Universal light-emitting diode for light fixtures

摘要

A light-emitting diode (LED) system to retrofit a light fixture has a frame configured to be installed under an existing light fixture and a LED lighting assembly couplable to the frame. In one example, the frame is formed as a plurality of rails having a flange to be installed between the light fixture and a grid member of a ceiling suspension system. The frame may be installed without removal of the existing light fixture. The LED lighting assembly includes an LED array and an optical waveguide for dispersing light from the LED array. The LED system maintains a thin profile, enabling it to retrofit existing light fixtures. Installation time is reduced, thereby reducing labor costs, while the LED lighting provides more light with less energy.

主权项

1. A light-emitting diode (LED) system to retrofit a light fixture comprising:
a frame to be installed under a light fixture installed in a ceiling suspension system, the frame having a perimeter and a light seal surface arranged around the perimeter; and a LED lighting assembly detachably couplable to the frame such that at least a portion of the LED lighting assembly is received by the light seal surface of the frame, the LED lighting assembly comprising:
an optical waveguide having co-planar surfaces and an edge separating the co-planar surfaces;a plurality of LEDs arranged to inject light into the edge of the optical waveguide where the light is dispersed out of at least one of the co-planar surfaces;a heat spreader, the heat spreader comprising:
a channel to house the edge of the optical waveguide and at least a portion of the LEDs via a thermal interface; anda plate extending distal to the channel covering a portion of the co-planar surface opposite the at least one co-planar surface of the optical waveguide to dissipate heat from the LEDs housed in the channel, the plate having one or more dimples forceably in contact with the portion of the co-planar surface opposite the at least one co-planar surface of the optical waveguide.