Motor vehicle lighting device comprising light modules cooled by means of a generator of an air flow

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 structural closing element suitable for closing all or part of said added open part, 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, and
• the air sub-duct which supplies the light module furthest from the air flow generator with air includes an outlet directly connected to the housing so as to close the outlet.