Abstract: A solar-panel unit is provided with: an attachment structure; at least one solar panel, which is delimited by an extensive plane surface of incidence of the solar radiation and is connected to the attachment structure; and a hinging assembly, set between the attachment structure and the solar panel, to enable rotation of the solar panel with respect to the attachment structure about an inclined hinge axis forming an angle smaller than 90° with a horizontal plane.

Abstract: An electrical-connection device, particularly for photovoltaic-cell panels, has: a first electrical terminal, designed to be connected to apparatuses for generation or use of electrical energy and to extend in a fixed position through a wall for support of the connection device; a seal for fluid-tight coupling of the first electrical terminal to the supporting wall; a second electrical terminal connected to the first electrical terminal and to an electrical wiring external to the supporting wall; and an electrically insulated liquid-tight chamber, housing at least partially the first electrical terminal and the second electrical terminal.

Abstract: A solar-panel unit is provided with: an attachment structure; at least one solar panel, which is delimited by an extensive plane surface of incidence of the solar radiation and is connected to the attachment structure; and a hinging assembly, set between the attachment structure and the solar panel, to enable rotation of the solar panel with respect to the attachment structure about an inclined hinge axis forming an angle smaller than 90° with a horizontal plane.

Abstract: A photovoltaic panel has an external casing, which is delimited by at least one wall permeable to light and defines a liquid-tight chamber communicating with the outside world through an inlet passage and an outlet passage; the liquid-tight chamber houses a polydimethylsilicone liquid, which circulates in the liquid-tight chamber itself through the inlet and outlet passages and in which at least one photovoltaic cell is immersed at least partially, electrically connected with the outside of the photovoltaic panel.

Abstract: An electrical-connection device, particularly for photovoltaic-cell panels, has: a first electrical terminal, designed to be connected to apparatuses for generation or use of electrical energy and to extend in a fixed position through a wall for support of the connection device; a seal for fluid-tight coupling of the first electrical terminal to the supporting wall; a second electrical terminal connected to the first electrical terminal and to an electrical wiring external to the supporting wall; and an electrically insulated liquid-tight chamber, housing at least partially the first electrical terminal and the second electrical terminal.

Abstract: A photovoltaic panel has an external casing, which is delimited by at least one wall permeable to light and defines a liquid-tight chamber communicating with the outside world through an inlet passage and an outlet passage; the liquid-tight chamber houses a polydimethylsilicone liquid, which circulates in the liquid-tight chamber itself through the inlet and outlet passages and in which at least one photovoltaic cell is immersed at least partially, electrically connected with the outside of the photovoltaic panel.