Display device, the display management system and management method

Display device (1), together with emits light according to the light emission current, a plurality of light sources irradiating area irradiated by the light emitting overlap (a1 to an), the use of the light emission current of each of the plurality of light sources (a1 to an) correspondence between the period of use amount, is stored as the use history, so it was decided and a management unit for managing the average value and the lifetime of the light emission current (11), the advantageous arrangement in manufacturing cost light source (a1 to an ) in the display device (1) having a power consumption reducing, it is possible to increase the life of.