Abstract: An illumination apparatus includes a monolithic support substrate and light emitting diodes (LEDs) on one or more external sides of the support substrate. The support substrate may comprise an elongated extrusion enclosing a hollow core. The LEDs may be affixed to rigid or flexible electrical substrates. Each electrical substrate may be affixed to an external side of the extrusion and may include embedded LED circuitry. The hollow core may enable the extrusion to be received in a recessed socket of a light fixture, wherein the recessed socket provides structural support for the applicable end of the extrusion, rendering end caps or end socket adapters unnecessary. The light fixture may include a contact protruding from the recessed socket and the electrical substrates may include circuity configured to couple the LEDs to a source of power not coupled to the protruding contact.

Abstract: An apparatus, manufacture and method of illumination support being a single monolithic substrate with light emitting diodes mounted on the external sides of the monolithic substrate. The necessary circuitry for the LEDs is embedded in one or more rigid or flexible electrical substrate that is affixed to one or more of the external sides of the monolithic substrate. The two terminal ends of the monolithic substrate are designed to fit into the lamp sockets of an existing or new light fixture without the use of end caps or end socket adapters, which provides structural support for the monolithic substrate.