JP6157684B1 - Image display device - Google Patents

Abstract

In an image display device in which a virtual image is formed on the back side of a transparent wall by reflecting light rays on the transparent wall, the reflectance can be increased even when a glass plate is used for the transparent wall. . An image display device is provided. A transparent wall 13 capable of partitioning indoors and outdoors at night and reflecting a part of light from the room to the room indoors, a screen wall 16 provided facing the transparent wall 13 in the room, and a screen wall 16 And a projector 17 that projects an image toward the projector. The light from the image 19 projected and imaged from the projector 17 toward the screen wall 16 reaches the transparent wall 13 and then is reflected by the transparent wall 13, so that the object 22 represented by the image 19 is outdoors. Can appear to exist in the space. The transparent wall 13 has a glass plate and a reflectance changing film attached to the surface on the indoor side of the glass plate. [Selection] Figure 1

Description

  The present invention relates to an image display device, and more particularly, to an image display device that allows an image projected on a screen to be reflected by another surface so as to be shown to an audience.

  As such an image display device, there is one described in Patent Document 1. This is because the image projected from the projector onto the screen appears as a virtual image at a position where the image has been transmitted through the half mirror due to the reflecting action of the half mirror. As the half mirror, chrome vacuum-deposited on the glass surface or transparent glass is used.

Japanese Utility Model Publication No. 4-50096

  However, in the image display device disclosed in Patent Document 1, when the half-mirror is vacuum-deposited with chromium on the glass surface, the half-mirror manufacturing process is complicated and requires a corresponding manufacturing cost. In addition, when it is desired to apply to a large size such as the wall surface of a building, the feasibility must be questioned, such as the need for a large vacuum deposition apparatus for that purpose. On the other hand, when transparent glass is used as a half mirror, it is inexpensive and cannot be made large, but its reflectivity is low, so the image obtained by reflecting light rays with the half mirror is dark. There is only.

  Therefore, the present invention can increase the reflectance even when a glass plate is used for a transparent wall in an image display device in which a virtual image is formed behind the transparent wall by reflecting light rays on the transparent wall. The purpose is to.

In order to achieve this object, the image display device of the present invention provides:
A transparent wall that partitions the interior and exterior of the night and reflects part of the light from the interior of the room to the interior of the room,
A screen wall provided facing the transparent wall in the room;
A projector that projects an image toward the screen wall;
The light from the image projected and imaged from the projector toward the screen wall reaches the transparent wall and then is reflected by the transparent wall so that the object represented by the image exists in the outdoor space. An image display device that can be shown,
The said transparent wall has a glass plate and the film for reflectance change affixed on the indoor surface of this glass plate, It is characterized by the above-mentioned.

  With such a configuration, the transparent wall has a glass plate and a reflectance changing film attached to the surface on the indoor side of the glass plate, so the reflectance of the glass plate is low. However, the reflectance can be changed, particularly increased by the film, and an easy-to-see image can be displayed. Further, since the transparent wall does not have a vacuum vapor deposition film or the like and is merely affixed to a glass plate, a large wall body that partitions the interior and the exterior can be configured easily and inexpensively.

According to the image display device of the present invention, by reducing the brightness of the image projected from the projector toward the screen wall, the boundary between the frame border of the background of the image projected on the screen wall and the screen wall is less noticeable. It is preferable to have a filter for this in front of the projection lens of the projector .

  With such a configuration, the boundary between the background frame edge of the image projected on the screen wall and the screen wall can be made inconspicuous, and an easy-to-view image can be obtained.

  According to the image display device of the present invention, by projecting the image toward the transparent wall from the transparent wall and projecting the image toward the transparent wall, the projected image is reflected by the transparent wall and then further reflected by the reflective surface. It is preferable to further include a projection device that subsequently projects onto a surface other than the transparent wall. The reflective surface can be formed on the surface of the reinforcing rib attached to the transparent wall.

  With such a configuration, an image can be projected on a portion other than the transparent wall. If the reflecting surface is formed on the surface of the reinforcing rib attached to the transparent wall, the reinforcing rib indispensable for installing the transparent wall can be used as a means for projecting an image.

  According to the image display device of the present invention, a plurality of projectors are configured to project one image, and some of the plurality of projectors project other images instead of the original images. Images can be switched as possible.

  With such a configuration, an image rich in change can be obtained.

  According to the present invention, the transparent wall has a glass plate and a film for changing the reflectance attached to the surface on the indoor side of the glass plate. Therefore, even if the reflectance of the glass plate is low, the film The reflectance can be changed, particularly increased, and an easy-to-see image can be displayed. Further, since the transparent wall does not have a vacuum vapor deposition film or the like and is merely affixed to a glass plate, a large wall body that partitions the interior and the exterior can be configured easily and inexpensively.

1 is a diagram illustrating an overall configuration of an image display device according to an embodiment of the present invention. It is sectional drawing of the principal part of the transparent wall in FIG. It is a figure which shows the mode of the image projected on the glass wall in FIG. It is an enlarged view of the projector in FIG. It is a figure which shows the modification of the image display apparatus of embodiment of this invention. It is a figure which shows operation | movement of the image display apparatus of FIG. It is a figure which shows the operation example of the image display apparatus of embodiment of this invention. It is a figure which shows the apparatus structure for performing the operation | movement of FIG. It is a figure which shows the control function of the image display apparatus of embodiment of this invention.

  FIG. 1 shows an interior 11 and an exterior 12 of a building at night. At the boundary between the inside 11 and the outside 12 of the building, a transparent wall 13 is installed over the entire wall surface as shown in the figure, for example. As shown in FIG. 2, the transparent wall 13 includes a glass plate 14 and a reflectance changing film 15 attached to the surface of the glass plate 14 on the indoor side.

  In the interior 11 of the building, a screen wall 16 having the same size as the transparent wall 13 is installed in a direction parallel to the transparent wall 13 at a position away from the transparent wall 13. The screen wall 16 can be configured, for example, by pasting white wallpaper on a normal wall surface.

  A projector 17 is supported by being suspended from a ceiling 18 inside the building 11. The projector 17 projects an image 19 toward the screen wall 16. The image 19 projected on the screen wall 16 is reflected by the screen wall 16, reaches the transparent wall 13, and is reflected by the transparent wall 13, so that it is inside the building 11 and faces the transparent wall 13. Visible by the audience 20. The transparent wall 13 transmits light from the exterior 12 of the building at night to guide it to the interior 11 of the building, so that the spectator 20 can see the object 22 projected by the reflected image 21 from the transparent wall 13 in the exterior 12 of the building. You can experience the sensation of being in a space.

  Reference numeral 25 denotes a laser projector, which is installed in the interior 11 of the building in the illustrated example, and can project an image 27 on, for example, a slope 26 at the foot of the mountain in the exterior 12 of the building. Reference numeral 28 denotes a fountain nozzle, which jets water toward the optical path 29 from the laser projector 25 to diffusely reflect the laser light and obtain a special effect.

  As shown in FIG. 1, the glass plate 14 of the transparent wall 13 shown in FIG. 2 is commonly used for a window in a building or an opening larger than a general window. As for the optical characteristics, the visible light transmittance is about 80 to 90%, and the visible light reflectance is about 8%.

  When only such a glass plate 14 is applied to the image display device shown in FIG. 1, the visible light reflectance is only about 8% as described above, so that the outside of the building is dark at night. Even if it exists, the situation where the reflected image 21 from the transparent wall 13 is too dark for the audience 20 to occur may occur.

  Therefore, in the present invention, the reflectivity of the transparent wall 13 is improved by the reflectivity changing film 15 attached to the indoor surface of the glass plate 14 of the transparent wall 13. The type of the film 15 to be used has a required reflectance, that is, the brightness of the reflected image 21 is simply set to the glass plate 14 so that the audience 20 can visually recognize the reflected image 21 shown in FIG. Those having a reflectivity that can be increased as compared with the case of reflecting by the above can be arbitrarily used. In a commercially available film, for example, “Reflection (registered trademark)” manufactured by Sumitomo Riko Co., Ltd. can be suitably used assuming that the reflectance of visible light is about 15%. This “Refle Shine (registered trademark)” has a function of reflecting near infrared rays and far infrared rays. Therefore, the “Refle Shine (registered trademark)” originally has an inflow heat shielding effect on sunlight in summer and an outflow reduction effect on heating heat in winter. It is for making it show. Therefore, when this “Refle Shine (registered trademark)” is used, in addition to the increase in the reflectance of visible light that is the original purpose of the present invention, that is, the effect of changing, the inflow heat shielding effect on the sunlight in the summer described above In addition, it is possible to obtain a heating heat outflow reduction effect in winter.

  In addition to improving the reflectance of the transparent wall 13 as described above, the reflectance changing film 15 is intended to reduce the reflectance, for example, when the image projected from the projector 17 is too bright. An appropriate one can also be used.

  By using the reflectivity changing film 15 in this manner, the audience 20 shown in FIG. 1 can comfortably visually recognize the reflected image 21 having an appropriate brightness as compared with the case where the reflected image from only the glass plate is viewed. can do.

  As shown in FIG. 1, the image display apparatus of the present invention is used at night. For this reason, in the reflected image 21, the background other than the object 22 is black so that the object 22 is raised. It is desirable to be. However, the background 31 of the image 19 projected from the projector 17 toward the screen wall 16 has a certain level of brightness even if it is black. For this reason, as shown in FIG. 3B, compared to the portion 32 other than the image 19 on the screen wall 16, for example, the background 31 in the image 19 is brighter and the portion other than the image 19 in the image 19. If the brightness of the background 31 is different, the boundary 33 between the portion 32 other than the image 19 and the background 31 in the image 19 becomes clear. From the transparent wall 13, not only the image 19, but also reflected light from a portion 32 other than the image 19 on the screen wall 16 is generated, so that the audience 20 may notice the boundary 33 and feel uncomfortable.

  Therefore, in the present invention, it is preferable to use means for aligning the brightness of the portion 32 other than the image 19 on the screen wall 16 and the brightness of the portion of the background 31 in the image 19. Therefore, in the present invention, as shown in FIG. 4, an ND filter 34 is installed in front of the projection lens 30 of the projector 17. In practice, since the background 31 in the image 19 is brighter than the portion 32 other than the image 19 on the screen wall 16, it is sufficient to reduce the amount of light projected from the projector 17 by the ND filter 34. As a result, as shown in FIG. 3A, the brightness of the portion 32 other than the image 19 on the screen wall 16 and the brightness of the background 31 portion of the image 19 can be made uniform, making the boundary 33 inconspicuous. be able to. The ND filter 34 slightly reduces the brightness of the object image as well as the background 31. However, making the boundary 33 inconspicuous greatly contributes to improving the quality of the image.

  In a building whose wall surface is made of a glass plate, in order to reinforce the glass plate, rectangular plate-shaped vertical ribs in a direction perpendicular to the glass plate are often installed integrally with the glass plate. In the example shown in FIGS. 5 and 6, this type of rib 35 is provided as shown. The rib 35 can be comprised with the same material as the glass plate 14 of the transparent wall 13, for example.

  In the example shown in FIGS. 5 and 6, a projection device 36 different from the projector 17 is provided. The projection device 36 can project an image 37 at a position near the rib 35 on the transparent wall 13. Most of the light projected from the projection device 36 can be transmitted to the exterior 12 of the building through the transparent wall 13 to form an image at an appropriate location in the exterior 12. On the other hand, a part of the light projected from the projection device 36 is reflected by the film 15 of the transparent wall 13 and further reflected by the surface of the rib 35, and then a surface other than the transparent wall 13, for example, as shown in the figure. The image 39 is projected onto the wall surface 38 of the interior 11 of the building, whereby an image 39 is projected on the wall surface 38.

  As a result, an image can also be projected on a portion other than the transparent wall 13 in the interior 11 of the building. Moreover, the reinforcing ribs 35 that are indispensable for the installation of the transparent wall 13 can be used as means for projecting images. If a film 15 similar to the transparent wall 13 is attached to the surface of the rib 35 to improve the reflectance, a bright image 39 can be obtained.

  In the above description, the light reflected by the film 15 of the transparent wall 13 is further reflected by the surface of the rib 35. However, according to the present invention, the present invention is not limited to this, and it is also possible to adopt a configuration in which light reflected by the film 15 of the transparent wall 13 is reflected by another arbitrary reflecting surface and then projected onto the wall surface 38.

  As shown in FIG. 7, if the transparent wall 13 is configured to be horizontally long, an image of an object having a large size can be projected in the horizontal direction. In that case, one screen 40 is divided into a plurality of portions 41, 41,... Using a plurality of projectors 17, 17,. Can be projected. At this time, for example, as shown in FIG. 5A, it is possible to display special information only on a part 41 by using only a part of the projectors 17. In the example shown in the figure, a service is provided to the audience 20 such that the name of the audience 20 is projected.

  FIG. 8 shows the configuration of the apparatus for that purpose. A dedicated computer 45 for reproducing computer graphic images is provided, and an image signal from the computer 45 is sent to each projector 17, 17,... In the illustrated example, an image switching unit 47 is provided between the distributor 46 and the projector 17 in a specific projector. The image switching unit 47 can input the image signal from the distributor 46 and can input the signal from the computer 48 for displaying the spectator name, and switches only one of the signals and outputs it to the projector 17. It is configured as follows.

  In such a configuration, in a state where the image switcher 47 switches to output the signal from the distributor 46 to the projector 17, as shown in FIG. 7B, all the projectors 17, 17,. .. Are sent to the transparent wall 13 by image signals from the computer 45. Thereby, one image 49 is projected on the entire transparent wall 13.

  In a state in which the signal from the computer 48 is switched to be output to the projector 17 by the image switcher 47, as shown in FIG. 7A, an image 50 displaying the name of the spectator 20 on a part of the transparent wall 13 is displayed. Can be projected.

  The images from the other projectors 17, 17,... May be a plain background image as shown in FIG. Alternatively, a part of one large image as shown in FIG. 7B can be cut out, and an image 50 displaying the name of the audience 20 can be projected on the cut-out part.

  Switching by the image switching unit 47 can be performed manually or can be performed by software.

  FIG. 9 shows an outline of the overall configuration of the image display apparatus according to the embodiment of the present invention. As shown in the figure, an acoustic device 51 and a lighting device 52 are provided in the interior 11 of the building in addition to the equipment described so far. A fountain operating device 53, an outdoor lighting device 54, and a flame spray operating device 55 are installed on the exterior 12 of the building.

  The fountain operating device 53 is for operating the fountain nozzle 28.

  The outdoor lighting device 54 is for operating a searchlight 56, a light-up lighting 57 for trees, an LED lighting device 58, and the like by wireless control.

  The flame spray operating device 55 is for operating the torch 59, the flame sprayer 60, the sprayer 61 for spraying mist, and the like by wireless control.

  Each device shown in FIG. 9 is configured to be collectively controlled by the control device 62. As a result, various effects can be effectively implemented.

DESCRIPTION OF SYMBOLS 11 Interior of building 13 Transparent wall 14 Glass plate 15 Film 16 Screen wall 17 Projector 19 Image 20 Audience 22 Object 34 ND filter 35 Rib 38 Wall surface 46 Distributor 47 Image switcher

Claims (5)

A transparent wall that partitions the interior and exterior of the night and reflects part of the light from the interior of the room to the interior of the room,
A screen wall provided facing the transparent wall in the room;
A projector that projects an image toward the screen wall;
The light from the image projected and imaged from the projector toward the screen wall reaches the transparent wall and then is reflected by the transparent wall so that the object represented by the image exists in the outdoor space. An image display device that can be shown,
The said transparent wall has a glass plate and the film for reflectivity affixed on the surface of the indoor side of this glass plate, The image display apparatus characterized by the above-mentioned. A filter for inconspicuous a boundary between frame edge and the screen wall background image projected on the screen wall by causing toward the projector to the screen wall to reduce the brightness of the image projected, the projector of the projection lens The image display device according to claim 1, further comprising: A reflective surface protruding from the transparent wall to the indoor side;
A projection device that projects the image toward the transparent wall, reflects the projected image by the transparent wall, then reflects the image by a reflecting surface, and then projects the image on a surface other than the transparent wall;
The image display device according to claim 1, further comprising:   The image display device according to claim 3, wherein the reflecting surface is formed on a surface of a reinforcing rib attached to the transparent wall.   A plurality of projectors are configured to project one image, and some of the plurality of projectors can switch images so that other images can be projected instead of the original images. The image display device according to claim 1, wherein the image display device is provided.