Road surface rendering device

1 . A road surface rendering device mounted on a vehicle for projecting an area marker on a road surface around the vehicle,

wherein the road surface rendering device is configured to:

constantly project the area marker at least during nighttime traveling of the vehicle; and

in a case where a traveling state of the vehicle changes such that the vehicle is accelerated, transition a projection region of the area marker from a first region to a second region different from the first region.

2 . The road surface rendering device according to claim 1 ,

wherein the road surface rendering device is configured to position the second region farther from the vehicle as compared with the first region.

3 . The road surface rendering device according to claim 1 ,

wherein the first region and the second region do not overlap each other.

4 . The road surface rendering device according to claim 1 ,

wherein the second region includes the first region and a region other than the first region.

5 . The road surface rendering device according to claim 1 ,

wherein the road surface rendering device is configured to project a color of the area marker onto the first region and project a color of the area marker onto the second region that is different from the color projected onto the first region.

6 . The road surface rendering device according to claim 1 , wherein the second region is different in a front and a rear direction from the first region.

7 . The road surface rendering device according to claim 6 , wherein the road surface rendering device is configured to:

position the first region that includes a first front region in front of the vehicle; and

position the second region that includes a second front region farther forward from the vehicle as compared with the first front region; and

transition the projection region of the area marker from the first front region to the second front region.

8 . The road surface rendering device according to claim 7 , wherein the road surface rendering device is configured to:

position the first region that includes a first rear region in rear of the vehicle;

position the second region that includes a second rear region farther rearward from the vehicle as compared with the first rear region;

in a case where the vehicle is decelerated, transition the projection region of the area marker from the first rear region to the second rear region; and

project the area marker onto an intermediate positioned region between the first front region and the first rear region.

9 . The road surface rendering device according to claim 1 , wherein the road surface rendering device is configured to:

position the first region that includes a first rear region in rear of the vehicle;

position the second region that includes a second rear region farther rearward from the vehicle as compared with the first rear region; and

in a case where the vehicle is decelerated, transition the projection region of the area marker from the first rear region to the second rear region.

10 . The road surface rendering device according to claim 1 , wherein the road surface rendering device is configured to:

position the first region that includes a first left side positioned region on a left side of the vehicle;

position the second region that includes a second left side region farther leftward from the vehicle as compared with the first left side region; and

in a case where the vehicle turns left, transition the projection region of the area marker from the first left side region to the second left side region.

11 . The road surface rendering device according to claim 1 , wherein the road surface rendering device is configured to:

position the first region that includes a first right side region on a right side of the vehicle;

position the second region that includes a second right side region farther rightward from the vehicle as compared with the first right side region; and

in a case where the vehicle turns right, transition the projection region of the area marker from the first right side region to the second right side region.

12 . The road surface rendering device according to claim 1 ,

wherein the vehicle is a vehicle configured to turn by inclining a vehicle body in a bending direction.

13 . The road surface rendering device according to claim 10 ,

wherein the vehicle is a vehicle configured to turn by inclining a vehicle body in a bending direction,

in a case where the vehicle turns left, the road surface rendering device is configured to position the projection region of the area marker farther leftward as compared with the first left side region and the second left side region that are projected when the vehicle travels straight; and

in a case where the vehicle turns right, the road surface rendering device is configured to position the projection region of the area marker farther rightward as compared with the first right side region and the second right side region that are projected when the vehicle travels straight.

14 . A road surface rendering device according to claim 1

wherein in response to a determination that calling attention of a traffic participant is required, the road surface rendering device is configured to transition a projection region of the area marker from a first region to a second region different from the first region.

15 . The road surface rendering device according to claim 14 comprising:

a controller configured to:

acquire a traveling state of the vehicle;

acquire information on the traffic participant;

determine that the attention of the traffic participant is required to be called, in a case where the traveling state of the vehicle and the information on the traffic participant satisfy a predetermined condition; and

cause the projection region of the area marker to transition from the first region to the second region, in a case where the controller determines that the calling of attention is required.