A window blind includes a headrail, two lift cords, a blind body, a bottom rail and two cord winding devices. The two cord winding devices are respectively installed on the bottom of the bottom rail. Subject to the technical feature that the other ends of the two lift cords are respectively tied to the adjustment columns of the two cord winding devices, if the winding stroke is inconsistent and the blind body is folded unevenly or skewed when the window blind is folded or stretched, the adjustment column of one cord winding device can be fine-adjusted to let the respective lift cord be gradually wound and covered on the adjustment column, so that the bottom rail and the blind body can be gradually adjusted to be substantially parallel to the bottom of the headrail, thereby effectively achieving the effect of fine-tuning and correcting the blind body.

A window blind includes a headrail, two lift cords, a blind body, a bottom rail and two cord winding devices. The two cord winding devices are respectively installed on the bottom of the bottom rail. Subject to the technical feature that the other ends of the two lift cords are respectively tied to the adjustment columns of the two cord winding devices, if the winding stroke is inconsistent and the blind body is folded unevenly or skewed when the window blind is folded or stretched, the adjustment column of one cord winding device can be fine-adjusted to let the respective lift cord be gradually wound and covered on the adjustment column, so that the bottom rail and the blind body can be gradually adjusted to be substantially parallel to the bottom of the headrail, thereby effectively achieving the effect of fine-tuning and correcting the blind body.

A shading device comprises a power supply device comprising a battery, a first and a second electrical connection elements and a resilient element. The battery is disposed at a holding device for holding the screen. The first element is disposed at a load bar or the screen and configured so as to be electrically connected to an external electrical supply source. The second element is disposed at the holding device and configured to cooperate with the first element. The resilient element is configured to be fixed on the load bar or on the screen. The first element is integral with the resilient element. Furthermore, the resilient element is configured to compensate a misalignment of the first electrical connection element with respect to the second electrical connection element, when the screen reaches a position for recharging the battery.

In one aspect, a covering for an architectural structure includes an upper rail, a bottom rail configured to be spaced apart from the upper rail, and an intermediate rail positioned between the upper rail and the bottom rail. The covering also includes a first shade panel supported between the upper rail and the intermediate rail that has a first shade configuration, and a second shade panel supported between the intermediate rail and the bottom rail that has a second shade configuration, with the second shade configuration differing from the first shade configuration.

A fabric venetian window shade assembly including: an actuation system for a double panel window shading including opposing first and second facings coupled by a plurality of vanes, the actuation system comprising: a roller configured to receive the opposing first and second facings; a ratcheting mechanism mechanically coupled to at least the second facing through the roller; and a grip coupled exclusively to a lower end of the second facing, wherein, in response to a downward force being applied to the grip, the downward force is applied directly to the second facing without being applied directly to the first facing, and wherein the ratcheting mechanism is further configured to adjust a position of the opposing first and second facings and an orientation of the plurality of vanes relative to the opposing first and second facings.

A fabric venetian window shade assembly including: an actuation system for a double panel window shading including opposing first and second facings coupled by a plurality of vanes, the actuation system comprising: a roller configured to receive the opposing first and second facings; a ratcheting mechanism mechanically coupled to at least the second facing through the roller; and a grip coupled exclusively to a lower end of the second facing, wherein, in response to a downward force being applied to the grip, the downward force is applied directly to the second facing without being applied directly to the first facing, and wherein the ratcheting mechanism is further configured to adjust a position of the opposing first and second facings and an orientation of the plurality of vanes relative to the opposing first and second facings.

A perimeter light blockout system for minimizing light leakage between light gaps such as, for example, between the sides of a covering (e.g., shade) of an architectural-structure covering and the interior side surfaces of a window frame, or between the covering and the outer surface of an interior wall is disclosed. The perimeter light blockout system including a light blocking device and a mounting element for coupling the light blocking device to the interior side surface of the window frame, or the outer surface of the interior wall. The light blocking device may include rear and front channel members. The mounting element may be a mounting extrusion. Alternatively, the mounting element may be a spring clip. In use, the light blocking device may be adapted and configured so as not to contact the covering as the covering moves between extended and retracted positions. The mounting element may include a degree of adjustment so that the light blocking device may be aligned with an out-of-skew window frame.

A perimeter light blockout system for minimizing light leakage between light gaps such as, for example, between the sides of a covering (e.g., shade) of an architectural-structure covering and the interior side surfaces of a window frame, or between the covering and the outer surface of an interior wall is disclosed. The perimeter light blockout system including a light blocking device and a mounting element for coupling the light blocking device to the interior side surface of the window frame, or the outer surface of the interior wall. The light blocking device may include rear and front channel members. The mounting element may be a mounting extrusion. Alternatively, the mounting element may be a spring clip. In use, the light blocking device may be adapted and configured so as not to contact the covering as the covering moves between extended and retracted positions. The mounting element may include a degree of adjustment so that the light blocking device may be aligned with an out-of-skew window frame.

A shielding device for opening and closing a shielding member by rotation of a winding shaft, the shielding device including a speed controller configured to control an automatic movement speed of the shielding member, wherein the speed controller includes: a housing containing a viscous fluid; and a moving member contained in the housing and configured to move by rotation of the winding shaft, and the speed controller is configured so that resistance the moving member receives from the viscous fluid varies with movement of the moving member, is provided.

A shielding device for opening and closing a shielding member by rotation of a winding shaft, the shielding device including a speed controller configured to control an automatic movement speed of the shielding member, wherein the speed controller includes: a housing containing a viscous fluid; and a moving member contained in the housing and configured to move by rotation of the winding shaft, and the speed controller is configured so that resistance the moving member receives from the viscous fluid varies with movement of the moving member, is provided.