| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilation system capable of preventing fire spread from another room with a simple structure without construction to lower a ceiling and without concern about cost-up.SOLUTION: A ventilation system includes air intake/exhaust means for sucking and exhausting air, an air intake/exhaust body 9 disposed on a ceiling or a wall surface of a room 7 at an outer wall 5 side and incorporating the air intake/exhaust means, a duct 11 connected to the air intake/exhaust body 9, and extended from the ceiling of the room 7 at the outer wall 5 side to a ceiling of another room 7, an air intake/exhaust grille 15 mounted on a ceiling 13 of the other room 7 and connected to a tip of the duct 11, and blocking means 23 disposed in a hole 21 of a floor joint 19 of the ceiling, connected to the duct 11 extended to the other room 7, and bringing a non-ventilation state at a prescribed temperature.SELECTED DRAWING: Figure 1 |
