Patent ID: 7978286

Claim:
An illumination unit comprising: a light guide having an incidence surface; a frame which holds the light guide and is spaced apart from the incidence surface of the light guide; an accommodation section which is formed between the incidence surface of the light guide and the frame; and a light source unit including a plurality of light-emitting diodes each having a light emission surface which is substantially parallel to a mounting surface thereof, a film substrate on which the plurality of light-emitting diodes are arranged in a first direction and are mounted, a heat radiation member having a support portion which supports the film substrate and a reflection portion which extends from the support portion in a second direction perpendicular to the first direction, and an adhesive tape which adheres the film substrate to the support portion and has heat radiation properties, the light source unit being accommodated in the accommodation section and being configured such that the light emission surface of each of the light-emitting diodes faces the incidence surface of the light guide in a state in which the light source unit is accommodated in the accommodation section.