An emergency lighting module for providing emergency power to a solid state luminaire includes a microcontroller, and a detector coupled to the microcontroller and configured to detect a status signal indicative of a status of an AC line voltage, the emergency lighting module is configured to output a dimming control signal to the solid state luminaire in response to a reduction of the AC line voltage. The microcontroller is further configured to output a select signal to the solid state luminaire to cause the solid state luminaire to dim in accordance with the dimming control signal when the dimming control signal is output.

A redundant lighting driver system includes a primary driver and a backup driver. The primary driver and the backup driver are electrically coupled to receive an alternating current (AC) power from a power source. The primary driver or the backup driver power a light source at a time. The primary driver is configured to provide a primary power to the light source, and the backup driver is configured to provide a backup power to the light source when the primary power is unavailable. The backup driver is designed to withstand a larger power surge than the primary driver.

[Problem] To make it possible to visually recognize emergency broadcast audio that is output from a speaker to residents in a coverage area of an emergency broadcast system.

[Solution] The present invention comprises an emergency broadcast device 2 that can switch between any normal broadcast and an emergency broadcast that includes an emergency alert, both broadcasts being constituted by audio signals, and one or more speaker units 3 to which the audio signal is transmitted from the emergency broadcast device 2 through a speaker line 4, wherein: the speaker unit 3 includes a speaker 32 to which the audio signal of the normal broadcast and the audio signal of the emergency broadcast are input, a power receiving circuit 33 that extracts a direct-current power supply from the audio signal of the emergency broadcast, and a lighting controller 34 that performs lighting control on a light emitting element 35 by using the direct-current power supply; and the light emitting element 35 is not lit during the normal broadcast, but is lit during then emergency broadcast.

A method executable by a computing system using a lighting system to navigate a building space, the method may include receiving a notice of an event. The method may include determining a location of the event and a type for the event and determining one or more navigation paths along the plurality of pathways within the building space for which one or more persons are to navigate to an egress of the building, based on the location and type of the event. The method may include causing one or more hubs of a plurality of hubs corresponding to the one or more navigating paths to provide the one or more visual indicators.

One or more reduced, same form, light emitting apparatus(es) spaced apart and configured to be mounted at various heights and/or spacing employ the same power consuming light source input that is covered by a symmetrical or asymmetrical redirecting linear lens optics apparatus that is configured for use in a range of mounting heights to uniformly illuminate at least one legal path of egress below. An exemplary light apparatus is a horizontally rotatable device configured to project an illuminated directional building evacuation symbol/text/image onto an illuminated egress path below.

A display system may include a plurality of light emitting diodes to emit light, where each of the light emitting diodes are connected in parallel and a plurality of first switches respectively coupled to the plurality of light emitting diodes. A first switch of the plurality of first switches is coupled in parallel to a first light emitting diode. The first switch may short the first light emitting diode of the plurality of light emitting diodes through a defined resistor having a defined value that therefore draws a defined short circuit current.

A lighting system for an emergency vehicle, the lighting system including one or more light sources, and a processor, where the processor is configured to receive one or more compliance data from each light source of the one or more light sources, receive one or more location data from each light source of the one or more light sources, compare the compliance data and the location data with a compliance standard, determine a compliance minimum and a compliance maximum for one or more characteristics for each light source of the one or more light source, and adjust the one or more characteristics of each light source of the plurality of light sources based on one or more user commands, wherein each light source of the plurality of light sources operates at or above the compliance minimum and at or below the compliance maximum for each light source.

A power pedestal includes: a pedestal member comprising a base structured to be attached to a platform and an enclosure extending from the base; a leakage current detection unit structured to detect a leakage current in the water in a slip and to output a leakage current detection signal based on the detected leakage current; and a marina safety status indication unit comprising: a control circuit connected to the leakage current detection circuit and structured to determine a real time marina safety status in the water within the slip and to output a marina safety status signal based on the determination; and a marina safety status indication device including a rub rail and a marina safety status indicator embedded in the rub rail and connected to the control circuit, the marina safety status indicator structured to provide the real time marina safety status based on the marina safety status signal.

A display system may include a plurality of light emitting diodes to emit light, where each of the light emitting diodes are connected in parallel and a plurality of first switches respectively coupled to the plurality of light emitting diodes. A first switch of the plurality of first switches is coupled in parallel to a first light emitting diode. The first switch may short the first light emitting diode of the plurality of light emitting diodes through a defined resistor having a defined value that therefore draws a defined short circuit current.

A load control system has a system controller and a plurality of load control devices which receive power from a power source. The load control system also includes at least one emergency load control device which receives power from a backup power source in the event of a power failure of the power source. The emergency load control device is configured to enter an emergency mode during the power failure of the power source, wherein in the emergency mode, the emergency load control device controls respective electrical loads according to emergency mode preset settings, and the emergency load control device transmits a message to the system controller to indicate the emergency load control device is in the emergency mode. The system controller is configured to transmit a message to the emergency load control device to exit the emergency mode when power from the power source is restored.