# US 9,435,492 B2 · LED luminaire with improved thermal management and novel LED interconnecting architecture > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,435,492 B2 - Document ID: US9435492B2 - Status: Granted - Kind: B2 - Application number: 14/206,825 - Filed: 2014-03-12 - Published: 2014-09-18 - Granted: 2016-09-06 - Earliest claimed: 2013-03-15 - Assignees: Cree, Inc. - Applicants: Cree, Inc. - Inventors: Sten Heikman - Web page: https://patentgrep.com/patent/US9435492B2 ## CPC - F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb - F21K 9/233: specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps - F21V 29/506: of globes, bowls or cover glasses - F21K 9/90: Methods of manufacture - F21V 29/70: characterised by passive heat-dissipating elements, e.g. heat-sinks - F21Y 2103/33: annular - F21Y 2107/10: on concave supports or substrates, e.g. on the inner side of bowl-shaped supports - F21Y 2107/30: on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section - F21Y 2115/10: Light-emitting diodes [LED] - 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 - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - 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 LED lamp includes an optically transmissive enclosure and a base connected to the enclosure. LEDs are mounted on a ribbon for emitting light when energized though an electrical path from the base. The mounting ribbon for the LEDs has a surface that is positioned adjacent an interior surface of the enclosure for transmitting heat from the plurality of LEDs to the enclosure. ## Claims ### Claim 1 A LED lamp comprising: an enclosure comprising an optically transmissive portion having an interior surface and defining a completely enclosed interior space; a base connected to the enclosure; a plurality of LEDs mounted on a thermally conductive ribbon for emitting light when energized through an electrical path from the base, wherein the ribbon is in the electrical path to the plurality of LEDs, the plurality of LEDs being disposed near the interior surface of the optically transmissive portion of the enclosure and positioned to direct light primarily inwardly toward a center of the enclosure, wherein the plurality of LEDs are disposed about the periphery of the enclosure, the ribbon having a surface that is disposed adjacent to the interior surface of the optically transmissive portion of the enclosure for transmitting heat from the plurality of LEDs to the enclosure. ### Claim 2 (depends on 1) The lamp of claim 1 wherein the base comprises an Edison base. ### Claim 3 (depends on 1) The lamp of claim 1 further comprising a plurality of ribbons each of the plurality of ribbons supporting a plurality of LEDs and being in the electrical path to the plurality of LEDs. ### Claim 4 (depends on 1) The lamp of claim 1 wherein the plurality of LEDs are mounted on a mounting surface of the ribbon, and the surface of the ribbon and the mounting surface are part of the same physical component. ### Claim 5 (depends on 1) The lamp of claim 1 wherein the plurality of LEDs are mounted directly to the ribbon. ### Claim 6 (depends on 1) The lamp of claim 1 wherein the outer dimensions of the lamp fall within the ANSI standards for an A series bulb. ### Claim 7 (depends on 1) The lamp of claim 1 wherein electrical conductors for providing current to the plurality of LEDs are formed on the ribbon. ### Claim 8 (depends on 1) The lamp of claim 1 wherein the ribbon comprises one of aluminum board, flexible PCB, lead frame, PCB and MCPCB. ### Claim 9 (depends on 1) The lamp of claim 1 wherein the ribbon is formed into a three-dimensional shape that comprises portions that are shaped to conform to the shape of the interior surface of the enclosure. ### Claim 10 (depends on 9) The lamp of claim 9 wherein the ribbon is bent along score lines. ### Claim 11 (depends on 1) The lamp of claim 1 wherein the plurality of LEDs are oriented at different angles relative to a longitudinal axis of the lamp. ### Claim 12 (depends on 1) The lamp of claim 1 wherein a power supply is located in the base. ### Claim 13 (depends on 1) The lamp of claim 1 further comprising a tower that extends into the enclosure for supporting a second plurality of LEDs. ### Claim 14 (depends on 13) The lamp of claim 13 wherein the tower forms part of a heat sink for dissipating heat from the second plurality of LEDs. ### Claim 15 (depends on 14) The lamp of claim 14 wherein the heat sink extends at least partially outside of the lamp. ### Claim 16 (depends on 15) The lamp of claim 15 wherein the heat sink is thermally coupled to the plurality of LEDs for dissipating heat from the plurality of LEDs. ### Claim 17 (depends on 1) The lamp of claim 1 further comprising a heat sink for supporting a second plurality of LEDs adjacent an opening into the enclosure. ### Claim 18 A LED lamp comprising: an enclosure that is at least partially optically transmissive and comprises an interior surface having a shape; a base connected to the enclosure and a tower that extends from the base into the center of the enclosure; a plurality of LEDs mounted on a first surface of a thermally conductive ribbon for emitting light when energized through an electrical path from the base, the ribbon having a second surface that is disposed adjacent to the interior surface of the enclosure for transmitting heat from the plurality of LEDs to the enclosure wherein the second surface conforms to the shape of the interior surface over the length of the ribbon and at least one LED mounted on the tower where the at least one LED is spaced internally of the conductive ribbon.