A light guide plate (30) is configured to allow light output from a display element (10) to be propagated therein and to allow at least a part of the light propagated therein to be reflected by a plurality of reflective structures (34). The plurality of reflective structures each include a reflective surface (36) inclining with respect to a light output surface (S30). The guide plate includes a first transparent member (30A); a second transparent member (30B); and a third transparent member (38) provided between the first transparent member and the second transparent member. The plurality of reflective structures are provided at positions in contact with the third transparent member.