Partially recessed luminaire

A rectangular luminaire (12g) includes a rectangular fixture (28g) defining at least one cavity (34g) having a plurality of light engines (30a-30n). A heat flange (32g) is disposed about a distal end region of the rectangular fixture and includes a hollow, generally pyramidal frustum shape with a ge...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	GOTAY JAMES A, DREEBEN THOMAS D
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHTING MECHANICAL ENGINEERING NON-PORTABLE LIGHTING DEVICES STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	A rectangular luminaire (12g) includes a rectangular fixture (28g) defining at least one cavity (34g) having a plurality of light engines (30a-30n). A heat flange (32g) is disposed about a distal end region of the rectangular fixture and includes a hollow, generally pyramidal frustum shape with a generally rectangular cross-section. A distal-most end of the heat flange is configured to be disposed a distance D from a support surface (20) when the rectangular fixture is received in a recess of the support surface, the distance D being greater than or equal to 0.4 times the fixture half -width W. Thermal energy is conductively transferred from the light engine, through the rectangular fixture, to the heat flange where the thermal energy is convectively transferred from the heat flange to surrounding air to create air currents flowing along the support surface thereby reducing the junction temperature.