Title:
VENTILATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/103990
Kind Code:
A1
Abstract:
A device body 10 of a ventilation device comprises an inside first main wall 12a that has a first ventilation opening 12x, and an outside second main wall 15a that has a second ventilation opening 15x. The ventilation device further comprises a first and second operation plate 20, 30 that are supported in the device body 10 so as to be able to rotate, and a first and second spring 26, 36 that bias the first and the second operation plate 20, 30 in a direction to separate, respectively, from the first and second main wall 12a, 15a. First and second packing 25, 35 that are elastic and permeable to air are mounted, respectively, on the first and second operation plate 20, 30. When the outside is at positive pressure during strong winds, the first operation plate 20 approaches the first main wall 12a due to the wind pressure from the outside and ventilation is performed through only the first packing 25. When the outside is at negative pressure during strong winds, the second operation plate 30 approaches the second main wall 15a due to the wind pressure from the inside and ventilation is performed through only the second packing 35.
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Inventors:
ONODERA KINYA (JP)
SATO ISAO (JP)
SATO ISAO (JP)
Application Number:
PCT/JP2015/085043
Publication Date:
June 22, 2017
Filing Date:
December 15, 2015
Export Citation:
Assignee:
SAHARA CO LTD (JP)
International Classes:
E06B7/10; F24F7/04
Foreign References:
| JPS62108728U | 1987-07-11 | |||
| JPH0486889U | 1992-07-28 | |||
| JPH10220118A | 1998-08-18 |
Attorney, Agent or Firm:
WATANABE Noboru et al. (JP)
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