OPENING AND CLOSING STRUCTURE OF SLAT, OPENING AND CLOSING LOUVER AND CABINET

PROBLEM TO BE SOLVED: To provide a simple opening and closing structure of a slat board as a first subject, an opening and closing louver (louver door) provided to a ventilating opening capable of being manufactured at a low cost without being required for any maintenance as a second subject and a cabinet having the opening and closing louver in the ventilating opening as a third subject. SOLUTION: The opening and closing structure of the louver board is so constituted that a spur gear 3b with a pivot of the slat 3 as the center is provided to the slat 3 for supporting both ends in a rotatable manner, a screw thread of a feed screw 4 for supporting both ends in a rotatable manner is fitted to the spur gear 3b in a state for a screw shaft of the feed screw 4 to incline at an angle equivalent to a lead angle of the feed screw 4 from the direction at right angles to the pivot and that the slat 3 is opened and closed by engaging with the rotation around the screw shaft of the feed screw 4. The opening and closing louver 1 is so constituted that a plurality of slats 3 mounted to a frame body 2 provided to the ventilating opening are opened and closed by making use of the opening and closing structure of the slats.