A luminous device for an automotive vehicle, comprising at least one lighting module adapted to project light rays to perform a lighting function, and a luminous module including:
- a flexible guide sheet adapted to receive light rays via at least one edge of the flexible guide sheet and to reflect the light rays in a direction substantially normal to a surface of the flexible guide sheet;
- at least one light injection element adapted to receive light and to distribute the light in the flexible guide sheet;
- at least one light source adapted to inject light into the at least one light injection element;
- wherein the flexible guide sheet is transparent, wherein the luminous module is arranged such that the flexible guide sheet has the light rays from the lighting module passing through it, and wherein the light source is activated when the lighting module is deactivated.