LIGHTING DEVICE

To provide a lighting device that easily keeps the storage capacity of power generated by lighting at a certain value or higher and easily suppresses an increase in the amount of power used for lighting.SOLUTION: The lighting device is provided with at least one lighting unit 11 that is turned on and off, at least one power generation unit 21 that generates power using light from at least the lighting unit 11, at least one power storage unit 31 that stores power generated by the power generation unit 21 in a chargeable and dischargeable manner, and a control unit 41 that turns on the lighting unit 11 when the residual capacity in the power storage unit 31 is equal to or less than a lighting threshold and turns off the lighting unit when the residual capacity is equal to or greater than an off threshold that has a larger value than the lighting threshold.SELECTED DRAWING: Figure 1 【課題】照明により発電される電力の蓄電量を一定値以上に保ちやすく、照明に用いられる電力の増加を抑制しやすい照明装置を提供する。【解決手段】点灯および消灯される少なくとも１つの照明部１１と、少なくとも照明部１１の光を用いて発電を行う少なくとも１つの発電部２１と、発電部２１により発電された電力を充放電可能に蓄える少なくとも１つの蓄電部３１と、蓄電部３１における残存容量が点灯閾値以下の場合には照明部１１を点灯させ、残存容量が前記点灯閾値よりも値が大きな消灯閾値以上の場合には照明部を消灯させる制御部４１と、が設けられたことを特徴とする。【選択図】 図１