SOLAR RADIATION SHIELDING MEMBER ELEVATING DEVICE FOR MOTOR-DRIVEN BLIND, AND SLAT ELEVATING DEVICE FOR MOTOR- DRIVEN HORIZONTAL BLIND

摘要

PROBLEM TO BE SOLVED: To provide a solar radiation shielding member elevating device for a motor-driven blind increasing elevating cord winding length onto an elevating cord winding shaft without changing the diameter of the elevat ing cord winding shaft and a space between a head box end and an elevating cord closest to the head box end. SOLUTION: An elevating cord winding shaft 9 is rotatably supported into a head box 1. Elevating cords 8 of solar radiation shie1ding members 3 are supported hanging down from the elevating cord winding shaft 9 and axially moved while rotating the elevating cord winding shaft 9 by a solar radiation member elevating motor 24 disposed in the head box 1, to wind the elevating cords 8 spirally onto the elevating cord winding shaft 9 or rewind it, thus elevating the solar radidation shielding members 3. In a motor-driven blind of such constitution, the solar radiation shielding member elevating motor 24 is disposed in a position off the extension line in the moving direction of the elevating cord winding shaft 9.