| 摘要 |
PROBLEM TO BE SOLVED: To provide a silencing ventilation device capable of improving sound insulating properties without increasing air flow resistance in a room.SOLUTION: A silencing ventilation device is comprised of a silencing container 1 and a sound diminishing device 2. The silencing container 1 is a hollow container with a sound absorbing material affixed in its inner surface. The sound diminishing device 2 is comprised of an air supply tube 22 and a resonance sound absorbing material 21. The air supply tube 22 is a tube body with both end penetrated. At an end of a silencing container 1 side of the air supply tube 22, the resonance sound absorbing material 21 is positioned. The resonance sound absorbing material 21 has a tubular hollow part 21a having a substantially same inner diameter with an inner diameter of the air supply tube 22. A center axis of the air supply tube 22 and a center axis of the tubular hollow part 21a are disposed while the axes are matched. |
