| 摘要 |
PURPOSE: An emergency door displaying device of a fireproof shutter is provided to confirm a location of emergency door easily by irradiating the location using a laser which is not affected by smoke in case of sensing the operation of fireproof shutter. CONSTITUTION: An emergency door displaying device of a fireproof shutter comprises: a fireproof shutter (100); a driving part (300); a laser irradiation means (400), and a control unit (500). The fireproof shutter is maintained under a winding condition inside of housing (200) positioned on the ceiling of a building for a normal situation. The winding condition is canceled in case of fire, when the winding condition is canceled, an emergency door (110) is located on a part, and a detection target (130) is equipped. The detection target is a target of a closure detection sensor (210) detecting the cancel of the winding condition. The detection target is positioned within the detecting range of the closure detection sensor when the winding condition is completely canceled. The driving part winds the fireproof shutter for normal times, and operates to cancel the winding condition in case of fire. When a closure of the fireproof shutter is senses by the closure detection sensor, the laser irradiation means irradiates laser having the same form with the emergency door on the emergency door, and an emergency door marker symbol on the top end of the emergency door. |
