Described is a louver having a frame that forms an enclosure defining an opening, and a plurality of louver blades disposed within the opening. Each of the plurality of louver blades include a catch member that longitudinally extends between a first blade end and a second blade end of a corresponding louver blade. The louver may also include a rotation assembly configured to rotatably couple with the plurality of louver blades and the frame. The plurality of louver blades may autonomously rotate about rotation members of the rotation assembly based on environmental elements captured in the catch member such that the plurality of louver blades are configured in an open position in response to no water in the catch member and are configured in a closed position in response to an amount of environmental elements in the catch member.

Described is a louver having a frame that forms an enclosure defining an opening, and a plurality of louver blades disposed within the opening. Each of the plurality of louver blades include a catch member that longitudinally extends between a first blade end and a second blade end of a corresponding louver blade. The louver may also include a rotation assembly configured to rotatably couple with the plurality of louver blades and the frame. The plurality of louver blades may autonomously rotate about rotation members of the rotation assembly based on environmental elements captured in the catch member such that the plurality of louver blades are configured in an open position in response to no water in the catch member and are configured in a closed position in response to an amount of environmental elements in the catch member.

A shutter includes a window frame, a plurality of blade structures, an intake driving unit and an airflow guiding unit. The window frame has an upper frame portion, a lower frame portion and two side frame portions. The blade structures are disposed on the window frame, and each has a through hole and a plurality of outlets. The intake driving unit is disposed in the upper frame portion. The airflow guiding unit is disposed in at least one of the two side frame portions. Each of the through holes of the blade structures communicates with the inside of at least one of the two side frame portions.

A shutter includes a window frame, a plurality of blade structures, an intake driving unit and an airflow guiding unit. The window frame has an upper frame portion, a lower frame portion and two side frame portions. The blade structures are disposed on the window frame, and each has a through hole and a plurality of outlets. The intake driving unit is disposed in the upper frame portion. The airflow guiding unit is disposed in at least one of the two side frame portions. Each of the through holes of the blade structures communicates with the inside of at least one of the two side frame portions.

A multi-function leaf-separating-discharging height-and-angle-adjustable louvered pergola comprises: opposing end caps, multi-screen-securing edges, rainwater-and-wind-sealing insulation strips attached to multi-screen-securing louver blades for automatically raising and lowering shade and video projection screens and controlling fruit-drying duration and also functioning as a truck-bed tonneau cover, cradle axels inserted between cradle caps and rotation cradles, stanchions and rotation cradles screwed to first and second leaf-discharging side gutter beams, corner posts, multi-louver-control bar connected to linkage arm, linkage arm connected to worm-gear transmission controlled by multi-screen-raising-lowering multi-louver-control crank, first and second rainwater-channeling-and-leaf-filtering side gutter beams attached to the corner posts, the discrete-leaf-filtering tubes, spouts, corner-post base plates, and height-and-angle-adjustable tube screws screwed into the corner-post base plates.

A multi-function leaf-separating-discharging height-and-angle-adjustable louvered pergola comprises: opposing end caps, multi-screen-securing edges, rainwater-and-wind-sealing insulation strips attached to multi-screen-securing louver blades for automatically raising and lowering shade and video projection screens and controlling fruit-drying duration and also functioning as a truck-bed tonneau cover, cradle axels inserted between cradle caps and rotation cradles, stanchions and rotation cradles screwed to first and second leaf-discharging side gutter beams, corner posts, multi-louver-control bar connected to linkage arm, linkage arm connected to worm-gear transmission controlled by multi-screen-raising-lowering multi-louver-control crank, first and second rainwater-channeling-and-leaf-filtering side gutter beams attached to the corner posts, the discrete-leaf-filtering tubes, spouts, corner-post base plates, and height-and-angle-adjustable tube screws screwed into the corner-post base plates.

A louvre window having: a frame, the frame having a head, a sill and at least two jambs; a drive bar located in one or both of the jambs that is movable by a handle; a plurality of blades located within the frame and connected to the drive bar by a pivot drive connector, such that movement of the drive bar urges the blades to pivot, each blade having: a first windowpane attached to the blade; and a second windowpane attached to the blade, wherein operation of the handle causes movement of the blades between an open position and a closed position, wherein in the open position the first windowpanes are aligned to form a barrier against airflow and the second windowpanes are aligned to form a barrier against airflow and in the closed position the first windowpanes are pivoted out of alignment to allow airflow and the second windowpanes are pivoted out of alignment to allow airflow.

A backdraft damper for permitting a flow of air in an outflow direction and preventing the flow of air in a backdraft direction, including a frame having a transverse opening allowing the passage of air through the frame; a plurality of blades, each blade extending across the frame and mounted to the frame about a central portion by pivot members, for rotation between an open position in which the blade allows air to flow through the frame and a closed position in which the blade blocks air from flowing through the frame, the plurality of blades including one or more first blades arranged to rotate in a first direction from the closed position to the open position; one or more second blades arranged to rotate in a second direction opposite to the first direction from the closed position to the open position; the backdraft damper further including a linkage between the one or more first blades and the one or more second blades to cause the first and second blades to together rotate between the closed and open positions; and the one or more second blades being more balanced about respective pivot members than the one or more first blades thereby to permit the one or more first blades to bias the entire plurality of blades to the closed position while being movable to the open position by the force of air flowing through the frame in the outflow direction.

A solar powered smart window includes a light diffuser configured to convert an incident direct solar radiation to a diffusive light toward interior direction, a light diffuser positioner, a driving mechanism, a solar panel, and a control unit. The control unit moved the light diffuser from a predetermined opened position to a closed position and to hold the light diffuser at the closed position with latch mechanism, when the output power of the solar panel exceeds a threshold for over a duration time. The controller releases the latch mechanism and to cause the light diffuser to return to the predetermined opened position when the output power lowers below threshold for over the duration time. A method includes storing a predetermined condition, monitoring the output power, comparing the output power with the predetermined conditions, making decision whether a positional transition is necessary, and causing the transitional transition or maintaining current position.

Described is a louver having a frame that forms an enclosure defining an opening, and a plurality of louver blades disposed within the opening. Each of the plurality of louver blades include a catch member that longitudinally extends between a first blade end and a second blade end of a corresponding louver blade. The louver may also include a rotation assembly configured to rotatably couple with the plurality of louver blades and the frame. The plurality of louver blades may autonomously rotate about rotation members of the rotation assembly based on environmental elements captured in the catch member such that the plurality of louver blades are configured in an open position in response to no water in the catch member and are configured in a closed position in response to an amount of environmental elements in the catch member.