| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve safety in a movable range of a fire door and a shutter curtain when closing the fire door and the shutter curtain automatically according to an input of an alarm signal, in an opening/closing body device including the fire door equipped with a guide rail and the shutter curtain closed along the guide rail of the fire door. <P>SOLUTION: Before the fire door rotationally moves, attention is called by a sound, light, etc. to people around that the fire door will rotationally move. As a result, the attention of people in the rotational movement range of the fire door or in the closing operation range of the shutter curtain is called so as to enhance improvement in safety. <P>COPYRIGHT: (C)2010,JPO&INPIT |
