JP7138335B2 - Video display device - Google Patents

Description

Application of Article 30, Paragraph 2 of the Patent Act Mono-Coto Innovation 2017 FINAL (Date: December 27, 2017)

The present invention relates to a video display device that presents video to viewers.

2. Description of the Related Art Conventionally, there has been known a video display device that presents a video to a viewer in a special mode of use different from that of a normal television. For example, Patent Literature 1 discloses a video display system that displays a stereoscopic video on a silver screen installed on the ceiling of a bedroom and presents the stereoscopic video to an observer lying on his or her back. In this image display system, a pair of projectors for projecting left-eye and right-eye images are used as image output means. A virtual three-dimensional screen is displayed in which the image is recognized in front or in the background. Further, Patent Document 2 discloses a head-mounted display type image display device that provides a simulated experience to a person who cannot move freely, such as a hospital patient, although it is not intended for a lying viewer.

JP 2011-151676 A Japanese Patent Application Laid-Open No. 2004-129180

By the way, in an environment where the space occupied by an individual is limited, such as when being hospitalized in a shared room in a hospital, or when sleeping in an evacuation shelter in the event of a disaster, one's actions are often exposed to the public eye. In addition, depending on the viewing environment, it may be necessary to consider sound leakage and light leakage to the surroundings. When watching videos privately in such a situation, the facial expressions of the viewers themselves are exposed to the public eye, so privacy cannot be ensured. I can't get a sense of immersion.

The present invention has been made in view of such circumstances, and an object of the present invention is to enhance the sense of immersion in images while ensuring the viewer's privacy.

In order to solve this problem, the present invention provides a video display device that has a shield, one entrance, and a video display unit, and presents video to the viewer while ensuring the privacy of the viewer. do. The shield has an open bottom and an interior space. The open bottom rests on the mounting surface. The internal space covers the head of the viewer lying on his/her back on the installation surface. One doorway is provided on the side of the shield, and the viewer's head is inserted into the inner space. The image display section is provided in the inner space of the shield. Moreover, the shield has a closed shape from the open bottom to the top except for one doorway.

Here, in the present invention, the shield may be provided with a soundproof material. Also, the display surface of the image display unit is preferably flat or curved toward the head. Furthermore, a position adjusting mechanism may be provided which can adjust the relative position of the display surface of the image display unit with respect to the head or can extend and retract the height of the shield.

Also, in the present invention, at least one of a speaker and a microphone may be provided (including both). A speaker is provided in the inner space of the shield and presents the sound to the viewer. A microphone is provided in the inner space of the shield and collects the uttered sound of the viewer.

In the present invention, at least one of a stereoscopic image display section and a camera may be provided (including both). The stereoscopic image display unit is provided in the inner space of the shield and displays a stereoscopic image of a person other than the viewer. A camera is provided in the inner space of the shield and captures a stereoscopic image of the viewer. In this case, the stereoscopic image display unit is arranged in the vicinity of the viewer in the lateral direction, and displays a stereoscopic image including at least the face of the other party of the two-way communication, and the camera displays the face of the other party of the two-way communication. You may shoot a stereoscopic image of yourself in order to transmit a stereoscopic image including at least

According to the present invention, since the viewer's face is covered with the shield, it is possible to prevent the viewer's facial expression from being exposed to the public eye, and the viewer can view the video without worrying about light leakage to the surroundings. can concentrate on Therefore, even in situations where the space occupied by individuals is limited, such as hospitals and public gathering places, it is possible to secure the viewer's privacy and enhance the sense of immersion in the video.

Appearance perspective view showing a usage example of the image display device top view of shield front view of shield Side view of shield Layout of electronic devices inside the shield System configuration diagram of image display device Explanatory diagram of co-sleeping mode

FIG. 1 is an external perspective view showing a usage example of a video display device according to this embodiment. This image display device 1 is installed on a flat installation surface 2 such as a hospital bed or a floor surface of an evacuation shelter all the time or each time. The image display device 1 presents an image to a viewer U lying on a horizontal installation surface 2 as shown. The image display device 1 has a shield 3 . The head of the viewer U is covered by the shield 3, and the facial expression of the viewer U cannot be read from the outside (it is blocked from the outside world). A viewer U whose face is covered views video, audio, and the like through electronic devices 4 installed inside the shield 3 . The head of the viewer U is moved in and out of the shield 3 through an entrance 3 a provided on the side surface of the shield 3 . In addition, the shield 3 includes a height adjustment mechanism (such as a bellows) that can adjust the overall height, and a curtain (shield) for shielding the doorway 3 where the head is inserted into the shield 3. may have In the following description, an example will be described on the assumption that the viewer U is lying on the horizontal installation surface 2. It may be in a standing posture along the installation surface 2 .

2 is a top view of the shield 3, FIG. 3 is its front view, and FIG. 4 is its side view. The shield 3 has a substantially dome shape, that is, has an external shape obtained by partially cutting the dome shape in the vertical direction, and an internal space for accommodating the head of the viewer U is provided inside. It is However, the external shape of the shield 3 is not limited to a substantially dome shape, and may include a substantially hemispherical shape, a substantially cubic shape, or a substantially arched shape, as long as an internal space capable of accommodating the head of the viewer U can be secured. , may be of any external shape. In addition, the shield 3 is sufficient if it has an internal space for covering at least the head of the viewer U. An openable box-shaped body that covers the whole body of the person U may be used as the shield 3 .

Any material may be used for the shield 3 as long as the facial expression of the viewer U cannot be seen from the outside. It is preferable to The significance of using the light-shielding dome 3 is primarily to prevent the facial expression of the viewer U from being seen from the outside. The interior of the chamber 3 is preferably a dark room, and for that purpose, it is desirable to use a light-shielding material.

A doorway 3a for inserting the head of the viewer U into the inner space of the shield 3 is provided in front of the shield 3 so as to communicate the inside and the outside of the shield. By providing the doorway 3a, the viewer U can easily put the head inside the shield 3 without lifting the image display device 1. - 特許庁This is particularly advantageous when the image display device 1 is heavy and difficult to lift. In addition, the opening shape of the entrance 3a is larger than the cross section of the head of the viewer U (who is assumed to use the image display device 1) when viewed from the front (the front view in FIG. 3). Moreover, it is set to be smaller than the cross section of the internal space of the shield 3 . By narrowing the shape of the opening as much as possible within a range where the head of the viewer U can be put in and taken out, the viewing range of the viewer U is further shielded, so that the feeling of immersion of the viewer U can be further enhanced.

In this embodiment, the size of the shield 3 is set to 900 mm in width, 600 mm in height, and 600 mm in depth, for example, and the size of the doorway 3a is set to 600 mm in width, and 300 mm in height, for example. .

Further, as shown in FIG. 2, the shield 3 is provided with a soundproof material 3b. Specifically, the soundproof material 3b is provided on substantially the entire inner surface of the shield 3 (excluding openings such as the doorway 3a). The soundproofing material 3b may be integrally formed with the shield 3, or may be attached by attaching a soundproofing material as a separate member or by fixing tools such as screws. This suppresses the sound inside the shield 3 from leaking to the outside, or suppresses the noise from outside the shield 3 from leaking into the inside. Sound insulating materials such as gypsum board and plywood, sound absorbing materials such as glass wool and mineralsocks, rubber vibration insulating materials, and the like are known as the sound insulating material 3b. is preferably used.

FIG. 5 is a layout diagram of the electronic devices 4 in the shield 3. As shown in FIG. In this embodiment, the electronic devices 4 installed in the inner space of the shield 3 include a video display section 4a, a speaker 4b, a microphone 4c, a stereoscopic image display section 4d, and a camera 4e. However, although the image display unit 4a is essential for realizing the function of presenting an image to the viewer U, the speaker 4b can be replaced with headphones, and thus may be omitted. Also, the microphone 4c, the stereoscopic image display unit 4d, and the camera 4e may be installed as necessary in accordance with the functions to be implemented in the image display device 1. FIG.

The image display unit 4a is arranged at a position facing the viewer U lying down, and presents the viewer U with an image. As the image display unit 4a, a self-luminous display with a flat display surface such as a liquid crystal display or an organic EL display, or a projector with a flat display surface (projection surface) may be used. good. In particular, when an organic EL monitor is used, the display surface may be curved toward the viewer's U head by taking advantage of its characteristics. This is advantageous in that the display surface can be widened even in a limited space such as the shield 3 and that the display surface can be set equidistant from the viewer's U viewpoint.

The image display unit 4a is basically arranged at a position directly facing the head of the viewer U in the supine position (a state of lying on one's back), and the distance to the display surface is set appropriately. there is A position adjustment mechanism such as an arm mechanism or a slide mechanism may be provided so that the relative position of the display surface of the image display unit 4a with respect to the head of the viewer U can be freely adjusted. Further, such a position adjusting mechanism may be a mechanism that allows the shield 3 to extend and contract to the height. Thereby, the position of the display surface of the image display unit 4a can be adjusted regardless of where the face of the viewer U is facing, including the lateral recumbent position (the state of lying down facing the side).

The pair of speakers 4b are arranged near the left and right ears of the lying viewer U, and presents the sound to the viewer U. As shown in FIG. The shape of each speaker 4b is not limited and may be any shape. Moreover, in order to suppress sound leakage to the outside of the shield 3, it is preferable to have directivity toward the ear of the viewer U such that the right speaker 4b is for the right ear and the left speaker 4b is for the left ear. In addition, the number of speakers 4b is not limited to two, and at least one is sufficient, and of course, three or more may be used.

The microphone 4c picks up the uttered sound uttered by the viewer U lying down. The 3D image unit 4d is used during two-way communication, and displays a 3D image (3D hologram) of the viewer U's other party (communication partner). The type of the stereoscopic image display unit 4d is not particularly limited, but as shown in FIG. 5, a pepper's ghost type stereoscopic image apparatus having a transparent plate such as an acrylic plate and a projection unit can be used. The camera 4e is used during two-way communication and captures a stereoscopic image (3D hologram) of the viewer U.

FIG. 6 is a system configuration diagram of the video display device 1. As shown in FIG. The video display unit 4a, the speaker 4b, the microphone 4c, the stereoscopic image display unit 4d, and the camera 4e exchange data with an external system via the input/output interface 4f. Specifically, the image display unit 4a displays an image based on an externally input image signal. The speaker 4b outputs sound based on an externally input audio signal. The microphone 4c outputs an audio signal collected by itself to the outside. The 3D image display unit 4d displays a 3D image based on a 3D image signal input from the outside. The camera 4e outputs a stereoscopic image signal captured by itself to the outside. The video display device 1 can be used in two ways: as an audiovisual device for the viewer U to personally view audiovisual audio, and as a communication tool for two-way communication between the viewer U and others. do. Of course, it is also possible for the viewer U to communicate with others while viewing the video and audio.

In this embodiment, as an example of two-way communication performed by the video display device 1, a "co-sleeping mode" as shown in FIG. 7 is implemented. 7, of the electronic devices 4a to 4e shown in FIG. 5, components other than the microphone 4c, stereoscopic image display section 4d and camera 4d are omitted. The “co-sleeping mode” is a three-dimensional image of the other party (the image shown by the broken line) as if the viewers U are lying close to themselves (viewers U) so that the viewers U who are in distant places can feel each other's presence close to each other. ). In order for both the self and the other party to realize the "co-sleeping mode", it is sufficient that each of them has a stereoscopic image display section 4d and a camera 4e. That is, as long as this premise is satisfied, the device used by the other party does not necessarily have to be the video display device 1, and may be a smart phone.

As can be seen from the positional relationship in FIG. 7, the image of the other party displayed by the stereoscopic image display unit 4d is located in the vicinity of the viewer U, and viewed from the viewer U, it is on the extension line of this display location. Preferably, a microphone 4c and a camera 4e are arranged at . As a result, not only oneself but also the other party can realize a sensible co-sleeping experience in which each other's existence can be felt close to each other.

In this case, the 3D image unit 4d produces a 3D image including at least the other party's face in the vicinity of the viewer U in the lateral direction, in other words, in the vicinity of the front of the viewer U when the viewer U is lying sideways. (In addition, it may include scenery etc.) is displayed. Moreover, it is preferable that the microphone 4c and the camera 4e are arranged at positions directly facing the viewer U lying sideways. The camera 4e captures a stereoscopic image including at least the face of the viewer U (and may also include scenery, etc.). This stereoscopic image is used to make the other party of two-way communication feel as if they are lying next to them.

A stereoscopic image of one's own imaged by one's own camera 4e is transmitted to the other party through one's own input/output interface 4f. The transmitted 3D image is received by the input/output interface 4f of the other party and presented to the other party via the 3D image display unit 4d of the other party (however, the other party does not have to display a 3D image). Similarly, the other party's stereoscopic video imaged by the other party's camera 4e is transmitted to itself by the other party's input/output interface 4f. This transmitted stereoscopic image is received by its own input/output interface 4f and presented to itself via its own stereoscopic image display unit 4d. On the other hand, the own uttered sound collected by the own microphone 4c is transmitted to the other party by the own input/output interface 4f. The transmitted voiced sound is received by the input/output interface 4f of the other party and presented to the other party via the speaker 4b of the other party (or a device having a speaker). Similarly, the other party's uttered sound collected by the other party's microphone 4c is transmitted to itself by the other party's input/output interface 4f. The transmitted voiced sound is received by its own input/output interface 4f and presented to itself via its own speaker 4b, earphones, headphones, or the like. Such two-way communication may be performed via a mobile phone communication network, the Internet communication network, or the like, regardless of whether it is wired communication or wireless communication. It is also possible to use the functions of a terminal device such as a smart phone.

Also, during the above communication, a synchronization function may be implemented so that the self and the other party can share and view the same content on both video display units 4a. Such content includes movies, television programs, web content, and the like. As a form of content sharing, there is a form in which the input/output interfaces 4f of the self and the other party respectively receive from a common server, and a form in which the content being reproduced by the self is duplicated and transmitted to the other party.

Thus, according to the present embodiment, the head of the viewer U lying down is covered with the shield 3, and the facial expression of the viewer U cannot be recognized from the outside. Therefore, the viewer U can avoid having his or her facial expression exposed to the public eye, and can concentrate on the video without worrying about light leakage to the surroundings. As a result, even in situations where the space occupied by individuals is limited, such as hospitals and public gathering places, the privacy of viewers U can be ensured, and images (other interactive communication ) can increase immersion and empathy (e.g., immersing yourself in grief in isolation).

Further, according to the present embodiment, by providing the doorway 3a for inserting the head of the viewer U in the inner space of the shield 3, the viewer U can easily lift up the shield 3. The head can be put in and taken out.

Further, according to the present embodiment, by providing the shield 3 with the soundproof material 3b, it is possible to suppress the leakage of the sound inside the shield 3 to the outside, or the leakage of the noise outside the shield 3 into the inside. It is possible to achieve a better viewing environment.

Furthermore, according to this embodiment, by mounting the stereoscopic image display unit 4d and the camera 4e on the video display device 1, the two-way communication described above can be realized. In particular, if the "co-sleeping mode" described above is implemented, it is possible for the viewer U to experience the sensation of co-sleeping with a communication partner (best friend, lover, etc.). In this way, the video display device 1 according to the present embodiment can be widely used for various purposes such as personal spaces in hospitals or evacuation, watching movies alone, and communication with long-distance family and friends.

1 image display device 2 installation surface 3 shield 3a doorway 3b soundproof material 4 electronic devices 4a image display unit 4b speaker 4c microphone 4d stereoscopic image display unit 4e camera 4f communication unit

Claims (7)

In a video display device that presents a video to a viewer while ensuring the viewer's privacy ,
a shield having an open bottom placed on an installation surface and an internal space covering the head of a viewer lying supine on the installation surface ;
a doorway provided on the side of the shield for inserting the head into the interior space;
and an image display unit provided in the inner space of the shield ,
The image display device , wherein the shield has a closed shape from the opening bottom toward the top except for the one entrance . 2. The image display device according to claim 1 , further comprising a soundproof material provided on said shield. ,
3. The image display device according to claim 1, wherein the display surface of the image display unit is flat or curved toward the head. 4. The apparatus according to any one of claims 1 to 3 , further comprising a position adjusting mechanism capable of adjusting a relative position of the display surface of said image display unit with respect to said head, or adjusting a height of said shield. The video display device described in . It further comprises at least one of a speaker that is provided in the inner space of the shield and presents the sound to the viewer, and a microphone that is provided in the inner space of the shield and collects the uttered sound of the viewer. 5. The image display device according to any one of claims 1 to 4 . At least one of a stereoscopic image display unit provided in the inner space of the shield and displaying a stereoscopic image of a person other than the viewer, and a camera provided in the inner space of the shield and capturing a stereoscopic image of the viewer. 6. The image display device according to any one of claims 1 to 5 , further comprising: The stereoscopic image display unit displays a stereoscopic image including at least the face of the other party in two-way communication,
7. The image display device according to claim 6 , wherein said camera captures a stereoscopic image of itself in order to transmit the stereoscopic image including at least its own face to the other party of two-way communication.

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