Modular vehicle light device

The invention relates to a luminous device (1) of a vehicle comprising an element (20) composed of several portions (2,3) each presenting a functional surface (4,5), at least two consecutive portions (2,3) being connected to each other by an articulation. The main characteristic of a luminous device according to the invention is that each articulation allows the displacement of said two consecutive portions (2,3) until their functional surfaces (4,5) come into continuity with each other.