A light bar includes an elongated body, a light source within said body and connectors disposed at the ends of the body. The connectors are sized and shaped to attach the light bar to a power bar. An interference fit is provided with the power bar to maintain the light bar in place. The light bar and the power bar preferably form a part of a modular lighting system with many different types of light sources.

A lighting device which supplies a light-emitting element with a current modulated based on a visible light communication signal includes: a DC power supply circuit which supplies the light-emitting element with a first voltage that is a DC voltage; and a current control circuit which (i) includes a current control element connected in series to the light-emitting element, (ii) switches the current control element between a first state and a second state based on the visible light communication signal, the first state and the second state differing in electrical impedance, and (iii) adjusts, to a constant current value corresponding to a constant current instruction signal, a current flowing through the light-emitting element in a period in which the current control element is in the first state, by controlling the current control element.

The present invention relates to a lighting system that enhances installation conditions, avoiding risks therein and during operation of the system over time, and which facilitates insertion of the electrical contacts of the functional unit and allows its concealment without modifying the conductive properties thereof.

The present disclosure discloses a track, an adapter, and a track light, in a height direction, a side of the track is provided with an installation portion, and another side of the track is provided with a frame, the frame encloses to form an accommodating space with an opening direction that is away from the installation portion, the installation portion is used to connect with an installation foundation, the accommodating space is used for accommodating an adapter, and the track is provided with a first magnetic attraction piece, the first magnetic attraction piece is used for magnetically connecting with the adapter, and the track is provided with a fastener holder, the track light includes the adapter, adapted to the track.

A linkable linear light emitting diode (LED) system provides apparatus and method for mechanically, optically, and electrically linking multiple LED modules disposed over a wide and separated area of a ceiling system. Openings can be cut in ceiling tiles of a drop ceiling system and the LED lighting modules are coupled to the tile through the opening, with the tile being sandwiched between different portions of the module. A remote driver system is placed within the drop ceiling above the tiles and provide multiple connectors for powering a multitude of lighting modules. Certain of the LED lighting modules include both input and output connectors for both receiving power or data and providing power or data to other modules. In this manner, some of the modules act as master LED lighting modules and those receiving power and/or data therefrom are act as slave modules.

A light bar includes an elongated body, a light source within said body and connectors disposed at the ends of the body. The connectors are sized and shaped to attach the light bar to a power bar. An interference fit is provided with the power bar to maintain the light bar in place. The light bar and the power bar preferably form a part of a modular lighting system with many different types of light sources. s:\jbuchman\clientsfiles\sonnemancontemporary visions\187lightbar connected\1991_187non_prov4th.docx s:\jbuchman\clientsfiles\sonnemancontemporary visions\187lightbar connected\1991_187non_prov4th.docx

A lighting system is disclosed which provides dynamic lighting control of each light on a rail lighting system. The lighting system is able to change settings of each light within a track lighting or rail lighting system based on motion, user preferences, lighting conditions, or security parameters. Light intensity and color can be set and scheduled based on user control and programming. Optical sensors may also be used to provide control input for the track lighting or rail lighting.

The present application relates to the technical field of luminaire, and provides a track head for mounting a lamp body on a track strip, the lamp body comprises a mounting rack, the track head comprises a cassette body fixed to the mounting rack and a cover body movably mounted on the track strip, the cover body is detachably mounted on the cassette body, a plurality of first resilient sheets which are electrically connected to the lamp body are provided in the inner part of the cassette body, a plurality of second resilient sheets which are electrically connected to the first resilient sheets respectively are provided in the inner side of the cover body, a conductive structure is provided between the cover body and the track strip for electrical interconnection with each other. The track head of the present application has a cassette body fixed and electrically connected to the lamp body, the cover body adapted to the track strip which can be selected and mounted to the cassette body, and the second resilient sheets are abutting against and electrically connected to the first resilient sheets, and the cover body is mounted in the track strip so as to fix the lamp body to the track strip, so that the selection of the lamp body is not restricted by the structure of the track strip and the installation and maintenance costs are reduced.

The multiple function LED project light is a hand-held and powered by DC power, and the project light has front lens has project magnify lens fit-into or install-on or built-in on center position. The project lens has below position outer-tube set assembled together so outer-tube can envelope or surrounded the lower position separated inner-tube which has image-forming unit within. While the project head move away from the project light neck by screw-thread or other extend construction to make distance between the magnify lens and image forming-unit changed to get focus adjustment functions. The said Project light may has self-prong, or project light fit within the hold-base which has prong-set both get AC current through the AC-to-DC circuit to get desired DC power for LED or SMD-LEDs or Dip-LEDs or COB-LED or other DC operated electric components to use. The said project light at least have project image function and flashlight functions or-and other more different functions light select from market available types.

A device having built-in digital data means is powered by an unlimited power source for a lamp-holder, LED bulb, or light device connected to unlimited power source by prongs or a base that can be inserted into a socket that would otherwise receiving a bulb. The device may take the form of a webcam having auto tracking functions and retractable prongs that plug directly into a wall outlet.