A lighting device and system having a faceplate and a backplate. The faceplate or the backplate may have an arm or a set of arms having electrical conductors to connect or couple to the electrical contact points of an outlet, plug, or switch. The operational modes may be in an emergency lighting mode and a nightlight mode. The voltage source can be connected to a light source or sensor through the control circuit or the switch, and the light source may be activated based on the output of the sensor. A controller is connected to the sensor can send or receive wireless signals through a wireless module.

Laser light is coupled to optical fibers arranged in a sheet, which may be in the form of netting, mesh or fabric. Scattering centers or bends in the optical fibers allow the coupled light to escape from the sides of the fibers. Depending on the selection of wavelengths for the lasers, the resulting luminous sheet may be used for illumination of crops grown in vertical farms. The laser wavelengths excite plant photopigments for predetermined physiological responses, and the light source intensities may be temporally modulated to maximize photosynthesis and control photomorphogenesis responses. Each laser may be independently controlled, and at least one laser may emit ultraviolet-C radiation. The luminous sheet may be used for purification of air flowing through an air duct.

The present invention relates a solar-powered, floating, fountain lamp, comprising a light-emitting elements, a fountain housing, and a solar panel, and the fountain housing acts not only as a three-dimensional lampshade for a first light-emitting portion, but also as a floating portion of the fountain lamp, and the fountain housing is substantially formed by a saucer-shaped cabin and a cylindrical lower part that are integratedly connected to each other, in which the saucer-shaped cabin located in an axially upper part of the fountain housing has an outer peripheral surface that is smooth and curved, and the plurality of light-emitting elements each project a light beam in a different direction, and the light-emitting elements projecting the light beams outward the fountain housing form point light sources at a top of the fountain lamp, the point light sources on the top act as a second light-emitting portion, and the light-emitting elements projecting the light beams inward the fountain housing form the first light-emitting portion, and the first light-emitting portion provides uniform lighting through the three-dimensional lampshade formed by outer walls of the saucer-shaped cabin and of the cylindrical lower part that are smoothly connected.

Provided is a refrigerator. The refrigerator is characterized by enabling at least a part of a refrigerator door to be selectively transparent by a user's operation, such that the user sees through an inside of the refrigerator while the refrigerator door is closed.

A refrigerator includes a cabinet forming a storage space, a main door that opens and closes the storage space while defining an opening part that is in communication with the storage space, a sub-door mounted to the main door and configured to open and close the opening part, the sub-door including a panel assembly for allowing selective viewing of an inside of the opening part, the injection port is provided at a lower side of the sub-door to direct an insulating foaming solution to a space in the sub-door, a detection device for detecting an operation of a user, a lighting unit inside the refrigerator that turns on based on user operation to allow selective viewing of the inner side of the opening part, and a display unit inside the refrigerator at a position corresponding to the panel.

According to an aspect of this disclosure, a ventilation and lighting system including a main housing having an inlet opening and a discharge opening, a blower and motor assembly disposed within a housing and operable to move air through the inlet and outlet, a grille configured to be located at the inlet opening, the grille having a cavity and a plate defining a plurality of apertures through which air may move, and one or more lighting elements arranged within the cavity and an optical component covering the cavity. The system is arranged such that light developed by the one or more lighting elements mixes within the cavity and transmits through the optical component covering the cavity, and the system further includes a controller that coordinates operation of the blower and motor assembly and the one or more lighting elements from a remote location.

A lighting system includes two or more lighting fixtures, each comprising a housing, at least one light source mechanically supported by the housing, at least one pipe thermally coupled to the housing to carry a fluid coolant, an AC power port, and at least one network communications port. The AC power ports of respective lighting fixtures are coupled together with a plurality of industrial power cables without using one or more conduits for the plurality of industrial power cables. The network communications ports of the respective lighting fixtures are coupled together with a plurality of waterproof network communications cables. In one example, a lighting system kit comprises two or more lighting fixtures having an AC power port comprising an industrial type connector. The kit further comprises multiple industrial power cables and one or more industrial drop tee cables.

A lightbar assembly connector for use in a modular lightbar system to connect two or more lightbar assemblies together and having a design and configuration that enables the lightbar assembly connector and lightbar assemblies to be connected by moving the lightbar assembly connector in a direction generally transverse to the longitudinal axis of the lightbar assembly (or by moving the lightbar assembly in a direction generally transverse to the major surface of the lightbar assembly connector). It is thus possible to assemble a modular lightbar system comprised of a plurality of lightbar assemblies and lightbar assembly connectors, any of which are easily removable, replaceable, or serviceable without having to remove or move lightbar assemblies that do not need to be replaced or serviced.

Lighting system including visible-light source, optical system, mounting system, and control system. Visible-light source includes plurality of semiconductor light-emitting devices (SLEDs) and selectably generates: visible-light emissions having cyan-ish color point; and visible-light emissions having orange-ish color point. Optical system and mounting system are integrated with visible-light source. Optical system is arranged to combine together, into combined light emissions, visible-light emissions from SLEDs among plurality of SLEDs. Mounting system is arranged for directing combined light emissions as up-light emissions. Control system is coupled with visible-light source and selectably causes visible-light emissions to have cyan-ish color point or orange-ish color point. Control system and optical system cooperatively form combined up-light emissions as having dynamic spectrum for emulating orange-ish sky color at time of day selected to represent sunrise sky or to represent sunset sky, changing over time for emulating cyan-ish sky color at another time of day selected to represent mid-day sky.

A lighting device includes a plurality of main bodies, a first casing, a plurality of second casings, a control module, and a plurality of light-emitting modules. One side of each of the plurality of main bodies has the light-emitting modules arranged thereon, and the light-emitting module is electrically connected to the control module. One second casing is fixedly disposed on another side of each of the plurality of main bodies that is opposite to the one side where the light-emitting module is disposed, and a passage is formed between the second casing and the main body. The control module with a plug-in design is disposed in the first casing, so that the control module is arranged away from the plurality of light-emitting modules.