Architectures for LED Lighting Assemblies
A modular light emitting diode (LED), remote phosphor, and other lighting technologies lighting assembly includes a plurality of lighting subassemblies and a power supply electrically coupled with the plurality of lighting subassemblies in parallel such that each of the plurality of lighting subassemblies receives electrical power from the power supply in parallel with the other of the plurality of lighting subassemblies.
1 . A modular lighting assembly, comprising:
a first lighting subassembly, comprising:
a plurality of light elements of a first type or that produce light of a first wavelength;
a connector for removably mounting the first subassembly to the assembly; and
a power input at which power is received for illuminating the light elements of the first lighting subassembly;
a second lighting subassembly separated from the first lighting subassembly, comprising:
a plurality of light elements of a second type that is different from the first type or that produce light of a second wavelength that is different from the first wavelength;
a connector for removably mounting the second subassembly to the assembly; and
a power input at which power is received for illuminating the light elements of the second lighting subassembly;
a single power supply that is connected to the power input of the first lighting subassembly and provides power to the first lighting subassembly, and is connected to the power input of the second lighting subassembly and provides power to the second lighting subassembly.
2 . The lighting assembly of claim 1 , further comprising an electromagnetic interference and harmonic filter connected to an input of the power supply.
3 . The lighting assembly of claim 1 , wherein the connectors of the first and second lighting subassemblies are plug and socket or card edge and socket connectors.
4 . The lighting assembly of claim 1 , wherein the lighting assembly is a light emitting diode (LED) aircraft cabin lighting assembly.
5 . The lighting assembly of claim 1 , wherein the first and second type of light elements are different types, and are each selected from the group consisting of LED, remote phosphor, and fluorescent.
6 . The lighting assembly of claim 1 , wherein the first and second type of light elements are different wavelengths, and are each selected from the group consisting of red, green, blue, white, yellow, and amber.
7 . The lighting assembly of claim 1 , wherein the first lighting subassembly is a cove or area light, and the power input is a 28 VDC input.
8 . The lighting assembly of claim 1 , wherein the first lighting subassembly is a cover or area light, and the power input is a 115 VAC input.
9 . The lighting assembly of claim 1 , wherein the first lighting subassembly is a cove or area light, and the power input is switchable between a DC and an AC input.
10 . The lighting assembly of claim 9 , wherein the switchable power input is a software switchable power input.
11 . The lighting assembly of claim 1 , wherein the first lighting subassembly and the second lighting subassembly share power lines provided at their power inputs.
12 . The lighting assembly of claim 1 , wherein the first lighting subassembly and the second lighting subassembly are at a same address and are controlled together.
13 . The lighting assembly of claim 1 , wherein the first lighting subassembly and the second lighting subassembly each comprise a controller input for controlling the respective lighting subassembly.
14 . The lighting assembly of claim 13 , wherein the controller input is a CAN bus interface.
15 . The lighting assembly of claim 1 , wherein at least one of the first lighting subassembly and the second lighting subassembly comprises a smart front-end component as a part of the subassembly that translates high level instructions into pulse width modulation signals.
16 . The lighting assembly of claim 1 , wherein the power supply includes a power factor controller.
17 . A lighting system, comprising:
a first lighting assembly as claimed in claim 1 ;
a second lighting assembly as claimed in claim 1 ;
a master controller that controls the first and second lighting assemblies and the respective lighting subassemblies contained therein; and
a network bus that connects the first lighting assembly, the second lighting assembly, and the master controller.
18 . The lighting system according to claim 17 , wherein the master controller comprises:
an RS-485 input; and
a CAN bus output connecting the master controller at least one of the first lighting assembly and the second lighting assembly.
19 . The lighting system according to claim 17 , wherein the master controller controls power management and allocates a power budget for the first and second lighting assemblies.
20 . The lighting system according to claim 17 , further comprising:
proximity and emergency lights connected to a battery; and
an ordinance light.