| 摘要 |
The present invention comprises essentially two parallel and aligned ranks of compound plates (1) which are pivoting and rotating around preferably vertical cylindrical bearings (2), the plates being rectangular in plane view but having a profile which may be rectilinear, polygonal or arcuated, the plates (1) being placed two by two in face to face relationship and at uniform spacements so as to fully cover the gap (or partially cover the gap), each rank of plates being controlled or coordinated by one rack device or by combined levers which similtaneously actuate the plates to turn at 0 DEG or 180 DEG in each rank; rotation at 0 DEG being possible as the plates are in face to face relationship causing closure of the gap and touching themselves by their upper ends, that is closing the coverage and fully covering the area; rotation at 90 DEG being possible as the plates are parallel to the longitudinal direction of the rank, forming two vertivcal walls of plates (1); and rotation at 190 DEG being possible as the plates are in opposition and thus completely opening the coverage and fully releasing the area to the sun and to the wind; between 0 DEG and 180 DEG the plates may be placed at any intermediary position, and each rank of plates having its collective control and if necessary, both controls may be coordinated in a single one which may be manually or motor-driven, and then achieving the consequent instantaneous response.
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