| 摘要 |
<P>PROBLEM TO BE SOLVED: To easily attach and detach a filter used in a ventilation device such as an air feeding device and suppress the drop-down of water into a room even when snow adhered to the filter melts when used in a cold district. <P>SOLUTION: This filter is constituted in such a way that a pair of knob pieces 14c are provided in an elastic frame 14b provided with a filter member 14a extended, and the elastic frame 14b and the filter member 14a are contracted and deformed in the direction of the face of the filter member 14a when pinching the knob pieces 14c to bring them close to each other to reduce the size of the filter 14 as a whole. Consequently, this filter can be attached to and detached from the ventilation device easily. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
