Emergency lighting conversion for LED strings
First Claim
1. An emergency lighting apparatus comprising:
- a passive resonant converter circuit configured to be coupled to an emergency lighting module and to an input end of a group of solid state emitters, at which the group of solid state emitters receives a normal operation current from an LED driver,wherein the passive resonant converter circuit is configured to receive an emergency operation current from the emergency lighting module and to provide a converted emergency operation current to the group of solid state emitters at an emergency input of the group of solid state emitters in response to the emergency operation current.
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Accused Products
Abstract
Emergency lighting devices and methods are disclosed. An emergency lighting device includes a passive resonant converter circuit configured to be coupled to an emergency lighting module and to an input end of a group of solid state emitters, at which the group of solid state emitters receives a normal operation current from an LED driver. The passive resonant converter circuit is configured to receive an emergency operation current from the emergency lighting module and to provide a converted emergency operation current to the group of solid state emitters at an emergency input of the group of solid state emitters in response to the emergency operation current. The emergency lighting module may be a fluorescent emergency lighting module.
73 Citations
34 Claims
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1. An emergency lighting apparatus comprising:
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a passive resonant converter circuit configured to be coupled to an emergency lighting module and to an input end of a group of solid state emitters, at which the group of solid state emitters receives a normal operation current from an LED driver, wherein the passive resonant converter circuit is configured to receive an emergency operation current from the emergency lighting module and to provide a converted emergency operation current to the group of solid state emitters at an emergency input of the group of solid state emitters in response to the emergency operation current. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An emergency lighting device, comprising:
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a first group of solid state emitters configured to emit light of a first color and having an input end and an output end; and a passive resonant converter circuit coupled to an emergency lighting module and to the input end of the first group of solid state emitters, wherein the first group of solid state emitters is configured to receive a normal operation current from an LED driver at the input end of the group of solid state emitters, wherein the passive resonant converter circuit is configured to receive an emergency operation current from the emergency lighting module and provide a converted emergency operation current to the first group of solid state emitters at an emergency input of the first group of solid state emitters. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method of operating an emergency lighting device, comprising:
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receiving a normal operation current from an LED driver at a group of solid state emitters such that the normal operation current is input from the LED driver at the input end of the group of solid state emitters and output at an output end of the group of solid state emitters; and upon determination of an emergency mode, receiving an emergency operation current from an emergency lighting module at a passive resonant converter circuit coupled to the emergency lighting module and the input end of a group of solid state emitters; and providing a converted emergency operation current from the passive resonant converter circuit to the group of solid state emitters at an emergency input of the group of solid state emitters in response to the emergency operation current. - View Dependent Claims (18, 19, 20)
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21. An emergency lighting device comprising:
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a first group of solid state emitters configured to emit light of a first color having an input end and an output end; a second group of solid state emitters configured to emit light of a second color having an input end and an output end; and a third group of solid state emitters configured to emit light of a third color and having an input end and an output end, wherein the first, second and third groups of solid state emitters are configured to receive a normal operation current from an LED driver during normal mode at the input ends of the first, second and third groups of solid state emitters; and a passive resonant converter circuit configured to be coupled to an emergency lighting module and to an emergency input of the first, second and third groups of solid state emitters, wherein the passive resonant converter circuit is configured to receive an emergency operation current from the emergency lighting module during emergency mode and provide a converted emergency operation current to the first, second and third groups of solid state emitters at the emergency input. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. A method of operating an emergency lighting device, comprising:
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receiving a normal operation current from an LED driver at a first group of solid state emitters, a second group of solid state emitters and a third group of solid state emitters; upon determination of an emergency mode, receiving an emergency operation current from an emergency lighting module; and providing a converted emergency operation current to the first, second and third groups of solid state emitters at an emergency input located between the input end and the output end of the first group of solid state emitters, wherein the converted emergency operation current continues through a first diode electrically connecting the first group of solid state emitters to the second group of solid state emitters, continues through a second diode electrically connecting the second group of solid state emitters to the third group of solid state emitters, and is output at an emergency output located between the input end and the output end of the third group of solid state emitters. - View Dependent Claims (32, 33, 34)
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Specification