Display device and television device

A display device comprising:

• a light source;
• a light guide plate including at least one side surface that is a light entrance surface opposed to the light source;
• a chassis including at least a bottom plate that includes a surface on which at least the light source and the light guide plate are arranged, and includes a light source supporting portion and a light guide plate supporting portion, the light source supporting portion supporting the light source, the light guide plate supporting portion supporting the light guide plate;
• a display panel arranged over a plate surface of the light guide plate opposite from a plate surface of the light guide plate facing the chassis;
• a flexible circuit board having flexibility and including an end connected to the display panel, the flexible circuit board being bent and a portion of the flexible circuit board is opposed to another surface of the light source supporting portion of the bottom plate;
• a signal transmission circuit board connected to another end of the flexible circuit board and arranged over the other surface of the light source supporting portion of the bottom plate for transmitting a signal to the flexible circuit board;
• and
• a first heat dissipation member sandwiched between the light guide plate supporting portion of the bottom plate and the flexible circuit board and in contact with the other surface of the light guide plate supporting portion of the bottom plate and with the flexible circuit board.