On-vehicle display device, method, and program

Abstract

To prevent an occupant from feeling annoyed about a display.SOLUTION: A meter display (MET) 58 and a head-up display (HUD) 56 are provided in a cabin of an own vehicle so as to be capable of being viewed by an occupant. An acquisition section acquires information on surrounding targets present around the own vehicle. In images of the surrounding targets on which the information has been acquired by the acquisition section, a control section causes a lane in which the own vehicle is traveling to be displayed on the MET 58, together with an image showing the own vehicle. When the own vehicle is traveling on a curve, the control section causes the lane to be displayed while being bent on the HUD 56. On the MET 58, the control section causes the lane to be displayed as a straight line around the image showing the own vehicle and to be displayed while being bent in front of the image showing the own vehicle.SELECTED DRAWING: Figure 6

Description

Technical Field

[0001] The present disclosure relates to an in-vehicle display device, an in-vehicle display method, and an in-vehicle display program.

Background Art

[0002] Patent Document 1 describes a technique of superimposing an image imitating another vehicle recognized as an object on an image imitating the road on which the host vehicle exists and displaying the image on a display unit, and highlighting an image imitating a vehicle that affects the behavior of the host vehicle.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Patent Document 1 does not describe the display when the road on which the host vehicle is traveling is curved. In order for the passenger to recognize that the image displayed on the display unit is an image imitating the actual scene, when the road on which the host vehicle is traveling is curved, it is preferable to display the lane to be displayed on the display unit bent in accordance with the road. However, when an image showing the host vehicle is displayed on the display unit, although it is less uncomfortable for the passenger to display the image showing the host vehicle in a state facing forward (upward) (straight-ahead state), bending only the lane in that state may give the passenger a sense of discomfort.

[0005] The present disclosure has been made in consideration of the above facts, and an object of the present disclosure is to obtain an in-vehicle display device, an in-vehicle display method, and an in-vehicle display program that can suppress giving a sense of discomfort to a passenger when bending a lane in a display unit that displays an image showing the host vehicle.

Means for Solving the Problems

[0006] The in-vehicle display device according to the first aspect includes a first display unit provided in the passenger compartment of the host vehicle and visible to the occupant, a second display unit provided in the passenger compartment of the host vehicle and visible to the occupant, an acquisition unit that acquires information about surrounding objects existing around the host vehicle, and among the images of the surrounding objects for which the information has been acquired by the acquisition unit, the lane in which the host vehicle is traveling is displayed on the first display unit together with an image indicating the host vehicle, and when the host vehicle is traveling on a curve, the lane is displayed bent on the second display unit, and on the first display unit, it is displayed straight around the image indicating the host vehicle and bent on the front side of the image indicating the host vehicle, and a control unit that An in-vehicle display device including

[0007] In the first aspect, when the host vehicle is traveling on a curve, the lane in which the host vehicle is traveling and is displayed together with an image indicating the host vehicle is displayed bent on the second display unit, and on the first display unit the periphery of the image indicating the host vehicle is displayed straight, and the front side of the image indicating the host vehicle is displayed bent. Thereby, even when the image indicating the host vehicle is displayed in a straight-ahead state in the display unit that displays the image indicating the host vehicle, it is possible to suppress giving a sense of discomfort to the occupant when the lane is displayed bent.

[0008] According to a second aspect, in the first aspect, the first display unit is the meter display of the host vehicle, and the second display unit is the head-up display of the host vehicle.

[0009] According to the second aspect, when the occupant of the host vehicle views the front outside the vehicle, a display in which images of surrounding objects other than the first leading vehicle are suppressed can be seen from the second display unit (HUD: Head-Up Display). Therefore, it is possible to quickly make the occupant recognize information about surrounding objects while reducing annoyance.

[0010] In the third aspect, in the first aspect or the second aspect, the display area of the first display unit is larger than that of the second display unit, and the second display unit uses the lower part of the foreground when the occupant of the host vehicle visually recognizes the front outside the vehicle as the display area.

[0011] According to the third aspect, it is possible to effectively utilize the display areas of the first display unit and the second display unit to enable the occupant to recognize information about surrounding targets.

[0012] The in-vehicle display method according to the fourth aspect acquires information about surrounding targets existing around the host vehicle, and among the images of the surrounding targets for which the information has been acquired, the lane in which the host vehicle is traveling is displayed on a first display unit provided in the vehicle interior of the host vehicle and visible to the occupant together with an image indicating the host vehicle. When the host vehicle is traveling on a curve, the lane is displayed in a bent manner on a second display unit provided in the vehicle interior of the host vehicle and visible to the occupant, and is displayed in a straight line around the image indicating the host vehicle on the first display unit, and is displayed in a bent manner on the front side of the image indicating the host vehicle, and causes a computer to execute a process including this.

[0013] According to the fourth aspect, similar to the first aspect, when the lane is displayed in a bent manner on the display unit that displays the image indicating the host vehicle, it is possible to suppress giving a sense of discomfort to the occupant.

[0014] The in-vehicle display program according to the fifth aspect causes a computer to acquire information about surrounding targets existing around the host vehicle, and among the images of the surrounding targets for which the information has been acquired, the lane in which the host vehicle is traveling is displayed on a first display unit provided in the vehicle interior of the host vehicle and visible to the occupant together with an image indicating the host vehicle. When the host vehicle is traveling on a curve, the lane is displayed in a bent manner on a second display unit provided in the vehicle interior of the host vehicle and visible to the occupant, and is displayed in a straight line around the image indicating the host vehicle on the first display unit, and is displayed in a bent manner on the front side of the image indicating the host vehicle, and executes a process including this.

[0015] According to the fifth aspect, similar to the first aspect, in the display unit that displays an image indicating the host vehicle, when the lane is displayed in a curved manner, it is possible to suppress giving a sense of discomfort to the occupant.

Advantages of the Invention

[0016] The present disclosure has an effect of being able to suppress giving a sense of discomfort to the occupant when the lane is displayed in a curved manner in the display unit that displays an image indicating the host vehicle.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5A

Figure 5B

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Best Mode for Carrying Out the Invention

[0018] Hereinafter, an example of an embodiment of the present disclosure will be described in detail with reference to the drawings. The in-vehicle system 10 shown in FIG. 1 includes a communication bus 12, and a peripheral situation acquisition device group 14, a vehicle running state detection sensor group 26, an automatic driving ECU (Electronic Control Unit) 34, and a display control ECU 42 are respectively connected to the communication bus 12. Note that FIG. 1 shows only a part of the in-vehicle system 10. Hereinafter, the vehicle equipped with the in-vehicle system 10 is referred to as the host vehicle.

[0019] The peripheral situation acquisition device group 14 includes a GPS (Global Positioning System) device 16, an in-vehicle communicator 18, a navigation system 20, a radar device 22, a camera 24, etc. as devices for acquiring information indicating the situation of the surrounding environment of the host vehicle.

[0020] The GPS device 16 receives GPS signals from a plurality of GPS satellites to measure the position of the host vehicle. The positioning accuracy of the GPS device 16 improves as the number of receivable GPS signals increases. The in-vehicle communicator 18 is a communication device that performs at least one of vehicle-to-vehicle communication with other vehicles and road-to-vehicle communication with roadside units. The navigation system 20 includes a map information storage unit 20A that stores map information, and based on the position information obtained from the GPS device 16 and the map information stored in the map information storage unit 20A, performs processing such as displaying the position of the host vehicle on the map and guiding the route to the destination.

[0021] The radar device 22 includes a plurality of radar devices with different detection ranges, detects objects such as pedestrians and other vehicles existing around the host vehicle as point cloud information, and acquires the relative position and relative speed of the detected objects and the host vehicle. Further, the radar device 22 incorporates a processing device that processes the detection results of surrounding objects. Based on changes in the relative position and relative speed with respect to individual objects included in the detection results of the most recent multiple times, the processing device excludes roadside objects such as noise and guardrails from the monitoring targets, and performs follow-up monitoring of specific objects such as pedestrians and other vehicles as surrounding targets. Then, the radar device 22 outputs information such as the relative position and relative speed with respect to individual surrounding targets. The camera 24 captures the surroundings of the host vehicle with a plurality of cameras and outputs the captured images.

[0022] In addition, the vehicle driving state detection sensor group 26 includes, as a plurality of sensors that acquire the driving state of the vehicle, a steering angle sensor 28 that detects the steering angle of the host vehicle, a vehicle speed sensor 30 that detects the driving speed of the host vehicle, and an acceleration sensor 32 that detects the acceleration applied to the host vehicle.

[0023] The automatic driving ECU 34 is connected to a throttle ACT (Actuator) 36 that changes the throttle opening of the host vehicle and a brake ACT 38 that changes the braking force generated by the braking device of the host vehicle. Further, the automatic driving ECU 34 is connected to a steering ACT 40 that changes the steering amount by the steering device of the host vehicle.

[0024] The automatic driving ECU 34 includes a CPU (Central Processing Unit), memories such as a ROM (Read Only Memory) and a RAM (Random Access Memory), a non-volatile storage unit such as an HDD (Hard Disk Drive) and an SSD (Solid State Drive), and a communication I / F (Inter Face). The storage unit stores the automatic driving software. When the automatic driving mode is selected by the CPU executing the automatic driving software, the automatic driving ECU 34 performs an automatic driving process to automatically drive the host vehicle without a driving operation by the occupant of the host vehicle. The automatic driving process is a process of determining the situation of the host vehicle and its surroundings based on the information obtained from the surrounding situation acquisition device group 14 and the vehicle driving state detection sensor group 26, and controlling the throttle ACT 36, the brake ACT 38, and the steering ACT 40.

[0025] Specifically, the automatic driving ECU 34 acquires information such as information on surrounding targets existing around the host vehicle from the surrounding situation acquisition device group 14 including the radar device 22. Then, based on the situation of the host vehicle and its surroundings represented by the acquired information, it determines whether an event is occurring in the driving of the host vehicle. Examples of the event here include, for example, lane merging, lane change, passing through an intersection, and intrusion of a preceding vehicle. The presence or absence and type of the event are output to the display control ECU 42 as surrounding situation information.

[0026] In addition, the automatic driving ECU 34 evaluates, for each individual surrounding target existing around the host vehicle, the magnitude of the impact of the existence of the individual surrounding target on the automatic driving as the importance based on the relative position, relative speed, etc. of the surrounding targets represented by the information acquired from the radar device 22, etc. For example, when there is no event, the automatic driving ECU 34 sets the importance for each individual surrounding target so that the importance of the surrounding target increases as the distance between the host vehicle and the surrounding target decreases when a surrounding target exists around the host vehicle. Also, when there is a first preceding vehicle traveling ahead of the lane in which the host vehicle is traveling around the host vehicle, the importance of the first preceding vehicle is set to the maximum.

[0027] Also, for example, when a second leading vehicle that is traveling in a lane other than the lane in which the host vehicle is traveling changes lanes into the lane in which the host vehicle is traveling, the automatic driving ECU 34 sets the importance level of the second leading vehicle to be higher than the importance levels of other surrounding objects. Also, for other objects, the importance level is set so that the importance level of the surrounding object increases as the distance between the host vehicle and the surrounding object decreases.

[0028] Also, for example, when an event occurs in which the host vehicle changes lanes from a first lane in which the host vehicle is traveling to a second lane other than the first lane, the automatic driving ECU 34 evaluates the importance levels of a first leading vehicle traveling in the first lane and a second leading vehicle traveling in the second lane to be higher than the importance levels of other surrounding objects. Also, for other objects, the importance level is set so that the importance level of the surrounding object increases as the distance between the host vehicle and the surrounding object decreases. Information representing the importance level for each individual surrounding object is output to the display control ECU 42 as surrounding object information together with information representing the relative position, relative speed, etc. of each individual surrounding object.

[0029] Note that in the present embodiment, the level of the automatic driving performed by the automatic driving ECU 34 is level 2 or level 3. In level 2 or level 3 automatic driving, the occupant is required to monitor the automatic driving by the automatic driving ECU 34 and intervene as necessary in case of, for example, deviating from the controllable range, improper operation due to false detection, non-detection, or failure of sensors.

[0030] The display control ECU 42 includes a CPU 44, a memory 46 such as a ROM and a RAM, a non-volatile storage unit 48 such as an HDD and an SSD, and a communication I / F 50. The CPU 44, the memory 46, the storage unit 48, and the communication I / F 50 are communicably connected to each other via an internal bus 52. A display control program 54 is stored in the storage unit 48. The display control ECU 42 functions as an acquisition unit 53 and a control unit 55 shown in FIG. 2 and performs display control processing described later when the display control program 54 is read from the storage unit 48 and expanded in the memory 46, and the display control program 54 expanded in the memory 46 is executed by the CPU 44. Note that the display control program 54 is an example of an in-vehicle display program.

[0031] A head-up display (hereinafter referred to as HUD) 56 and a meter display 58 (hereinafter referred to as MET) are connected to the display control ECU 42. The HUD 56 according to the present embodiment is a small HUD that uses reflection on the windshield or the like to set a part of the forward field of view of the occupant of the host vehicle as a display range (forming an image in the lower front of the foreground), as shown by reference numeral 60 in FIG. 3 to indicate the display range. The MET 58 is a display provided on the instrument panel of the host vehicle. The display control ECU 42 controls the information display on the HUD 56 and the MET 58. Preferably, the display area of the MET 58 is larger than the display area of the HUD 56.

[0032] Specifically, the acquisition unit 53 acquires information about surrounding targets existing around the host vehicle. The control unit 55 suppresses the display on the HUD 56 of an image of a surrounding target other than a first preceding vehicle that travels ahead of the lane in which the host vehicle is traveling, among the images of the surrounding targets for which information has been acquired by the acquisition unit 53. Note that the MET 58 is an example of a first display unit, and the HUD 56 is an example of a second display unit.

[0033] Next, the operation of this embodiment will be described. While the ignition of the host vehicle is on, the display control ECU 42 performs the display control process shown in FIG. 4. In step 100 of the display control process, the acquisition unit 53 acquires information on the lane recognized by the automatic driving ECU 34 from the automatic driving ECU 34. The lane information includes information on the host lane (such as whether it is a straight line or a curve) on which the host vehicle is traveling and information on adjacent lanes adjacent to the left and right of the host lane (such as the presence or absence of adjacent lanes). Then, based on the lane information acquired by the acquisition unit 53 from the automatic driving ECU 34, the control unit 55 generates a first-person single-lane image as shown in FIG. 5A as an example, which is an image including a road width line 62 simulating the boundary line of the lane, and causes the generated first-person single-lane image to be displayed on the HUD 56.

[0034] The first-person single-lane image is an image close to the state where the occupant looks ahead through the windshield of the host vehicle, and the lanes adjacent to the left and right of the host lane are excluded from the display target. The first-person single-lane image is an image in which the host lane is displayed as large as possible while omitting the display of information that is not important for monitoring driving, thereby minimizing annoyance.

[0035] In the next step 102, based on the lane information acquired by the acquisition unit 53 from the automatic driving ECU 34, the control unit 55 generates a third-person multi-lane image as shown in FIG. 5B as an example, which is an image including a road width line 62 simulating the boundary line of the lane. Then, the control unit 55 causes the generated third-person multi-lane image to be displayed on the MET 58.

[0036] The third-person multi-lane image is an image that shows the vehicle lane and the lanes adjacent to the left and right as if looking down on the host vehicle from the rear upper side. By excluding non-existent lanes from the display targets, there are at most three lanes under general conditions. However, it is not limited to a maximum of three lanes for the sake of clarity in transient states such as branching and merging. In the third-person multi-lane image, the host vehicle is displayed as icon 64. The third-person multi-lane image can display situations such as the approach of other vehicles from the right rear or left rear and the situation of holding off lane changes until other vehicles pass, and then making a lane change, when, for example, changing lanes of the host vehicle.

[0037] In the first-person single-lane image and the third-person multi-lane image, since the road width line 62 that simulates the lane boundary line is displayed, it is understood by the occupant that the first-person single-lane display image and the third-person multi-lane display image are road schematic diagrams in a similar reduction ratio relationship with the actual scene. Also, in the first-person single-lane image and the third-person multi-lane image, markers 66 are respectively displayed at positions corresponding to the future positions of the host vehicle, and the arrangement of the markers 66 advances (moves downward in terms of display) toward the reference position corresponding to the host vehicle according to the running of the host vehicle. Thereby, the occupant can intuitively grasp that the first-person single-lane image and the third-person multi-lane image correspond to the actual scene. Furthermore, in the first-person single-lane image and the third-person multi-lane image, a strip-shaped track line 68 that includes the arrangement of the markers 66 is displayed. In the first-person single-lane image and the third-person multi-lane image, the extending direction of the strip-shaped track line 68 indicates the traveling direction of the host vehicle, and the occupant can intuitively grasp the traveling position of the host vehicle.

[0038] In the next step 104, the acquisition unit 53 acquires from the automatic driving ECU 34 the surrounding object information representing the relative position, relative speed, importance, etc. of each surrounding object. The surrounding object information is an example of information regarding the surrounding objects. Also, in step 106, the acquisition unit 53 acquires from the automatic driving ECU 34 the surrounding situation information representing the presence or absence of an event and its type, etc. In step 108, the control unit 55 determines whether an event is occurring in the driving of the host vehicle based on the surrounding situation information acquired by the acquisition unit 53 from the automatic driving ECU 34.

[0039] When no event is occurring in the driving of the host vehicle (in the steady state), the determination in step 108 is negative and the process proceeds to step 110. In step 110, the control unit 55 determines whether there is a first leading vehicle that is traveling ahead of the lane in which the host vehicle is traveling, based on the surrounding object information. Then, when there is a first leading vehicle that is traveling ahead of the lane in which the host vehicle is traveling around the host vehicle, the control unit 55 causes only the first leading vehicle 70 to be superimposed and displayed on the first-person one-lane image displayed on the HUD 56, as shown in FIGS. 6 and 7 as an example.

[0040] Assuming that all the surrounding objects are displayed on the HUD 56 in a situation where there are surrounding objects other than the first leading vehicle around the host vehicle, as shown in FIG. 10 as an example, the display on the HUD 56 becomes bothersome to the occupant. In contrast, in the present embodiment, as shown in FIGS. 6 and 7, only the first leading vehicle 70 among the surrounding objects existing around the host vehicle is displayed on the HUD 56, so that it is possible to suppress the occupant from feeling bothered by the display on the HUD 56.

[0041] Also, in step 112, as shown in FIGS. 6 and 7 for example, the control unit 55 superimposes and displays the first preceding vehicle 70 on the third-person multi-lane image displayed on the MET 58, and superimposes and displays other surrounding objects 72 while gradually toning them down according to their importance. Examples of toning down include making the display color lighter, displaying in a dark color (e.g., gray), reducing the sharpness of the display to make it blurry, and the like. After performing the process of step 112, the process returns to step 104.

[0042] In a situation where there are surrounding objects other than the first preceding vehicle around the host vehicle, if all the surrounding objects are displayed on the MET 58 in a normal display, as shown in FIGS. 10 and 11 for example, the display on the MET 58 becomes troublesome for the occupant. In contrast, in this embodiment, as shown in FIGS. 6 and 7, the surrounding objects 72 other than the first preceding vehicle 70 existing around the host vehicle are displayed while being toned down according to their importance, so that it is possible to suppress the occupant from feeling troubled by the display on the MET 58. In addition, the importance of each of the surrounding objects other than the first preceding vehicle existing around the host vehicle can be recognized by the occupant.

[0043] Also, when an event is being performed during the driving of the host vehicle, the determination in step 108 is affirmed and the process proceeds to step 114. In step 114, the control unit 55 determines whether the event being performed during the driving of the host vehicle is an event in which a second preceding vehicle that precedes and travels in a lane other than the lane in which the host vehicle is traveling changes lanes (cuts in) into the lane in which the host vehicle is traveling.

[0044] If the determination in step 114 is affirmative, the process proceeds to step 116. In step 116, based on the importance level set for the second preceding vehicle, as shown in FIG. 8 as an example, the control unit 55 causes the HUD 56 to highlight the second preceding vehicle 74. An example of highlighting includes displaying in a specific display color (e.g., amber), displaying surrounded by a frame line, or displaying in a blinking manner. This can draw the attention of the occupant when the second preceding vehicle 74 changes lanes into the lane in which the host vehicle is traveling, i.e., when a so-called cut-in occurs, and make it easier for the occupant to recognize the cut-in. Also, since no peripheral object other than the second preceding vehicle 74 is displayed on the HUD 56, it is possible to prevent the occupant from feeling bothered by the display on the HUD 56.

[0045] In the next step 118, as shown in FIG. 8 as an example, the control unit 55 causes the MET 58 to highlight the second preceding vehicle 74 in the third-person multi-lane image displayed on the MET 58, and at the same time, causes other peripheral objects to be displayed with their tones turned down according to their importance levels. As an example, FIG. 8 shows a situation where there are no peripheral objects other than the second preceding vehicle 74 around the host vehicle. This can draw the attention of the occupant and make it easier for the occupant to recognize the cut-in, and at the same time, prevent the occupant from feeling bothered by the display on the MET 58. After performing the process of step 118, the process returns to step 104.

[0046] If the determination in step 114 is negative, the process proceeds to step 120. In step 120, the control unit 55 determines whether the event being performed in the driving of the host vehicle is an event in which the host vehicle changes lanes from the lane in which the host vehicle is traveling to a lane other than the lane in which the host vehicle is traveling.

[0047] If the determination in step 120 is affirmative, the process proceeds to step 122. In step 122, as shown in FIG. 9 for example, the control unit 55 causes the HUD 56 to superimposedly display a first preceding vehicle 76 that travels ahead of the lane in which the host vehicle is traveling and a second preceding vehicle 78 that travels ahead of a lane other than the lane in which the host vehicle is traveling. Thereby, when the host vehicle changes lanes from the lane in which it is traveling to a lane other than the lane in which it is traveling, it is possible to make it easier for the occupant who views the HUD 56 to recognize the presence of the first preceding vehicle 76 and the second preceding vehicle 78 related to the lane change. Further, since no peripheral object other than the first preceding vehicle 76 and the second preceding vehicle 78 is displayed on the HUD 56, it is possible to prevent the occupant from feeling bothered by the display of the HUD 56.

[0048] Also, in step 124, as shown in FIG. 9 for example, the control unit 55 causes the MET 58 to superimposedly display the first preceding vehicle 76 and the second preceding vehicle 78, and superimposedly displays other peripheral objects with their tones lowered according to their importance levels. As an example, FIG. 9 shows a situation where there are no peripheral objects other than the first preceding vehicle 76 and the second preceding vehicle 78 around the host vehicle. After the process of step 124 is performed, the process returns to step 104.

[0049] Thereby, when the host vehicle changes lanes from the lane in which it is traveling to a lane other than the lane in which it is traveling, it is possible to make it easier for the occupant who views the MET 58 to recognize the presence of the first preceding vehicle 76 and the second preceding vehicle 78 related to the lane change. Further, it is possible to prevent the occupant from feeling bothered by the display of the MET 58.

[0050] If the determination in step 120 is negative, the process proceeds to step 126. In step 126, the control unit 55 performs display control processing according to an event (such as lane merging or intersection passing) being performed in the driving of the host vehicle, and returns to step 104. Also in this case, since only the minimum necessary peripheral objects are displayed on the HUD 56 according to their importance levels, it is possible to prevent the occupant from feeling bothered by the display of the HUD 56.

[0051] As described above, in the present embodiment, the first display unit (MET58) is provided in the passenger compartment of the host vehicle and is visible to the passengers, and the second display unit (HUD56) is provided in the passenger compartment of the host vehicle and is visible to the passengers. Further, the acquisition unit 53 acquires information on surrounding objects existing around the host vehicle. Then, the control unit 55 suppresses displaying, on the second display unit, an image of a surrounding object other than the first preceding vehicle that travels ahead of the lane in which the host vehicle is traveling, among the images of the surrounding objects for which information has been acquired by the acquisition unit 53. Thereby, even when the area of the display region of the second display unit is limited as in HUD56 and the number of surrounding objects existing around the host vehicle is large, it is possible to suppress the passengers from feeling bothered by the display on the second display unit.

[0052] Further, in the present embodiment, when an event is occurring during the driving of the host vehicle, the control unit 55 causes the second display unit to display an image of a surrounding object other than the first preceding vehicle, which is set according to the event. In this way, by displaying an image of a surrounding object other than the first preceding vehicle according to the event occurring during the driving of the host vehicle, it is possible to prompt the passengers viewing the display on the second display unit to pay attention.

[0053] Further, in the present embodiment, when the event occurring during the driving of the host vehicle is an event in which a second preceding vehicle that travels ahead of a lane other than the lane in which the host vehicle is traveling changes lanes into the lane in which the host vehicle is traveling, the control unit 55 causes the second display unit to highlight the second preceding vehicle. Thereby, when a so-called cut-in occurs in which the second preceding vehicle changes lanes into the lane in which the host vehicle is traveling, it is possible to make it easier for the passengers to recognize the cut-in.

[0054] Also, in the present embodiment, when the event occurring during the driving of the host vehicle is an event in which the host vehicle changes lanes from the lane in which the host vehicle is traveling to a lane other than the lane in which the host vehicle is traveling, the control unit 55 causes the second display unit to display a first preceding vehicle traveling ahead in the lane in which the host vehicle is traveling and a second preceding vehicle traveling ahead in a lane other than the lane in which the host vehicle is traveling. Thereby, when the host vehicle changes lanes from the lane in which the host vehicle is traveling to a lane other than the lane in which the host vehicle is traveling, the presence of the first preceding vehicle and the second preceding vehicle related to the lane change can be easily recognized by the occupant.

[0055] Also, in the present embodiment, the control unit 55 causes the first display unit to display an image of a surrounding object whose information has been acquired by the acquisition unit 53. As a result, the display modes of the first display unit and the second display unit are different. When the area of the display region of the first display unit is relatively large like the MET58, the display region of the first display unit can be effectively utilized.

[0056] Also, in the present embodiment, in the first display unit, the control unit 55 causes an image of a surrounding object other than the first preceding vehicle traveling ahead in the lane in which the host vehicle is traveling to be displayed less conspicuously than the image of the first preceding vehicle. Thereby, even when there are a large number of surrounding objects existing around the host vehicle, it is possible to prevent the occupant from feeling bothered by the display on the first display unit.

[0057] Also, in the present embodiment, the control unit 55 causes the image of a surrounding object other than the first preceding vehicle to be displayed less conspicuously than the image of the first preceding vehicle by toning down the display of the image of the surrounding object other than the first preceding vehicle. Thereby, by displaying the image of the first preceding vehicle and the images of other surrounding objects with a clear distinction, the occupant can recognize the degree of influence on the host vehicle during the driving of the host vehicle.

[0058] In addition, in the present embodiment, the first display unit is a display (MET58) provided on the instrument panel of the host vehicle, and the second display unit is a HUD56 that uses, as a display range, a part of the forward field of view of the occupant of the host vehicle by reflection on the windshield or the like. When the occupant of the host vehicle visually recognizes the front outside of the host vehicle, the occupant can quickly recognize the content displayed on the HUD56 without intentionally changing the focus. In the display area of the HUD56, by suppressing the display of images of surrounding targets other than the first preceding vehicle, it is possible to prevent the occupant who is trying to visually recognize the front outside of the vehicle from feeling annoyed. Further, on the MET58, it is possible to display surrounding targets other than the first preceding vehicle that are suppressed on the HUD56.

[0059] In addition, in the present embodiment, the sizes of the display areas of the first display unit and the second display unit are different. By suppressing the amount of information displayed on the second display unit (HUD56) compared to the amount of information displayed on the first display unit (MET58), it is possible to reduce the annoyance of the occupant and provide the occupant with an amount of information commensurate with the display area.

[0060] Note that in FIGS. 6 to 9, an example in which the surrounding target is a vehicle (four-wheeled vehicle) is shown, but the present invention is not limited to this, and the surrounding target may be a two-wheeled vehicle (such as a bicycle) or a pedestrian.

[0061] In the above description, an aspect in which MET58 is applied as the first display unit and HUD56 is applied as the second display unit has been described, but the present invention is not limited to this. For example, a center monitor provided at the center of the instrument panel of the vehicle may be applied as the first display unit or the second display unit.

[0062] In the above description, an aspect in which the automatic driving ECU34 performs level 2 or level 3 automatic driving has been described, but the present invention is not limited to this, and it may be applied to an aspect in which level 4 or level 5 automatic driving is performed.

[0063] In addition, in the above, an example of the in-vehicle display program according to the present disclosure, the display control program 54, has been described as being pre-stored (installed) in the storage unit 48 of the display control ECU 42. However, the in-vehicle display program according to the present disclosure can also be provided in a form recorded on a non-transitory recording medium such as a CD-ROM, a DVD-ROM, or a memory card.

Explanation of Signs

[0064] 10 In-vehicle system 34 Automatic driving ECU 42 Display control ECU 53 Acquisition unit 55 Control unit 56 Head-up display (HUD) 58 Meter display (MET)

Claims

1. A first display unit that is provided in a vehicle interior and is visible to an occupant of the vehicle; A second display unit that is provided in a passenger compartment of the vehicle and is visible to a passenger; an acquisition unit that acquires information about surrounding targets present around the host vehicle; a control unit that displays, on the first display unit, a lane on which the host vehicle is traveling, among images of surrounding objects whose information has been acquired by the acquisition unit, together with an image showing the host vehicle, and, when the host vehicle is traveling around a curve, displays the lane in a curved manner on the second display unit, and displays the lane in a straight line around the image showing the host vehicle and in a curved manner in front of the image showing the host vehicle on the first display unit; An in-vehicle display device comprising:

2. The in-vehicle display device according to claim 1 , wherein the first display unit is a meter display of the host vehicle, and the second display unit is a head-up display of the host vehicle.

3. 3. The in-vehicle display device according to claim 1, wherein the first display unit has a larger display area than the second display unit, and the second display unit has a display area below the foreground when an occupant of the vehicle views the area outside the vehicle.

4. Acquire information about surrounding targets present around the vehicle; Among the images of the surrounding objects from which the information has been obtained, the lane on which the host vehicle is traveling is displayed together with an image showing the host vehicle on a first display unit that is provided in the cabin of the host vehicle and is visible to the occupants, and when the host vehicle is traveling on a curve, the lane is displayed in a curved manner on a second display unit that is provided in the cabin of the host vehicle and is visible to the occupants, and is displayed in a straight line around the image showing the host vehicle on the first display unit and is displayed in a curved manner on the front side of the image showing the host vehicle. The in-vehicle display method includes causing a computer to execute a process including the steps of:

5. On the computer, Acquire information about surrounding targets present around the vehicle; Among the images of the surrounding objects from which the information has been obtained, the lane on which the host vehicle is traveling is displayed together with an image showing the host vehicle on a first display unit that is provided in the cabin of the host vehicle and is visible to the occupants, and when the host vehicle is traveling on a curve, the lane is displayed in a curved manner on a second display unit that is provided in the cabin of the host vehicle and is visible to the occupants, and is displayed in a straight line around the image showing the host vehicle on the first display unit and is displayed in a curved manner on the front side of the image showing the host vehicle. The present invention relates to an in-vehicle display program for executing a process including the above.

Images