LED light fixture

An LED light fixture comprising:

• a heat-conductive structure comprising an LED-supporting region and heat-dissipating surfaces extending away therefrom, at least one LED light source being thermally coupled to the LED-supporting region, the heat-conductive structure defining venting apertures bordering the at least one LED light source and open for ambient fluid flow to and from the heat-dissipating surfaces;
• and
• a pair of walls at least partially extending along a common plane and along at least one opening permitting ambient-fluid flow through the fixture, one of the walls being of a second fixture portion forming a substantially closed chamber, the other of the walls being a protrusion extending into the at least one of the openings, thereby dividing such opening into a pair of separate ambient-fluid flow paths each corresponding to one of the heat-conductive structure and the second fixture portion.

An LED light fixture comprising a pair of walls at least partially extending along a common plane and along at least one opening permitting ambient-fluid flow through the fixture adjacent to a heat-conductive structure having an LED-supporting region and heat-dissipating fins extending away therefrom, the heat-conductive structure defining a plurality of venting apertures adjacent at least one LED light source thermally coupled to the LED-supporting region, the fins increasing in height at positions adjacent to at least one of the venting apertures.

An LED light fixture comprising:

• at least one LED light source comprising at least one longer side and at least one shorter side;
• a pair of walls at least partially extending along a common plane and along at least one opening permitting ambient-fluid flow through the fixture at the shorter side of the LED light source thermally coupled to an LED-supporting region of a heat-conductive structure comprising heat-dissipating surfaces extending away from the LED-supporting region, the heat-conductive structure defining venting apertures bordering the at least one longer side of each of said at least one LED light source.

An LED light fixture comprising:

• at least three fixture portions defining at least one opening corresponding to each of the fixture portions, at least one of the fixture portions forming a substantially closed chamber, each opening permitting ambient-fluid flow through the fixture for removal of heat generated during operation;
• and
• a pair of walls at least partially extending along a common plane and along the at least one opening between each adjacent pair of the fixture portions, one of the walls being of the fixture portion forming the chamber.