# US 2019/0170340 A1 · Illumination unit and display apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170340 A1 - Document ID: US20190170340A1 - Status: Published application - Kind: A1 - Application number: 16/268,947 - Filed: 2019-02-06 - Published: 2019-06-06 - Earliest claimed: 2014-05-21 - Assignees: Sony Corporation - Applicants: Sony Corporation - Inventors: KAZUMI KOBAYASHI - Web page: https://patentgrep.com/patent/US20190170340A1 ## CPC - F21V 29/76: with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section - F21S 2/00: Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction - F21V 15/01: Housings, e.g. material or assembling of housing parts (F21V15/02 takes precedence {housings forming signs or letters G09F13/04}) - F21V 23/00: Arrangement of electric circuit elements in or on lighting devices {(characterised by cooling arrangements F21V29/508)} - F21V 23/06: the elements being coupling devices {, e.g. connectors} - F21V 29/503: of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858) - F21V 29/67: characterised by the arrangement of fans - G03B 21/16: Cooling; Preventing overheating - G03B 21/2033: {LED or laser light sources} - 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 - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract There is provided an illumination unit including a light emitting device with a coupling surface, the light emitting device including a terminal provided on the coupling surface, a holding member that houses the light emitting device, a wiring substrate that is provided separately from the coupling surface of the light emitting device and is electrically coupled with the terminal, and a heatsink that includes an adjacent part adjacent to the coupling surface of the light emitting device. ## Claims ### Claim 1 An illumination unit comprising: a light emitting device; a holding member; a wiring substrate; and a heatsink configured to include an adjacent part adjacent to a coupling surface of the light emitting device. ### Claim 2 (depends on 1) The illumination unit according to claim 1, wherein the light emitting device includes a terminal provided on the coupling surface. ### Claim 3 (depends on 1) The illumination unit according to claim 1, wherein the holding member houses the light emitting device with a coupling surface. ### Claim 4 (depends on 1) The illumination unit according to claim 1, wherein the wiring substrate is provided separately from the coupling surface of the light emitting device and is electrically coupled with the terminal. ### Claim 5 (depends on 1) The illumination unit according to claim 1, wherein the heatsink is provided with a fin. ### Claim 6 (depends on 1) The illumination unit according to claim 1, wherein the wiring substrate is coupled with the terminal at a position facing the coupling surface, and at least a portion of the adjacent part is provided between the wiring substrate and the coupling surface. ### Claim 7 (depends on 6) The illumination unit according to claim 6, wherein the wiring substrate faces the coupling surface and is bent in a direction intersecting the coupling surface. ### Claim 8 (depends on 1) The illumination unit according to claim 1, wherein the heatsink includes a first adjacent part that is adjacent to a first end portion of the coupling surface, and a second adjacent part that is adjacent to a second end portion of the coupling surface. ### Claim 9 (depends on 1) The illumination unit according to claim 1, wherein the heatsink includes a separation part that faces the coupling surface, and a joint part that is provided between the separation part and the adjacent part. ### Claim 10 (depends on 1) The illumination unit according to claim 1, wherein the wiring substrate is mounted with a temperature sensor that detects temperature near the light emitting device. ### Claim 11 (depends on 10) The illumination unit according to claim 10, further comprising a heat exhausting member that cools the light emitting device, wherein at least a portion of the wiring substrate is provided on a first surface of the holding member, and the heat exhausting member is provided on a second surface of the holding member. ### Claim 12 (depends on 1) The illumination unit according to claim 1, wherein the terminal is coupled with the wiring substrate at a position outside the coupling surface in a planar view. ### Claim 13 (depends on 1) The illumination unit according to claim 1, wherein the holding member includes a guide part to determine a position of the heatsink. ### Claim 14 (depends on 13) The illumination unit according to claim 13, wherein the guide part is a protrusion or a recess extending in a direction parallel to the coupling surface. ### Claim 15 (depends on 1) The illumination unit according to claim 1, wherein the light emitting device comprises a plurality of light emitting devices. ### Claim 16 (depends on 15) The illumination unit according to claim 15, wherein two or more of the plurality of light emitting devices are disposed to have optical axis directions different from one another. ### Claim 17 (depends on 15) The illumination unit according to claim 15, wherein one heatsink is provided for the plurality of light emitting devices. ### Claim 18 (depends on 1) The illumination unit according to claim 1, wherein the holding member includes an opening that houses the light emitting device. ### Claim 19 (depends on 18) The illumination unit according to claim 18, wherein the light emitting device includes a stem part provided with a notch part, and the opening of the holding member includes a positioning part that is engaged with the notch part of the light emitting device. ### Claim 20 (depends on 1) The illumination unit according to claim 1, further comprising an optical member, the optical member being housed in the holding member.