Universal light-emitting diode retrofit assembly for light fixtures

A method of retrofitting a pre-existing light fixture with a light-emitting diode (LED) system, the method comprising:

• under a pre-existing light fixture installed in a ceiling suspension system,
• installing a frame between a first grid member and a second grid member of the ceiling suspension system, the frame comprising a plurality of rails,
• each of the rails having:
• (i) a jamb arranged around an inside perimeter of the frame, and (ii) a flange arranged around an outside perimeter of the frame opposite the jamb for installation between the pre-existing light fixture and the first and second grid members of the ceiling suspension system,
• wherein installing the frame comprises inserting the flanges between the pre-existing light fixture and the first and second grid members of the ceiling suspension system;
• and
• coupling a LED lighting assembly to the frame so that when the LED lighting assembly nestles into the jamb, the LED lighting assembly overlays the pre-existing light fixture to cover the pre-existing light fixture without having to remove the pre-existing light fixture.

A frame to retrofit a light fixture installed in a ceiling comprising:

• a flange arranged around an outside perimeter of the frame;
• a jamb arranged around an inside perimeter of the frame opposite the flange;
• a side rail having the flange, the side rail flange to be installed under the light fixture, between the light fixture and a first grid member of the ceiling suspension system;
• another side rail having the flange, the other side rail flange to be installed under the light fixture, between the light fixture and a second grid member, opposite the first grid member, of the ceiling suspension system;
• an end rail having the flange, the end rail flange to be installed under the light fixture, between the light fixture and a third grid member of the ceiling suspension system;
• and
• another end rail having the flange, the other end rail flange to be installed under the light fixture, between the light fixture and a fourth grid member, opposite the third grid member, of the ceiling suspension system.

A light-emitting diode (LED) system to retrofit a pre-existing light fixture comprising:

• a pre-existing light fixture installed in a ceiling suspension system;
• a frame installed under the pre-existing light fixture, the frame having a perimeter and comprising a plurality of rails each of the rails having a light seal surface arranged around the perimeter, and a flange arranged to project externally from the perimeter away from the interior and opposite the light seal surface and installed between the pre-existing light fixture and a rail of a ceiling suspension system;
• 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.