Vehicle control method and display device

Abstract

To inhibit an occupant from touching a display installed in a vehicle.SOLUTION: A vehicle includes a transparent display disposed between a rear seat and a front seat. When an occupant in the rear seat is on board, the transparent display displays a first content. When getting-on or getting-off of the occupant in the rear seat occurs, the transparent display displays a second content different from the first content and increases a first light transmission rate of a first display region to a level higher than a second light transmission rate of a second display region located below the first display region.SELECTED DRAWING: Figure 3

Description

Technical Field

[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 images and the like. If a passenger touches or puts weight on the display, the display may become dirty or damaged. Therefore, it is desired 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 not corresponding 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 person to be warned, 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 are displayed.

[0006] An object of the present disclosure is to provide a technology for suppressing a passenger from touching a display installed inside a vehicle.

Means for Solving the Problems

[0007] One aspect of the present disclosure is a first wheel connected to a vehicle body, a second wheel connected to the vehicle body, a third wheel connected to the vehicle body, a fourth wheel connected to the vehicle body, and at least includes a vehicle capable of traveling in a predetermined direction using the first wheel, the second wheel, the third wheel, and the fourth wheel, wherein the vehicle body includes a floor surface portion and a ceiling surface portion arranged along the predetermined direction, a left side surface portion that connects the floor surface portion and the ceiling surface portion and is arranged on the left side surface along the predetermined direction, a right side surface portion that connects the floor surface portion and the ceiling surface portion and is arranged on the right side surface along the predetermined direction, a front surface portion that connects the floor surface portion and the ceiling surface portion and is arranged at the front with respect to the predetermined direction, a rear surface portion that connects the floor surface portion and the ceiling surface portion and is arranged at the rear with respect to the predetermined direction, at least one front seat arranged on the floor surface portion on the front surface portion side with respect to the rear surface portion, at least one rear seat arranged on the floor surface portion on the rear surface portion side with respect to the front surface portion, and a transparent display arranged between the rear seat and the front seat and having a variable light transmittance. A vehicle control method in the vehicle, wherein when a passenger in the rear seat is on board, the transparent display displays first content, when boarding or alighting of the passenger in the rear seat occurs, the transparent display displays second content different from the first content and makes a first light transmittance of a first display area larger than a second light transmittance of a second display area below the first display area. A vehicle control method is provided.

[0008] One aspect of the present disclosure is a first wheel connected to the vehicle body, a second wheel connected to the vehicle body, a third wheel connected to the vehicle body, a fourth wheel connected to the vehicle body, and at least includes a display device configured to be mounted on a vehicle capable of traveling in a predetermined direction using the first wheel, the second wheel, the third wheel, and the fourth wheel, wherein the vehicle body has a floor surface portion and a ceiling surface portion arranged along the predetermined direction, a left side surface portion connecting the floor surface portion and the ceiling surface portion and arranged on the left side along the predetermined direction, a right side surface portion connecting the floor surface portion and the ceiling surface portion and arranged on the right side along the predetermined direction, a front surface portion connecting the floor surface portion and the ceiling surface portion and arranged at the front with respect to the predetermined direction, a rear surface portion connecting the floor surface portion and the ceiling surface portion and arranged at the rear with respect to the predetermined direction, at least one front seat arranged on the floor surface portion on the front surface portion side of the rear surface portion, at least one rear seat arranged on the floor surface portion on the rear surface portion side of the front surface portion, and a transparent display arranged between the rear seat and the front seat and having a variable light transmittance. When a passenger in the rear seat is on board, the transparent display displays first content. When boarding or alighting of the passenger in the rear seat occurs, the transparent display displays second content different from the first content, and makes a first light transmittance of a first display area larger than a second light transmittance of a second display area below the first display area. A display device is provided.

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

Advantages of the Invention

[0010] According to the present disclosure, it is possible to suppress a passenger from touching a display installed inside a vehicle.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

Figure 12

Figure 13

Figure 14

Figure 15

Figure 16

Mode for Carrying Out the Invention

[0012] Hereinafter, embodiments of the present disclosure will be described in detail with appropriate reference to the drawings. However, a more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters and duplicate descriptions of substantially the same configurations may be omitted. This is to avoid making the following description unnecessarily redundant and to facilitate the understanding of those skilled in the art. Note that the accompanying drawings and the following description are provided to enable those skilled in the art to fully understand the present disclosure, and are not intended to limit the subject matter described in the claims.

[0013] (Embodiment 1) <Configuration of the Vehicle>

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

[0015] For the sake of convenience in explanation, as shown in FIGS. 1 and 2, the longitudinal direction of the vehicle 1 is defined as the Y-axis, the width direction of the vehicle 1 is defined as the X-axis, and the height direction of the vehicle 1 is defined as the Z-axis. Also, for the sake of convenience in explanation, the positive direction of the Z-axis is referred to as "up", the negative direction of the Z-axis is referred to as "down", the positive direction of the Y-axis is referred to as "front", the negative direction of the Y-axis is referred to as "rear", the positive direction of the X-axis is referred to as "right", and the negative direction of the X-axis is referred to as "left". Note that the expressions related to these directions are used for the sake of convenience in explanation and are not intended to limit the posture of the structure during actual use.

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

[0017] The vehicle body 2 includes a floor surface portion 11 and a ceiling surface portion 12 arranged along a predetermined direction.

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

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

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

[0021] The front part 16 is provided with a glass front window 4 that allows the outside of the vehicle to be visually recognized in a predetermined orientation from the front seat 21.

[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 an organic EL display or an LED display. For example, the transparent display 100 has a configuration in which a liquid crystal shutter capable of controlling the light transmittance is stacked on a self-luminous display panel (for example, an organic EL panel) having light transmittance. Then, the transparent display 100 makes the light transmittance of the liquid crystal shutter corresponding to the area where it is desired to approach transparency close to 100%, and makes the light transmittance of the liquid crystal shutter corresponding to the area where it is desired to approach light shielding close to 0%. Thereby, the transparent display 100 can make any area approach transparency or light shielding.

[0023] When the transparent display 100 is in a transparent state, the passenger sitting in the rear seat 22 can visually recognize the outside of the vehicle through the transparent display 100 and the front window 4.

[0024] The transparent display 100 is set to reproduce predetermined content. The content may be either a moving image or a still image. Also, the content may be read as video. The passenger in the rear seat 22 can view the content displayed on the transparent display 100.

[0025] The vehicle 1 includes an operation unit 102 near the rear seat 22 inside the vehicle. The operation unit 102 may be a tablet terminal installed inside the vehicle. Alternatively, the operation unit 102 may be a smart phone owned by a passenger connected to the vehicle 1 by wire or wirelessly. Alternatively, the operation unit 102 may be a remote control for operating the IVI device 114 (see FIG. 4).

[0026] The transparent display 100 provided between the rear seat 22 and the front seat 21 may be touched by a passenger attempting to board the rear seat 22 or a passenger attempting to alight from the rear seat 22, which may result in soiling or damage. Therefore, in the present embodiment, a technique for suppressing a passenger attempting to board the rear seat 22 or a passenger attempting to alight from the rear seat 22 from touching the transparent display 100 provided between the rear seat 22 and the front seat 21 will be described. In the following description, a passenger attempting to board the rear seat 22 or a passenger attempting to alight from the rear seat 22 is referred to as a rear seat boarding / alighting passenger.

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

[0028] As shown in FIG. 4, the vehicle 1 includes a communication device 111, a vehicle control device 112, a seating 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 seating detection device 113, the IVI device 114, and the video control device 115 can transmit and receive information with each other via an in-vehicle network 110. Examples of the in-vehicle network 110 include Controller Area Network (CAN), Local Interconnect Network (LIN), and FlexRay, etc.

[0029] The communication device 111 is a device that performs wireless communication with other devices (such as a server or a smartphone, etc.) through a predetermined communication network. Examples of the communication network include a mobile communication network (such as 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 the vehicle 1. For example, the vehicle control device 112 controls the start and stop of the vehicle 1, the opening and closing of the doors, the lighting and extinguishing of the headlights, etc. Also, the vehicle control device 112 provides information indicating the states such as the start and stop of the vehicle 1, the opening and closing of the doors, the lighting and extinguishing of the headlights, etc. Further, the vehicle control device 112 provides the illuminance value measured by an illuminance sensor (not shown) for measuring the illuminance outside or inside the vehicle.

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

[0032] The IVI device 114 is a device that realizes the provision of information regarding the vehicle 1 and the provision of entertainment. IVI is an abbreviation for In-Vehicle Infotainment. For example, the IVI device 114 outputs music and videos such as car audio, in-vehicle DVD, TV tuner, radio, VOD, etc. The IVI device 114 may be read as a control unit or an Electronic Control Unit (ECU). Also, the IVI device 114 may include a processor, a memory, and the like.

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

[0034] The IVI device 114 cooperates with the video control device 115 to control the display of content on the transparent display 100. The display of the 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. Also, the video control device 115 can control the light transmittance of any area of the transparent display 100. The video control device 115 may control the display of content and the transmittance of any area on the transparent display 100 under the control from the IVI device 114. Note that the video control device 115 and the transparent display 100 may be included as a display device. Alternatively, the IVI device 114, the video control device 115, and the transparent display 100 may be included as a display device.

[0036] While a passenger in the rear seat 22 is on board, the transparent display 100 displays (plays) the first content 301 as shown in FIG. 5. The first content 301 is, for example, entertainment content for entertaining the passenger in the rear seat 22, relaxation content for relaxing the passenger in the rear seat 22, or the like.

[0037] When boarding or alighting of a passenger in the rear seat 22 occurs, the transparent display 100 displays the second content 302 different from the first content 301, and makes the first light transmittance of the first display area 311 larger than the second light transmittance of the second display area 312 (see FIG. 6) below the first display area 311 (see FIG. 6). The second content 302 may be displayed in the second display area 312. However, the second content 302 may also be displayed across 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. The second content 302 is content that reduces the possibility that a rear seat boarding / alighting passenger touches the transparent display 100 when it is displayed on the transparent display 100.

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

[0039] Videos such as those illustrated in FIGS. 6 to 12 give the impression to rear seat getting-on / off passengers that it is difficult to touch and lean on with their hands. Therefore, by displaying such a video as the second content 302 on the transparent display 100, it is possible to suppress the rear seat getting-on / off passengers from trying to touch the transparent display 100 in order to maintain their posture balance. Thus, it is possible to reduce the soiling and damage of the transparent display 100.

[0040] As shown in FIG. 6, the first display area 311 may be, for example, at least 1 / 4 of the area from the top to the bottom of the transparent display 100. The first light transmittance may be a transmittance (e.g., transparent) through which a passenger can see the scenery outside the vehicle through the transparent display 100 and the front window 4. Thereby, since the rear seat getting-on / off passengers can see the scenery inside and outside the vehicle at the height of their line of sight, it becomes easier to maintain their posture balance, and it is possible to suppress the rear seat getting-on / off passengers from losing their posture balance and touching the transparent display 100 with their hands.

[0041] As shown in FIG. 6, the second display area 312 may be, for example, at least 1 / 4 of the area from the bottom to the top of the transparent display 100. The second light transmittance may be a transmittance (e.g., non-transparent or light-shielding) through which the second content 302 can be clearly viewed. Thereby, since the rear seat getting-on / off passengers are more likely to hesitate to touch the transparent display 100 after seeing the video of the second content 302 displayed in the second display area 312, it is possible to suppress the rear seat getting-on / off passengers from consciously or unconsciously touching the transparent display 100.

[0042] As shown in FIGS. 3 and 6, when a rear seat passenger gets on or off the vehicle, the transparent display 100 may display information indicating the position of the grab bar 31 in the second content 302. Thereby, since the rear seat getting-on / off passengers are more likely to recognize the position of the grab bar 31 and hold onto it, it is possible to reduce the possibility of the rear seat getting-on / off passengers touching the transparent display 100 with their hands.

[0043] As shown in FIGS. 3 and 6, at least a part of the second content 302 may provide the function of the lighting 303. This function of the lighting 303 may be provided when the illuminance outside and / or inside the vehicle is equal to or lower than a predetermined threshold value. For example, the transparent display 100 provides the function of the lighting 303 by displaying white or a color with high brightness and chroma on at least a part of the second content 302. As a result, the function of the lighting 303 brightens the area near the feet, making it easier for the rear seat passengers to get in and out of the vehicle to maintain their balance and preventing them from losing their balance and touching the transparent display 100 with their hands.

[0044] When a passenger gets in or out of the rear seat 22, the transparent display 100 may display a message 304 for the passenger in the second content 302. The boarding message 304 and the alighting message 304 may be different.

[0045] Examples of the boarding message 304 are as follows. Note that one or more boarding messages 304 may be displayed. · A greeting message according to the current time, such as "Good morning" or "Good evening" · A message including the name of the passenger, such as "Hello, Mr. / Ms. XX" · A message prompting attention, such as "Please watch your step" · A thank-you message, such as "Thank you for always riding with us" · A message indicating the passenger's future schedule and traffic information, such as "It is expected to take 30 minutes to the destination. There is no traffic jam" · A message promoting relaxation, such as "Please take your time" · A message indicating the direction of the vehicle, such as "This is a vehicle heading towards XX"

[0046] Examples of the alighting message 304 are as follows. Note that one or more alighting messages 304 may be displayed. · A message to inform the passenger of arrival, such as "Arrived at the destination" · A message including the passenger's name, such as "Arrived at the home of Mr. / Ms. · A message indicating the passenger's future schedule, such as "The plan at this destination is to have a meal with Mr. / Ms. · A message to prompt attention, such as "Please pay attention to your steps" · A message indicating the weather, such as "It is raining outside" · A message of gratitude, such as "Thank you for using our service. Please use it again"

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

[0048] The IVI device 114 determines whether it has acquired the schedule information of the rear seat getting-on / off passenger (S101). For example, when the rear seat getting-on / off passenger permits, the IVI device 114 acquires the schedule information of the rear seat getting-on / off passenger from a predetermined server or cloud service where the schedule information of the rear seat getting-on / off passenger is managed via the communication device 111.

[0049] If the schedule information of the rear seat getting-on / off passenger cannot be acquired (S101: NO), the process proceeds to Process B shown in Figure 14. If the schedule information of the rear seat getting-on / off passenger can be acquired (S101: YES), the following process is performed.

[0050] The IVI device 114 acquires at least one of the scheduled boarding position and scheduled boarding time, and the scheduled alighting position and scheduled alighting time of the rear seat getting-on / off passenger from the acquired schedule information (S102). For example, when the departure location and the destination are registered in the schedule information, the IVI device 114 sets the departure location as the scheduled boarding position and the destination as the scheduled alighting position. For example, when the departure time and the arrival time are registered in the schedule information, the IVI device 114 sets the departure time as the scheduled boarding time and the arrival time as the scheduled alighting time.

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

[0052] The IVI device 114 collates at least one of the scheduled boarding position and scheduled boarding time and the scheduled alighting position and scheduled alighting time acquired in step S101 with the current position and current time of the vehicle 1 acquired in step S103 to identify the current situation of the vehicle 1 (S104). For example, (a) when the current position of the vehicle 1 is in front of the scheduled boarding position, or when the current time is before the scheduled boarding time, the IVI device 114 identifies the current situation of the vehicle 1 as "before scheduled boarding". For example, (b) when the current position of the vehicle 1 is between the scheduled boarding position and the scheduled alighting position, or when the current time is between the scheduled boarding time and the scheduled alighting time, the IVI device 114 identifies the current situation of the vehicle 1 as "between boarding and alighting". For example, when neither of the above (a) and (b) applies, the IVI device 114 identifies the current situation of the vehicle 1 as "after scheduled alighting or no schedule".

[0053] When the current situation of the vehicle 1 is identified as "after scheduled alighting or no schedule" in step S104, the process proceeds to process B shown in FIG. 14.

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

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

[0056] Fig. 14 is a flowchart showing an example of subsequent process B of the process shown in Fig. 13.

[0057] Based on the detection result by the seating detection device 113, the IVI device 114 determines whether a passenger is seated in the rear seat 22 (S130).

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

[0059] Based on the information obtained from the vehicle control device 112, the IVI device 114 determines whether vehicle 1 is stopped (S131). For example, when the speed of vehicle 1 is 0, the shift lever is in the parking position, and / or the parking brake is on, the IVI device 114 determines that vehicle 1 is stopped.

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

[0061] If it is determined that vehicle 1 is stopped (S131: YES), based on the information obtained from the vehicle control device, the IVI device 114 determines whether the rear seat door 23 (see Fig. 3) is open (S132).

[0062] When it is determined that the rear seat door 23 is not open (S132: NO), the IVI device 114 returns the process to process A shown in FIG. 13 (that is, step S101).

[0063] When it is determined that the rear seat door 23 is open (S132: YES), the IVI device 114 executes the boarding process (S133) and returns the process to process A shown in FIG. 13 (that is, step S101). The details of the boarding process will be described later (see FIG. 15).

[0064] That is, when the vehicle 1 stops and the rear seat door 23 opens while no passenger is seated in the rear seat 22, the IVI device 114 determines that a passenger is boarding the rear seat 22 and executes the boarding process.

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

[0066] The IVI device 114 determines whether the vehicle 1 is stopped based on the information obtained from the vehicle control device 112 (S141).

[0067] When it is determined that the vehicle 1 is not stopped (S141: NO), the IVI device 114 returns the process to process A shown in FIG. 13 (that is, step S101).

[0068] When it is determined that the vehicle 1 is stopped (S141: YES), the IVI device 114 determines whether the rear seat door 23 is open based on the information obtained from the vehicle control device (S132).

[0069] When it is determined that the rear seat door 23 is not open (S142: NO), the IVI device 114 returns the process to process A shown in FIG. 13 (that is, step S101).

[0070] When it is determined that the rear seat door 23 is open (S142: YES), the IVI device 114 executes the alighting process (S143) and returns the process to process A shown in FIG. 13 (that is, step S101). Details of the alighting process will be described later (see FIG. 16).

[0071] That is, when the vehicle 1 stops and the rear seat door 23 opens while a passenger is seated in the rear seat 22, the IVI device 114 determines that the passenger in the rear seat 22 is getting off and executes the alighting process.

[0072] <Ride Process Flow> FIG. 15 is a flowchart showing an example of the ride process according to Embodiment 1. The ride process is called at step S112 shown in FIG. 13 or step S133 shown in FIG. 14.

[0073] The IVI device 114 stops the reproduction 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 on the transparent display 100 larger than the second light transmittance of the second display area 312. For example, the IVI device 114 makes the first display area 311 on the transparent display 100 transparent (S202).

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

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

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

[0078] When it is determined that it is dark outside the vehicle or inside the vehicle (S204: YES), the IVI device 114 turns on the function of the illumination 303 as the second content 302 (S206). Then, the IVI device 114 darkly displays the video of the second content 302 in the second display area 312 (for example, a 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 the passenger has completed boarding the rear seat 22 (S210). For example, when the IVI device 114 detects from the information obtained from the vehicle control device 112 that the rear seat door 23 that was open has been closed, it determines that the passenger has completed boarding the rear seat 22. For example, when the seating detection device 113 detects the seating on the rear seat 22, the IVI device 114 determines that the passenger has completed boarding the rear seat 22. For example, when the seating detection device 113 detects the wearing of the seat belt on the rear seat 22, the IVI device 114 determines that the passenger has completed boarding the rear seat.

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

[0081] The IVI device 114 makes the second content 302 being displayed on the transparent display 100 invisible (S211).

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

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

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

[0085] <Alighting process flow> FIG. 16 is a flowchart showing an example of the alighting process according to Embodiment 1. The alighting process is called at step S122 shown in FIG. 13 or step S143 shown in FIG. 14.

[0086] The IVI device 114 stops playing 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 on 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 on the transparent display 100 transparent (S302).

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

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

[0090] When it is determined that it is bright outside or inside the vehicle (S304: NO), the IVI device 114 displays the image of the second content 302 brightly in the second display area 312 (for example, a light-shielding area) of the transparent display 100 (S305). Note that the image of the second content 302 when getting off the vehicle may be the same as or different from the image of the second content 302 when getting on the vehicle. Then, the process proceeds to step S310.

[0091] When 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 darkly in the second display area 312 (for example, a 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 the passenger has completed getting off the vehicle from the rear seat 22 (S210). For example, when the IVI device 114 detects from the information obtained from the vehicle control device 112 that the rear seat door 23 that was open has been closed, it determines that the passenger has completed getting off the vehicle from the rear seat 22. For example, when the seating detection device 113 changes the detection state of the rear seat 22 from the detected state to the non-detected state, the IVI device 114 determines that the passenger has completed getting off the vehicle from the rear seat 22. For example, when the seating detection device 113 detects that the seat belt of the rear seat 22 has been removed from the worn state, the IVI device 114 determines that the passenger has completed getting off the vehicle from the rear seat 22.

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

[0094] The IVI device 114 makes the second content 302 being displayed on the transparent display 100 non - visible (S311).

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

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

[0097] Then, this getting - off process is completed, and the process returns to the calling - source process (the process after step S122 in FIG. 13 or step S143 in FIG. 14).

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

[0099] <Technology 1> The vehicle 1 includes 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 can travel 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 includes a floor surface portion 11 and a ceiling surface portion 12 arranged along the predetermined direction, a left side surface portion 13 connecting the floor surface portion 11 and the ceiling surface portion 12 and arranged on the left side surface along the predetermined direction, a right side surface portion 14 connecting the floor surface portion 11 and the ceiling surface portion 12 and arranged on the right side surface along the predetermined direction, a front surface portion 16 connecting the floor surface portion 11 and the ceiling surface portion 12 and arranged at the front portion 15 with respect to the predetermined direction, a rear surface portion 18 connecting the floor surface portion 11 and the ceiling surface portion 12 and arranged at the rear portion 17 with respect to the predetermined direction, at least one front seat 21 arranged on the floor surface portion 11 on the front surface portion 16 side from the rear surface portion side, at least one rear seat 22 arranged on the floor surface portion 11 on the rear surface portion 18 side from the front surface portion 16, and a transparent display 100 arranged between the rear seat 22 and the front seat 21 and having a variable light transmittance. As a vehicle control method in the vehicle 1, while a passenger in the rear seat 22 is on board, the transparent display 100 displays a first content 301, and when boarding or alighting of the passenger in the rear seat 22 occurs, the transparent display 100 displays a second content 302 different from the first content 301, and makes a first light transmittance of a first display area 311 larger than a second light transmittance of a second display area 312 below the first display area 311. Thereby, since the rear seat boarding / alighting passenger can visually recognize the outside or inside of the vehicle through the first display area 311 with a relatively high light transmittance of the transparent display 100, it becomes easier to maintain the posture balance, and it is possible to suppress the rear seat boarding / alighting passenger from losing the posture balance and touching 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. Thereby, since the second content 302 is displayed in the second display area 312 with a relatively low light transmittance, the rear seat boarding / alighting passenger can clearly visually recognize the second content 302.

[0101] <Technology 3> In the vehicle control method according to Technique 1 or 2, at least a part of the second content 302 provides a function of the illumination 303. As a result, since the feet of the rear seat getting-on / off passengers are illuminated by the function of the illumination 303 and become bright, it becomes easier for the rear seat getting-on / off passengers to maintain their postural balance, and it is possible to prevent the rear seat getting-on / off passengers from losing their postural balance and touching the transparent display 100 with their hands.

[0102] <Technique 4> In the vehicle control method according to Technique 3, the function of the illumination 303 is provided when the illuminance outside and / or inside the vehicle is equal to or lower than a predetermined threshold value. As a result, when it is relatively dark outside and / or inside the vehicle, the feet of the rear seat getting-on / off passengers are illuminated by the function of the illumination 303.

[0103] <Technique 5> In the vehicle control method according to any one of Techniques 1 to 4, when boarding or alighting of the passengers in the rear seat 22 occurs, the transparent display 100 displays a message 304 directed to the passengers in the rear seat 22 in the second content 302. As a result, the rear seat getting-on / off passengers can visually recognize the message 304 displayed on the transparent display 100.

[0104] <Technique 6> In the vehicle control method according to any one of Techniques 1 to 5, when boarding or alighting of the passengers in the rear seat 22 occurs, the transparent display 100 displays information indicating the position of the handrail 31 in the second content 302. As a result, the possibility that the rear seat getting-on / off passengers grab the handrail 31 increases, and it is possible to prevent the rear seat getting-on / off passengers from touching the transparent display 100 consciously or unconsciously.

[0105] <Technique 7> In the vehicle control method according to any one of Technologies 1 to 6, when a passenger in the rear seat 22 gets on or off the vehicle, the transparent display 100 displays a predetermined pattern in the second content 302. Thereby, a passenger getting on or off the rear seat can visually recognize the transparent display 100 on which a predetermined pattern is displayed as the second content 302, and it is possible to prevent the passenger getting on or off the rear seat from touching the transparent display 100 consciously or unconsciously.

[0106] <Technology 8> In the vehicle control method according to any one of Technologies 1 to 6, when a passenger in the rear seat 22 gets on or off the vehicle, the transparent display 100 displays at least one of a swaying curtain, a wavy water surface, and a grassland swaying in the wind in the second content 302. Since such second content 302 gives an impression that it is difficult to approach the passenger getting on or off the rear seat, it is possible to prevent the passenger getting on or off the rear seat from touching and approaching the transparent display 100.

[0107] <Technology 9> In the vehicle control method according to any one of Technologies 1 to 8, the vehicle 1 includes a control unit (for example, the IVI device 114), and the control unit determines whether a passenger in the rear seat 22 gets on or off the vehicle based on the schedule information of the passenger in the rear seat 22. Thereby, it is possible to distinguish between a passenger who is about to get on the vehicle and a passenger who is about to get off the vehicle.

[0108] <Technology 10> In the vehicle control method according to any one of Technologies 1 to 9, after a passenger in the rear seat 22 has completed getting on or off the vehicle, the transparent display 100 resumes displaying the first content 301. Thereby, after the transparent display 100 switches the display from the first content 301 to the second content 302 and a passenger has completed getting on or off the vehicle, the transparent display 100 can resume displaying the first content 301.

[0109] <Technology 11> The vehicle 1 is at least provided with 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 can travel 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 set to be mounted on the vehicle 1. The vehicle body 2 includes a floor surface portion 11 and a ceiling surface portion 12 arranged along the predetermined direction, a left side surface portion 13 connecting the floor surface portion 11 and the ceiling surface portion 12 and arranged on the left side surface along the predetermined direction, a right side surface portion 14 connecting the floor surface portion 11 and the ceiling surface portion 12 and arranged on the right side surface along the predetermined direction, a front surface portion 16 connecting the floor surface portion 11 and the ceiling surface portion 12 and arranged at the front portion 15 with respect to the predetermined direction, a rear surface portion 18 connecting the floor surface portion 11 and the ceiling surface portion 12 and arranged at the rear portion 17 with respect to the predetermined direction, at least one front seat 21 arranged on the floor surface portion 11 on the side of the front surface portion 16 from the rear surface portion 18, at least one rear seat 22 arranged on the floor surface portion 11 on the side of the rear surface portion 18 from the front surface portion 16, and a transparent display 100 arranged between the rear seat 22 and the front seat 21 and having a variable light transmittance. As the display device, when a passenger in the rear seat 22 is on board, the transparent display 100 displays the first content 301, and when the boarding or alighting of the passenger in the rear seat 22 occurs, the transparent display 100 displays a second content 302 different from the first content 301, and makes the first light transmittance of the first display area 311 larger than the second light transmittance of the second display area 312 below the first display area 311. Thereby, the rear seat boarding and alighting passengers can visually recognize the outside or inside of the vehicle through the first display area 311 with a relatively high light transmittance of the transparent display 100, so it becomes easier to maintain the posture balance, and it is possible to prevent the rear seat boarding and alighting passengers from losing the posture balance and touching the transparent display 100.

[0110] <Technology 12> In the display device according to Technique 11, the second content 302 is displayed in the second display area 312. As a result, since the second content 302 is displayed in the second display area 312 with a relatively low light transmittance, the rear seat passengers getting on or off the vehicle can clearly see the second content 302.

[0111] <Technique 13> In the display device according to Technique 11 or 12, at least a part of the second content 302 provides the function of the illumination 303. As a result, since the feet of the rear seat passengers getting on or off the vehicle are illuminated by the function of the illumination 303 and become brighter, it becomes easier for the rear seat passengers getting on or off the vehicle to maintain their balance, and it is possible to prevent the rear seat passengers getting on or off the vehicle from losing their balance and touching the transparent display 100.

[0112] <Technique 14> In the display device according to Technique 13, the function of the illumination 303 is provided when the illuminance outside and / or inside the vehicle is equal to or lower than a predetermined threshold value. As a result, when it is relatively dark outside and / or inside the vehicle, the feet of the rear seat passengers getting on or off the vehicle are illuminated by the function of the illumination 303.

[0113] <Technique 15> In the display device according to any one of Techniques 11 to 14, when a passenger in the rear seat 22 gets on or off the vehicle, the transparent display 100 displays a message 304 directed to the passenger in the rear seat 22 in the second content 302. As a result, the rear seat passengers getting on or off the vehicle can view the message 304 displayed on the transparent display 100.

[0114] <Technique 16> In the display device according to any one of Techniques 11 to 15, when a passenger in the rear seat 22 gets on or off the vehicle, the transparent display 100 displays information indicating the position of the handrail 31 in the second content 302. This increases the likelihood that a rear-seat passenger getting in or out of the vehicle will grab the handrail 31, and can prevent the rear-seat passenger from touching the transparent display 100 consciously or unconsciously.

[0115] <Technology 17> In the display device according to any one of Technologies 11 to 16, when a passenger in the rear seat 22 gets in or out of the vehicle, the transparent display 100 displays a predetermined pattern in the second content 302. As a result, a rear-seat passenger getting in or out of the vehicle can visually recognize the transparent display 100 on which a predetermined pattern is displayed as the second content 302, and can prevent the rear-seat passenger from touching the transparent display 100 consciously or unconsciously.

[0116] <Technology 18> In the display device according to any one of Technologies 11 to 16, when a passenger in the rear seat 22 gets in or out of the vehicle, the transparent display 100 displays at least one of a swaying curtain, a wavy water surface, and a grassland swaying in the wind in the second content. Such second content 302 gives an impression that it is difficult to approach to a rear-seat passenger getting in or out of the vehicle, and thus can prevent the rear-seat passenger from touching and approaching the transparent display 100.

[0117] <Technology 19> In the display device according to any one of Technologies 11 to 18, the vehicle 1 includes a control unit (for example, the IVI device 114), and the control unit determines boarding and alighting of a passenger in the rear seat 22 based on schedule information of the passenger in the rear seat. As a result, it is possible to distinguish between a passenger who will board the vehicle and a passenger who will alight from the vehicle.

[0118] <Technology 20> In the display device according to any one of Technologies 11 to 19, after a passenger in the rear seat 22 has completed boarding or alighting, the transparent display 100 resumes displaying the first content 301. As a result, after the transparent display 100 switches the display from the first content 301 to the second content 302 and the boarding or alighting of the passenger is completed, the display of the first content 301 can be resumed.

[0119] As described above, the embodiments have been described with reference to the accompanying drawings, but the present disclosure is not limited to such examples. It is obvious that those skilled in the art can conceive of various changes, modifications, substitutions, additions, deletions, and equivalents within the scope described in the claims, and it is understood that they also belong to the technical scope of the present disclosure. Further, within the scope not departing from the gist of the invention, the components in the above-described embodiments may be arbitrarily combined.

Industrial Applicability

[0120] The technology of the present disclosure is useful for vehicles equipped with a display inside the vehicle.

Explanation of Signs

[0121] 1 Vehicle 2 Vehicle Body 3A First Wheel 3B Second Wheel 3C Third Wheel 3D Fourth Wheel 4 Front Window 11 Floor Portion 12 Ceiling Portion 13 Left Side Portion 14 Right Side Portion 15 Front Portion 16 Front Surface Portion 17 Rear Portion 18 Rear Surface Portion 21 Front Seat 22 Rear Seat 23 Rear Seat Door 31 Handrail 100 Transparent Display 102 Operation Unit 110 In-Vehicle Network 111 Communication Device 112 Vehicle Control Device 113 Seating Detection Device 114 IVI device 115 Image control device 301 First content 302 Second content 303 Lighting 304 Message 311 First display area 312 Second display area

Claims

1. A first wheel connected to the vehicle body, a second wheel connected to the vehicle body, a third wheel connected to the vehicle body, and a fourth wheel connected to the vehicle body, and at least comprising: a vehicle capable of traveling in a predetermined direction using the first wheel, the second wheel, the third wheel, and the fourth wheel, wherein the vehicle body has a floor surface portion and a ceiling surface portion arranged along the predetermined direction, a left side surface portion connecting the floor surface portion and the ceiling surface portion and arranged on the left side along the predetermined direction, a right side surface portion connecting the floor surface portion and the ceiling surface portion and arranged on the right side along the predetermined direction, a front surface portion connecting the floor surface portion and the ceiling surface portion and arranged at the front in the predetermined direction, a rear surface portion connecting the floor surface portion and the ceiling surface portion and arranged at the rear in the predetermined direction, at least one front seat arranged on the floor surface portion on the front surface side of the rear surface portion, at least one rear seat arranged on the floor surface portion on the rear surface side of the front surface portion, and a transparent display arranged between the rear seat and the front seat and having a variable light transmittance. A vehicle control method for the vehicle, wherein, when a passenger in the rear seat is on board, the transparent display displays first content, when boarding or alighting of the passenger in the rear seat occurs, the transparent display displays second content different from the first content, and makes the first light transmittance of a first display area greater than the second light transmittance of a second display area below the first display area. Vehicle control method.

2. The vehicle control method according to claim 1, wherein the second content is displayed in the second display area. Vehicle control method.

3. The vehicle control method according to claim 1, wherein at least a part of the second content provides a lighting function. Vehicle control method.

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

5. The vehicle control method according to claim 1, wherein when boarding or alighting of the passenger in the rear seat occurs, the transparent display displays a message directed to the passenger in the rear seat in the second content. Vehicle control method.

6. The vehicle control method according to claim 1, When boarding or alighting of the rear seat passenger occurs, the transparent display displays information indicating the position of the handrail in the second content. Vehicle control method.

7. The vehicle control method according to claim 1, When boarding or alighting of the rear seat passenger occurs, the transparent display displays a predetermined pattern in the second content. Vehicle control method.

8. The vehicle control method according to claim 1, When boarding or alighting of the rear seat passenger occurs, the transparent display, in the second content, flapping curtain, wavy water surface, and grassland swaying in the wind, displays at least one of them. Vehicle control method.

9. The vehicle control method according to claim 1, The vehicle is provided with a control unit, The control unit discriminates boarding and alighting of the rear seat passenger based on the schedule information of the rear seat passenger. Vehicle control method.

10. The vehicle control method according to claim 1, After the boarding or alighting of the rear seat passenger is completed, the transparent display resumes the display of the first content. Vehicle control method.

11. A first wheel connected to the vehicle body, A second wheel connected to the vehicle body, A third wheel connected to the vehicle body, A fourth wheel connected to the vehicle body, and at least includes them, A display device configured to be mounted on a vehicle capable of traveling in a predetermined direction using the first wheel, the second wheel, the third wheel, and the fourth wheel, The vehicle body is, A floor surface portion and a ceiling surface portion arranged along the predetermined direction, A left side surface portion connecting the floor surface portion and the ceiling surface portion and arranged on the left side surface along the predetermined direction, A right side surface portion connecting the floor surface portion and the ceiling surface portion and arranged on the right side surface along the predetermined direction, A front surface portion connecting the floor surface portion and the ceiling surface portion and arranged at the front with respect to the predetermined direction, A rear surface portion connecting the floor surface portion and the ceiling surface portion and arranged at the rear with respect to the predetermined direction, At least one front seat arranged on the floor surface portion on the front seat side from the rear surface portion, At least one rear seat arranged on the floor surface portion on the rear seat side from the front surface portion, A transparent display arranged between the rear seat and the front seat and having a variable light transmittance, and includes it. While the rear seat passenger is on board, the transparent display displays the first content. When boarding or alighting of the rear seat passenger occurs, the transparent display displays a second content different from the first content, and makes a first light transmittance of a first display area larger than a second light transmittance of a second display area below the first display area. Display device.

12. The display device according to claim 11, wherein the second content is displayed in the second display area. Display device.

13. The display device according to claim 11, wherein at least a part of the second content provides a lighting function. Display device.

14. The display device according to claim 13, wherein the lighting function is provided when an illuminance outside and / or inside the vehicle is equal to or lower than a predetermined threshold value. Display device.

15. The display device according to claim 11, wherein when boarding or alighting of the rear seat passenger occurs, the transparent display displays a message directed to the rear seat passenger in the second content. Display device.

16. The display device according to claim 11, wherein when boarding or alighting of the rear seat passenger occurs, the transparent display displays information indicating a position of a handrail in the second content. Display device.

17. The display device according to claim 11, wherein when boarding or alighting of the rear seat passenger occurs, the transparent display displays a predetermined pattern in the second content. Display device.

18. The display device according to claim 11, wherein when boarding or alighting of the rear seat passenger occurs, the transparent display, in the second content, a swaying curtain, a wavy water surface, and a grassland swaying in the wind, displays at least one of them. Display device.

19. The display device according to claim 11, wherein the vehicle includes a control unit, and the control unit discriminates boarding and alighting of the rear seat passenger based on schedule information of the rear seat passenger. Display device.

20. The display device according to claim 11, wherein after boarding or alighting of the rear seat passenger is completed, the transparent display resumes display of the first content. Display device.

Images