JP7842057B2 - vehicle - Google Patents

Description

This disclosure pertains to vehicles.

Conventionally, display devices with variable light transmittance are known. For example, Patent Document 1 discloses a display device installed in the interior of a vehicle, comprising a transparent display that displays an information image on a light-transmitting surface, and a light-shielding display that displays a light-shielding image with adjustable light transmittance. The display device acquires the intensity of direct light directed toward the transparent display, and adjusts the transmittance of the light-shielding image to be lower as the direct light becomes stronger.

Japanese Patent Publication No. 2020-79917

For example, a passenger in the back seat of a vehicle may want to rest temporarily to recover from physical and mental fatigue. However, conventional vehicle back seats are not designed for this purpose.

The purpose of this disclosure is to provide technology that supports the physical and mental recovery of a person sitting in the rear seat of a vehicle.

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, 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,
The floor portion includes at least one rear seat located on the rear side of the front portion,
The front section is equipped with glass that allows the front passengers to view the outside of the vehicle in the predetermined direction.
The vehicle body further includes a transparent display and a speaker that emits sound towards the rear seats, between the rear seats and the front seats.
The transparent display and the speaker are configured to play predetermined video content and audio, respectively.
The aforementioned predetermined video content comprises at least a first phase, a second phase following the first phase, and a third phase following the second phase.
In at least part of the first phase, the speaker outputs a sound prompting deep breathing, and the transparent display displays an object that operates at a predetermined interval.
We will provide the vehicle.

These comprehensive or specific embodiments may be implemented as systems, devices, methods, integrated circuits, computer programs, or recording media, or as any combination of systems, devices, methods, integrated circuits, computer programs, and recording media.

According to this disclosure, it is possible to support the physical and mental recovery of a person sitting in the back seat of a vehicle.

This shows an example of the vehicle configuration according to Embodiment 1, and is a plan view showing the interior of the vehicle from above. This shows an example of the vehicle configuration according to Embodiment 1, and is a side view showing the interior of the vehicle from the side. This diagram shows an example of the vehicle configuration according to Embodiment 1, viewed from the rear seat of the vehicle looking forward. Block diagram showing an example configuration of the fatigue recovery support system according to Embodiment 1. Graph showing examples of changes in the transmittance of the transparent display in each phase according to Embodiment 1. This figure shows a first example of video content displayed on a transparent display in the first phase according to Embodiment 1. This figure shows a second example of video content displayed on a transparent display in the first phase according to Embodiment 1. This figure shows a first example of video content displayed on a transparent display in the third phase according to Embodiment 1. This figure shows a second example of video content displayed on a transparent display in the third phase according to Embodiment 1. This figure shows an example of video content displayed on a transparent display in the first phase, in which a dimming film is provided on the rear door window according to Embodiment 2. This figure shows an example of video content displayed on a transparent display in the first phase, in which a light-blocking curtain is provided on the rear door window according to Embodiment 2. A diagram illustrating the time interval for scene switching in the third phase according to Embodiment 2.

The embodiments of this 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 unnecessarily verbose descriptions and to facilitate understanding for those skilled in the art. The accompanying drawings and the following description are provided to enable those skilled in the art to fully understand this disclosure and are not intended to limit the subject matter of the claims.

(Embodiment 1)
<Vehicle Configuration>
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 showing an example configuration of vehicle 1 according to Embodiment 1, with the view from the rear seat 22 looking forward. Next, the configuration of vehicle 1 will be described with reference to Figures 1, 2 and 3.

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. Furthermore, 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.

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. It is capable of traveling in a predetermined direction (e.g., along 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; it 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.

The vehicle body 2 comprises a floor section 11 and a ceiling section 12 arranged in a predetermined orientation.

The vehicle body 2 comprises a left side section 13 that connects the floor section 11 and the ceiling section 12 and is positioned on the left side along 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 along a predetermined direction.

The vehicle body 2 comprises a front section 16 that connects the floor section 11 and the ceiling section 12 and is positioned 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 positioned at the rear 17 in a predetermined direction.

The vehicle body 2 comprises at least one front seat 21 positioned on the floor portion 11, closer to the front portion 16 than the rear portion 18, and at least one rear seat 22 positioned on the floor portion 11, closer to the rear portion 18 than the front portion 16.

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

The vehicle body 2 further includes a rectangular transparent display 102 between the rear seat 22 and the front seat 21. The transparent display 102 is installed so that its rectangular longitudinal direction aligns with the horizontal direction (X-axis direction). The transparent display 102 comprises at least a self-emissive display 103 and a dimmable film 104 with variable light transmittance. The dimmable film may be interpreted as a sheet. For the sake of clarity, the following explanation may sometimes refer to changing the transmittance of the transparent display 102, but this may be interpreted as changing the transmittance of the dimmable film 104. Examples of the self-emissive display 103 include organic EL displays and LED displays.

A user seated in the rear seat 22 can see outside the vehicle through the transparent display 102 and the front windshield 4.

The transparent display 102 is configured to play predetermined video content. In this embodiment, the video content is described as a moving image, but the video content may also be a still image. Details of the video content will be described later.

Vehicle 1 comprises a front compartment 23 where front seats 21 are located, and a rear compartment 24 where rear seats 22 are located. Vehicle 1 further includes a bulkhead 31 separating the front compartment 23 and the rear compartment 24, on which a transparent display 102 is located.

Vehicle 1 is equipped with a light-emitting unit 107 inside the vehicle, whose color and intensity of light can be adjusted. The light-emitting unit 107 is positioned on at least one of the following areas of the bulkhead 31: the rear compartment side 32 of the bulkhead 31 on the rear compartment 24 side; the floor 11 adjacent to the rear compartment 24; the ceiling 12 adjacent to the rear compartment 24; the rear 18 adjacent to the rear compartment 24; the left side 13 adjacent to the rear compartment 24; and the right side 14 adjacent to the rear compartment 24. A portion of the light-emitting unit 107 is shown in Figure 3. An example of the light-emitting unit 107 is an LED (Light Emitting Diode) light.

Vehicle 1 is equipped with a fragrance generating unit 108 that emits fragrance. The fragrance generating unit 108 is, for example, located in the rear compartment 24. An example of the fragrance generating unit 108 is an aroma diffuser. Details of the fragrance generated by the fragrance generating unit 108 will be described later.

Vehicle 1 is equipped with speakers 106 in the rear compartment 24 of the vehicle. The speakers 106 may be installed above and below the transparent display 102, as shown in Figure 3. Furthermore, speakers 106 may also be installed in the rear seats 22 (not shown). At least some of the installed speakers 106 (for example, the speakers 106 installed in the rear seats 22) may be tweeters. At least some of the installed speakers 106 may be woofers.

Vehicle 1 is equipped with an operating unit 109 near the rear seats 22 inside the vehicle. The operating unit 109 may be a tablet terminal installed inside the vehicle. Alternatively, the operating unit 109 may be a smartphone owned by the user connected to Vehicle 1 via a wired or wireless connection. Details of the operations that the user can perform through the operating unit 109 will be described later.

<System Configuration>
Figure 4 is a block diagram showing an example configuration of the fatigue recovery support system according to Embodiment 1.

The fatigue recovery support system according to Embodiment 1, mounted on Vehicle 1, comprises an ECU 100, an IVI system 101, a transparent display 102, a self-emissive display 103, a dimmable film 104, an amplifier 105, a speaker 106, a light-emitting unit 107, a fragrance generating unit 108, and an operation unit 109. ECU is an abbreviation for Electronic Control Unit. These components can transmit and receive information via, for example, a vehicle network 110. Examples of the vehicle network 110 include CAN (Controller Area Network), LIN, or FlexRay.

The transparent display 102, self-emissive display 103, dimming film 104, speaker 106, light-emitting unit 107, fragrance-generating unit 108, and operating unit 109 have already been explained above, so their explanation will be omitted here.

The amplifier 105 amplifies the audio signal output from the speaker 106. The amplifier 105 may be high-resolution compatible. This allows for higher-quality audio output from the speaker 106.

IVI is an abbreviation for "In-Vehicle Information," and "Information" is a coined word combining "Information" and "Entertainment." The IVI system 101 is a system that provides information and entertainment to passengers through electronic devices installed in vehicle 1.

The ECU 100 receives information from the IVI system 101 and sends commands to the IVI system 101 via the vehicle network 110. Note that the vehicle 1 is not limited to one ECU 100; there may be multiple ECUs 100.

Furthermore, the ECU 100 may include non-volatile memory. Video content may be stored in the memory. Audio content (hereinafter referred to as audio content) may be stored in the memory in conjunction with the video content and output from the speaker 106. Content for changing the light transmittance of the dimming film 104 (hereinafter referred to as dimming content) in conjunction with the video content may be stored in the memory. Content for illuminating the light-emitting unit 107 (hereinafter referred to as light-emitting content) in conjunction with the video content may be stored in the memory. Content for generating fragrance from the fragrance-generating unit 108 (hereinafter referred to as fragrance content) in conjunction with the video content may be stored in the memory in advance. These contents may also be updated as needed.

The ECU 100 processes the playback of video content and displays it on the transparent display 102. The ECU 100, in conjunction with the playback of video content, transmits audio content to the amplifier 105 and outputs the audio content from the speaker 106. The ECU 100, in conjunction with the playback of video content, processes the change in the transmittance of the transparent display 102 based on the dimming content. The ECU 100, in conjunction with the playback of video content, processes the change in the light color and/or light intensity of the light-emitting unit 107 based on the light-emitting content. The ECU 100, in conjunction with the playback of video content, processes the change in whether or not to emit fragrance from the fragrance-generating unit 108, the type of fragrance to emit, and/or the intensity of the fragrance to emit, based on the fragrance content.

The ECU 100 receives information indicating the operation content (hereinafter referred to as "operation information") from the operation unit 109 and controls at least one of the transparent display 102, dimming film 104, amplifier 105, light-emitting unit 107, and fragrance generating unit 108 based on the operation information. For example, the ECU 100 starts or stops playback of video content by controlling the transparent display 102 based on the operation information. For example, the ECU 100 adjusts the volume of audio content by controlling the amplifier 105 based on the operation information. For example, the ECU 100 adjusts the maximum and/or minimum values of the transmittance by controlling the dimming film 104 based on the operation information. For example, the ECU 100 sets whether or not to allow the light-emitting unit 107 to emit light, and adjusts the light intensity, etc., by controlling the light-emitting unit 107 based on the operation information. For example, the ECU 100 controls the fragrance generating unit 108 based on operation information, setting whether or not to allow fragrance generation from the fragrance generating unit 108, and setting the fragrance intensity (e.g., the strength of the airflow for dispensing the fragrance). Note that the ECU 100 may be replaced with other terms such as processor, controller, control unit, or control circuit.

<Processing to support fatigue recovery>
Figure 5 is a graph showing examples of changes in the transmittance of the transparent display 102 in each phase according to Embodiment 1. In the graph shown in Figure 5, the horizontal axis represents time, the vertical axis represents transmittance, and the thick line 201 represents the change in transmittance. Figure 6 is a diagram showing a first example of video content displayed on the transparent display 102 in the first phase according to Embodiment 1. Figure 7 is a diagram showing a second example of video content displayed on the transparent display 102 in the first phase according to Embodiment 1. Figure 8 is a diagram showing a first example of video content displayed on the transparent display 102 in the third phase according to Embodiment 1. Figure 9 is a diagram showing a second example of video content displayed on the transparent display 102 in the third phase according to Embodiment 1.

Next, referring to Figures 5, 6, 7, 8, and 9, we will describe in detail the processes performed to support fatigue recovery for users sitting in the rear seat 22.

The video content is an image that changes over time and has at least a first phase, a second phase following the first phase, a third phase following the second phase, and a fourth phase following the third phase. That is, when the video content is played, the image is displayed on the transparent display 102 in the order of the first phase, second phase, third phase, and fourth phase. A light-blocking curtain (not shown) may be provided on the rear door window 5, and this curtain may be closed when the video content is played. Alternatively, a dimmable film with adjustable light transmittance may be provided on the rear door window 5, and the ECU 100 may automatically reduce the transmittance of the dimmable film when playing the video content. This allows the rear compartment 24 to be darkened. Next, each phase will be described in detail.

<Phase 1>
In the first phase, a video designed to promote relaxation for the user (viewer) seated in the rear seat 22 is displayed on the transparent display 102. The transmittance of the transparent display 102 at the end of the first phase (second transmittance) can be smaller than the transmittance of the transparent display 102 at the beginning of the first phase (first transmittance). For example, in the first phase, as shown in Figure 5, the transmittance of the transparent display 102 may change to decrease over time. This allows the user's gaze, which was initially directed at the scenery outside the car through the front windshield 4, to be gradually guided to the video content displayed on the transparent display 102, thereby smoothly directing the user's attention to the video content.

The relaxation-promoting video in the first half of the first phase may be a natural image including a forest and a river, as exemplified in Figure 6 (hereinafter referred to as "nature image 210"). Displaying such a nature image 210 can alleviate user tension and promote relaxation. The relaxation-promoting video in the second half of the first phase may be a video of the setting sun sinking below the horizon, as exemplified in Figure 7 (hereinafter referred to as "sunset image 220"). Displaying such a sunset image 220 can make the user aware of the end of an active day and promote relaxation.

The sunset image 220 may have a horizon or waterline along the longitudinal direction of the rectangular transparent display 102. The sunset image 220 may also include a circular, light-emitting portion (the sunset sun) that partially touches the horizon or waterline. The sunset image 220 may be configured such that, as viewed by a user sitting in the rear seat 22, the horizon or waterline of the sunset image 220 coincides with or is parallel to the boundary line 300 between the front windshield 4 and the dashboard 7.

As a result, the view of the outside of the car seen through the front windshield 4 above the boundary line 300 overlaps with the portion of the sky above the horizon or waterline in the sunset image 220, and the dashboard 7 below the boundary line 300 overlaps with the portion of the ground or sea below the horizon or waterline in the sunset image 220. Typically, the portion of the ground or sea below the horizon or waterline in the sunset image 220 is darker than the portion of the sky above the horizon or waterline in the sunset image 220, so the dashboard 7 becomes less visible through the transparent display 102. Therefore, the sense of unease caused to the user by the overlap between the video content displayed on the transparent display 102 and the view seen through the transparent display 102 can be reduced. In addition, the user's attention, which was focused on the view of the outside of the car seen through the front windshield 4, can be smoothly guided to the video content displayed on the transparent display 102.

In the first phase, when a natural image 210 is displayed, sound corresponding to the natural image 210 is output from speaker 106, light-emitting unit 107 emits light with a color and/or intensity corresponding to the natural image 210, and a fragrance corresponding to the natural image 210 is emitted from fragrance-generating unit 108. Also in the first phase, when a sunset image 220 is displayed, sound corresponding to the sunset image 220 is output from speaker 106, light-emitting unit 107 emits light with a color and/or intensity corresponding to the sunset image 220, and a fragrance corresponding to the sunset image 220 is emitted from fragrance-generating unit 108. This promotes relaxation not only through sight, but also through hearing and smell.

<Phase 2>
In the second phase, a video designed to induce sleep (i.e., sleep-inducing) is displayed on the transparent display 102 to the user (viewer) sitting in the rear seat 22. The video designed to induce sleep may be, for example, a video with relatively low brightness. Alternatively, in the second phase, video content does not need to be displayed on the transparent display 102.

The average transmittance of the transparent display 102 during the first phase (first average transmittance) may be greater than the average transmittance of the transparent display 102 during the second phase (second average transmittance). In other words, the average transmittance of the transparent display 102 during the second phase (second average transmittance) may be less than the average transmittance of the transparent display 102 during the first phase (first average transmittance). For example, the transmittance of the transparent display 102 in the second phase may be the minimum value within the settable range of transmittance. This makes the rear chamber 24 relatively dark in the second phase, allowing the user, who was relaxed in the first phase, to be guided into sleep.

In the second phase, sound corresponding to the sleep-inducing video is output from speaker 106, light-emitting unit 107 emits light with a color and/or intensity corresponding to the sleep-inducing video, and a scent corresponding to the sleep-inducing video is emitted from scent-generating unit 108. Alternatively, in the second phase, sound may not be output from speaker 106, and light-emitting unit 107 may not emit light. This allows the user to be guided to sleep not only through sight, but also through hearing and smell.

<Phase 3>
In the third phase, an image designed to wake up the user (viewer) sitting in the rear seat 22 is displayed on the transparent display 102. The transmittance of the transparent display 102 in the third phase may be a third transmittance that is smaller than the first transmittance. Alternatively, the third transmittance may be equal to the second transmittance. For example, the transmittance of the transparent display 102 in the third phase may be the minimum value within the range of transmittance that can be set.

The first half of the third phase of the awakening-promoting video may be an image of the rising sun (hereinafter referred to as "sunrise video 230"), as exemplified in Figure 8. Displaying such a sunrise video 230 can make the user aware of the start of an active day and promote their awakening. The second half of the third phase of the awakening-promoting video may be an image including a single flower (hereinafter referred to as "flower video 240"), as exemplified in Figure 9. Displaying such a flower video 240 can attract the user's attention and promote their awakening.

The image of the rising sun 230 may have a horizon or horizontal line along the longitudinal direction of the rectangular transparent display 102. The image of the rising sun 230 may also include a circular, light-emitting portion (the rising sun) that partially touches the horizon or horizontal line. The image of the rising sun 230 may be configured such that, as viewed by a user sitting in the rear seat 22, the horizon or horizontal line of the image of the rising sun 230 coincides with or is parallel to the boundary line 300 between the front windshield 4 and the dashboard 7.

As a result, the view of the outside of the car seen through the front windshield 4 above the boundary line 300 overlaps with the portion of the sky above the horizon or waterline in the sunrise image 230, and the dashboard 7 below the boundary line 300 overlaps with the portion of the ground or sea below the horizon or waterline in the sunrise image 230. Typically, the portion of the ground or sea below the horizon or waterline in the sunrise image 230 is darker than the portion of the sky above the horizon or waterline in the sunrise image 230, so the dashboard 7 becomes less visible through the transparent display 102. Therefore, the sense of unease caused to the user by the overlap between the video content displayed on the transparent display 102 and the view seen through the transparent display 102 can be reduced.

In the third phase, when the image of the sunrise 230 is displayed, sound corresponding to the image of the sunrise 230 is output from the speaker 106, the light-emitting unit 107 illuminates with the color and/or intensity corresponding to the image of the sunrise 230, and a fragrance corresponding to the image of the sunrise 230 is emitted from the fragrance-generating unit 108. Also in the third phase, when the image of a flower 240 is displayed, sound corresponding to the image of the flower 240 is output from the speaker 106, the light-emitting unit 107 illuminates with the color and/or intensity corresponding to the image of the flower 240, and a fragrance corresponding to the image of the flower 240 is emitted from the fragrance-generating unit 108. This stimulates the user's awakening not only through sight, but also through hearing and smell.

<Phase 4>
In the fourth phase, the transparent display 102 displays images that do not induce relaxation, sleep, or wakefulness in the user (viewer) sitting in the rear seat 22. The images displayed in the fourth phase may be, for example, images with relatively high brightness. Alternatively, no video content may be displayed on the transparent display 102 in the fourth phase.

After a certain period of time has elapsed since the start of the fourth phase, the transmittance of the transparent display 102 may be a fourth transmittance, which is greater than the third transmittance. That is, the fourth transmittance may be relatively high. For example, in the fourth phase, as shown in Figure 5, the transmittance of the transparent display 102 may change to increase over time. This allows the user's gaze, which was initially directed at the video content displayed on the transparent display 102, to be gradually guided to the scenery outside the vehicle through the front windshield 4, smoothly directing the user's attention to the scenery outside the vehicle.

The average transmittance of the transparent display 102 during the fourth phase (third average transmittance) may be greater than the average transmittance of the transparent display 102 during the third phase (fourth average transmittance). For example, the transmittance of the transparent display 102 in the fourth phase may increase over time, as shown in Figure 5, and finally reach the maximum value within the settable range of transmittance. This increases the transmittance of the transparent display 102, allowing the user's gaze, which was directed towards the video content in the third phase, to be gradually guided through the front windshield 4 to the scenery outside the vehicle, smoothly directing the user's attention to the real scenery outside the vehicle.

In the fourth phase, sound is not output from the speaker 106, the light-emitting unit 107 does not emit light, and fragrance does not need to be emitted from the fragrance-generating unit 108.

<About Transmittance>
If the rear compartment 24 is made completely dark, making it impossible to see outside the vehicle at all, the user may be more prone to motion sickness. Therefore, the minimum transmittance of the transparent display 102 may be greater than 0. In other words, the transparent display 102 may be configured not to completely block out light from outside the vehicle. The minimum transmittance of the transparent display 102 may be arbitrarily changed. For example, the minimum transmittance of the transparent display 102 when a user prone to motion sickness is sitting in the rear seat 22 may be set higher than the minimum transmittance of the transparent display 102 when a user who is not prone to motion sickness is sitting in the rear seat 22.

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

<Technology A1>
Vehicle 1 is,
The first wheel 3A connected to the car body 2,
The second wheel 3B connected to the aforementioned vehicle body 2,
The third wheel 3C connected to the vehicle body 2,
The vehicle body 2 is connected to at least a fourth wheel 3D,
The vehicle 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 aforementioned vehicle body 2 is
The floor surface portion 11 and the ceiling surface portion 12 are arranged along the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the left side portion 13 is positioned on the left side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the right side portion 14 is positioned on the right side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the front portion 16 is positioned on the front portion 15 in the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the rear portion 18 is positioned on the rear portion 17 in the predetermined orientation,
In the floor portion 11, at least one front seat 21 is positioned on the front portion 16 side of the rear portion 18,
The floor portion 11 includes at least one rear seat 22 positioned on the rear portion 18 side of the front portion 16,
The front section 16 is equipped with glass (for example, a front windshield 4) that allows the outside of the vehicle to be viewed from the front seats 21 in the predetermined direction.
The vehicle body 2 further includes a transparent display 102 having variable light transmittance between the rear seat 22 and the front seat 21.
From the rear seat 22, it is possible to see outside the vehicle through the transparent display 102 and the glass (for example, the front windshield 4).
The transparent display 102 is configured to play predetermined video content.
The aforementioned predetermined video content comprises at least a first phase, a second phase following the first phase, a third phase following the second phase, and a fourth phase following the third phase.
At the beginning of the first phase, the variable transmittance of the transparent display is a first transmittance,
At the end of the first phase, the variable transmittance of the transparent display is a second transmittance that is smaller than the first transmittance.

<Technology A2>
In the vehicle 1 described in Technical A1,
In the third phase of the predetermined video content, the variable transmittance of the transparent display is a third transmittance that is smaller than the first transmittance.
After a certain period of time has elapsed since the start of the fourth phase, the variable transmittance of the transparent display is a fourth transmittance that is greater than the third transmittance.

<Technology A3>
In the vehicle 1 described in Technical A2,
The third transmittance is equal to the second transmittance.

<Technology A4>
In the vehicle 1 described in any one of the three technical items A1 to A3,
The first phase of the predetermined video content is to encourage the viewer to relax,
The second phase of the predetermined video content is to induce sleep in the viewer.
The third phase of the predetermined video content is to stimulate the viewer to awaken.
The fourth phase of the predetermined video content does not induce relaxation, sleep, or wakefulness in the viewer.

<Technology A5>
In the vehicle 1 described in any one of the technical items A1 to A4,
The first average transmittance of the variable transmittance of the transparent display 102, the average of the predetermined video content in the first phase, is:
The variable transmittance of the transparent display 102 is greater than the second average transmittance of the predetermined video content in the second phase.

<Technology A6>
In the vehicle 1 described in any one of the technical items A1 to A4,
The third average transmittance of the variable transmittance of the transparent display 102, the average of the predetermined video content in the fourth phase, is:
The variable transmittance of the transparent display 102 is greater than the fourth average transmittance of the predetermined video content in the third phase.

<Technology A7>
In the vehicle 1 described in any one of the technical items A1 to A6,
The transparent display 102 comprises at least a self-emissive display 103 and a sheet with variable light transmittance (for example, a dimmable film 104).

<Technology A8>
In the vehicle 1 described in any one of the technical items A1 to A7,
The front compartment 23 in which the front seat 21 is located,
The rear compartment 24 in which the aforementioned rear seat 22 is located,
The system further includes a partition wall 31 installed to separate the front chamber 23 and the rear chamber 24, on which the transparent display 102 is located,
The rear chamber side portion 32 of the partition wall 31 on the rear chamber 24 side,
The floor surface portion 11 adjacent to the rear chamber 24,
The ceiling surface portion 12 adjacent to the rear chamber 24,
The rear surface portion 18 in contact with the rear chamber 24,
The left side portion 13 that is in contact with the rear chamber 24, or the right side portion 14 that is in contact with the rear chamber 24,
It comprises a light-emitting section 107 located in at least one of which has adjustable light color and light intensity,
The light color and/or intensity of the light emitted from the light-emitting unit 107 changes in accordance with the predetermined video content and the passage of time of the predetermined video content.

<Technology A9>
In the vehicle 1 described in any one of the technical items A1 to A8,
It is equipped with a fragrance generating unit 108 that generates fragrance,
The fragrance generated by the fragrance generating unit 108 changes in accordance with the predetermined video content and the passage of time of the predetermined video content.

<Technology B1>
Vehicle 1 has a first wheel 3A connected to the body 2,
The second wheel 3B connected to the aforementioned vehicle body 2,
The third wheel 3C connected to the vehicle body 2,
The vehicle body 2 is connected to at least a fourth wheel 3D,
The vehicle 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 aforementioned vehicle body 2 is
The floor surface portion 11 and the ceiling surface portion 12 are arranged along the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the left side portion 13 is positioned on the left side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the right side portion 14 is positioned on the right side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the front portion 16 is positioned on the front portion 15 in the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the rear portion 18 is positioned on the rear portion 17 in the predetermined orientation,
In the floor portion 11, at least one front seat 21 is positioned on the front portion 16 side of the rear portion 18,
The floor portion 11 includes at least one rear seat 22 positioned on the rear portion 18 side of the front portion 16,
The front section 16 is equipped with glass (for example, a front windshield 4) that allows the outside of the vehicle to be viewed from the front seats 21 in the predetermined direction.
The vehicle body 2 further includes a rectangular transparent display 102 between the rear seat 22 and the front seat 21.
The transparent display 102 is installed so that the longitudinal direction of the rectangle is aligned with the horizontal direction.
From the rear seat 22, it is possible to see outside the vehicle through the transparent display 102 and the glass (for example, the front windshield 4).
The transparent display 102 is configured to play predetermined video content.
The aforementioned predetermined video content comprises at least a first phase, a second phase following the first phase, and a third phase following the second phase.
In at least a portion of the first phase, the image includes a horizon or horizontal line along the longitudinal direction of the rectangle.

<Technology B2>
In the vehicle 1 described in Technical B1,
The image having the horizon or waterline displays a circular, light-emitting portion that partially touches the horizon or waterline.

<Technical B3>
In the vehicle 1 described in Technical B2,
In the aforementioned image having a horizon or waterline, the circular, light-emitting portion represents the sun.

<Technology B4>
In the vehicle 1 described in any one of the three technical items B1 to B3,
The first phase of the predetermined video content is to encourage the viewer to relax,
The second phase of the predetermined video content is to induce sleep in the viewer.
The third phase of the predetermined video content stimulates the viewer to become aroused.

<Technology B5>
In the vehicle 1 described in any one of the technical items 1 to B4,
In at least a portion of the third phase, the image includes a horizon or horizontal line along the longitudinal direction of the rectangle,
The image having the horizon or waterline displays a circular, light-emitting portion that partially touches the horizon or waterline.

<Technology B6>
In the vehicle 1 described in Technical B5,
In the aforementioned image having a horizon or waterline, the circular, light-emitting portion represents the sun.

<Technology B7>
In the vehicle 1 described in any one of the technical items B1 to B6,
The transparent display 102 comprises at least a self-emissive display 103 and a sheet with variable light transmittance (for example, a dimmable film).

<Technology B8>
In the vehicle 1 described in any one of the technical items B1 to B7,
The front compartment 23 in which the front seat 21 is located,
The rear compartment 24 in which the aforementioned rear seat 22 is located,
The system further includes a partition wall 31 installed to separate the front chamber 23 and the rear chamber 24, on which the transparent display 102 is located,
The rear chamber side portion 32 of the partition wall 31 on the rear chamber 24 side,
The floor surface portion 11 adjacent to the rear chamber 24,
The ceiling surface portion 12 adjacent to the rear chamber 24,
The rear surface portion 18 in contact with the rear chamber 24,
The left side portion 13 that is in contact with the rear chamber 24, or the right side portion 14 that is in contact with the rear chamber 24,
It comprises a light-emitting section 107 located in at least one of which has adjustable light color and light intensity,
The light color and/or intensity of the light emitted from the light-emitting unit 107 changes in accordance with the predetermined video content and the passage of time of the predetermined video content.

<Technology B9>
In the vehicle 1 described in any one of the technical items B1 to B8,
It is equipped with a fragrance generating unit 108 that generates fragrance,
The fragrance generated by the fragrance generating unit 108 changes in accordance with the predetermined video content and the passage of time of the predetermined video content.

(Embodiment 2)
Embodiment 2 describes additions or modifications to the content described in Embodiment 1. Therefore, unless otherwise specified, all the content of Embodiment 1 is incorporated into Embodiment 2.

<Phase 1>
Figure 10 shows an example of video content displayed on the transparent display 102 in the first phase, in which a dimming film 401 is provided on the rear door window 5 according to Embodiment 2. Figure 11 shows an example of video content displayed on the transparent display 102 in the first phase, in which a light-blocking curtain 411 is provided on the rear door window 5 according to Embodiment 2.

As shown in Figure 10, a dimming film 401 may be provided on the rear door window 5. In addition, a dimming film 402 (see Figure 1) may be provided on the rear window 6. When the first phase begins, the ECU 100 may control the transmittance of the dimming film 401 on the rear door window 5 and the dimming film 402 on the rear window 6 to be lower than the transmittance before the first phase began (for example, by changing the transmittance to the minimum value). This allows the rear compartment 24 to be darkened.

Alternatively, as shown in Figure 11, a light-blocking curtain 411 may be provided on the rear door window 5. In addition, a light-blocking curtain (not shown) may be provided on the rear window 6. The ECU 100 may then automatically close the light-blocking curtain 411 on the rear door window 5 and the light-blocking curtain (not shown) on the rear window 6 when starting the first phase. This allows the rear compartment 24 to be darkened.

After darkening the rear chamber 24 in this manner, the ECU 100 outputs a voice prompt from speaker 106, such as "Please take a slow, deep breath," during at least part of the first phase (for example, immediately after the start of the first phase), encouraging deep breathing.

Next, as the first phase, the ECU 100 displays a video to promote relaxation on the transparent display 102. The video to promote relaxation may include, in addition to the nature video 210 and sunset video 220 described in Embodiment 1, a video that includes an object operating at a predetermined cycle. The object operating at a predetermined cycle may be a rotating waterwheel. That is, in the first phase, a video including a waterwheel 421 rotating at a predetermined cycle (hereinafter referred to as the waterwheel video 420), as illustrated in Figure 10 or Figure 11, may be displayed as the video to promote relaxation. The waterwheel video 420 may be live-action footage or computer graphics (CG). The waterwheel video 420 may be displayed after the nature video 210 described in Embodiment 1. However, the waterwheel video 420 may be displayed at any point in the first phase.

In this way, by outputting an announcement encouraging deep breathing and displaying a video 420 of a water turbine, including the water turbine 421 that rotates at a predetermined cycle, the user in the rear seat 22 can be guided to take deep breaths at regular intervals. As a result, user relaxation can be promoted, and drowsiness can be increased.

Furthermore, the object operating at a predetermined cycle is not limited to a waterwheel; for example, it could be a windmill or waves crashing at predetermined time intervals. That is, in the first phase, as a video to promote relaxation, a video including a windmill rotating at a predetermined cycle (hereinafter referred to as the windmill video) or a video including waves crashing at predetermined time intervals (hereinafter referred to as the wave video) may be displayed. The windmill video or wave video may be live-action or computer-generated.

The relaxing video displayed in the first phase may be a video that does not focus on any specific object (e.g., a natural landscape), as illustrated in Figure 6 or Figure 10. Displaying such a video that does not focus on any specific object makes it easier for the user to relax and can increase their drowsiness. The video that does not focus on any specific object may be a wide-angle shot.

<Phase 3>
Figure 12 is a diagram illustrating the time interval for scene switching in the third phase according to Embodiment 2.

As shown in Figure 12, the average time interval between scene changes in the third phase (hereinafter referred to as the second average time interval) may be shorter than the average time interval between scene changes in the first phase (hereinafter referred to as the first average time interval). In other words, the average time interval between scene changes in the first phase (the first average time interval) may be longer than the average time interval between scene changes in the third phase (the second average time interval). In this way, by displaying video content with relatively short scene changes in the third phase, a strong visual stimulus can be provided to the rear-seat user 22, promoting user alertness. The first average time interval may be the value obtained by dividing the total time of each scene in the first phase by the number of scenes included in the first phase. The second average time interval may be the value obtained by dividing the total time of each scene in the third phase by the number of scenes included in the third phase.

In at least part of the third phase, the ECU 100 may output bird sounds from the speaker 106. By outputting bird sounds in the third phase, the user can be reminded of the morning and stimulate their awakening.

The video displayed in the third phase to stimulate alertness may be a video focusing on a specific object (for example, a single flower), as illustrated in Figure 9. Displaying such a video focusing on a specific object makes it easier for the user to concentrate and stimulates their alertness. The video focusing on a specific object may be a zoomed-in video.

The ECU 100 may, at the start or end of the third phase, control the light transmittance of the dimming film 401 on the rear door window 5 and the dimming film 402 on the rear window 6 to a higher level than the transmittance during the second phase (for example, by changing the transmittance to the maximum value). This brightens the rear compartment 24 and helps to wake the user.

Alternatively, the ECU 100 may control the opening of the shading curtain 411 of the rear door window 5 and the shading curtain (not shown) of the rear window 6 when starting or ending the third phase. This brightens the rear compartment 24 and helps to wake the user.

<Light-blocking properties of the rear room>
As described in Embodiment 1, a partition wall 31 separating the front seat 21 and the rear seat 22 is provided between the front seat 21 and the rear seat 22, and a transparent display 102 is positioned on the partition wall 31. As shown in Figure 10 or Figure 11, the transparent display 102 may be positioned to fit within the partition wall 31. Hereinafter, the portion of the partition wall 31 other than the transparent display 102 will be referred to as the outer frame 450.

The rear seat 22 passengers can see outside the vehicle through the transparent display 102 and the front windshield 4. The transparent display 102 has a variable light transmittance that can be changed between a first light transmittance and a second light transmittance greater than the first light transmittance. The variable light transmittance changes in accordance with the video content played on the transparent display 102 and the passage of time of the video content.

The transparent display 102 comprises at least a self-emissive display 103 and a sheet (dimmable film 104) with variable light transmittance.

In the partition wall 31, the average transmittance (hereinafter referred to as the third light transmittance) in the portion other than the transparent display 102 (the outer frame 450) can be made smaller than the first light transmittance. That is, the third light transmittance of the outer frame 450 may be relatively small. This suppresses light from outside the vehicle from passing through the outer frame 450 and entering the rear compartment 24, thereby darkening the rear compartment 24. The outer frame 450 may be made of dimmable glass. In this case, the ECU 100 may control the transmission of the outer frame 450 (dimmable glass) when starting the first phase. Alternatively, the outer frame 450 may simply be made of a material with high light-shielding properties.

The average light transmittance of the rear surface portion 18 in contact with the rear compartment 24 (hereinafter referred to as the fourth light transmittance) can be set lower than the first light transmittance. For example, the fourth light transmittance of the rear window 6 may be relatively low. This suppresses light from outside the vehicle from passing through the rear window 6 and entering the rear compartment 24, thereby darkening the rear compartment 24. If a light-adjusting film 402 is provided on the rear window 6, the ECU 100 may control the system to lower the transmittance of the light-adjusting film 402 when starting the first phase. If a light-blocking curtain (not shown) is provided on the rear window 6, the ECU 100 may control the system to close the light-blocking curtain when starting the first phase. The light-blocking curtain may also be closed manually. Alternatively, a highly light-blocking sheet may be applied to the rear window 6.

The average light transmittance (hereinafter referred to as the fifth light transmittance) on the left side surface 13 adjacent to the rear compartment 24 can be set lower than the first light transmittance. For example, the fifth light transmittance of the rear door window 5A may be relatively low. This suppresses light from outside the vehicle from passing through the rear door window 5A and entering the rear compartment 24, thereby darkening the rear compartment 24. If a dimming film 401A is provided on the rear door window 5A, the ECU 100 may control the system to lower the transmittance of the dimming film 401A when starting the first phase. If a light-blocking curtain 411A is provided on the rear door window 5A, the ECU 100 may control the system to close the light-blocking curtain 411A when starting the first phase. The light-blocking curtain 411A may also be closed manually. Alternatively, a highly light-blocking sheet may be applied to the rear door window 5A.

The average light transmittance (hereinafter referred to as the sixth light transmittance) on the right side surface 14 adjacent to the rear compartment 24 can be set lower than the first light transmittance. For example, the sixth light transmittance of the rear door window 5B may be relatively low. This suppresses light from outside the vehicle from passing through the rear door window 5B and entering the rear compartment 24, thereby darkening the rear compartment 24. If a dimming film 401B is provided on the rear door window 5B, the ECU 100 may control the system to lower the transmittance of the dimming film 401B when starting the first phase. If a light-blocking curtain 411B is provided on the rear door window 5B, the ECU 100 may control the system to close the light-blocking curtain 411B when starting the first phase. The light-blocking curtain 411B may also be closed manually. Alternatively, a highly light-blocking sheet may be applied to the rear door window 5B.

(Summary of Embodiment 2)
The following technology is disclosed based on the description of Embodiment 2 above.

<Technology C1>
Vehicle 1 is,
The first wheel 3A connected to the car body 2,
The second wheel 3B connected to the aforementioned vehicle body 2,
The third wheel 3C connected to the vehicle body 2,
The vehicle body 2 is connected to at least a fourth wheel 3D,
The vehicle 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 aforementioned vehicle body 2 is
The floor surface portion 11 and the ceiling surface portion 12 are arranged along the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the left side portion 13 is positioned on the left side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the right side portion 14 is positioned on the right side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the front portion 16 is positioned on the front portion 15 in the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the rear portion 18 is positioned on the rear portion 17 in the predetermined orientation,
In the floor portion 11, at least one front seat 21 is positioned on the front portion 16 side of the rear portion 18,
The floor portion 11 includes at least one rear seat 22 positioned on the rear portion 18 side of the front portion 16,
The front section 16 is equipped with glass (for example, a front windshield 4) that allows the outside of the vehicle to be viewed from the front seats 21 in the predetermined direction.
The vehicle body 2 further includes a transparent display 102 and a speaker 106 that emits sound toward the rear seat 22, between the rear seat 22 and the front seat 21.
The display and the speaker 106 are configured to play predetermined video content and audio, respectively.
The aforementioned predetermined video content comprises at least a first phase, a second phase following the first phase, and a third phase following the second phase.
In at least part of the first phase, the speaker 106 outputs a sound prompting deep breathing, and the display shows an object that operates at a predetermined interval.

<Technology C2>
In the vehicle 1 described in Technical C1,
The object that operates at the predetermined period is a rotating water turbine 421 or wind turbine.

<Technology C3>
In the vehicle 1 described in Technical C1,
The object that operates at the predetermined period is a wave that crashes at predetermined time intervals.

<Technology C4>
In the vehicle 1 described in any one of the three technical items C1 to C3,
The first phase of the predetermined video content is to encourage the viewer to relax,
The second phase of the predetermined video content is to induce sleep in the viewer.
The third phase of the predetermined video content stimulates the viewer to become aroused.

<Technology C5>
In the vehicle 1 described in any one of the technical items C1 to C4,
The front compartment 23 in which the front seat 21 is located,
The rear compartment 24 in which the aforementioned rear seat 22 is located,
The system further includes a partition wall 31, which is installed to separate the front chamber 23 and the rear chamber 24, and on which the transparent display is located,
The rear chamber side portion 32 of the partition wall 31 on the rear chamber 24 side,
The floor surface portion 11 adjacent to the rear chamber 24,
The ceiling surface portion 12 adjacent to the rear chamber 24,
The rear surface portion 18 in contact with the rear chamber 24,
The left side portion 13 that is in contact with the rear chamber 24, or the right side portion 14 that is in contact with the rear chamber 24,
It comprises a light-emitting section 107 located in at least one of which has adjustable light color and light intensity,
The light color and/or intensity of the light emitted from the light-emitting unit 107 changes in accordance with the predetermined video content and the passage of time of the predetermined video content.

<Technology C6>
In the vehicle 1 described in any one of the technical items C1 to C5,
It is equipped with a fragrance generating unit 108 that generates fragrance,
The fragrance generated by the fragrance generating unit 108 changes in accordance with the predetermined video content and the passage of time of the predetermined video content.

<Technology D1>
Vehicle 1 is,
The first wheel 3A connected to the car body 2,
The second wheel 3B connected to the aforementioned vehicle body 2,
The third wheel 3C connected to the vehicle body 2,
The vehicle body 2 is connected to at least a fourth wheel 3D,
The vehicle 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 aforementioned vehicle body 2 is
The floor surface portion 11 and the ceiling surface portion 12 are arranged along the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the left side portion 13 is positioned on the left side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the right side portion 14 is positioned on the right side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the front portion 16 is positioned on the front portion 15 in the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the rear portion 18 is positioned on the rear portion 17 in the predetermined orientation,
In the floor portion 11, at least one front seat 21 is positioned on the front portion 16 side of the rear portion 18,
The floor portion 11 includes at least one rear seat 22 positioned on the rear portion 18 side of the front portion 16,
The front section 16 is equipped with glass (for example, a front windshield 4) that allows the outside of the vehicle to be viewed from the front seats 21 in the predetermined direction.
The vehicle body 2 further includes a transparent display 102 between the rear seat 22 and the front seat 21, which has a variable light transmittance that can be changed between a first light transmittance and a second light transmittance that is greater than the first light transmittance.
From the rear seat 22, it is possible to see outside the vehicle through the transparent display 102 and the glass.
The variable light transmittance changes in accordance with the video content played on the transparent display 102 and the passage of time of the video content.

<Technology D2>
In the vehicle 1 described in Technical D1,
The transparent display 102 comprises at least a self-emissive display 103 and a sheet with variable light transmittance (for example, a dimmable film 104).

<Technical D3>
In the vehicle 1 described in Technology D1 or Technology D2,
The front seat 21 is positioned in the front compartment 23 which is in contact with at least the front section 16,
The rear seat 22 is positioned in the rear compartment 24 which is in contact with at least the rear surface 18,
The system further comprises a partition wall 31 positioned between the front chamber 23 and the rear chamber 24, separating the front chamber 23 and the rear chamber 24, and on which the transparent display 102 is located,
In the partition wall 31, the average light transmittance in the portion other than the transparent display 102 (for example, the outer frame 450) is the third light transmittance,
The third light transmittance can be made smaller than the first light transmittance.

<Technical D4>
In the vehicle 1 described in Technical D3,
The average light transmittance at the rear surface portion 18 in contact with the rear chamber 24 is the fourth light transmittance,
The fourth light transmittance can be set to be smaller than the first light transmittance.

<Technology D5>
In the vehicle 1 described in Technology D3 or Technology D4,
The average light transmittance on the left side surface portion 13 adjacent to the rear chamber 24 is the fifth light transmittance,
The fifth light transmittance can be set to be smaller than the first light transmittance.

<Technology D6>
In the vehicle 1 described in any one of Technical D3 to Technical D5,
The average light transmittance on the right side surface portion 14 in contact with the rear chamber 24 is the sixth light transmittance,
The sixth light transmittance can be set to be smaller than the first light transmittance.

<Technology D7>
In the vehicle 1 described in any one of the technical items D3 to D6,
A partition wall 31 adjacent to the rear chamber 24,
The floor surface 11 adjacent to the rear chamber 24,
The ceiling surface portion 12 adjacent to the rear chamber 24,
The rear surface portion 18 in contact with the rear chamber 24,
The left side portion 13 that is in contact with the rear chamber 24, or the right side portion 14 that is in contact with the rear chamber 24,
It comprises a light-emitting section 107 located in at least one of which has adjustable light color and light intensity,
The light color and/or intensity of the light emitted from the light-emitting unit 107 changes in accordance with the video content played on the transparent display 102 and the passage of time of the video content.

<Technology D8>
In the vehicle 1 described in Technical D3 to Technical D7,
It is equipped with a fragrance generating unit 108 that generates fragrance,
The fragrance generated by the fragrance generating unit 108 changes in accordance with the video content played on the transparent display 102 and the passage of time of the video content.

<Technology D9>
A transparent display 102 installed in vehicle 1,
The aforementioned vehicle 1 is
The first wheel 3A connected to the car body 2,
The second wheel 3B connected to the aforementioned vehicle body 2,
The third wheel 3C connected to the vehicle body 2,
The vehicle body 2 is connected to at least a fourth wheel 3D,
The vehicle 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 aforementioned vehicle body 2 is
The floor surface portion 11 and the ceiling surface portion 12 are arranged along the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the left side portion 13 is positioned on the left side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the right side portion 14 is positioned on the right side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the front portion 16 is positioned on the front portion 15 in the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the rear portion 18 is positioned on the rear portion 17 in the predetermined orientation,
In the floor portion 11, at least one front seat 21 is positioned on the front portion 16 side of the rear portion 18,
In the floor portion 11, at least one rear seat 22 is positioned on the rear portion 18 side from the front portion 16,
The front section 16 includes glass (for example, a front windshield 4) that allows the outside of the vehicle to be viewed from the front seats 21 in the predetermined direction,
The transparent display 102 is positioned between the rear seat and the front seat of the vehicle body 2, and can be positioned so that the outside of the vehicle can be seen from the rear seat through the transparent display and the glass.
It has a variable light transmittance that can be changed between a first light transmittance and a second light transmittance that is greater than the first light transmittance.
The variable light transmittance changes in accordance with the video content being played and the passage of time of the video content.

<Technology D10>
In the transparent display 102 described in Technical D9,
The system comprises at least a self-emissive display 103 and a sheet with variable light transmittance (e.g., a dimmable film 104).

<Technology D11>
In the transparent display 102 described in Technical D9,
The front seat 21 is positioned in the front compartment 23 which is in contact with at least the front section 16,
The rear seat 22 is positioned in the rear compartment 24 which is in contact with at least the rear surface 18,
The vehicle 1 is further provided with a partition wall positioned between the front chamber 23 and the rear chamber 24, separating the front chamber 23 and the rear chamber 24, and on which the transparent display 102 is located.
In the partition wall 31, the average light transmittance in the portion other than the transparent display 102 (for example, the outer frame 450) is the third light transmittance,
The third light transmittance can be made smaller than the first light transmittance.

<Technology D12>
In the transparent display 102 described in Technical D11,
The average light transmittance at the rear surface portion 18 in contact with the rear chamber 24 is the fourth light transmittance,
The fourth light transmittance can be set to be smaller than the first light transmittance.

<Technology D13>
In the transparent display 102 described in Technology D11 or Technology D12,
The average light transmittance on the left side surface portion 13 adjacent to the rear chamber 24 is the fifth light transmittance,
The fifth light transmittance can be set to be smaller than the first light transmittance.

<Technology D14>
In the transparent display 102 described in any one of the technical items D11 to D13,
The average light transmittance on the right side surface portion 14 in contact with the rear chamber 24 is the sixth light transmittance,
The sixth light transmittance can be set to be smaller than the first light transmittance.

<Technology D15>
In the transparent display 102 described in any one of the technical items D11 to D14,
A partition wall 31 adjacent to the rear chamber 24,
The floor surface 11 adjacent to the rear chamber 24,
The ceiling surface portion 12 adjacent to the rear chamber 24,
The rear surface portion 18 in contact with the rear chamber 24,
The left side portion 13 that is in contact with the rear chamber 24, or the right side portion 14 that is in contact with the rear chamber 24,
The vehicle 1 is equipped with a light-emitting unit 107 that can be positioned in at least one of the units and whose light color and light intensity can be adjusted.
The light color and/or intensity of the light emitted from the light-emitting unit 107 changes in accordance with the video content played on the transparent display 102 and the passage of time of the video content.

<Technology D16>
In the transparent display 102 described in any one of the technical items D11 to D15,
The vehicle 1 is equipped with a fragrance generating unit 108 that generates fragrance,
The fragrance generated by the fragrance generating unit 108 changes in accordance with the video content played on the transparent display 102 and the passage of time of the video content.

<Technology E1>
Vehicle 1 is,
The first wheel 3A connected to the car body 2,
The second wheel 3B connected to the aforementioned vehicle body 2,
The third wheel 3C connected to the vehicle body 2,
The vehicle body 2 is connected to at least a fourth wheel 3D,
The vehicle 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 aforementioned vehicle body 2 is
The floor surface portion 11 and the ceiling surface portion 12 are arranged along the predetermined orientation,
The floor portion 11 and the ceiling portion 12 are connected, and the left side portion 13 is positioned on the left side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the right side portion 14 is positioned on the right side along the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the front portion 16 is positioned on the front portion 15 in the predetermined direction,
The floor portion 11 and the ceiling portion 12 are connected, and the rear portion 18 is positioned on the rear portion 17 in the predetermined orientation,
In the floor portion 11, at least one front seat 21 is positioned on the front portion 16 side of the rear portion 18,
The floor portion 11 includes at least one rear seat 22 positioned on the rear portion 18 side of the front portion 16,
The front section 16 is equipped with glass (for example, a front windshield 4) that allows the outside of the vehicle to be viewed from the front seats 21 in the predetermined direction.
The vehicle body 2 further includes a transparent display 102 between the rear seat 22 and the front seat 21.
The transparent display 102 is configured to play predetermined video content.
The aforementioned predetermined video content comprises at least a first phase, a second phase following the first phase, and a third phase following the second phase.
The first average time interval for scene switching in the first phase is longer than the second average time interval for scene switching in the third phase.

<Technology E2>
In the vehicle 1 described in Technical E1,
The rear seat 22 is equipped with a speaker 106 that emits sound,
In at least part of the third phase, the speaker 106 outputs bird sounds.

<Technology E3>
In the vehicle 1 described in Technology 1 or Technology E2,
The first phase of the predetermined video content is to encourage the viewer to relax,
The second phase of the predetermined video content is to induce sleep in the viewer.
The third phase of the predetermined video content stimulates the viewer to become aroused.

<Technology E4>
In the vehicle 1 described in any one of the three technical items E1 to E3,
The front compartment 23 in which the front seat 21 is located,
The rear compartment 24 in which the aforementioned rear seat 22 is located,
The system further includes a partition wall 31 installed to separate the front chamber 23 and the rear chamber 24, on which the transparent display 102 is located,
The rear chamber side portion 32 of the partition wall 31 on the rear chamber 24 side,
The floor surface portion 11 adjacent to the rear chamber 24,
The ceiling surface portion 12 adjacent to the rear chamber 24,
The rear surface portion 18 in contact with the rear chamber 24,
The left side portion 13 that is in contact with the rear chamber 24, or the right side portion 14 that is in contact with the rear chamber 24,
It comprises a light-emitting section 107 located in at least one of which has adjustable light color and light intensity,
The light color and/or intensity of the light emitted from the light-emitting unit 107 changes in accordance with the predetermined video content and the passage of time of the predetermined video content.

<Technology E5>
In the vehicle 1 described in any one of the technical items E1 to E4,
It is equipped with a fragrance generating unit 108 that generates fragrance,
The fragrance generated by the fragrance generating unit 108 changes in accordance with the predetermined video content and the passage of time of the predetermined video content.

The embodiments have been described above with reference to the attached drawings, but this disclosure is not limited to such examples. It will be 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 will also fall within the technical scope of this disclosure. Furthermore, the components of the embodiments described above may be combined in any way without departing from the spirit of the invention.

The technology disclosed herein is useful in realizing vehicles that allow passengers to travel more comfortably.

1 Vehicle 2 Body 3A First wheel 3B Second wheel 3C Third wheel 3D Fourth wheel 4 Front window 5 Rear door window 6 Rear window 7 Dashboard 11 Floor 12 Ceiling 13 Left side 14 Right side 15 Front 16 Front 17 Rear 18 Rear 21 Front seat 22 Rear seat 23 Front compartment 24 Rear compartment 31 Bulkhead 32 Rear compartment side of bulkhead 100 ECU
101 IVI system 102 Transparent display 103 Self-emissive display 104 Dimming film 105 Amplifier 106 Speaker 107 Light-emitting unit 108 Fragrance generating unit 109 Operation unit 110 Vehicle network 210 Nature images 220 Sunset images 230 Sunrise images 240 Flower images 300 Boundary lines 401, 402 Dimming film 411 Light-blocking curtain 420 Waterwheel images 421 Waterwheel 450 Outer frame

Claims (7)

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,
The floor portion includes at least one rear seat located on the rear side of the front portion,
The front section is equipped with glass that allows the front passengers to view the outside of the vehicle in the predetermined direction.
The vehicle body further includes a self-illuminating transparent display and a speaker that emits sound toward the rear seat, between the rear seat and the front seat.
The aforementioned self-emissive transparent display includes a dimming sheet that can change the light transmittance,
The self-emissive transparent display and the speaker are configured to play predetermined video content and audio, respectively.
The aforementioned predetermined video content comprises at least a first phase, a second phase following the first phase, and a third phase following the second phase.
In at least a portion of the first phase,
The light transmittance of the dimming sheet of the self-emissive transparent display is set to a first light transmittance, and thereafter, the light transmittance is set to a second light transmittance which is smaller than the first light transmittance.
The speaker outputs a sound that encourages deep breathing, and the self-illuminating transparent display displays an object that operates at a predetermined interval.
vehicle. A vehicle according to claim 1,
In at least a portion of the first phase, the predetermined video content promotes relaxation in the viewer, and the light transmittance of the self-emissive transparent display gradually decreases over time from a first light transmittance to a second light transmittance.
vehicle. The vehicle according to claim 2,
The second phase of the predetermined video content is to induce sleep in the viewer.
The third phase of the predetermined video content is to stimulate the viewer to awaken.
vehicle. A vehicle according to claim 1,
The object that operates at the predetermined period is a rotating waterwheel or windmill.
vehicle. A vehicle according to claim 1,
The object that operates at the predetermined period is a wave that crashes at a predetermined time interval.
vehicle. A vehicle according to claim 1,
The front compartment in which the aforementioned front seats are located,
The rear compartment where the aforementioned rear seats are located,
The system further comprises a partition wall installed to separate the front chamber and the rear chamber, on which the self-illuminating transparent display is located,
The rear side portion of the partition wall on the rear chamber side,
The floor surface adjacent to the rear room,
The ceiling surface portion adjacent to the rear chamber,
The rear surface portion in contact with the rear chamber,
The left side portion in contact with the rear chamber, or the right side portion in contact with the rear chamber,
It comprises a light-emitting section located in at least one of which has adjustable light color and light intensity,
The light color and/or light intensity of the light-emitting unit change in accordance with the predetermined video content and the passage of time of the predetermined video content.
vehicle. A vehicle according to claim 1,
Equipped with a fragrance generating unit that produces fragrance,
The fragrance generated by the fragrance generating unit changes in accordance with the predetermined video content and the passage of time of the predetermined video content.
vehicle.