Signal light or illumination device with multi-section light guiding body

A signal light or illumination device (1) for a motor vehicle or for a motor vehicle headlight, comprising:

• at least one light source (2) for emitting light rays;
• and
• a light guiding body (3) associated with the at least one light source (2), wherein the light guiding body (3) is designed to receive light from the at least one light source via a light entry area (4a) of the light guiding body (3), to guide it through the light guiding body and couple it out at a light extraction area (4b) of the light guiding body (3) along a main emission direction (x),
• wherein the light guiding body (3) has a first section (5), a second section (6), and a first deflection element (7),
• wherein the first section (5) is designed as a first light guiding channel, which is delimited by a first outer surface (5a) and has a first longitudinal extension (L1), wherein the first section (5) is designed in such a way that its first longitudinal extension (L1) runs along the main emission direction (x), wherein the light entry area (4a) is formed at an end of the first section (5) facing the at least one light source (2), wherein the light entry area (4a) is designed in such a way that the light rays emitted by the at least one light source (2) after entering the first section (5) are parallelized parallel to a first plane (E1), and in particular are not parallelized along a second plane (E2) which is different from the first plane (E1), orthogonal to the first plane (E1), and propagate along the main emission direction (x) through the first section,
• wherein the second section (6) is designed as a second light guiding channel, which is delimited by a second outer surface (6a) and has a second longitudinal extension (L2), wherein the second section (6) is oriented to the first section (5) in such a way that its second longitudinal extension (L2) runs along a second direction (R2), which is oriented differently from the main emission direction (x), wherein the second outer surface (6a) has a rear side (RS) and a front side (VS) opposite the rear side (RS), wherein the rear side (RS) has second deflection elements (8) along the second longitudinal extension (L2) at least in sections, which are designed to deflect light, which propagates inside the second section (6) and strikes the second deflection elements (8), in the direction of the front side (VS), wherein one section of the front side (VS) forms the light extraction area (4b), via which light deflected by the second deflection elements (8) exits the second section (6) of the light guiding body (3),
• wherein the first deflection element (7) connects the first section (5) to the second section (6) in a light-guiding manner and is designed to deflect light that has entered the first section (5), after it has passed through the first section (5), into the second section (6), in particular by means of total reflection, such that deflected light propagates inside the second section (6) along the second direction (R2),
• wherein the first outer surface (5a) of the first light guiding channel has optical structures (9) along the first longitudinal extension (L1) of the first section (5) at least in sections, which are designed to deflect light rays that have entered via the light entry area (4a),
• wherein the deflection by the optical structures (9) is such that light deflected by the optical structures (9), after it has been deflected by the first deflection element (7) in the direction of the second section (6), illuminates the second deflection elements (8) of the second section (6) substantially uniformly in such a way that light exiting the extraction area (4a) of the second section (6) has a substantially constant light intensity per exit surface unit over the entire extraction area (4a),
• wherein the optical structures (9) are configured to deflect light rays in such a way that light rays reflected by the optical structures (9) have an angle (w1) to the main emission direction (x) which is smaller than an angle (w2), which would exist between the main emission direction (x) and light rays, which would be reflected by a notional, smooth or flat outer surface, which is free of optical structures (9), and
• wherein the optical structures (9) are designed as third deflection elements, which are arranged along a section of the outer surface (5a) along the main emission direction (x), wherein the third deflection elements have respectively one, flat deflection surface for the total reflection of light, wherein the deflection surfaces of the third deflection elements have in particular a transverse extension orthogonal to the main emission direction (x).