Vehicle control method and display device

Abstract

To prevent an occupant from touching a display installed in a vehicle.SOLUTION: A vehicle includes a transparent display arranged between a rear seat and a front seat, wherein while the occupant on the rear seat boards the vehicle, the transparent display displays a first content, when the occupant on the rear seat gets on / off from the vehicle, the transparent display displays a second content different from the first content, the transparent display displays a message for the occupant on the rear seat in a first display area, in the second content, and the transparent display provides a lighting function in at least a part of a second display area below the first display area, in the second content.SELECTED DRAWING: Figure 3

Description

Technical Field

[0006] , ,

[0001] The present disclosure relates to a vehicle control method and a display device.

Background Art

[0002] It has been considered to install a display inside a vehicle so that a passenger in the rear seat of the vehicle can view an image or the like. If a passenger touches or puts weight on the display, the display may get dirty or damaged. Therefore, it is desirable to prevent the passenger from touching the display as much as possible.

[0003] Patent Document 1 discloses that a touch panel for detecting contact with a display is provided, and when a contact that does not correspond to a normal operation is detected, a predetermined warning is displayed on the display. Patent Document 2 discloses that a person approaching the display is face-recognized by a camera, and when the person is recognized as a warning target person, a predetermined warning is displayed on the display.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Patent Document 1 displays a warning after contact with the display, and cannot prevent contact with the display in advance. In Patent Document 2, a warning is displayed when a person approaches the display. Therefore, in a relatively narrow space such as inside a vehicle where the distance between a passenger and the display is usually close, unnecessary warnings may be displayed. <0​​The purpose of this disclosure is to provide a technology that prevents occupants from touching displays installed inside the vehicle. [Means for solving the problem]

[0007] One aspect of this disclosure is, The first wheel connected to the body, The second wheel connected to the aforementioned vehicle body, The third wheel connected to the aforementioned vehicle body, The vehicle body is equipped with at least a fourth wheel connected to the vehicle body, A vehicle capable of traveling in a predetermined direction using the first wheel, second wheel, third wheel, and fourth wheel, The aforementioned vehicle body is A floor surface and a ceiling surface arranged along the predetermined orientation, A left side section is located on the left side, connecting the floor section and the ceiling section, and oriented in the predetermined direction. A right side section is located on the right side, connecting the floor section and the ceiling section, and aligned with the predetermined orientation. Connecting the floor portion and the ceiling portion, and having a front portion positioned at the front in the predetermined orientation, A rear surface portion is positioned at the rear in the predetermined orientation, connecting the floor portion and the ceiling portion. In the floor portion, at least one front seat is positioned on the front side of the rear portion, In the floor portion, at least one rear seat is positioned on the rear side of the front portion, A transparent display positioned between the rear seat and the front seat is provided. A vehicle control method for the aforementioned vehicle, While the rear-seat occupant is present, the transparent display shows the first content. When the passengers in the rear seats board or alight, the transparent display displays a second content different from the first content. The transparent display, in the second content, displays a message directed to the rear-seat occupant in the first display area. The transparent display provides illumination in the second content in at least a portion of the second display area below the first display area. A vehicle control method is provided.

[0008] One aspect of this disclosure is, The first wheel connected to the body, The second wheel connected to the aforementioned vehicle body, The third wheel connected to the aforementioned vehicle body, The vehicle body is equipped with at least a fourth wheel connected to the vehicle body, A display device configured to be mounted on a vehicle capable of traveling in a predetermined direction using the first, second, third, and fourth wheels, The aforementioned vehicle body is A floor surface and a ceiling surface arranged along the predetermined orientation, A left side section is located on the left side, connecting the floor section and the ceiling section, and oriented in the predetermined direction. A right side section is located on the right side, connecting the floor section and the ceiling section, and aligned with the predetermined orientation. Connecting the floor portion and the ceiling portion, and having a front portion positioned at the front in the predetermined orientation, A rear surface portion is positioned at the rear in the predetermined orientation, connecting the floor portion and the ceiling portion. In the floor portion, at least one front seat is positioned on the front side of the rear portion, In the floor portion, at least one rear seat is positioned on the rear side of the front portion, A transparent display positioned between the rear seat and the front seat is provided, While the rear-seat occupant is present, the transparent display shows the first content. When the passengers in the rear seats board or alight, the transparent display displays a second content different from the first content. The transparent display, in the second content, displays a message directed to the rear-seat occupant in the first display area. The transparent display provides a lighting function in at least a part of a second display area below the first display area in the second content. A display device is provided.

[0009] These general or specific aspects may be implemented in a system, device, method, integrated circuit, computer program, or recording medium, or may be implemented by any combination of a system, device, method, integrated circuit, computer program, and recording medium.

Advantages of the Invention

[0010] According to the present disclosure, it is possible to prevent an occupant from touching a display installed in a vehicle interior.

Brief Description of the Drawings

[0011] [Figure 1] A plan view showing a configuration example of a vehicle according to Embodiment 1, looking down through the vehicle interior from above [Figure 2] A side view showing a configuration example of a vehicle according to Embodiment 1, looking through the vehicle interior from the side [Figure 3] A view showing a configuration example of a vehicle according to Embodiment 1, looking forward from the rear seat in the vehicle interior [Figure 4] A block diagram showing an example of a device included in a vehicle according to Embodiment 1 [Figure 5] A schematic diagram showing an example of a first content according to Embodiment 1 [Figure 6] A schematic diagram showing an image of a predetermined pattern, which is an example of a second content according to Embodiment 1 [Figure 7] A schematic diagram showing an image of a swaying curtain, which is an example of a second content according to Embodiment 1 [Figure 8] A schematic diagram showing an image of a wavy water surface, which is an example of a second content according to Embodiment 1 [Figure 9] A schematic diagram showing an example of an image of a grassland swaying in the wind, which is an example of a second content according to Embodiment 1 [Figure 10]A schematic diagram showing an example of the second content according to Embodiment 1, which is an image of a cactus. [Figure 11] A schematic diagram showing an example of the second content according to Embodiment 1, which is a video of fish swimming underwater. [Figure 12] A schematic diagram showing an example of a video of clouds moving, which is an example of a second content according to Embodiment 1. [Figure 13] A flowchart showing an example of the status determination process according to Embodiment 1. [Figure 14] A flowchart showing an example of process B, a continuation of the process shown in Figure 13. [Figure 15] A flowchart showing an example of the boarding process according to Embodiment 1. [Figure 16] A flowchart showing an example of the disembarkation process according to Embodiment 1. [Modes for carrying out the invention]

[0012] Embodiments of the present disclosure will be described in detail below, with appropriate reference to the drawings. However, unnecessary details may be omitted. For example, detailed explanations of already well-known matters and redundant explanations of substantially identical configurations may be omitted. This is to avoid the following explanation becoming unnecessarily verbose and to facilitate understanding by those skilled in the art. The accompanying drawings and the following explanation are provided to enable those skilled in the art to fully understand the present disclosure and are not intended to limit the subject matter of the claims.

[0013] (Embodiment 1) <Vehicle Configuration>

[0014] Figure 1 is a plan view showing an example configuration of vehicle 1 according to Embodiment 1, with the interior viewed from above. Figure 2 is a side view showing an example configuration of vehicle 1 according to Embodiment 1, with the interior viewed from the side. Figure 3 is a view from the rear seat 22 looking forward, showing an example configuration of vehicle 1 according to Embodiment 1. Next, the configuration of vehicle 1 will be described with reference to Figures 1, 2 and 3.

[0015] For the sake of explanation, as shown in Figures 1 and 2, the overall length of Vehicle 1 is defined as the Y-axis, the width of Vehicle 1 as the X-axis, and the height of Vehicle 1 as the Z-axis. Also for the sake of explanation, the positive Z-axis direction may be referred to as "up," the negative Z-axis direction as "down," the positive Y-axis direction as "forward," the negative Y-axis direction as "backward," the positive X-axis direction as "right," and the negative X-axis direction as "left." These directional expressions are used for the sake of explanation and are not intended to limit the orientation of the structure during actual use.

[0016] Vehicle 1 comprises a body 2 and at least a first wheel 3A, a second wheel 3B, a third wheel 3C, and a fourth wheel 3D connected to the body 2, and is capable of traveling in a predetermined direction (for example, the direction of the Y-axis) using the first wheel 3A, the second wheel 3B, the third wheel 3C, and the fourth wheel 3D. However, Vehicle 1 is not limited to a configuration with four wheels, but may have two or three wheels, or five or more wheels. Furthermore, Vehicle 1 may be a private car, a commercial vehicle, a taxi, a truck, or a bus, etc.

[0017] The vehicle body 2 comprises a floor section 11 and a ceiling section 12 arranged along a predetermined orientation.

[0018] The vehicle body 2 includes a left side section 13 that connects the floor section 11 and the ceiling section 12 and is positioned on the left side in a predetermined direction, and a right side section 14 that connects the floor section 11 and the ceiling section 12 and is positioned on the right side in a predetermined direction.

[0019] The vehicle body 2 comprises a front section 16 that connects the floor section 11 and the ceiling section 12 and is located at the front 15 in a predetermined direction, and a rear section 18 that connects the floor section 11 and the ceiling section 12 and is located at the rear 17 in a predetermined direction.

[0020] The vehicle body 2 includes at least one front seat 21 located on the floor portion 11, positioned on the front portion 16 side of the rear portion 18, and at least one rear seat 22 located on the floor portion 11, positioned on the rear portion 18 side of the front portion 16.

[0021] The front section 16 is equipped with a glass front windshield 4 that allows the front seats 21 to view the outside of the vehicle in a predetermined direction.

[0022] The vehicle body 2 further includes a rectangular transparent display 100 between the rear seat 22 and the front seat 21. The transparent display 100 can change the light transmittance of any area. Examples of the transparent display 100 include organic EL displays or LED displays. For example, the transparent display 100 has a configuration in which a liquid crystal shutter with controllable light transmittance is superimposed on a light-transmitting self-emissive display panel (e.g., an organic EL panel). The transparent display 100 then brings the light transmittance of the liquid crystal shutter corresponding to the area to be made transparent closer to 100%, and brings the light transmittance of the liquid crystal shutter corresponding to the area to be made light-blocking closer to 0%. In this way, the transparent display 100 can make any area closer to transparent or closer to light-blocking.

[0023] When the transparent display 100 is transparent, occupants sitting in the rear seats 22 can see outside the vehicle through the transparent display 100 and the front windshield 4.

[0024] The transparent display 100 is set to play predetermined content. The content may be either moving images or still images. The content may also be interpreted as video. The occupants of the rear seats 22 can view the content displayed on the transparent display 100.

[0025] Vehicle 1 is equipped with an operating unit 102 near the rear seats 22 inside the vehicle. The operating unit 102 may be a tablet terminal installed inside the vehicle. Alternatively, the operating unit 102 may be a smartphone owned by an occupant connected to vehicle 1 by wire or wireless connection. Alternatively, the operating unit 102 may be a remote control for operating the IVI device 114 (see Figure 4).

[0026] The transparent display 100, located between the rear seat 22 and the front seat 21, is at risk of being soiled or damaged if touched by passengers attempting to board or alight from the rear seat 22. Therefore, this embodiment describes a technique for preventing passengers attempting to board or alight from the rear seat 22 from touching the transparent display 100 located between the rear seat 22 and the front seat 21. In the following description, passengers attempting to board or alight from the rear seat 22 will be referred to as rear seat boarding / alighting passengers.

[0027] <Device Configuration> Figure 4 is a block diagram showing an example of a device provided by vehicle 1 according to Embodiment 1. Figure 5 is a schematic diagram showing an example of the first content 301 according to Embodiment 1. Figure 6 is a schematic diagram showing an example of a second content 302 according to Embodiment 1, which is an image of a predetermined pattern. Figure 7 is a schematic diagram showing an example of the second content 302 according to Embodiment 1, which is an image of a swaying curtain. Figure 8 is a schematic diagram showing an example of the second content 302 according to Embodiment 1, which is an image of a water surface with waves. Figure 9 is a schematic diagram showing an example of the second content 302 according to Embodiment 1, which is an image of a grassland swaying in the wind. Figure 10 is a schematic diagram showing an example of the second content 302 according to Embodiment 1, which is an image of a cactus. Figure 11 is a schematic diagram showing an example of the second content 302 according to Embodiment 1, which is an image of a fish swimming underwater. Figure 12 is a schematic diagram showing an example of the second content 302 according to Embodiment 1, which is an image of clouds moving.

[0028] As shown in Figure 4, Vehicle 1 is equipped with a communication device 111, a vehicle control device 112, a seat detection device 113, an IVI device 114, a video control device 115, and a transparent display 100. The communication device 111, the vehicle control device 112, the seat detection device 113, the IVI device 114, and the video control device 115 can send and receive information from each other via the in-vehicle network 110. Examples of the in-vehicle network 110 include Controller Area Network (CAN), Local Interconnect Network (LIN), and FlexRay.

[0029] The communication device 111 is a device that performs wireless communication with other devices (e.g., a server or a smartphone) via a predetermined communication network. Examples of communication networks include mobile communication networks (e.g., LTE, 4G, 5G, 6G, etc.), Wi-Fi (registered trademark), Bluetooth (registered trademark), etc.

[0030] The vehicle control device 112 is a device that controls the behavior of vehicle 1. For example, the vehicle control device 112 controls the starting and stopping of vehicle 1, the opening and closing of doors, and the turning on and off of headlights. The vehicle control device 112 also provides information indicating the status of vehicle 1, such as starting and stopping, opening and closing of doors, and turning on and off headlights. The vehicle control device 112 also provides illuminance values ​​measured by an illuminance sensor (not shown) for measuring illuminance outside or inside the vehicle.

[0031] The seating detection device 113 is a device for detecting whether or not an occupant is seated in each seat. For example, the seating detection device 113 may detect whether or not an occupant is seated in a seat by using a weight sensor provided in the seat. Alternatively, the seating detection device 113 may detect whether or not an occupant is seated in a seat by checking whether or not the seat belt of the seat is fastened. Alternatively, the seating detection device 113 may detect whether or not an occupant is seated in a seat by performing a person detection process at the seat location from an image captured by a camera (not shown) installed in the vehicle.

[0032] The IVI device 114 is a device that provides information about the vehicle 1 and provides entertainment. IVI stands for In-Vehicle Infotainment. For example, the IVI device 114 outputs music and video from a car audio system, in-car DVD player, TV tuner, radio, VOD, etc. The IVI device 114 may also be read as a control unit or an Electronic Control Unit (ECU). The IVI device 114 may also include a processor and memory, etc.

[0033] The IVI device 114 searches for and outputs a route to the destination. The IVI device 114 may search for a route to the destination using its built-in map data, or it may have an external device search for a route to the destination via the communication device 111, and then acquire and output the search results. The route to the destination may be displayed to the driver as navigation, or it may be used as an automated driving plan for vehicle 1.

[0034] The IVI device 114 works in conjunction with the video control device 115 to control the display of content on the transparent display 100. The display of content according to this embodiment will be described later.

[0035] The video control device 115 controls the display of content on the transparent display 100. The content may be either a still image or a moving image. The video control device 115 can also control the light transmittance of any area of ​​the transparent display 100. The video control device 115 may control the display of content on the transparent display 100 and the transmittance of any area, based on control from the IVI device 114. The video control device 115 and the transparent display 100 may together constitute a display device. Alternatively, the IVI device 114, the video control device 115, and the transparent display 100 may together constitute a display device.

[0036] While the passengers in the rear seats 22 are seated, the transparent display 100 displays (plays) a first content 301 as shown in Figure 5. The first content 301 is, for example, entertainment content to entertain the passengers in the rear seats 22, or relaxation content to help the passengers in the rear seats 22 relax.

[0037] When passengers board or alight from the rear seats 22, the transparent display 100 displays a second content 302 that is different from the first content 301, and increases the first light transmittance of the first display area 311 to be greater than the second light transmittance of the second display area 312 (see Figure 6) which is below the first display area 311 (see Figure 6). The second content 302 may be displayed in the second display area 312. However, the second content 302 may be displayed spanning both the first display area 311 and the second display area 312. Also, the first content 301 may be displayed larger than the second content 302. However, the first content 301 may be displayed smaller than the second content 302. When the second content 302 is displayed on the transparent display 100, it is content that reduces the likelihood of rear-seat passengers touching the transparent display 100.

[0038] For example, the transparent display 100 displays an image showing a predetermined pattern as shown in Figure 6 as the second content 302. For example, the transparent display 100 displays at least one of the following as the second content 302: an image of a swaying curtain as shown in Figure 7, an image of a wavy water surface as shown in Figure 8, or an image of a grassland swaying in the wind as shown in Figure 9. For example, the transparent display 100 may display at least one of the following as the second content 302: an image of a cactus as shown in Figure 10, an image of fish swimming in water as shown in Figure 11, or an image of clouds drifting as shown in Figure 12.

[0039] Images like those exemplified in Figures 6 to 12 give rear-seat passengers the impression that it is difficult to place their hands on the display and lean on it (difficult to lean on it). Therefore, by displaying such images as a second content 302 on the transparent display 100, it is possible to discourage rear-seat passengers from placing their hands on the transparent display 100 to maintain their balance. Thus, the risk of the transparent display 100 becoming dirty or damaged can be reduced.

[0040] As shown in Figure 6, the first display area 311 may be, for example, at least 1 / 4 of the transparent display 100 from top to bottom. The first light transmittance may be such that the occupants can see the scenery outside the vehicle through the transparent display 100 and the front windshield 4 (e.g., transparent). This allows rear-seat passengers to see the scenery inside and outside the vehicle at eye level, making it easier to maintain posture balance and preventing them from losing their balance and putting their hands on the transparent display 100.

[0041] As shown in Figure 6, the second display area 312 may be, for example, at least one-quarter of the area of ​​the transparent display 100 from bottom to top. The second light transmittance may be a transmittance that allows the second content 302 to be clearly visible (e.g., opaque or light-blocking). This makes it more likely that rear-seat passengers will see the image of the second content 302 displayed in the second display area 312 and hesitate to touch the transparent display 100, thereby preventing rear-seat passengers from consciously or unconsciously touching the transparent display 100.

[0042] As shown in Figures 3 and 6, when a rear-seat passenger gets in or out, the transparent display 100 may display information indicating the position of the handrail 31 in the second content 302. This increases the likelihood that the rear-seat passenger will recognize the position of the handrail 31 and grab onto it, thereby reducing the likelihood that the rear-seat passenger will touch the transparent display 100.

[0043] As shown in Figures 3 and 6, at least a portion of the second content 302 may provide the function of illumination 303. This illumination 303 function may be provided when the illuminance outside and / or inside the vehicle is below a predetermined threshold. For example, the transparent display 100 provides the illumination 303 function by displaying white or a color with high brightness and saturation in at least a portion of the second content 302. As a result, the area around the feet is brightened by the illumination 303 function, making it easier for rear-seat passengers to maintain their balance and preventing them from losing their balance and putting their hands on the transparent display 100.

[0044] When a passenger boards or alights from the rear seat 22, the transparent display 100 may display a message 304 directed to the passenger of the rear seat 22 in the second content 302. The boarding message 304 and the alighting message 304 may be different.

[0045] An example of a boarding message 304 is shown below. Note that one boarding message 304 may be displayed, or multiple messages may be displayed. • Greeting messages appropriate to the current time, such as "Good morning" or "Good evening." • Messages including the crew member's name, such as "Hello, Mr. / Ms. [Name]". • Warning messages such as "Watch your step" • A thank-you message such as "Thank you for always riding with us." • Messages indicating the passenger's upcoming schedule and traffic information, such as "We are expected to reach our destination in 30 minutes. There is no traffic congestion." • Messages that encourage relaxation, such as "Please make yourself at home." • Messages indicating the vehicle's destination, such as "This vehicle is heading towards XX."

[0046] An example of a disembarking message 304 is shown below. Note that one disembarking message 304 may be displayed, or multiple messages may be displayed. • Messages informing the crew of their arrival, such as "We have arrived at our destination." • Messages including the names of the crew members, such as "We have arrived at Mr. / Ms. [Name]'s home." • Messages indicating the crew's upcoming plans, such as "Our plan at this destination is to have dinner with Mr. / Ms. XX." • Warning messages such as "Watch your step" • Weather messages such as "It's raining outside." • A thank-you message such as "Please use our service again."

[0047] <Processing Flow> Figure 13 is a flowchart showing an example of the status determination process according to Embodiment 1.

[0048] The IVI device 114 determines whether or not it was able to obtain the schedule information of the rear-seat passengers (S101). For example, if the rear-seat passengers give permission, the IVI device 114 obtains the rear-seat passengers' schedule information from a predetermined server or cloud service where the rear-seat passengers' schedule information is managed, via the communication device 111.

[0049] If the schedule information for rear-seat passengers cannot be obtained (S101: NO), the process proceeds to process B shown in Figure 14. If the schedule information for rear-seat passengers can be obtained (S101: YES), the following process is performed.

[0050] The IVI device 114 obtains at least one of the following from the acquired schedule information: the planned boarding location and boarding time for rear-seat passengers, and the planned alighting location and alighting time (S102). For example, if the schedule information includes a departure point and a destination, the IVI device 114 uses the departure point as the planned boarding location and the destination as the planned alighting location. For example, if the schedule information includes a departure time and an arrival time, the IVI device 114 uses the departure time as the planned boarding time and the arrival time as the planned alighting time.

[0051] The IVI device 114 acquires the current location and time of vehicle 1 (S103). For example, the IVI device 114 identifies the current location and time of vehicle 1 from the car navigation system.

[0052] The IVI device 114 compares at least one of the planned boarding location and boarding time and the planned alighting location and alighting time obtained in step S101 with the current location and current time of vehicle 1 obtained in step S103 to identify the current status of vehicle 1 (S104). For example, (a) if the current location of vehicle 1 is before the planned boarding location, or if the current time is earlier than the planned boarding time, the IVI device 114 identifies the current status of vehicle 1 as "before planned boarding". For example, (b) if the current location of vehicle 1 is between the planned boarding location and the planned alighting location, or if the current time is between the planned boarding time and the planned alighting time, the IVI device 114 identifies the current status of vehicle 1 as "between boarding and alighting". For example, if neither (a) nor (b) above applies, the IVI device 114 identifies the current status of vehicle 1 as "after planned alighting or no planned alighting".

[0053] If the current status of vehicle 1 is identified as "scheduled to disembark or not scheduled to disembark" in step S104, the process proceeds to process B shown in Figure 14.

[0054] If the current status of vehicle 1 is identified as "before scheduled boarding" in step S104, the following process is performed. That is, the IVI device 114 determines whether or not vehicle 1 has arrived at the scheduled boarding location (S111). If the IVI device 114 determines that vehicle 1 has arrived at the scheduled boarding location (S111: YES), it executes the boarding process (S112) and returns the process to step S101. Details of the boarding process will be described later (see Figure 15). If the IVI device 114 determines that vehicle 1 has not arrived at the scheduled boarding location (S111: NO), it returns the process to step S101.

[0055] If the current status of vehicle 1 is identified as "between boarding and alighting" in step S104, the following process is performed. That is, the IVI device 114 determines whether or not vehicle 1 has arrived at the planned alighting location (S121). If the IVI device 114 determines that vehicle 1 has arrived at the planned alighting location (S121: YES), it performs the alighting process (S112) and returns the process to step S101. Details of the alighting process will be described later (see Figure 16). If the IVI device 114 determines that vehicle 1 has not arrived at the planned alighting location (S121: NO), it returns the process to step S101.

[0056] Figure 14 is a flowchart showing an example of process B, which follows the process shown in Figure 13.

[0057] The IVI device 114 determines whether or not an occupant is seated in the rear seat 22 based on the detection result from the seating detection device 113 (S130).

[0058] If it is determined in step S130 that there is no occupant seated in the rear seat 22 (S130: NO), the following process is performed.

[0059] The IVI device 114 determines whether or not vehicle 1 is stationary based on information obtained from the vehicle control device 112 (S131). For example, the IVI device 114 determines that vehicle 1 is stationary if the speed of vehicle 1 is 0, the shift lever is in park, and / or the parking brake is on.

[0060] If it is determined that vehicle 1 is not stationary (S131: NO), the IVI device 114 returns to process A (i.e., step S101) as shown in Figure 13.

[0061] If it is determined that vehicle 1 is stationary (S131: YES), the IVI device 114 determines whether the rear passenger door 23 (see Figure 3) is open or not based on the information obtained from the vehicle control device (S132).

[0062] If it is determined that the rear passenger door 23 is not open (S132: NO), the IVI device 114 returns to process A (i.e., step S101) as shown in Figure 13.

[0063] If it is determined that the rear passenger door 23 is open (S132: YES), the IVI device 114 performs the boarding process (S133) and returns the process to process A (i.e., step S101) as shown in Figure 13. Details of the boarding process will be described later (see Figure 15).

[0064] In other words, if the vehicle 1 stops and the rear door 23 is opened while no occupant is seated in the rear seat 22, the IVI device 114 determines that an occupant is getting into the rear seat 22 and executes the boarding process.

[0065] If it is determined in step S130 that an occupant is seated in the rear seat 22 (S130: YES), the following process is performed.

[0066] The IVI device 114 determines whether or not vehicle 1 is stationary based on information obtained from the vehicle control device 112 (S141).

[0067] If it is determined that vehicle 1 is not stationary (S141: NO), the IVI device 114 returns to process A (i.e., step S101) as shown in Figure 13.

[0068] If it is determined that vehicle 1 is stationary (S141: YES), the IVI device 114 determines whether the rear passenger door 23 is open or not based on the information obtained from the vehicle control device (S132).

[0069] If it is determined that the rear passenger door 23 is not open (S142: NO), the IVI device 114 returns to process A (i.e., step S101) as shown in Figure 13.

[0070] If it is determined that the rear passenger door 23 is open (S142: YES), the IVI device 114 performs the disembarkation process (S143) and returns the process to process A (i.e., step S101) as shown in Figure 13. Details of the disembarkation process will be described later (see Figure 16).

[0071] In other words, if the vehicle 1 stops and the rear door 23 opens while an occupant is seated in the rear seat 22, the IVI device 114 determines that the occupant in the rear seat 22 is getting out of the vehicle and executes the disembarkation process.

[0072] <Boarding Process Flow> Figure 15 is a flowchart showing an example of the boarding process according to Embodiment 1. This boarding process is called in step S112 shown in Figure 13 or step S133 shown in Figure 14.

[0073] The IVI device 114 stops playback of the first content 301 on the transparent display 100 (S201).

[0074] The IVI device 114 makes the first light transmittance of the first display area 311 in the transparent display 100 greater than the second light transmittance of the second display area 312. For example, the IVI device 114 makes the first display area 311 in the transparent display 100 transparent (S202).

[0075] The IVI device 114 displays a boarding message 304 and the position of the handrail 31 as second content on the transparent display 100 (S203).

[0076] The IVI device 114 determines whether it is dark outside or inside the vehicle (S204). For example, the IVI device 114 determines it is dark if the illuminance value measured by an illuminance sensor installed outside or inside the vehicle is less than a predetermined threshold, and determines it is bright if the illuminance value is equal to or greater than the threshold. Alternatively, the IVI device 114 determines it is dark if the headlights of vehicle 1 are on, and determines it is bright if the headlights are off. The headlights may be switched on / off manually by the driver, or they may be switched automatically based on the illuminance value from the illuminance sensor. Alternatively, the IVI device 114 may determine it is dark (i.e., it is nighttime) if the current time is within a predetermined nighttime period, and determine it is bright (i.e., it is not nighttime) if the current time is not within that nighttime period.

[0077] If it is determined that the outside or inside of the vehicle is bright (S204: NO), the IVI device 114 displays the image of the second content 302 brightly in the second display area 312 (e.g., the light-shielding area) of the transparent display 100 (S205). Then the process proceeds to step S210.

[0078] If it is determined that it is dark outside or inside the vehicle (S204: YES), the IVI device 114 turns on the function of the lighting 303 as the second content 302 (S206). Then, the IVI device 114 displays the image of the second content 302 at a dim level in the second display area 312 (e.g., the light-shielding area) of the transparent display 100 (S207). Then the process proceeds to step S210.

[0079] As step S210, the IVI device 114 determines whether or not an occupant has finished getting into the rear seat 22 (S210). For example, if the IVI device 114 detects from information obtained from the vehicle control device 112 that the rear door 23, which was open, has been closed, it determines that an occupant has finished getting into the rear seat 22. For example, if the seating detection device 113 detects that someone is seated in the rear seat 22, the IVI device 114 determines that an occupant has finished getting into the rear seat 22. For example, if the seating detection device 113 detects that a seat belt is fastened in the rear seat 22, the IVI device 114 determines that an occupant has finished getting into the rear seat.

[0080] If it is determined that the occupant has not yet boarded the rear seat 22 (S210: NO), the IVI device 114 repeats the process of step S210. If it is determined that the occupant has boarded the rear seat 22 (S210: YES), the following process is performed.

[0081] The IVI device 114 hides the second content 302 that is currently displayed on the transparent display 100 (S211).

[0082] The IVI device 114 restores the transparency of the transparent display 100 to its original state when the first content 301 was being played (S212).

[0083] The IVI device 114 resumes playback of the first content 301 on the transparent display 100 (S213).

[0084] Then, the boarding process is completed, and the process returns to the calling process (the process after step S112 in Figure 13 or step S133 in Figure 14).

[0085] <Disembarkation Process Flow> Figure 16 is a flowchart showing an example of the disembarkation process according to Embodiment 1. This disembarkation process is called in step S122 shown in Figure 13 or step S143 shown in Figure 14.

[0086] The IVI device 114 stops playback of the first content 301 on the transparent display 100 (S301).

[0087] The IVI device 114 makes the first light transmittance of the first display area 311 in the transparent display 100 greater than the second light transmittance of the second display area 312. For example, the IVI device 114 makes the first display area in the transparent display 100 transparent (S302).

[0088] The IVI device 114 displays a message 304 for disembarking and the position of the handrail 31 as a second content 302 on the transparent display (S303).

[0089] The IVI device 114 determines whether it is dark outside or inside the vehicle (S304).

[0090] If it is determined that the outside or inside of the vehicle is bright (S304: NO), the IVI device 114 displays the image of the second content 302 brightly in the second display area 312 (e.g., the light-shielding area) of the transparent display 100 (S305). The image of the second content 302 when exiting the vehicle may be the same as or different from the image of the second content 302 when entering the vehicle. Then the process proceeds to step S310.

[0091] If it is determined that it is dark outside or inside the vehicle (S304: YES), the IVI device 114 turns on the function of the lighting 303 as the second content 302 (S206). Then, the IVI device 114 displays the image of the second content 302 at a dim level in the second display area 312 (e.g., the light-shielding area) of the transparent display 100 (S207). Then, the process proceeds to step S310.

[0092] As step S310, the IVI device 114 determines whether or not the occupant has finished disembarking from the rear seat 22 (S210). For example, if the IVI device 114 detects from information obtained from the vehicle control device 112 that the rear door 23, which was open, has been closed, it determines that the occupant has finished disembarking from the rear seat 22. For example, if the seating detection device 113 changes from a detected state to a non-detected state for the seating of the rear seat 22, the IVI device 114 determines that the occupant has finished disembarking from the rear seat 22. For example, if the seating detection device 113 detects that the seat belt of the rear seat 22 has changed from fastened to unfastened, the IVI device 114 determines that the occupant has finished disembarking from the rear seat 22.

[0093] If it is determined that the occupant has not yet completed disembarking from the rear seat 22 (S310: NO), the IVI device 114 repeats the process of step S310. If it is determined that the occupant has completed disembarking from the rear seat 22 (S310: YES), the next process is performed.

[0094] The IVI device 114 hides the second content 302 that is currently displayed on the transparent display 100 (S311).

[0095] The IVI device 114 restores the transparency of the transparent display 100 to its original state when the first content 301 was being played (S312).

[0096] The IVI device 114 resumes playback of the first content 301 on the transparent display 100 (S313).

[0097] Then, the disembarkation process is completed, and the process returns to the calling process (the process after step S122 in Figure 13 or step S143 in Figure 14).

[0098] (Summary of Embodiment 1) Based on the description of Embodiment 1 above, the following technology is disclosed.

[0099] <Technology 1> Vehicle 1 comprises at least a first wheel 3A connected to the vehicle body 2, a second wheel 3B connected to the vehicle body 2, a third wheel 3C connected to the vehicle body 2, and a fourth wheel 3D connected to the vehicle body 2, and is capable of traveling in a predetermined direction using the first wheel 3A, the second wheel 3B, the third wheel 3C, and the fourth wheel 3D. The vehicle body 2 comprises a floor portion 11 and a ceiling portion 12 arranged in the predetermined orientation; a left side portion 13 connecting the floor portion 11 and the ceiling portion 12 and positioned on the left side in the predetermined orientation; a right side portion 14 connecting the floor portion 11 and the ceiling portion 12 and positioned on the right side in the predetermined orientation; a front portion 16 connecting the floor portion 11 and the ceiling portion 12 and positioned at the front portion 15 in the predetermined orientation; a rear portion 18 connecting the floor portion 11 and the ceiling portion 12 and positioned at the rear portion 17 in the predetermined orientation; at least one front seat 21 positioned on the floor portion 11 from the rear portion side toward the front portion 16; at least one rear seat 22 positioned on the floor portion 11 from the front portion 16 toward the rear portion 18; and a transparent display 100 positioned between the rear seat 22 and the front seat 21, with variable light transmittance. As a vehicle control method in the vehicle 1, when an occupant in the rear seat 22 is present, the transparent display 100 displays a first content 301, and when an occupant in the rear seat 22 gets in or out, the transparent display 100 displays a second content 302 that is different from the first content 301, and increases the first light transmittance of the first display area 311 to be greater than the second light transmittance of the second display area 312 below the first display area 311. As a result, rear-seat passengers can see outside or inside the vehicle through the first display area 311 of the transparent display 100, which has a relatively high light transmittance, making it easier to maintain their posture and preventing them from losing their balance and putting their hands on the transparent display 100.

[0100] <Technology 2> In the vehicle control method described in Technology 1, the second content 302 is displayed in the second display area 312. As a result, the second content 302 is displayed in the second display area 312, which has relatively low light transmittance, so that rear-seat passengers can easily see the second content 302.

[0101] <Technology 3> In the vehicle control method described in Technology 1 or 2, at least a portion of the second content 302 provides the function of lighting 303. As a result, the area around the rear passengers' feet is illuminated by the function of the lighting 303, making it easier for them to maintain their balance and preventing them from losing their balance and putting their hands on the transparent display 100.

[0102] <Technology 4> In the vehicle control method described in Technical 3, the function of the lighting 303 is provided when the illuminance outside and / or inside the vehicle is below a predetermined threshold. As a result, when the area outside and / or inside the vehicle is relatively dark, the lighting 303 will illuminate the area around the feet of passengers getting in and out of the rear seats.

[0103] <Technology 5> In the vehicle control method described in any one of technologies 1 to 4, when an occupant boards or alights from the rear seat 22, the transparent display 100 displays a message 304 directed to the occupant of the rear seat 22 in the second content 302. This allows rear-seat passengers to see the message 304 displayed on the transparent display 100.

[0104] <Technology 6> In the vehicle control method described in any one of technologies 1 to 5, when an occupant boards or alights from the rear seat 22, the transparent display 100 displays information indicating the position of the handrail 31 in the second content 302. This increases the likelihood that rear-seat passengers will grab onto the handrail 31, and prevents them from consciously or unconsciously touching the transparent display 100.

[0105] <Technology 7> In the vehicle control method described in any one of the technologies 1 to 6, when an occupant boards or alights from the rear seat 22, the transparent display 100 displays a predetermined pattern in the second content 302. This allows rear-seat passengers to see the transparent display 100 with a predetermined pattern displayed as the second content 302, thus preventing them from consciously or unconsciously touching the transparent display 100.

[0106] <Technology 8> In the vehicle control method described in any one of technologies 1 to 6, when an occupant boards or alights from the rear seat 22, the transparent display 100 displays at least one of the following in the second content 302: a swaying curtain, a rippling water surface, and a grassland swaying in the wind. This second content 302 gives the impression that it is difficult for rear-seat passengers to lean on it, thus discouraging them from placing their hands on and leaning against the transparent display 100.

[0107] <Technology 9> In the vehicle control method described in any one of the technologies 1 to 8, the vehicle 1 is equipped with a control unit (e.g., an IVI device 114), and the control unit determines whether the occupant of the rear seat 22 has boarded or alighted based on the occupant's schedule information. This makes it possible to distinguish between passengers who are about to board and those who are about to disembark.

[0108] <Technology 10> In the vehicle control method described in any one of the technologies 1 to 9, after the passengers in the rear seats 22 have finished getting in or out of the vehicle, the transparent display 100 resumes displaying the first content 301. This allows the transparent display 100 to switch the display from the first content 301 to the second content 302, and after the passengers have finished boarding or alighting, to resume displaying the first content 301.

[0109] <Technology 11> Vehicle 1 comprises at least a first wheel 3A connected to the vehicle body 2, a second wheel 3B connected to the vehicle body 2, a third wheel 3C connected to the vehicle body 2, and a fourth wheel 3D connected to the vehicle body 2, and is capable of traveling in a predetermined direction using the first wheel 3A, the second wheel 3B, the third wheel 3C, and the fourth wheel 3D. The display device is configured to be mounted on the vehicle 1. The vehicle body 2 comprises a floor portion 11 and a ceiling portion 12 arranged in the predetermined orientation; a left side portion 13 connecting the floor portion 11 and the ceiling portion 12 and positioned on the left side in the predetermined orientation; a right side portion 14 connecting the floor portion 11 and the ceiling portion 12 and positioned on the right side in the predetermined orientation; a front portion 16 connecting the floor portion 11 and the ceiling portion 12 and positioned at the front portion 15 in the predetermined orientation; a rear portion 18 connecting the floor portion 11 and the ceiling portion 12 and positioned at the rear portion 17 in the predetermined orientation; at least one front seat 21 positioned on the floor portion 11 on the side of the front portion 16 from the rear portion 18; at least one rear seat 22 positioned on the floor portion 11 on the side of the rear portion 18 from the front portion 16; and a transparent display 100 positioned between the rear seat 22 and the front seat 21, with variable light transmittance. As a display device, while an occupant of the rear seat 22 is present, the transparent display 100 displays the first content 301. When an occupant boards or alights from the rear seat 22, the transparent display 100 displays the second content 302, which is different from the first content 301, and increases the first light transmittance of the first display area 311 to be greater than the second light transmittance of the second display area 312 below the first display area 311. As a result, rear-seat passengers can see outside or inside the vehicle through the first display area 311 of the transparent display 100, which has a relatively high light transmittance, making it easier to maintain their posture and preventing them from losing their balance and putting their hands on the transparent display 100.

[0110] <Technology 12> In the display device described in Technical 11, the second content 302 is displayed in the second display area 312. As a result, the second content 302 is displayed in the second display area 312, which has relatively low light transmittance, so that rear-seat passengers can easily see the second content 302.

[0111] <Technology 13> In the display device described in Technical 11 or 12, at least a portion of the second content 302 provides the function of illumination 303. As a result, the area around the rear passengers' feet is illuminated by the function of the lighting 303, making it easier for them to maintain their balance and preventing them from losing their balance and putting their hands on the transparent display 100.

[0112] <Technology 14> In the display device described in Technical 13, the function of the illumination 303 is provided when the illuminance outside and / or inside the vehicle is below a predetermined threshold. As a result, when the area outside and / or inside the vehicle is relatively dark, the lighting 303 will illuminate the area around the feet of passengers getting in and out of the rear seats.

[0113] <Technology 15> In the display device described in any one of technologies 11 to 14, when an occupant boards or alights from the rear seat 22, the transparent display 100 displays a message 304 directed to the occupant of the rear seat 22 in the second content 302. This allows rear-seat passengers to see the message 304 displayed on the transparent display 100.

[0114] <Technology 16> In the display device described in any one of technologies 11 to 15, when an occupant boards or alights from the rear seat 22, the transparent display 100 displays information indicating the position of the handrail 31 in the second content 302. This increases the likelihood that rear-seat passengers will grab onto the handrail 31, and prevents them from consciously or unconsciously touching the transparent display 100.

[0115] <Technology 17> In the display device described in any one of technologies 11 to 16, when an occupant boards or alights from the rear seat 22, the transparent display 100 displays a predetermined pattern in the second content 302. This allows rear-seat passengers to see the transparent display 100 with a predetermined pattern displayed as the second content 302, thus preventing them from consciously or unconsciously touching the transparent display 100.

[0116] <Technology 18> In the display device described in any one of technologies 11 to 16, when an occupant boards or alights from the rear seat 22, the transparent display 100 displays at least one of the following in the second content: a swaying curtain, a rippling water surface, and a grassland swaying in the wind. This second content 302 gives the impression that it is difficult for rear-seat passengers to lean on it, thus discouraging them from placing their hands on and leaning against the transparent display 100.

[0117] <Technology 19> In the display device described in any one of the technologies 11 to 18, the vehicle 1 is equipped with a control unit (e.g., IVI device 114), and the control unit determines whether the rear seat occupant has boarded or alighted based on the rear seat occupant's schedule information. This makes it possible to distinguish between passengers who are about to board and those who are about to disembark.

[0118] <Technology 20> In the display device described in any one of technologies 11 to 19, the transparent display 100 resumes displaying the first content 301 after the passengers in the rear seats 22 have finished getting in or out of the vehicle. This allows the transparent display 100 to switch the display from the first content 301 to the second content 302, and after the passengers have finished boarding or alighting, to resume displaying the first content 301.

[0119] While embodiments have been described above with reference to the attached drawings, this disclosure is not limited to such examples. It is clear to those skilled in the art that various modifications, alterations, substitutions, additions, deletions, and equivalents can be conceived within the scope of the claims, and these are also understood to fall within the technical scope of this disclosure. Furthermore, the components of the embodiments described above can be combined in any way without departing from the spirit of the invention. [Industrial applicability]

[0120] The technology disclosed herein is useful for vehicles equipped with displays inside the vehicle. [Explanation of Symbols]

[0121] 1 vehicle 2 car bodies 3A 1st wheel 3B 2nd wheel 3C 3rd wheel 3D 4th wheel 4 Front windshield 11 Floor section 12 Ceiling section 13 Left side part 14 Right side part 15 Front 16 Front part 17 Rear 18 Rear part 21 Front seats 22 Rear seats 23 Rear door 31 Handrail 100 Transparent Display 102 Operation section 110 In-vehicle network 111 Communication equipment 112 Vehicle control system 113 Seating detection device 114 IVI equipment 115 Video control device 301 Content 1 302 Second Content 303 Lighting 304 Message 311 1st display area 312 2nd display area

Claims

1. The first wheel connected to the body, The second wheel connected to the aforementioned vehicle body, The third wheel connected to the aforementioned vehicle body, The vehicle body is equipped with at least a fourth wheel connected to the vehicle body, A vehicle capable of traveling in a predetermined direction using the first wheel, the second wheel, the third wheel, and the fourth wheel, The aforementioned vehicle body is A floor surface and a ceiling surface arranged along the predetermined orientation, A left side section is located on the left side, connecting the floor section and the ceiling section, and oriented in the predetermined direction. A right side section is located on the right side, connecting the floor section and the ceiling section, and aligned with the predetermined orientation. Connecting the floor portion and the ceiling portion, and having a front portion positioned at the front in the predetermined orientation, A rear surface portion is positioned at the rear in the predetermined orientation, connecting the floor portion and the ceiling portion. In the floor portion, at least one front seat is positioned on the front side of the rear portion, In the floor portion, at least one rear seat is positioned on the rear side of the front portion, A transparent display positioned between the rear seat and the front seat is provided. A vehicle control method for the aforementioned vehicle, While the rear-seat occupant is present, the transparent display shows the first content. When the passengers in the rear seats board or alight, the transparent display displays a second content different from the first content. The transparent display, in the second content, displays a message directed to the rear-seat occupant in the first display area. The transparent display provides illumination in the second content in at least a portion of the second display area below the first display area. Vehicle control method.

2. A vehicle control method according to claim 1, The transparent display, in at least the second content, has a light transmittance of at least the first display area that is greater than a predetermined value. Vehicle control method.

3. A vehicle control method according to claim 1, The lighting function is provided when the illuminance outside and / or inside the vehicle is below a predetermined threshold. Vehicle control method.

4. A vehicle control method according to claim 1, When a passenger boards or alights from the rear seat, the transparent display displays information indicating the position of the handrail in the second content. Vehicle control method.

5. A vehicle control method according to claim 1, When a passenger in the rear seat gets in or out, the transparent display displays a predetermined pattern in the second content. Vehicle control method.

6. A vehicle control method according to claim 1, When the passengers in the rear seats board or alight, the transparent display will, in the second content, The curtains swayed, A wavy water surface, and A grassland swaying in the wind, Display at least one of the following: Vehicle control method.

7. A vehicle control method according to claim 1, The vehicle is equipped with a control unit, The control unit determines whether the rear-seat passenger has boarded or alighted based on the rear-seat passenger's schedule information. Vehicle control method.

8. A vehicle control method according to claim 1, After the passengers in the rear seats have boarded or disembarked, the transparent display resumes displaying the first content. Vehicle control method.

9. A vehicle control method according to claim 1, The aforementioned message directed to the rear-seat passenger includes the fact that the destination has been reached. Vehicle control method.

10. A vehicle control method according to claim 1, The aforementioned message directed to the rear-seat passenger includes the instruction to pay attention to what is at your feet. Vehicle control method.

11. The first wheel connected to the body, The second wheel connected to the aforementioned vehicle body, The third wheel connected to the aforementioned vehicle body, The vehicle body is equipped with at least a fourth wheel connected to the vehicle body, A display device configured to be mounted on a vehicle capable of traveling in a predetermined direction using the first, second, third, and fourth wheels, The aforementioned vehicle body is A floor surface and a ceiling surface arranged along the predetermined orientation, A left side section is located on the left side, connecting the floor section and the ceiling section, and oriented in the predetermined direction. A right side section is located on the right side, connecting the floor section and the ceiling section, and aligned with the predetermined orientation. Connecting the floor portion and the ceiling portion, and having a front portion positioned at the front in the predetermined orientation, A rear surface portion is positioned at the rear in the predetermined orientation, connecting the floor portion and the ceiling portion. In the floor portion, at least one front seat is positioned on the front side of the rear portion, In the floor portion, at least one rear seat is positioned on the rear side of the front portion, A transparent display positioned between the rear seat and the front seat is provided, While the rear-seat occupant is present, the transparent display shows the first content. When the passengers in the rear seats board or alight, the transparent display displays a second content different from the first content. The transparent display, in the second content, displays a message directed to the rear-seat occupant in the first display area. The transparent display provides illumination in the second content in at least a portion of the second display area below the first display area. Display device.

12. A display device according to claim 11, The transparent display, in at least the second content, has a light transmittance of at least the first display area that is greater than a predetermined value. Display device.

13. A display device according to claim 11, The lighting function is provided when the illuminance outside and / or inside the vehicle is below a predetermined threshold. Display device.

14. A display device according to claim 11, When a passenger boards or alights from the rear seat, the transparent display displays information indicating the position of the handrail in the second content. Display device.

15. A display device according to claim 11, When a passenger in the rear seat gets in or out, the transparent display displays a predetermined pattern in the second content. Display device.

16. A display device according to claim 11, When the passengers in the rear seats board or alight, the transparent display will, in the second content, The curtains swayed, A wavy water surface, and A grassland swaying in the wind, Display at least one of the following: Display device.

17. A display device according to claim 11, The vehicle is equipped with a control unit, The control unit determines whether the rear-seat passenger has boarded or alighted based on the rear-seat passenger's schedule information. Display device.

18. A display device according to claim 11, After the passengers in the rear seats have boarded or disembarked, the transparent display resumes displaying the first content. Display device.

19. A display device according to claim 11, The aforementioned message directed to the rear-seat passenger includes the fact that the destination has been reached. Display device.

20. A display device according to claim 11, The aforementioned message directed to the rear-seat passenger includes the instruction to pay attention to what is at your feet. Display device.

Images