Space control system and mobile body

Abstract

During an awakening phase for guiding a user toward awakening, this space control system 100 causes a transparent display 16 (video projection device) to project video content to be used in the awakening phase, and the average brightness Br of the video content during the awakening phase is configured to be higher than the brightness Br of the video content at the start time of the awakening phase.

Description

Space control system and mobile object

[0001] The present disclosure relates to a space control system that adjusts conditions in a space and a mobile body that includes the space control system.

[0002] Patent document 1 discloses a technology in which a partial lighting device starts increasing the illuminance of the head area a predetermined time before the wake-up time specified by the user, and increases the illuminance of the head area according to the elapsed time from when the illuminance increase began.

[0003] Japanese Patent Application Laid-Open No. 2022-10712

[0004] In spaces with size restrictions, such as the interior of a vehicle, the space available for placing a lighting device to wake up the user is limited, so the lighting device may not be able to provide illumination light with a brightness sufficient to wake up the user, and there is a risk that the user may not be properly woken up.

[0005] The present disclosure provides a spatial control system that can induce a user to wake up even in a space where the placement of a lighting device is limited, and a mobile body equipped with the spatial control system.

[0006] A spatial control system in one aspect of the present disclosure includes a video projection device arranged inside a space and a control device, and during an awakening phase in which a user is guided to awaken, the control device causes the video projection device to project video content to be used in the awakening phase, and the average brightness of the video content during the awakening phase is higher than the brightness of the video content at the start of the awakening phase.

[0007] According to the present disclosure, even when the placement of lighting devices within a space is limited, by using a video projection device, it is possible to increase the illuminance within the space and induce a user to wake up.

[0008] 1 is a diagram showing an example of a top view of a vehicle equipped with a display unit. FIG. 2 is a diagram showing an example of a side view of a vehicle. FIG. 3 is a diagram showing the vehicle interior space as seen from the rear of the vehicle. FIG. 4 is a block diagram explaining the control functions of a control device that controls a space control system that adjusts the state of the vehicle interior space. FIG. 5 is a diagram showing temporal changes in the brightness of video content displayed on a transparent display. FIG. 6 is a diagram showing an image displayed on a transparent display during a sleep onset phase, illustrating the state of the transparent display at the end of the sleep onset phase. FIG. 7 is a diagram showing the state of the transparent display at a relatively early point after switching to the wakefulness phase. FIG. 8 is a diagram showing changes in brightness of video content during a wakefulness phase. FIG. 9 is a diagram showing the relationship between the average brightness of the entire display area and the brightness in a specified area during the wakefulness phase. FIG. 10 is a diagram showing changes in brightness in a specified area within the display area. FIG. 11 is a diagram showing an example of video content displayed during the wakefulness phase. FIG. 12 is a flowchart explaining the flow of control by a control device. FIG. 13 shows differences in wakefulness when video content is displayed on a plurality of subjects under different conditions.

[0009] (Findings that Form the Basis of the Present Disclosure) Research is underway into technology that uses a plurality of devices, such as a video projection device, an audio device, and a lighting device, to control the state within a space and guide a user to an appropriate state.

[0010] However, in a space where the placement space of each device is limited, such as a vehicle interior, the placement of lighting devices is also limited, and as a result, the lighting device may not be able to achieve an illuminance that can induce a user in the room to wake up, and the user may not be properly woken up.

[0011] Therefore, the inventors discovered that the above problem can be solved by using a video projection device even when there are restrictions on the placement of the lighting device, and came up with the following aspects of the present disclosure.

[0012] (1) A spatial control system according to one aspect of the present disclosure includes a video projection device disposed within a space and a control device, wherein the control device causes the video projection device to project video content to be used in an awakening phase during which the user is guided to awaken, and the average brightness of the video content during the awakening phase is higher than the brightness of the video content at the start of the awakening phase.

[0013] According to the above aspect, the video content used in the awakening phase to guide the user to awakening is projected by the video projection device, and furthermore, since the average brightness of the video content during the awakening phase is higher than the brightness of the video content at the start of the awakening phase, even if there are restrictions on the placement of lighting devices in the space or it is difficult to place lighting devices, the user can be guided to awakening by increasing the illuminance in the space using the video projection device.

[0014] (2) In the spatial control system described in (1) above, the space may be an interior space of a vehicle, and the video projection device may be disposed between the rear seat and the front seat of the vehicle.

[0015] According to the above aspect (2), even in cases where there are many restrictions on the placement of lighting devices, such as in the interior space of a vehicle, it is possible to increase the illuminance in the space by using a video projection device placed between the rear seat and the front seat, thereby guiding the user to wake up.

[0016] (3) In the spatial control system described in (1) or (2) above, the average brightness in the display area of ​​the video content during the wakefulness phase may increase according to the elapsed time.

[0017] According to the above aspect (3), the average brightness in the display area of ​​the video content during the awakening phase increases with the elapsed time, thereby guiding the user to awaken without causing discomfort to the user.

[0018] (4) In the spatial control system described in any of (1) to (3) above, a lighting device that illuminates the space may be further provided, and the control device may cause the lighting device to turn on illumination light during the wake-up phase, and the average brightness of the illumination light during the wake-up phase may be higher than the brightness of the illumination light at the start of the wake-up phase.

[0019] According to the above aspect (4), the illumination light from the lighting device can be further utilized, and the average brightness of the illumination light during the wake-up phase can be made higher than the brightness at the start of the wake-up phase, thereby guiding the user to wake up.

[0020] (5) In the spatial control system described in (4) above, the control device may control the lighting device so that the brightness of the illumination light changes in accordance with the brightness of the video content during the wake-up phase.

[0021] According to the above aspect (5), the brightness of the illumination light is appropriately adjusted according to the brightness of the video content, thereby guiding the user to wake up without causing discomfort to the user during the wake-up phase.

[0022] (6) In the spatial control system described in any of (1) to (5) above, a sleep onset phase may be further included before the wake-up phase to induce the user to fall asleep, and in the sleep onset phase, the average brightness of the video content during the sleep onset phase may be higher than the brightness of the video content at the end of the sleep onset phase.

[0023] According to the above aspect (6), the brightness of the video content is lower at the end of the sleep onset phase than before the end, so that the user can be guided to fall asleep during the sleep onset phase.

[0024] (7) In the spatial control system described in (6) above, the brightness of the video content during the sleep phase may decrease according to the elapsed time.

[0025] According to the above aspect (7), the brightness of the video content during the sleep phase decreases as time passes, so that the space gradually becomes darker over time, and the user can be naturally guided to fall asleep.

[0026] (8) In the spatial control system described in any of (1) to (7) above, the system may further include an acoustic device that generates sound within the space, and the control device may increase the volume of the acoustic device depending on the elapsed time of the awakening phase.

[0027] According to the above aspect (8), the volume of the sound generator increases as the awakening phase progresses, so that the sound gradually gets louder during the awakening phase, and the sound can also be used to appropriately guide the user into awakening.

[0028] (9) In the spatial control system described in any of (1) to (8) above, the system may further include a vibration generating device that applies vibrations to the user, and the control device may increase the vibration magnitude of the vibration generating device depending on the elapsed time of the awakening phase.

[0029] According to the above aspect (9), the vibration magnitude of the vibration generating device increases according to the elapsed time of the awakening phase, so that the vibration magnitude gradually increases during the awakening phase, and the user can be appropriately guided to awaken by the vibration.

[0030] (10) In the spatial control system described in (3) above, the brightness of the video content during the awakening phase may change periodically according to the elapsed time in at least one area included in the display area.

[0031] According to the above aspect (10), the brightness of the video content during the awakening phase changes periodically according to the elapsed time in at least one area included in the display area, so that by increasing the average brightness of the display area while varying the brightness locally to create variation, the user's level of awakening can be further increased.

[0032] (11) In the spatial control system described in (3) or (10) above, during a period in which the average value of brightness in the display area of ​​the video content is increasing with elapsed time, the video content may not include a moving object as a subject, and during a period after the average value of brightness in the display area of ​​the video content has increased with elapsed time, the video content may include a moving object as a subject.

[0033] According to the above aspect (11), the user's cognitive function gradually improves as the average brightness increases, and after the user's cognitive function has improved, the video content can include a moving object as a subject to attract the user's attention and further increase the user's level of alertness.

[0034] (12) In the spatial control system described in (3), (10) or (11) above, during a period in which the average value of brightness in the display area of ​​the video content increases with elapsed time, the video content may be a grayscale image, and during a period after the average value of brightness in the display area of ​​the video content increases with elapsed time, the video content may be an image including a colored subject.

[0035] According to the above aspect (12), by increasing the brightness of the grayscale image, the user's cognitive function is gradually improved, and after the user's cognitive function has improved, the user's level of awareness can be further increased by displaying video content including colored subjects.

[0036] (13) In one aspect of the present disclosure, a moving body includes a video projection device arranged within a space and a control device, and during a wake-up phase in which a user is guided to wake up, the control device causes the video projection device to project video content to be used in the wake-up phase, and the average brightness of the video content during the wake-up phase is higher than the brightness of the video content at the start of the wake-up phase.

[0037] According to the above aspect (10), in a moving object, the video content used in the awakening phase to induce awakening of the user is projected by a video projection device, and further, since the average brightness of the video content during the awakening phase is higher than the brightness of the video content at the start of the awakening phase, even if there are restrictions on the placement of lighting devices in the space or it is difficult to place lighting devices, the user can be induced to awaken by increasing the illuminance in the space using the video projection device.

[0038] The embodiments described below each illustrate a specific example of the present disclosure. The numerical values, shapes, components, steps, and order of steps shown in the following embodiments are merely examples and do not limit the present disclosure. Among the components in the following embodiments, components that are not described in the independent claims that represent the highest concepts are described as optional components.

[0039] [Embodiment] Fig. 1 is a diagram illustrating an example of a top view of a vehicle 10 according to an embodiment of the present disclosure. Fig. 2 is a side view of the vehicle 10 as viewed from one of the left and right directions (X direction). In the following description, as shown in the lower right of Fig. 1 and the lower right of Fig. 2, the traveling direction of the vehicle 10 is referred to as the front-rear direction or Y direction, the direction perpendicular to the ground on which the vehicle 10 travels is referred to as the up-down direction or Z direction, and the direction perpendicular to the front-rear direction (Y direction) and the up-down direction (Z direction) is referred to as the left-right direction (vehicle width direction) or X direction. Note that the vehicle 10 corresponds to an example of a moving body.

[0040] The vehicle 10 is, for example, a passenger car, a taxi, etc. Inside the vehicle 10, a cabin space 8 is provided with various devices, including a front seat 12, a rear seat 14, a transparent display 16 disposed between the front seat 12 and the rear seat 14, an acoustic device 18, a lighting device 20, a vibration generator 22, and a fragrance generator 24.

[0041] The front seats 12 include the driver's seat of the vehicle 10. The rear seats 14 do not include the driver's seat of the vehicle 10. For example, if the vehicle 10 is a so-called three-row vehicle with a driver's seat and a passenger seat in the first row, the seats included in the second and third rows of seats may be rear seats, and the driver's seat and passenger seat included in the first row of seats may be front seats. Alternatively, the seats included in the third row of seats may be rear seats, and the driver's seat and passenger seat included in the first row of seats and the seats included in the second row of seats may be front seats.

[0042] The transparent display 16 is disposed between the rear seat 14 and the front seat 12 of the vehicle 10. The transparent display 16 is a plate-shaped transparent member and has a transparent, rectangular display surface 26 that displays video content toward the rear seat 14, i.e., in the -Y direction. The transparent display 16 displays video content on the display surface 26 under the control of a control device 50, which will be described later. The transparent display 16 is formed, for example, of a transparent organic EL. The transparent display 16 has a constant light transmittance of 80% or more, 90% or more, or 100%. The transparent display 16 corresponds to an example of a video projection device.

[0043] A transparent light-controlling film (light-controlling sheet) may be provided on the back surface of the transparent display 16, which is located on the opposite side from the display surface 26, and which adjusts the light blocking rate (transmittance) of the back surface under the control of the control device 50. A projector may be provided at the upper rear of the rear seat 14 of the vehicle 10, and the transparent display 16 may be made of translucent glass. As a result, under the control of the control device 50, the projector projects video content onto the display surface 26 of the glass, thereby displaying the video content on the display surface 26. Even in this case, the transparent display 16 is disposed between the rear seat 14 and the front seat 12 of the vehicle 10.

[0044] The acoustic device 18 generates sound in the vehicle interior space 8 under the control of the control device 50. The acoustic device 18 is configured by, for example, a speaker. In this embodiment, the acoustic device 18 is disposed near the transparent display 16 on both sides of the vehicle 10 in the left-right direction (X direction).

[0045] The vibration generator 22 mechanically applies vibrations to passengers in the rear seats 14 under the control of the control device 50. The vibration generator 22 is built into the seat of the rear seats 14, and generates vibrations under the control of the control device 50. The vibration generator 22 is configured to be adjustable in vibration strength (amount of vibration) and frequency.

[0046] The scent emitting device 24 emits or diffuses a predetermined fragrance under the control of the control device 50, thereby emitting a fragrance within the vehicle interior space 8. The scent emitting device 24 is disposed, for example, in the center of the left-right direction of the vehicle 10, and emits a fragrance under the control of the control device 50. The scent emitting device 24 is composed of, for example, a diffuser that emits or diffuses a fragrance.

[0047] The lighting device 20 is disposed in the vehicle interior space 8 at a position where it can illuminate the vehicle interior space 8, and includes a light-emitting element such as an LED. The lighting device 20 includes, for example, a plurality of RGBW-type LED (Light Emitting Diode) elements that emit blue, green, red, and white light, and has a tape-like configuration in which the plurality of LED elements are arranged in a row. Note that the lighting device 20 is not limited to RGBW-type LED elements, and may be configured with, for example, RGB-type LED elements that emit blue, green, and red light, or LED elements that emit blue and white light. The lighting device 20 is not limited to LED elements, and may be configured with one or more elements that can emit colored light.

[0048] Fig. 3 is a view of the passenger compartment 8 as seen from the rear of the vehicle. As shown in Fig. 3, a rectangular transparent display 16 is disposed in front of the rear seat 14. The lighting devices 20 include a lower lighting device 20A, a first upper lighting device 20B, a second upper lighting device 20C, a first ceiling lighting device 20D, and a pair of second ceiling lighting devices 20E. All of these lighting devices 20 are formed in an elongated shape.

[0049] The lower lighting device 20A, the first upper lighting device 20B, and the second upper lighting device 20C are arranged on a plane parallel to the display surface 26 of the transparent display 16. When these lighting devices (20A to 20C) are arranged on a plane parallel to the display surface 26 of the transparent display 16, when the occupant looks at the display surface 26 of the transparent display 16, the lighting devices (20A to 20C) arranged on the parallel plane together with the transparent display 16 are also included in the occupant's field of vision. Therefore, the illumination light from these lighting devices (20A to 20C) can effectively provide visual stimulation to the occupant, enhancing the effect of inducing awakening.

[0050] The lower illumination device 20A is provided below the transparent display 16. The lower illumination device 20A is provided so that its longitudinal direction is aligned with the longitudinal direction of the transparent display 16 (left-right direction, X direction).

[0051] The first upper illumination device 20B is provided directly above the display surface 26 and extends along the longitudinal direction (left-right direction, X direction) of the transparent display 16 to both longitudinal ends of the transparent display 16. The second upper illumination device 20C is provided above the first upper illumination device 20B. The second upper illumination device 20C is formed so that its longitudinal dimension is shorter than that of the first upper illumination device 20B, and is disposed at a position where its longitudinal center overlaps (or nearly overlaps) with the longitudinal center of the transparent display 16.

[0052] The first ceiling lighting device 20D is provided on the ceiling of the vehicle interior space 8, and is arranged with its longitudinal direction running along the left-right direction (X direction) of the vehicle 10. The second ceiling lighting device 20E is provided on each side of the left-right direction of the vehicle 10. The second ceiling lighting device 20E is arranged with its longitudinal direction running along the front-rear direction (Y direction) of the vehicle 10.

[0053] 4 is a block diagram illustrating the control functions of a control device 50 that controls a space control system 100 that adjusts the state within the vehicle interior space 8. The space control system 100 includes a transparent display 16, an audio device 18, lighting devices 20A-20E, a vibration generator 22, a scent generator 24, a control device 50, and a memory unit 70. By using these devices, the space control system 100 switches the vehicle interior space 8 between multiple phases, including a sleep phase and a wake phase, which will be described later, and adjusts the vehicle interior space 8 to a space suitable for the occupants. While the sleep phase and the wake phase will be described below, the space control system 100 may also be configured to be switchable to other phases, such as a relaxation phase.

[0054] The control device 50 is configured as a computer including a central processing unit (CPU) and storage devices such as ROM and RAM, and executes various processes described below. The control device 50 is connected to a content control unit 54, an audio control unit 56, a lighting control unit 58, a vibration control unit 60, and a fragrance control unit 62. The control device 50 may be implemented in an ECU (Electronic Control Unit) provided in the vehicle 10, or may be configured as a control device of the space control system 100 that is different from the ECU.

[0055] The control device 50 determines whether it is time to switch from the sleep onset phase to the wake-up phase and whether it is time to end the wake-up phase. The sleep onset phase is implemented before the wake-up phase and is intended to induce the occupant (user) to fall asleep. The wake-up phase is intended to induce the occupant (user) to wake up. By switching the phases in the order of the sleep onset phase and the wake-up phase, the occupant can be woken up in a refreshed state.

[0056] The control device 50 switches from the sleep onset phase to the wakefulness phase when the elapsed time since the start of the sleep onset phase reaches the end timing of the sleep onset phase stored in the memory unit 70. The control device 50 ends the wakefulness phase when the elapsed time since the start of the sleep onset phase reaches the end timing of the wakefulness phase stored in the memory unit 70. The memory unit 70 is configured with a non-volatile rewritable storage device such as a hard disk drive or a solid state drive. The memory unit 70 pre-stores data of video content to be displayed on the transparent display 16. The memory unit 70 also pre-stores data of audio content to be played by the audio device 18. The memory unit 70 also pre-stores the end timings of the sleep onset phase and the wakefulness phase. The end timings of the sleep onset phase and the wakefulness phase can be, for example, the elapsed time from the start of the sleep onset phase.

[0057] The content control unit 54 includes a drive circuit for driving the transparent display 16, and causes the transparent display 16 to display video content corresponding to each phase in accordance with a control signal from the control device 50. The control signal includes data of the video content to be displayed on the transparent display 16.

[0058] The audio control unit 56 includes a drive circuit (e.g., an amplifier) ​​that drives the audio device 18, and plays audio content corresponding to each phase in accordance with a control signal from the control device 50. The audio control unit 56 plays audio content corresponding to, for example, video content displayed on the transparent display 16. This control signal includes data of the audio content to be played by the audio device 18.

[0059] The lighting control unit 58 includes a drive circuit that drives each of the lighting devices 20A to 20E, and adjusts the brightness of each of the lighting devices 20A to 20E (i.e., the illuminance of the vehicle interior space 8) according to each phase in accordance with a control signal from the control device 50.

[0060] The vibration control section 60 includes a drive circuit that drives the vibration generator 22, and adjusts the vibration amount (strength) and frequency of the vibration generator 22 according to each phase in accordance with a control signal from the control device 50.

[0061] The scent control unit 62 includes a drive circuit that drives the scent emitting device 24, and controls the operation of the scent emitting device 24 according to each phase in accordance with a control signal from the control device 50. This control signal includes information indicating the type of scent to be diffused into the vehicle cabin by the scent emitting device 24. The types of scent include, for example, forest scent and citrus scent.

[0062] The control mode of the spatial control system 100 during the sleep phase will be described below. The content control unit 54 plays predefined video content to be used during the sleep phase on the transparent display 16. The video content used during the sleep phase may be a relatively abstract image with a high proportion of blue, which is less sensitive to light when the eyes are closed. The video content used during the sleep phase is configured so that its brightness Br decreases according to the elapsed time ta (see FIG. 5) of the sleep phase. In the following description, brightness Br refers to the average brightness Br of the entire display area of ​​the member onto which the image is projected (i.e., the transparent display 16), unless otherwise specified.

[0063] FIG. 5 shows the temporal change in the average brightness Br of the video content displayed on the transparent display 16. In FIG. 5, the horizontal axis represents time (or hour), and the vertical axis represents the brightness Br [cd / m^2] of the video content. In FIG. 5, time TA corresponds to the timing of switching from the sleep onset phase to the wakefulness phase, i.e., the start of the wakefulness phase (or the end of the sleep onset phase). Time TB corresponds to the time when the brightness Br of the video content reaches the target brightness (maximum value) during the wakefulness phase. Time TC corresponds to the start of the sleep onset phase (start time). Elapsed time ta corresponds to the elapsed time of the sleep onset phase based on the start of the sleep onset phase (time TC), and elapsed time tb corresponds to the elapsed time of the wakefulness phase based on the start of the wakefulness phase (time TA).

[0064] In Figure 5, during the sleep onset phase, which begins at time TC and ends at time TA, the brightness Br of the video content decreases linearly as the time ta elapses during the sleep onset phase, reaching its lowest point at the end of the sleep onset phase (time TA). As a result, the average brightness Br of the video content during the sleep onset phase is higher than the brightness Br of the video content at the end of the sleep onset phase. Note that the average brightness Br of the video content during the sleep onset phase corresponds to the average value of the brightness Br from the start to the end of the sleep onset phase. As a result, the illuminance in the vehicle interior space 8 gradually decreases during the sleep onset phase, allowing the occupant to naturally fall asleep.

[0065] 6 shows the image displayed on the transparent display 16 during the sleep onset phase, at the end of the sleep onset phase (time TA). As shown in FIG. 6, at the end of the sleep onset phase (time TA), the brightness Br of the image content displayed on the transparent display 16 reaches the minimum value that can be set, causing the transparent display 16 to display a substantially black image.

[0066] During the sleep onset phase, the sound control unit 56 causes the sound device 18 to output relaxing sounds. Examples of relaxing sounds include the sound of waves and birdsong. In this case, when playing the sound of waves, for example, the sound control unit 56 plays the sound of waves at a cycle of approximately 10 seconds, which is a breathing cycle suitable for relaxation. The sound control unit 56 can also gradually decrease the volume of the sound output from the sound device 18 according to the elapsed time ta of the sleep onset phase.

[0067] During the sleep phase, the lighting control unit 58 lowers the brightness of each of the lighting devices 20A to 20E in accordance with the brightness Br of the video content, and at the end of the sleep phase (time TA), the lighting control unit 58 stops each of the lighting devices 20A to 20E or adjusts them to the lowest brightness possible.

[0068] The vibration control unit 60 stops the vibration generating device 22 or gradually weakens the intensity (amount of vibration) of the vibration generating device 22 according to the elapsed time ta of the sleep phase so as not to disturb the occupant's sleep during the sleep phase.

[0069] The scent control unit 62 stops the scent emitting device 24 and gradually weakens the amount of fragrance emitted according to the elapsed time ta of the sleep phase so as not to disturb the occupant's sleep during the sleep phase.

[0070] Next, a description will be given of the control mode of the wake-up phase by the space control system 100. When switching from the sleep phase to the wake-up phase, the content control unit 54 displays predefined video content to be used in the wake-up phase on the transparent display 16. The video content to be used in the wake-up phase may be a video that is likely to induce the occupant to wake up, such as a video of a daytime forest, moving animals, or a lush river.

[0071] The video content used during the wakefulness phase is configured so that the average brightness Br increases according to the elapsed time tb of the wakefulness phase. As shown in FIG. 5 , during the wakefulness phase corresponding to the period from time TA onward, the average brightness Br of the video content gradually (linearly) increases according to the elapsed time tb of the wakefulness phase. Furthermore, the video content is configured so that, once the brightness Br of the video content reaches a predetermined target brightness (maximum value) at time TB, the brightness Br of the video content is maintained at that target brightness from time TB onward. In this regard, the illuminance of the vehicle interior space 8 also increases according to the elapsed time tb of the wakefulness phase, and after the brightness Br of the video content reaches the target brightness, the illuminance of the vehicle interior space 8 is maintained at a high level. The target brightness is determined in advance through experiments or the like and is set to a value (e.g., 100 lux) that provides an illumination level in the vehicle interior space 8 suitable for waking the occupants. The target brightness may be, for example, 100 lux or higher. Alternatively, the target brightness may be 500 lux or more, or 1000 lux or more. Note that the video content may be configured so that the brightness Br of the video content is maintained at the target brightness, and then the brightness Br (i.e., the illuminance in the vehicle interior space 8) changes.

[0072] By configuring the video content used during the awakening phase as described above, the average brightness Br of the video content displayed on the transparent display 16 during the awakening phase becomes higher than the brightness Br of the video content at the start (time TA) of the awakening phase. Note that the average brightness Br of the video content during the awakening phase corresponds to the average value of the brightness Br of the video content from the start (time TA) to the end of the awakening phase.

[0073] 7 shows the video content displayed on the transparent display 16 at a relatively early point after switching to the awakening phase. As shown in FIG. 7, for a while after switching to the awakening phase, the brightness Br of the video content displayed on the transparent display 16 is low, and the proportion of the black screen on the transparent display 16 is higher than the proportion of the white screen.

[0074] 8 shows changes in the brightness Br of the video content displayed on the transparent display 16 during the wakefulness phase. The leftmost part of Fig. 8 shows the state of the transparent display 16 near the start of the wakefulness phase (time TA), the center part shows the state of the transparent display 16 when a sufficient amount of time has passed since the wakefulness phase (e.g., time TD in Fig. 5 ), and the rightmost part shows the state of the transparent display 16 after time TB in Fig. 5 .

[0075] Near the start of the awakening phase, as shown in the leftmost part of Figure 8 , the brightness Br is low, and the proportion of black areas on the display surface 26 is large. As time passes from the start of the awakening phase, the brightness Br of the video content gradually increases, and as shown in the center of Figure 8 , the brightness Br becomes higher than at the start of the awakening phase, and the proportion of white areas on the display surface 26 increases. Furthermore, as time passes and the time reaches time TB in Figure 5 , as shown in the rightmost part of Figure 8 , the transparent display 16 reaches the preset target brightness of brightness Br, and most of the display surface 26 is composed of white areas. In this way, as the brightness Br of the transparent display 16 increases during the awakening phase, the proportion of black areas decreases and the proportion of white areas increases, making it easier for the occupant to wake up.

[0076] As described above, the average value of brightness Br in the display area of ​​the video content displayed during the wakefulness phase increases in accordance with the elapsed time tb, thereby increasing the level of wakefulness of the occupant. Furthermore, in a predetermined area S (see FIG. 10 ) included in the display area of ​​the video content during the wakefulness phase, brightness Br may be periodically changed in accordance with the elapsed time tb.

[0077] FIG. 9 shows the relationship between the average brightness Br of the entire display area and the brightness Br in a predetermined area S (see FIG. 10 ) during the wakefulness phase. In FIG. 9 , the horizontal axis represents elapsed time tb, and the vertical axis represents brightness Br. The dashed line in FIG. 9 indicates the average brightness Br of the entire display area. As shown by the dashed line, the average brightness Br of the entire display area increases with elapsed time tb. The solid line in FIG. 9 indicates the brightness Br in a predetermined area S of the display area. The brightness Br of the predetermined area S here is the average brightness Br within the predetermined area S. While the brightness Br in the predetermined area S increases in line with the average brightness Br of the entire display area shown by the dashed line, the brightness Br fluctuates up and down in the short term. For example, as shown in FIG. 9 , the brightness Br may change periodically (wave-like) with elapsed time tb.

[0078] Fig. 10 is a diagram showing changes in brightness Br in a predetermined region S. Section (a) of Fig. 10 shows video content projected onto the transparent display 16, and sections (b) to (d) of Fig. 10 show changes in brightness Br in the predetermined region S according to elapsed time tb. Sections (b) to (d) of Fig. 10 are enlarged views of the predetermined region S shown in section (a) of Fig. 10. Note that the predetermined region S is an example of at least one region of the present disclosure.

[0079] 10, a predetermined area S is set on the transparent display 16. The predetermined area S may be one area or multiple areas.

[0080] As shown in FIG. 10 , the predetermined region S changes from the state shown in section (b) to the state shown in section (c) in FIG. 10 in response to the elapsed time tb. At this time, the brightness Br of the predetermined region S shown in section (c) is lower than the brightness Br of the predetermined region S shown in section (b). Furthermore, the predetermined region S changes from the state shown in section (c) to the state shown in section (d). At this time, the brightness Br of the predetermined region S shown in section (d) is higher than the brightness Br of the predetermined region S shown in section (c). In this manner, the brightness Br of the predetermined region S changes up and down in response to the elapsed time tb. For example, the brightness Br periodically changes up and down in response to the elapsed time tb as shown in FIG. 9 . As a result, the occupant visually recognizes the manner in which the brightness Br of the transparent display 16 changes up and down locally, which increases the visual stimulation and further increases the occupant's level of awakening.

[0081] After time TB shown in Figure 5, for a predetermined period after the average value of the brightness Br of the transparent display 16 has increased to the target brightness, the video content projected onto the transparent display 16 may display an image including a moving object as a subject, or may display an image including a colored subject.

[0082] FIG. 11 is a diagram illustrating an example of video content during the wake phase. Sections (a) to (c) of FIG. 11 correspond to the period during the wake phase during which the average value of brightness Br of the transparent display 16 increases according to the elapsed time tb, i.e., the period from time TA to time TB in FIG. 5 . As shown in sections (a) to (c) of FIG. 11 , the video content during the period during which the average value of brightness Br increases does not need to include a moving object as a subject. The video content may be a grayscale image and not include color. In this regard, the video content may be, for example, a grayscale image of sunlight filtering through trees in which the brightness Br increases according to the elapsed time tb.

[0083] Sections (d) to (i) in FIG. 11 are examples of video content after the average value of brightness Br reaches the target brightness, i.e., after time TB in FIG. 5 . After time TB, the images shown in sections (d) to (i) in FIG. 11 are projected on the transparent display 16, switching between them at predetermined time intervals. Note that sections (d) to (i) are displayed in grayscale for convenience, but in reality, they are displayed as color images. In this case, the color of the image displayed on the transparent display 16 may contain a large amount of green. Because green has a strong relaxing effect, increasing the proportion of green can comfortably wake up the occupant. In this regard, the transparent display 16 may display an image of a forest, as shown in FIG. 11 . Because blue also has a relatively strong relaxing effect, the image may contain a large amount of blue. In this case, for example, an image of a blue sky or an ocean may be displayed on the transparent display 16.

[0084] Furthermore, the video content displayed after time TB may include a moving object as a subject. For example, in section (f) of FIG. 11 , a small bird B perched on a branch is displayed as a moving object. The small bird B adds movement to the video by moving along the branch or flapping its wings. In section (g) of FIG. 11 , a squirrel C in a grassland is displayed as a moving object. The squirrel C adds movement to the video by moving across the grassland, for example. In addition to small birds and squirrels, the swaying of forest leaves may also be displayed as a moving object. In other words, the subject is not particularly limited as long as it is a moving object. After time TB in the awakening phase, adding movement to the video projected on the transparent display 16 further increases the occupant's level of awakening.

[0085] During the awakening phase, the sound control unit 56 causes the sound device 18 to output sounds that match the video content displayed on the transparent display 16. For example, audio recorded of a daytime forest is output from the sound device 18 in accordance with a video of a daytime forest that is displayed during the awakening phase. During the awakening phase, the sound control unit 56 gradually increases the volume of the sound device 18 according to the elapsed time tb of the awakening phase, thereby guiding the occupant to awaken without causing any discomfort to the occupant.

[0086] During the wake-up phase, the lighting control unit 58 turns on the illumination light from each of the lighting devices 20A-20E. The lighting control unit 58 controls each of the lighting devices 20A-20E so that the average brightness of the illumination light during the wake-up phase is higher than the brightness of the illumination light at the start of the wake-up phase (time TA in FIG. 5 ). At this time, the lighting control unit 58 may turn on the illumination light from all of the lighting devices 20A-20E from the start of the wake-up phase, or may gradually increase the number of lighting devices 20A-20E that turn on the illumination light according to the elapsed time tb from the start of the wake-up phase (time TA).

[0087] The lighting control unit 58 may control each of the lighting devices 20A-20E during the wakefulness phase so that the brightness of the illumination light changes in conjunction with the brightness Br of the video content displayed on the transparent display 16. For example, the lighting control unit 58 adjusts the brightness of each of the lighting devices 20A-20E so that when the brightness Br of the video content increases during the wakefulness phase, the brightness of the illumination light increases in proportion thereto. At this time, the average brightness of the video content and the brightness of the illumination light may be controlled to be substantially the same (for example, the difference in brightness is 10% or less). This allows the illumination in the vehicle interior space 8 to be at an illumination level that can induce wakefulness in the occupants during the wakefulness phase without causing discomfort to the occupants.

[0088] In the wake-up phase, the vibration control unit 60 gradually increases the strength (amount of vibration) of the vibration generator 22 according to the elapsed time tb of the wake-up phase.

[0089] In the awakening phase, the fragrance control unit 62 gradually intensifies the fragrance by increasing the amount of fragrance released from the fragrance emitting device 24 according to the elapsed time tb of the awakening phase.

[0090] The following describes the output processing executed in the spatial control system 100. In the following description, it is assumed that the video content (data) to be played in the sleep phase and the video content (data) to be played in the wake phase are stored as separate data in the storage unit 70, and the video content stored in the storage unit 70 is selectively played according to each phase.

[0091] 12 is a flowchart illustrating the flow of control by the control device 50. This flowchart is executed when the sleep onset phase starts.

[0092] When the sleep onset phase begins, the vehicle interior space 8 is adjusted to a state corresponding to the sleep onset phase (step S10). Specifically, the content control unit 54 plays video content corresponding to the sleep onset phase on the transparent display 16. By playing the video content corresponding to the sleep onset phase, for example, the brightness Br of the transparent display 16 gradually decreases according to the elapsed time ta from the start of the sleep onset phase (time TC). The audio control unit 56 outputs a sound corresponding to the sleep onset phase from the audio device 18. The lighting control unit 58 controls the brightness of each of the lighting devices 20A-20E so that the vehicle interior space 8 has an illumination level corresponding to the sleep onset phase. For example, the lighting control unit 58 reduces the illumination of each of the lighting devices 20A-20E or switches each of the lighting devices 20A-20E to a stopped state according to the elapsed time ta of the sleep onset phase. In the sleep onset phase, the vibration control unit 60 guides the occupant to fall asleep by stopping the vibration generator 22 or gradually weakening the intensity (amount of vibration) of the vibration generator 22 over the elapsed time ta. In the sleep onset phase, the scent control unit 62 guides the occupant to fall asleep by stopping the fragrance emitted from the scent generator 24 or decreasing the amount of fragrance emitted over the elapsed time ta.

[0093] Next, the control device 50 determines whether it is time to switch from the sleep phase to the wake phase (step S20). If it is not time to switch to the wake phase (No in S20), the process returns to step S10 and continues adjusting the vehicle interior space 8 in the sleep phase. If it is time to switch to the wake phase (Yes in S20), the process proceeds to step S30, which corresponds to the wake phase.

[0094] In step S30, the vehicle interior space 8 is adjusted to a state corresponding to the wakefulness phase (step S30). Specifically, the content control unit 54 controls the transparent display 16 to play video content corresponding to the wakefulness phase. By playing the video content corresponding to the wakefulness phase, for example, the brightness Br of the transparent display 16 gradually increases according to the elapsed time tb of the wakefulness phase. Here, after time TB of the wakefulness phase (see FIG. 5 ), the occupant's level of wakefulness may be further increased by playing video that includes at least one of a colored subject and a moving subject. The audio control unit 56 controls the audio device 18 to output a sound corresponding to the wakefulness phase. During the wakefulness phase, the audio control unit 56 controls the audio device 18 to output a sound that matches the video content displayed on the transparent display 16, or gradually increase the volume according to the elapsed time tb of the wakefulness phase. The lighting control unit 58 adjusts the brightness of the illumination light from each of the lighting devices 20A-20E so that the vehicle interior space 8 has an illuminance corresponding to the wakefulness phase. The lighting control unit 58 increases the brightness of the illumination light, for example, according to the elapsed time tb of the awakening phase. The vibration control unit 60 gradually increases the intensity (amount of vibration) of the vibration generating device 22 during the awakening phase, for example, according to the elapsed time tb of the awakening phase. The scent control unit 62 releases or diffuses a fragrance that induces the occupant to wake up during the awakening phase. The scent control unit 62 increases the amount of fragrance released from the scent generating device 24, for example, according to the elapsed time tb of the awakening phase. "At least one of a video including a colored subject and a video including a moving object as a subject" may be interpreted as "(a) a video including a colored subject, (b) a video including a moving object as a subject, or (c) a video including a colored subject and a video including a moving object as a subject."

[0095] Next, the control device 50 determines whether the end timing of the awakening phase has been reached (step S40). If the end timing has not been reached (No in S40), the control device 50 continues to execute step S30. If the end timing has been reached, the control device 50 ends the adjustment of the vehicle interior space 8 in the awakening phase.

[0096] [Operations and Effects] The following describes the operations and effects of adjusting the state of the vehicle interior space 8 using the space control system 100. In this embodiment, the occupants are induced to wake up by increasing the brightness of the lighting devices 20A-20E during the wakefulness phase. However, because there are limitations on the placement of the lighting devices 20A-20E in the vehicle interior space 8, it is possible that the illuminance sufficient to induce the occupants to wake up cannot be ensured within the vehicle interior space 8. In contrast, in this embodiment, even if the lighting devices 20A-20E cannot ensure sufficient illuminance during the wakefulness phase, the brightness Br of the video content displayed on the transparent display 16 is increased during the wakefulness phase, thereby ensuring the illuminance sufficient to induce the occupants to wake up in the vehicle interior space 8.

[0097] In this embodiment, the average brightness Br of the video content during the awakening phase is set higher than the brightness Br of the video content at the start of the awakening phase (time TA in Figure 5), thereby appropriately guiding the occupant to awaken.

[0098] FIG. 13 is a graph showing the average values ​​of the levels of alertness for five subjects when video content was displayed under Condition 1 and Condition 2, which will be described later.

[0099] The level of arousal shown on the vertical axis of Figure 13 is the average score of five subjects who were asked to rate (answer) their level of arousal on a six-point scale (1 point: completely disagree, 2 points: disagree, 3 points: disagree somewhat, 4 points: agree, 5 points: agree, 6 points: agree strongly) after playing video content under each of conditions 1 and 2.

[0100] In condition 1, the video content shown in Fig. 5 was played during the sleep phase, and then the video content shown in Fig. 8 was played during the wake phase, and five subjects were asked to rate their wakefulness on a six-point scale after the wake phase ended. In other words, in condition 1, the average brightness Br of the video content during the wake phase was set higher than the brightness Br of the video content at the start of the wake phase (time TA), and then the subjects were asked to rate their wakefulness.

[0101] In condition 2, the video content shown in Figure 5 was played during the sleep phase, and then a black screen was played as the video content for the wake-up phase during the wake-up phase. After the wake-up phase ended, the five subjects were asked to rate their wakefulness on a six-point scale. In other words, in condition 2, the brightness Br during the wake-up phase was maintained at a low level, and then the subjects were asked to rate their wakefulness.

[0102] 13, the results showed that condition 1 resulted in a higher level of wakefulness than condition 2. In other words, the results showed that the subject's wakefulness increased when the brightness Br of the video content during the wakefulness phase was higher than the brightness Br of the video content at the start of the wakefulness phase.

[0103] In this embodiment, as shown in Figure 5, the brightness Br of the video content during the wakefulness phase increases according to the elapsed time tb of the wakefulness phase, and the illuminance of the vehicle interior space 8 also gradually increases according to the elapsed time tb, so that the occupants can be guided to wakefulness without feeling uncomfortable.

[0104] In this embodiment, the brightness of each of the lighting devices 20A-20E is adjusted so that the average brightness of the illumination light from each of the lighting devices 20A-20E during the awakening phase is higher than the brightness at the start of the awakening phase (time TA in FIG. 5 ), thereby appropriately guiding the occupant to awaken. At this time, by changing the brightness of the illumination light according to the brightness Br of the video content, the brightness of the illumination light increases together with the brightness Br of the video content, and therefore the occupant can be induced to awaken without feeling uncomfortable.

[0105] In this embodiment, by setting the average brightness Br of the video content during the sleep onset phase higher than the brightness Br of the video content at the end of the sleep onset phase (time TA in FIG. 5 ), the illuminance of the vehicle interior space 8 decreases during the sleep onset phase, thereby guiding the occupant to fall asleep during the sleep onset phase. At this time, the brightness Br of the video content gradually decreases in accordance with the elapsed time ta of the sleep onset phase, and the illuminance of the vehicle interior space 8 also gradually decreases in accordance with the elapsed time ta, thereby guiding the occupant to fall asleep naturally.

[0106] In this embodiment, during the awakening phase, the volume of the sound device 18 is increased in accordance with the elapsed time tb of the awakening phase, so that the occupant is also guided to awaken by the sound, and by gradually increasing the volume, the occupant can be guided to awaken without feeling uncomfortable.

[0107] In this embodiment, during the awakening phase, the strength (amount of vibration) of the vibration generating device 22 is increased according to the elapsed time tb of the awakening phase, so that the occupant is also induced to awaken by the vibration, and by the vibration gradually becoming stronger, the occupant can be induced to awaken without causing any discomfort to the occupant.

[0108] In this embodiment, during the awakening phase, the fragrance is released or diffused from the fragrance emitting device 24, so that the passenger can be induced to awaken by the fragrance as well.

[0109] [Modifications] The present disclosure can employ the following modifications. For example, in the above embodiment, the space control system 100 is applied to the vehicle interior space 8, but the present disclosure is not limited to the vehicle interior space. For example, the present disclosure can be employed in a private space such as a bedroom.

[0110] In the above embodiment, the video content is configured so that the brightness Br of the video content increases continuously and linearly with the elapsed time tb between time TA and time TB, which correspond to the awakening phase in Figure 5, but this is not necessarily limited to a linear change. For example, the brightness Br of the video content may change in a curved manner with the elapsed time tb, or the brightness Br may change discontinuously. Specifically, the brightness Br of the video content may change in steps.

[0111] In the above embodiment, the brightness Br of the same video content changes during the awakening phase, but a configuration may be adopted in which the brightness Br of the video content gradually increases while multiple video contents are displayed during the awakening phase. In this case, when switching between video contents, video contents are selected within a range in which the brightness Br of the video content does not decrease.

[0112] In the above embodiment, the lighting device 20 is composed of the lower lighting device 20A, the first upper lighting device 20B, the second upper lighting device 20C, the first ceiling lighting device 20D, and a pair of second ceiling lighting devices 20E. However, it is not necessary to include all of these. That is, the lighting device 20 may include at least one of these lighting devices 20A to 20E. If the transparent display 16 alone can ensure a brightness Br sufficient to wake the occupant, the lighting device 20A to 20E may not be included. The phrase "at least one of these lighting devices 20A to 20E" may also be interpreted as "(a) the lower lighting device 20A, (b) the first upper lighting device 20B, (c) the second upper lighting device 20C, (d) the first ceiling lighting device 20D, (e) a pair of second ceiling lighting devices 20E, or (f) any combination thereof." "If the transparent display 16 alone can ensure a brightness Br sufficient to wake up the occupant, then the lighting devices 20A to 20E do not need to be provided" may also be interpreted as "If the transparent display 16 can display content having a brightness Br sufficient to wake up the occupant, then the lighting devices 20A to 20E do not need to be provided."

[0113] In the above embodiment, the sound devices 18 are disposed near the transparent display 16 on both sides of the vehicle 10 in the left-right direction (X direction), but the location of the sound devices 18 is not limited to the above embodiment. For example, the sound devices 18 may be disposed behind the rear seats 14 and / or on the ceiling of the vehicle 10.

[0114] In the above embodiment, the scent emitting device 24 is disposed in the center of the vehicle 10 in the left-right direction, but the location of the scent emitting device 24 is not limited to the above embodiment. For example, the scent emitting device 24 may be disposed on both sides of the vehicle 10 in the left-right direction.

[0115] In the above embodiment, the spatial control system 100 includes the transparent display 16, the acoustic device 18, the lighting devices 20A to 20E, the vibration generator 22, and the fragrance generator 24. However, the acoustic device 18, the lighting devices 20A to 20E, the vibration generator 22, and the fragrance generator 24 are not essential components, and at least one of them may be omitted. "At least one of these" may be interpreted as "(a) the acoustic device 18, (b) the lighting device 20A, (c) the lighting device 20B, (d) the lighting device 20C, (e) the lighting device 20D, (f) the lighting device 20E, (g) the vibration generator 22, (h) the fragrance generator 24, or (i) any combination of the acoustic device 18, the lighting device 20A, the lighting device 20B, the lighting device 20C, the lighting device 20D, the lighting device 20E, the vibration generator 22, and the fragrance generator 24."

[0116] In the above embodiment, the spatial control system 100 was capable of switching between a sleep phase and a wake phase, but other phases may be added, such as being able to switch to a relaxation phase that puts the occupant into a relaxed state in addition to these phases.

[0117] In the above embodiment, the video content corresponding to the sleep onset phase and the video content corresponding to the wakefulness phase are separately stored in the storage unit 70. However, the video content for the sleep onset phase and the video content for the wakefulness phase may be stored as a single piece of video data in the storage unit 70. For example, video data in which the first 10 minutes are video corresponding to the sleep onset phase and the last 10 minutes are video corresponding to the wakefulness phase is stored in the storage unit 70. When this video data is played back, the video content for the sleep onset phase is played back on the transparent display 16 for the first 10 minutes, and then, 10 minutes after the start of the sleep onset phase, the video content for the wakefulness phase is played back on the transparent display 16.

[0118] In the above embodiment, the brightness Br of the video content during the sleep phase is adjusted by playing the video content used in the sleep phase, and the brightness Br of the video content during each phase is adjusted by playing the video content used in the wake phase. However, the brightness Br of the video content may also be adjusted by adjusting the light emission amount of the backlight of the transparent display 16.

[0119] In the above embodiment, as shown in Fig. 11 , an image that satisfies both a colored image and an image that includes a moving object as a subject is displayed in the second half of the awakening phase (after time TB in Fig. 5 ), but an image that satisfies either one of these may be generated. That is, the transparent display 16 may display an image that is colored but does not include a moving object as a subject, or an image that is grayscale but includes a moving object as a subject.

[0120] In the above embodiment, the space control system 100 is applied to the vehicle interior space 8 as an example. However, the present disclosure is not limited to this. For example, the space control system may be applied to an office. Specifically, the space control system may be realized by using a display installed in the office as a video projection device. As an example, during a lunch break, the brightness Br of the video content displayed on the display may be changed, and during a sleep phase, the brightness Br of the video content on the display may be lowered to encourage employees to sleep. Before the end of the lunch break, the system may switch to a wake phase, and the brightness Br of the video content may be increased to encourage employees to wake up. In this case, an office lighting device may be used, and the brightness of the lighting device's illumination may be changed depending on the sleep phase and the wake phase.

[0121] The spatial control system described above may be applied to a massage chair. Specifically, the spatial control system may be realized by using a display attached to the massage chair as a video projection device. For example, the sleep time is set from an input unit of the massage chair. A control device attached to the massage chair sets the duration of the sleep onset phase and the duration of the wakefulness phase based on the set sleep time. Once the durations of the sleep onset phase and the wakefulness phase are set, the brightness Br of the display is adjusted according to each phase. A lighting device may be attached to the massage chair, and the brightness of the illumination light from the lighting device may be adjusted to change the brightness during the sleep onset phase and the wakefulness phase, thereby promoting sleep or wakefulness in the user.

[0122] The spatial control system described above may be applied to a home theater. In this case, the large display provided in the home theater can be used as a video projection device, and the speakers provided in the home theater can be used as a sound device.

[0123] 8: Vehicle interior space (space) 10: Vehicle (moving body) 16: Transparent display (image projection device) 18: Acoustic device 20A to 20E: Lighting device 22: Vibration generator 50: Control device 100: Space control system

Claims

1. A space control system comprising a video projection device disposed inside a space and a control device, wherein the control device projects video content used in the awakening phase onto the video projection device during an awakening phase for inducing a user to wake up, and an average brightness of the video content during the awakening phase is higher than a brightness of the video content at a start point of the awakening phase.

2. The space control system according to claim 1, wherein the space is an interior space of a vehicle, and the video projection device is disposed between a rear seat and a front seat of the vehicle.

3. The space control system according to claim 1, wherein an average value of brightness in a display area of the video content during the awakening phase increases according to an elapsed time.

4. The space control system according to claim 1, further comprising an illumination device for illuminating the space, wherein the control device turns on illumination light for the illumination device during the awakening phase, and an average brightness of the illumination light during the awakening phase is higher than a brightness of the illumination light at a start point of the awakening phase.

5. The space control system according to claim 4, wherein the control device controls the illumination device such that a brightness of the illumination light changes according to a brightness of the video content during the awakening phase.

6. The space control system according to claim 1, further including a falling asleep phase for inducing the user to fall asleep before the awakening phase, and an average brightness of the video content during the falling asleep phase is higher than a brightness of the video content at an end point of the falling asleep phase.

7. The space control system according to claim 6, wherein the brightness of the video content during the falling asleep phase decreases according to an elapsed time.

8. The space control system according to claim 1, further comprising an acoustic device for generating sound in the space, wherein the control device increases a volume of the acoustic device according to an elapsed time of the awakening phase.

9. The space control system according to claim 1, further comprising a vibration generating device for applying vibration to the user, wherein the control device increases an amount of vibration of the vibration generating device according to an elapsed time of the awakening phase.

10. The spatial control system according to claim 3, wherein during the awakening phase, the video content changes periodically in brightness over time in at least one area included in the display area.

11. The spatial control system according to claim 3, wherein during the period when the average value of the brightness of the video content in the display area increases over time, the video content does not include a moving object as a subject, and during the period after the average value of the brightness of the video content in the display area has increased over time, the video content includes a moving object as a subject.

12. The spatial control system according to claim 3, wherein during the period when the average value of the brightness of the video content in the display area increases over time, the video content is a grayscale video, and during the period after the average value of the brightness of the video content in the display area has increased over time, the video content is a video including a colored subject.

13. A moving object comprising a video projection device disposed inside a space and a control device, wherein the control device causes the video projection device to project video content used in the awakening phase during an awakening phase for inducing a user to wake up, and an average brightness of the video content during the awakening phase is higher than a brightness of the video content at a start point of the awakening phase.

Images