| 摘要 |
PROBLEM TO BE SOLVED: To provide a ventilation device capable of opening and closing a ventilation window by one operation means.SOLUTION: There is provided a ventilation device which comprises: a window frame 1 provided in a structure; a ventilation window 2 which has a supported part supported by the window frame 1 at the upper end part and is provided to be freely opened/closed around the supported part with respect to the window frame 1; a support arm 3 which extends at a position below the supported part of the ventilation window 2 to a position where the support arm is protruded from the window frame 1 toward an opposite side to the side where the ventilation window 2 is provided; an operation rod 4 which is pivotally supported at a position of protruding from the window frame 1 of the support arm 3 and can be moved vertically; and a guide member 5 which guides the movement of the operation rod 4 at a position opposite to the side where the ventilation window 2 of the window frame 1 is provided and can be engaged at a predetermined position of the operation rod 4 to fix the opening/closing angle of the ventilation window 2. |
