Lighting device with multiple power sources and multiple modes of operation
DCFirst Claim
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1. A lighting device comprising:
- a number of light sources mounted on a common printed circuit board (PCB);
a controller for distributing power from a main power source and a secondary battery power source to a selective one or more of the light sources according to a first mode and second mode of operation, the first mode of operation being associated with non-emergency illumination and the second mode of operation being associated with emergency illumination;
a battery for powering the selected one or more light sources in the second mode of operation; and
a housing defining a common enclosure for housing the light sources, controller, and battery.
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Abstract
Lighting device having a number of light sources for illumination an area around the lighting device. The lighting device including capabilities for generating illumination when a primary power source is unavailable. The light device may include a secondary power source for use in powering the lighting device when the primary power source is unavailable. The lighting device may include multiple operating modes, optionally depending on the active power source.
101 Citations
21 Claims
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1. A lighting device comprising:
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a number of light sources mounted on a common printed circuit board (PCB); a controller for distributing power from a main power source and a secondary battery power source to a selective one or more of the light sources according to a first mode and second mode of operation, the first mode of operation being associated with non-emergency illumination and the second mode of operation being associated with emergency illumination; a battery for powering the selected one or more light sources in the second mode of operation; and a housing defining a common enclosure for housing the light sources, controller, and battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A lighting system comprising:
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a light socket; a light switch for connecting the light socket to a wireline power supply, the light switch having an on state and an off state, the light switch connecting the light socket to the wireline power supply in the on state and the light switch disconnecting the light socket from the wireline power supply in the off state; a lighting device received within the light socket and having a number of light sources configured to provide illumination, the lighting device including a controller configured to control illumination of the light sources by controlling power flow to the light sources from the wireline power supply and a battery included within the lighting device, the controller controlling the illumination of the light sources according to at least a first and second mode of illumination, the first mode corresponding with a first illumination level and the second mode corresponding with a second illumination level providing less illumination than the first mode, the controller configured to permit the first mode of illumination only if the light switch is in the on state and to permit the second mode of illumination if the light switch is in either of the on or off states. - View Dependent Claims (16, 17, 18)
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19. A method of providing emergency egress lighting, the method comprising:
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transmitting data representing an emergency alert to a lighting device having a number of light sources, a controller, and a battery, the light sources configured to provide illumination with power from a wireline power supply connected to a light socket of the lighting device or the battery included within the lighting device; processing the emergency alert with the controller and controlling the light sources to provide emergency illumination of a portion of an emergency egress path with power from the wireline power supply if the wireline power is available or with power from the battery if the wireline power supply is unavailable; and relaying the emergency alert message to another lighting device for use in providing emergency illumination of another portion of the emergency egress path. - View Dependent Claims (20, 21)
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Specification