# US 2017/0254501 A1 · Motor vehicle lighting device comprising light modules cooled by means of a generator of an air flow > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0254501 A1 - Document ID: US20170254501A1 - Status: Published application - Kind: A1 - Application number: 15/446,106 - Filed: 2017-03-01 - Published: 2017-09-07 - Earliest claimed: 2016-03-02 - Assignees: Valeo Vision - Applicants: Valeo Vision - Inventors: Hugo MESTRE; Rafael Martinez; Isidro Garcia; Pedro Zambrana - Web page: https://patentgrep.com/patent/US20170254501A1 ## CPC - F21S 45/43: using gas - F21S 45/49: Attachment of the cooling means - F21V 29/673: {the fans being used for intake} - F21V 29/763: {the planes containing the fins or blades having the direction of the light emitting axis} - F21V 29/83: the elements having apertures, ducts or channels, e.g. heat radiation holes - F21S 41/141: Light emitting diodes [LED] - F21S 43/14: Light emitting diodes [LED] - F21W 2102/00: Exterior vehicle lighting devices for illuminating purposes - F21W 2102/30: Fog lights - F21Y 2115/00: Light-generating elements of semiconductor light sources - F21Y 2115/10: 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 - F21W: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS - 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 motor vehicle lighting device includes structural elements with a housing, at least one light module accommodated inside the housing, and at least one light source cooperating with an optical surface. The light module is provided with a heat sink, a generator of an air flow, and a single air duct suitable for cooperating with the generator of the air flow such as to direct the generated air flow towards the heat sink of the at least one light module. The air duct is formed by an open part added in the housing, and at least one closing structural element suitable for closing all or part of the added part. ## Claims ### Claim 1 Lighting device for motor vehicle, said lighting device comprising: structural elements including a housing; at least one light module accommodated inside said housing, comprising at least one light source cooperating with an optical surface, said light module being provided with a heat sink; a generator of an air flow; and a single air duct suitable for cooperating with said generator of the air flow such as to direct said generated air flow towards the heat sink of said at least one light module, said air duct being formed by: an open part added in the housing; and at least one closing structural element suitable for closing all or part of said added open part. ### Claim 2 (depends on 1) Lighting device according to claim 1, wherein the closing structural element is an optical unit arranged in said housing and suitable for receiving said at least one light module. ### Claim 3 (depends on 1) Lighting device according to claim 1, wherein the closing structural element is said housing. ### Claim 4 (depends on 1) Lighting device according to claim 1, wherein the added part of the air duct is fixed by fixing means to the closing structural element. ### Claim 5 (depends on 4) Lighting device according to claim 4, wherein the fixing means are: latching means; or sticking means; or screwing means. ### Claim 6 (depends on 1) Lighting device according to claim 1, wherein the generator of the air flow includes an air outlet and the air duct is connected directly to this air outlet. ### Claim 7 (depends on 1) Lighting device according to claim 1, wherein the air duct extends in the lighting device from the air flow generator and in a substantially longitudinal direction. ### Claim 8 (depends on 1) Lighting device according to claim 1, wherein the lighting device comprises a series of N light modules and wherein the air duct is divided into N air sub-ducts, each air sub-duct supplying a light module of the series of the N light modules, respectively, with air. ### Claim 9 (depends on 1) Lighting device according to claim 1, wherein the air duct includes at least one outlet which opens directly onto the heat sink of said at least one light module. ### Claim 10 (depends on 9) Lighting device according to claim 9, wherein said outlet of the air duct has a closed section. ### Claim 11 (depends on 8) Lighting device according to claim 8, wherein the air sub-duct which supplies the light module furthest from the air flow generator with air includes an outlet which is closed directly by the housing. ### Claim 12 (depends on 11) Lighting device according to claim 11, wherein the outlet of said air sub-duct is divided into a plurality of channels. ### Claim 13 (depends on 1) Lighting device according to claim 1, wherein the light source is a semi-conducting emitting chip. ### Claim 14 (depends on 1) Lighting device according to claim 1, wherein the structural element forming part of the air duct is made from plastic. ### Claim 15 (depends on 1) Lighting device according to claim 1, wherein said lighting device is a headlight.