# US 2018/0324980 A1 · Systems and methods for a heat sink > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0324980 A1 - Document ID: US20180324980A1 - Status: Published application - Kind: A1 - Application number: 15/651,941 - Filed: 2017-07-17 - Published: 2018-11-08 - Earliest claimed: 2017-05-03 - Assignees: Fluence Bioengineering, Inc. - Applicants: Fluence Bioengineering - Inventors: Dung Duong; Randall Johnson; Nicholas Klase - Web page: https://patentgrep.com/patent/US20180324980A1 ## CPC - F21V 29/502: characterised by the adaptation for cooling of specific components - A01G 9/20: Forcing-frames; Lights {, i.e. glass panels covering the forcing-frames} - A01G 9/249: {Lighting means (with special arrangements for promoting growth A01G7/045)} - F21V 23/009: {the casing being inside the housing of the lighting device} - F21V 29/745: {the fins or blades being planar and inclined with respect to the joining surface from which the fins or blades extend} - F21V 29/75: with fins or blades having different shapes, thicknesses or spacing - F21V 29/76: with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section - F21V 29/763: {the planes containing the fins or blades having the direction of the light emitting axis} - F21V 29/83: the elements having apertures, ducts or channels, e.g. heat radiation holes - F28F 3/02: Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations (F28F3/08 takes precedence) - H05K 1/021: {Components thermally connected to metal substrates or heat-sinks by insert mounting} - H05K 7/20409: {Outer radiating structures on heat dissipating housings, e.g. fins integrated with the housing} - H10W 40/22: characterised by their shape, e.g. having conical or cylindrical projections - F21V 19/0055: {by screwing} - F21V 29/67: characterised by the arrangement of fans - F21W 2131/40: Lighting for industrial, commercial, recreational or military use - F21Y 2103/10: comprising a linear array of point-like light-generating elements - F21Y 2115/10: Light-emitting diodes [LED] - F28D 2021/0029: {Heat sinks} - F28F 3/025: {the means being corrugated, plate-like elements} - F28F 3/048: {in the form of ribs integral with the element or local variations in thickness of the element, e.g. grooves, microchannels} - F28F 2255/16: extruded - H05K 1/05: Insulated {conductive substrates, e.g. insulated} metal substrate - H05K 3/0061: {onto a metallic substrate, e.g. a heat sink (heat sinks for electric apparatus H05K7/20)} - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - A01G: HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING (picking of fruits, vegetables, hops or the like A01D46/00; propagating unicellular algae C12N1/12) - F28F: DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION (water and air traps, air venting F16) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS - 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 - F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general) ## Abstract Embodiments may utilize a series of exposed fins, which increase the surface area of the heat sink creating additional air flow. As hotter air rises within the system, cooler is drawn into the heatsink. The fins may be exposed on both sides of the longitudinal axis, allowing cooler air to be drawn towards the longitudinal axis above the heatsink and flow upward. This process may cool the fins. Additionally, the spacing between the fins may have to be wide enough to allow for air to freely enter the heatsink. ## Claims ### Claim 1 A heat sink for a light fixture comprising: a rib formed by not extruding a unitary block of metal; first fins positioned on a first side of the rib, the first fins being formed by extruding the unitary block of metal from an upper surface of the unitary block of metal to a lower surface of the unitary block of metal on the first side of the rib; second fins positioned on a second side of the rib, the second fins being formed by extruding the unitary block of metal from the upper surface of the unitary block of metal to the lower surface of the unitary block of metal on the second side of the rib. ### Claim 2 (depends on 1) The heat sink of claim 1, wherein the rib extends from the lower surface of the unitary block of metal to the upper surface of the unitary block of metal. ### Claim 3 (depends on 1) The heat sink of claim 1, wherein the first fins and the second fins include grooves. ### Claim 4 (depends on 1) The heat sink of claim 1, wherein the rib includes grooves. ### Claim 5 (depends on 1) The heat sink of claim 1, further comprising: a base, the base being configured to cover portions of the lower surface of unitary block of metal. ### Claim 6 (depends on 5) The heat sink of claim 5, further comprising: protrusions positioned on the distal ends of the base, the protrusions having a downward angle that partially expose the lower surfaces of the first fins and the second fins. ### Claim 7 (depends on 6) The heat sink of claim 6, wherein distal ends of the protrusions are positioned between outer edges of the first set of fins and the second set of fins and the distal ends of the base. ### Claim 8 (depends on 5) The heat sink of claim 5, wherein the base is configured to be directly coupled to multiple sections of the heat sink, each of the sections including the rib, the first set of fins, and the second set of fins, wherein the base is a MCPCB base. ### Claim 9 (depends on 1) The heat sink of claim 1, wherein the first set of fins and the second set of fins have three exposed edges, and a fourth edge being covered by the rib. ### Claim 10 (depends on 1) The heat sink of claim 1, wherein the upper surfaces of the first set of fins and the second set are fins are planar with an upper surface of the rib. ### Claim 11 A method of forming a heat sink for a light fixture comprising: forming a rib formed by not extruding portions of a unitary block of metal; extruding the unitary block of metal from an upper surface of the unitary block of metal to a lower surface of the unitary block of metal on a first side of the rib to form first fins; extruding the unitary block of metal from the upper surface of the unitary block of metal to the lower surface of the unitary block of metal on a second side of the rib to form second fins. ### Claim 12 (depends on 11) The method of claim 11, wherein the rib extends from the lower surface of the unitary block of metal to the upper surface of the unitary block of metal. ### Claim 13 (depends on 11) The method of claim 11, further comprising: extruding grooves on the first fins and the second fins include grooves. ### Claim 14 (depends on 11) The method of claim 11, wherein the rib includes grooves. ### Claim 15 (depends on 11) The method of claim 11, further comprising: coupling a base to portions of the lower surface of the unitary block of metal. ### Claim 16 (depends on 15) The method of claim 15, wherein the base includes protrusions positioned on the distal ends of the base, the protrusions having a downward angle that partially expose the lower surfaces of the first fins and the second fins. ### Claim 17 (depends on 16) The method of claim 16, wherein distal ends of the protrusions are positioned between outer edges of the first set of fins and the second set of fins and the distal ends of the base. ### Claim 18 (depends on 15) The method of claim 15, further comprising: directly coupling multiple sections of the heat sink via the base, each of the sections including the rib, the first set of fins, and the second set of fins, wherein the base is a MCPCB base. ### Claim 19 (depends on 11) The method of claim 11, wherein the first set of fins and the second set of fins have three exposed edges, and a fourth edge being covered by the rib. ### Claim 20 (depends on 11) The method of claim 11, wherein the upper surfaces of the first set of fins and the second set are fins are planar with an upper surface of the rib.