| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lifting device for illumination improved in detection accuracy of a detection part to detect movement of a wire by increasing the movement amount in horizontal direction of the wire wound by a rotary drum, when the rotary drum rotates. <P>SOLUTION: The lifting device for the illumination includes a lifting device body 1, a rotary drum 2 which is supported by the lifting device body 1 rotatably in horizontal direction, a wire 6 wound around at the outer circumference part of the rotary drum 2, and a lighting apparatus 8 installed at one part of the wire 6. The wire 6 is made of a plurality of pieces, and a line of recessed groove 20 is installed at the outer circumference part of the rotary drum 2 in parallel with the rotating face and throughout the whole circumference, and the plurality of wires 6 are wound around and housed in the recessed groove 20 so as to be swirl shape in a plan view in the nearly horizontal plane including the recessed groove 20, and a detection part 9 which detects movement in horizontal direction of the portion of wires 6 wound moving in inside and outside direction of the recessed groove 20 due to increase and decrease of the winding thickness of the wires 6 wound in the recessed groove 20 and stops the rotary drum 2 is installed. <P>COPYRIGHT: (C)2008,JPO&INPIT |
