Abstract: A light guide device. The light guide device includes: a light incidence portion and a light guide body, wherein the light incidence portion includes: a first end having an end face with a shape of polygon for receiving an incident light; a second end arranged opposite to the first end and connected to the light guide body, the second end being arranged to direct the incident light from the first end into the light guide body; and a side surface arranged between the first end and the second end, the side surface including at least two sub-surfaces arranged side by side, wherein each of the at least two sub-surfaces extends from one side of the end face of the first end to the second end.

Abstract: The present disclosure provides a light source assembly for a vehicle lamp, a method for producing a light source assembly, and a signal lamp for an automobile vehicle. The light source assembly for a vehicle lamp includes: a base body; at least one metal holding member, each of which includes a light source holding part and one or more penetration parts, the light source holding part being arranged on a first surface of the base body, the penetration part penetrating through the base body from the first surface of the base body and extending outwardly from a second surface of the base body, the second surface being opposite to the first surface; and a light emitting component mounted on the light source holding part of the at least one metal holding member.