| 摘要 |
PROBLEM TO BE SOLVED: To provide a device capable of being effectively ventilated by making use of a natural air current and having a simple and a rigid structure as ventilating fittings used for venting by providing it to a window of a building, a doorway or the like. SOLUTION: In automatic ventilator attached fittings installed in the window of the building, the doorway or the like, louver attached opening sections and shutters for shutting the opening sections are provided to the upper position and the lower position, and as the louver, when a wind is not high, both up and down vanes are in an approximately horizontal state by weight balance, when the wind is high, an automatic opening and shutting louver constituted so as to make a shutting state for both up and down vanes to overlap each other by pivoting with wind force.
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