The invention relates to a power supply unit (A) and a method for operating lighting means (6). The emergency power supply unit (A) for operating an emergency lighting means (6), preferably comprising at least one LED, the emergency power supply unit (A) comprising: an energy storage unit (2) configured to providing a battery supply voltage (V.sub.Bat) in case of a mains voltage loss; a monitoring unit (12) configured to monitor the battery supply voltage (V.sub.Bat) value; and a controlling unit (5) configured to control the operation of the emergency power supply unit (A) based on the actual battery supply voltage (V.sub.Bat) value; wherein in a first operating mode of the emergency power supply unit (A), an emergency light (60) is switched-on; wherein in a second operating mode of the emergency power supply unit (A), the controlling unit (5) is non-operative and the emergency light (60) is switched-off; and wherein in a third operating mode, the battery supply voltage (V.sub.Bat) is galvanically isolated from the controlling unit (5) by a switching means (11).

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.

A light unit executes up to three different functions (cabin area illumination, individual/dedicated/decorative illumination and emergency illumination) and an emergency illuminated sign unit, each one with an internal controller and a rechargeable capacitor. An example non-limiting embodiment also provides a cabin light system and an emergency lighting system, where each illumination unit (light source or illuminated sign) is as described above.

Devices, systems, and methods for generating a lighting system analysis are described herein. In some examples, one or more embodiments include a computing device comprising a memory and a processor to execute instructions stored in the memory to connect to a lighting device of an emergency lighting system of a facility, retrieve lighting information about the lighting device, and generate a lighting system analysis for the lighting device based on the retrieved lighting information.

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 system for managing emergency lighting is generally described. In particular, the present disclosure relates to self-tests and predictive life expectancy operations of emergency lighting systems. Further, the present disclosure relates to an automated system and method for performing self-tests and predicting emergency lighting fixture life expectancy. In the exemplary embodiments, emergency lighting system tests may be automatically scheduled, carried out, and evaluated.

A system for managing emergency lighting is generally described. In particular, the present disclosure relates to self-tests and predictive life expectancy operations of emergency lighting systems. Further, the present disclosure relates to an automated system and method for performing self-tests and predicting emergency lighting fixture life expectancy. In the exemplary embodiments, emergency lighting system tests may be automatically scheduled, carried out, and evaluated.

Disclosed is an emergency illumination circuit, including an LED driving module, an emergency light source, a main illumination light source, a switch module and an emergency illumination detection module. An input end of the LED driving module and a detection end of the emergency illumination detection module are both used for being connected to a power source; an output end of the LED driving module is connected to an input end of the switch module; the main illumination light source includes a low color temperature light source and a high color temperature light source; and an output end of the emergency illumination detection module is connected to the emergency light source. The multi-color temperature illumination and emergency flashlight functions are realized by a switch module. when the emergency illumination detection module detects that the mains electricity switch is turned off, the emergency light source is started.

The invention relates to a power supply unit (A) and a method for operating lighting means (6). The emergency power supply unit (A) for operating an emergency lighting means (6), preferably comprising at least one LED, the emergency power supply unit (A) comprising: an energy storage unit (2) configured to providing a battery supply voltage (V.sub.Bat) in case of a mains voltage loss; a monitoring unit (12) configured to monitoring the battery supply voltage (V.sub.Bat) value; and a controlling unit (5) configured to controlling the operation of the emergency power supply unit (A) based on the actual battery supply voltage (V.sub.Bat) value; wherein in a first operating mode of the emergency power supply unit (A), an emergency light (60) is switched-on; wherein in a second operating mode of the emergency power supply unit (A), the controlling unit (5) is non-operative and the emergency light (60) is switched-off; and wherein in a third operating mode, the battery supply voltage (V.sub.Bat) is galvanically isolated from the controlling unit (5) by a switching means (11).

Disclosed is a dimming control circuit compatible with emergency lighting, and a method. The dimming control circuit includes a main control circuit; a first port circuit, where an input terminal of the first port circuit is electrically connected to an external automatic dimming circuit, and an output terminal of the first port circuit is electrically connected to a corresponding input terminal of the main control circuit; and a second port circuit.