# US 10,119,698 B2 · LED illumination device for spotlighting > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,119,698 B2 - Document ID: US10119698B2 - Status: Granted - Kind: B2 - Application number: 15/624,714 - Filed: 2017-06-16 - Published: 2017-10-26 - Granted: 2018-11-06 - Earliest claimed: 2014-12-19 - Assignees: Gigatera Inc. - Applicants: Kmw Inc. - Inventors: Dong-Sik Roh; Duk-Yong Kim - Web page: https://patentgrep.com/patent/US10119698B2 ## CPC - F21V 29/76: with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section - F21S 8/003: {Searchlights, i.e. outdoor lighting device producing powerful beam of parallel rays, e.g. for military or attraction purposes (searchlights mounted on a vehicle B60Q1/245)} - F21V 7/0008: {providing for indirect lighting} - F21V 7/04: Optical design - F21V 21/14: Adjustable mountings - F21V 23/001: {the elements being electrical wires or cables} - F21V 23/02: the elements being transformers, impedances {or power supply units, e.g. a transformer with a rectifier} - F21V 29/15: Thermal insulation - F21V 29/505: of reflectors - H05B 45/10: Controlling the intensity of the light - F21Y 2107/10: on concave supports or substrates, e.g. on the inner side of bowl-shaped supports - 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 - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - 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 An LED illumination device for spotlighting includes: a lower case part having a plurality of planar inner side surfaces so that a light-emitting hole on the bottom surface thereof can be a polygonal shape; an upper case part, positioned above the lower case part, for receiving a power supply unit; substrates which are respectively coupled to the planar inner side surfaces of the lower case part and in which LEDs are mounted such that a light-emitting surface can be directed to the central part of the polygon; and a plurality of heat dissipation fins which are protrudingly positioned along the circumference of the lower case part, wherein the spaces between the heat dissipation fins communicate in the longitudinal direction of the lower case part. A case is manufactured as a single structure and components such as a power supply unit, LED-mounted substrates, reflective plates, etc. can be assembled within the case through the light-emitting hole. ## Claims ### Claim 1 An LED illumination device for spotlighting, comprising: a lower case having a plurality of planar inner surfaces so that a light outlet on a bottom thereof has a polygonal shape; an upper case positioned above the lower case to accommodate a power supply unit therein; substrates coupled to the respective planar inner surfaces of the lower case and having LEDs mounted thereon such that light-emitting surfaces of the LEDs are directed to a center of the polygonal light outlet; a reflector coupled to cover the light outlet of the lower case; a dimming controller configured to control electric power of the power supply unit in response to an external control signal and to supply the controlled electric power to the substrates; and a plurality of heat dissipation fins protruding along a circumference of the lower case, spaces between the heat dissipation fins being in communication with one another in a vertical direction of the lower case, wherein the reflector has a through-hole through which the dimming controller is exposed downward. ### Claim 2 (depends on 1) The LED illumination device according to claim 1, wherein the reflector comprises a plurality of reflective pockets to individually expose the LEDs mounted on the substrates toward the light outlet. ### Claim 3 (depends on 2) The LED illumination device according to claim 2, further comprising a thermal insulator configured to prevent heat conduction between the upper case and the lower case. ### Claim 4 (depends on 3) The LED illumination device according to claim 3, wherein the thermal insulator comprises first and second thermal insulators that are vertically disposed, and an air layer is defined between the first thermal insulator and the second thermal insulator. ### Claim 5 (depends on 2) The LED illumination device according to claim 2, wherein the reflector has a plurality of ribs arranged on an upper surface thereof to reinforce the reflector and enlarge a surface area of the reflector for easy heat dissipation. ### Claim 6 (depends on 1) The LED illumination device according to claim 1, wherein the reflector has a plurality of inclined surfaces to individually expose the LEDs mounted on the substrates toward the light outlet. ### Claim 7 (depends on 6) The LED illumination device according to claim 6, wherein the reflector has a plurality of ribs arranged on an upper surface thereof to reinforce the reflector and enlarge a surface area of the reflector for easy heat dissipation. ### Claim 8 (depends on 1) The LED illumination device according to claim 1, wherein the upper and lower cases are connected by a connection member so that a space portion is defined therebetween. ### Claim 9 (depends on 8) The LED illumination device according to claim 8, wherein the heat dissipation fins are separately manufactured to be coupled to the outside of the lower case.