Patent ID: 11945369
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Transport (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 9:
10. A display device installed in a vehicle, the display device comprising:
a display including a display surface on which video is displayed and being switched between ON and OFF;
a reflectance control device positioned on a display surface side of the display and configured to change a reflectance for incident light; and
a control circuit configured to control
the reflectance of the reflectance control device,
switching between ON and OFF of the display, and
the video displayed on the display surface, wherein

the reflectance control device includes a first part and a second part, the first part being positioned in a first region overlapping the display surface when viewed in a normal direction, the normal direction being normal to the display surface, the second part being positioned in a second region surrounding the first region when viewed in the normal direction of the display surface, and
the control circuit controls a reflectance of the second part based on at least one of speed information indicating a speed of the vehicle or reverse information indicating whether the vehicle is reversing,
at least one of first illuminance information received from a first illuminance sensor detecting an illuminance of a front of the vehicle and second illuminance information received from a second illuminance sensor detecting an illuminance of a rear of the vehicle,
the control circuit controls the reflectance control device such that the reflectance of the second part is set to a first reflectance when the illuminance of the rear of the vehicle based on the second illuminance information is lower than a first illuminance threshold or when the reverse information does not indicate that the vehicle is reversing,
the control circuit controls the reflectance control device such that the reflectance of the second part is set to a second reflectance being lower than the first reflectance when the illuminance of the rear of the vehicle based on the second illuminance information is equal to or higher than the first illuminance threshold, and
the reverse information indicates that the vehicle is reversing.