# US 9,039,242 B2 · Lighting device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,242 B2 - Document ID: US9039242B2 - Status: Granted - Kind: B2 - Application number: 14/285,417 - Filed: 2014-05-22 - Published: 2014-09-18 - Granted: 2015-05-26 - Earliest claimed: 2010-11-08 - Assignees: LG Innotek Co., Ltd. - Applicants: LG Innotek Co., Ltd. - Inventors: Tae Young Choi; Won Jin Son; Dong Nyung Lim; Jung Ha Hwang; Seung Yeon Lee; Cheon Joo Kim; Sung Ho Kim - Web page: https://patentgrep.com/patent/US9039242B2 ## CPC - F21V 29/74: with fins or blades - F21K 9/232: specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb - F21K 9/238: Arrangement or mounting of circuit elements integrated in the light source - F21V 3/00: Globes; Bowls; Cover glasses (with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506) - F21V 19/0055: {by screwing} - F21V 23/006: {the substrate being distinct from the light source holder} - F21K 9/23: Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings - F21V 29/773: {the planes containing the fins or blades having the direction of the light emitting axis} - F21V 29/89: Metals - F21Y 2105/10: comprising a two-dimensional [2D] array of point-like light-generating elements - F21Y 2105/12: characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities - F21Y 2113/13: comprising an assembly of point-like light sources - 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 - 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 - 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 lighting device comprises: a heat sink which comprises one surface and a receiving recess; a light emitting module which is disposed on the one surface of the heat sink and comprises a substrate and a plurality of light sources disposed on the substrate, wherein the substrate has a first hole disposed at the center thereof and a second hole; a power controller which is electrically connected to the light emitting module through the second hole of the substrate and is disposed in the receiving recess of the heat sink, wherein the light emitting module comprises a first light emitting module comprising a first substrate and a first light source, and a second light emitting module comprising a second substrate and a second light source, wherein the first substrate and the second substrate are disposed adjacent to each other. ## Claims ### Claim 1 A lighting device comprising: a heat sink which comprises one surface and a receiving recess; a light emitting module which is disposed on the one surface of the heat sink and comprises a substrate and a plurality of light sources disposed on the substrate, wherein the substrate has a first hole disposed at the center thereof and a second hole; a power controller which is electrically connected to the light emitting module through the second hole of the substrate and is disposed in the receiving recess of the heat sink, wherein the light emitting module comprises a first light emitting module comprising a first substrate and a first light source, and a second light emitting module comprising a second substrate and a second light source, wherein the first substrate and the second substrate are disposed adjacent to each other, and the first light source and the second light source are disposed adjacent to each other, and wherein a distance from the center of the first light source to the center of the first hole of the first substrate is substantially the same as a distance from the center of the first light source to the center of the second light source. ### Claim 2 (depends on 1) The lighting device of claim 1, wherein the plurality of the light sources are disposed symmetrically with each other with respect to the first hole of the substrate. ### Claim 3 (depends on 1) The lighting device of claim 1, wherein a plurality of the second holes of the substrate are provided, and wherein the plurality of the second holes of the substrate are disposed symmetrically with each other with respect to the first hole of the substrate. ### Claim 4 (depends on 1) The lighting device of claim 1, wherein distances from the end of the substrate to the ends of the plurality of the light source are the same as each other. ### Claim 5 (depends on 1) The lighting device of claim 1, wherein the second hole of the first substrate and the second hole of the second substrate are disposed adjacent to each other, and wherein the light emitting module comprises a connector electrically connected to the second hole of the first substrate and the second hole of the second substrate. ### Claim 6 (depends on 1) The lighting device of claim 1, wherein the one surface of the heat sink comprises a first seating recess in which the first light emitting module is disposed and a second seating recess in which the second light emitting module is disposed, and wherein the first seating recess and the second seating recess are partially connected with each other. ### Claim 7 (depends on 1) The lighting device of claim 1, wherein a lens covering the light source and including a resin and a fluorescent material, and wherein the fluorescent material includes at least two of a yellow fluorescent material, a green fluorescent material and/or a red fluorescent material. ### Claim 8 (depends on 1) The lighting device of claim 1, wherein the first and the second light emitting modules emit white light, and wherein the white light of the first light emitting module has a color temperature different from that of the white light of the second light emitting module. ### Claim 9 A lighting device comprising: a heat sink which comprises one surface and a receiving recess; a light emitting module which is disposed on the one surface of the heat sink; and a power controller which electrically connected to the light emitting module and is disposed in the receiving recess of the heat sink, wherein the light emitting module comprises a first light emitting module and a second light emitting module, wherein the first and the second light emitting modules emit white light, wherein the white light of the first light emitting module has a color temperature different from that of the white light of the second light emitting module, wherein the one surface of the heat sink comprises a first seating recess in which the first light emitting module is disposed and a second seating recess in which the second light emitting module is disposed, and wherein the first seating recess and the second seating recess are partially connected with each other. ### Claim 10 (depends on 9) The lighting device of claim 9, wherein each of the first the second light emitting modules comprises a substrate and a plurality of light sources disposed on the substrate, and the substrate has a first hole disposed at the center thereof, wherein the substrate of the first light emitting module and the substrate of the second light emitting module are disposed adjacent to each other, wherein a distance from the center of a first light source among the light sources of the first light emitting module to the center of the first hole of the first light emitting module is the substantially same as a distance from the center of the first light source to the center of a second light source among the light sources of the second light emitting module, and wherein the first and second light sources adjacent to each other. ### Claim 11 (depends on 10) The lighting device of claim 10, wherein each of the substrates of the first and second light emitting module have a second hole, and wherein light emitting module comprises a connector which electrically connects the second holes of the first and second light emitting modules. ### Claim 12 (depends on 10) The lighting device of claim 10, wherein each of the substrates of the first and second light emitting module have a second hole, and wherein the power controller comprises an electrode pin which electrically connects the second holes of the first and second light emitting modules. ### Claim 13 (depends on 12) The lighting device of claim 12, further comprising an inner case which receives the power controller therein and is disposed in the receiving recess of the heat sink, and a holder which is coupled to the inner case in order to seal the power controller, wherein the holder comprises a protrusion portion having a hole allowing the electrode pin to pass through the hole. ### Claim 14 (depends on 10) The lighting device of claim 10, wherein a depth of the first seating recess is the same as the thickness of the substrate of the first light emitting module. ### Claim 15 A lighting device comprising: a heat sink which comprises one surface and a receiving recess; a light emitting module which is disposed on the one surface of the heat sink; and a power controller which electrically connected to the light emitting module and is disposed in the receiving recess of the heat sink, wherein at least three light emitting modules are provided, wherein the at least three light emitting modules are disposed on the one surface of the heat sink in the shape of “T”, and wherein the white light of the first light emitting module has a color temperature different from that of the white light of at least one of the second and the third light emitting modules. ### Claim 16 (depends on 15) The lighting device of claim 15, wherein the one surface of heat sink has a seating recess in which the at least three light emitting modules are disposed, and wherein the seating recess has a shape of “T”. ### Claim 17 (depends on 16) The lighting device of claim 16, wherein each of the three light emitting modules comprises a substrate, and wherein a depth of the seating recess is the same as the thickness of the substrate. ### Claim 18 (depends on 15) The lighting device of claim 15, wherein the light emitting module comprises a connector which electrically connects two emitting modules among the three emitting modules. ### Claim 19 (depends on 15) The lighting device of claim 15, wherein the at least three light emitting modules comprise a first light emitting module, a second light emitting module and a third light emitting module, wherein each of the first light emitting module, the second light emitting module and the third light emitting module comprises a substrate and a plurality of light sources disposed on the substrate, and the substrate has a hole disposed at the center thereof, wherein the substrate of the second light emitting module are disposed adjacent to each other, wherein a distance from the center of a first light source among the light sources of the first light emitting module to the center of the hole of the first light emitting module is the substantially same as a distance from the center of the first light source to the center of a second light source among the light sources of the second light emitting module, and wherein the first and second light sources adjacent to each other. ### Claim 20 (depends on 15) The lighting device of claim 15, wherein the heat sink comprises an upper portion and a lower portion, and wherein the upper portion comprises both a first area having the one surface and a second area having a surface inclined with respect to the one surface.