Light guide for a motor vehicle illumination device for improving light homogeneity

A light guide (26) for an illuminating device adapted for vehicle exteriors and comprising an array of light sources (22), the light guide (26) comprising:

• a guide body (30) extending along a horizontal axis (X-X), and
• a plurality of guide fingers (32) configured to guide the light emitted by the array of light sources (22) and extending from the guide body (30) in such a way that they are aligned along said horizontal axis (X-X), each guide finger (32) extending between a light input end (32I) receiving at least part of the light emitted by the light sources (22) and a light output end (32O), adjacent guide fingers (32) being joined by a junction (38) integral with each of the adjacent guide fingers (32),
• wherein at least one of the junctions (38) comprises a protrusion (40) extending towards the light input ends (32I) of the guide fingers (32), and
• wherein each guide finger (32) is delimited, between said input (32I) and output (32O) ends, by a guide first surface (A) and a guide second surface (B), the guide first surfaces (A) of all guide fingers (32) being contiguous with a single surface, and the guide second surfaces (B) of all guide fingers (32) being contiguous with a single surface.