Roller shade

A roller shade, comprising:

• a light shielding sheet which can be rolled up in a roll shape or can be unrolled and which covers a window formed in a roof of a vehicle so as to open or close the window;
• rolling means configured to move the light shielding sheet in an opening direction of the window by rolling up the light shielding sheet and move the light shielding sheet in a closing direction of the window by unrolling the light shielding sheet;
• a pair of strip-shaped guide belts each extending along a corresponding one of side end parts of the light shielding sheet in a sheet width direction perpendicular to a traveling direction of the light shielding sheet and each connected to a lower surface of the light shielding sheet;
• and
• a pair of guide parts each having a guide space which receives a corresponding one of the side end parts of the light shielding sheet in the sheet width direction and a corresponding one of the guide belts, for guiding the side end part and the guide belt in the traveling direction, wherein
• each guide belt tilts downward from a base end which is a connection part of the guide belt with the light shielding sheet, toward an inner side in the sheet width direction, and is vertically flexible about the connection part as a point of support, and
• an inner wall surface of the guide space includes an inclined surface part which is located near the guide belt and closer to the inner side in the sheet width direction than the guide belt, and which extends upward to tilt to an outer side in the sheet width direction, and
• wherein a vertical length of the guide space on the outer side in the sheet width direction is shorter than a vertical length of the guide space on the inner side in the sheet width direction.