Linear edgelit lighting system with heat sink base and clamp coupled together with a fastener

A linear edgelit lighting device comprising:

• a housing channel;
• a heat sink assembly coupled to the housing channel and comprising a heat sink base and a heat sink clamp that are coupled together to form a light source housing cavity and a waveguide housing cavity that are located substantially at a middle portion of the heat sink assembly,
• a waveguide comprising a first major surface, a second major surface disposed opposite to the first major surface, and an edge disposed between the first major surface and the second major surface, the edge at least partially disposed in the waveguide housing cavity of the heat sink assembly such that the waveguide is substantially perpendicular to the housing channel and the heat sink assembly;
• and
• one or more light emitting diodes (LEDs) disposed within the light source housing cavity of the heat sink assembly and directed towards the edge of the waveguide such that light emitted by the one or more LEDs enters the waveguide through the edge,
• wherein the heat sink base and the heat sink clamp are coupled together by a fastener disposed at an acute angle relative to one of the first and second major surfaces of the waveguide, the fastener being offset from the middle portion of the heat sink assembly,
• wherein the fastener is tightened to pull the heat sink clamp against the heat sink base and to exert a horizontal clamping force on the waveguide in order to securely retain the waveguide in the linear edgelit lighting device,
• wherein the housing channel comprises:
• an elongated base portion;
• a plurality of side walls, each extending from opposite longitudinal edges of the base portion and substantially perpendicular to the base portion;
• an open side extending between the plurality of side walls and opposite the base portion;
• and
• an open lateral end at each end of the housing channel, and
• wherein at least one of the open lateral ends of the housing channel is coupled to an open lateral end of a second linear edgelit lighting device, the second linear edgelit lighting device comprising one or more second LEDs and a second waveguide.

A lighting system comprising:

• a first lighting fixture comprising:
• a first elongated housing channel having a pair of first open lateral ends opposite to each other and adjacent a respective lateral edge of the first elongated housing channel;
• a pair of first end caps, each first end cap disposed at a respective first open lateral end to cover the respective first open lateral end;
• a first light emitting diode (LED) strip coupled to the first elongated housing channel and comprising a plurality of LEDs;
• and
• a first waveguide coupled to the first elongated housing channel such that light emitted from the plurality of LEDs of the first LED strip enters the first waveguide through an edge of the first waveguide;
• and
• a second lighting fixture comprising:
• a second housing channel having a pair of second open lateral ends opposite to each other and adjacent a respective lateral edge of the second housing channel;
• a second light emitting diode (LED) strip coupled to the second elongated housing channel and comprising a plurality of LEDs;
• and a second waveguide coupled to the second elongated housing channel such that light emitted from the plurality of LEDs of the second LED strip enters the second waveguide through an edge of the second waveguide,
• wherein the first lighting fixture is coupled to the second lighting fixture such that one first open lateral end of the first elongated housing channel is adjacent one second open lateral end of the second housing channel, and
• wherein at least one of the pair of first end caps is configured to operate as an alignment bracket to couple the first lighting fixture to the second lighting fixture such that a portion of the at least one of the pair of first end caps is coupled to the first elongated housing channel and another portion of the at least one of the pair of first end caps is coupled to the second housing channel.