| 摘要 |
By operating an endless operation cord (7) so that the operation cord (7) moves around in a rail (1), a sunlight shielding material (4) is transferred along the rail (1). The operation cord 7 includes a pair of cord portions extending in parallel with each other along the rail (1), a first endless edge hanging from one end of the rail (1), and a second endless edge supported in the rail (1) through a cord support unit (9). A cord support unit (9) includes positioning release means (18a, 18b) configured to, when a tensile force is applied to both the cord portions at the second endless edge, release positioning of the second endless edge with respect to the rail and a guide member (12) configured to, when the positioning of the second endless edge is released, allow the second endless edge to move at least until the first endless edge reaches the floor. |
