JP2000321665A - Video display system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the reutilization and primary utilization of a video display medium and the easy transfer thereof by attachably and detachably sticking the video display medium to a member to be stuck, thereby constituting the video display system. SOLUTION: The video display system 1 consists of a projector 11 and the video display medium 13 stuck to the member 192 to be stuck and the video display medium 13 is so constituted as to display videos by the incident of video light emitted from the projector 11 thereon. The video display medium 13 is attachably and detachably stuck to the member 192 to be stuck. As a result, the video display medium 13 is stuck to the member 192 to be stuck at the time of use of the video display system 1 and may be stripped when the medium is not needed. Further, the stripped video display medium 13 may be stuck again to the member 192 to be stuck which exists in another place. Namely, the reutilization and primary reutilization of the video display medium 13 are possible and the easily transferable video display system 1 may be built.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display system for displaying various images such as characters, graphics, advertisements, advertisements, and the like using moving images and still images.

[0002]

2. Description of the Related Art Conventionally, an image display system comprising a projection device and an image display medium has been known. The image display medium used here is configured to display an image when image light emitted from the projection device enters. As this, there has been a case where a sheet-like screen is attached to a member to be attached and used. For this attachment, a strong adhesive or the like was often used.

[0003]

However, in the conventional video display system, no consideration has been given to relocating the video display system once constructed, or to temporarily constructing the video display system in accordance with an event or the like. . In other words, when the image display system once installed is moved, the image display medium is discarded after being peeled off from the member to be affixed, and reuse of this image display medium at the destination is not considered. In addition, an image display system was temporarily constructed and then removed, but it was not considered that the image display medium was peeled off from the member to be adhered at the time of removal and reused in another place.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to provide a video display system in which a video display medium can be reused and temporarily used and can be easily relocated.

[0005]

According to a first aspect of the present invention, there is provided an image display apparatus comprising a projection device and an image display medium attached to a member to be attached, wherein the image display medium receives image light emitted from the projection device. In the video display system configured to display a video according to the above, the video display medium is removably attached to the member to be pasted.

The most remarkable point in the present invention is that the image display medium is removably attached to the member to be attached. Thus, when using the video display system, the video display medium can be attached to the member to be affixed, and can be peeled off when it becomes unnecessary. Further, the peeled image display medium can be re-attached to a member to be adhered at another place. That is, it is possible to construct a video display system that can reuse and temporarily use the video display medium and can be easily relocated.

[0007] Further, since the video display medium is detachable, it is possible to perform a flexible operation such as removing the video display medium when it becomes unnecessary and reusing it at another occasion. This gives
In particular, it is possible to reduce the cost of the video display system when the video display medium is expensive. Also, the degree of freedom of operation of the video display system can be increased.

As described above, according to the present invention, it is possible to provide a video display system which can reuse and temporarily use a video display medium and can be easily relocated.

Various projectors, projectors, slide projectors and the like can be used as the projection device.
As the image display medium, besides a normal image display screen, a directional screen made of a diffraction grating or a light selection film can be used. In addition, it can be used without particularly selecting a type such as a thin film or a thick film.

By using the present invention, an image display medium can be replaced and used with a characteristic suitable for time and season, or can be used after being replaced at a more easy-to-see place, and an image display system including the image display medium can be used. The degree of freedom of the video display system, such as rental of the whole, can be increased.

Next, it is preferable that the image display medium is formed of a hologram screen. Once the video display medium attached to the member to be pasted can be peeled off and pasted to another location, the video display medium can be used before relocation without preparing a new video display medium when relocating the video display system. Can be used as it is. Since the hologram screen is expensive, by applying the present invention, the cost for constructing the image display system can be reduced.

The hologram screen has directivity, and can reproduce only the image light emitted from the projection device. For this reason, problems such as difficulty in viewing an image due to noise-like light incident from other directions are unlikely to occur.
Also, the hologram screen can be easily configured to be transparent so that the background can be seen through. Therefore, the hologram screen can be viewed as a new medium that can simultaneously see the image and the background by arranging the projection device diagonally above or below it. Can be used, and an unprecedented video display system can be constructed.

There are two types of hologram screens, a transmission type and a reflection type, both of which are screens in which a hologram element is formed alone or on a reinforcing base material. In addition, the reflection type is for observing an image on the same side as the incident direction of image light, and the transmission type is for observing an image from the side opposite to the incident direction. Further, the hologram screen may have a configuration in which the hologram element is sandwiched between various films such as PET and a polarizing film.

Next, as in the third aspect of the present invention, the adhesion strength of the image display medium to the member to be adhered is 5%.
It is preferably from 500 g / 50 mm. As a result, the image display medium can be attached and detached, and the adhesive strength between the adhered member and the image display medium is secured to the extent that it does not fall off or displace when applied to the adhered member perpendicular to the ground. can do. If the adhesive strength is less than 5 g / 50 mm, the image display medium may be peeled off from the member to be attached by its own weight. In addition, air bubbles and the like easily enter between the two, and the appearance of the image may be deteriorated.

If the weight is larger than 500 g / 50 mm, the image display medium cannot be peeled off from the member to be pasted, or a large stress is applied to the image display medium when peeling off.
It may be damaged. When the image display medium is damaged, streaks, breaks, and the like occur. These inconveniences may impair the quality of the video projected on the video display medium (see Embodiment 4). The adhesive strength is a value when the image display medium is peeled off from the member to be stuck at 180 mm in a direction of 300 mm / min.

Further, the adhesive strength is 800 × 600 mm.
This is an optimum value when a film-shaped video display medium of about 200 g in size is used. If the weight of the image display medium is different, the value suitable for the adhesive strength may be different.

Next, as in the fourth aspect of the present invention, an adhesive layer is provided on one or both surfaces of the image display medium, and the adhesive layer has viscosity and is colorless and transparent, colored and transparent. It is preferable to be any one of translucent. Thereby, the adhesive layer can be provided without impairing the image projected on the image display medium. Further, as the above-mentioned adhesive layer, various kinds of adhesives such as synthetic resin, synthetic rubber, silicone and polyurethane, or synthetic resin such as urethane can be used. The adhesive layer is used not only when the image display medium is attached to the member to be attached, but also when various protective materials for protecting the image display medium are provided on the image display medium. In particular, when it is provided on one surface of the image display medium, it is provided on the surface facing the member to be attached, and the image display medium can be attached by this adhesive layer.

Next, as in the invention described in claim 5, the member to be attached is preferably one of colorless and transparent, colored and transparent, and translucent. Thus, the image displayed on the image display medium can be attached to the member to be attached without damaging the image.

Next, it is preferable that the member to be stuck is made of glass. Glass is less likely to be scratched than other transparent members (such as acrylic), and is less likely to scratch the surface even after repeated attachment and detachment.
If the surface is scratched, it is difficult to attach the image display medium without trapping air bubbles, and the projected image also has a poor appearance.

Next, as in the invention according to claim 7, it is preferable that the surface of the member to be stuck on which the image display medium is stuck is subjected to a release treatment. This gives
When the image display medium is peeled off, the stress applied to the image display medium can be further reduced, so that damage to the image display medium can be further prevented. As the release treatment, a silicone-based, olefin-based, fluorine-based coating, or the like can be used.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment An image display system according to an embodiment of the present invention will be described.
This will be described with reference to FIGS. As shown in FIG. 1, a video display system 1 of the present embodiment includes a projection device 11 and a member 1 to be pasted.
The image display medium 13 is attached to the image display medium 92. The image display medium 13 is configured to display an image when the image light 151 emitted from the projection device 11 is incident. The image display medium 13 is detachably attached to the attachment member 192.

The details will be described below. As shown in FIG. 1, the video display system 1 of the present embodiment is used in a showroom 19. The image display medium 13 is a transmission hologram screen, and is attached to a window glass, which is an attachment member 192 provided between the floor 191 and the ceiling 193 of the showroom 19.

A projector is used as the projection device 11, and an image supply device (not shown) is connected to the projection device 11. In this example, a personal computer was used as an image supply device. In addition, laser disc (registered trademark),
It is also possible to use a reproducing apparatus for various video recording media such as a DVD (registered trademark), a video tape, and a video CD. Further, an image correction device or the like for performing various corrections such as trapezoidal distortion on the image supply device can be provided. In addition, the projection device 11 is mounted on the ceiling mount 193 from the ceiling surface 193.
It is suspended and fixed by 19.

The image display medium 13 of this embodiment has
As shown in (1), an adhesive layer 139 made of urethane is provided, and attachment to the member to be attached 192 is performed by the adhesive layer 139. In order to provide the adhesive layer 139 on the image display medium 13, as shown in FIG. 3, the adhesive layer 139 having the adhesive layer 138 between the two rollers 31 and 32 made of nitrile rubber and the image display medium 13 are introduced. Thus, the adhesive layer 139 and the image display medium 13 are pressure-bonded by these adhesive layers 138.

The image display medium 13 has a height of 600
mm × 800 mm wide and weighs 125 g. Also,
The thickness of the image display medium 13 is 100 μm, and the thickness of the adhesive layer is 100 μm.

Also, the member to be pasted 19 of the image display medium 13
2 can be carried out by wetting the surface of the member to be attached 192 with water and applying water. Alternatively, it can be stuck with a spatula or the like as it is and then dry-pasted.

The reproduction of a video in the video display system 1 of this embodiment will be described. A video signal is transmitted from a video supply device (not shown) to the projection device 11, and the video signal is emitted from the projection device 11 as video light 151. The image light 151 is incident on the image display medium 13 which is a transmission type hologram screen, forms an image on the surface thereof, diffracts, and is transmitted therethrough, so that the image light 151 is emitted from the side opposite to the side on which the image light 151 is incident. And emit. Therefore, the observer 8 standing in front of the image display medium 13 can observe the image.

Next, the performance of the video display system 1 of this embodiment was evaluated. The above-mentioned transmission hologram screen was pasted on a window glass of an actual store, and the image display system 1 according to FIG. 1 was constructed, and an image was displayed and used for one week. After that, the transmission hologram screen was peeled off from the window glass and attached to another window glass. At the same time, the video supply device 11 and the like were moved, and the video display system 1 was relocated. When peeling the transmission hologram screen, 30
Peeling was performed at a speed of 0 mm / min. When the peeling force at that time was measured, it was 30 g / 50 mm. The images were compared before and after the transmission hologram screen was relocated, but there was no particular difference, and no problem was observed in the images observed after the relocation.

As described above, according to the present embodiment, the image display medium 13 can be adhered to the member to be adhered 192 when the image display system 1 is used, and can be peeled off when unnecessary. Further, the peeled-down image display medium 13 can be re-attached to a member to be stuck at another place. That is, the video display medium 13 can be reused or temporarily used.
The image display system 1 that can be easily relocated can be constructed.

Further, since the image display medium 13 is detachable, it is possible to flexibly operate, for example, remove it when it becomes unnecessary and reuse it at another occasion. The image display medium of this example is a transmission type hologram screen and is expensive. Therefore, cost can be reduced. Further, the degree of freedom of operation of the video display system 1 can be increased.

As described above, according to the present embodiment, it is possible to provide a video display system in which the video display medium can be reused and temporarily used and can be easily relocated.

Embodiment 2 In this embodiment, as shown in FIG. 4, a showroom 18 in which a window glass is arranged facing two roads 21 and 22 is shown.
In this example, the video display system 1 is installed. This image display system 1 is provided to passers-by on roads 21 and 22.
It is installed for the purpose of promoting advertising images.

As shown in FIG. 4, the image display medium 131 composed of a transmission type hologram screen in the image display system 1 of this embodiment is attached to a window glass 181 which is a member to be attached. In addition, the projection device 11 that emits the image light 151 is suspended from the ceiling surface of the showroom 18 (not shown) by the ceiling mount 119, and
The projection device 11 is installed so as to be rotatable around a ceiling mount 119. Others are the same as the first embodiment.

The operation of the video display system 1 according to this embodiment will be described. The showroom 18 has a road 21 and a road 22
And the image display medium 131 is provided on the window glass 181, so that the pedestrians on the road 21 can observe the image shown here.

The road 21 has many traffic in the morning, and the road 22 has many traffic in the afternoon. Therefore, in the morning, the image display medium 131 is provided on the window glass 181, and in the afternoon, the image display medium 131 is peeled off.
Paste on. Then, the projection device 11 is rotated according to the position of the image display medium 13 to change the emission direction of the image light 151.

As described above, according to this embodiment, the position of the image display medium 131 is changed according to the time zone, and the image can be provided in a place where there are more passers-by. That is, it is possible to construct the video display system 1 that exhibits a high advertising effect.

The image display medium 131 can be replaced on the window glasses 181 and 182 in accordance with the time of sunshine. If the image display medium 131 is exposed to direct sunlight, the visibility of the image deteriorates. According to the image display system 1 according to the present example, the image display medium 131 is installed on the window glass 182 when the sunlight shines on the window glass 181, and at the time when the sunlight shines on the window glass 182, The image display medium 131 is replaced. This makes it possible to provide a video that is always easy to see.

Embodiment 3 In this embodiment, a reflection type hologram screen is used as an image display medium. As shown in FIG. 5, the image display system 1 of this example is disposed in a room 17,
The image display medium 13 includes an image display medium 13 attached to a window glass, which is an acrylic resin-based adhesive, and a projection device 11 fixed to a floor 171 by a mount 117. The window glass is coated with a silicone release agent. Other details are the same as in the first embodiment.

The image display system 1 of this embodiment is a home theater for ordinary households. The user uses the image display medium 13 by sticking it to a favorite place, but accidentally sticks it off the target position. Due to the release agent applied to the window glass, the image display medium 13 could be easily peeled off and reattached. When the force applied to the re-attachment was measured, it was 100 g / 50 mm. The peeling direction was 180 degrees and the peeling speed was 300 mm / min.
In addition, when the image on the image display medium 13 re-attached was observed, an image of the same level as that without re-attachment could be observed.

Embodiment 4 In this embodiment, an image display medium provided with an adhesive layer is 1 to 600 g / g.
It was stuck to the member to be stuck with an adhesive strength in the range of 50 mm, and detachment was repeated five times. At this time, the state of the trouble that occurred on the image display medium was measured. The results are shown in Table 1. The material of the adhesive layer was changed according to the adhesive strength. The image display medium is a hologram screen, and the adhered member is a window glass.

As the above-mentioned problems, "slipping" in which the hologram screen is displaced or falls off immediately after pasting, and "streak generation" in which a fine wrinkle-like trace is formed after the hologram screen is peeled off. In addition, there was "bending" in which bending occurred after the hologram screen was peeled off, and the number of occurrences of these defects was counted. In addition, five samples of each adhesive strength were prepared.

As can be seen from Table 1, the adhesive strength was 1 g /
At 50 mm, no streaking or breakage occurred in any of the five of the five, but the adhesive strength was weak, and the hologram screen was naturally displaced when left unattended.
It fell off ("fall off") and did not endure practical use.

When the adhesive strength was 500 g / 50 mm, streaks occurred on three of the five sheets. Although the appearance of streaks deteriorates the appearance of the image, the image display system can be rebuilt, since it can be re-applied so that no air bubbles enter the window glass. However, if the number of streaks increases, the video quality deteriorates. If the adhesive strength is further increased, the number of streaks will further increase, and it is considered that the image quality will not withstand actual use.

When the adhesive strength was 600 g / 50 mm, streaks occurred on five out of five sheets. Further, two of the five sheets were bent. If the broken hologram screen is re-attached to the window glass, it will be in a state of holding air bubbles. For this reason, a phenomenon that the displayed image is lost at a portion where bubbles are present occurs, and the image cannot be used in actual use.

As described above, when the adhesive strength of the hologram screen as the image display medium to the window glass as the member to be stuck is 5 to 500 g / 50 mm, the image quality can be maintained, and the image display medium can be detached. A possible video display system can be constructed.

[0046]

[Table 1]

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a configuration of a video display system according to a first embodiment.

FIG. 2 is an explanatory diagram showing a video display medium and an adhesive layer in the first embodiment.

FIG. 3 is an explanatory diagram when an adhesive layer is provided on a video display medium in the first embodiment.

FIG. 4 is an explanatory diagram showing a configuration of a video display system in which a video display medium is replaced and used in a second embodiment.

FIG. 5 is an explanatory diagram of a video display system in which a projection device is placed on the floor according to a third embodiment.

[Explanation of symbols]

 1. . . Video display system, 11. . . Projection device, 13. . . Video display medium, 151. . . Video light, 192. . . Affixed member,

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 13/04 H04N 13/04 F term (Reference) 2H021 AA05 BA21 2H049 CA07 CA11 5C058 BA23 BA35 EA31 EA32 EA33 EA38 5C061 AA06 AA23 AB24

Claims (7)

[Claims] 1. An image display medium comprising: a projection device; and an image display medium attached to a member to be attached, wherein the image display medium is configured to display an image when image light emitted from the projection device enters. In the video display system, the video display medium is removably attached to the member to be attached. 2. An image display system according to claim 1, wherein said image display medium comprises a hologram screen. 3. The image display medium according to claim 1, wherein the adhesive strength of the image display medium to the member to be attached is 5 to 500 g.
/ 50 mm. 4. The method according to claim 1, wherein:
An image display system, wherein an adhesive layer is provided on one or both surfaces of the image display medium, and the adhesive layer is viscous and is any one of colorless transparent, colored transparent, and translucent. 5. The method according to claim 1, wherein:
The image display system is characterized in that the member to be pasted is any one of colorless transparent, colored transparent and translucent. 6. The method according to claim 1, wherein:
The image display device, wherein the member to be attached is made of glass. 7. The method according to claim 1, wherein:
An image display system, characterized in that a surface of the member to be stuck on the side to be stuck to the image display medium has been subjected to release processing.