Patent ID: 7980718

Claim:
An illuminating device, comprising: a base; a light source including of a plurality of light emitting diodes disposed on a mounting surface of the base at a mounting location; an optical sheet having a light introduction surface that is located facing and at a predetermined distance from the mounting location of the base, and being arranged to at least diffuse light emitted from the plurality of light emitting diodes; and a first reflection member that is provided on the mounting surface of the base, and that is arranged to reflect light emitted from the plurality of light emitting diodes toward the optical sheet; wherein a middle portion of a light emitting surface of each of the light emitting diodes is arranged to face a direction parallel or substantially parallel to the light introduction surface of the optical sheet such that a light emission direction of the plurality of light emitting diodes is a direction that is parallel or substantially parallel to the light introduction surface of the optical sheet.