Illumination system and illumination device

An illumination device, comprising:

• a light source configured to irradiate light;
• a control unit configured to control a turn-on operation of the light source;
• and
• a sound source configured to output a stimulus sound,
• wherein the illumination device is configured to gradually increase a dimming ratio of the light source in a pre-wakeup period between a predetermined time earlier than a wakeup setting time and the wakeup setting time, and
• the control unit is configured to, during the pre-wakeup period, intermittently execute at least one of light stimulus control in which the dimming ratio of the light source is made higher, for a predetermined period within the pre-wakeup period, than an average dimming ratio in the pre-wakeup period and sound stimulus control in which the sound source is caused to output the stimulus sound.

An illumination device, comprising:

• a light source configured to irradiate light;
• and
• a control unit configured to control a turn-on operation of the light source,
• wherein the illumination device is configured to gradually increase a dimming ratio of the light source in a pre-wakeup period between a predetermined time earlier than a wakeup setting time and the wakeup setting time, and
• the control unit is configured to, during the pre-wakeup period, intermittently execute light stimulus control in which the dimming ratio of the light source is made higher, for a predetermined period within the pre-wakeup period, than an average dimming ratio in the pre-wakeup period.

An illumination device, comprising:

• a device body attached to an installation surface of an indoor area;
• a plurality of light sources provided in the device body;
• and
• a control unit configured to control dimming ratios of the light sources,
• wherein the control unit is configured to control turn-on operations of the light sources so as to individually irradiate light on a first region including an indoor ceiling surface, a second region including a wall surface and a third region including a floor surface, pursuant to a predetermined time schedule.