| 摘要 |
PROBLEM TO BE SOLVED: To cope with diversity of directions of blown split flows in ventilation by adding a simple component, in a ventilating hole composed of a cylindrical body 1 having an insertion cylindrical section 11 inserted and fitted to a ventilation duct of a building, and a flange section 12 disposed on an outer periphery of an end of the insertion cylindrical section, and a ventilator body provided with long windows disposed in parallel with each other, and having a ventilation window section 21 configured by bending blade plates of long window edges in a prescribed direction and a collar section 22 disposed on an outer periphery of the ventilation window section and connected to the flange section. SOLUTION: An auxiliary ventilation window section 14 configured by bending the blade plates in the desired direction is disposed in a state of closing a part of an opening section of the insertion cylindrical section 11. COPYRIGHT: (C)2011,JPO&INPIT
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