An emergency lighting device includes a housing, a light emitter positioned in the housing, a control circuit positioned in the housing and operatively connected to the light emitter, an indicator light positioned in the housing, and a fault indicator circuit positioned in the housing and operatively connected to the indicator light. The fault indicator circuit is configured to monitor the light emitter, analyze activation of the light emitter, and activate the indicator light based on the analysis of the activation of the light emitter.

An emergency lighting device includes a housing, a light emitter positioned in the housing, a control circuit positioned in the housing and operatively connected to the light emitter, an indicator light positioned in the housing, and a fault indicator circuit positioned in the housing and operatively connected to the indicator light. The fault indicator circuit is configured to monitor the light emitter, analyze activation of the light emitter, and activate the indicator light based on the analysis of the activation of the light emitter.

A vehicle lighting device includes a socket; a substrate; and one first and four second light emitting elements. A square luminance distribution region is defined on light irradiation sides of first and second light emitting elements. A center of distribution region overlaps central axis of device. Distribution region is equally divided into four square first regions whose corners overlap center of distribution region. Each of first regions is equally divided into nine square second regions. A length of one side of second region is 0.8 mm. Luminance of distribution region is 90% or more of a total luminance of light emitted from device. In twenty second regions arranged along sides of distribution region, luminance of one second region is 2% or less of total luminance. In sixteen second regions provided inside twenty second regions, luminance of one second region is 3% or more and 10% or less of total luminance.

A vehicle lighting device includes a socket; a substrate; and one first and four second light emitting elements. A square luminance distribution region is defined on light irradiation sides of first and second light emitting elements. A center of distribution region overlaps central axis of device. Distribution region is equally divided into four square first regions whose corners overlap center of distribution region. Each of first regions is equally divided into nine square second regions. A length of one side of second region is 0.8 mm. Luminance of distribution region is 90% or more of a total luminance of light emitted from device. In twenty second regions arranged along sides of distribution region, luminance of one second region is 2% or less of total luminance. In sixteen second regions provided inside twenty second regions, luminance of one second region is 3% or more and 10% or less of total luminance.

A lamp tube with anti-shock protection and compatible with a plurality of current stable power supply modes is provided. The lamp tube includes a plurality of lighting loads and a control circuit. The control circuit includes an electric shock protection circuit, a filtering and constant current driving circuit, an electronic rectifier circuit and a fast-start inductive rectifier detection and driving circuit.

An emergency lighting unit including a power input. a light source, a battery configured to receive charging current from the power input. wireless communication circuitry configured to receive a wireless communication signal, and a controller connected to the wireless communication circuitry. The controller is configured to control the charging of the battery based on the wireless communication signal.

In embodiments of the present invention improved capabilities are described for systems and methods that employ a control component and/or power source integrated in an LED based light source to control and/or power the LED light source wirelessly. In embodiments, the LED based light source may take the form of a standard light bulb that plugs into a standard lighting socket or fixture.

In embodiments of the present invention improved capabilities are described for systems and methods that employ a control component and/or power source integrated in an LED based light source to control and/or power the LED light source wirelessly. In embodiments, the LED based light source may take the form of a standard light bulb that plugs into a standard lighting socket or fixture.

A LED lighting device (80) is installable on a standard wall fitting (10). The LED lighting device (80) includes an inductive power transmitter (84) including a housing (146), a tee top (112) on the housing (146) including a flat inductive power transfer face (120), and an inductive transmitter coil (154) located within the tee top (112). A LED lamp module (86) of the LED lighting device (80) includes a LED lamp body (184) containing one or more LEDs (180), a threaded male portion (131) formed on the LED lamp body (184) and shaped to threadably engage the standard wall fitting (10), an inductive power receiver pad (132) located adjacent a flat surface (120) of the threaded male portion (131), and an inductive power receiver coil (166) located in the LED lamp body (184). When the LED lighting device (80) is installed on the standard wall fitting (10), the LED lamp module (86) is wirelessly powered by the inductive power transmitter (84).

A method is provided for removing a light-emitting diode (LED) module from a luminaire that has a controller and a housing. The housing encloses an optical system that includes the LED module and other optical devices. The method includes electrically uncoupling an LED circuit board of the LED module from the controller. The method further includes mechanically uncoupling the LED module from the luminaire without removing other optical devices of the optical system from the housing.