A lighting device includes a casing, a light source, a light-collecting member, and a reflection member. The casing includes a light exiting portion. The light source is accommodated within the casing. The light-collecting member disposed in the light exiting portion. The light-collecting member includes unit light collectors each having long dimensions in a first direction and being arranged in a second direction perpendicular to the first direction. The reflecting member is disposed adjacent to the light source with respect to the light-collecting member in the light exiting portion. The reflecting member includes a light reflective portion and a light transmissive portion. The reflecting member includes a light source arrangement area including a section overlapping the light source. The light source arrangement area includes the light reflective portion with an area ratio larger than an area ratio of a light source non-arrangement area around the light reflective portion.