Operating device for solar radiation shielding device and cord supporting part for solar radiation shielding device

An operation apparatus for a sunlight shielding apparatus, the sunlight shielding apparatus comprising:

• a sunlight shielding material;
• a rail configured to support the sunlight shielding material in such a manner that the sunlight shielding material is movable;
• and
• an endless operation cord supported by the rail in such a manner that the operation cord can move around along the rail, wherein
• the sunlight shielding material is transferred along the rail as the operation cord moves around in the rail,
• the operation cord comprises:
• a pair of cord portions extending in parallel with each other along the rail;
• a first endless edge which is a junction of first ends of the cord portions;
• and
• a second endless edge which is a junction of second ends of the cord portions,
• the first endless edge hangs from one end of the rail,
• the second endless edge is supported in the rail through a cord support unit, and
• the cord support unit comprises:
• positioning release means 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 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 a floor.

A cord support unit for a sunlight shielding apparatus, the sunlight shielding apparatus comprising:

• a sunlight shielding material;
• a rail configured to support the sunlight shielding material in such a manner that the sunlight shielding material is movable;
• and
• an endless operation cord supported by the rail in such a manner that the operation cord can move around along the rail, wherein
• the sunlight shielding material is transferred along the rail as the operation cord moves around in the rail,
• the operation cord comprises:
• a pair of cord portions extending in parallel with each other along the rail;
• a first endless edge which is a junction of first ends of the cord portions;
• and
• a second endless edge which is a junction of second ends of the cord portions,
• the first endless edge hangs from one end of the rail,
• the second endless edge is supported in the rail through the cord support unit, and
• the cord support unit comprises positioning release means configured to, when a tensile force is applied to both the cord portions at the second endless edge in the same direction, release positioning of the second endless edge with respect to the rail.

A cord support unit attached to a lengthwise middle portion of a rail of a sunlight shielding apparatus, the cord support unit comprising:

• a first end case with which an operation cord hanging from a right end of the rail is engaged, the first end case being movably supported by the rail;
• a second end case with which an operation cord hanging from a left end of the rail is engaged, the second end case being movably supported by the rail;
• and
• a locking piece disposed on the lengthwise middle portion of the rail and configured to elastically hold the first and second end cases.