VENTILATING HOLE TOOL
The ventilation opening tool attached to the ventilating hole which communicates indoor and the outdoors.
According to the composition of the present invention, the indoor air can be duly discharged to the outdoors.
Construction material
PROBLEM TO BE SOLVED: To provide a ventilating hole tool for discharging inside air to the outside without stay while preventing the intrusion of small animals and rainwater to the inside.SOLUTION: The ventilating hole tool having a cylindrical body and a hood fixed to an outside end of the cylindrical body is disposed in a ventilation hole connecting the inside and the outside of a building wall. An inner cylinder constituting the cylindrical body includes a propeller-shaped communicating hole rotating counterclockwise as viewed from the inside, and the communicating hole also orients the flow of air flowing into the ventilating hole tool to the outside without a change as much as possible.
31-May-2010
Japanese Patent No. 4782879
License / Sales
日本
