# US 10,309,609 B2 · Lighting device for vehicle and lighting tool for vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,309,609 B2 - Document ID: US10309609B2 - Status: Granted - Kind: B2 - Application number: 15/672,985 - Filed: 2017-08-09 - Published: 2018-02-22 - Granted: 2019-06-04 - Earliest claimed: 2016-08-19 - Assignees: Toshiba Lighting & Technology Corporation - Applicants: Toshiba Lighting & Technology Corporation - Inventors: Toshihiro Hatanaka; Ryuji Tsuchiya; Daisuke Kosugi - Web page: https://patentgrep.com/patent/US10309609B2 ## CPC - F21S 43/195: {Details of lamp holders, terminals or connectors} - F21S 43/14: Light emitting diodes [LED] - F21S 45/10: Protection of lighting devices (cooling of lighting devices F21S45/40; waterproofing of lighting devices F21S45/50) - F21S 45/47: Passive cooling, e.g. using fins, thermal conductive elements or openings - F21V 29/76: with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section - F21V 29/83: the elements having apertures, ducts or channels, e.g. heat radiation holes - F21S 41/143: the main emission direction of the LED being parallel to the optical axis of the illuminating device - F21S 41/192: {Details of lamp holders, terminals or connectors} - F21S 41/194: {Bayonet attachments} - F21Y 2115/10: Light-emitting diodes [LED] - H05B 45/00: Circuit arrangements for operating light-emitting diodes [LED] - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, 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 - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL ## Abstract A lighting device for a vehicle includes a plate-shaped flange; a placing portion provided on a first face of the flange; a light emitting module provided at an end face of the placing portion, and which includes a light emitting element; and a plurality of heat radiating fins formed in a plate shape, and which is provided on a second face of the flange on a side opposite to the first face. Also, the device includes a plurality of first protrusion portions provided on the second face of the flange in a line, in a direction intersecting a direction in which the plurality of heat radiating fins are aligned; and a second protrusion portion which is provided on the second face of the flange on a side opposite to the plurality of first protrusion portions, by interposing the plurality of heat radiating fins therebetween. ## Claims ### Claim 1 A lighting device for vehicle comprising: a plate-shaped flange; a placing portion which is provided on a first face of the flange; a light emitting module which is provided at an end face of the placing portion, and includes a light emitting element; a plurality of heat radiating fins which are formed in a plate shape, and provided on a second face of the flange on a side opposite to the first face; a plurality of first protrusion portions which are provided on the second face of the flange in a line, in a direction intersecting a direction in which the plurality of heat radiating fins are aligned; and a second protrusion portion which is provided on the second face of the flange on a side opposite to the plurality of first protrusion portions, by interposing the plurality of heat radiating fins therebetween, wherein at least any one of the plurality of first protrusion portions includes a first recessed portion which is open to an end face on an opposite side from the second face, wherein the second protrusion portion includes a second recessed portion which is open to an end face on an opposite side from the second face, wherein the flange, the plurality of heat radiating fins, the plurality of first protrusion portions, and the second protrusion portion include a high heat conductive resin. ### Claim 2 (depends on 1) The device according to claim 1, wherein the plurality of first protrusion portions are provided in vicinity of a peripheral edge of the flange. ### Claim 3 (depends on 1) The device according to claim 1, wherein the second protrusion portion is provided in the vicinity of a peripheral edge of the flange. ### Claim 4 (depends on 1) The device according to claim 1, wherein at least any one of the plurality of first protrusion portions is formed in a block shape. ### Claim 5 (depends on 1) The device according to claim 1, wherein rigidity of the plurality of first protrusion portions is higher than that of the plurality of heat radiating fins. ### Claim 6 (depends on 1) The device according to claim 1, further comprising: a terminal cover which is provided between the plurality of first protrusion portions. ### Claim 7 (depends on 6) The device according to claim 6, wherein the plurality of first protrusion portions and the terminal cover are provided in a line, in a direction intersecting a direction in which the plurality of heat radiating fins are aligned. ### Claim 8 (depends on 6) The device according to claim 6, wherein a distance from the second face of the flange to an end face of the first protrusion portion is approximately the same as a distance from the second face of the flange to an end face of the terminal cover. ### Claim 9 (depends on 1) The device according to claim 1, wherein the second protrusion portion is formed in a block shape. ### Claim 10 (depends on 1) The device according to claim 1, wherein rigidity of the second protrusion portion is higher than that of the plurality of heat radiating fins. ### Claim 11 (depends on 1) The device according to claim 1, wherein both sides of columns of the plurality of heat radiating fins are surrounded with the plurality of first protrusion portions and the second protrusion portion. ### Claim 12 (depends on 1) The device according to claim 1, wherein a distance from the second face of the flange to an end face of the second protrusion portion is approximately the same as a distance from the second face of the flange to end faces of the plurality of heat radiating fins. ### Claim 13 (depends on 1) The device according to claim 1, wherein a distance from the second face of the flange to an end face of the first protrusion portion is approximately the same as a distance from the second face of the flange to end faces of the plurality of heat radiating fins. ### Claim 14 (depends on 6) The device according to claim 6, wherein the plurality of first protrusion portions are provided on a peripheral edge side of the flange, compared to a position in which the plurality of heat radiating fins and the terminal cover are provided. ### Claim 15 (depends on 6) The device according to claim 6, wherein the second protrusion portion is provided on a peripheral edge side of the flange, compared to a position in which the plurality of heat radiating fins and the terminal cover are provided. ### Claim 16 (depends on 1) The device according to claim 1, wherein, when a thickness of the heat radiating fin is set to T (mm), a thickness of the first protrusion portion is set to T1 (mm), and a thickness of the second protrusion portion is set to T2 (mm), the following expressions are satisfied: T1≥2×T T2≥2×T. ### Claim 17 (depends on 1) A lighting tool for vehicle comprising: the lighting device for vehicle according to claim 1; and a housing to which the lighting device for vehicle is attached.