A concealed office fan lamp is provided, which includes a stop device, a support and a fan blade. A lamp is arranged at the bottom of the support, a cavity is arranged in the support, the fan blade is electrically connected with a driving mechanism to make it rotatably arranged in the cavity, and the stop device is arranged on the support and/or the fan blade to detect the motion state of the fan blade. According to the motion state, the fan blade is stopped and hidden in the cavity. By providing a stop device on the fan lamp, the fan blade can be accurately stopped and hidden in the cavity, the person under the fan lamp cannot see the fan blade when the fan lamp stops working, making the fan lamp more beautiful as a whole.

A track lighting is provided, which mainly includes a track structure and a light source installation base. The track structure includes an installation base, a first lateral wall and a second lateral wall circuitously extending from the two sides of the installation base respectively. The first locking portion at one end of the first lateral wall is engaged with the first buckle portion of the light source installation base, and the second locking portion at one end of the second lateral wall is engaged with the second buckle portion of the light source installation base. Besides, after the stopper structure of the light source installation base is inserted into the stopper space between the stopper element and the corresponding stopper portion of the second lateral wall, the stopper element and the corresponding stopper portion are at the two sides of the stopper structure.

A ceiling lamp is disclosed including a first lamp, a second lamp, and an angle adjusting and locking device. The first lamp and the second lamp are arranged at an interval, and the second lamp and the first lamp are rotatable with respect to each other. The angle adjusting and locking device is connected with the first lamp and the second lamp, and the angle adjusting and locking device is configured for locking the first lamp and the second lamp after they are rotated with respect to each other.

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.

An integrated ceiling device includes a housing retaining an electronic assembly, a heat sink having a central opening, a light source coupled onto the heat sink, the housing is coupled with and disposed at least partly above the heat sink, and a central vertical axis of the housing aligns or is in proximity with the central opening of the heat sink.

An integrated ceiling device includes a housing retaining an electronic assembly, a heat sink having a central opening, a light source coupled onto the heat sink, the housing is coupled with and disposed at least partly above the heat sink, and a central vertical axis of the housing aligns or is in proximity with the central opening of the heat sink.

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.

A lighting fixture configured to expand and collapse, and methods for expanding and collapsing a light fixture are disclosed. Embodiments of the lighting fixture include a lighting fixture with a movable section that collapses into at least one cavity in a base housing for storage and shipment, and extends from the cavity for operation. In the collapsed configuration the lighting fixture fits into a smaller container than when the lighting fixture is in the expanded configuration. In some embodiments a locking member locks the movable section into its extended position and can be retracted by a user by manually disengaging the locking member. Accessories and extenders that can be attached to the lighting fixture can be stored in the one or more cavities into which the movable section is stowed in the collapsed configuration.