Solar-powered LED module and lighting fixtures

摘要

An exemplary embodiment of a solar-powered lighting fixture includes a solar panel electrically connected to a control circuit, a rechargeable battery to store electrical energy generated by the solar panel, and a LED module with a lens, wherein the lens has a plurality of integral optical elements comprising an inner refracting surface and an outer refracting surface, and the control circuit is capable of charging the battery by adjusting the charge current from the solar panel to the battery, automatically powering the at least one light-emitting diode on and off, and automatically adjusting the level and duration of electrical current provided to the at least one light-emitting diode. In at least one embodiment, the control circuit includes a microprocessor to calculate an operational profile based on the charge stored in the battery and an anticipated power requirement.

主权项

1. A lighting fixture comprising:
at least one light-emitting diode electrically connected to a control circuit; at least one solar panel electrically connected to the control circuit and capable of converting solar radiation into electrical energy, wherein the electrical energy is stored in a rechargeable battery electrically connected to the control circuit; at least one lens, wherein the lens is comprised of a plurality of integral optical elements comprising an inner surface and an outer surface, wherein the outer surface comprises a substantially curvilinear refracting surface defining a generally conical shape revolved around an axis, wherein the lens includes a focal point disposed on the axis, the light-emitting diode disposed at the focal point, and wherein the inner surface is comprised of at least one optical element having both a refracting facet and an internally reflecting facet, and wherein further light reflected and/or refracted by the optical element is further refracted by the outer surface to exit the lens at an angle below a horizontal plane; and wherein the control circuit regulates charging the rechargeable battery by adjusting the charge current supplied from the solar panel to the rechargeable battery in response to changes in the voltage of the solar panel.