JP7799116B2 - vehicle - Google Patents

Description

This disclosure relates to vehicles.

Display devices with variable light transmittance are known in the past. For example, Patent Document 1 discloses a display device installed in the passenger compartment of a vehicle that includes a transparent display that displays an information image on a light-transmittable display surface, and a light-blocking display that displays a light-blocking 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-blocking image to be lower as the direct light becomes stronger.

Japanese Patent Application Laid-Open No. 2020-79917

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

The purpose of this disclosure is to provide technology that helps people sitting in the back seats of a vehicle recover from physical and mental fatigue.

One aspect of the present disclosure is
a first wheel coupled to the vehicle body;
a second wheel coupled to the vehicle body;
a third wheel connected to the vehicle body;
a fourth wheel connected to the vehicle body;
The vehicle is 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 that connects the floor surface portion and the ceiling surface portion and is disposed on the left side along the predetermined direction;
a right side surface portion that connects the floor surface portion and the ceiling surface portion and is disposed on the right side along the predetermined direction;
a front surface portion that connects the floor surface portion and the ceiling surface portion and is disposed in the front portion with respect to the predetermined direction;
a rear surface portion that connects the floor surface portion and the ceiling surface portion and is disposed at the rear with respect to the predetermined orientation;
At least one front seat arranged on the floor surface portion closer to the front surface portion than the rear surface portion;
At least one rear seat is disposed on the floor surface portion closer to the rear surface portion than the front surface portion,
the front portion includes glass that allows the outside of the vehicle to be viewed in the predetermined direction from the front seat,
The vehicle body further includes a rectangular self-luminous transparent display between the rear seat and the front seat,
The self-luminous transparent display includes a light-control sheet capable of changing light transmittance, and is installed such that the longitudinal direction of the rectangle is along the horizontal direction;
A vehicle in which the outside of the vehicle can be seen from the rear seat through the self-luminous transparent display and the glass,
The light transmittance of the light-adjusting sheet of the self-luminous transparent display is set to a first light transmittance, and then the light transmittance is set to a second light transmittance that is smaller than the first light transmittance, and the self-luminous transparent display outputs an image having a horizon or horizontal line along the longitudinal direction of the rectangle and a circular light-emitting portion corresponding to the sun,
A vehicle is provided in which, in the image, a part of the circular, light-emitting portion hangs over the horizon or the horizontal line.

These comprehensive or specific aspects may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a recording medium, and may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a recording medium.
It may be realized by any combination of a computer program and a recording medium.

This disclosure can help people sitting in the back seats of a vehicle recover from physical and mental fatigue.

FIG. 1 is a plan view showing an example of the configuration of a vehicle according to an embodiment of the present invention, with the interior of the vehicle seen from above; FIG. 1 is a side view showing an example of the configuration of a vehicle according to an embodiment of the present invention, with the interior of the vehicle seen through from the side. FIG. 1 shows an example of the configuration of a vehicle according to the present embodiment, as viewed from the rear seat inside the vehicle. A block diagram showing an example of the configuration of a fatigue recovery support system according to the present embodiment. Graphs showing examples of changes in transmittance of a transparent display in each phase according to the present embodiment. FIG. 10 shows a first example of video content displayed on a transparent display in a first phase according to the embodiment. FIG. 10 shows a second example of video content displayed on the transparent display in the first phase according to the embodiment. FIG. 10 shows a first example of video content displayed on the transparent display in the third phase according to the embodiment. FIG. 10 shows a second example of video content displayed on the transparent display in the third phase according to the embodiment.

Embodiments of the present disclosure will be described in detail below, with appropriate reference to the drawings. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters and redundant descriptions of substantially identical configurations may be omitted. This is to avoid unnecessary redundancy in the following description and to facilitate understanding by 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 of the claims.

(Present embodiment)
<Vehicle configuration>
Fig. 1 is a plan view showing an example of the configuration of a vehicle 1 according to this embodiment, with the interior of the vehicle seen from above. Fig. 2 is a side view showing the example of the configuration of a vehicle 1 according to this embodiment, with the interior of the vehicle seen from the side. Fig. 3 is a view showing the example of the configuration of a vehicle 1 according to this embodiment, as seen forward from a rear seat 22 inside the vehicle. Next, the configuration of the vehicle 1 will be described with reference to Figs. 1, 2, and 3.

For ease 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. For ease of explanation, the positive direction of the Z axis may be referred to as "up," the negative direction of the Z axis as "down," the positive direction of the Y axis as "front," the negative direction of the Y axis as "rear," the positive direction of the X axis as "right," and the negative direction of the X axis as "left." These directional expressions are used for ease of explanation and are not intended to limit the orientation of the structure during actual use.

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

The vehicle body 2 comprises a floor surface portion 11 and a ceiling surface portion 12 arranged in a predetermined direction.

The vehicle body 2 comprises 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 in 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 in a predetermined direction.

The vehicle body 2 comprises a front surface portion 16 that connects the floor surface portion 11 and the ceiling surface portion 12 and is positioned at the front portion 15 in a predetermined orientation, and a rear surface portion 18 that connects the floor surface portion 11 and the ceiling surface portion 12 and is positioned at the rear portion 17 in a predetermined orientation.

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

The front portion 16 is equipped with a glass windshield 4 that allows passengers in the front seats 21 to see outside the vehicle in a specified 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 along the horizontal direction (X-axis direction). The transparent display 102 includes at least a self-emissive display 103 and a light-control film 104 with variable light transmittance. The light-control film may also be read as a sheet. For ease of understanding, the following description may refer to changing the transmittance of the transparent display 102, but this may also be read as changing the transmittance of the light-control film 104. Examples of the self-emissive display 103 include an organic EL display or an LED display.

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

The transparent display 102 is set 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 includes a front compartment 23 in which front seats 21 are located, and a rear compartment 24 in which rear seats 22 are located. Vehicle 1 further includes a partition wall 31 installed to separate front compartment 23 from rear compartment 24, and on which a transparent display 102 is located.

The vehicle 1 is equipped with a light-emitting unit 107 inside the vehicle, the light color and intensity of which can be adjusted. The light-emitting unit 107 is located on at least one of the rear compartment side surface 32 of the partition 31 on the rear compartment 24 side, the floor surface 11 in contact with the rear compartment 24, the ceiling surface 12 in contact with the rear compartment 24, the rear surface 18 in contact with the rear compartment 24, the left side surface 13 in contact with the rear compartment 24, and the right side surface 14 in contact with the rear compartment 24. Note that only a portion of the light-emitting unit 107 is depicted in Figure 3. An example of the light-emitting unit 107 is an LED (Light Emitting Diode) light.

The vehicle 1 is equipped with a scent generating unit 108 that generates a scent. The scent generating unit 108 is provided, for example, in the rear compartment 24. An example of the scent generating unit 108 is an aroma diffuser. Details of the scent generated by the scent generating unit 108 will be described later.

The 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 FIG. 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, 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 operation unit 109 located near the rear seat 22 inside the vehicle. The operation unit 109 may be a tablet terminal installed inside the vehicle. Alternatively, the operation unit 109 may be a smartphone carried by the user connected to vehicle 1 via a wired or wireless connection. Details of the operations that the user can perform through the operation unit 109 will be described later.

<System configuration>
FIG. 4 is a block diagram showing an example of the configuration of a fatigue recovery assistance system according to this embodiment.

The fatigue recovery support system according to this embodiment is installed in a vehicle 1 and includes an ECU 100, an IVI system 101, a transparent display 102, a self-luminous display 103, a light-control film 104, an amplifier 105, a speaker 106, a light-emitting unit 107, a scent-emitting unit 108, and an operation unit 109. ECU is an abbreviation for Electronic Control Unit. These can send and receive information via a vehicle network 110, for example. Examples of the vehicle network 110 include a CAN (Controller Area Network), LIN, or FlexRay.

The transparent display 102, self-luminous display 103, light-control film 104, speaker 106, light-emitting unit 107, scent-emitting unit 108, and operation unit 109 have already been described above, so further description 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 audio with higher sound quality to be output from the speaker 106.

IVI is an abbreviation for "In-Vehicle Infotainment," where Infotainment is a combination of the words "Information" and "Entertainment." The IVI system 101 is a system that provides information and entertainment to passengers using electronic devices installed in the 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 number of ECUs 100 installed in the vehicle 1 is not limited to one, and multiple ECUs 100 may be installed.

The ECU 100 may also include non-volatile memory. The memory may store video content. The memory may store content related to sound to be output from the speaker 106 in conjunction with the video content (hereinafter referred to as audio content). The memory may store content for changing the light transmittance of the light-control film 104 in conjunction with the video content (hereinafter referred to as light-control content). The memory may store content for causing the light-emitting unit 107 to emit light in conjunction with the video content (hereinafter referred to as light-emitting content). The memory may store content for causing the scent-generating unit 108 to emit a scent in conjunction with the video content (hereinafter referred to as scent content). These contents may be stored in the memory in advance. Furthermore, these contents may be updated as appropriate.

The ECU 100 performs a process of playing video content and displaying it on the transparent display 102. In conjunction with the playback of the video content, the ECU 100 transmits audio content to the amplifier 105 and outputs the audio content from the speaker 106. In conjunction with the playback of the video content, the ECU 100 performs a process of changing the transmittance of the transparent display 102 based on the dimming content. In conjunction with the playback of the video content, the ECU 100 performs a process of changing the light color and/or light intensity of the light-emitting unit 107 based on the light-emitting content. In conjunction with the playback of the video content, the ECU 100 performs a process of changing whether to emit an aroma from the aroma generating unit 108, the type of aroma to be emitted, and/or the intensity of the aroma to be emitted based on the scent 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, the light-adjusting film 104, the amplifier 105, the light-emitting unit 107, and the scent-emitting 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 transmittance by controlling the light-adjusting film 104 based on the operation information. For example, the ECU 100 controls the light-emitting unit 107 based on the operation information to set whether or not to allow the light-emitting unit 107 to emit light and adjust the light intensity, etc. For example, the ECU 100 controls the scent generating unit 108 based on the operation information to set whether or not to permit the scent generating unit 108 to emit a scent, and to set the scent strength (for example, the strength of the airflow for emitting the scent). Note that the ECU 100 may also be interpreted as other terms such as a processor, controller, control unit, or control circuit.

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

Next, with reference to Figures 5, 6, 7, 8, and 9, we will explain in detail the processing performed to assist the user sitting in the rear seat 22 in recovering from fatigue.

Video content is an image that changes over time and has at least a first phase, a second phase that follows the first phase, a third phase that follows the second phase, and a fourth phase that follows the third phase. In other words, when video content is played, the transparent display 102 displays the images in the order of the first phase, the second phase, the third phase, and the fourth phase. Note that a light-blocking curtain (not shown) may be provided on the rear door window 5, and the light-blocking curtain may be closed when playing video content. Alternatively, the rear door window 5 may be provided with a light-control film that can change its light transmittance, and the ECU 100 may automatically reduce the transmittance of the light-control film when playing video content. This allows the rear compartment 24 to be darkened. Each phase will now be described in detail.

<Phase 1>
In the first phase, an image encouraging a user (viewer) sitting in the rear seat 22 to relax is displayed on the transparent display 102. The transmittance of the transparent display 102 at the end of the first phase (second transmittance) may 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 FIG. 5 , the transmittance of the transparent display 102 may change to decrease over time. This allows the user's gaze, which has been directed toward the scenery outside the vehicle through the windshield 4, to be gradually guided toward the image content displayed on the transparent display 102, thereby smoothly directing the user's attention toward the image content.

The image that encourages relaxation may be a natural image including a forest and a river (hereinafter referred to as nature image 210), as exemplified in FIG. 6, in the first half of the first phase. Displaying such nature image 210 can ease the user's sense of tension and encourage the user to relax. The image that encourages relaxation may be an image of the setting sun sinking below the horizon (hereinafter referred to as sunset image 220), as exemplified in FIG. 7, in the second half of the first phase. Displaying such sunset image 220 can make the user aware of the end of an active day and encourage the user to relax.

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

As a result, the view outside the vehicle seen through the windshield 4 above the boundary line 300 overlaps with the sky above the horizon in the sunset image 220, and the dashboard 7 below the boundary line 300 overlaps with the ground or sea below the horizon in the sunset image 220. Typically, the ground or sea below the horizon in the sunset image 220 is darker than the sky above the horizon in the sunset image 220, so the dashboard 7 is not very visible through the transparent display 102. This reduces the sense of discomfort felt by the user by the overlap between the video content displayed on the transparent display 102 and the view seen through the transparent display 102. In addition, the user's attention, which had been directed toward the view outside the vehicle seen through the windshield 4, can be smoothly guided to the video content displayed on the transparent display 102.

In the first phase, when a nature image 210 is displayed, sound corresponding to the nature image 210 is output from the speaker 106, the light-emitting unit 107 emits light in a light color and/or light intensity corresponding to the nature image 210, and a scent corresponding to the nature image 210 is emitted from the scent-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 the speaker 106, the light-emitting unit 107 emits light in a light color and/or light intensity corresponding to the sunset image 220, and a scent corresponding to the sunset image 220 is emitted from the scent-generating unit 108. This encourages the user to relax not only through their vision, but also through their hearing and smell.

<Phase 2>
In the second phase, a sleep-promoting (i.e., sleep-inducing) image for encouraging a user (viewer) sitting in the rear seat 22 to sleep is displayed on the transparent display 102. The sleep-promoting image may be, for example, an image with relatively low brightness. Alternatively, in the second phase, no video content may be displayed on the transparent display 102.

The average value of the transmittance of the transparent display 102 during the first phase (first average transmittance) may be greater than the average value of the transmittance of the transparent display 102 during the second phase (second average transmittance). In other words, the average value of the transmittance of the transparent display 102 during the second phase (second average transmittance) may be smaller than the average value of the 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 it relatively dark inside the rear chamber 24 during the second phase, thereby enabling the user who was relaxed during the first phase to fall asleep.

In the second phase, sound corresponding to the sleep-promoting video is output from the speaker 106, the light-emitting unit 107 emits light in a color and/or intensity corresponding to the sleep-promoting video, and the scent-generating unit 108 emits a scent corresponding to the sleep-promoting video. Alternatively, in the second phase, no sound may be output from the speaker 106 and the light-emitting unit 107 may not emit light. This allows the user to be encouraged to sleep not only through their vision, but also through their hearing and smell.

<Phase 3>
In the third phase, an image that encourages the user (viewer) sitting in the rear seat 22 to wake up 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 in the settable range of transmittance.

The image to encourage awakening may be an image of the morning sun rising above the horizon or horizontal line (hereinafter referred to as morning sun image 230), as exemplified in FIG. 8, in the first half of the third phase. Displaying such a morning sun image 230 can make the user aware of the start of an active daytime period and encourage the user to wake up. The image to encourage awakening may be an image including a single flower (hereinafter referred to as flower image 240), as exemplified in FIG. 9, in the second half of the third phase. Displaying such a flower image 240 can attract the user's attention and encourage the user to wake up.

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

As a result, the view outside the vehicle seen through the front window 4 above the boundary line 300 overlaps with the sky above the horizon or horizon in the sunrise image 230, and the dashboard 7 below the boundary line 300 overlaps with the ground or sea below the horizon or horizon in the sunrise image 230. Typically, the ground or sea below the horizon or horizon in the sunrise image 230 is darker than the sky above the horizon or horizon in the sunrise image 230, so the dashboard 7 is not very visible through the transparent display 102. Therefore, the sense of discomfort felt by the user by the overlap between the video content displayed on the transparent display 102 and the scenery seen through the transparent display 102 can be reduced.

In the third phase, when a sunrise image 230 is displayed, sound corresponding to the sunrise image 230 is output from the speaker 106, the light-emitting unit 107 emits light in a light color and/or light intensity corresponding to the sunrise image 230, and a fragrance corresponding to the sunrise image 230 is emitted from the scent-generating unit 108. Also, in the third phase, when a flower image 240 is displayed, sound corresponding to the flower image 240 is output from the speaker 106, the light-emitting unit 107 emits light in a light color and/or light intensity corresponding to the flower image 240, and a fragrance corresponding to the flower image 240 is emitted from the scent-generating unit 108. This awakens the user not only through their vision, but also through their hearing and smell.

<Fourth Phase>
In the fourth phase, an image that does not encourage at least relaxation, sleep, or wakefulness for the user (viewer) sitting in the rear seat 22 is displayed on the transparent display 102. The image displayed in the fourth phase may be, for example, an image with relatively high brightness. Alternatively, in the fourth phase, no video content may be displayed on the transparent display 102.

After a certain time has elapsed since the start of the fourth phase, the transmittance of the transparent display 102 may be a fourth transmittance that is greater than the third transmittance. In other words, the fourth transmittance may be a relatively high transmittance. For example, in the fourth phase, as shown in FIG. 5, the transmittance of the transparent display 102 may change so as to increase over time. This allows the user's gaze, which was directed at the video content displayed on the transparent display 102, to gradually be guided to the view outside the vehicle through the front window 4, allowing the user's attention to be smoothly directed to the view outside the vehicle.

The average value of the transmittance of the transparent display 102 during the fourth phase (third average transmittance) may be greater than the average value of the transmittance of the transparent display 102 during the third phase (fourth average transmittance). For example, the transmittance of the transparent display 102 during the fourth phase may increase over time, as shown in FIG. 5, and eventually reach the maximum value within the settable range of transmittance. As a result, the transmittance of the transparent display 102 increases, so that the user's gaze, which was directed at the video content during the third phase, can be gradually guided through the windshield 4 to the scenery outside the vehicle, allowing the user's attention to be smoothly directed to the real scenery outside the vehicle.

In the fourth phase, no sound is output from the speaker 106, the light-emitting unit 107 does not emit light, and no fragrance is emitted from the fragrance generating unit 108.

<Transmittance>
If the rear compartment 24 is made completely dark and the outside of the vehicle cannot be seen at all, the user may be more susceptible to car 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 light from outside the vehicle. The minimum transmittance of the transparent display 102 may be arbitrarily changeable. For example, the minimum transmittance of the transparent display 102 when a user who is prone to car sickness sits 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 car sickness sits in the rear seat 22.

(Summary of the Disclosure)
The above description of the embodiments discloses the following techniques.

<Technology A1>
Vehicle 1 is
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,
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 vehicle body 2 is
a floor surface portion 11 and a ceiling surface portion 12 arranged along the predetermined direction;
a left side surface portion 13 that connects the floor surface portion 11 and the ceiling surface portion 12 and is disposed on the left side along the predetermined direction;
a right side surface portion 14 that connects the floor surface portion 11 and the ceiling surface portion 12 and is disposed on the right side along the predetermined direction;
a front surface portion 16 that connects the floor surface portion 11 and the ceiling surface portion 12 and is disposed in the front portion 15 in the predetermined direction;
a rear surface portion 18 that connects the floor surface portion 11 and the ceiling surface portion 12 and is disposed at the rear portion 17 in the predetermined direction;
At least one front seat 21 arranged on the floor surface portion 11 closer to the front surface portion 16 than the rear surface portion 18;
At least one rear seat 22 is disposed on the floor surface 11 closer to the rear surface 18 than the front surface 16,
The front portion 16 includes glass (for example, a windshield 4) through which the outside of the vehicle can be seen in the predetermined direction from the front seat 21,
The vehicle body 2 further includes a transparent display 102 having variable transmittance between the rear seat 22 and the front seat 21,
The outside of the vehicle can be seen from the rear seat 22 through the transparent display 102 and the glass (for example, the front window 4),
the transparent display 102 is configured to play predetermined video content;
the predetermined video content has at least a first phase, a second phase that follows the first phase, a third phase that follows the second phase, and a fourth phase that follows 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 less than the first transmittance.

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

<Technology A4>
In the vehicle 1 according to any one of the technical A1 to technical A3,
the first phase of the predetermined video content encourages a viewer to relax;
the second phase of the predetermined video content encourages a viewer to sleep;
the third phase of the predetermined video content prompts a viewer to wake up;
The fourth phase of the predetermined video content does not encourage the viewer to at least relax, sleep, or wake up.

<Technology A5>
In the vehicle 1 according to any one of Technical A1 to Technical A4,
a first average transmittance of the variable transmittance of the transparent display 102 during the first phase of the predetermined video content,
The variable transmittance of the transparent display 102 is greater than a second average transmittance averaged during the second phase of the predetermined video content.

<Technology A6>
In the vehicle 1 according to any one of Technical A1 to Technical A4,
a third average transmittance of the variable transmittance of the transparent display 102 during the fourth phase of the predetermined video content,
The variable transmittance of the transparent display 102 is greater than a fourth average transmittance that is averaged during the third phase of the predetermined video content.

<Technology A7>
In the vehicle 1 according to any one of the technical A1 to technical A6,
The transparent display 102 includes at least a self-luminous display 103 and a sheet with variable light transmittance (for example, a light control film 104).

<Technology A8>
In the vehicle 1 according to any one of the technical A1 to technical A7,
a front room 23 in which the front seats 21 are arranged;
a rear compartment 24 in which the rear seats 22 are arranged;
a partition wall (31) that is installed to separate the front chamber (23) and the rear chamber (24) and on which the transparent display (102) is disposed,
a rear chamber side surface portion 32 of the partition wall 31 on the rear chamber side;
the floor surface portion 11 in contact with the rear chamber 34;
the ceiling surface portion 12 in contact with the rear chamber 34;
the rear surface portion 18 in contact with the rear chamber 34;
the left side surface portion 13 in contact with the rear chamber 34; or the right side surface portion 14 in contact with the rear chamber 34;
a light-emitting unit 197 that is arranged in at least one of the above and that is capable of adjusting the light color and light intensity;
The light color and/or the light intensity of 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 according to any one of the technical A1 to technical A8,
an aroma generating unit 108 that generates aroma;
The scent emitted by the scent generating unit 108 changes in accordance with the predetermined video content and the passage of time of the predetermined video content.

<Technology B1>
The vehicle 1 includes a first wheel 3A connected to a 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,
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 vehicle body 2 is
a floor surface portion 11 and a ceiling surface portion 12 arranged along the predetermined direction;
a left side surface portion 13 that connects the floor surface portion 11 and the ceiling surface portion 12 and is disposed on the left side along the predetermined direction;
a right side surface portion 14 that connects the floor surface portion 11 and the ceiling surface portion 12 and is disposed on the right side along the predetermined direction;
a front surface portion 16 that connects the floor surface portion 11 and the ceiling surface portion 12 and is disposed in the front portion 15 in the predetermined direction;
a rear surface portion 18 that connects the floor surface portion 11 and the ceiling surface portion 12 and is disposed at the rear portion 17 in the predetermined direction;
At least one front seat 21 arranged on the floor surface portion 11 closer to the front surface portion 16 than the rear surface portion 18;
At least one rear seat 22 is disposed on the floor surface 11 closer to the rear surface 18 than the front surface 16,
The front portion 16 includes glass (for example, a windshield 4) through which the outside of the vehicle can be seen in the predetermined direction from the front seat 21,
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,
The outside of the vehicle can be seen from the rear seat 22 through the transparent display 102 and the glass (for example, the front window 4),
the transparent display 102 is configured to play predetermined video content;
the predetermined video content has at least a first phase, a second phase that follows the first phase, and a third phase that follows the second phase;
At least a portion of the first phase includes an image having a horizon or horizon line along the length of the rectangle.

<Technology B2>
In the vehicle 1 described in Technology B1,
The image having the horizon or horizontal line displays a circular, light-emitting portion that is partially in contact with the horizon or horizontal line.

<Technology B3>
In the vehicle 1 described in Technology B2,
The circular, luminous part in the image with the horizon or horizon line represents the sun.

<Technology B4>
In the vehicle 1 according to any one of the technical fields B1 to B3,
the first phase of the predetermined video content encourages a viewer to relax;
the second phase of the predetermined video content encourages a viewer to sleep;
The third phase of the predetermined video content encourages the viewer to wake up.

<Technology B5>
In the vehicle 1 according to any one of Technology 1 to Technology B4,
In at least a part of the third phase, an image having a horizon or a horizon line along the longitudinal direction of the rectangle is included,
The image having the horizon or horizontal line displays a circular, light-emitting portion that is partially in contact with the horizon or horizontal line.

<Technology B6>
In the vehicle 1 described in Technology B5,
The circular, luminous portion of the image with the horizon or horizon line represents the sun.

<Technology B7>
In the vehicle 1 according to any one of Technical B1 to Technical B6,
The transparent display 102 includes at least a self-luminous display 103 and a sheet with variable light transmittance (for example, a light-control film).

<Technology B8>
In the vehicle 1 according to any one of Technical B1 to Technical B7,
a front room 23 in which the front seats 21 are arranged;
a rear compartment 24 in which the rear seats 22 are arranged;
a partition wall (31) that is installed to separate the front chamber (23) and the rear chamber (24) and on which the transparent display (102) is disposed,
a rear chamber side surface portion 32 of the partition wall 31 on the rear chamber 24 side;
the floor surface portion 11 in contact with the rear room 24;
the ceiling surface portion 12 in contact with the rear room 24;
the rear surface portion 18 in contact with the rear chamber 24;
the left side surface portion 13 in contact with the rear chamber 24, or the right side surface portion 14 in contact with the rear chamber 24;
a light-emitting unit 107 that is arranged in at least one of the above and that is capable of adjusting the light color and light intensity;
The light color and/or the light intensity of 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 according to any one of Technical B1 to Technical B8,
an aroma generating unit 108 that generates aroma;
The scent emitted by the scent generating unit 108 changes in accordance with the predetermined video content and the passage of time of the predetermined video content.

Although the embodiments have been described above with reference to the accompanying drawings, the present 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 may be conceived within the scope of the claims, and it is understood that these also fall within the technical scope of the present disclosure. Furthermore, the components of the above-described embodiments may be combined in any manner as long as they do not deviate from the spirit of the invention.

The technology disclosed herein is useful for creating vehicles that allow passengers to enjoy a more comfortable ride.

REFERENCE SIGNS LIST 1 Vehicle 2 Vehicle body 3A First wheel 3B Second wheel 3C Third wheel 3D Fourth wheel 4 Front window 5 Rear door window 7 Dashboard 11 Floor surface portion 12 Ceiling surface portion 13 Left side surface portion 14 Right side surface portion 15 Front portion 16 Front portion 17 Rear portion 18 Rear portion 21 Front seat 22 Rear seat 23 Front compartment 24 Rear compartment 31 Bulkhead 32 Bulkhead rear compartment side portion 100 ECU
101 IVI system 102 Transparent display 103 Self-luminous display 104 Light-controlling film 105 Amplifier 106 Speaker 107 Light-emitting unit 108 Scent-emitting unit 109 Operation unit 110 Vehicle network 210 Nature image 220 Sunset image 230 Sunrise image 240 Flower image 300 Boundary line

Claims (7)

a first wheel coupled to the vehicle body;
a second wheel coupled to the vehicle body;
a third wheel connected to the vehicle body;
a fourth wheel connected to the vehicle body;
The vehicle is 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 that connects the floor surface portion and the ceiling surface portion and is disposed on the left side along the predetermined direction;
a right side surface portion that connects the floor surface portion and the ceiling surface portion and is disposed on the right side along the predetermined direction;
a front surface portion that connects the floor surface portion and the ceiling surface portion and is disposed in the front portion with respect to the predetermined direction;
a rear surface portion that connects the floor surface portion and the ceiling surface portion and is disposed at the rear with respect to the predetermined orientation;
At least one front seat arranged on the floor surface portion closer to the front surface portion than the rear surface portion;
At least one rear seat is disposed on the floor surface portion closer to the rear surface portion than the front surface portion,
the front portion includes glass that allows the outside of the vehicle to be viewed in the predetermined direction from the front seat,
The vehicle body further includes a rectangular self-luminous transparent display between the rear seat and the front seat,
The self-luminous transparent display includes a light-control sheet capable of changing light transmittance, and is installed such that the longitudinal direction of the rectangle is along the horizontal direction;
A vehicle in which the outside of the vehicle can be seen from the rear seat through the self-luminous transparent display and the glass,
The light transmittance of the light-adjusting sheet of the self-luminous transparent display is set to a first light transmittance, and then the light transmittance is set to a second light transmittance that is smaller than the first light transmittance, and the self-luminous transparent display outputs an image having a horizon or horizontal line along the longitudinal direction of the rectangle and a circular light-emitting portion corresponding to the sun,
In the image, a part of the circular light-emitting portion overlaps the horizon or the horizontal line.
vehicle. 2. The vehicle according to claim 1,
The image having a horizon or horizontal line along the longitudinal direction of the rectangle and a circular light-emitting portion corresponding to the sun is included in predetermined image content,
the predetermined video content has at least a second phase that follows a first phase and a third phase that follows the second phase;
The image having a horizon or horizontal line along the longitudinal direction of the rectangle and a circular light-emitting portion corresponding to the sun is included in the first phase.
vehicle. 3. The vehicle according to claim 2,
the first phase of the predetermined video content encourages a viewer to relax;
the second phase of the predetermined video content encourages a viewer to sleep;
the third phase of the predetermined video content prompts a viewer to wake up;
vehicle. The vehicle according to claim 2 or 3,
In at least a part of the third phase, an image having a horizon or a horizon line along the longitudinal direction of the rectangle is included,
During at least a part of the third phase, the image having the horizon or horizontal line displays a circular, light-emitting portion that is partially tangent to the horizon or horizontal line.
vehicle. 5. The vehicle according to claim 4,
During at least a portion of the third phase, the circular, luminous portion of the image having the horizon represents the sun.
vehicle. 2. The vehicle according to claim 1,
a front room in which the front seats are arranged;
a rear compartment in which the rear seats are arranged;
a partition wall disposed between the front chamber and the rear chamber, the partition wall having the self-luminous transparent display disposed thereon;
a rear chamber side surface portion of the partition wall on the rear chamber side;
the floor surface portion in contact with the rear compartment;
the ceiling surface portion in contact with the rear room;
the rear surface portion in contact with the rear chamber;
the left side surface portion in contact with the rear compartment, or the right side surface portion in contact with the rear compartment;
a light-emitting unit that is arranged in at least one of the above and that is capable of adjusting the light color and light intensity;
the light color and/or the light intensity of the light-emitting unit changes in accordance with the predetermined video content and the passage of time of the predetermined video content;
vehicle. 2. The vehicle according to claim 1,
A fragrance generating unit is provided to generate fragrance,
the scent emitted by the scent generating unit changes in accordance with the predetermined video content and the passage of time of the predetermined video content;
vehicle.