Liquid crystal display device

1. A liquid crystal display device, comprising:

a liquid crystal panel;

a reflection sheet, which is disposed on a rear surface side of the liquid crystal panel and, as viewed in vertical cross section, comprises a flat portion and curved portions extending from a periphery of the flat portion toward the liquid crystal panel so as to define a single concave surface facing the liquid crystal panel, a periphery of the concave surface substantially corresponding to a periphery of the liquid crystal panel;

a light emitting diode substrate on which a plurality of light emitting diodes are disposed along a horizontal direction;

a support for supporting the reflection sheet at at least one of the curved portions of the reflection sheet, at a position intermediate the flat portion and the periphery of the concave surface; and

a radiator plate, having a higher thermal conductivity than that of the light emitting diode substrate, mounted to the flat section of the reflector plate.

2. The liquid crystal display device according to claim 1 , wherein:

the reflection sheet comprises:

an upper curved portion positioned on an upper side of the plurality of light emitting diodes, and

a lower curved portion positioned on a lower side of the plurality of light emitting diodes; and

the support is provided in at least one of a region in an upper half of the upper curved portion in a height direction and a region in a lower half of the lower curved portion in the height direction.

3. The liquid crystal display device according to claim 2 , wherein:

a plurality of the supports are provided, with at least one support disposed at the upper curved portion and at least one support diposed at the lower curved portion, and

a distance of the support disposed at the upper curved portion from a lower end of the upper curved portion is equal to or smaller than a distance of the support disposed at the lower curved portion from an upper end of the lower curved portion.

4. The liquid crystal display device according to claim 1 , further comprising an outer frame which is disposed on a rear surface side of the reflection sheet,

wherein the support is fixed to the outer frame.

5. The liquid crystal display device according to claim 1 , further comprising:

an outer frame which is disposed on a rear surface side of the reflection sheet; and

a reinforcing member which is mounted on the outer frame on a side facing the liquid crystal panel,

wherein the support is fixed to the reinforcing member.

6. The liquid crystal display device according to claim 1 , wherein:

the support comprises:

a support shaft which passes through an opening provided in the reflection sheet; and

an expanded width portion which is provided at an edge of the support shaft; and

the expanded width position is exposed on a front surface of the reflection sheet.

7. The liquid crystal display device according to claim 6 , further comprising an optical sheet which is disposed on the rear surface side of the liquid crystal panel,

wherein the support further comprises a support column, which extends from the extended width portion in a direction facing the liquid crystal panel, for supporting the optical sheet.

8. The liquid crystal display device according to claim 7 , wherein the support column has a tapered shape in which a cross-sectional area thereof decreases toward the liquid crystal panel.

9. The liquid crystal display device according to claim 8 , wherein the support column has a conical shape.

10. The liquid crystal display device according to claim 7 , wherein, in a state in which the optical sheet is free from restriction, the optical sheet is warped so as to have a concave surface facing the liquid crystal panel.

11. The liquid crystal display device according to claim 6 , wherein the support is white.