A display device, comprising: a rectangular display part that extends in a longitudinal direction and a transverse direction in plan view and that includes a display surface configured to display an image; a light source part including a plurality of LEDs; a lens mounted to cover the light source part and to refract and reflect light of the light source part; a reflection sheet provided on a rear surface side opposite to the display surface of the display part and configured to reflect the light refracted and reflected by the lens; an optical sheet disposed between the display part and the reflection sheet and parallel to the display part; and a rear frame covering the reflection sheet on the rear surface side, wherein the light source part is disposed in an upper portion of the display device with respect to the transverse direction, wherein a hollow light-guiding region is provided between the reflection sheet and the optical sheet, and wherein the distance between the reflection sheet and the optical sheet in the thickness direction of the display device is less in a lower portion than in the upper portion with respect to the transverse direction, wherein the rear frame is rectangular and extends in the longitudinal direction and the transverse direction, wherein the display device is characterized in that, in the longitudinal direction of the rear frame, the lower portion of the rear frame with respect to the transverse direction is configured such that the distance in the thickness direction of the display device between the optical sheet and the lower portion of the rear frame at both ends of the rear frame is greater than the distance in the thickness direction of the display device between the optical sheet and the lower portion of the rear frame in a middle portion of the rear frame. a rectangular display part that extends in a longitudinal direction and a transverse direction in plan view and that includes a display surface configured to display an image; a light source part including a plurality of LEDs; a lens mounted to cover the light source part and to refract and reflect light of the light source part; a reflection sheet provided on a rear surface side opposite to the display surface of the display part and configured to reflect the light refracted and reflected by the lens; an optical sheet disposed between the display part and the reflection sheet and parallel to the display part; and a rear frame covering the reflection sheet on the rear surface side, wherein the light source part is disposed in an upper portion of the display device with respect to the transverse direction, wherein a hollow light-guiding region is provided between the reflection sheet and the optical sheet, and wherein the distance between the reflection sheet and the optical sheet in the thickness direction of the display device is less in a lower portion than in the upper portion with respect to the transverse direction, wherein the rear frame is rectangular and extends in the longitudinal direction and the transverse direction, wherein the display device is characterized in that, in the longitudinal direction of the rear frame, the lower portion of the rear frame with respect to the transverse direction is configured such that the distance in the thickness direction of the display device between the optical sheet and the lower portion of the rear frame at both ends of the rear frame is greater than the distance in the thickness direction of the display device between the optical sheet and the lower portion of the rear frame in a middle portion of the rear frame.