# US 10,371,368 B2 · Canopy light system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,371,368 B2 - Document ID: US10371368B2 - Status: Granted - Kind: B2 - Application number: 15/244,091 - Filed: 2016-08-23 - Published: 2016-12-08 - Granted: 2019-08-06 - Earliest claimed: 2012-05-06 - Applicants: Lighting Science Group Corporation - Inventors: Fredric S. Maxik; David E. Bartine; James Lynn Schellack; Addy S. Widjaja - Web page: https://patentgrep.com/patent/US10371368B2 ## CPC - F21V 29/77: with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section - F21S 8/04: intended only for mounting on a ceiling or the like overhead structures (F21S8/02 takes precedence; {details of ceiling bases F21V21/03}) - F21V 15/01: Housings, e.g. material or assembling of housing parts (F21V15/02 takes precedence {housings forming signs or letters G09F13/04}) - F21V 19/003: {Fastening of light source holders, e.g. of circuit boards or substrates holding light sources} - F21V 23/001: {the elements being electrical wires or cables} - F21V 23/008: {the casing being outside the housing of the lighting device} - F21V 23/009: {the casing being inside the housing of the lighting device} - F21V 23/02: the elements being transformers, impedances {or power supply units, e.g. a transformer with a rectifier} - F21V 23/06: the elements being coupling devices {, e.g. connectors} - F21V 29/507: of means for protecting lighting devices from damage, e.g. housings - F21Y 2115/10: Light-emitting diodes [LED] - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract A retrofit lighting system is provided comprising a power supply assembly configured to convert an AC input voltage into a DC output voltage and to adapt the DC output voltage to a substantially constant current level to be defined as a regulated current, at least one distribution wire in electrical communication with the power supply assembly and configured to conduct the regulated current, and at least one respective luminaire assembly spaced apart from and in electrical communication with the power supply assembly, and configured to receive the regulated current from the at least one distribution wire. The DC output voltage may be about 12 volts or less. ## Claims ### Claim 1 A retrofit lighting system, comprising: a power supply assembly configured to convert an AC input voltage into a DC output voltage and to adapt the DC output voltage to a substantially constant current level to be defined as a regulated current; at least one distribution wire in electrical communication with the power supply assembly and configured to conduct the regulated current; and at least one respective luminaire assembly spaced apart from and in electrical communication with the power supply assembly, and configured to receive the regulated current from the at least one distribution wire, the luminaire assembly comprising: a low profile heat-dissipating frame comprising a top portion and a bottom portion and being constructed of one or more thermally conductive materials selected from the group consisting of metals, metal alloys, ceramics, and thermally conductive polymers; and a light source in thermal contact with the frame; wherein the DC output voltage is about 12 volts or less. ### Claim 2 (depends on 1) A retrofit lighting system according to claim 1 wherein the at least one respective luminaire assembly is a plurality of respective luminaire assemblies and the at least one distribution wire is a plurality of distribution wires so that one distribution wire is configured to extend to one luminaire assembly. ### Claim 3 (depends on 1) A retrofit lighting system according to claim 1 wherein the at least one distribution wire comprises a wire of a gauge not wider than 20 AWG and a length of at least 10 feet. ### Claim 4 (depends on 1) A retrofit lighting system according to claim 1 wherein the at least one distribution wire further comprises a protective cover constructed of a weather-resistant material. ### Claim 5 (depends on 1) A retrofit lighting system according to claim 1 wherein the light source comprises at least one light emitting diode (LED). ### Claim 6 (depends on 1) A retrofit lighting system according to claim 1 wherein the top portion of the frame is configured for flush mounting with a surface. ### Claim 7 (depends on 1) A retrofit lighting system according to claim 1 wherein the bottom portion of the frame has a central indentation; and wherein the light source is carried within the central indentation in the frame. ### Claim 8 (depends on 7) A retrofit lighting system according to claim 7 wherein the bottom portion of the frame includes a plurality of heat sink fins positioned between an edge of the central indentation and a perimeter of the frame, the plurality of heat sink fins distributed substantially equidistant from each other along the perimeter of the frame. ### Claim 9 (depends on 7) A retrofit lighting system according to claim 7 wherein the top portion of the frame includes a plurality of heat sink bars distributed substantially equidistant from each other and positioned within at least one recess substantially opposite the central indentation. ### Claim 10 A retrofit lighting system, comprising: a power supply assembly configured to convert an AC input voltage into a DC output voltage and to adapt the DC output voltage to a substantially constant current level to be defined as a regulated current; at least one distribution wire in electrical communication with the power supply assembly and configured to conduct the regulated current; and at least one respective luminaire assembly spaced apart from and in electrical communication with the power supply assembly, and configured to receive the regulated current from the at least one distribution wire, the luminaire assembly comprising: a low profile heat-dissipating frame comprising a top portion and a bottom portion, the bottom portion including a central indentation and a plurality of heat sink fins positioned between an edge of the central indentation and a perimeter of the frame, the plurality of heat sink fins distributed substantially equidistant from each other along the perimeter of the frame; and a light source in thermal contact with the frame; wherein the DC output voltage is about 12 volts or less. ### Claim 11 A retrofit lighting system, comprising: a power supply assembly configured to convert an AC input voltage into a DC output voltage and to adapt the DC output voltage to a substantially constant current level to be defined as a regulated current; at least one distribution wire in electrical communication with the power supply assembly and configured to conduct the regulated current; and at least one respective luminaire assembly spaced apart from and in electrical communication with the power supply assembly, and configured to receive the regulated current from the at least one distribution wire, the luminaire assembly comprising: a low profile heat-dissipating frame comprising a top portion and a bottom portion, the bottom portion comprising a central indentation and the top portion comprising a plurality of heat sink bars distributed substantially equidistant from each other and positioned within at least one recess substantially opposite the central indentation; and a light source in thermal contact with the frame; wherein the DC output voltage is about 12 volts or less; wherein the bottom portion of the frame has a central indentation; and wherein the top portion of the frame includes a plurality of heat sink bars distributed substantially equidistant from each other and positioned within at least one recess substantially opposite the central indentation.