A luminaire including a housing made of thermally conductive material having a top, a bottom and two opposite sides connecting the top to the bottom, each side having plurality of external, vertically spaced, substantially parallel cooling fins that extend longitudinally and project laterally outwardly of the housing, preferably at a shallow downward and outward angle. The housing configuration provides a large surface area per unit of housing length to optimize heat dissipation. A configurable, cartridge-like LED bezel assemblyreadily replaceable in the fieldis supported on the bottom of the housing. A driver for the LED assemblyalso readily replaceable in the fieldis located within the housing.

A phosphor wheel includes: a substrate including a first principal surface and a second principal surface; a phosphor layer; and a heat dissipating member. The heat dissipating member includes: a projecting portion projecting toward one of the principal surfaces and including a contact surface that contacts the one of the principal surfaces; and fins provided by cutting and raising regions in a peripheral region of the heat dissipating member excluding a central portion of the heat dissipating member. The regions each include a notch provided by cutting off part of a first side of the region opposite to a second side of the region continuous with a corresponding one of the fins. The projecting portion secures a certain distance between the substrate and the heat dissipating member and conducts heat in the substrate to the peripheral region of the heat dissipating member.

Accroding to the present disclosure, a heat sink, which may be used e.g. for LED lamps or bulbs for motor vehicle lights, includes: a plate-like portion extending along an axis with opposed mounting surfaces for at least one heat source, such as e.g. a LED lighting source, and a finned portion thermally coupled with the plate-like portion and including a plurality of annular fins extending around said axis.

Embodiments may utilize a series of exposed fins, which increase the surface area of the heat sink creating additional air flow. As hotter air rises within the system, cooler is drawn into the heatsink. The fins may be exposed on both sides of the longitudinal axis, allowing cooler air to be drawn towards the longitudinal axis above the heatsink and flow upward. This process may cool the fins. Additionally, the spacing between the fins may have to be wide enough to allow for air to freely enter the heatsink.

A method can be used to illuminate a surface that includes a number of non-overlapping portions. The method includes simultaneously illuminating each of the portions so that the surface is substantially uniformly lit. Each portion is illuminated by a respective lighting assembly. Each lighting assembly includes a plurality of LEDs and a plurality of optical elements proximate the plurality of LEDs. For each lighting assembly, when all LEDs of the lighting assembly are operating, the entire portion of the surface is illuminated with an illumination level and a uniformity. Failure of one or more LEDs of the lighting assembly will cause the illumination level of light impinging the portion of the surface to decrease while the uniformity of light impinging the portion of the surface remains substantially the same.

In a first aspect of the subject invention, an LED light assembly is provided comprising: a housing; and, a plurality of LED light modules coupled together in axial end-to-end fashion so as to define an elongated lighting strip, each said light module including at least one heat dissipation block and at least one LED element, wherein, said lighting strip is secured to said housing.

A lighting module with an efficient heatsink. The heatsink may include a base conducting portion, side fins, and a center structure. The side fins may extend away from the base portion in such a way that the distance between the fins and the center structure may vary as they may extend away from the base portion. Warm air near the base conducting portion may rise due to natural convection buoyancy, in which vertical narrowing passages may result in the passive air flow increasing in velocity as it may travel near the narrowing surface area of the heatsink improving heat transfer, and as the side fins and center structure air passages widen, the air velocity may reduce as the warm air may be distributed above heatsink.

Light engine modules comprise a support member and a solid state light emitter, in which (1) the emitter is mounted on the support member, (2) a region of the support member has a surface with a curved cross-section, (3) the emitter and a compensation circuit are mounted on the support member, (4) an electrical contact element extends to at least two surfaces of the support member, and/or (5) a substantial entirety of the module is located on one side of a plane and the emitter emits light into another side of the plane. Also, a module comprising means for supporting a light emitter and a light emitter. Also, a lighting device comprising a housing member and a light emitter mounted on a removable support member. Also, a lighting device comprising a module mounted in a lighting device element. Also, a method comprising mounting a module to a lighting device element.

An LED light bulb has a hollow LED support/heat sink (222, 602, 702, 900, 802, 1002, 1102, 1216, 1404, 1502, 1606, 1906) with fins (234, 406, 604, 706, 804, 904, 906,1008, 1106, 1620) extending internally and openings at two ends (230, 232, 1522). Heat generated by the LEDs (238, 908, 1242, 1624, 2504) is conducted through the heat sink fins and is removed by a convectively driven air flow that flows through the LED support/heat sink. LEDs are mounted on multiple external faces (236, 404, 910, 1524, 1622) of the LED support/heat sink thereby providing illumination in all directions. Lenses (1246, 2102, 2104) are provided for the LEDs to make the illumination highly uniform.

A light assembly includes a thermally conductive support structure configured for outdoor use. LEDs are attached to a circuit board and thermally coupled to a heat sink. A single transparent substrate overlies the LEDs and includes a number of optical elements. Each of the plurality of optical elements is configured to direct light from each LED in three primary directions. Each optical element includes a first portion, a second portion, and a third portion. The first, second and third portions of each optical element are configured to direct light from the associated LED in a first, second and third primary direction, respectively. The first primary direction is a lateral direction, the second primary direction is also a lateral direction and the third primary direction is approximately orthogonal to the first and second lateral directions.