| 摘要 |
PURPOSE:To surely detect even a human being in the stationary state by allowing a human detecting sensor dependent upon heat rays to sweep a detection area and relatively moving the human being. CONSTITUTION:A human detecting sensor 2 which detects the temperature difference between the human being and the surface in a room is attached to a bracket 4 freely shakably and axially supported through a supporting shaft by a lintel part 3 of a building shutter 1. One end of a link 5 is axially supported by the bracket 4, and the other end is axially supported by a cam plate 7 connected to the output shaft of a synchronous driving motor 6. When the motor 6 is driven to rotate the cam plate 7, the bracket 4 is shaked toward the curtain face of the shutter 1 with the supporting shaft as the fulcrum, and therefore, the sensor 2 is shaked right and left along the curtain face to widely sweep the detection area. Thus, the sensor 2 sweeps the human being and regards him as relatively moving to detect him though he is stationary in the room, and the human being in the stationary state is surely detected. |
