A structural light fixture for the ceiling of clean room, such as a clean room for pharmaceutical or electronic research or production, includes an outer U-shaped beam and an inner U-shaped beam. The inner U-shaped beam nests within the outer U-shaped beam. The inner and outer U-shaped beams are mutually reinforcing so that the combination of the two U-shaped beams is stronger and stiffer than either U-shaped beam alone. The top side of the outer U-shaped beam is exposed to the outside of the clean room and includes no perforations so that the outer U-shaped beam is a barrier to gas, particulates, microorganisms or disinfectants that otherwise would pass through the clean room ceiling. The removable inner U-shaped beam includes a lamp and power supply, allowing maintenance of the structural light fixture from the interior of the clean room without interrupting the barrier to contamination created by the structural light fixture.

A lighting system is disclosed herein. The lighting system can include light module for surface, recessed or pendant mounting. The module can include a channel having side walls and an open top and can extend between first and second ends. The module can also include an array of light emitting diodes disposed in the channel and a driver for controlling the light emitting diodes. The module can also include a lens mountable in the open top and a cap selectively engageable with at least one of the first and second ends. The cap can be removed from one of the ends when the module is interconnected with a second light module. The system can also include any one or more of a linking bracket, a positioning bracket assembly, tools for assembling the lens to the channel, and a control module.

A lighting fixture pendant includes, for example, a connector defining an axis between a first end and a second end, a plurality of elements having an aperture therethrough and having portions asymmetrically disposed around the aperture, at least one spacer having a passageway extending from a first end to a second end, a first element having an aperture therethrough, and a second element having an aperture therethrough. The connector extends through the apertures of the plurality of elements, the first element and the second element, and the passageway of the spacer. The first element is adjacent to the first end of the spacer and the second element is adjacent to the second end of the spacer. When the lighting fixture pendant is supported from the first end of the connector, the plurality of elements, the first element, the second element, and the spacer are vertically aligned along the axis.

In accordance with various embodiments, lighting systems features one or more inter-connectable light panels each having multiple light-emitting elements thereon. One or more of the light panels may feature one or more connectors, and associated conductors, for the transmission of power, communication signals, and/or control signals. One or more of the light panels may include sound-absorbing material therebelow and may define one or more apertures and/or cut-out regions that reveal the sound-absorbing material.

An annular LED grow light is disclosed, which comprises a radiator, a light source board, and a power supply box. The light source board is composed of a PCB light board and a plurality of LED lamp beads, wherein the LED lamp beads are arranged on the PCB light board in an annular array about a center. The beneficial effects of the present disclosure are: the photosynthetic photon flux density (PPFD) is distributed more evenly after the LED lamp beads are arranged in an annular array about the center, thus the effective irradiated area is larger, and the cost has been saved.

The present disclosure relates generally to lighting elements, for example, suitable for use illuminating a ceiling. The present disclosure relates more particularly to an illuminated acoustic ceiling element including an acoustic substrate having an upper face and a lower face, an air permeable layer disposed under the lower face of the acoustic substrate and spaced from the acoustic substrate, and a light source supported by the acoustic substrate and configured to emit light through the air permeable layer.

A lighting device is provided, including: an elongate light assembly, including a power connector, the power connector being configured for electrical connection of a power wire; a base, connected to the elongate light assembly; and a head portion, detachably connected to the base, including a threaded connector, the threaded connector being electrically connected with the elongate light assembly; wherein at least one of the power connector and the threaded connector is configured to be electrically connected with a power source.

Disclosed is a lamp with easy assembly and disassembly comprising a power socket and a lamp body. The power socket comprises a housing and a power supply assembly which is provided in the housing, the power supply assembly is connected with a power supply, the housing is provided with at least one mounting slot which is provided with a press-type locking socket and PCB probes, and the PCB probes are electrically connected with the power supply assembly, a mounting plug with an accommodating groove is provided on the lamp body, a press-type locking plug and a PCB board are provided in the mounting plug; the PCB board is electrically connected to the light source of the lamp body; when the mounting plug is inserted into the mounting slot, the push-type locking plug is inserted into the push-type locking socket and is locked.

Assemblies, systems and methods for balanced suspension of luminaires are provided. In some embodiments a luminaire mounting and suspension assembly is provided comprising a mounting unit and a plurality of suspension units. Each suspension unit comprises a housing coupled to the mounting unit and a yoke pivotally coupled to the housing at a pivot point. The yoke comprises a pair of cable grippers, each cable gripper positioned on opposing sides of the pivot point and configured to grip a suspension cable for suspending a luminaire, wherein an axis of the pivot point is perpendicular to axes of the suspension cables and whereby free rotation of the yoke about the pivot point evenly balances tension between the suspension cables. In some embodiments a luminaire system is provided comprising a mounting and suspension assembly and a luminaire suspended by the assembly. In some embodiments a method of suspending a luminaire is provided comprising providing and suspending a luminaire system and employing the system to evenly balance tension between pairs of suspension cables.

The solid content contains a resin component (A) and a filler (B). The resin component (A) includes at least one of a fluorine-containing copolymer (a1) or a silicon-containing copolymer (a2). The fluorine-containing copolymer (a1) includes a fluorine-containing segment and an acrylic segment containing no fluorine or silicon. The silicon-containing copolymer (a2) includes a silicon-containing segment and an acrylic segment containing no fluorine or silicon. The filler (B) has a mean particle size falling within a range from 10 nm to 200 nm.