# US 8,465,176 B2 · Light emitting device and light unit using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,465,176 B2 - Document ID: US8465176B2 - Status: Granted - Kind: B2 - Application number: 12/882,839 - Filed: 2010-09-15 - Published: 2011-06-23 - Granted: 2013-06-18 - Earliest claimed: 2009-12-21 - Assignees: LG Innotek Co., Ltd. - Applicants: Kee Youn Jang - Inventors: Kee Youn Jang - Web page: https://patentgrep.com/patent/US8465176B2 ## CPC - H10H 20/8582: {characterised by their shape} - H10H 20/8506: {Containers} - H10H 20/856: Reflecting means - H10W 90/00: Package configurations - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 ## Abstract Provided is a light emitting device and light unit using the same. The light emitting device comprises: a body including a horizontal surface; an insulating layer over at least a portion of the horizontal surface; an electrode over at least a portion of the insulating layer; a heat radiation member formed within the body and protruding from the horizontal surface, the heat radiation member comprising two or more surfaces that are inclined with respect to the horizontal surface; and two or more light emitting diodes, wherein each of the two or more light emitting diodes is mounted on a respective one of the two or more inclined surfaces, and wherein each of the two or more light emitting diodes is electrically connected to the electrode. ## Claims ### Claim 1 A light emitting device comprising: a body including a cavity having a horizontal bottom surface; an insulating layer on a surface of the body; an electrode over at least a portion of the insulating layer; a heat radiation mounting part formed in the cavity and protruding from the horizontal bottom surface, the heat radiation mounting part comprising two or more surfaces that are inclined with respect to the horizontal bottom surface; and two or more light emitting diodes, wherein each of the two or more light emitting diodes is mounted on a respective one of the two or more inclined surfaces, and wherein each of the two or more light emitting diodes is electrically connected to the electrode. ### Claim 2 (depends on 1) The light emitting device of claim 1, wherein the heat radiation mounting part is thermally connected to each of the two or more light emitting diodes. ### Claim 3 (depends on 2) The light emitting device of claim 2, wherein the body further comprises an opening through a rear portion thereof, opposite the horizontal surface, and wherein the heat radiation member is exposed through the opening. ### Claim 4 (depends on 1) The light emitting device of claim 1, wherein the insulating layer is formed of silicon oxide. ### Claim 5 (depends on 1) The light emitting device of claim 1, wherein the heat radiation mounting part comprises at least three inclined surfaces, and wherein the portion of the heat radiation mounting part that includes the at least three inclined surfaces has a pyramidal shape. ### Claim 6 (depends on 5) The light emitting device of claim 5, wherein the portion of the heat radiation mounting part that includes the at least three inclined surfaces has a truncated pyramidal shape that includes a horizontal surface which shares a common edge with each of the at least three inclined surfaces. ### Claim 7 (depends on 1) The light emitting device of claim 1, wherein each of the inclined surfaces has a slope greater than 0° and less than or equal to 30° with respect to the horizontal surface. ### Claim 8 (depends on 1) The light emitting device of claim 1, wherein each of the two or more light emitting diodes has an orientation angle that depends upon the slope of the respective inclined surface on which it is mounted. ### Claim 9 (depends on 1) The light emitting device of claim 1 further comprising: a lens over the two or more light emitting diodes. ### Claim 10 (depends on 1) The light emitting device of claim 1, further comprising: a reflective layer disposing on the insulating layer in the cavity. ### Claim 11 (depends on 10) The light emitting device of claim 10, wherein the reflective layer is disposed on the insulating layer corresponding to an inclined region of the cavity. ### Claim 12 A light emitting device comprising: a body including a cavity having a horizontal bottom surface; an insulating layer on a surface of the body; a reflective layer disposed on the insulating layer in the cavity; an electrode disposed in the body; a heat radiation member formed in the cavity and protruding from the horizontal bottom surface, the heat radiation member comprising a mounting part that includes two surfaces that are inclined with respect to the horizontal bottom surface; and two or more light emitting diodes, wherein each of the two or more light emitting diodes is mounted on a respective one of the two or more inclined surfaces, and wherein each of the two or more light emitting diodes is electrically connected to the electrode. ### Claim 13 (depends on 12) The light emitting device of claim 12, wherein the mounting part has a pyramidal shape comprising at least three inclined surfaces. ### Claim 14 (depends on 13) The light emitting device of claim 13, wherein the mounting part has a truncated pyramidal shape that includes a horizontal surface which shares a common edge with each of the at least three inclined surfaces. ### Claim 15 (depends on 12) The light emitting device of claim 12, wherein each of the two or more light emitting diodes has an orientation angle that depends upon the slope of the respective inclined surface on which it is mounted. ### Claim 16 (depends on 12) The light emitting device of claim 12 further comprising: a lens over the two or more light emitting diodes. ### Claim 17 (depends on 12) The light emitting device of claim 12, wherein the reflective layer is disposed on the insulating layer corresponding to an inclined region of the cavity.