Optical unit for signaling and/or lighting device

An optical unit, notably for a motor vehicle signaling and/or lighting device, comprising:

• at least one light source comprising at least one light-emitting diode (LED);
• at least one board bearing said at least one light source, said at least one board comprising an electric circuit to power said at least one light source;
• and
• a light guide made at least partially from a material through which light can travel, said light guide being designed to accept light from said at least one light source and to guide light from said at least one light source;
• wherein said at least one board is borne by said light guide;
• wherein said light guide comprises a first face and a second face which are oriented generally parallel to a curvilinear axis of said light guide;
• said first face being an output face for outputting rays of light from said at least one light-emitting diode traveling along said light guide and said second face is generally opposite said first face and constitutes a reflection face of said light guide;
• wherein said optical unit is adapted for mounting on the motor vehicle.