Illumination device for a motor vehicle light

An illumination device (100) for a motor vehicle light, the illumination device (100) comprising:

• a plate-like transparent light guiding body (1), wherein the light guiding body (1) is delimited by two opposite main surfaces, a front main surface (10) and a rear main surface (11) as well as side surfaces (12, 13, 14, 15);
• and
• one or more light sources (2), wherein the light sources (2) are arranged on at least one narrow side (12), wherein the light emanating from a light source (2) enters the light guiding body (1) via the narrow side (12) on which the light source (2) is arranged and propagates in the light guiding body (1) substantially in a first main light propagation direction (X1) to that narrow side (13) which lies opposite the narrow side (12) via which the light from the light source (2) enters,
• wherein the front main surface (10) is configured such that at least some of the light rays (S1), incident on the front main surface (10), of the light propagating substantially in the first main light propagation direction (X1) are totally reflected at the front main surface (10) such that they can strike the rear main surface (11),
• wherein the rear main surface (11) has an exit structure (111), and wherein at least some of the light rays (S1′) which are totally reflected at the front main surface (10) and which strike the rear main surface (11) exit the light guiding body (1) via the exit structure (111),
• wherein a reflector surface (40) is arranged opposite the rear main surface (11),
• wherein the reflector surface (40) is designed in such a way that light rays (S1″) emerging from the rear main surface (11) and striking the reflector surface (40) are deflected by the reflector surface (40) in the direction of the light guiding body (1), substantially in a second light propagation direction (X2) and the deflected light rays (S1′″) pass through the rear main surface (11) and the front main surface (10) of the light guiding body (1) and are emitted into an area in front of the illumination device (100) to form a light distribution (LV),
• wherein the exit structure (111) is formed in the rear main surface (11) in the form of profile recesses or in the form of profile elevations (11″), which protrude from the rear main surface (11),
• wherein the reflector surface (40) is formed from reflector partial surfaces (41), wherein a reflector partial surface (41) lies opposite each profile recess or each profile elevation (11″), and
• wherein the reflector partial surfaces (41) are concave in cross-sectional areas (ER) normal to their longitudinal direction (RR), as concave recesses in a reflector element (4).