To provide a duct to or from which a fan, a filter, etc. can be easily attached or removed.
Ribs 38, 38 for positioning a fan 50 are provided in a protruding manner inside the duct 37. Coming-off preventing protrusions 39, 39 are provided, which protrude inside the duct from the bottom surface and the ceiling plane of the duct. The coming-off preventing protrusions 39, 39 have elasticity and can be deformable to the state that coming-off prevention is released, parallel to the surface of the duct by being pressed. When the fan 50 is mounted to the duct 37, the fan 50 is inserted into the opening of the duct (the edge face on the right in the illustration). The coming-off preventing protrusions 39, 39 are deformed elastically to allow the fan 50 to move to the back where it is immovably supported by the ribs 38, 38 and the coming-off preventing protrusions 39, 39.
ISHII HIROSHI
SHIRAKI TAKAMASA
YAMADA MASAHIKO
ANDO TAKAYUKI
KAWAMURA KAZUSHIGE
SHIMIZU KEISUKE
| JPH02132245U | 1990-11-02 | |||
| JPH0792862A | 1995-04-07 | |||
| JP2005024984A | 2005-01-27 | |||
| JP2002082592A | 2002-03-22 | |||
| JPH10268735A | 1998-10-09 | |||
| JPH07140834A | 1995-06-02 | |||
| JPH11132199A | 1999-05-18 |