Display device for vehicle

1. A display device for a vehicle, the display device displaying vehicle information associated with the vehicle and comprising:

a first display unit that displays a real image of first information in a first display portion inside the vehicle, the first information indicating the vehicle information;

a second display unit that displays a virtual image of second information in a second display portion inside the vehicle by projecting an optical image to the second display portion, the second display portion being disposed above the first display portion and transmitting an external image, and the second information indicating the vehicle information;

a light emission unit that forms a light emission area in a light emission portion inside the vehicle and adjacent to a side of the first display portion; and

a control unit that controls the first display unit and the second display unit, and controls the light emission unit, the control unit changing the light emission area in a guiding direction from the first display portion toward the second display portion during a linking period for linking a particular virtual image display of the second information with a real image display of the first information, wherein

the control unit sets a maintaining period for maintaining a light emission state of the light emission area when a linking condition for linking the particular virtual image display of the second information with the real image display of the first information is not met, and

the control unit sets the linking period when the linking condition is met.

2. The display device according to claim 1 , wherein:

the light emission portion includes an adjacent light emission area that is the light emission area and lies at an adjacent position disposed adjacent to a side edge of the first display portion and extending along the side edge, and includes a separate light emission area that is the light emission area and lies at a separate position disposed away from the side edge of the first display portion through the adjacent light emission area;

the control unit maintains the adjacent light emission area in a light emission state, and maintains the separate light emission area in a non-emission state during the maintaining period; and

the control unit changes both the adjacent light emission area and the separate light emission area in the guiding direction during the linking period.

3. The display device according to claim 1 , wherein:

the light emission portion includes an adjacent light emission area that is the light emission area and lies at an adjacent position disposed adjacent to a side edge of the first display portion and extending along the side edge, and includes a separate light emission area that is the light emission area and lies at a separate position disposed away from the side edge of the first display portion through the adjacent light emission area; and

the control unit changes both the adjacent light emission area and the separate light emission area in the guiding direction during the linking period.

4. The display device according to claim 3 , wherein the control unit changes the separate light emission area from the separate position to a position above the first display portion during the linking period.

5. The display device according to claim 1 , wherein the control unit shifts the light emission area in the guiding direction during the linking period.

6. The display device according to claim 1 , wherein the control unit increases a size of the light emission area in the guiding direction during the linking period.

7. The display device according to claim 6 , wherein the control unit increases the size of the light emission area in the guiding direction, and then decreases the size of the light emission area in the guiding direction during the linking period.

8. A display device for a vehicle, the display device displaying vehicle information associated with the vehicle and comprising:

a first display unit that displays a real image of first information in a first display portion inside the vehicle, the first information indicating the vehicle information;

a second display unit that displays a virtual image of second information in a second display portion inside the vehicle by projecting an optical image to the second display portion, the second display portion being disposed above the first display portion and transmitting an external image, and the second information indicating the vehicle information;

a light emission unit that forms a light emission area in a light emission portion inside the vehicle and adjacent to a side of the first display portion; and

a processor that controls the first display unit and the second display unit, and controls the light emission unit, the processor changing the light emission area in a guiding direction from the first display portion toward the second display portion during a linking period for linking a particular virtual image display of the second information with a real image display of the first information, wherein

the processor sets a maintaining period for maintaining a light emission state of the light emission area when a linking condition for linking the particular virtual image display of the second information with the real image display of the first information is not met, and

the processor sets the linking period when the linking condition is met.

9. The display device according to claim 8 , wherein:

the light emission portion includes an adjacent light emission area that is the light emission area and lies at an adjacent position disposed adjacent to a side edge of the first display portion and extending along the side edge, and includes a separate light emission area that is the light emission area and lies at a separate position disposed away from the side edge of the first display portion through the adjacent light emission area;

the processor maintains the adjacent light emission area in a light emission state, and maintains the separate light emission area in a non-emission state during the maintaining period; and

the processor changes both the adjacent light emission area and the separate light emission area in the guiding direction during the linking period.

10. The display device according to claim 8 , wherein:

the light emission portion includes an adjacent light emission area that is the light emission area and lies at an adjacent position disposed adjacent to a side edge of the first display portion and extending along the side edge, and includes a separate light, emission area that is the light emission area and lies at a separate position disposed away from the side edge of the first display portion through the adjacent light emission area; and

the processor changes both the adjacent light emission area and the separate light emission area in the guiding direction during the linking period.

11. The display device according to claim 10 , wherein the processor changes the separate light emission area from the separate position to a position above the first display portion during the linking period.

12. The display device according to claim 8 , wherein the processor shifts the light emission area in the guiding direction during the linking period.

13. The display device according to claim 8 , wherein the processor increases a size of the light emission area in the guiding direction during the linking period.

14. The display device according to claim 13 , wherein the processor increases the size of the light emission area in the guiding direction, and then decreases the size of the light emission area in the guiding direction during the linking period.