Window Shade

A window shade comprising:

• a head frame;
• a reel pivotally connected with the head frame and rotatable about a first pivot axis;
• a roller pivotally connected with the head frame at a position spaced apart from the reel, the roller being rotatable about a second pivot axis;
• a panel assembly connected with the reel and including a first and a second panel, and a plurality of transversal vanes that are respectively connected with the first and second panels, the first panel being disposed in contact with the roller, and the panel assembly being switchable between an open state for light passage and a closed state blocking light passage by rotating the transversal vanes;
• a clutch operatively connected with the roller, the clutch being switchable between an engaged state preventing the roller from rotating in a first direction, and a disengaged state for rotation of the roller in a second direction opposite to the first direction;
• and
• an actuating module coupled with the reel and including a bead chain, the bead chain being operable to drive the reel in rotation for winding and unwinding the panel assembly, the bead chain further being operable to drive the reel in rotation in an unwinding direction while the roller is kept stationary by the clutch in the engaged state for switching the panel assembly from the closed state to the open state.