Vehicle display control device, display method, storage medium and vehicle display system

Abstract

The present disclosure provides a vehicle display control device, a display method, a storage medium storing a program for causing a computer to execute, and a vehicle display system. The vehicle display control device includes a display control unit, which causes a display unit disposed in a vehicle compartment to display an object mark display and a lane display, wherein the object mark display is a display in which an object mark existing in front of the vehicle is displayed from the viewpoint of the object mark as viewed from the vehicle side, and the lane display is a display in which a lane extending in front of the vehicle is displayed from the viewpoint of the object mark as viewed from the vehicle side, and the display control unit changes the display magnification of the object mark display relative to the width of the lane display according to the distance between the object mark and the vehicle.

Description

Technical Field

[0001] The present disclosure relates to a vehicle display control device, a display method, a storage medium storing a program for causing a computer to execute, and a vehicle display system. Background Art

[0002] Japanese Patent Publication No. 2019-090627 discloses a display device that displays images of the lane in which the vehicle is traveling, the vehicle, and objects (surrounding vehicles) in front of the vehicle when implementing driving assistance such as autonomous driving through vehicle control.

[0003] The image of the object is displayed larger for surrounding vehicles that are closer to the host vehicle. The occupant can understand the distance between the host vehicle and the object by looking at the display device.

[0004] However, if the size of the object is simply changed according to the distance from the vehicle, it is conceivable that the image of the object is displayed too large relative to the image of the lane, etc., or conversely, the image of the object is displayed too small to be difficult to recognize. Therefore, although it is preferable to adjust the size of the image of the object in a manner that is easy for the occupant to understand, this point is not taken into account in the technology of Japanese Patent Application Publication No. 2019-090627. Summary of the invention

[0005] The present disclosure is an invention completed in view of the above situation, and its purpose is to provide a vehicle display control device, a display method, a storage medium storing a program for computer execution, and a vehicle display system that can display an object existing in front of the vehicle in an appropriate size.

[0006] A vehicle display control device according to a first embodiment of the present invention includes a display control unit, which causes a display unit provided in a vehicle cabin to display an object mark display and a lane display, wherein the object mark display is a display in which an object mark existing in front of the vehicle is represented from a viewpoint of the object mark as viewed from the vehicle side, and the lane display is a display in which a lane extending in front of the vehicle is represented from a viewpoint of the object mark as viewed from the vehicle side, and the display control unit changes a display magnification of the object mark display relative to a width of the lane display according to a distance between the object mark and the vehicle.

[0007] In the vehicle display control device involved in the first embodiment, a display unit is provided in the vehicle compartment. In addition, the vehicle display control device has a display control unit. The display control unit causes the display unit to display the object mark existing in front of the vehicle and the lane extending in front of the vehicle through the object mark display and the lane display. In addition, the object mark display and the lane display are respectively displayed from the viewpoint of the object mark observed from the vehicle side. Thus, the occupant can grasp the object mark and the lane existing in front of the vehicle from the same viewpoint as the situation of confirming the scenery in front of the vehicle from the driver's seat by looking at the display unit.

[0008] In addition, the display control unit changes the display magnification of the object display relative to the width of the lane display according to the distance between the object and the vehicle. Thus, for example, the distance between the vehicle and the object can be shown to the occupant in a manner that makes it easy to understand the positional relationship between the lane extending in front of the vehicle and the object as needed. Therefore, in the vehicle display control device involved in technical solution 1, the object existing in front of the vehicle can be displayed in an appropriate size.

[0009] A vehicle display control device according to a second aspect of the present invention is configured as described in the first aspect, wherein the display control unit reduces a display magnification of the object mark relative to a width of the lane display as a distance between the object mark and the vehicle decreases.

[0010] In the vehicle display control device according to the second embodiment, the object mark is displayed in such a manner that the size of the object mark is reduced relative to the width of the lane display as the distance between the object mark and the vehicle decreases. Thus, when the object mark approaches the vehicle, the object mark is not displayed too large relative to the lane display, thereby preventing the occupant from feeling annoyed when viewing the display unit.

[0011] The vehicle display control device involved in the third embodiment of the present invention is that, in the structure described in the second embodiment, when the distance between the object marker and the vehicle is less than the first distance, the display control unit reduces the display magnification of the object marker display relative to the lane display as the distance between the object marker and the vehicle becomes smaller.

[0012] In the vehicle display control device according to the third aspect, when the distance between the object mark and the vehicle is less than the first distance, the object mark display is displayed in such a manner that the size of the object mark display relative to the width of the lane display decreases as the distance between the object mark and the vehicle decreases. Thus, for example, when the distance between the object mark and the vehicle is close, it is possible to prevent the object mark display from being displayed too large relative to the lane display and causing annoyance to the occupant viewing the display unit.

[0013] The vehicle display control device involved in the fourth embodiment of the present invention is that, in the structure described in the second embodiment or the third embodiment, the display control unit reduces the display magnification as the distance between the object mark and the vehicle approaches, so that the object mark is displayed on the inner side of the lane display in the display unit and is displayed at a position that does not overlap with the lane display.

[0014] In the vehicle display control device according to the fourth aspect of the present invention, the object mark is displayed inside the lane display at a position that does not overlap with the lane display. Thus, even when the object mark is close to the vehicle, the lane display is not excluded due to the object mark display, so the object mark and the road shape in front of the vehicle can be properly grasped.

[0015] A vehicle display control device according to a fifth aspect of the present invention is configured as described in any one of the first to fourth aspects, wherein the display control unit causes the display unit to display so that the object marker display overlaps a route display showing a planned travel route of the vehicle.

[0016] In the vehicle display control device according to the fifth aspect, the object mark display is displayed in a state of overlapping with the route display. Thus, the occupant can easily understand the positional relationship between the planned travel route of the vehicle and the object mark by viewing the display unit.

[0017] A vehicle display control device according to a sixth aspect of the present invention is configured as described in any one of the first to fifth aspects, wherein the display control unit fixes a display magnification of the object marker display when the vehicle performs a lane change or a lane change preparation.

[0018] In the vehicle display control device involved in the sixth embodiment, in a scene that promotes the attention of the occupants, such as when the vehicle performs a lane change or lane change preparation, the display magnification of the object mark display is fixed and displayed. Thus, for example, when the lane change or lane change preparation is performed in a state where the object mark is close to the vehicle, the display magnification can be set in a manner that more emphasizes the display of the object mark than other displays such as the lane display. As a result, when the vehicle performs a lane change or lane change preparation, the object mark display can be displayed at an appropriate size to promote the attention of the occupants.

[0019] The vehicle display control device involved in the seventh embodiment of the present invention is that, in the structure described in any one of the third to sixth embodiments, the display control unit fixes the display magnification of the object mark when the distance between the object mark and the vehicle is greater than the first distance and less than a second distance, and the second distance is a distance longer than the first distance.

[0020] In the vehicle display control device according to the seventh aspect, when the distance between the object mark and the vehicle is greater than or equal to a first distance and less than a second distance, the display magnification of the object mark display is fixed, and the second distance is a distance longer than the first distance. Thus, for example, when the distance between the object mark and the vehicle is not sufficiently increased, the display magnification of the object mark display is fixed, thereby preventing the object mark display from being displayed too small. As a result, the occupant can appropriately grasp the object mark that exists in front of the vehicle and at a relatively far distance by looking at the display unit.

[0021] The vehicle display control device involved in the eighth aspect of the present invention is that, in the structure described in the seventh aspect, when the distance between the object mark and the vehicle is greater than the first distance and less than the second distance, the display control unit increases the transmittance of the object mark display as the distance between the object mark and the vehicle increases.

[0022] In the vehicle display control device involved in the eighth aspect, for example, when the distance between the object mark and the vehicle is sufficiently increased, the object mark display is displayed in a manner such that the transmittance ratio of the object mark display is increased as the distance between the object mark and the vehicle is increased. Therefore, for the object mark that is far away from the vehicle and has a low level of attention that requires the attention of the occupant, the presence on the display unit can be reduced. As a result, the occupant can effectively grasp the object mark with a high level of attention that requires the attention by looking at the display unit.

[0023] A vehicle display control device according to a ninth aspect is the device according to the seventh aspect or the eighth aspect, wherein the display control unit deletes display of the object marker from the display unit when the distance between the object marker and the vehicle is equal to or greater than the second distance.

[0024] In the vehicle display control device according to the ninth aspect, when the distance between the object mark and the vehicle increases to the second distance or more, the display of the object mark can be deleted from the display unit so that only the minimum necessary information can be displayed on the display unit.

[0025] The vehicle display control device involved in the tenth embodiment of the present invention is a display control device for a vehicle, in which, in the structure described in any one of the third embodiment to the ninth embodiment, the display control unit increases the display magnification of the object mark as the distance between the object mark and the vehicle approaches when the distance between the vehicle and the object mark is less than a third distance, and the third distance is a shorter distance than the first distance.

[0026] In the vehicle display control device involved in the tenth embodiment, when the distance between the object mark and the vehicle is set to be less than the third distance and the object mark and the vehicle suddenly approach each other, the display magnification of the object mark display is increased as the distance between the object mark and the vehicle is reduced. Therefore, when the object mark and the vehicle suddenly approach each other, the size of the object mark display is rapidly enlarged relative to the lane display. As a result, the occupant can quickly grasp the object mark that suddenly approaches the vehicle by looking at the display unit.

[0027] The vehicle display control device involved in the eleventh embodiment of the present invention is that, in the structure described in any one of the first to tenth embodiments, the display control unit displays a front end display indicating the position of the front end of the vehicle in the lower part of the display area of ​​the display unit, and displays the lane display and the object mark display on the upper side of the vehicle of the front end display.

[0028] In the vehicle display control device involved in the eleventh embodiment, since the front end display is displayed in the lower part of the display area of ​​the display unit, the distance between the object mark and the (engine) hood of the vehicle can be grasped by the positional relationship between the object mark display and the front end display. As a result, the occupant can intuitively grasp the distance between the vehicle and the object mark by looking at the display unit.

[0029] The vehicle display control device involved in the twelfth embodiment of the present invention is a structure described in any one of the first to eleventh embodiments, wherein the display unit is a projection surface that is arranged on the front side of the driver's seat and is projected on the upper side of the instrument panel of the vehicle through an upward-looking display device.

[0030] In the vehicle display control device involved in the twelfth embodiment of the present invention, since the display unit is a projection surface provided on the vehicle front side of the driver's seat and the vehicle upper side of the instrument panel, the occupant who is driving can grasp the object mark existing in front of the vehicle without greatly moving his / her sight. In addition, since the object mark display can be displayed on the projection surface in an appropriate size, the situation where the object mark display is displayed too large is avoided. As a result, when the occupant looks at the projection surface, the situation where he / she feels dizzy due to the object mark display can be suppressed.

[0031] The display method involved in the thirteenth embodiment of the present invention is a display method for causing a display unit arranged in a vehicle cabin to display an object mark display and a lane display, wherein the object mark display is a display in which an object mark existing in front of the vehicle is represented by the viewpoint of the object mark as viewed from the vehicle side, and the lane display is a display in which a lane extending in front of the vehicle is represented by the viewpoint of the object mark as viewed from the vehicle side, and in the display method, the display magnification of the object mark display relative to the width of the lane display is changed according to the distance between the object mark and the vehicle.

[0032] In the display method according to the thirteenth aspect of the present invention, as described above, it is possible to display the object marker existing in front of the vehicle in an appropriate size.

[0033] The program involved in the fourteenth embodiment of the present invention is a program for causing a display unit provided in a vehicle cabin to display an object marker display and a lane display, wherein the object marker display is a display in which an object marker existing in front of the vehicle is represented by a viewpoint of the object marker as viewed from the vehicle side, and the lane display is a display in which a lane extending in front of the vehicle is represented by a viewpoint of the object marker as viewed from the vehicle side, and the program causes a computer to execute the following processing, namely, changing a display magnification of the object marker display relative to a width of the lane display according to a distance between the object marker and the vehicle.

[0034] In the program according to the fourteenth aspect, as described above, it is possible to display the object marker existing in front of the vehicle in an appropriate size.

[0035] A vehicular display system according to a fifteenth aspect of the present invention includes the vehicular display control device according to the first aspect and a display device.

[0036] In the vehicle display system according to the fifteenth aspect, it is possible to cause the display device to display the object marker existing in front of the vehicle in an appropriate size.

[0037] Effects of the Invention

[0038] According to the vehicle display control device according to the first aspect, it is possible to display the object marker existing in front of the vehicle in an appropriate size.

[0039] According to the vehicle display control device according to the second aspect or the third aspect, it is possible to suppress the occupant from feeling bored when viewing the display unit.

[0040] According to the vehicle display control device according to the fourth aspect, it is possible to appropriately grasp the object landmark and the road shape ahead of the vehicle.

[0041] According to the vehicle display control device according to the fifth aspect, the positional relationship between the planned travel route of the vehicle and the target object can be easily grasped.

[0042] According to the vehicle display control device according to the sixth aspect, when the vehicle performs a lane change or is preparing for a lane change, the object marker can be displayed in an appropriate size to prompt the occupant to pay attention.

[0043] According to the vehicle display control device according to the seventh aspect, it is possible to appropriately grasp a target object that is located in front of the vehicle and at a relatively distant position.

[0044] According to the vehicle display control device according to the eighth aspect, it is possible to effectively grasp objects with a high level that call attention.

[0045] According to the vehicle display control device according to the ninth aspect, the display unit can be caused to display only the minimum necessary upper portion.

[0046] According to the vehicle display control device according to the tenth aspect, it is possible to quickly grasp an object suddenly approaching the vehicle.

[0047] According to the vehicle display control device according to the eleventh aspect, the distance between the vehicle and the object can be intuitively understood.

[0048] According to the vehicle display control device of the twelfth aspect, a driver can understand the object in front of the vehicle without greatly shifting his / her sight, and can prevent the driver from feeling dizzy when viewing the displayed object.

[0049] According to the display method according to the thirteenth aspect, it is possible to display the object marker existing in front of the vehicle in an appropriate size.

[0050] According to the program according to the fourteenth aspect, it is possible to display a target object existing in front of the vehicle in an appropriate size.

[0051] According to the vehicle display system according to the fifteenth aspect, it is possible to cause the display device to display the object marker existing in front of the vehicle in an appropriate size. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Embodiments of the present invention will be described in detail based on the following drawings, in which:

[0053] Figure 1 This is a schematic diagram showing the front portion of a vehicle cabin in a vehicle to which the vehicle display control device according to the embodiment is applied, as viewed from the rear side of the vehicle.

[0054] Figure 2 It is a block diagram showing a hardware configuration of a vehicle display control device according to an embodiment.

[0055] Figure 3 It is a block diagram showing a functional structure of a vehicle display control device according to an embodiment.

[0056] Figure 41 is a display example of the second display unit as the display unit according to the embodiment, and is a diagram showing a state in which the distance between the preceding vehicle as an object mark and the vehicle is a first distance.

[0057] Figure 5 This is a schematic diagram for explaining a display method of an object mark display according to an embodiment.

[0058] Figure 6 1 is a display example of the second display unit according to the present embodiment, and is a diagram showing a state in which the distance between the preceding vehicle and the vehicle is smaller than the first distance.

[0059] Figure 7 1 is a display example of the second display unit according to the present embodiment, and is a diagram showing a situation in which a lane change or lane change preparation of the vehicle is performed in a state in which the distance between the preceding vehicle and the vehicle is smaller than the first distance.

[0060] Figure 8 This is a flowchart showing an example of the flow of display processing according to the present embodiment.

[0061] Fig. 9 This is a flowchart showing an example of the flow of the object mark display process according to the present embodiment.

[0062] Fig.10 This is a schematic diagram for explaining a display method of an object display according to another embodiment.

[0063] Fig.11 It is a display example of the second display unit according to another embodiment, and is a diagram showing a state in which the distance between the preceding vehicle and the vehicle is smaller than the third distance.

[0064] Fig.12 This is a flowchart showing an example of the flow of object display processing according to another embodiment. DETAILED DESCRIPTION

[0065] [First embodiment]

[0066] With reference to the accompanying drawings, a vehicle 12 to which the vehicle display control device 10 according to the first embodiment is applied is described. In addition, the vehicle 12 of the present embodiment is configured as an example to be able to switch between automatic driving and manual driving. In addition, automatic driving refers to a driving method of the vehicle in which a part or all of the operations of the accelerator, brake, turn indicator, steering wheel, etc. are automatically performed. In addition, manual driving refers to a driving method of the vehicle in which the driver performs all driving operations (operations of the accelerator, brake, turn indicator, steering wheel, etc.). As Figure 1 As shown, an instrument panel 14 is disposed at a front portion of a cabin of the vehicle 12 .

[0067] The instrument panel 14 extends in the vehicle width direction, and a steering wheel 16 is provided on the vehicle right side of the instrument panel 14. That is, in the present embodiment, as an example, a right-hand drive vehicle is provided with the steering wheel 16 on the right side, and the driver's seat is provided on the vehicle right side.

[0068] A windshield 18 is provided at the front end portion of the instrument panel 14. The windshield 18 extends in the vehicle up-down direction and the vehicle width direction, and divides the vehicle cabin interior and the vehicle cabin exterior.

[0069] The right end of the windshield 18 is fixed to a front pillar 20 on the right side of the vehicle. The front pillar 20 extends in the vehicle vertical direction, and the windshield 18 is fixed to the inner end of the front pillar 20 in the vehicle width direction. In addition, the front end of the front side glass 22 is fixed to the outer end of the front pillar 20 in the vehicle width direction. In addition, the left end of the windshield 18 is fixed to a front pillar on the left side of the vehicle (not shown).

[0070] Here, the first display unit 24 is provided on the instrument panel 14. The first display unit 24 is provided in the vehicle front of the driver's seat in the instrument panel 14 and is provided at a position that is visible to the driver when the driver directs his / her sight toward the vehicle front.

[0071] A second display unit 26 is provided as a display unit on the windshield 18. The second display unit 26 is provided on the upper side of the vehicle with respect to the first display unit 24 and is displayed by a head-up display device 44 (see Figure 2 Specifically, a head-up display device 44 is provided on the vehicle front side compared to the instrument panel 14, and an image is projected from the head-up display device 44 onto the second display unit 26 of the windshield 18.

[0072] (Hardware Configuration of Vehicle Display Control Device 10)

[0073] The vehicle 12 is provided with an ECU (Electronic Control Unit) 28 as a display control unit. Figure 2 1 is a block diagram showing the hardware structure of the vehicle display control device 10. Figure 2As shown, the ECU 28 of the vehicle display control device 10 is configured to include a CPU (Central Processing Unit: processor) 30, a ROM (Read Only Memory) 32, a RAM (Random Access Memory) 34, a storage 36, a communication interface 38, and an input / output interface 40. Each structure is connected to each other via a bus 42 so as to be able to communicate with each other. The CPU 30 is an example of a processor, and the RAM 34 is an example of a memory.

[0074] The CPU 30 is a central processing unit and executes various programs or controls various parts. That is, the CPU 30 reads the program from the ROM 32 or the storage 36 and executes the program using the RAM 34 as a work area. The CPU 30 implements the control of the above-mentioned various structures and various calculation processes according to the program recorded in the ROM 32 or the storage 36.

[0075] ROM32 stores various programs and various data. RAM34 temporarily stores programs or data as a work area. Storage 36 is composed of HDD (Hard Disk Drive) or SSD (Solid State Drive), and stores various programs including an operating system, and various data. In this embodiment, programs and various data for implementing display processing are stored in ROM32 or storage 36.

[0076] The communication interface 38 is an interface for enabling the vehicle display control device 10 to communicate with a server and other devices not shown in the figure, for example, using standards such as Ethernet (registered trademark), LTE (Long Term Evolution), FDDI (Fiber Distributed Data Interface), Wi-Fi (registered trademark), etc.

[0077] The first display unit 24, the head-up display device 44 for projecting an image onto the second display unit 26, and the actuator 46 are connected to the input / output interface 40. The actuator 46 is configured to include a steering wheel actuator, an accelerator actuator, and a brake actuator. The steering wheel actuator is a device for steering the vehicle 12. The accelerator actuator is a device for accelerating the vehicle 12. In addition, the brake actuator is a device for decelerating the vehicle 12 by controlling the brake. In addition, the input / output interface 40 is connected to sensor components and a GPS device (not shown) for automatically driving the vehicle 12.

[0078] (Functional Structure of Vehicle Display Control Device 10)

[0079] The vehicle display control device 10 realizes various functions using the above-mentioned hardware resources. Figure 3 Next, the functional configuration realized by the vehicle display control device 10 will be described.

[0080] like Figure 3 As shown, the vehicle display control device 10 is configured to include, as a functional structure, a communication unit 50, an acquisition unit 51, an operation plan setting unit 52, an automatic driving control unit 54, an image generation unit 56, and a display instruction unit 58. In addition, each functional structure is realized by the CPU 30 reading and executing a program stored in the ROM 32 or the storage 36.

[0081] The communication unit 50 transmits or receives data to or from an external server or other device via the communication interface 38. For example, the communication unit 50 transmits or receives data such as map data and traffic conditions stored in the server. In addition, the communication unit 50 may also be configured to perform inter-vehicle communication with surrounding vehicles.

[0082] The acquisition unit 51 acquires the driving environment of the vehicle 12 from an external sensor (not shown) via the input / output interface 40 as peripheral information. The external sensor is configured to include a camera that captures a predetermined range, a millimeter-wave radar that sends a detection wave to a predetermined range, and a laser radar (Light Detection and Ranging / Laser Imaging Detection and Ranging) that scans a predetermined range. In addition, the "peripheral information" includes, as an example, the width of the driving road of the vehicle 12, other vehicles traveling near the vehicle 12, obstacles, etc.

[0083] The operation plan setting unit 52 sets the operation plan of the vehicle 12. Specifically, the operation plan from the current position to the destination is set by the passenger inputting the destination.

[0084] The automatic driving control unit 54 automatically drives the vehicle 12 according to the set operation plan while taking into account the position information and the environmental information around the vehicle 12. Specifically, the automatic driving control unit 54 controls the actuator 46 so that the vehicle 12 automatically drives.

[0085] The image generation unit 56 generates an image for display on the second display unit 26. In the present embodiment, the second display unit displays the preceding vehicle traveling in front of the vehicle 12 in various ways, especially according to the distance between the preceding vehicle and the vehicle 12. The preceding vehicle corresponds to the "object mark" in the present invention.

[0086] The display instruction unit 58 has a function of causing the second display unit 26 to display the image generated by the image generating unit 56, and a function of deleting the image displayed on the second display unit 26. Figures 4 to 7 Next, the functions of the image generating unit 56 and the display instructing unit 58 will be described.

[0087] like Figure 4 As shown, an object marker display V1 and a lane display L are displayed at the central portion of the display area of ​​the second display unit 26. The object marker display V1 is an image that simulates a preceding vehicle traveling in front of the vehicle 12. The lane display L is an image that simulates a lane extending in front of the vehicle 12. In addition, the lane display L is composed of images L1 and L2 that simulate two lines corresponding to the lines on both sides of the width direction of the lane in which the vehicle 12 is traveling. The images L1 and L2 show the lane in perspective, and the interval between the images L1 and L2 is gradually narrowed from the lower side to the upper side of the image area. Therefore, when viewing the lane display L, it can be seen that the lane extends in the depth direction of the display area (the direction in front of the vehicle).

[0088] When the object display V1 is viewed, it can be seen that the preceding vehicle is in front of the vehicle 12 and is traveling in the same lane. In addition, the object display V1 and the lane display L are images that simulate the lane and the preceding vehicle from the viewpoint of the preceding vehicle as viewed from the vehicle 12 side, that is, from the viewpoint of the cabin of the vehicle 12. The object display V1 is not limited to the preceding vehicle in the same lane as the vehicle 12, and may also be an image that simulates a vehicle traveling diagonally in front of the vehicle.

[0089] These object marker displays V1 and lane displays L are displayed based on the GPS device or map data mounted on the vehicle 12, and information detected by any one of the various sensor-type components mounted on the vehicle 12 or a combination thereof. For example, the position of the vehicle 12 can be detected by the GPS device mounted on the vehicle 12. In addition, the lane extending in front of the vehicle 12 can be detected based on the position data of the vehicle 12 detected by the GPS device and the map data. In addition, as a sensor for detecting the leading vehicle, a combination of sensors such as a stereo camera, an ultrasonic sensor, a millimeter wave sensor, and a laser radar is used. In addition, it can also be configured so that the position of the vehicle and the positions of the surrounding vehicles can be grasped by communicating with the surrounding vehicles between vehicles.

[0090] In addition, a path display R is displayed overlapping the lane display L. The path display R is an image that simulates the planned travel path of the vehicle 12 that is planned based on the operation plan. As an example, the path display R is a strip-shaped graphic, and a plurality of points indicating equally spaced positions on the path are arranged along the center line. When viewing Figure 4 When the path shown is indicated by R, it can be understood that the vehicle 12 is expected to move straight forward in the lane in which it is traveling.

[0091] In addition, a front display C is displayed at the lower part of the display area of ​​the second display unit 26. The front display C is an image that simulates the position of the front end of the vehicle 12. The front display C is composed of a linear figure extending along the width direction of the display area, and the central part protrudes upward in a trapezoidal shape. The protruding part C1 of the trapezoidal shape simulates the shape of the (engine) hood of the front end of the vehicle 12. According to the relative positional relationship between the protruding part C1 and the object mark display V1, the relative positional relationship between the front end of the vehicle 12 and the preceding vehicle can be known.

[0092] In this embodiment, the object mark display V1 is displayed at a predetermined display magnification relative to the width of the lane display L (the width between the image L1 and the image L2). Since the display magnification is changed according to the distance between the vehicle 12 and the preceding vehicle, the size of the object mark display V1 is displayed in various ways. Figure 5 Schematic diagram of Figure 4 , Figure 6 as well as Figure 7 The display method of the object marker display V1 will be specifically described based on the display example shown in FIG.

[0093] exist Figure 5, the relationship between the change in the display magnification of the object display V1 relative to the width of the lane display L and the distance D between the vehicle 12 and the preceding vehicle is shown using a schematic diagram observed from a top view. In the figure, the position of D=0 shows the position where the distance between the vehicle 12 and the preceding vehicle is 0m. In addition, as an example, the distance D between the vehicle 12 and the preceding vehicle is the length of the line segment connecting the center of the vehicle 12 and the center of the preceding vehicle when viewed from a top view. Therefore, although the situation where the distance between the vehicle 12 and the preceding vehicle is 0m (D=0) is actually impossible because the vehicle 12 and the preceding vehicle become overlapping positions when viewed from a top view, it is set as a virtual reference position for estimating the distance between the vehicle 12 and the preceding vehicle.

[0094] In the present embodiment, when the distance between the vehicle 12 and the preceding vehicle is greater than or equal to the first distance D1 and less than the second distance D2, the display magnification of the object marker display V1 relative to the width of the lane display L is fixed to a predetermined value. Specifically, the display magnification is set to be equal to the magnification of the size occupied by the preceding vehicle in the width direction relative to the actual lane width (display magnification 100%). As an example, the first distance D1 and the second distance D2 are set to D1 = 100m and D2 = 115m.

[0095] The area that is more than 100m and less than 115m away from the vehicle 12 corresponds to the upper end of the lane display L. Therefore, when the leading vehicle travels at a distance of more than 100m and less than 115m from the vehicle 12, the width of the lane display L corresponding to the position of the object marker display V1 of the leading vehicle is fixed to a predetermined value. Moreover, since the display magnification of the object marker display V1 relative to the width of the lane display L is also fixed, the size of the object marker display V1 is maintained at a constant size. Preferably, the size of the object marker display V1 at this time is set to a minimum size that allows the object marker display V1 to be easily grasped when viewed from the driver's seat. That is, even when the distance D between the leading vehicle and the vehicle 12 is more than 100m away, the size of the object marker display V1 in the second display unit 26 will be maintained at a size that the occupants can easily grasp. Therefore, by viewing the second display unit 26, the occupants can grasp the existence of the leading vehicle without missing it. In addition, Figure 4 The display example shown is a display example of the second display unit 26 in a state where the distance between the vehicle 12 and the preceding vehicle is the first distance D1.

[0096] In addition, if Figure 5As shown, when the distance between the vehicle 12 and the preceding vehicle is greater than or equal to the first distance D1 and less than the second distance D2, the transmittance of the object marker display V1 on the second display unit 26 increases as the preceding vehicle moves away from the vehicle 12. Therefore, when the distance D between the preceding vehicle and the vehicle 12 moves away from the vehicle 12 to more than 100 m, the size of the object marker display V1 does not change, but the transmittance of the object marker display V1 increases as the preceding vehicle moves away from the vehicle 12. As a result, the presence of the object marker display V1 on the second display unit 26 decreases.

[0097] Furthermore, when the distance between the vehicle 12 and the preceding vehicle is greater than or equal to the second distance, in order to remind the occupant to pay attention to other information that should be given priority, the object marker display V1 is deleted from the second display unit 26. That is, for a preceding vehicle that is more than 115 m away from the vehicle 12, the corresponding object marker display V1 is deleted from the second display unit 26.

[0098] On the other hand, when the distance between the vehicle 12 and the preceding vehicle is less than the first distance D1, the display magnification of the object mark display V1 relative to the width of the lane display L is reduced as the distance D between the preceding vehicle and the vehicle 12 becomes shorter. In the present embodiment, when the distance D between the preceding vehicle and the vehicle is D=D1 (100 m), the display magnification is set to 100%. Furthermore, the display magnification is set to decrease as the preceding vehicle approaches the vehicle 12, and when the distance D is D=0 m, the display magnification is set to 60%.

[0099] As an example, Figure 6 FIG. 2 shows an example of a display on the second display unit 26 when the vehicle 12 and the preceding vehicle are separated by 10 m. As shown in the figure, the width of the lane display L on the second display unit 26 is enlarged as the vehicle 12 approaches. On the other hand, as the preceding vehicle approaches the vehicle 12, the display magnification of the object mark display V1 relative to the width of the lane display L is reduced (see FIG. 2 ). Figure 5 ). Therefore, although the object marker display V1 is gradually enlarged as the preceding vehicle approaches the vehicle 12, the size of the object marker display V1 relative to the lane display L is reduced compared to the size of the preceding vehicle relative to the actual lane. Thus, even when the distance D between the preceding vehicle and the vehicle 12 is close, the object marker display V1 is displayed on the inner side of the lane display L in a size that does not overlap with the lane display L. By adjusting the object marker display V1 so that it is displayed on the inner side of the lane display L, it is possible to suppress the size of the object marker display V1 from being excessively enlarged relative to the size of the display area of ​​the second display unit 26. In addition, by displaying the object marker display V1 so that it does not overlap with the lane display L, the shape of the road ahead of the vehicle can be known.

[0100] In addition, in the present embodiment, when it is detected that the vehicle 12 is changing lanes, the display magnification of the object marker display V1 relative to the width of the lane display L is fixed to a predetermined value. That is, the display magnification of the object marker display V1 is fixed to a predetermined value regardless of the distance between the vehicle 12 and the preceding vehicle. Therefore, for example, even when the preceding vehicle is traveling at a position less than the first distance D1 from the vehicle 12, the process of reducing the display magnification of the object marker display V1 is temporarily suspended in the second display unit 26, and the object marker display V1 is displayed at a predetermined display magnification relative to the width of the lane display L. At this time, the display magnification of the object marker display V1 is fixed to 100% as an example. That is, the display magnification of the object marker display V1 relative to the width of the lane display L is equal to the magnification of the size occupied by the preceding vehicle in the width direction relative to the actual width of the lane.

[0101] Here, Figure 7 With the above Figure 6 Similarly, an example of the display of the second display unit 26 when the vehicle 12 changes lanes when the distance between the vehicle 12 and the preceding vehicle is 10 m is shown. As shown in the figure, since the display magnification of the object indicator V1 is fixed to 100%, even if the distance D between the preceding vehicle and the vehicle 12 is the same, Figure 6 The object marker display V1 is also displayed larger. In this state, the object marker display V1 is enlarged so that a part of it is overlapped on the lane display L, and the object marker display V1 is displayed with priority over the lane display. In this way, when changing lanes, the object marker display V1 corresponding to the preceding vehicle traveling near the vehicle 12 is enlarged and displayed with priority. This can promote the attention of the occupants.

[0102] (effect)

[0103] Next, the operation of this embodiment will be described.

[0104] (Display Processing)

[0105] use Figure 8 The flowchart shown in the figure explains an example of display processing for causing the second display unit 26 to display the object indicator V1 in response to the start of driving of the vehicle 12. The display processing is performed by the CPU 30 reading a display program from the ROM 32 or the storage 36, developing it in the RAM 34, and executing it.

[0106] like Figure 8As shown, the CPU 30 determines whether the driving of the vehicle 12 has started in step S101. When the vehicle 12 is traveling in automatic driving, the CPU 30 determines whether the driving has started based on the operation plan set by the operation plan setting unit 52 and whether the control implemented by the function of the automatic driving control unit 54 has started. In addition, in the case of manual driving, the CPU 30 determines whether the driving has started, for example, based on whether the ignition switch of the vehicle has been turned on.

[0107] When the CPU 30 determines in step S101 that driving has started, the process proceeds to step S102. When the CPU 30 determines in step S101 that driving has not started, the CPU 30 ends the display process.

[0108] In step S102 , the CPU 30 acquires the surrounding information of the vehicle 12 . Specifically, the CPU 30 acquires information on the width of the road on which the vehicle 12 is traveling, vehicles traveling near the vehicle 12 , obstacles, and the like as the surrounding information based on the function of the acquisition unit 51 .

[0109] In step S103, the CPU 30 determines whether there is a target object in front of the vehicle 12. Specifically, the CPU 30 determines whether there is a preceding vehicle in front of the vehicle 12 based on the surrounding information acquired in step S102.

[0110] When the CPU 30 determines in step S103 that the object mark exists, the CPU 30 proceeds to the process of step S104. When the CPU 30 determines in step S103 that the object mark does not exist, the CPU 30 returns to step S102 and repeats the process.

[0111] In step S104, the CPU 30 executes the object mark display process to display the object mark display V1 on the second display unit 26. The object mark display process will be described in detail later.

[0112] In step S105, the CPU 30 determines whether the driving of the vehicle 12 has ended. When the vehicle 12 is driving in automatic driving, the CPU 30 determines whether the driving of the vehicle 12 has ended based on whether the control implemented based on the function of the automatic driving control unit 54 has ended. In addition, when the vehicle 12 is driving in manual driving, the CPU 30 determines whether the driving of the vehicle 12 has ended, for example, based on whether the ignition switch of the vehicle is turned off.

[0113] When the CPU 30 determines in step S105 that the driving has ended, the display processing ends. When the CPU 30 determines in step S105 that the driving has not ended, the CPU 30 returns to step S102 and repeats the processing.

[0114] (Object display processing)

[0115] Next, refer to Fig. 9 An example of the object mark display process will be described. The object mark display process is performed by the CPU 30 reading a display program from the ROM 32 or the storage 36 , expanding the program in the RAM 34 , and executing the program.

[0116] like Fig. 9 As shown, CPU30 determines whether there is a lane change in step S201. When determining whether there is a lane change, it is possible to determine whether the lane change of the vehicle 12 has started, or it is possible to determine whether the vehicle 12 has started preparing for the lane change. In the present embodiment, CPU30 determines whether the lane change of the vehicle 12 has started. To be specific, when the vehicle 12 is traveling by automatic driving, CPU30 determines whether the vehicle 12 has started the lane change through the function of the automatic driving control unit 54. On the other hand, when the vehicle is traveling by manual driving, the judgment is made based on the function of the acquisition unit 51 and based on the surrounding information of the vehicle 12, and based on whether the lane change has been implemented (whether the vehicle 12 has changed the road).

[0117] In addition, when the vehicle 12 determines whether the lane change preparation has been started, the CPU 30 may also determine whether the lane change preparation has been implemented in the following manner. For example, when the vehicle 12 is traveling in automatic driving, the CPU 30 runs the function of the plan setting unit 52 and determines whether the vehicle 12 has passed a point where the distance to the target point of the lane change is within a predetermined distance. In addition, when the vehicle 12 is traveling in manual driving, the CPU 30 determines whether the driver has operated the direction indicator.

[0118] When the CPU 30 determines in step S201 that a lane change has occurred, the process proceeds to step S202 . When the CPU 30 determines in step S201 that a lane change has not occurred, the process proceeds to step S203 .

[0119] In step S202, the CPU 30 fixes the display magnification of the object mark display V1 relative to the lane display L and displays it on the second display unit 26. Specifically, the display magnification of the object mark display V1 is set to 100%. Figure 7As shown, for the preceding vehicle approaching the vehicle 12 , the object marker display V1 can be enlarged and displayed with priority over the lane display L, thereby being displayed more intensively than the lane display L. When the processing of step S202 is completed, the CPU 30 ends the object marker display processing.

[0120] In step S203 , the CPU 30 determines whether the distance D between the object and the vehicle 12 is smaller than the first distance D1 . Specifically, the CPU 30 determines whether the distance D between the preceding vehicle and the vehicle 12 is smaller than 100 m.

[0121] If the CPU 30 determines in step S203 that the distance D between the object mark and the vehicle 12 is less than the first distance D1, the CPU 30 proceeds to step S204. If the CPU 30 determines in step S203 that the distance D between the object mark and the vehicle 12 is not less than the first distance D1, the CPU 30 proceeds to step S205.

[0122] In step S204, the CPU 30 reduces the display magnification of the object indicator display V1 as the distance between the object indicator and the vehicle 12 decreases, thereby causing the second display unit 26 to display. Figure 5 as well as Figure 6 As shown in FIG. 2 , the display magnification of the object mark V1 is reduced according to the distance D between the preceding vehicle and the vehicle 12 so that the display magnification becomes 60% at the position where the distance D between the preceding vehicle and the vehicle 12 is D=0 m. In this state, the object mark display V1 is displayed inside the lane display L at a position that does not overlap with the lane display L. When the processing of step S204 is completed, the CPU 30 ends the object mark display processing.

[0123] In step S205 , the CPU 30 determines whether the distance D between the object and the vehicle 12 is less than the second distance D2 . Specifically, the CPU 30 determines whether the distance D between the preceding vehicle and the vehicle 12 is less than 115 m.

[0124] When the CPU 30 determines that the distance D between the object mark and the vehicle 12 is less than the second distance D2, the CPU 30 proceeds to step S206. When the CPU 30 determines that the distance D between the object mark and the vehicle 12 is not less than the second distance D2, that is, greater than the second distance D2, the CPU 30 proceeds to step S208.

[0125] In step S206, the CPU 30 fixes the display magnification of the object mark display V1 relative to the lane display L and displays it on the second display unit 26. Specifically, the display magnification of the object mark display V1 is set to 100%. Figure 4As shown, a preceding vehicle that is more than 100 m away from the vehicle 12 is also displayed on the second display unit 26 by an object marker display V1 of a size that is easy for the occupant to understand.

[0126] Then, in step S207, the CPU 30 increases the transmittance of the object mark display V1 as the distance D between the object mark and the vehicle 12 increases. Figure 5 As shown, for a preceding vehicle that is more than 100 m away from the vehicle 12, the CPU 30 increases the transmittance of the object marker display V1 as the distance D from the vehicle 12 increases, thereby reducing the presence. When the CPU 30 completes the process of step S207, the object marker display process ends.

[0127] Meanwhile, in step S208, the CPU 30 deletes the object marker display V1 from the second display unit 26. Specifically, the CPU 30 deletes the object marker display V1 corresponding to the preceding vehicle that is more than 115 m away from the vehicle 12 from the second display unit 26. When the CPU 30 completes the processing in step S208, the object marker display processing ends.

[0128] As described above, in the vehicle display control device 10 according to the present embodiment, the second display unit 26 displays the preceding vehicle in front of the vehicle 12 and the lane extending in front of the vehicle 12 through the object mark display V1 and the lane display L. In addition, the object mark display V1 and the lane display L are respectively displayed from the viewpoint of the preceding vehicle as viewed from the vehicle 12 side (rear side). Thus, the occupant can understand the preceding vehicle and the lane in front of the vehicle from the same viewpoint as the viewpoint from which the scenery in front of the vehicle is viewed from the driver's seat by looking at the second display unit 26.

[0129] In addition, since the display magnification of the object marker display V1 relative to the width of the lane display L is changed according to the distance D between the preceding vehicle and the vehicle, the preceding vehicle can be displayed in a manner that makes it easy to understand the positional relationship with the lane as needed, while showing the sense of distance between the vehicle 12 and the preceding vehicle to the occupants.

[0130] Specifically, if Figure 5 as well as Figure 6As shown, when the distance between the preceding vehicle and the vehicle 12 is less than the first distance D1 (=100 m), the object mark display V1 is displayed in such a manner that the size of the object mark display V1 relative to the width of the lane display L becomes smaller as the distance D between the preceding vehicle and the vehicle 12 becomes shorter. Thus, when the distance D between the preceding vehicle and the vehicle 12 is close, it is possible to suppress the object mark display V1 from being displayed too large relative to the lane display L and causing the occupant viewing the second display unit 26 to feel annoyed. In particular, when the second display unit 26 is composed of the projection surface of the head-up display device 44 as in the present embodiment, the object mark display V1 may be displayed too large on the projection surface, causing the occupant viewing the object mark display V1 to feel dizzy. Therefore, in this regard, in the present embodiment, it is also possible to suppress the occupant viewing the second display unit 26 from feeling annoyed.

[0131] In this state, the object marker display V1 is displayed inside the lane display L at a position that does not overlap with the lane display L. Thus, even when the leading vehicle approaches the vehicle, the lane display L is not excluded by the object marker display V1, so both the leading vehicle of the vehicle 12 and the road shape can be appropriately grasped.

[0132] Furthermore, when the distance D between the preceding vehicle and the vehicle 12 is greater than or equal to the first distance D1 (=100 m) and less than the second distance D2 (=115 m), the display magnification of the object marker display V1 is fixed. Thus, when the distance between the preceding vehicle and the vehicle 12 is sufficiently far, the display magnification of the object marker display V1 is fixed, thereby preventing the object marker display V1 from being displayed too small. As a result, the occupant can appropriately grasp the preceding vehicle that is located in front of the vehicle 12 and at a relatively far distance by viewing the second display unit 26.

[0133] In this state, the structure is such that as the distance between the preceding vehicle and the vehicle 12 increases, the transmittance of the object mark display V1 on the second display unit 26 increases. Thus, the presence of the preceding vehicle that is far away from the vehicle and has a low level of attention to the occupant can be reduced on the second display unit 26. Thus, the occupant can effectively grasp other preceding vehicles with a high level of attention by looking at the second display unit 26.

[0134] In the present embodiment, when the distance between the preceding vehicle and the vehicle 12 increases to the second distance D2 (=115 m) or more, the object marker display V1 is deleted from the second display unit 26 . Therefore, only the minimum necessary information can be displayed on the second display unit 26 .

[0135] Furthermore, in the present embodiment, when the vehicle 12 changes lanes, the display magnification of the object marker display V1 is fixed. Figure 7 As shown, when the preceding vehicle approaches the vehicle 12 and changes lanes, the display magnification can be set so that the object display V1 is displayed more emphatically than other displays such as the lane display L. As a result, when the vehicle 12 changes lanes, it is possible to promote the attention of the occupants.

[0136] In the present embodiment, the object marker display V1 is displayed in a state of being overlapped with the route display R. Thus, the occupant can easily understand the planned travel route of the vehicle 12 and the positional relationship of the preceding vehicle by viewing the second display unit 26 .

[0137] Furthermore, in the present embodiment, since the front display C is displayed at the lower portion of the display area of ​​the second display unit 26, the distance between the preceding vehicle and the (engine) hood of the vehicle 12 can be understood by using the positional relationship between the object marker display V1 and the front display C. Thus, the occupant can intuitively understand the distance between the vehicle 12 and the preceding vehicle by viewing the second display unit 26.

[0138] Furthermore, in this embodiment, since the second display unit 26 is a projection surface disposed on the vehicle front side of the driver's seat and the vehicle upper side of the instrument panel 14, the driving passenger can understand the leading vehicle in front of the vehicle without significantly shifting his or her line of sight.

[0139] [Second Embodiment]

[0140] Below, refer to Figure 10 to Figure 12 Next, a vehicle display control device 100 according to a second embodiment will be described. Components identical to those of the first embodiment described above are denoted by the same reference numerals, and descriptions thereof will be omitted.

[0141] exist Fig.10 , a schematic diagram viewed from above shows the relationship between the change in the display magnification of the object marker display V1 relative to the width of the lane display L and the distance D between the vehicle 12 and the preceding vehicle. In the first embodiment, when the distance D between the preceding vehicle as the object marker and the vehicle 12 is less than the first distance D1 (=100 m), the display magnification of the object marker display V1 is reduced as the distance D between the preceding vehicle and the vehicle 12 is closer. In contrast, in the second embodiment, the display magnification of the object marker display V1 is increased when the distance D between the preceding vehicle and the vehicle 12 is less than the third distance D3 that is shorter than the first distance D1. The other configurations are the same as those of the first embodiment.

[0142] In the present embodiment, the third distance D3 is set to 5 m as an example.

[0143] In this embodiment, using Fig.12 1, an example of the object display processing for causing the second display unit 26 of the vehicle 12 to display the object display V1 will be described with reference to the flowchart shown in FIG. The object display processing is implemented by the CPU 30 reading the display program from the ROM 32 or the storage 36, expanding it in the RAM 34, and executing it. The object display processing of this embodiment also constitutes a part of the display processing similar to that of the first embodiment.

[0144] Fig.12 The processing from step S301 to step S303 is the same as Fig. 9 The processing from step S201 to step S203 is the same.

[0145] In step S304, the CPU 30 determines whether the distance D between the object and the vehicle 12 is less than the third distance D3. Specifically, it determines whether the distance D between the preceding vehicle and the vehicle 12 is less than 5 m.

[0146] If the CPU 30 determines in step S304 that the distance D between the object mark and the vehicle 12 is less than the third distance D3, the CPU 30 proceeds to step S305. If the CPU 30 determines in step S304 that the distance D between the object mark and the vehicle 12 is greater than the third distance D3, the CPU 30 proceeds to step S306.

[0147] In step S305 , the CPU 30 increases the display magnification of the object mark display V1 with respect to the width of the lane display L as the distance D between the object mark and the vehicle 12 decreases.

[0148] Here, in Fig.11 , an example of the display of the second display unit 26 when the distance D between the preceding vehicle and the vehicle 12 is 3 m is shown. In this state, since the display magnification of the object mark display V1 is displayed at a value exceeding 100%, and the object mark display V1 is displayed larger than the width of the lane display L, the state in which the preceding vehicle and the vehicle 12 are suddenly approaching can be intuitively understood.

[0149] because Fig.12 The processing from step S306 to step S310 is the same as Fig. 9 The processing from step S204 to step S208 is the same, so the detailed description is omitted.

[0150] As described above, in the present embodiment, since the structure of the vehicle display control device 10 according to the first embodiment is basically followed, the same operation and effects can be obtained.

[0151] Furthermore, in the present embodiment, when the distance between the preceding vehicle and the vehicle 12 is set to be less than the third distance D3 (=5 m) and the preceding vehicle and the vehicle 12 suddenly approach each other, the display magnification of the object marker display V1 is increased as the distance D between the preceding vehicle and the vehicle 12 is reduced. Therefore, when the preceding vehicle and the vehicle 12 suddenly approach each other, the size of the object marker display V1 is rapidly enlarged relative to the lane display L, and the object marker display V1 is displayed in a more enhanced manner than the lane display L. Thus, the occupant can quickly grasp the preceding vehicle that suddenly approaches the vehicle 12 by viewing the second display unit 26.

[0152] [Supplementary explanation]

[0153] Although the above embodiment is configured such that the display magnification of the object marker display V1 is reduced as the distance D between the object marker and the vehicle 12 is closer (shorter) when the distance D between the object marker and the vehicle 12 is less than the first distance D1, the present invention is not limited thereto. That is, the method of reducing the display magnification of the object marker display V1 is not limited to the case of continuous reduction, and may be a method of reducing the display magnification in stages. For example, the display magnification may be reduced in stages at a predetermined magnification each time the distance D approaches a predetermined distance.

[0154] In addition, the values ​​of the first distance D1, the second distance D2, and the third distance D3 in the above-mentioned respective embodiments are merely examples and can be appropriately changed within the scope of the gist of the invention.

[0155] In addition, various processors other than the CPU can also perform the display processing and object display processing that the CPU reads the software (program) and can perform in the above-mentioned embodiments. As processors in this case, FPGA (Field-Programmable Gate Array) and other PLD (Programmable Logic Device) whose circuit structure can be changed after manufacturing, and ASIC (Application Specific Integrated Circuit) and other processors with circuit structures specially designed for performing specific processing, that is, dedicated circuits, etc. are exemplified. In addition, the display processing and object display processing can be performed by using one of these various processors, or by a combination of two or more processors of the same type or different types (for example, a plurality of FPGAs, and a combination of CPU and FPGA, etc.). In addition, the hardware structure of these various processors is more specifically a circuit that combines circuit elements such as semiconductor elements.

[0156] In addition, although in each of the above-mentioned embodiments, the display processing and the object display processing program are pre-stored (installed) in a ROM or storage device, it is not limited to this. The program can also be provided in the form of being recorded in a recording medium such as a CD-ROM (Compact Disk Read Only Memory), a DVD-ROM (Digital Versatile Disk Read Only Memory), and a USB (Universal Serial Bus) memory. In addition, the program can also be set to be downloaded from an external device via a network.

Claims

1. A display control device for a vehicle, wherein: A display control unit is provided, the display control unit causing a display unit provided in a vehicle compartment to display an object mark display and a lane display, the object mark display being a display showing an object mark existing in front of the vehicle from a viewpoint of the object mark as viewed from the vehicle side, the lane display being a display showing a lane extending in front of the vehicle from a viewpoint of the object mark as viewed from the vehicle side, and the display control unit changing a display magnification of the object mark display relative to a width of the lane display according to a distance between the object mark and the vehicle, The lane display is composed of a first image and a second image that simulate two lines corresponding to lines on both sides of the lane in the width direction of the lane in which the vehicle is traveling, The width between the first image and the second image is constant in the schematic diagram viewed from above, When the distance between the object marker and the vehicle is less than a first distance, the display control unit reduces a display magnification of the object marker relative to a width of the lane display in the schematic view viewed from above as the distance between the object marker and the vehicle decreases.

2. The vehicle display control device according to claim 1, wherein: The display control unit reduces the display magnification as the distance between the object marker and the vehicle decreases so that the object marker is displayed on the display unit at a position that does not overlap with the lane display and is inside the lane display.

3. The vehicle display control device according to claim 1, wherein: The display control unit causes the object marker display to overlap with a route display that displays a planned travel route of a vehicle.

4. The vehicle display control device according to claim 1, wherein: The display control unit fixes a display magnification of the object display relative to a width of the lane display when the vehicle performs a lane change or a lane change preparation.

5. The vehicle display control device according to claim 1, wherein: The display control unit fixes a display magnification of the object marker relative to a width of the lane display when the distance between the object marker and the vehicle is greater than or equal to the first distance and less than a second distance that is longer than the first distance.

6. The vehicle display control device according to claim 5, wherein: When the distance between the object mark and the vehicle is greater than or equal to the first distance and less than the second distance, the display control unit increases the transmittance of the object mark display as the distance between the object mark and the vehicle increases.

7. The vehicle display control device according to claim 5, wherein: The display control unit deletes display of the object marker from the display unit when the distance between the object marker and the vehicle is equal to or greater than the second distance.

8. The vehicle display control device according to claim 1, wherein: The display control unit increases a display magnification of the object marker display relative to a width of the lane display as the distance between the object marker and the vehicle decreases when the distance between the vehicle and the object marker is less than a third distance that is shorter than the first distance.

9. The vehicle display control device according to claim 1, wherein: The display control unit displays a front end display indicating the position of the front end of the vehicle at a lower portion of a display area of ​​the display unit, and displays the lane display and the object marker display on an upper side of the front end display.

10. The vehicle display control device according to any one of claims 1 to 9, wherein: The display unit is provided on the vehicle front side of a driver's seat and is a projection surface projected by a head-up display device on the vehicle upper side of an instrument panel.

11. A display method, comprising causing a display unit disposed in a vehicle compartment to display an object mark display and a lane display, wherein the object mark display is a display in which an object mark existing in front of the vehicle is displayed from a viewpoint of the object mark as viewed from the vehicle side, and the lane display is a display in which a lane extending in front of the vehicle is displayed from a viewpoint of the object mark as viewed from the vehicle side, In the display method, changing a display magnification of the object mark relative to a width of the lane display according to a distance between the object mark and the vehicle; The lane display is composed of a first image and a second image that simulate two lines corresponding to lines on both sides in the width direction of the lane in which the vehicle is traveling, In the schematic diagram observed from a top view, the width between the first image and the second image is set to be constant. When the distance between the object marker and the vehicle is smaller than the first distance, in the schematic view viewed from above, the display magnification of the object marker relative to the width of the lane display is reduced as the distance between the object marker and the vehicle decreases.

12. A storage medium storing a program, The program causes a display unit provided in a vehicle cabin to display an object mark display and a lane display, wherein the object mark display is a display showing an object mark existing in front of the vehicle from a viewpoint of the object mark as viewed from the vehicle side, and the lane display is a display showing a lane extending in front of the vehicle from a viewpoint of the object mark as viewed from the vehicle side, The program causes a computer to execute processing of changing a display magnification of the object mark relative to a width of the lane display according to a distance between the object mark and the vehicle, The lane display is composed of a first image and a second image that simulate two lines corresponding to lines on both sides in the width direction of the lane in which the vehicle is traveling, In the schematic diagram observed from a top view, the width between the first image and the second image is set to be constant. When the distance between the object marker and the vehicle is smaller than the first distance, in the schematic view viewed from above, the display magnification of the object marker relative to the width of the lane display is reduced as the distance between the object marker and the vehicle decreases.

13. A vehicle display system comprising: The vehicle display control device according to claim 1; and A display device includes the display unit provided in a vehicle compartment.

Images