A circuit includes an emergency lighting system and an AC/DC converter. An output terminal of the emergency lighting system is electrically connected to a LED load, and the other output terminal LED_ON of the emergency lighting system is electrically connected to a switch S2. The switch S2 is controlled by the emergency lighting system. The emergency lighting system includes an AC input detection module, a switching time detection module and a lithium battery. The AC input detection module is electrically connected to a neutral wire VN and a live wire VL. The switching time detection module is electrically connected between an output terminal of the AC input detection module and the LED_ON terminal. An output terminal of the AC/DC converter is electrically connected to a positive electrode of the lithium battery, and the other output terminal of the AC/DC converter is electrically connected to the LED load.

A housing and an endcap may provide a water-resistant enclosure for an emergency lighting component. An upper side of the housing may include a curved surface extending above a vertical side of the housing. The vertical side may include an inclined surface and an extended edge that provide a first concave opening below the curved surface. A base side of the housing may include a curved surface extending partially below the vertical side. The vertical side may include an additional extended edge and a curved surface that provide a second concave opening where the vertical side joins the base side. The endcap may include a rim that overlaps a portion of the housing. The first or second concave openings may receive fasteners to attach the endcap. Mounting brackets may attach to the first or second concave openings, such as to attach the housing to a surface.

Elevator interior lighting provided by a temporary LED light fixture and power supply installed on or adjacent an elevator canopy. The temporary LED power supply comprises an LED driver and an emergency LED power supply. The LED driver connects to LEDs of the temporary LED light fixture and supplies sufficient power to provide code-compliant temporary lighting in the cab. The emergency LED power supply module connects to one or more emergency LEDs and supplies sufficient power to provide code-compliant emergency lighting in the cab upon loss of primary electrical power. To minimize costs when converting to permanent lighting, additional LED light fixtures can be added and connected to the same temporary LED power supply, and the emergency LED power module may be relocated into a down light power supply to power two or more down lights in the event of a loss of primary electrical power.

An emergency lighting device includes a housing containing a high voltage connection. A light emitter is connected to the housing. A compartment in the housing having an opening is separated from the high voltage connection. A battery is positioned in the compartment and accessible through the opening.

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.

The described embodiments relate to systems, methods, and apparatuses for providing a lighting system that includes backup light emitting diodes (LEDs) that are incorporated into a primary array of LEDs of the lighting system. The backup LEDs can be illuminated when a utility power source for the lighting system becomes unavailable. The backup LEDs can operate from a backup power supply, which can be charged from the utility power source, when the utility power source is available. Furthermore, charging of the backup power supply can be temperature dependent, in order that the backup power supply and/or the charging circuit can be protected from damage caused by operating such components out of an operating specification.

A wireless lighting system for an aircraft evacuation system. The wireless lighting system includes a wireless controller disposed in the aircraft having at least a transmitter configured to communicate an activation under an aircraft evacuation event when the aircraft evacuation system is deployed, and a first light source disposed on the aircraft evacuation system, the first light source configured to provide illumination to the aircraft evacuation system. The wireless lighting system also includes a first energy storage device disposed on the aircraft evacuation system and a first wireless receiver disposed on the aircraft evacuation system and configured to receive the activation signal from the wireless controller. The first wireless receiver is operably connected to the first energy storage device and the first light source and configured to activate the first light source based on the activation signal.

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 containing a high voltage connection. A light emitter is connected to the housing. A compartment in the housing having an opening is separated from the high voltage connection. A battery is positioned in the compartment and accessible through the opening.

A wireless lighting system for an aircraft evacuation system. The wireless lighting system includes a wireless controller disposed in the aircraft having at least a transmitter configured to communicate an activation under an aircraft evacuation event when the aircraft evacuation system is deployed, and a first light source disposed on the aircraft evacuation system, the first light source configured to provide illumination to the aircraft evacuation system. The wireless lighting system also includes a first energy storage device disposed on the aircraft evacuation system and a first wireless receiver disposed on the aircraft evacuation system and configured to receive the activation signal from the wireless controller. The first wireless receiver is operably connected to the first energy storage device and the first light source and configured to activate the first light source based on the activation signal.