| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an inexpensive ventilation filter having superior capability for efficiently removing pollen, earth and sand, dust, rain droplets and the like, and low in pressure loss, and ventilation fittings. <P>SOLUTION: There is provided the ventilation filter in which a plurality of three-dimensional fabrics which are cut in narrow width shapes are laminated, cut faces of the laminated three-dimensional fabrics are made to be filtering faces, and the pollen, earth and sand, dust, rain droplets and the like which enter a room together with an outside air can efficiently be captured, and which is suited for natural ventilation. There are also provided the ventilation fittings using the ventilation filter. <P>COPYRIGHT: (C)2013,JPO&INPIT |
