Vehicle speed display device, vehicle speed display method, and vehicle speed display program

Abstract

The invention provides a vehicle speed display device, a vehicle speed display method and a vehicle speed display program. In a vehicle capable of performing vehicle control, a first image indicating a vehicle speed and a vehicle speed display range of the vehicle is generated, a second image indicating a vehicle speed range corresponding to a preset vehicle speed condition related to vehicle control is generated, and the first image and the second image are displayed on a display unit of the vehicle in a manner that the second image is arranged along the first image.

Description

Technical Field

[0001] The present disclosure relates to a vehicle speed display device, a vehicle speed display method, and a vehicle speed display program. Background Art

[0002] Japanese Patent Application Publication No. 2018-118554 discloses a vehicle display device that displays a set value of the driving speed of the vehicle and a speed limit (regulated speed) of the driving road on a display unit during cruise control.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2018-118554 Summary of the invention

[0006] Problems to be solved by the invention

[0007] Preset vehicle speed conditions related to vehicle control including either driving assistance control or automatic driving control are recorded in, for example, a vehicle manual, etc. However, "accurately memorizing the range of vehicle speeds corresponding to the vehicle speed conditions in advance" may be a burden for the driver.

[0008] Technical solutions to solve problems

[0009] One scheme of the present disclosure is a vehicle speed display device, which is provided in a vehicle capable of performing vehicle control, and the vehicle speed display device comprises: a first image generating unit, which generates a first image representing the vehicle speed and a display range of the vehicle speed; a second image generating unit, which generates a second image representing a range of vehicle speeds corresponding to a predetermined vehicle speed condition related to vehicle control; and a display control unit, which displays the first image and the second image on a display unit of the vehicle in a manner such that the second image is configured along the first image.

[0010] According to a vehicle speed display device involved in one embodiment of the present disclosure, the second image is arranged along the first image in the display unit of the vehicle. Therefore, the driver can easily visually confirm the second image together with the first image. Thus, even when the vehicle is running, the driver can easily recognize the range of vehicle speeds corresponding to the vehicle speed condition. As a result, the driver can save the burden of memorizing the range of vehicle speeds corresponding to the vehicle speed condition in advance.

[0011] In one embodiment, the vehicle speed display device may include a surrounding condition acquisition unit for acquiring the surrounding condition of the vehicle, the vehicle control includes one or more functional elements as functions that form elements constituting the automatic driving control, and in the vehicle speed condition for the predetermined functional element, the range of the vehicle speed changes according to the surrounding condition, and the second image generation unit generates the second image by changing the range of the vehicle speed according to the surrounding condition for the same functional element based on the surrounding condition and the vehicle speed condition. In this case, the second image changes in a manner that indicates the range of the vehicle speed corresponding to the surrounding condition, so that even when the vehicle is traveling, the driver can recognize the change in the range of the vehicle speed corresponding to the vehicle speed condition.

[0012] In one embodiment, the vehicle control may include one or more functional elements as functions forming elements constituting the automatic driving control, the second image may include a third image indicating a range of vehicle speeds in which a predetermined functional element becomes effective during the execution of the automatic driving control, and a fourth image indicating a range of vehicle speeds in which a driver of the vehicle is allowed to be in a non-steering holding state or a non-visual confirmation of surrounding conditions during the execution of the automatic driving control, and the display control unit may display the third image and the fourth image on a display unit of the vehicle in such a manner that the third image is arranged on one side of the first image and the fourth image is arranged on the other side of the first image. In this case, part or all of the second image is divided into the third image and the fourth image via the first image and displayed. Thus, it is possible to suppress the driver from confusing the second vehicle speed range represented by the third image and the second vehicle speed range represented by the fourth image in the second image.

[0013] Another embodiment of the present disclosure is a vehicle speed display method, which uses a vehicle speed display device provided on a vehicle capable of performing vehicle control, and the vehicle speed display method includes: a step of generating a first image representing the vehicle speed and a display range of the vehicle speed; a step of generating a second image representing a range of vehicle speeds corresponding to a predetermined vehicle speed condition related to vehicle control; and a step of displaying the first image and the second image on a display unit of the vehicle in a manner such that the second image is configured along the first image.

[0014] According to a vehicle speed display method according to another embodiment of the present disclosure, a second image is arranged along the first image in a display unit of a vehicle. Therefore, the driver can easily visually confirm the second image together with the first image. Thus, even when the vehicle is traveling, the driver can easily recognize the range of vehicle speeds corresponding to the vehicle speed condition. As a result, the driver can save the burden of memorizing the range of vehicle speeds corresponding to the vehicle speed condition in advance.

[0015] Another scheme of the present disclosure is a vehicle speed display program that enables a computer to function as a vehicle speed display device provided in a vehicle capable of performing vehicle control. The vehicle speed display program enables the computer to function as the following parts: a first image generating unit that generates a first image representing the vehicle speed and a display range of the vehicle speed; a second image generating unit that generates a second image representing a range of vehicle speeds corresponding to a predetermined vehicle speed condition related to vehicle control; and a display control unit that displays the first image and the second image on a display unit of the vehicle in a manner that configures the second image along the first image.

[0016] According to a vehicle speed display program according to another embodiment of the present disclosure, a second image is arranged along the first image in a display unit of a vehicle. Therefore, the driver can easily visually confirm the second image together with the first image. Thus, even when the vehicle is traveling, the driver can easily recognize the range of vehicle speeds corresponding to the vehicle speed condition. As a result, the driver can save the burden of memorizing the range of vehicle speeds corresponding to the vehicle speed condition in advance.

[0017] Effects of the Invention

[0018] According to some aspects of the present disclosure, the driver can save the burden of memorizing in advance the range of vehicle speeds corresponding to the vehicle speed conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 1 is a block diagram showing a vehicle including a vehicle speed display device according to an embodiment.

[0020] Figure 2 A diagram showing a first example of a first image and a second image displayed on the display unit.

[0021] Figure 3 It is a diagram showing a second example of the first image and the second image displayed on the display unit.

[0022] Figure 4 It is a diagram showing a third example of the first image and the second image displayed on the display unit.

[0023] Figure 5 It is a diagram showing a fourth example of the first image and the second image displayed on the display unit.

[0024] Figure 6 The diagram shows an example of a first image displayed on the display unit and a second image including a third image and a fourth image.

[0025] Figure 7 This is a flowchart showing an example of vehicle speed display processing. DETAILED DESCRIPTION

[0026] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the following description, the same or corresponding elements are denoted by the same reference numerals, and duplicate descriptions are omitted.

[0027] Figure 1 FIG. 2 is a block diagram showing a vehicle including a vehicle speed display device according to an embodiment. Figure 1 As shown, the vehicle speed display device 100 is provided in a vehicle 1 capable of executing automatic driving control (vehicle control). The vehicle 1 is, for example, a passenger car or the like.

[0028] [Configuration of the autonomous driving system]

[0029] An automatic driving system 2 is mounted on the vehicle 1. The automatic driving system 2 is a system that performs automatic driving control of the vehicle 1. Automatic driving control refers to vehicle control that automatically causes the vehicle 1 to travel along a road on which the vehicle 1 is traveling without requiring a driver to perform a driving operation.

[0030] The automatic driving control that the vehicle 1 can perform includes automatic driving control that requires the driver to confirm the surroundings. "Automatic driving control that requires the driver to confirm the surroundings" corresponds to an automatic driving control of an assistance level (less than level 3) that assigns driving responsibility to the driver. "Require the driver to confirm the surroundings" means that "non-visual confirmation of the surrounding state" is not allowed. "Non-visual confirmation of the surrounding state" is equivalent to a state in which the driver does not perform a predetermined surrounding confirmation action (so-called eyes-off). "Non-visual confirmation of the surrounding state" may also be a state in which the driver's facial orientation or line of sight direction exceeds a predetermined limit time and leaves a predetermined surrounding confirmation range. The driver's facial orientation or line of sight direction can be calculated, for example, based on an image captured by a driver monitoring camera.

[0031] In the automatic driving control that requires the driver to confirm the surroundings (requires the driver to confirm the surroundings), the driver of the vehicle 1 may be allowed to temporarily be in a non-steering state. "Non-steering state" means a state in which the driver does not perform a predetermined steering action (so-called hands-off). "Temporary non-steering state" may also be a state in which the driver does not hold the steering wheel of the vehicle 1 within a range not exceeding a predetermined allowable time. Steering holding of the steering wheel may be identified based on the detection result of a touch sensor or the like provided on the steering wheel of the vehicle 1, for example.

[0032] The automatic driving control that can be performed by the vehicle 1 may also include automatic driving control that does not require the driver to confirm the surroundings. Automatic driving control that does not require the driver to confirm the surroundings corresponds to automatic driving control of an assistance level (level 3 or above) that does not assign driving responsibility to the driver. "Not requiring the driver to confirm the surroundings" means that so-called eyes-off is allowed. In the level 3 automatic driving control here, the automatic driving control that does not require the driver to confirm the surroundings can also be performed only in a predetermined low vehicle speed range.

[0033] The automatic driving system 2 includes an automatic driving ECU [Electronic Control Unit] 20 , an external sensor 21 , a map database 22 , an internal sensor 23 , a GPS [Global Positioning System] receiver 24 , and an actuator 25 .

[0034] The autonomous driving ECU 20 is an electronic control unit having a CPU [Central Processing Unit], a ROM [Read Only Memory], a RAM [Random Access Memory], a CAN [Controller Area Network] communication circuit, etc. The autonomous driving ECU 20 controls the hardware based on the signal output by the CPU to realize the functions of the autonomous driving ECU 20 described later. As an example of a more specific action, the autonomous driving ECU 20 activates the CAN communication circuit to input and output data, stores the input data in the RAM, loads the program stored in the ROM into the RAM, and executes the program loaded into the RAM. The autonomous driving ECU 20 may also be composed of multiple electronic units. Part of the functions of the autonomous driving ECU 20 may also be executed in a server that can communicate with the vehicle 1.

[0035] The external sensor 21 includes at least one of a camera and a radar sensor. The camera is a photographing device that photographs the surrounding conditions of the vehicle 1. The camera is, for example, arranged on the inner side of the front windshield of the vehicle 1 to photograph the front of the vehicle. The radar sensor is a detection device that uses radio waves (such as millimeter waves) or light to detect objects around the vehicle 1. The radar sensor includes, for example, radar (millimeter wave radar) or laser radar [LiDAR: Light Detection and Ranging]. The external sensor 21 sends the captured image and detection information related to the surrounding objects to the automatic driving ECU 20.

[0036] The map database 22 is a database for storing map information. The map database 22 is formed in a recording device such as a HDD (Hard Disk Drive) mounted on the vehicle 1. The map information stored in the map database 22 includes, for example, road location information, road shape information (such as curvature information), intersection and branch intersection location information, etc. The map information may also include so-called high-precision map information about the location and shape of roads, etc., which is more accurate than maps used for navigation.

[0037] The internal sensor 23 is a vehicle-mounted sensor that detects the driving state of the vehicle 1. The internal sensor 23 includes a vehicle speed sensor. The internal sensor 23 may also include an acceleration sensor and a yaw rate sensor. As the vehicle speed sensor, the acceleration sensor, and the yaw rate sensor, known sensors can be used. The internal sensor 23 sends detection information related to the driving state of the vehicle 1 to the automatic driving ECU 20.

[0038] The GPS receiver 24 receives signals from three or more GPS satellites to measure the position of the vehicle 1 (for example, the latitude and longitude of the vehicle 1 ). The GPS receiver 24 transmits the measured position information of the vehicle 1 to the automatic driving ECU 20 .

[0039] The actuator 25 is a device used in the driving control of the vehicle 1, and operates according to the control signal from the automatic driving ECU 20. The actuator 25 includes at least a drive actuator, a brake actuator, and a steering actuator. The drive actuator is, for example, provided in an engine or a motor as a power source, and controls the driving force of the vehicle 1. The brake actuator is, for example, provided in a hydraulic brake system, and controls the braking force applied to the wheels of the vehicle 1. The steering actuator is, for example, an auxiliary motor of an electric power steering system, and controls the steering torque of the vehicle 1.

[0040] The automatic driving ECU 20 is configured to be able to recognize the position of the vehicle 1 on the map, the external environment of the vehicle 1 , and the driving state of the vehicle 1 .

[0041] The automatic driving ECU 20 recognizes the external environment around the vehicle 1 based on the detection information of the external sensor 21. The external environment includes the position of an object relative to the vehicle 1, the relative speed of an object relative to the vehicle 1, and the moving direction of an object relative to the vehicle 1. Objects include moving objects such as other vehicles around the vehicle 1 and stationary objects such as structures around the vehicle 1. The external environment includes the demarcation lines and road shapes recognized by the demarcation line recognition processing from the detection information of the external sensor 21.

[0042] The automatic driving ECU 20 is configured to be able to acquire map information used for vehicle control. The automatic driving ECU 20 acquires the map information from the map database 22. The automatic driving ECU 20 may also acquire the map information from a server that can communicate with the vehicle 1 via a communication network.

[0043] The automatic driving ECU 20 recognizes the driving state of the vehicle 1 based on the detection result of the internal sensor 23. The driving state includes the speed of the vehicle 1. The driving state may also include the acceleration of the vehicle 1 and the yaw rate of the vehicle 1.

[0044] The automatic driving ECU 20 obtains the position of the vehicle 1 on the map based on the position information and map information of the GPS receiver 24. The automatic driving ECU 20 may also recognize the position of the vehicle 1 on the map using SLAM (Simultaneous Localization and Mapping) technology.

[0045] The automatic driving ECU 20 generates a driving plan for the vehicle 1 based on the destination, map information, the position of the vehicle 1 on the map, the external environment, and the driving state (vehicle speed, yaw rate, etc.). The destination may be a destination set by the occupants including the driver, or a destination suggested by the automatic driving system 2.

[0046] The travel path of vehicle 1 is the travel track that vehicle 1, which is traveling under automatic driving control, is scheduled to travel in the future. Based on the destination, the current position of vehicle 1 on the map, and map information, automatic driving ECU 20 calculates the target route (lane-based path) of vehicle 1 to the destination.

[0047] The automatic driving ECU 20 calculates a speed pattern (speed plan) for driving the vehicle 1 along the route. The automatic driving ECU 20 calculates the speed pattern of the vehicle 1 based on the set speed of the automatic driving control set by the occupant, the speed limit (e.g., the legal maximum speed) included in the map information, the position information of the temporary stop line, traffic lights, etc. included in the map information, and the external environment such as the preceding vehicle and pedestrians. The automatic driving ECU 20 generates a driving plan including the route and speed pattern of the vehicle 1 by calculating the route and speed pattern of the vehicle 1.

[0048] Based on the generated travel plan, the automatic driving ECU 20 executes automatic driving control of the vehicle 1. The automatic driving ECU 20 sends a control signal to the actuator 25 to control the vehicle speed and steering angle of the vehicle 1 to execute the automatic driving control.

[0049] One or more vehicle speed conditions are set in advance in the automatic driving control performed by the automatic driving ECU 20. The vehicle speed condition is a condition of a range of vehicle speeds related to the automatic driving control.

[0050] The vehicle speed condition includes a condition for a range of vehicle speeds in which a predetermined functional element becomes effective during the execution of the autonomous driving control. Functional elements refer to functions that form elements constituting the autonomous driving control. The autonomous driving control includes one or more functional elements. The functional elements include, for example, at least one of congestion assistance, lane change assistance, and overtaking assistance. The functional elements may also include at least one of lane tracking assistance, lane keeping control, adaptive cruise control, radar cruise control, and pre-collision safety control. The vehicle speed condition includes a condition for a first vehicle speed range in which automatic lane change (lane change assistance) becomes effective during the execution of the autonomous driving control. The vehicle speed condition includes a condition for a second vehicle speed range in which overtaking advice (overtaking assistance) becomes effective during the execution of the autonomous driving control.

[0051] The vehicle speed condition includes a condition for a range of vehicle speeds for allowing a non-steering state or non-visual confirmation of surrounding conditions by the driver of vehicle 1 during the execution of the automatic driving control. As an example, the vehicle speed condition includes a condition for a third vehicle speed range for temporarily allowing a non-steering state (so-called hands-off) during the execution of the automatic driving control. The vehicle speed condition of the third vehicle speed range may be a condition during the execution of the automatic driving control with an assistance level less than level 3. The vehicle speed condition includes a condition for a fourth vehicle speed range for allowing non-visual confirmation of surrounding conditions (so-called eyes-off) during the execution of the automatic driving control. The vehicle speed condition of the fourth vehicle speed range may be a condition during the execution of the automatic driving control with an assistance level of level 3.

[0052] The vehicle speed condition may include a condition of a vehicle speed range for making the automatic driving control itself unusable. As an example, the vehicle speed condition includes a condition of a fifth vehicle speed range for making the automatic driving control itself unusable.

[0053] The automatic driving ECU 20 determines whether the speed condition is satisfied based on the speed of the vehicle 1 and each speed condition. For example, when the speed of the vehicle 1 is included in the first speed range, the automatic driving ECU 20 determines that the speed condition of the first speed range is satisfied, and the automatic lane change in the execution of the automatic driving control becomes effective. When the speed of the vehicle 1 is included in the second speed range, the automatic driving ECU 20 determines that the speed condition of the second speed range is satisfied, and the overtaking advice in the execution of the automatic driving control becomes effective. When the speed of the vehicle 1 is included in the third speed range during the execution of the automatic driving control with an assistance level lower than level 3, the automatic driving ECU 20 determines that the speed condition of the third speed range is satisfied, and allows a temporary non-steering holding state. When the speed of the vehicle 1 is included in the fourth speed range during the execution of the automatic driving control with an assistance level of level 3, the automatic driving ECU 20 determines that the speed condition of the fourth speed range is satisfied, and allows non-visual confirmation of the surrounding state. When the vehicle speed of the vehicle 1 is within the fifth vehicle speed range, the automatic driving ECU 20 determines that the vehicle speed condition of the fifth vehicle speed range is satisfied, and disables the automatic driving control itself.

[0054] Regarding the predetermined functional elements, the range of the vehicle speed of the vehicle speed condition may also change according to the surrounding conditions. As the surrounding conditions here, for example, the road shape of the road on which the vehicle 1 is traveling can be cited. As an example, in the vehicle speed condition regarding the automatic lane change in the execution of the automatic driving control, as the surrounding conditions, the first vehicle speed range may change according to whether the vehicle 1 is traveling on a curve. In the vehicle speed condition regarding the overtaking suggestion in the execution of the automatic driving control, as the surrounding conditions, the second vehicle speed range may change according to whether the vehicle 1 is traveling on a curve. In the vehicle speed condition regarding whether the automatic driving control itself is usable, as the surrounding conditions, the fifth vehicle speed range may change according to whether the vehicle 1 is traveling on a curve. The surrounding conditions are not limited to the road shape of the road on which the vehicle 1 is traveling.

[0055] [Configuration of vehicle speed display device]

[0056] Next, the configuration of the vehicle speed display device 100 involved in the present embodiment is described. The vehicle speed display device 100 is a device that displays an image related to the vehicle speed of the vehicle 1. The vehicle speed display device 100 is mainly composed of a display control ECU 10 mounted on the vehicle 1, a setting input unit 15, and a display (display unit) 16. The vehicle speed display device 100 may also include an external sensor 21 for obtaining the surrounding conditions of the vehicle 1, and an internal sensor 23 for obtaining the vehicle speed of the vehicle 1.

[0057] The display control ECU 10 is an electronic control unit (computer) having a CPU, ROM, RAM, and a CAN communication circuit. The display control ECU 10 controls the display 16. The display control ECU 10 may also be an electronic control unit built into the display 16. The display control ECU 10 may also be a part of the automatic driving ECU 20. The display control ECU 10 may also be composed of a plurality of electronic units. The display control ECU 10 is connected to the automatic driving ECU 20 so as to be able to communicate with it, for example. A part of the functions of the display control ECU 10 may also be executed in a server that can communicate with the vehicle 1.

[0058] The setting input unit 15 is a device that receives setting input from an occupant of the vehicle 1. Setting input means input of settings for an image related to the vehicle speed of the vehicle 1 displayed on the display 16. The setting input will be described in detail later.

[0059] As the setting input unit 15, for example, an input unit of an HMI (Human Machine Interface) provided in the vehicle 1 (e.g., a touch panel display, buttons, etc. of a vehicle navigation device) can be used. The setting input unit 15 accepts the operation of the passenger for setting input. The setting input unit 15 sends the information of the accepted setting input of the passenger to the display control ECU 10.

[0060] The display 16 is mounted on the vehicle 1 and is a display for displaying images to the driver. The images are displayed in a predetermined display area of ​​the display 16. The display 16 is controlled by the display control ECU 10 to display the images in the display area. As the display 16, a display capable of changing the size, shape, brightness, color, etc. of the graphics is used.

[0061] As an example of the display 16, a liquid crystal display (so-called multi-information display [MID]) provided in front of the driver of the instrument panel is used. In addition, a head-up display [HUD] or a liquid crystal display of a navigation system may be used as the display 16. The head-up display is a display device that projects an image from a projection unit provided in the instrument panel of the vehicle 1 to a display surface of the windshield (a reflective surface on the inner side of the windshield).

[0062] Next, the functions of the display control ECU 10 will be described. Figure 1 As shown, the display control ECU 10 includes an information acquisition unit (surrounding condition acquisition unit) 11 , a first image generation unit 12 , a second image generation unit 13 , and a display control unit 14 as functional structures.

[0063] The information acquisition unit 11 acquires the vehicle speed of the vehicle 1 in order to display it on the display 16. Here, the information acquisition unit 11 can acquire the vehicle speed of the vehicle 1 using the recognition result of the automatic driving ECU 20.

[0064] The information acquisition unit 11 acquires the surrounding conditions of the vehicle 1. As the surrounding conditions, for example, the road shape of the road on which the vehicle 1 is traveling can be cited. The surrounding conditions include, for example, whether the road on which the vehicle 1 is traveling is a curve or a straight road. The information acquisition unit 11 can also acquire the surrounding conditions of the vehicle 1 based on the vehicle position and map information of the vehicle 1. The information acquisition unit 11 can also acquire the surrounding conditions of the vehicle 1 based on the external environment of the vehicle 1. The information acquisition unit 11 here can use the recognition result of the automatic driving ECU 20 to acquire the vehicle position, map information, and external environment of the vehicle 1. For example, when the vehicle position of the vehicle 1 exists in the range of the curve on the map, the information acquisition unit 11 determines that the vehicle 1 is traveling on a curve. For example, when the demarcation line and the road shape identified by the demarcation line recognition process are curves, the information acquisition unit 11 determines that the vehicle 1 is traveling on a curve.

[0065] The first image generating unit 12 generates a first image showing the vehicle speed of the vehicle 1 and the display range of the vehicle speed. The first image corresponds to an image of a portion of the speedometer image of the vehicle 1 showing the current vehicle speed of the vehicle 1. The display range of the vehicle speed is a predetermined speed range set in advance. The display range of the vehicle speed is, for example, a speed range of 0 km / h or more and 180 km / h or less.

[0066] The second image generation unit 13 generates a second image representing a range of vehicle speeds corresponding to the vehicle speed condition. The second image corresponds to an image used to compare whether the current vehicle speed of the vehicle 1 belongs to the range of vehicle speeds corresponding to the vehicle speed condition in the speed meter image of the vehicle 1. The second image generation unit 13 generates a range of vehicle speeds corresponding to the vehicle speed condition applicable at the current position on the map where the vehicle 1 is located as the second image. That is, the second image corresponds to the range of vehicle speeds corresponding to the real-time vehicle speed condition.

[0067] The display control unit 14 displays the first image and the second image on the display 16 of the vehicle 1 in such a manner that the second image is arranged along the first image. The first image and the second image are linked in such a manner that the vehicle speed range in which the function of the currently provided automatic driving control can be used is indicated. The display control unit 14 may also display the first image and the second image on the display 16 of the vehicle 1 in such a manner that the second image is arranged along the first image with another second image interposed therebetween.

[0068] Figure 2 A diagram showing a first example of a first image and a second image displayed on the display unit. Figure 2, a speed meter image 30 of a vehicle 1 is illustrated. Figure 2 As shown, the speedometer image 30 is an image of a speedometer of a type that indicates the vehicle speed of the vehicle 1 with the tip of a needle 31 .

[0069] The speedometer image 30 has a pointer 31 that rotates around a predetermined point 33, and an arc portion 32 centered around the point 33. The pointer 31 is the first image indicating the speed of the vehicle 1. The arc portion 32 is the first image indicating the display range of the speed. The arc portion 32 is in the shape of a band of a predetermined width extending along the circumferential direction of a circle centered around the point 33. The arc portion 32 does not extend below the point 33. The arc portion 32 is in the shape of a C that opens toward the bottom of the point 33. Inside the arc portion 32, a plurality of speed values ​​included in the display range of the speed are shown as a reference for explanation. Figure 2 In the example of FIG. 3 , the plurality of vehicle speed values ​​are 0 km / h, 40 km / h, 90 km / h, 140 km / h, and 180 km / h. In the actual speedometer image 30 , for example, the vehicle speed value may be recorded in increments of 10 km / h from 0 km / h to 180 km / h.

[0070] exist Figure 2 In the example, the second image is arc portion 34 to arc portion 38. Arc portion 34 is the second image representing the first vehicle speed range associated with the automatic lane change mentioned above. Inside the arc portion 34, an icon representing a bird's-eye view of a vehicle that means automatic lane change is depicted. Arc portion 34 is in the shape of a strip of predetermined width extending along arc portion 32. Arc portion 34 and arc portion 32 are configured in such a way that the vehicle speed values ​​at adjacent positions are equal to each other. The low-speed side end 34a of the arc portion 34 is adjacent to the arc portion 32 at a position corresponding to the lower limit value of the first vehicle speed range. The high-speed side end 34b of the arc portion 34 is adjacent to the arc portion 32 at a position corresponding to the upper limit value of the first vehicle speed range. The width of the arc portion 34 can be equal to the width of the arc portion 32.

[0071] The arc portion 35 is a second image representing the second vehicle speed range related to the overtaking advice. The arc portion 35 is in the shape of a strip of a predetermined width extending along the arc portion 32 across the arc portion 34. The arc portion 35, the arc portion 34, and the arc portion 32 are arranged so that the vehicle speed values ​​at adjacent positions are equal to each other. The low-speed side end 35a of the arc portion 35 is adjacent to the arc portion 34 at a position corresponding to the lower limit value of the second vehicle speed range. The high-speed side end 35b of the arc portion 35 is adjacent to the arc portion 34 at a position corresponding to the upper limit value of the second vehicle speed range.

[0072] The width of the arc portion 35 is smaller than the width of the arc portion 34. That is, the width of the arc portion 34 located near the arc portion 32 may be larger than the width of the arc portion 35. “The width of the arc portion 34 located near the arc portion 32 is larger than the width of the arc portion 35” may mean that “the ‘automatic lane change’ of the arc portion 34 is more important in display to the driver than the ‘overtaking suggestion’ of the arc portion 35.”

[0073] The low-speed side end 35a of the arc portion 35 is located at a higher vehicle speed side than the low-speed side end 34a of the arc portion 34. The high-speed side end 35b of the arc portion 35 is located at a lower vehicle speed side than the high-speed side end 34b of the arc portion 34. The arc portion 34 located near the arc portion 32 has a larger circumferential extension length than the arc portion 35. The first vehicle speed range of the arc portion 34 located near the arc portion 32 can have a wider vehicle speed range than the second vehicle speed range of the arc portion 35.

[0074] The arc portion 36 is a second image representing the third vehicle speed range associated with the temporary non-steering holding state (hands-off). Inside the arc portion 36, an icon of a steering wheel representing the temporary non-steering holding state is depicted. The arc portion 36 is in the shape of a strip of a predetermined width extending along the arc portion 32 via the arc portion 34 and the arc portion 35. The arc portion 36, the arc portion 34, the arc portion 35, and the arc portion 32 are arranged so that the vehicle speed values ​​at adjacent positions are equal to each other. The low-speed side end 36a of the arc portion 36 is adjacent to the arc portion 35 at a position corresponding to the lower limit value of the third vehicle speed range. The high-speed side end 36b of the arc portion 36 is adjacent to the arc portion 35 at a position corresponding to the upper limit value of the third vehicle speed range.

[0075] The width of the arc portion 36 is equal to the width of the arc portion 35 and smaller than the width of the arc portion 34 .

[0076] The low speed side end 36a of the arc portion 36 is located at a higher vehicle speed side than the low speed side end 35a of the arc portion 35. The high speed side end 36b of the arc portion 36 is located at a lower vehicle speed side than the high speed side end 35b of the arc portion 35. The arc portion 35 located near the arc portion 32 has a larger circumferential extension length than the arc portion 36. The second vehicle speed range of the arc portion 35 located near the arc portion 32 can have a wider vehicle speed range than the third vehicle speed range of the arc portion 36.

[0077] The arc portion 37 is a second image representing the fourth vehicle speed range related to the non-visual confirmation of the surrounding state (eye loss) mentioned above. The arc portion 37 is in the shape of a strip of a predetermined width extending along the arc portion 32. The arc portion 37 and the arc portion 32 are arranged in such a manner that the vehicle speed values ​​at adjacent positions are equal to each other. The low-speed side end 37a of the arc portion 37 is adjacent to the arc portion 32 at a position corresponding to the lower limit value of the fourth vehicle speed range. The high-speed side end 37b of the arc portion 37 is adjacent to the arc portion 32 at a position corresponding to the upper limit value of the fourth vehicle speed range. The high-speed side end 37b of the arc portion 37 is located at a position closer to the low vehicle speed side than the low-speed side end 34a of the arc portion 34. The arc portion 37 extends along the arc portion 32 at a position closer to the low vehicle speed side than the arc portion 34. The width of the arc portion 37 can be equal to the width of the arc portion 32.

[0078] The arc portion 38 is a second image representing the fifth vehicle speed range related to the above-mentioned "unusable automatic driving control itself". The arc portion 38 is in the shape of a strip of a predetermined width extending along the arc portion 32. The arc portion 38 and the arc portion 32 are arranged in such a manner that the vehicle speed values ​​at adjacent positions are equal to each other. The low-speed side end 38a of the arc portion 38 is adjacent to the arc portion 32 at a position corresponding to the lower limit value of the fifth vehicle speed range. The high-speed side end 38b of the arc portion 38 is adjacent to the arc portion 32 at a position corresponding to the upper limit value of the fifth vehicle speed range. The low-speed side end 38a of the arc portion 38 is located at a position closer to the high-speed side than the high-speed side end 34b of the arc portion 34. The arc portion 38 extends along the arc portion 32 at a position closer to the high-speed side than the arc portion 34. The width of the arc portion 38 can be equal to the width of the arc portion 32.

[0079] The second image generation unit 13 may generate the second image by changing the range of the vehicle speed according to the surrounding conditions for the same functional element based on the surrounding conditions and the vehicle speed condition. "Changing the range of the vehicle speed according to the surrounding conditions" means that, for example, the range of the vehicle speed of the vehicle speed condition may change according to restrictions based on the road shape (e.g., curve), terrain (e.g., slope), weather (e.g., rain or wind), and VICS (registered trademark) information for the same functional element. The change in the range of the vehicle speed of the vehicle speed condition may also be a content pre-set in the automatic driving ECU 20.

[0080] Figure 3 It is a diagram showing a second example of the first image and the second image displayed on the display unit. Figure 3 In the example, for example, Figure 2 When the state is set to "the vehicle 1 is traveling on a straight road", the speed meter image 30 of the vehicle 1 changes to the case where the vehicle 1 is traveling on a curve. When the range of the vehicle speed condition changes according to the surrounding conditions of the vehicle 1, such as Figure 3As shown, the vehicle speed range of the vehicle speed condition may change in real time.

[0081] exist Figure 3 In the example of FIG. 1 , the “third vehicle speed range associated with a temporary non-steering state (hands-off)” and the “fourth vehicle speed range associated with a non-visual confirmation state (eyes-off)” have not changed compared to the period when the vehicle 1 was traveling on a straight road. The “second image representing the arc portion 36” and the “second image representing the arc portion 37” are the same as those in FIG. Figure 2 Compared to no change.

[0082] The "second speed range associated with overtaking advice" is changed from the second speed range during the straight road driving of the vehicle 1. The upper limit of the second speed range is reduced to be equal to the upper limit of the third speed range associated with hands-off. The lower limit of the second speed range is increased in a manner close to the lower limit of the third speed range associated with hands-off. The second image representing the arc portion 35 is changed in accordance with the change of the upper limit and the lower limit. Figure 2 Compared to that, there has been a change.

[0083] The "first speed range associated with automatic lane change" is changed from the second speed range during the vehicle 1 traveling on a straight road. The upper limit of the first speed range is reduced so as to approach the upper limit of the second speed range associated with overtaking advice. The lower limit of the first speed range is increased so as to approach the lower limit of the second speed range associated with overtaking advice. The second image representing the arc portion 34 is changed in accordance with the change of the upper limit and the lower limit. Figure 2 Compared to that, there has been a change.

[0084] The "fifth speed range related to the disabling of the automatic driving control itself" has changed compared to the second speed range during the vehicle 1 traveling on a straight road. The "upper limit value of the fifth speed range" has not changed compared to the vehicle 1 traveling on a straight road. The lower limit value of the fifth speed range has decreased in a manner close to the upper limit value of the first speed range related to the automatic lane change. The "second image representing the arc portion 38" has changed in accordance with the changes in the upper limit value and the lower limit value. Figure 2 Compared to that, there has been a change.

[0085] The second image generating unit 13 may also determine a second image not to be displayed on the display 16 among the plurality of second images based on a setting input by an occupant of the vehicle 1 or pre-stored setting mode information. The occupant of the vehicle 1 can arbitrarily customize the type of the second image displayed on the display 16 by setting input. The setting mode information is mode information that pre-sets whether to display on the display 16 according to the importance of the plurality of second images when the vehicle speed display device 100 is designed.

[0086] The second image generating unit 13 may switch the display or non-display of the second image according to the surrounding conditions. The surrounding conditions here may be, for example, the current conditions of the weather and other vehicles around the vehicle 1. The second image generating unit 13 may change the importance (degree of importance) of the second image displayed to the driver according to the surrounding conditions. For example, when the weather is rainy, the second image generating unit 13 may change the importance of the second image by displaying the arc portion 34 related to the automatic lane change and not displaying the arc portion 35 related to the overtaking advice and the arc portion 36 related to the temporary non-steering state (hands-off). For example, when the vehicle 1 is at a low speed but the current conditions around the vehicle 1 cannot omit the surrounding confirmation, the second image generating unit 13 may change the importance of the second image by not displaying the arc portion 37 related to the non-visual confirmation of the surrounding state (eyes off). "The situation where the surrounding confirmation cannot be omitted" refers to, for example, the situation where the number of other vehicles is large compared to the normal situation determined based on the past road conditions and the situation where other obstacles (such as road construction) are newly present. The importance of the second image may also be weighted according to the surrounding conditions. For example, even in the same surrounding conditions, the arc portion 36 related to the temporary non-steering state (hands-off) and the arc portion 37 related to the non-visual confirmation of the surrounding state (eyes-off) may be given a greater weight than the arc portion 34 related to the automatic lane change and the arc portion 35 related to the overtaking advice, so that they are easily "not displayed" on the display 16.

[0087] Figure 4 It is a diagram showing a third example of the first image and the second image displayed on the display unit. Figure 4 For example, in Figure 2 The second image other than the arc portion 34 and the arc portion 38 is not displayed on the display 16, and the speed meter image 30 of the vehicle 1 is displayed. Figure 4 In the example, for example, in response to rainy weather or in response to a setting input by an occupant of the vehicle 1 , the second image other than the arc portion 34 and the arc portion 38 is not displayed.

[0088] As the speedometer image 30, the first image generating unit 12 and the second image generating unit 13 may be different from Figure 2 to Figure 4 In the example of a circle, a speedometer image 40 in which the vehicle speed is marked with a straight line is generated. Figure 5 It is a diagram showing a fourth example of the first image and the second image displayed on the display unit. Figure 5 In FIG. 4 , a bar graph 41 extending in a predetermined direction as a longitudinal direction is depicted. The predetermined direction may correspond to, for example, the vehicle width direction of the vehicle 1 in the display 16 in a state where the display 16 is installed on the vehicle 1. Figure 5As shown, the bar graph 41 has an outer frame 42 and a value display 43. The outer frame 42 is a rectangle along the above-mentioned longitudinal direction. The value display 43 is a rectangle along the above-mentioned longitudinal direction, and is drawn in the outer frame 42 in a left-aligned manner with respect to the paper surface of the figure. The value display 43 can have a different color or pattern from the inner part of the outer frame 42, for example.

[0089] The outer frame 42 and the value display 43 are, for example, images showing the vehicle speed with the left end of the outer frame 42 as the origin on the paper surface of the figure. The position of the outer frame 42 and the position of the right end of the value display 43 are located to the right on the paper surface, indicating a higher vehicle speed. The length direction of the outer frame 42 indicates the display range of the vehicle speed. The outer frame 42 and the value display 43 are the first images showing the vehicle speed and the display range of the vehicle speed.

[0090] At the upper side of the paper surface of the orientation diagram of the outer frame 42 and the value display 43, bands 44 to 48 corresponding to the arcs 34 to 38 are arranged and displayed. The band 44 is a second image representing the first vehicle speed range related to the automatic lane change mentioned above. The band 45 is a second image representing the second vehicle speed range related to the overtaking advice mentioned above. The band 46 is a second image representing the third vehicle speed range related to the temporary non-steering state (hands-off). The band 47 is a second image representing the fourth vehicle speed range related to the non-visual confirmation of the surrounding state (eyes off) mentioned above. The band 48 is a second image representing the fifth vehicle speed range related to the non-usability of the automatic driving control itself. The display control unit 14 causes the display 16 of the vehicle 1 to display the outer frame 42, the value display 43, and the bands 44 to 48 in a manner that the bands 44 to 48 are arranged along the outer frame 42 and the value display 43.

[0091] The second image may also include a third image indicating a range of vehicle speeds at which a predetermined functional element becomes effective during the execution of the automatic driving control, and a fourth image indicating a range of vehicle speeds at which the driver of the vehicle is allowed to be in a non-steering state or non-visually confirm the surrounding state during the execution of the automatic driving control. The display control unit 14 may cause the display 16 of the vehicle 1 to display the third image and the fourth image in such a manner that the third image is arranged on one side of the first image and the fourth image is arranged on the other side of the first image across the first image. Figure 6 The diagram shows an example of a first image displayed on the display unit and a second image including a third image and a fourth image.

[0092] exist Figure 6In the example of , band 44 is a third image indicating a range of vehicle speeds at which automatic lane change becomes effective during the execution of the automatic driving control. Band 45 is a third image indicating a range of vehicle speeds at which overtaking advice becomes effective during the execution of the automatic driving control. Band 46 is a fourth image indicating a range of vehicle speeds at which a temporary non-steering state (hands-off) is allowed for the driver of the vehicle 1 during the execution of the automatic driving control. Band 47 is a fourth image indicating a range of vehicle speeds at which a non-visual confirmation of the surrounding state (eyes-off) is allowed for the driver of the vehicle 1 during the execution of the automatic driving control. By displaying band 44 and band 45 on one side (upper side toward the paper surface of the figure) of the outer frame 42 and the value display 43, the driver of the vehicle 1 can easily recognize the range of vehicle speeds related to the action of the automatic driving control. By displaying bands 46 to 48 on the other side (lower side toward the paper surface of the figure) of the outer frame 42 and the value display 43, the driver of the vehicle 1 can easily recognize the range of vehicle speeds related to the driver's actions and operations with respect to the automatic driving control.

[0093] [Processing of vehicle speed display device, vehicle speed display method and vehicle speed display program]

[0094] Next, refer to Figure 7 An example of the processing of the vehicle speed display device 100 is described with reference to the flowchart of FIG. Figure 7 This is a flowchart showing an example of vehicle speed display processing (vehicle speed display method). Figure 7 The processing (steps) shown are repeatedly executed every predetermined calculation cycle, for example, when the main power supply of the vehicle 1 is turned on.

[0095] like Figure 7 As shown, in S01, the display control ECU 10 of the vehicle speed display device 100 acquires the vehicle speed through the information acquisition unit 11. The information acquisition unit 11 acquires the vehicle speed of the vehicle 1 using the recognition result of the automatic driving ECU 20 based on the detection result of the internal sensor 23, for example.

[0096] In S02, the display control ECU 10 acquires the surrounding conditions through the information acquisition unit 11. The information acquisition unit 11 acquires the surrounding conditions of the vehicle 1 based on, for example, the vehicle position and map information of the vehicle 1. The information acquisition unit 11 may also acquire the surrounding conditions of the vehicle 1 based on the external environment of the vehicle 1. The information acquisition unit 11 may acquire the vehicle position, map information, and external environment of the vehicle 1 using, for example, the detection results of the external sensor 21, the map information of the map database 22, and the recognition results of the automatic driving ECU 20 based on the reception results of the GPS receiver 24.

[0097] In S03, the display control ECU 10 generates a first image through the first image generating unit 12. The first image generating unit 12 generates an image of a portion of the speedometer image of the vehicle 1 that indicates the current vehicle speed of the vehicle 1. The first image generating unit 12 generates, for example, Figure 2 to Figure 4 The speedometer image 30 includes a pointer 31 rotating around a predetermined point 33 and an arc portion 32 centered around the point 33. The first image generating unit 12 may generate the speedometer image 40 as shown in FIG. Figure 5 and Figure 6 Such a bar graph 41 has an outer frame 42 and a value display 43 .

[0098] In S04, the display control ECU 10 generates the second image through the second image generating unit 13. The second image generating unit 13 obtains the vehicle speed condition and generates an image in the speedometer image of the vehicle 1 for comparing whether the current vehicle speed of the vehicle 1 falls within the vehicle speed range corresponding to the vehicle speed condition. The second image generating unit 13 generates, for example, Figure 2 The second image generating unit 13 may also be configured as follows, for example: Figure 3 In this way, based on the surrounding conditions and vehicle speed conditions of the vehicle 1, the second image is generated by changing the range of the vehicle speed according to the surrounding conditions for the same functional element. The second image generating unit 13 may also be configured as follows, for example Figure 4 The second image generation unit 13 may also determine the second image not to be displayed on the display 16 among the plurality of second images based on the setting input of the occupant of the vehicle 1 or the setting mode information stored in advance. The second image generation unit 13 may also generate, for example, Figure 5 and Figure 6 Such belt portion 44 to belt portion 48.

[0099] In S05, the display control ECU 10 displays the first image and the second image through the display control unit 14. The display control unit 14 may be, for example, Figure 2 to Figure 5 In this way, the display 16 of the vehicle 1 displays the first image and the second image in such a manner that the second image is arranged along the first image. The display control unit 14 may also be configured as follows, for example Figure 6 In this way, the display 16 of the vehicle 1 displays the third image and the fourth image in such a manner that the third image is arranged on one side of the first image and the fourth image is arranged on the other side of the first image. Thereafter, the display control ECU 10 ends Figure 7 processing.

[0100] [Speed ​​display program]

[0101] The vehicle speed display program enables the display control ECU 10 to function (operate) as the above-mentioned information acquisition unit 11, the first image generation unit 12, the second image generation unit 13, and the display control unit 14. The vehicle speed display program is provided by a non-transient recording medium such as a ROM or a semiconductor memory. In addition, the vehicle speed display program can also be provided via communication such as a network.

[0102] According to the vehicle speed display device 100, the vehicle speed display method, and the vehicle speed display program described above, the second image is arranged along the first image in the display 16 of the vehicle 1, so the driver can easily visually confirm the second image together with the first image. As a result, the driver can easily recognize the range of vehicle speeds corresponding to the vehicle speed condition even when the vehicle 1 is traveling. As a result, the driver can save the burden of memorizing the range of vehicle speeds corresponding to the vehicle speed condition in advance.

[0103] In the vehicle speed display device 100, the vehicle speed display method, and the vehicle speed display program, the surrounding conditions of the vehicle 1 are obtained. The automatic driving control includes one or more functional elements as functions that form "elements constituting the automatic driving control". In the vehicle speed conditions of the predetermined functional elements, the range of the vehicle speed changes according to the surrounding conditions. Based on the surrounding conditions and the vehicle speed conditions, a second image is generated in such a manner that the range of the vehicle speed changes according to the surrounding conditions for the same functional element. As a result, the second image changes in such a manner as to show the range of the vehicle speed corresponding to the surrounding conditions, so that even if the vehicle 1 is traveling, the driver can recognize the change in the range of the vehicle speed corresponding to the vehicle speed conditions.

[0104] In the vehicle speed display device 100, the vehicle speed display method, and the vehicle speed display program, the automatic driving control includes one or more functional elements as functions that form "elements constituting the automatic driving control". The second image includes a third image indicating a range of vehicle speeds in which a predetermined functional element becomes effective during the execution of the automatic driving control, and a fourth image indicating a range of vehicle speeds in which the driver of the vehicle 1 is allowed to be in a non-steering holding state or a non-visual confirmation of the surrounding state during the execution of the automatic driving control. The third image and the fourth image are displayed on the display 16 of the vehicle 1 in such a manner that the third image is arranged on one side of the first image and the fourth image is arranged on the other side of the first image via the first image. Thus, a part or all of the second image is divided into the third image and the fourth image via the first image and displayed. Thus, it is possible to suppress the driver from confusing the second vehicle speed range represented by the third image and the second vehicle speed range represented by the fourth image in the second image.

[0105] In addition, the driver can adjust the speed of the vehicle 1 in accordance with the speed condition of the functional element that the driver wants to use, for example, by visually confirming the second image together with the first image. If the driver does not understand the functional elements provided corresponding to the speed range, for example, the driver may excessively increase the set speed and the automatic driving may not be used, or the automatic lane change on the curve may not be used, which may cause inconvenience. According to the vehicle speed display device 100, the vehicle speed display method, and the vehicle speed display program, the driver can visually confirm the functional elements provided corresponding to the speed range, so that, for example, when the driver wants to use the hands-free control, he can take measures such as not excessively increasing the set speed.

[0106] As mentioned above, although embodiment of this disclosure was described, this disclosure is not limited to the said embodiment.

[0107] In the above embodiment, the second image is generated in such a way that the range of vehicle speed varies according to the surrounding conditions for the same functional element, but this example is not essential. The range of vehicle speed may not vary according to the surrounding conditions. In this case, Figure 7 The processing of S02 can be omitted.

[0108] In the above embodiment, the speedometer image is exemplified. Figure 2 to Figure 6 , but not limited to them. The second image may also include other functional elements. The first image and the second image may also be generated in shapes other than arc or straight line.

[0109] Figure 3 This is an example of a case where the surrounding condition of the vehicle 1 is "the road shape is a curve", but the present invention is not limited to this example. The surrounding condition may be, for example, a restriction based on terrain, weather, or VICS information. Figure 5 and Figure 6 In the linear speedometer image 40, the second image may be generated so that the range of the vehicle speed is changed according to the surrounding conditions.

[0110] Figure 4 This is an example of the case where the surrounding conditions of vehicle 1 are "the current conditions of weather and other vehicles around vehicle 1", but is not limited to this example. The surrounding conditions may be, for example, restrictions based on road shape, terrain, or VICS information. Figure 5 and Figure 6 In the linear speedometer image 40, the display or non-display of the second image may be switched according to the surrounding conditions.

[0111] Although in the above embodiment, the vehicle speed display device 100 is provided in the vehicle 1 capable of performing automatic driving control, it may also be provided in a vehicle capable of performing driving assistance control. Driving assistance control is a control for assisting the driver's driving operation. Driving assistance control may be a function corresponding to any of the above functional elements (e.g., adaptive cruise control).

Claims

1. A vehicle speed display device, the vehicle speed display device being a device provided in a vehicle capable of performing vehicle control, The vehicle speed display device comprises: a first image generating unit configured to generate a first image indicating a vehicle speed of the vehicle and a display range of the vehicle speed; a second image generating unit that generates a second image representing the range of the vehicle speed corresponding to a preset vehicle speed condition related to the vehicle control; and The display control unit displays the first image and the second image on the display unit of the vehicle such that the second image is arranged along the first image.

2. The vehicle speed display device according to claim 1, A surrounding condition acquisition unit is provided for acquiring the surrounding condition of the vehicle. The vehicle control includes one or more functional elements, wherein the functional elements are functions that constitute the components of the automatic driving control. In the vehicle speed condition regarding the predetermined functional element, the range of the vehicle speed changes according to the surrounding conditions, The second image generating unit generates the second image by changing the range of the vehicle speed according to the surrounding conditions for the same functional element based on the surrounding conditions and the vehicle speed condition.

3. The vehicle speed display device according to claim 1 or 2, The vehicle control includes one or more functional elements as functions forming elements constituting the automatic driving control, The second image includes a third image indicating the range of the vehicle speed in which the predetermined functional element becomes effective during the execution of the automatic driving control, and a fourth image indicating the range of the vehicle speed in which the driver of the vehicle is allowed to be in a non-steering holding state or a non-visual confirmation of the surrounding conditions during the execution of the automatic driving control, The display control unit displays the third image and the fourth image on the display unit of the vehicle so that the third image is arranged on one side of the first image and the fourth image is arranged on the other side of the first image with the first image interposed therebetween.

4. A vehicle speed display method, using a vehicle speed display device provided in a vehicle capable of performing vehicle control, The vehicle speed display method comprises: a step of generating a first image showing a vehicle speed of the vehicle and a display range of the vehicle speed; a step of generating a second image showing a range of the vehicle speed corresponding to a preset vehicle speed condition related to the vehicle control; as well as A step of displaying the first image and the second image on a display unit of the vehicle such that the second image is arranged along the first image.

5. A vehicle speed display program that causes a computer to function as a vehicle speed display device provided in a vehicle capable of executing vehicle control, The vehicle speed display program causes the computer to function as the following: a first image generating unit configured to generate a first image indicating a vehicle speed of the vehicle and a display range of the vehicle speed; a second image generating unit that generates a second image representing the range of the vehicle speed corresponding to a preset vehicle speed condition related to the vehicle control; and The display control unit displays the first image and the second image on the display unit of the vehicle such that the second image is arranged along the first image.

Images