# US 9,435,525 B1 · Multi-part heat exchanger for LED lamps > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,525 B1 - Document ID: US9435525B1 - Status: Granted - Kind: B1 - Application number: 14/199,398 - Filed: 2014-03-06 - Granted: 2016-09-06 - Earliest claimed: 2013-03-08 - Assignees: Soraa, Inc. - Applicants: Soraa, Inc. - Inventors: Qinghong He; Michael R. Krames - Web page: https://patentgrep.com/patent/US9435525B1 ## CPC - F21V 29/15: Thermal insulation - F21K 9/233: specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps - F21V 29/503: of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858) - F21V 29/508: of electrical circuits - F21V 29/773: {the planes containing the fins or blades having the direction of the light emitting axis} - F21K 9/238: Arrangement or mounting of circuit elements integrated in the light source - F21V 23/003: {the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array} - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR ## Abstract Multi-part heat exchangers for hot/cold temperature domain isolation in LED lamps are disclosed. ## Claims ### Claim 1 An LED lamp apparatus, comprising: a light-emitting diode; a multi-part heat exchanger comprising a first portion and a second portion wherein the first portion of the multi-part heat exchanger is in direct or indirect physical contact with the light-emitting diode; at least one electrical component configured to drive the light-emitting diode wherein the second portion of the multi-part heat exchanger is in direct or indirect physical contact with the at least one electrical component; and wherein the first portion of the multi-part heat exchanger is thermally isolated from the second portion of the multi-part heat exchanger such that the light emitting diode and first portion are configured to operate at a first temperature and the at least one electrical component and said second portion are configured to operate at a second temperature, the second temperature being lower than the first temperature. ### Claim 2 (depends on 1) The apparatus of claim 1, wherein the first portion of the multi-part heat exchanger is at least partially thermally-isolated from the second portion of the multi-part heat exchanger by a physical distance. ### Claim 3 (depends on 2) The apparatus of claim 2, wherein thermal isolation is achieved by an air gap between the said first portion and the second portion of the multi-part heat exchanger. ### Claim 4 (depends on 2) The apparatus of claim 2, wherein thermal isolation is achieved by a solid thermal insulation material between the first portion and the second portion of the multi-part heat exchanger. ### Claim 5 (depends on 1) The apparatus of claim 1, wherein the at least one electrical component to drive the light-emitting diode includes a capacitor. ### Claim 6 (depends on 1) The apparatus of claim 1, wherein the at least one electrical component configured to drive the light-emitting diode comprises a resistor. ### Claim 7 (depends on 1) The apparatus of claim 1, wherein the LED lamp is in the form factor of at least one of, an MR-16 lamp, an A series lamp, a PS series lamp, a B series lamp, a C series lamp, a CA series lamp, an RP series lamp, an S series lamp, an F series lamp, an R series lamp, an MR series lamp, a BR series lamp, a G series lamp, a T series lamp, a BT series lamp, an E series lamp, an ED series lamp, an AR series lamp, and a PAR series lamp. ### Claim 8 An illumination device, comprising: a light source having at least one light-emitting diode; a multi-part heat exchanger comprising a first portion and a second portion wherein the first portion of the multi-part heat exchanger in direct or indirect physical contact with the light-emitting diode; at least one electrical component configured to drive the light-emitting diode wherein the second portion of the multi-part heat exchanger is in direct or indirect physical contact with the at least one electrical component; and wherein the first portion of the multi-part heat exchanger is thermally isolated from the second portion of the multi-part heat exchanger such that the light emitting diode and first portion are configured to operate at a first temperature and the at least one electrical component and said second portion are configured to operate at a second temperature, the second temperature being lower than the first temperature. ### Claim 9 (depends on 8) The illumination device of claim 8, wherein the illumination device is at least one of, an MR-16 lamp, an A series lamp, a PS series lamp, a B series lamp, a C series lamp, a CA series lamp, an RP series lamp, an S series lamp, an F series lamp, an R series lamp, an MR series lamp, a BR series lamp, a G series lamp, a T series lamp, a BT series lamp, an E series lamp, an ED series lamp, an AR series lamp, and a PAR series lamp. ### Claim 10 (depends on 8) The device of claim 8, wherein the first portion of the multi-part heat exchanger is at least partially thermally-isolated from the second portion of the multi-part heat exchanger by a physical distance. ### Claim 11 (depends on 10) The device of claim 10, wherein thermal isolation is achieved by an air gap between the said first portion and the second portion of the multi-part heat exchanger. ### Claim 12 (depends on 10) The device of claim 10, wherein thermal isolation is achieved by a solid thermal insulation material between the first portion and the second portion of the multi-part heat exchanger. ### Claim 13 (depends on 8) The device of claim 8, wherein the at least one electrical component to drive the light-emitting diode includes a capacitor. ### Claim 14 (depends on 8) The device of claim 8, wherein the at least one electrical component configured to drive the light-emitting diode comprises a resistor. ### Claim 15 (depends on 1) The device of claim 1, wherein the first and second portions conform to standard lamp form factor. ### Claim 16 (depends on 1) The device of claim 1, wherein said first portion comprises a first heat sink and said second portion comprises a second heat sink, wherein that the light emitting diode and first sink are configured to operate at a first temperature and the at least one electrical component and said second sink are configured to operate at a second temperature, the second temperature being lower than the first temperature.