A video display device comprising: a display panel that displays an image based on an input image signal; a light source substrate that includes a plurality of light sources on a main surface which is a front side of the light source substrate, and emits, toward a rear side of the display panel, light emitted from the plurality of light sources; a reflection sheet that is provided on the main surface of the light source substrate, and in which hollow partitioning walls each of which separates adjacent two light sources of the plurality of light sources are formed to prevent entrance of light emitted from a light source corresponding to an adjoining area into an area corresponding to one light source; an optical member that is provided between the display panel and the light source substrate, and uniformizes luminance distribution of the light emitted from the light source substrate; support members (100; 200) each of which is provided between the light source substrate and the optical member, and supports the optical member, wherein each of partitioning walls of the reflection sheet includes intersection portions where the partitioning walls formed in a first direction and the partitioning walls formed in a second direction crossing the first direction cross each other, and linear portions formed in parallel with the first direction or the second direction, and each of the support members (100; 200) is disposed in a recess portion formed in a corresponding linear portion, and each of the support members (100; 200) includes a wall portion (110, 210) which has a shape corresponding to a shape of said recess portion of the partitioning wall, each of wall portions (110, 210) is shaped to close the recess portion of the partitioning wall and fill up the partitioning wall divided by the recess portion, wherein the first direction and the second direction are directions substantially perpendicular to each other, each of the recess portions formed in the linear portions is formed at a position in the partitioning wall disposed in either one of the first direction or the second direction with respect to the plurality of light sources so that each of the support members (100, 200) is provided on a linear portion at a position closest to a corresponding light source in the linear portion, and wherein a surface of each of the partitioning walls is inclined in such a direction that a thickness of the partitioning wall decreases in a direction toward the front side, and characterized in that each of the wall portions (110, 210) includes an inclined surface, the inclined surface being in plane with the inclined surface of the partitioning wall. a display panel that displays an image based on an input image signal; a light source substrate that includes a plurality of light sources on a main surface which is a front side of the light source substrate, and emits, toward a rear side of the display panel, light emitted from the plurality of light sources; a reflection sheet that is provided on the main surface of the light source substrate, and in which hollow partitioning walls each of which separates adjacent two light sources of the plurality of light sources are formed to prevent entrance of light emitted from a light source corresponding to an adjoining area into an area corresponding to one light source; an optical member that is provided between the display panel and the light source substrate, and uniformizes luminance distribution of the light emitted from the light source substrate; support members (100; 200) each of which is provided between the light source substrate and the optical member, and supports the optical member, wherein each of partitioning walls of the reflection sheet includes intersection portions where the partitioning walls formed in a first direction and the partitioning walls formed in a second direction crossing the first direction cross each other, and linear portions formed in parallel with the first direction or the second direction, and intersection portions where the partitioning walls formed in a first direction and the partitioning walls formed in a second direction crossing the first direction cross each other, and linear portions formed in parallel with the first direction or the second direction, and each of the support members (100; 200) is disposed in a recess portion formed in a corresponding linear portion, and each of the support members (100; 200) includes a wall portion (110, 210) which has a shape corresponding to a shape of said recess portion of the partitioning wall, each of wall portions (110, 210) is shaped to close the recess portion of the partitioning wall and fill up the partitioning wall divided by the recess portion, wherein the first direction and the second direction are directions substantially perpendicular to each other, each of the recess portions formed in the linear portions is formed at a position in the partitioning wall disposed in either one of the first direction or the second direction with respect to the plurality of light sources so that each of the support members (100, 200) is provided on a linear portion at a position closest to a corresponding light source in the linear portion, and wherein a surface of each of the partitioning walls is inclined in such a direction that a thickness of the partitioning wall decreases in a direction toward the front side, and characterized in that each of the wall portions (110, 210) includes an inclined surface, the inclined surface being in plane with the inclined surface of the partitioning wall.