A mounting plate assembly has a mounting plate for mounting a light fixture in holes of different diameters and wherein a guide rail assembly is secured to a rear face of the mounting plate on opposed sides of an aperture. Each guide rail assembly has a novel displaceable spring clamp structure having to a displaceable base coupled for sliding displacement along a guide rail assembly. Spring biasing elements are provided between the displaceable base and the guide rail assembly to urge a bottom face of the displaceable base against a flat top surface of a mounting base to which the guide rails are secured. A retention formation is provided in the bottom surface of the displaceable base for retention coupling with a selected one of space-apart engageable retainers immovably secured to the flat top surface of the mounting base and aligned with the retention formation to arrest the displaceable base at a desired location to position the spring clamp structures at a desired location with respect to the size of a hole formed in the sheet material and to which a light fixture is to be secured.

A mounting plate assembly has a mounting plate for mounting a light fixture in holes of different diameters. A guide rail assembly is secured to a rear face of the mounting plate on opposed sides of an aperture. Each guide rail assembly has a displaceable spring clamp structure mounted on a displaceable base coupled for sliding displacement along the guide rail assembly. Spring biasing elements are provided between the displaceable base and the guide rail assembly to urge a bottom face of the displaceable base against a flat top surface of a mounting base to which the guide rails are secured. A retention formation is provided in the bottom surface of the displaceable base for retention coupling with a selected one of space-apart engageable retainers immovably secured to the flat top surface of the mounting base and aligned with the retention formation to arrest the displaceable base at a desired location to position the spring clamp structures at a desired location with respect to the size of a hole formed in the sheet material and to which a light fixture is to be secured.

Lighting unit with a container body (10) made by means of extrusion, a series of first light sources (21; 221) and a series of second light sources (22; 222), arranged on at least one printed circuit board (20; 220a, 220b); a power supply (50,51) supplying power to the light sources (21, 22; 221, 222); diffusion optics (30) for diffusion of the light emitted by the first light sources (21; 221); and concentrating and/or directing optics (40) for concentrating and/or directing the light emitted by the second sources (22; 222).

A luminaire (1) comprising identical curved LED Modules (13, 13′, 13″) in an inner and an outer arrangement of LED Modules. Said LED Module comprising a curved PCB (14) having a main surface and a number of LEDs (15) arranged thereon. The LED Module has width W and is curved with its main surface extending in a plane Q. The LED Module extends over a circle with a radius Rc, wherein 200 mm<=Rc<=450 mm, and extends over an angle a over said circle, wherein 36°<=a<=72°. The number of LEDs is in between 3 and 150. Each LED (15) has a respective doughnut like shaped lens to render the LED during operation to emit a rotational symmetric batwing beam with a maximum intensity Imax of the batwing beam at an angle 13 with 60°<=13<=80° with said optical axis, and a FWHM in the range of 15-30°.

The present disclosure relates to an LED explosion-proof lamp. The LED explosion-proof lamp includes a lighting portion having a first engagement structure and a first positioning hole, a connecting portion detachably connected to the lighting portion and having a second engagement structure, a second positioning hole, and an opening suitable for accommodating the support rod of the LED explosion-proof lamp, a positioning member detachably inserted into the first positioning hole and the second positioning hole, wherein one of the first engagement structure and the second engagement structure is configured as a sliding groove, and the other of the first engagement structure and the second engagement structure is configured as a protrusion adapted to be inserted into the sliding groove and movable along the sliding groove. The LED explosion-proof lamp has the advantages of simple structure, easy processing and assembly, and high structural strength.

A lighting fixture includes a fixture housing. A circuit board is positioned in the fixture housing. The circuit board includes a driver circuit. A plurality of light emitters are disposed on the circuit board. The light emitters are operatively connected to the driver circuit to produce a light output. A temperature sensor is disposed on the circuit board, the temperature sensor configured to measure a temperature of the circuit board and output a signal. The driver circuit is configured to reduce the light output in response to the signal from the temperature sensor.

A light emitting assembly comprising a solid state device, when and if coupleable with a power supply constructed and arranged to power the solid state device to emit from the solid state device a first wavelength radiation (i.e., primary radiation), and a set of nesting enclosures enhancing the luminescence of the solid-state device and providing a mechanism for arranging luminophoric medium in receiving relationship to said first radiation, and which in exposure to said first radiation, is excited to responsively emit a second wavelength radiation (i.e., secondary radiation) or to otherwise transfer its energy without radiation to a third radiative component (i.e., tertiary radiation). In a specific embodiment, monochromatic blue or UV light output from a light-emitting diode is converted to achromatic light with fluorescers and phosphors under an inert gas. In a specific embodiment, heat is dissipated to the external surroundings without employing a heat sink.

An LED downlighting apparatus includes a housing with a sidewall having a front facing edge and a back facing edge positioned adjacent to a ceiling when the LED downlighting apparatus is installed in an opening of the ceiling. A depth of the sidewall is less than one inch and a thickness of at least a portion of the sidewall is less than three millimeters. An LED board and a lens are coupled to the housing. The lens is disposed with respect to the LED board such that the lens is illuminated from a back side. One or more mechanical couplers snap fit the apparatus to a junction box installed and positioned above the ceiling such that when the apparatus is snap fit to the junction box through the opening of the ceiling, the housing appears to be surface mounted to the ceiling.

A lighting fixture includes a housing, a first light source, a light guide plate, and a second light source. The housing has an inner cavity and a mounting hole, the mounting hole communicates the inner cavity with an external environment of the housing, the light guide plate is installed in the mounting hole. A side of the light guide plate faces the inner cavity, the other side of the light guide plate faces an outside of the housing. The second light source projects second light to the light guide plate, the second light is capable of being projected to the outside of the housing through the light guide plate. The first light source projects first light, and is configured such that the first light is projected to the outside of the housing through the light guide plate, and the housing is a non-light-transmitting housing.

A light fixture includes a light receiver, an electrically-powered light source coupled to the light receiver, and a vessel containing a liquid. The vessel is translucent such that the light from the light source radiates through the vessel. The vessel includes an outer wall and an inner wall that define an enclosed area that receives and contains the liquid. The inner wall defines an open area positioned radially inward from the enclosed area and the inner wall includes a top opening and a bottom opening such that the open area is a through-hole extending through the enclosed area. The vessel is configured such that light emitted from the light source passes through the liquid contained within the vessel.