Display device, illumination device, and light guiding member

An illumination device provided on a rear surface side of a liquid-crystal element, the illumination device comprising:

• a plurality of light sources;
• and
• a light guiding member that has translucency and is arranged between the light sources,
• wherein
• the light guiding member has a plurality of holes each of which passes through the light guiding member completely in a first direction that intersects a rear surface of the liquid-crystal element,
• each of the light sources is housed in a corresponding one of the holes,
• a rear surface of the light guiding member has a first inclined surface inclined upwardly from a light source housed in one of the holes,
• a front surface side of the light guiding member has a second inclined surface inclined upwardly from the light source housed in the one of the holes, and
• an angle of the first inclined surface to a center line of the one of the holes is greater than an angle of the second inclined surface to the center line, a direction of the center line being perpendicular to a thickness direction of the light guiding member.

A light guiding member having translucency comprising:

• a hole passing through the light guiding member completely in a first direction that intersects a rear surface of the light guiding member, so as to house a light source;
• a rear surface having a first inclined surface inclined upwardly from a center line of the hole, a direction of the center line being perpendicular to a thickness direction of the light guiding member;
• and
• a front surface having a second inclined surface inclined upwardly from the center line of the hole,
• wherein an angle of the first inclined surface to a center line of the hole is greater than an angle of the second inclined surface to the center line.