| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fire door with ventilation function, which can perform ventilation from an entrance door while maintaining certain fireproof performance, protects privacy without letting an outdoor side opening and an indoor side opening faced with each other, and prevents fire from spreading when fire occurs. <P>SOLUTION: A door body provided at an outdoor entrance includes an air introduction port in an outdoor side, an air supply port in an indoor side, and an air ventilation flue for connecting the outdoor side and the indoor side to introduce air from the air introduction port in the outdoor side to the air supply port in the indoor side; if the air introduction port in the outdoor side and the air supply port in the indoor side are mutually installed so that a distance between mutually nearest portions thereof is two times or more a thickness dimension of the door when projecting them on a virtual same plane, privacy is protected, and if the distance is five times or more the thickness dimension of the door, fire spreading is suppressed when fire occurs. <P>COPYRIGHT: (C)2012,JPO&INPIT |
