A skylight for a building includes a solar panel arranged within the skylight, the solar panel comprising one or more photovoltaic cells to collect direct radiation from rays of sunlight for conversion to electrical power, and an optical element to receive the direct radiation and refract it to the solar panel, and to receive the direct radiation and diffuse radiation scattered from the rays of sunlight and refract the direct radiation and the diffuse radiation through the skylight, bypassing the solar panel, to provide daylighting in the building.

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.

The present disclosure provides a window unit for a building or structure. The window unit is arranged for generating electricity and comprises a panel having an area that is transparent for at least a portion of visible light and having a light receiving surface for receiving light from a light incident direction. The window unit further comprises at least one series of solar cells, each solar cell being a bifacial solar cell and having opposite first and second surfaces each having an area in which light can be absorbed to generate electricity, the solar cells being positioned such that in use the first surfaces are oriented to receive light from the light incident direction and the second surfaces receive light from an opposite direction.

A solar cell system integrated with window glass and a blind is provided. The solar cell system includes high-power solar cell system that has two types of solar cells that are configured to absorb light with different wavelength bands from each other and are coupled to a window glass and a blind, respectively. The solar cell system includes a first solar cell that is coupled to a window glass and a second solar cell that is coupled to a blind and configured to absorb light different in wavelength band from light absorbed by the first solar cell. The band gap energy of the first solar cell is greater than the band gap energy of the second solar cell to maximize generation of electrical energy. Additionally, the second solar cell is coupled to the blind installed to open and close to increase power without degrading transmittance of the window glass.

A combined window frame and solar-powered electricity generating device for supplying power to an existing in-house appliance includes a combined window frame and solar-powered electricity generating device including a window frame, and a solar-powered electricity generating device removably coupled to the window frame in such a manner that the solar-powered electricity generating device is accessible from an interior side of the window frame. Advantageously, upon receiving a user input, the solar-powered electricity generating device cooperates with the window frame thereby generating and transmitting power to an existing in-house appliance.

There are provided various implementations of a solar shade for covering a transmissive panel such as a window, door, sunroof or skylight of a vehicle, building, or home. Such a solar shade includes a photovoltaic sheet, which may be a flexible sheet. The solar shade is configured to absorb heat produced due to sunlight transmitted through the transmissive panel and impinging on the solar shade. The photovoltaic sheet is configured to generate an electrical current using the sunlight.

A shading textile is characterized in that it comprises a plurality of strip-shaped photovoltaic lamellas which, aligned next to one another or spaced apart from one another in their longitudinal direction, form a continuous product by means of a yarn system, wherein the yarn system is designed to be elastic in at least one direction, so that by tensioning the shading textile, a spacing between adjacent photovoltaic elements can be varied perpendicular to the longitudinal direction.

The present invention relates to a window system provided with a blind for solar photovoltaic power generation. In the window system of the present invention, a blind provided with solar cells is installed in a space between indoor side windows and outdoor side windows slidably coupled to the inner surfaces of a window frame. With such a configuration, the window system is easy to install and maintain. The window system of the present invention includes a window frame 10; indoor side windows 21 and outdoor side windows 23 slidably coupled to the inner surfaces of the window frame 10; and a blind 100 for solar photovoltaic power generation installed in a space S between the indoor side windows 21 and the outdoor side windows 23.

A solar window shade for a window seat in an airliner for supplying electrical energy to charge a personal electronic device, including a window shade configured to cover a window, a solar panel attached to an outside face of the window shade, the solar panel facing outward to receive light from outside a passenger cabin, and a charging port incorporated into the window shade, the charging port electrically connected to the solar panel.

According to one embodiment, a photovoltaic system contains a photovoltaic element comprising a photoelectromotive force part, a first transmitting member, and a second transmitting member, the photoelectromotive force part having a light transmitting property and generating an electromotive force by light irradiation, the first transmitting member and the second transmitting member being arranged at both sides of the photoelectromotive force part in a thickness direction, light transmittances of the first transmitting member and the second transmitting member being electrically changed; a control part configured to maximize a power generation amount of the photovoltaic element by changing the respective light transmittances of the first transmitting member and the second transmitting member while a light transmittance of a whole photovoltaic element is kept constant.