Information provision system

1. An information provision system mounted on a vehicle and comprising:

a visual device configured to visually provide information to an occupant of the vehicle; and

a controller configured to control the visual device, wherein

the controller is further configured to:

cause the visual device to provide first information in a first period;

cause the visual device to provide second information different from the first information in a second period later than the first period; and

set at least one of a luminance and a saturation of the visual device in at least a part of an information switching period between the first period and the second period to be lower than that in the first period and the second period, wherein

at least one of the luminance and the saturation in the second period is different than in the first period.

2. The information provision system according to claim 1 , wherein

the visual device is installed on a dashboard of the vehicle.

3. The information provision system according to claim 1 , wherein

the visual device represents the first information in a first color and represents the second information in a second color different from the first color.

4. The information provision system according to claim 1 , wherein

the vehicle is an automated driving vehicle that performs automated driving.

5. The information provision system according to claim 4 , wherein

one of the first information and the second information is information demanding of a driver of the vehicle to grab a steering wheel during the automated driving, and

another of the first information and the second information is information notifying that the driver is allowed to get hands off of the steering wheel during the automated driving.

6. The information provision system according to claim 1 , wherein

in response to a trigger, the controller switches the information provided through the visual device from the first information to the second information, and

the trigger includes a change in driving environment that requires attention of a driver of the vehicle.

7. The information provision system according to claim 6 , wherein

the trigger includes at least one of a change in an operation required for the driver, a change in an automated driving level of the vehicle, activation of driving assist control that assists driving of the vehicle, detection of a previous stage of the activation of the driving assist control, start of a preceding vehicle, and approach of a surrounding vehicle.

8. The information provision system according to claim 1 , the visual device comprising a display panel, and a luminescent device having a plurality of LEDs.

9. The information provision system of claim 8 , wherein the plurality of LEDs of the luminescent device are arranged in a band shape.

10. The information provision system of claim 8 , wherein the plurality of LEDs of the luminescent device are arranged as to surround the display panel.

11. An information provision system mounted on a vehicle and comprising:

a visual device configured to visually provide information to an occupant of the vehicle; and

a controller configured to control the visual device, wherein

when an operation expected of a driver of the vehicle is not performed by the driver, the controller causes the visual device to blink, and

the controller is further configured to:

cause the visual device to provide first information in a first period;

cause the visual device to provide second information different from the first information in a second period later than the first period; and

set at least one of a luminance and a saturation of the visual device in at least a part of an information switching period between the first period and the second period to be lower than that in the first period and the second period, wherein

at least one of the luminance and the saturation in the second period is different than in the first period.