A liquid crystal display device (1) is equipped with a radiator fin (3) and cooling fans (4) on a back surface of the backlight unit (2). The radiator fin (3) includes a plurality of fins (311) arranged vertically along the backlight unit (2). The cooling fans (4), provided in a lower part of the backlight unit (2), are configured to draw air into the liquid crystal display device (1) from a side opposite to the backlight unit (2) and to create an airflow toward the radiator fin (3).