provided in the gap between the windows 1, 2. Thus, an optical analyst is excited by the ultraviolet ray of sunlight incident from the outside glass window 1, a radical occurs from oxygen and moisture in the air coming into contact with the surface of the sheet 3 in an excitation state, and an organic substance, a microorganism or the like adhered to the surface is oxidized and decomposed by the radical. Furthermore, the air between the windows 1, 2 is heated by sunlight to ascend in the gap between the windows 1, 2 so as to produce convection.
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