PROBLEM TO BE SOLVED: To provide an efficient lighting device capable of awakening a sleeping user in a comfortable state.SOLUTION: The lighting device includes: at least two light emitting units which apply light with different color temperature characteristics when awakening a sleeping user and a light emitting controller 73 which regulates illumination intensity of each of the light emitting units and adjusts the illumination intensity and color temperature of light to be applied to the user so that the rate of suppression of the users melatonin secretion is set equal to or higher than the prescribed value.COPYRIGHT: (C)2015,JPO&INPIT【課題】睡眠中の利用者を快適に覚醒させることのできる効率性の高い照明装置を提供する。【解決手段】睡眠中の利用者を覚醒させる際に、色温度特性が互いに異なる光を夫々照射する少なくとも二つの発光部と、これら発光部夫々の照度を制御して、利用者のメラトニンの分泌抑制率を所定値以上に設定するよう利用者に照射する光の照度及び色温度を調整する発光制御部73と、を備えている。【選択図】図3
