| 摘要 |
PROBLEM TO BE SOLVED: To provide a lifting and lowering device for a shielding material of a solar radiation shielding apparatus which prevents looseness in a lifting and lowering code for suspending and supporting an intermediate rail and enables the smooth lifting and lowering operation of a bottom rail and the intermediate rail. SOLUTION: The lifting and lowering device for the shielding material is provided with first and second operation means arranged in a head box, lifting devices 6, 7, 9, 10, 11, 12, 20, 21, 31 for carrying out the lifting operation of the bottom rail by the continuous operation of the first operation means after the intermediate rail is lifted to an upper limit by the operation of the first operation means, and lowering devices 22, 23 for lowering the intermediate rail and the bottom rail by their own weights through the operation of the second operation means 34. COPYRIGHT: (C)2009,JPO&INPIT
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