A lighting device that includes a series of optical waveguides each able to allow rays of light to be waveguided between an entry face, arranged at a proximal end of the optical waveguide, and an exit face. The device is formed of at least two subassemblies produced separately and each including at least a portion of the series of optical waveguides and first structural elements for retaining the waveguides in position and joining successive optical waveguides of the subassembly together, the two subassemblies being able to be assembled to form the device through collaboration of the first structural elements. The distal ends of at least two successive optical waveguides of the series are connected by a piece of translucent or transparent flexible material.