Display device

A display device equipped with a plurality of solid-state light sources, comprising:

• a coolant-circulating unit that is provided with a flow path formed to pass through each of said plurality of solid-state light sources and that circulates a coolant by way of the flow path,
• wherein:
• each of said plurality of solid-state light sources has a property by which luminance changes according to temperature change, and
• said flow path is formed such that said coolant first passes through, from among said plurality of solid-state light sources, solid-state light sources having a greater degree of luminance change according to said property,
• wherein said flow path is formed such that said coolant passes through the plurality of solid-state light sources in an order starting with the solid-state light sources having the greater degree of luminance change according to said property,
• wherein said plurality of solid-state light sources includes a plurality of first solid-state light sources that emit light of a first color, the degree of said change in luminance of these first solid-state light sources being greater than other solid-state light sources, and
• wherein said flow path includes a plurality of branch flow paths that are arranged to correspond to said plurality of first solid-state light sources in a one-to-one relationship, said coolant separately passing through each of said plurality of first solid-state light sources via said plurality of branch flow paths,
• wherein said plurality of branch flow paths are joined at a junction part to form a joined flow path through which the coolant that passed through said plurality of first solid-state light sources is supplied to said other solid-state light sources.