| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a tight structure of a shutter plate, as a further improvement, by preventing the shutter plate from being displaced by means of a magnet or by using a sealing member such as flocked fiber, felt or rubber, although it is greatly useful that a shutter is shut tightly between a shutter frame and a shutter plate or between shutter plates while the shutter is closed, conventionally, and the tight state is secured for the purpose of: the penetration prevention of rainwater, outside air, humidity, insects or the like; the leakage prevention of inside air; the escape prevention of insects; or energy saving or the like. <P>SOLUTION: A shutter is provided with a plurality of shutter plates to the shutter frame, and a plurality of crosspieces, on which the shutter plates abut when the shutter plates are closed, is provided between side face frame parts of the shutter frame. A sealing member having a contact surface with fin-like projections which comes into contact with the reverse surface of the shutter plate, is provided at a free end of each crosspiece and the side face contact places of the shutter plate sectioned by a pair of crosspiece at the side face frame part. <P>COPYRIGHT: (C)2013,JPO&INPIT |
