Abstract: A modular lighting system has lamps that may be connected to one another such that current is carried between the lamps. The lamps include an enclosure that is at least partially optically transmissive. At least one LED is located in the enclosure that is operable to emit light through the enclosure when energized through an electrical path. A first electrical connector is provided for connecting the electrical path to a power source and a second electrical connector is configured to connect the electrical path to a second lamp.

Abstract: A modular lighting system has lamps that may be connected to one another such that current is carried between the lamps. The lamps include an enclosure that is at least partially optically transmissive. At least one LED is located in the enclosure that is operable to emit light through the enclosure when energized through an electrical path. A first electrical connector is provided for connecting the electrical path to a power source and a second electrical connector is configured to connect the electrical path to a second lamp.

Abstract: A modular LED unit having a number of LED modules separately mounted on individual interconnected preferably-extruded heat sinks, each heat sink having: a base configured to engage and hold an LED module in place and, in preferred forms, to facilitate the ganging of heat-sink/LED modules; and a plurality of fins, including inner-fins and side-fins, projecting from the opposite surface of the base and extending therealong, the side-fins having interlocking features to facilitate the ganging of heat-sink/module units together and, in preferred forms, to facilitate interconnection of the modular LED unit to other portions of a lighting fixture.