JP7803246B2 - Display System - Google Patents

Description

This disclosure relates to a display system mounted on a moving object.

In moving objects such as vehicles and ships, occupants may become motion sick when viewing images displayed on a display device. This so-called motion sickness can occur, for example, when the bodily sensations experienced when the vehicle accelerates, decelerates, or turns do not match the visual information obtained when viewing the images. Technology has been proposed to prevent the onset of motion sickness that occurs when viewing images on such moving objects. Patent Document 1 discloses technology that displays a large number of predetermined shapes, such as circles or squares, as motion sickness prevention information on the windshield or LCD display in addition to the displayed image, and moves this motion sickness prevention information in accordance with the movement of the vehicle, thereby matching the bodily sensations experienced by the occupants with the visual information.

Japanese Patent Application Laid-Open No. 2021-86552

However, the motion sickness prevention system of Patent Document 1 displays a large number of shapes, such as circles, that act as motion sickness prevention information in addition to the displayed image, making it cumbersome for occupants to view the displayed images. In particular, in autonomously driven vehicles, it is expected that occupants will view moving images displayed on a display device such as an LCD screen, and the presence of motion sickness prevention information can be extremely cumbersome when viewing such moving images. Furthermore, it is expected that occupants will be viewing moving images on an LCD screen or reading during autonomous driving, and in such cases, displaying motion sickness prevention information on the windshield will not provide the "motion sickness prevention" effect. As such, there is still room for further improvement in motion sickness prevention in moving vehicles.

The present disclosure has been made to solve at least part of the above-mentioned problems, and can be realized in the following aspects.
[Form 1] A display system for use mounted on a moving body, the display system comprising: a display device having a display unit capable of displaying images; and a control device for controlling the display device, the control device having a motion information acquisition unit that acquires motion information indicating at least one of a predicted motion of the moving body and a real motion that is the actual motion of the moving body; and a display adjustment unit that adjusts at least one of the size and position of the display image as seen by an occupant of the moving body by adjusting at least one of the size of a display image displayed on the display unit, the display position of the display image on the display unit, and the position of the display unit in accordance with the motion of the moving body indicated by the motion information, wherein the display unit is disposed on the moving body in the direction of travel of the moving body as seen by the occupant, and the display adjustment unit adjusts at least one of (e1) moving the display position downward when the motion information indicates that the motion of the moving body is leaning forward, and (f1) moving the display position upward when the motion information indicates that the motion of the moving body is leaning backward, in accordance with the motion of the moving body indicated by the motion information.
[Mode 2] A display system mounted on a moving body and used, comprising: a display device having a display unit capable of displaying images; and a control device for controlling the display device, the control device having: a motion information acquisition unit that acquires motion information indicating at least one of a predicted motion of the moving body and a real motion that is an actual motion of the moving body; and a display adjustment unit that adjusts at least one of a size of a display image displayed on the display unit, a display position of the display image on the display unit, and a position of the display unit, in accordance with the motion of the moving body indicated by the motion information, thereby adjusting at least one of a size and a position of the display image as seen by an occupant of the moving body, wherein the display unit is disposed in the moving body in a traveling direction of the moving body as seen by the occupant, and the display adjustment unit (a3) when the motion of the moving body indicated by the motion information is acceleration, displays the display unit to the occupant in a direction parallel to the traveling direction of the moving body. (b2) moving the display unit closer to the occupant in a direction parallel to the direction of travel of the moving body when the movement of the moving body indicated by the movement information is deceleration; (c3) moving the display unit to the left when the movement of the moving body indicated by the movement information is to turn right; and (d3) moving the display unit to the right when the movement of the moving body indicated by the movement information is to turn left, in accordance with the movement of the moving body indicated by the movement information of the moving body, and the display adjustment unit performs at least one of: (a4) adjusting the approaching speed of the display unit in accordance with the magnitude of acceleration of the moving body; (b4) adjusting the moving away speed of the display image in accordance with the magnitude of deceleration of the moving body; (c4) adjusting the moving left speed of the display unit in accordance with the moving speed of the moving body when turning right; and (d4) adjusting the moving right speed of the display unit in accordance with the moving speed of the moving body when turning left.

(1) According to one aspect of the present disclosure, there is provided a display system for use mounted on a moving body, the display system including: a display device having a display unit capable of displaying an image; and a control device for controlling the display device, the control device including: a motion information acquisition unit that acquires motion information indicating at least one of a predicted motion of the moving body and a real motion that is an actual motion of the moving body; and a display adjustment unit that adjusts at least one of a size of a display image displayed on the display unit, a display position of the display image on the display unit, and a position of the display unit, in accordance with the motion of the moving body indicated by the motion information, thereby adjusting at least one of the size and position of the display image as seen by an occupant of the moving body.
According to this display system, the display adjustment unit adjusts at least one of the size and position of the display image displayed on the display unit and the display position of the display unit in accordance with the movement of the moving body indicated by the movement information, thereby adjusting at least one of the size and position of the display image as seen by the occupant of the moving body. This makes it possible to match the bodily sensation of the movement of the moving body with the information obtained visually when viewing the display image. This makes it possible to prevent occupants of the moving body from feeling sick when viewing the display image. Furthermore, since the display unit does not display graphics or other elements to prevent sickness in addition to the display image, it is possible to reduce the inconvenience to the occupants.
(2) In the display system of the above form, the display system may further include a position adjustment device connected to the display device and adjusting the position of the display device within the moving body, and the display adjustment unit may control the position adjustment device to adjust the position of the display device within the moving body, thereby displacing the position of the display unit and adjusting at least one of the size and position of the display image as seen by the occupant.
According to this type of display system, the display adjustment unit controls the position adjustment device to adjust the position of the display device within the vehicle, thereby displacing the position of the display unit and adjusting at least one of the size and position of the displayed image as seen by the occupant, thereby ensuring that at least one of the size and position of the displayed image as seen by the occupant can be adjusted.
(3) In the display system of the above form, the moving body has at least one of a navigation device having set route information, a status sensor that detects the current operating state of the moving body, and an imaging device that images the surroundings of the moving body, and the control device further has a motion prediction unit that identifies the predicted operation from at least one of the route information acquired from the navigation device, the operating state detected by the status sensor, and the image obtained by the imaging device, and the operation information acquisition unit may acquire information indicating the predicted operation identified by the operation prediction unit as the operation information.
According to this form of display system, the control device further has an action prediction unit that identifies a predicted action from at least one of the route information acquired from the navigation device, the action state detected by the status sensor, and the captured image obtained by the imaging device, and the action information acquisition unit acquires information indicating the predicted action identified by the action prediction unit as action information, so that highly accurate actions can be predicted as predicted actions, and since such highly accurate predicted actions are used as action information, the occurrence of motion sickness can be more reliably suppressed.
(4) In the display system of the above form, the moving body may have a status sensor that detects the current operating state of the moving body, and the operation information acquisition unit may acquire information indicating the operating state detected by the status sensor as the operation information indicating the actual operation.
According to this type of display system, the motion information acquisition unit acquires information indicating the motion state detected by the state sensor possessed by the moving body as motion information indicating the actual motion, so that highly accurate motion can be identified as the actual motion, and since the information indicating such highly accurate motion state is used as motion information, the occurrence of motion sickness can be more reliably suppressed.
(5) In the display system of the above form, the display unit is disposed in the moving body in the direction of travel of the moving body as seen by the occupant, and the display adjustment unit may adjust at least one of the following in accordance with the movement of the moving body indicated by the movement information: (a1) enlarging the display image when the movement of the moving body indicated by the movement information is accelerating; (b1) reducing the display image when the movement of the moving body indicated by the movement information is decelerating; (c1) moving the display position to the left when the movement of the moving body indicated by the movement information is turning right; (d1) moving the display position to the right when the movement of the moving body indicated by the movement information is turning left; (e1) moving the display position downward when the movement of the moving body indicated by the movement information is leaning forward; and (f1) moving the display position upward when the movement of the moving body indicated by the movement information is leaning backward.
According to this type of display system, at least one of the following is adjusted according to the movement of the moving body indicated by the movement information: enlarging the display image when the moving body's movement is accelerating; reducing the display image when the moving body's movement is decelerating; moving the display position to the left when the moving body's movement is turning right; moving the display position to the right when the moving body's movement is turning left; moving the display position down when the moving body's movement is leaning forward; and moving the display position up when the moving body's movement is leaning backward.This makes it possible to more closely match the physical sensation of the moving body's movement with the information obtained visually when viewing the display image.
(6) In the display system of the above form, the display adjustment unit may perform at least one of the following: (a2) adjusting the magnification ratio of the display image in accordance with the magnitude of the acceleration of the moving body; (b2) adjusting the reduction ratio of the display image in accordance with the magnitude of the deceleration of the moving body; (c2) adjusting the speed at which the display position moves to the left in accordance with the speed at which the moving body moves when turning right; (d2) adjusting the speed at which the display position moves to the right in accordance with the speed at which the moving body moves when turning left; (e2) adjusting the amount of downward movement of the display position in accordance with the angle of forward tilt of the moving body; and (f2) adjusting the amount of upward movement of the display position in accordance with the angle of backward tilt of the moving body.
According to this type of display system, at least one of the following is performed: adjusting the magnification rate of the display image according to the magnitude of the acceleration of the moving body; adjusting the reduction rate of the display image according to the magnitude of the deceleration of the moving body; adjusting the speed at which the display position moves to the left according to the speed at which the moving body moves when turning right; adjusting the speed at which the display position moves to the right according to the speed at which the moving body moves when turning left; adjusting the amount of downward movement of the display position according to the angle at which the moving body leans forward; and adjusting the amount of upward movement of the display position according to the angle at which the moving body leans backward, thereby making it possible to more closely match the physical sensation of the moving body's movement with the information obtained visually when viewing the display image.
(7) In the display system of the above aspect, the display unit is disposed in the moving body in a traveling direction of the moving body as seen from the occupant, and the display adjustment unit (a3) moves the display unit closer to the occupant along a direction parallel to the traveling direction of the moving body when the movement information indicates that the movement of the moving body is accelerating; (b3) moves the display unit away from the occupant along a direction parallel to the traveling direction of the moving body when the movement information indicates that the movement of the moving body is decelerating; and (c3) adjusts the display unit to adjust the movement information. At least one of the following may be adjusted according to the movement of the moving body indicated by the movement information: (d1) moving the display unit to the left when the movement of the moving body indicated by the movement information is to turn right; (d2) moving the display unit to the right when the movement of the moving body indicated by the movement information is to turn left; (e3) moving the display unit down when the movement of the moving body indicated by the movement information is to lean forward; and (f3) moving the display unit up when the movement of the moving body indicated by the movement information is to lean backward.
According to this type of display system, at least one of the following is adjusted according to the movement of the moving body indicated by the movement information: when the movement of the moving body is accelerating, the display unit is moved closer to the occupant in a direction parallel to the direction of travel of the moving body; when the movement of the moving body is decelerating, the display unit is moved away from the occupant in a direction parallel to the direction of travel of the moving body; when the movement of the moving body is turning right, the display unit is moved left; when the movement of the moving body is turning left, the display unit is moved right; when the movement of the moving body is leaning forward, the display unit is moved down; and when the movement of the moving body is leaning backward, the display unit is moved up.This makes it possible to more closely match the physical sensation of the movement of the moving body with the information obtained visually when viewing the displayed image.
(8) In the display system of the above form, the display adjustment unit may perform at least one of the following: (a4) adjusting the approach speed of the display unit in accordance with the magnitude of the acceleration of the moving body; (b4) adjusting the receding speed of the display image in accordance with the magnitude of the deceleration of the moving body; (c4) adjusting the left movement speed of the display unit in accordance with the movement speed of the moving body when turning right; (d4) adjusting the right movement speed of the display unit in accordance with the movement speed of the moving body when turning left; (e4) adjusting the amount of downward movement of the display unit in accordance with the angle of forward tilt of the moving body; and (f4) adjusting the amount of upward movement of the display unit in accordance with the angle of backward tilt of the moving body.
According to this type of display system, at least one of the following is performed: adjusting the approach speed of the display unit according to the magnitude of the acceleration of the moving body; adjusting the receding speed of the display unit according to the magnitude of the deceleration of the moving body; adjusting the left movement speed of the display unit according to the movement speed of the moving body when turning right; adjusting the right movement speed of the display unit according to the movement speed of the moving body when turning left; adjusting the amount of downward movement of the display unit according to the angle of forward tilt of the moving body; and adjusting the amount of upward movement of the display unit according to the angle of backward tilt of the moving body.This makes it possible to more closely match the physical sensation of the moving body's movement with the information obtained visually when viewing the displayed image.
The present disclosure can be realized in various forms, such as a vehicle equipped with a display system, a display position adjustment device, a display adjustment method, a computer program for realizing these systems, devices, and methods, and a storage medium storing such a computer program.

1 is a block diagram showing a configuration of a display system according to an embodiment of the present disclosure. FIG. 10 is an explanatory diagram showing a specific example of application of the display system to a vehicle. FIG. 10 is an explanatory diagram showing a specific example of application of the display system to a vehicle. 10 is a flowchart illustrating a procedure for a display adjustment process in the first embodiment. 10A to 10C are explanatory diagrams illustrating a change in a display image when a display adjustment process is executed in the present embodiment. 10 is a flowchart illustrating a procedure for a display adjustment process according to a second embodiment. 10 is a flowchart illustrating a procedure for a display adjustment process according to a second embodiment. 11 is a flowchart showing the procedure of a display adjustment process in the third embodiment. 13A to 13C are explanatory diagrams schematically illustrating changes in the display device and the displayed image when a display adjustment process is executed in the third embodiment. 13 is a flowchart illustrating a procedure for a display adjustment process according to a fourth embodiment.

A. First embodiment:
A1. System configuration:
FIG. 1 is a block diagram showing the configuration of a display system 100 according to an embodiment of the present disclosure. In this embodiment, the display system 100 is mounted on a vehicle VL for use. In this embodiment, the vehicle VL is capable of both manual and automatic driving. Automatic driving refers to driving in which at least some of the driving functions, such as steering, acceleration, and braking, are automated. Note that the vehicle VL may be capable of only manual driving or only automatic driving. Furthermore, the display system 100 may be mounted on any type of moving object, such as a ship or an aircraft, for use, in addition to the vehicle VL.

In addition to the display system 100, the vehicle VL is equipped with a status sensor 901, an imaging device 902, and a navigation device 903. The status sensor 901 is a sensor for detecting the current operating state of the vehicle VL. Examples of the status sensor 901 include a vehicle speed sensor, a yaw rate sensor, a gyro sensor, an acceleration sensor, a load (G) sensor, a temperature sensor, a brightness sensor, and a rainwater sensor. In this embodiment, a sensor capable of detecting four types of operating states of the vehicle VL, at least while traveling, namely, whether the vehicle VL is accelerating, decelerating, turning right, turning left, leaning forward, or leaning backward, is used as the status sensor 901. "Leaning forward" refers to a state in which the front side of the vehicle VL is facing upward relative to the horizontal. For example, the vehicle VL leans forward when traveling uphill. "Leaning backward" refers to a state in which the rear side of the vehicle VL is facing upward relative to the horizontal (in other words, the front side of the vehicle VL is facing downward). For example, when traveling downhill, the vehicle VL will tilt forward.

The imaging device 902 captures images of the surroundings of the vehicle VL to obtain captured images. These captured images are used, for example, to determine the current position of the vehicle VL and to identify obstacles such as other vehicles and pedestrians present around the vehicle VL. The navigation device 903 has route information 904 set by the occupant of the vehicle VL. In the vehicle VL, map information and a planned route are displayed using the display system 100, and the vehicle VL is automatically driven in accordance with the route information 904.

The display system 100 comprises a display device 20, a position adjustment device 30, and a control device 10. The display device 20 comprises a display unit 21, a microphone 22, a speaker 23, and a camera 24. The display unit 21 is capable of displaying images. "Image" is a broad concept that includes not only still images showing various operation menu screens and various SNS content, but also moving images such as video showing the surrounding situation obtained by a status sensor (described below) and video content such as movies. In this embodiment, the display unit 21 is composed of a liquid crystal display device with touch panel functionality.

The position adjustment device 30 is connected to the display device 20 and adjusts the position of the display device 20 within the vehicle VL (the passenger compartment CA, described below). The detailed configuration of the position adjustment device 30 will be described later.

The control device 10 controls the display device 20. "Controlling the display device 20" has a broad meaning that includes not only controlling the display operation and display content of the display device 20, but also adjusting the position of the display device 20 by controlling the position adjustment device 30. In this embodiment, the control device 10 is configured as a computer including a CPU 11, a wireless communication device 12, a ROM 13, and a RAM 14, which are capable of communicating with each other via an internal bus 15. For example, the control device 10 may be configured as an ECU (Electronic Control Unit) mounted on the vehicle VL. A control program is pre-stored in the ROM 13, and the CPU 11 loads and executes the control program in the RAM 14, thereby functioning as an operation prediction unit 111, an operation information acquisition unit 112, and a display adjustment unit 113.

The operation prediction unit 111 identifies the predicted operation of the vehicle VL (hereinafter referred to as the "predicted operation"). In this embodiment, the predicted operation refers to the operation of the vehicle VL 1 to 10 seconds from now. For example, it may be the operation of the vehicle VL 3 seconds from now. Note that the "predicted operation" is not limited to 1 to 10 seconds, but may also be the operation of the vehicle VL after any time period less than 1 second or longer than 10 seconds. In this embodiment, the operation prediction unit 111 identifies the predicted operation from at least one of the route information 904 acquired from the navigation device 903, the operation state of the vehicle VL detected by the status sensor 901 (hereinafter also simply referred to as the "operation state"), and the captured image acquired by the imaging device 902. For example, if it is estimated based on the route information 904 that the vehicle will approach a right curve in 3 seconds given its current vehicle speed, the predicted operation is identified as "turn right." Furthermore, for example, if the acceleration detected by the acceleration sensor is a positive acceleration in the direction of travel of the vehicle VL, the predicted operation is identified as "accelerate." Furthermore, for example, if an uphill road about 20 to 30 meters ahead is visible in the image captured by the imaging device 902, the predicted movement will be identified as "leaning forward." It should be noted that the predicted movement may be identified by combining multiple pieces of information, such as if it is determined based on the route information 904 that a left curve will be reached in three seconds, and an acceleration to the left and a yaw rate to the left are detected, then "turn left" will be identified.

The motion information acquisition unit 112 acquires motion information indicating the predicted motion from the motion prediction unit 111.

The display adjustment unit 113 adjusts the size and position of the display image displayed on the display unit 21 as seen by the occupant. As described below, in this embodiment, the display adjustment unit 113 adjusts the size and position of the display image displayed on the display unit 21 as seen by the occupant by adjusting the size and display position of the display image on the display unit 21.

The wireless communication device 12 communicates wirelessly with the display device 20 and the position adjustment device 30. Such wireless communication may utilize, for example, a wireless LAN defined by IEEE 802.11, or wireless communication defined by any standard such as Bluetooth (registered trademark) or ZigBee (registered trademark). Note that the control device 10 may be equipped with a wired communication device instead of the wireless communication device 12 and may communicate wired with the display device 20 and the position adjustment device 30.

2 and 3 are explanatory diagrams showing a specific example of application of the display system 100 to a vehicle VL. Note that in FIG. 3, the reference numerals of some of the elements constituting the display device 20 have been omitted for convenience of illustration. As shown in FIGS. 2 and 3, the display device 20 and the position adjustment device 30 of the display system 100 are disposed in the passenger compartment CA, and the other components are disposed in the front passenger compartment FR. FIGS. 2 and 3 show the interior of the passenger compartment CA of the vehicle VL during autonomous driving. In the example of FIG. 2, an occupant p1 is seated in a seat DRS disposed in the passenger compartment CA, and the occupant p1 is viewing a moving image (not shown) displayed on the display device 20. In this embodiment, during autonomous driving, the steering device 800 is basically accommodated in a storage space SP provided in the dashboard 700, as shown in FIG. 2. This storage space SP has an opening 703 on the passenger compartment CA side, and the steering device 800 and the position adjustment device 30 are inserted and removed through this opening 703. In contrast, for example, when the time to switch from automated driving to manual driving approaches, as shown in FIG. 3, the steering device 800 is exposed from the storage space SP into the passenger compartment CA through the opening 703 and can be operated by the occupant p1. In the example of FIG. 3, the occupant p1 checks map information on the display unit 21 and operates a menu screen to change the reclining angle and seat position of the seat DRS.

2 and 3, the position adjustment device 30 functions like a link mechanism to adjust the position of the display device 20 within the passenger compartment CA. This allows the display device 20 to be displaced forward, backward, to the right, left, upper, or lower as viewed by occupant p1. One end of the position adjustment device 30 is fixed to a support member (not shown) provided in the front passenger compartment FR via the storage space SP, and the other end is connected to the display device 20. The position adjustment device 30 includes a first arm 321, a first joint 322, a second arm 323, a second joint 324, a third arm 325, a third joint 326, a fourth arm 327, and a fourth joint 328. The position adjustment device 30 also includes a drive unit (not shown) having a motor that independently drives each of the joints 322 to 328. The drive unit drives the motors in response to instructions from the control device 10, thereby independently driving (moving) each of the joints 322-328.

The first arm 321 is connected to the display device 20. In this embodiment, one end of the first arm 321 is connected to the display device 20 via a connector (not shown) for adjusting the angle. This allows the position adjustment device 30 to tilt the display device 20 so that it forms an angle with respect to the vertical direction. The first joint 322 connects the other end of the first arm 321 to the second arm 323. The first joint 322 is a ball joint that can displace the first arm 321 by bending it in the front-to-rear, up-down, and left-to-right directions of the vehicle VL. Figure 2 shows the first joint 322 extended so that the first arm 321 is positioned further rearward than in the state shown in Figure 3. By bending the first arm 321, the display device 20 connected to the first arm 321 is displaced rearward of the vehicle VL.

The second arm 323 is connected to the first arm 321 via the first joint 322. The second arm 323 is also connected to the third arm 325 via the second joint 324. The second joint 324 connects the second arm 323 to the third arm 325. The second joint 324 is a ball joint that can displace the second arm 323 in the front-to-rear and up-to-down directions of the vehicle VL by bending the second arm 323 in these directions. Figure 2 shows a state in which the second joint 324 is extended so that the second arm 323 is positioned further rearward than in the state shown in Figure 3. By displacing the second arm 323, the display device 20 connected to the first arm 321, which is connected to the second arm 323 via the first joint 322, is displaced rearward of the vehicle VL.

The third arm 325 is connected to the fourth arm 327 via the third joint 326. The third joint 326 is a ball joint that allows the third arm 325 to bend in the front-to-rear, up-down, and left-to-right directions of the vehicle VL. By displacing the third arm 325, the display device 20, which is connected to the third arm 325 via the first joint 322 and the second joint 324, can also be displaced.

The fourth arm 327 is connected to the fourth joint 328. The fourth joint 328 is connected to a support member (not shown) provided in the front passenger compartment FR on the opposite side of the dashboard 700 from the passenger compartment CA. This secures the position adjustment device 30 to the vehicle VL. The fourth joint 328 is a ball joint that can displace the fourth arm 327 by bending it in the fore-and-aft, up-and-down, and left-and-right directions of the vehicle 1. In this embodiment, the tilt of the steering device 800 and the position of the position adjustment device 30 are adjusted so that the steering device 800 and the position of the position adjustment device 30 do not come into contact with each other.

A2. Display adjustment process:
Fig. 4 is a flowchart showing the procedure of the display adjustment process in the first embodiment. In the display system 100 having the above configuration, the display adjustment process shown in Fig. 4 is executed after the vehicle VL is started (after it is started). The display adjustment process is a process for adjusting at least one of the size and position of the display image (hereinafter also simply referred to as "display image") displayed on the display unit 21 as seen by the occupant p1 of the vehicle VL.

The motion information acquisition unit 112 acquires motion information regarding the predicted motion from the motion prediction unit 111 (step S100). The display adjustment unit 113 identifies the predicted motion based on the motion information acquired in step S100 (step S105).

The display adjustment unit 113 determines whether the predicted motion is "acceleration" (step S110). If the predicted motion is determined to be "acceleration" (step S110: YES), the display adjustment unit 113 enlarges the display image (step S115). In this embodiment, the enlargement ratio in step S115 is a predetermined value.

If it is determined that the predicted motion is not "acceleration" (step S110: NO), the display adjustment unit 113 determines whether the predicted motion is "deceleration" (step S120). If it is determined that the predicted motion is "deceleration" (step S120: YES), the display adjustment unit 113 reduces the display image (step S125). In this embodiment, the reduction ratio in step S125 is a predetermined value.

If it is determined that the predicted action is not "slow down" (step S120: NO), the display adjustment unit 113 determines whether the predicted action is "turn right" (step S130). If it is determined that the predicted action is "turn right" (step S130: YES), the display adjustment unit 113 moves the display position of the display image to the left (step S135). In this embodiment, the amount of movement in step S135 is a predetermined value.

If it is determined that the predicted action is not "turn right" (step S130: NO), the display adjustment unit 113 determines whether the predicted action is "turn left" (step S140). If it is determined that the predicted action is "turn left" (step S140: YES), the display adjustment unit 113 moves the display position of the display image to the right (step S145). In this embodiment, the amount of movement in step S145 is a predetermined value.

If it is determined that the predicted action is not "turn left" (step S140: NO), the display adjustment unit 113 determines whether the predicted action is "lean forward" (step S150). If it is determined that the predicted action is "lean forward" (step S150: YES), the display adjustment unit 113 moves the display position of the display image downward (step S155). In this embodiment, the amount of movement in step S155 is a predetermined value.

If it is determined that the predicted motion is not "leaning forward" (step S150: NO), the display adjustment unit 113 determines whether the predicted motion is "leaning backward" (step S160). If it is determined that the predicted motion is "leaning backward" (step S160: YES), the display adjustment unit 113 moves the display position of the display image upward (step S165). In this embodiment, the amount of movement in step S165 is a predetermined value.

On the other hand, if it is determined that the predicted movement is not "backward lean" (step S160: NO), processing returns to step S100. Processing also returns to step S100 after the completion of steps S115, S125, S135, S145, S155, and S165 described above.

Figure 5 is an explanatory diagram that schematically shows changes in the display image when the display adjustment process in this embodiment is performed. In Figure 5, the upper row shows the display image C1 that is displayed on the display unit 21 when the vehicle VL is traveling straight at a constant speed, and the lower row shows C1 that is displayed on the display unit 21 when accelerating, decelerating, turning right, turning left, leaning forward, and leaning backward.

As a result of step S115 described above, the display image C1 is enlarged and displayed on the display unit 21. As a result, the display image C1 appears to enlarge and approach the occupant p1 in accordance with the bodily sensation of acceleration, and the information that the occupant p1 perceives through his or her eyes coincides with the information that he or she perceives through his or her eyes.

As a result of step S125 described above, the display image C1 is reduced and displayed on the display unit 21. As a result, the display image C1 reduces in size in accordance with the bodily sensation of deceleration, giving the occupant p1 the feeling that it is moving away from the occupant, and therefore the bodily sensation and the information obtained visually by the occupant p1 coincide.

As a result of step S135 described above, the display image C1 is displayed shifted to the left. Therefore, the display image C1 appears to move to the left in accordance with the bodily sensation of turning right, and therefore the bodily sensation and the visual information obtained by occupant p1 coincide.

As a result of step S145 described above, the display image C1 is displayed shifted to the right. Therefore, the display image C1 appears to move to the right in accordance with the bodily sensation of turning left, and therefore the bodily sensation and the information obtained visually by the occupant p1 coincide.

As a result of step S155 described above, the display image C1 is displayed moving downward. Therefore, the display image C1 appears to move downward in accordance with the bodily sensation of leaning forward, and the bodily sensation and the information obtained visually by the occupant p1 coincide.

As a result of step S165 described above, the display image C1 is displayed moving upward. Therefore, the display image C1 appears to move upward in accordance with the bodily sensation of leaning backward, and the bodily sensation and the visual information obtained by the occupant p1 coincide.

In this way, the display adjustment process ensures that the information occupant p1 experiences matches the information they see. This prevents occupant p1 from becoming motion sick when viewing the display image C1 in the vehicle VL.

According to the display system 100 of the first embodiment described above, the display adjustment unit 113 adjusts at least one of the size of the display image C1 displayed on the display unit 21 and the display position of the display image C1 on the display unit 21 in accordance with the operation of the vehicle VL indicated by the operation information, thereby adjusting at least one of the size and position of the display image C1 as seen by the occupant p1 of the vehicle VL. This makes it possible to match the bodily sensation of the operation of the vehicle VL with the information obtained visually when viewing the display image. This makes it possible to prevent occupant p1 from becoming sick when viewing the display image in the vehicle VL. Furthermore, since the display unit 21 does not display any graphics or the like to prevent sickness in addition to the display image, it is possible to reduce the annoyance felt by the occupant p1.

The control device 10 also has an action prediction unit 111 that identifies a predicted action from at least one of the route information 904 acquired from the navigation device 903, the action state detected by the state sensor 901, and the captured image obtained by the imaging device 902.The action information acquisition unit 112 acquires information indicating the predicted action identified by the action prediction unit 111 as action information, so that highly accurate actions can be predicted as predicted actions, and since such highly accurate predicted actions are used as action information, the occurrence of motion sickness can be more reliably suppressed.

In addition, at least one of the following is adjusted according to the movement of the moving object indicated by the movement information: enlarging the display image C1 when the movement of the vehicle VL is accelerating; reducing the display image C1 when the movement of the vehicle VL is decelerating; moving the display position of the display image C1 to the left when the movement of the vehicle VL is turning right; moving the display position of the display image C1 to the right when the movement of the vehicle VL is turning left; moving the display position of the display image C1 down when the movement of the vehicle VL is leaning forward; and moving the display position of the display image C1 up when the movement of the vehicle VL is leaning backward. This makes it possible to more closely match the bodily sensation of the movement of the vehicle VL with the information obtained visually when viewing the display image C1.

B. Second embodiment:
The display system 100 of the second embodiment has the same configuration as the display system 100 of the first embodiment, so the same components are denoted by the same reference numerals and detailed description thereof will be omitted.

Figures 6 and 7 are flowcharts showing the steps of the display adjustment process in the second embodiment. The display adjustment process in the second embodiment differs from the display adjustment process of the first embodiment shown in Figure 4 in that steps S112, S122, S132, S142, S152, and S162 are additionally executed. The other steps in the display adjustment process in the second embodiment are the same as those in the first embodiment, so identical steps are denoted by the same reference numerals and detailed descriptions thereof are omitted.

As shown in Figures 6 and 7, if the predicted action is determined to be "acceleration" (step S110: YES), before executing step S115, the display adjustment unit 113 adjusts the magnification ratio of the display image C1 according to the magnitude of the acceleration of the vehicle VL (step S112). Specifically, the magnification ratio is adjusted to be larger the greater the acceleration. Note that the relationship between acceleration and magnification ratio in this case is not limited to a linear proportional relationship, and may also be an exponential relationship or a stepwise relationship. After step S112 is completed, the above-mentioned step S115 is executed. Therefore, in step S115, the display image C1 is displayed on the display unit 21 at a magnification ratio adjusted according to the acceleration.

If the predicted action is determined to be "deceleration" (step S120: YES), before executing step S125, the display adjustment unit 113 adjusts the reduction rate of the display image C1 according to the magnitude of the deceleration of the vehicle VL (step S122). Specifically, the greater the deceleration, the greater the deceleration rate is adjusted. Note that the relationship between deceleration and reduction rate in this case is not limited to a linear proportional relationship, but may also be an exponential relationship or a stepwise relationship. After step S122 is completed, the above-mentioned step S125 is executed. Therefore, in step S125, the display image C1 is displayed on the display unit 21 at a reduction rate adjusted according to the acceleration.

If it is determined that the predicted action is "turn right" (step S130: YES), before executing step S135, the display adjustment unit 113 adjusts the amount of movement of the display position of the display image C1 according to the moving speed of the vehicle VL when turning right (step S132). Specifically, the greater the moving speed when turning right, the greater the amount of movement of the display position is adjusted. Note that in this case, the relationship between the moving speed of the vehicle VL and the amount of movement of the display position is not limited to a linear proportional relationship, but may also be an exponential relationship or a stepwise relationship. After step S132 is completed, the above-mentioned step S135 is executed. Therefore, in step S135, the display image C1 is moved to the left by the amount of movement adjusted according to the moving speed of the vehicle VL and displayed on the display unit 21.

If it is determined that the predicted action is "turn left" (step S140: YES), before executing step S145, the display adjustment unit 113 adjusts the amount of movement of the display position of the display image C1 according to the moving speed of the vehicle VL when turning left (step S142). Specifically, the greater the moving speed when turning left, the greater the amount of movement of the display position is adjusted. Note that in this case, the relationship between the moving speed of the vehicle VL and the amount of movement of the display position is not limited to a linear proportional relationship, but may also be an exponential relationship or a stepwise relationship. After step S142 is completed, the above-mentioned step S145 is executed. Therefore, in step S145, the display image C1 is moved to the right by the amount of movement adjusted according to the moving speed of the vehicle VL and displayed on the display unit 21.

If the predicted motion is determined to be "forward tilt" (step S150: YES), before executing step S155, the display adjustment unit 113 adjusts the amount of movement of the display position of the display image C1 according to the angle of forward tilt of the vehicle VL (step S152). Specifically, the greater the angle of forward tilt, the greater the amount of movement of the display position. Note that the relationship between the angle of forward tilt and the amount of movement of the display position in this case is not limited to a linear proportional relationship, but may also be an exponential relationship or a stepwise relationship. After step S152 is completed, the above-mentioned step S155 is executed. Therefore, in step S155, the display image C1 is moved downward by the amount adjusted according to the angle of forward tilt and displayed on the display unit 21.

If the predicted motion is determined to be "tilt backward" (step S160: YES), before executing step S165, the display adjustment unit 113 adjusts the amount of movement of the display position of the display image C1 according to the angle of tilt backward of the vehicle VL (step S162). Specifically, the greater the angle of tilt backward, the greater the amount of movement of the display position. Note that the relationship between the angle of tilt backward and the amount of movement of the display position in this case is not limited to a linear proportional relationship, but may also be an exponential relationship or a stepwise relationship. After step S162 is completed, the above-mentioned step S165 is executed. Therefore, in step S165, the display image C1 is moved upward by the amount adjusted according to the angle of tilt backward, and is displayed on the display unit 21.

The display system 100 of the second embodiment described above has the same effects as the display system 100 of the first embodiment. In addition, it performs at least one of the following: adjusting the magnification rate of the display image C1 in accordance with the magnitude of the acceleration of the vehicle VL; adjusting the reduction rate of the display image C1 in accordance with the magnitude of the deceleration of the vehicle VL; adjusting the speed at which the display position moves to the left in accordance with the speed at which the vehicle VL is moving when turning right; adjusting the speed at which the display position moves to the right in accordance with the speed at which the vehicle VL is moving when turning left; adjusting the amount of downward movement of the display position in accordance with the angle at which the vehicle VL is leaning forward; and adjusting the amount of upward movement of the display position in accordance with the angle at which the vehicle VL is leaning backward. This makes it possible to more closely match the bodily sensation of the vehicle VL's operation with the information obtained visually when viewing the display image.

C. Third embodiment:
The display system 100 of the third embodiment has the same configuration as the display system 100 of the first embodiment, so the same components are denoted by the same reference numerals and detailed description thereof will be omitted.

Figure 8 is a flowchart showing the steps of the display adjustment process in the third embodiment. The display adjustment process in the third embodiment differs from the display adjustment process of the first embodiment shown in Figure 4 in that steps S215, S225, S235, S245, S255, and S265 are executed instead of steps S115, S125, S135, S145, S155, and S165. The other steps in the display adjustment process in the third embodiment are the same as those in the first embodiment, so the same steps are denoted by the same reference numerals and detailed descriptions thereof are omitted.

As shown in FIG. 8, if the predicted action is determined to be "acceleration" (step S110: YES), the display adjustment unit 113 controls the position adjustment device 30 to adjust the position of the display device 20, thereby bringing the display unit 21 closer to the occupant p1 in a direction parallel to the traveling direction of the vehicle VL (the longitudinal direction of the vehicle VL) (step S215). In this embodiment, the approach speed of the display unit 21 in step S215 is a predetermined value.

If the predicted action is determined to be "deceleration" (step S120: YES), the display adjustment unit 113 controls the position adjustment device 30 to adjust the position of the display device 20, thereby moving the display unit 21 away from the occupant p1 in a direction parallel to the traveling direction of the vehicle VL (the longitudinal direction of the vehicle VL) (step S225). In this embodiment, the moving-away speed of the display unit 21 in step S225 is a predetermined value.

If it is determined that the predicted action is "turn right" (step S130: YES), the display adjustment unit 113 controls the position adjustment device 30 to adjust the position of the display device 20, thereby moving the display unit 21 to the left (step S235). In this embodiment, the amount of movement of the display unit 21 in step S235 is a predetermined value.

If the predicted action is determined to be "turn left" (step S140: YES), the display adjustment unit 113 controls the position adjustment device 30 to adjust the position of the display device 20, thereby moving the display unit 21 to the right (step S245). In this embodiment, the amount of movement of the display unit 21 in step S245 is a predetermined value.

If the predicted movement is determined to be "leaning forward" (step S150: YES), the display adjustment unit 113 controls the position adjustment device 30 to adjust the position of the display device 20, thereby moving the display unit 21 downward (step S255). In this embodiment, the amount of movement of the display unit 21 in step S255 is a predetermined value.

If the predicted movement is determined to be "tilting backward" (step S160: YES), the display adjustment unit 113 controls the position adjustment device 30 to adjust the position of the display device 20, thereby moving the display unit 21 upward (step S265). In this embodiment, the amount of movement of the display unit 21 in step S265 is a predetermined value.

Figure 9 is an explanatory diagram that schematically shows the changes in the display device 20 and the display image C1 when the display adjustment process in the third embodiment is performed. In Figure 9, the upper row shows the display image C1 displayed on the display unit 21 when the vehicle VL is traveling straight at a constant speed, and the middle and lower rows show C1 displayed on the display unit 21 during each of the following actions: accelerating, decelerating, turning right, turning left, leaning forward, and leaning backward.

As a result of step S215 described above, the display device 20 moves closer to the occupant p1. As a result, the display image C1 as seen by the occupant p1 expands. As a result, the display image C1 appears to expand in accordance with the bodily sensation of acceleration, and the bodily sensation and the information obtained visually by the occupant p1 coincide.

As a result of step S225 described above, the display device 20 moves away from the occupant p1. As a result, the display image C1 seen by the occupant p1 shrinks. As a result, the display image C1 appears to shrink in accordance with the bodily sensation of deceleration, and the bodily sensation and the information obtained visually by the occupant p1 coincide.

As a result of step S235 described above, the display device 20 moves to the left. Therefore, the display image C1 seen by occupant p1 moves to the left. As a result, occupant p1 feels as if the display image C1 is moving to the left in accordance with the bodily sensation of turning right, and therefore, the bodily sensation and the information obtained visually by occupant p1 coincide.

As a result of step S245 described above, the display device 20 moves to the right. Therefore, the display image C1 seen by occupant p1 moves to the right. As a result, occupant p1 feels as if the display image C1 is moving to the right in line with the bodily sensation of turning left, and therefore, the bodily sensation and the information obtained visually by occupant p1 coincide.

As a result of step S255 described above, the display device 20 moves downward. As a result, the display image C1 seen by occupant p1 moves downward. As a result, occupant p1 feels as if the display image C1 is moving downward in accordance with the bodily sensation of leaning forward, and therefore, the bodily sensation and the information obtained visually by occupant p1 coincide.

As a result of step S265 described above, the display device 20 moves upward. As a result, the display image C1 seen by occupant p1 moves upward. As a result, occupant p1 feels as if the display image C1 is moving upward in accordance with the bodily sensation of leaning forward, and therefore, the bodily sensation and the information obtained visually by occupant p1 coincide.

The display system 100 of the third embodiment described above has the same effects as the display system 100 of the first embodiment. In addition, at least one of the following is adjusted in accordance with the operation of the vehicle VL indicated by the operation information: moving the display unit 21 closer to the occupant p1 in a direction parallel to the traveling direction of the vehicle VL when the vehicle VL is accelerating; moving the display unit 21 away from the occupant p1 in a direction parallel to the traveling direction of the moving body when the vehicle VL is decelerating; moving the display unit 21 to the left when the vehicle VL is turning right; moving the display unit 21 to the right when the vehicle VL is turning left; moving the display unit 21 downward when the vehicle VL is leaning forward; and moving the display unit 21 upward when the vehicle VL is leaning backward. This makes it possible to more closely match the bodily sensation of the operation of the vehicle VL with the information obtained visually when viewing the display image C1.

D. Fourth embodiment:
The display system 100 of the fourth embodiment has the same configuration as the display system 100 of the first embodiment, so the same components are denoted by the same reference numerals and detailed description thereof will be omitted.

Figure 10 is a flowchart showing the steps of the display adjustment process in the fourth embodiment. The display adjustment process in the fourth embodiment differs from the display adjustment process of the third embodiment shown in Figure 8 in that steps S212, S222, S232, S242, S252, and S262 are additionally executed. The other steps in the display adjustment process of the fourth embodiment are the same as those in the third embodiment, so the same steps are given the same reference numerals and detailed descriptions thereof are omitted. Note that the steps preceding the steps shown in Figure 10 are the same as those in the second embodiment shown in Figure 6, and therefore are not shown.

As shown in Figures 6 and 10, if the predicted action is determined to be "acceleration" (step S110: YES), before executing step S215, the display adjustment unit 113 adjusts the approach speed of the display unit 21 according to the magnitude of the acceleration of the vehicle VL (step S212). Specifically, the greater the acceleration, the greater the approach speed is adjusted to be. Note that the relationship between acceleration and approach speed in this case is not limited to a linear proportional relationship, and may also be an exponential relationship or a stepwise relationship. After step S212 is completed, the above-mentioned step S215 is executed. Therefore, in step S215, the display unit 21 approaches the occupant p1 at an approach speed adjusted according to the acceleration.

If the predicted action is determined to be "deceleration" (step S120: YES), before executing step S225, the display adjustment unit 113 adjusts the moving away speed of the display unit 21 according to the magnitude of the deceleration of the vehicle VL (step S222). Specifically, the greater the deceleration, the greater the moving away speed is adjusted. Note that the relationship between deceleration and moving away speed in this case is not limited to a linear proportional relationship, but may also be an exponential relationship or a stepwise relationship. After completing step S222, the above-mentioned step S225 is executed. Therefore, in step S125, the display unit 21 moves away from the occupant p1 at an approaching speed adjusted according to the magnitude of the deceleration.

If it is determined that the predicted action is "turn right" (step S130: YES), before executing step S235, the display adjustment unit 113 adjusts the amount of left movement of the display unit 21 according to the moving speed of the vehicle VL when turning right (step S232). Specifically, the greater the moving speed when turning right, the greater the amount of movement of the display unit 21 is adjusted. Note that in this case, the relationship between the moving speed of the vehicle VL and the amount of movement of the display unit 21 is not limited to a linear proportional relationship, but may also be an exponential relationship or a stepwise relationship. After step S232 is completed, the above-mentioned step S235 is executed. Therefore, in step S235, the display unit 21 moves left by an amount adjusted according to the moving speed of the vehicle VL.

If it is determined that the predicted action is "turn left" (step S140: YES), before executing step S245, the display adjustment unit 113 adjusts the amount of rightward movement of the display unit 21 according to the moving speed of the vehicle VL when turning left (step S242). Specifically, the greater the moving speed when turning left, the greater the amount of movement of the display unit 21 is adjusted. Note that in this case, the relationship between the moving speed of the vehicle VL and the amount of movement of the display unit 21 is not limited to a linear proportional relationship, but may also be an exponential relationship or a stepwise relationship. After step S242 is completed, the above-mentioned step S245 is executed. Therefore, in step S245, the display unit 21 moves to the right by an amount adjusted according to the moving speed of the vehicle VL.

If the predicted movement is determined to be "leaning forward" (step S150: YES), before executing step S255, the display adjustment unit 113 adjusts the amount of downward movement of the display unit 21 according to the angle of forward lean (step S252). Specifically, the greater the angle of forward lean, the greater the amount of movement of the display unit 21 is adjusted. Note that in this case, the relationship between the angle of forward lean and the amount of movement of the display unit 21 is not limited to a linear proportional relationship, but may also be an exponential relationship or a stepwise relationship. After step S252 is completed, the above-mentioned step S255 is executed. Therefore, in step S255, the display unit 21 moves downward by an amount adjusted according to the angle of forward lean.

If the predicted action is determined to be "tilt backward" (step S160: YES), before executing step S265, the display adjustment unit 113 adjusts the amount of upward movement of the display unit 21 according to the angle of tilt backward (step S262). Specifically, the greater the angle of tilt backward, the greater the amount of movement of the display unit 21 is adjusted. Note that in this case, the relationship between the angle of tilt backward and the amount of movement of the display unit 21 is not limited to a linear proportional relationship, but may also be an exponential relationship or a stepwise relationship. After step S262 is completed, the above-mentioned step S265 is executed. Therefore, in step S265, the display unit 21 moves upward by an amount adjusted according to the angle of tilt backward.

The display system 100 of the fourth embodiment described above has the same effects as the display systems 100 of the first and third embodiments. In addition, it performs at least one of the following: adjusting the approach speed of the display unit 21 in accordance with the magnitude of the acceleration of the vehicle VL; adjusting the receding speed of the display unit 21 in accordance with the magnitude of the deceleration of the vehicle VL; adjusting the leftward movement speed of the display unit 21 in accordance with the movement speed of the vehicle VL when turning right; adjusting the rightward movement speed of the display unit 21 in accordance with the movement speed of the vehicle VL when turning left; adjusting the downward movement amount of the display unit 21 in accordance with the forward tilt angle of the vehicle VL; and adjusting the upward movement amount of the display unit 21 in accordance with the backward tilt angle of the vehicle VL. This makes it possible to more closely match the bodily sensation of the vehicle VL's operation with the information obtained visually when viewing the display image C1.

E. Other Embodiments:
(E1) In step S100 of the display adjustment process in each embodiment, the motion information acquisition unit 112 acquires motion information regarding a predicted motion. However, instead of the predicted motion, motion information regarding a real motion may be acquired. Then, in step S105, a real motion may be identified instead of the predicted motion, and steps S110 to S265 may be executed based on the real motion. "Real motion" refers to the actual motion (current motion) of the vehicle VL. For example, if the real motion is determined to be "the vehicle VL is turning right" based on motion information including captured images and detection information from an acceleration sensor, steps S135 and S235 described above may be executed, and the display position of the display image C1 and the position of the display unit 21 may be moved to the left. Even with this configuration, the same effects as those of each embodiment can be achieved. It is noted that motion information regarding a predicted motion and motion information regarding a real motion may be used in combination. For example, if the motion indicated by both pieces of motion information is recognized as "acceleration," step S115 or S215 may be executed, and if the motion indicated by at least one piece of motion information is not "acceleration," the process may return to step S100 without executing steps S115 to S165 or S215 to S265.

(E2) In each embodiment, the operation prediction unit 111 identifies a predicted operation from at least one of the route information 904 acquired from the navigation device 903, the operation state detected by the status sensor 901, and the captured image obtained by the imaging device 902. Here, the operation prediction unit 111 may be configured to identify a predicted operation based only on the route information 904, and the status sensor 901 and the imaging device 902 may be omitted. Similarly, the navigation device 903 and the status sensor 901 may be omitted, and the predicted operation may be identified based only on the captured image obtained by the imaging device 902. Similarly, the imaging device 902 and the navigation device 903 may be omitted, and the predicted operation may be identified based only on the operation state detected by the status sensor 901.

(E3) In each embodiment, the predicted action of the vehicle VL was identified as one of acceleration, deceleration, turning right, turning left, leaning forward, and leaning backward. However, the present disclosure is not limited to this. The predicted action may be identified from an action group that omits one or more of acceleration, deceleration, turning right, turning left, leaning forward, and leaning backward. In this case, in the first and second embodiments, only the size or display position of the display image C1 may be adjusted. Furthermore, in the third and fourth embodiments, the movement direction of the display unit 21 may be adjusted only in the forward and backward directions or in the up, down, left, and right directions. Furthermore, a combination of two or more of acceleration, deceleration, turning right, turning left, leaning forward, and leaning backward may be identified as the predicted action. For example, a combination of "deceleration" and "right turn" may be identified as the predicted action. In such an example, for example, the display image C1 may be reduced in size and the display position of the display image C1 on the display unit 21 may be moved to the left.

(E4) The embodiments may be combined. For example, the first and third embodiments may be combined, and if the predicted operation is "acceleration," step S115 may be executed to enlarge the display image C1, and step S215 may be executed to move the display unit 21 closer to the occupant. Similarly, at least one of the following may be adopted: executing steps S125 and S225 together; executing steps S135 and S235 together; executing steps S145 and S245 together; executing steps S155 and S255 together; or executing steps S165 and S265 together.

(E5) In the third and fourth embodiments, the position of the display device 20 (display unit 21) was adjusted, but instead of or in addition to the position of the display device 20 (display unit 21), the position of the seat DRS may be adjusted. In such a configuration, the seat DRS is configured to be movable not only forward and backward, but also up, down, left, and right.

(E6) The display system 100 in each embodiment is merely an example and can be modified in various ways. For example, in each embodiment, the steering device 800 in the vehicle VL can be housed in the storage space SP, but it may not be housed in the storage space SP and may always be exposed to the driver's seat. Furthermore, in the first and second embodiments, the display device 20 may be fixed to the instrument panel, the ceiling of the passenger compartment CA, or the like and not move. Furthermore, in any driving situation, the vertical position of the display device 20 may be aligned with the line of sight of the occupant p1 or positioned above that line of sight. In this configuration, for example, the face of the occupant p1 may be captured by the camera 24, and the direction of the line of sight may be determined from the captured image. This configuration can prevent the occupant p1 from looking downward and becoming more susceptible to motion sickness. In a configuration in which the vehicle VL has multiple occupants and only one display device 20, the line of sight of each person may be identified, and the position of the display device 20 may be adjusted based on the average vertical position, the highest position, the lowest position, etc. Furthermore, instead of or in addition to the display device 20, an image may be displayed on the inside of the windshield.

The present disclosure is not limited to the above-described embodiments, and can be realized in various configurations without departing from the spirit of the present disclosure. For example, the technical features in each embodiment that correspond to the technical features in the aspects described in the Summary of the Invention section can be replaced or combined as appropriate to solve some or all of the above-described problems or achieve some or all of the above-described effects. Furthermore, if a technical feature is not described as essential in this specification, it can be deleted as appropriate.

1...vehicle, 10...control device, 11...CPU, 12...wireless communication device, 13...ROM, 14...RAM, 15...internal bus, 20...display device, 21...display unit, 22...microphone, 23...speaker, 24...camera, 30...position adjustment device, 100...display system, 111...movement prediction unit, 112...movement information acquisition unit, 113...display adjustment unit, 321...first arm, 322...first joint, 323...second arm, 32 4...second joint, 325...third arm, 326...third joint, 327...fourth arm, 328...fourth joint, 700...dashboard, 703...opening, 800...steering device, 901...status sensor, 902...imaging device, 903...navigation device, 904...route information, C1...display image, CA...cabinet, DRS...seat, FR...front passenger compartment, SP...storage space, VL...vehicle, p1...occupant

Claims (9)

A display system mounted on a moving body,
a display device having a display unit capable of displaying an image;
A control device that controls the display device,
a motion information acquisition unit that acquires motion information indicating at least one of a predicted motion of the moving object and an actual motion that is an actual motion of the moving object;
a control device having a display adjustment unit that adjusts at least one of the size and position of the display image displayed on the display unit and the display position of the display unit, in accordance with the operation of the moving body indicated by the operation information, thereby adjusting at least one of the size and position of the display image as seen by an occupant of the moving body;
Equipped with
the display unit is disposed in the moving body in a traveling direction of the moving body as seen from the occupant,
The display adjustment unit
(e1) moving the display position downward when the motion of the moving object indicated by the motion information is leaning forward;
(f1) moving the display position upward when the motion of the moving object indicated by the motion information is tilting backward;
and adjusting at least one of the above in accordance with the motion of the moving object indicated by the motion information . A display system mounted on a moving body,
a display device having a display unit capable of displaying an image;
A control device that controls the display device,
a motion information acquisition unit that acquires motion information indicating at least one of a predicted motion of the moving object and an actual motion that is an actual motion of the moving object;
a control device having a display adjustment unit that adjusts at least one of the size and position of the display image displayed on the display unit and the display position of the display unit, in accordance with the operation of the moving body indicated by the operation information, thereby adjusting at least one of the size and position of the display image as seen by an occupant of the moving body;
Equipped with
the display unit is disposed in the moving body in a traveling direction of the moving body as seen from the occupant,
The display adjustment unit
(a3) when the motion of the moving object indicated by the motion information is acceleration, bringing the display unit closer to the occupant in a direction parallel to the traveling direction of the moving object;
(b3) when the motion information indicates deceleration of the moving object, moving the display unit away from the occupant in a direction parallel to the traveling direction of the moving object;
(c3) moving the display unit to the left when the motion of the moving object indicated by the motion information is to turn right;
(d3) moving the display unit to the right when the motion of the moving object indicated by the motion information is to turn left;
and adjusting at least one of the above in accordance with the motion of the moving object indicated by the motion information;
The display adjustment unit
(a4) adjusting the approach speed of the display unit in accordance with the magnitude of the acceleration of the moving object;
(b4) adjusting the moving away speed of the display image in accordance with the magnitude of the deceleration of the moving object;
(c4) adjusting the speed at which the display unit moves to the left in accordance with the speed at which the moving object turns right;
(d4) adjusting the speed at which the display unit moves to the right in accordance with the speed at which the moving object turns left;
A display system that performs at least one of the following : 3. The display system according to claim 1,
a position adjustment device connected to the display device and configured to adjust the position of the display device within the moving object;
The display adjustment unit controls the position adjustment device to adjust the position of the display device within the vehicle, thereby displacing the position of the display unit and adjusting at least one of the size and position of the display image as seen by the occupant. 3. The display system according to claim 1,
the moving body has at least one of a navigation device having set route information, a state sensor that detects a current operating state of the moving body, and an imaging device that captures an image of the surroundings of the moving body;
the control device further includes an action prediction unit that identifies the predicted action from at least one of route information acquired from the navigation device, the action state detected by the state sensor, and an image acquired by the imaging device;
The motion information acquisition unit acquires, as the motion information, information indicating the predicted motion identified by the motion prediction unit. 3. The display system according to claim 1,
the moving body has a state sensor that detects a current operating state of the moving body;
The motion information acquisition unit acquires information indicating the motion state detected by the state sensor as the motion information indicating the actual motion. 3. The display system according to claim 1 ,
The display adjustment unit
(a1) enlarging the display image when the motion of the moving object indicated by the motion information is acceleration;
(b1) reducing the display image when the motion of the moving object indicated by the motion information is deceleration;
(c1) moving the display position to the left when the motion of the moving object indicated by the motion information is to turn right;
(d1) moving the display position to the right when the motion of the moving object indicated by the motion information is to turn left ;
and adjusting at least one of the above in accordance with the motion of the moving object indicated by the motion information. 2. The display system of claim 1 ,
The display adjustment unit
(a2) adjusting the magnification of the display image in accordance with the magnitude of the acceleration of the moving object;
(b2) adjusting a reduction ratio of the display image in accordance with the magnitude of deceleration of the moving object;
(c2) adjusting the speed at which the display position moves to the left in accordance with the speed at which the moving object turns right;
(d2) adjusting the speed at which the display position moves to the right in accordance with the speed at which the moving object turns left;
(e2) adjusting the downward movement amount of the display position in accordance with the angle of forward tilt of the moving body;
(f2) adjusting the amount of upward movement of the display position in accordance with the angle of backward tilt of the moving body;
A display system that performs at least one of the following: 3. The display system according to claim 1 ,
The display adjustment unit
( e3) moving the display unit downward when the motion of the moving object indicated by the motion information is tilting forward;
(f3) moving the display unit upward when the motion of the moving object indicated by the motion information is tilting backward; and
and adjusting at least one of the above in accordance with the motion of the moving object indicated by the motion information. 9. The display system of claim 8,
The display adjustment unit
( e4) adjusting the downward movement amount of the display unit according to the angle of forward tilt of the moving body;
(f4) adjusting the amount of upward movement of the display unit in accordance with the angle of backward tilt of the moving body;
A display system that performs at least one of the following: