An isolation transformer boost system. The system includes a power supply and an isolation transformer. The isolation transformer includes a primary winding electrically connected to the power supply, a secondary winding, a first voltage tap, and a second voltage tap. Wherein the isolation transformer is configured to, in response to a command from an electronic processor, disconnect a connection from the second voltage tap and establish a second connection from the first voltage tap, wherein the command is based on an electrical characteristic measurement of the power supply exceeding an upper limit threshold for a predetermined period of time.

A power management system for a lighting circuit may include a grid shifting controller that includes a processor and a connection to an external power source. The power management system may also include a communication interface associated with the grid shifting controller. The grid shifting controller may be configured to provide control information to a processor of at least one grid shifting electrical fixture over the communication interface, the control information being configured to direct the at least one grid shifting electrical fixture on the use of power from the external power source and an energy storage device associated with the at least one grid shifting electrical fixture.

Disclosed is a retractable lighting fixture having a retractable LED lighting layer. One or more optical layers (40, 240A/B, 340A/B, 440) may optionally be provided over the LED lighting layer (30, 230, 330, 430). The optical layer(s) and the LED lighting layer may optionally be movable relative to one another between at least being in an expanded spaced relation to one another and a compressed relation to one another. One or more LEDs (34, 134, 234A/B, 334A/B, 434) on the LED lighting layer may be individually controllable and such LEDs (34, 134, 234A/B, 334A/B, 434) may be selectively extinguished when they are in a retracted position.

This document describes an interactive cord with integrated light sources. An interactive cord includes a cable, and a fabric cover that covers the cable. The fabric cover includes one or more conductive threads woven into the fabric cover to form one or more capacitive touchpoints which are configured to enable reception of touch input. The fabric cover further includes one or more light sources. A controller, implemented at the interactive cord or a computing device coupled to the interactive cord, can detect touch input to a capacitive touchpoint and trigger one or more functions. In addition, the controller can control the light sources to output light to visually indicate a position of the capacitive touchpoint on the fabric cover and/or to provide feedback by outputting light responsive to detecting touch input to a respective capacitive touchpoint.

The invention provides a lighting device (100) configured to provide lighting device light (101). The lighting device (100) comprises a plurality of light sources (200) configured to provide light source light (201), the plurality of light sources (200) comprising at least a first light source (210) configured to generate first light source light (211) and a second light source (220) configured to generate second light source light (221). The lighting device further comprises a light guide (300) comprising: a luminescent material (310) excitable by the light source light (201), and configured to provide luminescent material light (311), wherein the luminescent material (310) is configured to reabsorb at least part of its luminescent material light (311), a light exit window (330) for escape of the luminescent material light (311) from the light guide (300), and a plurality of light incoupling areas (320) arranged perpendicular to the light exit window (330) and comprising at least a first light incoupling area (321) configured at a first distance (d1) from the light exit window (330), and a second light incoupling area (322) configured at a second distance (d2) from the light exit window (330). The first light source (210) is configured to provide said first light source light (211) to the first light incoupling area (321), wherein the second light source (220) is configured to provide said second light source light (221) to the second light incoupling area (322), wherein the first distance (d1) is unequal to the second distance (d2). The lighting device further comprises a control unit (500) arranged for controlling the color temperature of the lighting device light by independently controlling the plurality (m) of light sources (200) dependent on the distance of each light source from the light exit window (330).

A lighting device (100) is provided comprising optically transmissive emitters and receivers. The receivers are configured to receive power via an optical signal transmitted from a light source (102). Furthermore, the receiver is provided with functionality for converting the optical signal to electrical power and supply an emitter with the electrical power. The optical signal may further comprise an address such that a receiver-emitter pair of the device may be wirelessly individually addressed and controlled. The optical signals of the device are not guided but are free to propagate through optically transmissive receivers, optically transmissive emitters or other optically transmissive materials of the lighting device. This enables a lighting device which provides new light effects in a simple manner.

The disclosure provides for a visibility safety strip device, articles, garment, and applications thereof. The disclosure also provides for a lightweight and ultra-bright visibility safety strip and associated methods of promoting the visibility of the wearer, for example, in low-light environments. The disclosure provides for a safety garment that utilizes a specific performance fabric structural under layer, overlaid with a technical retroreflective film to indicate a passive visibility. In an aspect the disclosure also provides for an embedded custom color and functionality light emitting diode (“LED”) and/or organic light-emitting diode (“OLED”) to refract light through the retroreflective film to indicate an active visibility.

A luminaire includes: a light-emitting module; a base having a front surface on which the light-emitting module is disposed; a cover which is translucent and covers the light-emitting module: a controller which is disposed on a back surface of the base and controls the light-emitting module; a first antenna which transmits and receives a first polarized wave; and a control wire which connects the controller and the first antenna. The control wire includes an exposed portion which is a portion of the control wire in a longitudinal direction of the control wire and which is disposed between the base and the cover to transmit and receive a second polarized wave that differs from the first polarized wave in a polarization direction.

An outdoor loudspeaker that is weather resistant and includes environmental lighting is described. The lamp is mounted to a cap at the top of the loudspeaker. An audio driver is mounted below the lamp. A system outdoor loudspeakers is also described. The lighting circuitry and the audio circuitry is separate, e.g., separate conduits and wiring in the loudspeaker. The cap can include a light guide, e.g., a lens centrally mounted in the cap or an opaque cover to direct the light downwardly and outwardly. At least part of the loudspeaker can be mounted underground and, in the case of a sub-woofer, the entire chamber can be mounted below ground.

A power over Ethernet (PoE) interface device includes a knockout adapter. The knockout adapter is configured for mounting to a conduit knockout opening in an LED luminaire. The interface device includes a power assembly having an input section and an output section. The power assembly is connected to the knockout adapter such that the output section is positioned inside the luminaire when the knockout adapter is mounted to the luminaire. The power assembly further includes a data connector mounted to the input section. The data connector is configured to receive PoE signals from a data cable coupled to the data connector. Power output terminals are mounted to the output section and electrically coupled to the data connector. The power output terminals may be configured to couple the PoE signals from the data connector to an LED light source in the luminaire.