JP2024149303A - Exhibition device and exhibition method - Google Patents

Abstract

To provide an exhibition device and exhibition method, which enable provision of floating impression to images through a simple method.SOLUTION: According to an embodiment of the present invention, an exhibition device 10 for exhibiting at least an image is provided, the exhibition device comprising antireflection films 11, 12, screens 13, 14 for displaying an image, and a projector 15 for projecting the image to the screens 13, 14, where the antireflection films 11, 12 are disposed in an image projection direction, and the screens 13, 14 are provided on portions of the antireflection films 11, 12, respectively.SELECTED DRAWING: Figure 1

Description

The present invention relates to an exhibition device and an exhibition method.

Traditionally, video has been exhibited in showrooms and other venues to promote sales. In recent years, there has been discussion about exhibiting videos that appear to float in the air in order to increase the eye-catching effect and customer attraction, thereby promoting sales.

One known method for giving an image a floating feeling is to display the image on a transparent screen (see, for example, Patent Document 1).

JP 2011-128633 A

However, the images displayed on the transparent screen did not create the illusion that the images were floating in the air. In other words, the images did not actually give the impression of floating in the air.

The present invention has been made to solve the above problems. In other words, the objective is to provide an exhibition device and an exhibition method that can give a floating feeling to an image in a simple manner.

The present invention includes the following inventions.
[1] An exhibition device for exhibiting at least an image, comprising at least one anti-reflection film, at least one screen for displaying the image, and a projector for projecting the image onto the screen, wherein the anti-reflection film is disposed in a projection direction of the image, and the screen is provided on a part of the anti-reflection film.

[2] The display device described in [1] above, in which there are multiple anti-reflection films and multiple screens, the screen is provided on a portion of each anti-reflection film, and each anti-reflection film is positioned in the projection direction of the image.

[3] The display device described in [2] above, in which the screen has a different shape or size for each anti-reflection film.

[4] An exhibition device as described in any one of [1] to [3] above, in which the image projected from the projector is displayed on at least a portion of the screen.

[5] The display device described in any one of [1] to [4] above, further comprising a support member for supporting the anti-reflection film.

[6] The display device described in any one of [1] to [5] above, wherein the anti-reflection film is transparent or translucent.

[7] An exhibition device according to any one of [1] to [6] above, wherein the screen is a reflective screen or a transmissive screen.

[8] The display device described in [7] above, in which the projector has a function for inverting the image horizontally.

[9] An exhibition device as described in any one of [1] to [8] above, wherein the screen is translucent, white, or black.

[10] An exhibition device as described in any one of [1] to [8] above, in which the screen is white, black, or an intermediate color between white and black.

[11] An exhibition device as described in any one of [1] to [10] above, in which the projector has a function of applying gradation processing to the contours of the image.

[12] A method for displaying at least one image, comprising: providing at least one screen on a portion of at least one anti-reflection film; projecting the image onto the screen from a projector; and displaying the image on at least a portion of the screen.

The present invention provides an exhibition device and exhibition method that can give a floating feeling to images in a simple manner.

FIG. 1 is a perspective view of a display device according to an embodiment. FIG. 2 is a front view of the anti-reflection film and the screen according to the embodiment. FIG. 3 is a cross-sectional view of the anti-reflection film and the screen according to the embodiment. FIG. 4 is a cross-sectional view of another anti-reflection film and a screen according to the embodiment. FIG. 5 is a cross-sectional view of an anti-reflection film according to an embodiment and another screen. FIG. 6A is a front view of another screen according to the embodiment, and FIG. 6B is a cross-sectional view taken along line II of FIG. 6A. FIG. 7 is a perspective view showing another support member according to the embodiment. FIG. 8 is a perspective view showing another support member according to the embodiment. FIG. 9 is a perspective view showing another display apparatus according to the embodiment. FIG. 10 is a perspective view showing another display apparatus according to the embodiment. FIG. 11 is a schematic diagram showing a state in which the display device according to the embodiment is in use.

Hereinafter, an exhibition device and an exhibition method according to an embodiment of the present invention will be described with reference to the drawings. In this specification, the terms "film" and "sheet" are not distinguished from each other based only on the difference in name. Therefore, for example, "film" is used in a sense including a member also called a sheet. FIG. 1 is a perspective view of an exhibition device according to this embodiment, FIG. 2 is a front view of an anti-reflection film and a screen according to this embodiment, FIG. 3 is a cross-sectional view of an anti-reflection film and a screen according to this embodiment, and FIG. 4 and FIG. 5 are cross-sectional views of another anti-reflection film and a screen according to this embodiment. FIG. 6A is a front view of another screen according to this embodiment, FIG. 6B is a cross-sectional view of I-I of FIG. 6A, FIG. 7 and FIG. 8 are perspective views showing another support member according to this embodiment, FIG. 9 and FIG. 10 are perspective views showing another exhibition device according to the embodiment, and FIG. 11 is a schematic diagram showing a state in which the exhibition device according to this embodiment is used.

<<<Exhibition equipment>>>
The display device 10 shown in FIG. 1 is for displaying at least an image, and includes two anti-reflection films 11 and 12, two screens 13 and 14 for displaying the image, and a display unit 16 for displaying the image on the screens 13 and 14. The projector 15 projects light, and supports 16 and 17 support anti-reflection films 11 and 12. As long as at least one anti-reflection film 11 or 12 and at least one screen 13 or 14 are provided, two anti-reflection films 11 and 12 and two screens 13 and 14 can be provided. The display device 10 does not necessarily have to include the support members 16 and 17.

Screens 13, 14 are provided on a portion of each of the anti-reflection films 11, 12. Specifically, screen 13 is provided on a portion of the anti-reflection film 11, and screen 14 is provided on a portion of the anti-reflection film 12. The screen 13 shown in FIG. 1 is attached to the anti-reflection film 11 via an adhesive layer 18 as shown in FIG. 3, and the screen 14 is attached to the anti-reflection film 12 via an adhesive layer (not shown).

<<Anti-reflection film>>
The anti-reflection films 11 and 12 have a function of preventing reflection of external light. The anti-reflection films 11 and 12 are arranged to be aligned in the projection direction of an image projected from a projector 15. The anti-reflection film 11 shown in Fig. 1 is closer to the projector 15 than the anti-reflection film 12. That is, the anti-reflection film 11 is located on the front side, and the anti-reflection film 12 is located on the rear side. However, as described below, in the case where the projector 15 is a transmissive screen and the projector 15 is located on the rear side of the anti-reflection film 12, the anti-reflection film 12 may be closer to the projector 15 than the anti-reflection film 11.

From the viewpoint of suppressing external light reflection and giving the image a floating feeling, the visible light reflectance of the anti-reflection films 11 and 12 is preferably 2% or less, and more preferably 1% or less. When an observer views the anti-reflection films 11 and 12 from the front surface 11A side of the anti-reflection film 11, the reflection of external light and objects, such as the observer's own figure, is suppressed, so that the observer is less likely to recognize the presence of the anti-reflection films 11 and 12. The visible light reflectance can be measured in accordance with JIS R3106:2019 by the following method. First, light is irradiated onto the surface of the anti-reflection films 11 and 12 facing the projector 15 at an incident angle of 5°. Then, the visible light reflectance is measured based on the specular reflection of the incident light. In this specification, the visible light reflectance is calculated based on the spectrum data obtained every 10 nm from the wavelengths of 380 nm to 780 nm by irradiating light including wavelengths of 380 nm to 780 nm in accordance with JIS R3106:2019.

From the viewpoint of giving the image a sense of floating in the air, the anti-reflection films 11 and 12 are preferably transparent or semi-transparent, and more preferably transparent. In this specification, "transparent" means that the visible light transmittance is 60% or more. It is preferable that the visible light transmittance (JIS R3106:2019) of the anti-reflection films 11 and 12 is 80% or more, 90% or more, 92% or more, or 95% or more. The visible light transmittance of the anti-reflection films 11 and 12 is measured as follows. First, a sample having a size of 30 mm x 30 mm is cut out from the anti-reflection films 11 and 12. Next, light containing wavelengths from 380 nm to 780 nm is irradiated onto the surface of the sample so that the incident angle is 5°. Then, a spectrophotometer (manufactured by JASCO Corporation, "V-7100") is used to measure the transmission spectrum of light transmitted through the anti-reflection film at an angle of 5°, i.e., the same angle as the incident angle. The light transmission spectrum is measured at all wavelengths from 380 nm to 780 nm, which differ in 10 nm increments. The visible light transmittance is then calculated based on the measured transmission spectrum. In terms of anti-reflective film, translucency includes those that are colorless, white, or black.

The shape of the anti-reflection films 11 and 12 is not particularly limited, but examples include rectangular shapes such as a rectangle or a square, a circle, an ellipse, and the like. As shown in Figures 1 and 2, both of the anti-reflection films 11 and 12 are rectangular.

The thickness of the anti-reflection films 11 and 12 is not particularly limited, but is preferably 500 μm or less, for example. If the thickness of the anti-reflection films 11 and 12 is 500 μm or less, the transparency of the anti-reflection films 11 and 12 can be improved. The upper limit of the thickness of the anti-reflection films 11 and 12 may be 300 μm or less, or 250 μm or less. The lower limit of the thickness of the anti-reflection films 11 and 12 may be 60 μm or more from the viewpoint of obtaining stiffness and strength that can maintain the shape of the anti-reflection films 11 and 12. The thickness of the anti-reflection films 11 and 12 and the thickness of each layer described later can be calculated from the average value of the thickness of 20 points measured from a cross-sectional image taken using, for example, a scanning electron microscope (SEM), a transmission electron microscope (TEM), or a scanning transmission electron microscope (STEM). When the film thickness to be measured is on the order of μm, it is preferable to use SEM, and when it is on the order of nm, it is preferable to use TEM or STEM. In the case of SEM, the acceleration voltage is preferably 1 kV to 10 kV and the magnification is preferably 1000 to 7000 times, and in the case of TEM or STEM, the acceleration voltage is preferably 10 kV to 30 kV and the magnification is preferably 50,000 to 300,000 times.

The anti-reflection films 11 and 12 are not particularly limited as long as they have the function of preventing reflection of external light. For example, the anti-reflection film 11 is formed in this order on both sides of the core material film 111 with an anti-reflection layer 113, a substrate 114, and an anti-reflection layer 113, with an adhesive layer 112 interposed therebetween, as shown in FIG. 3. The anti-reflection film 11 may be formed in such a manner that the anti-reflection layer 113, the substrate 114, and an anti-reflection layer 113 are formed only on one side of the core material film 111 with an adhesive layer 112 interposed therebetween, as shown in FIG. 4. The anti-reflection film 11 does not have to include the core material film 111 and the adhesive layer 112. The anti-reflection film 12 has the same configuration as the anti-reflection film 11.

<Core film>
The core film 111 is intended to provide stiffness to the anti-reflection film 11. The thickness of the core film 111 is preferably 5 μm or more and 130 μm or less. If the thickness of the core film 111 is within this range, stiffness can be provided to the anti-reflection film 11. From the viewpoints of durability and handling properties, the thickness of the core film 111 may be 10 μm or more and 100 μm or less.

The core material film 111 can be appropriately selected from plastic films, glass, etc. Examples of plastic films include those made of various synthetic resins. Examples of synthetic resins include cellulose resins such as triacetyl cellulose resin (TAC), diacetyl cellulose, acetate butyrate cellulose, and cellophane; polyester resins such as polyethylene terephthalate resin (PET), polybutylene terephthalate resin, polyethylene naphthalate-isophthalate copolymer resin, and polyester-based thermoplastic elastomer; polyolefin resins such as low-density polyethylene resin (including linear low-density polyethylene resin), medium-density polyethylene resin, high-density polyethylene resin, ethylene-α-olefin copolymer, polypropylene resin, polymethylpentene resin, polybutene resin, ethylene-propylene copolymer, propylene-butene copolymer, olefin-based thermoplastic elastomer, and mixtures thereof; acrylic resins such as poly(methyl (meth)acrylate resin, poly(ethyl (meth)acrylate resin, and poly(butyl (meth)acrylate resin); polyamide resins such as nylon 6 or nylon 66; polystyrene resin; polycarbonate resin; polyarylate resin; or polyimide resin. The core material film can be used alone or as a mixture of two or more of the above plastic films.

Among plastic films and glass, polyethylene terephthalate resin (PET), acrylic resin, polycarbonate resin, glass, etc. are preferred from the viewpoint of providing stiffness to the anti-reflective film. Acrylic resin is also preferred from the viewpoint of providing strength to the anti-reflective film.

<Adhesive layer>
The adhesive layer 112 is for bonding the core film 111 to the anti-reflection layer 113, etc. The adhesive layer 112 is not particularly limited, but may be, for example, an optically transparent adhesive layer (OCA layer).

<Substrate>
The thickness of the base material 114 is not particularly limited and may be appropriately selected depending on the application. It is usually 5 μm to 130 μm, and preferably 10 μm to 100 μm in consideration of durability, handleability, and the like.

The substrate 114 may be a film similar to that of the core film 111, but among these, from the standpoint of flexibility, toughness, transparency, etc., cellulose resin and polyester resin are more preferred, and triacetyl cellulose resin (TAC) and polyethylene terephthalate resin (PET) are even more preferred.

<Anti-reflection layer>
The antireflection layer 113 includes a high refractive index layer 113A and a low refractive index layer 113B. The antireflection layer 113 is not particularly limited as long as it has an antireflection function, and may be, for example, a laminated structure of a medium refractive index layer, a high refractive index layer, and a low refractive index layer, or may be a single layer structure of a low refractive index layer. The high refractive index layer and the low refractive index layer have the role of imparting the antireflection function by the optical interference function of the multilayer thin film.

(High Refractive Index Layer)
The high refractive index layer 113A can be formed, for example, from a high refractive index layer coating liquid containing a curable resin composition and high refractive index particles. It is preferable that the high refractive index layer 113A has a high refractive index from the viewpoint of making the anti-reflection film have an ultra-low reflectance, but a large amount of high refractive index particles is required to increase the refractive index, which leads to aggregation of the high refractive index particles and causes whitening. For this reason, the refractive index is preferably 1.55 or more and 1.85 or less, and more preferably 1.56 or more and 1.70 or less.

The thickness of the high refractive index layer 113A is preferably 200 nm or less, and more preferably 50 nm or more and 180 nm or less. In addition, when the high refractive index layer has a two-layer structure described below, it is preferable that the total thickness of the two layers satisfies the above value.

In addition, the high refractive index layer 113A may be formed from multiple layers that satisfy the above refractive index range, but from the perspective of cost-effectiveness, two layers or less are preferable, and a single layer is more preferable.

Examples of high refractive index particles include antimony pentoxide (1.79), zinc oxide (1.90), titanium oxide (2.3-2.7), cerium oxide (1.95), tin-doped indium oxide (1.95-2.00), antimony-doped tin oxide (1.75-1.85), yttrium oxide (1.87) and zirconium oxide (2.10). Note that the numbers in parentheses indicate the refractive index of the material of each particle.

Among these high refractive index particles, those with a refractive index of more than 2.0 are preferred from the viewpoint of achieving the above-mentioned suitable refractive index with the addition of a small amount. Furthermore, conductive high refractive index particles such as antimony pentoxide, tin-doped indium oxide (ITO), and antimony-doped tin oxide (ATO) have free electrons whose plasma frequency is in the near-infrared region, and due to the plasma oscillation of these free electrons, some light in the visible light region is absorbed or reflected, making it difficult to suppress the color. For this reason, it is preferable that the high refractive index particles are non-conductive.

For these reasons, titanium oxide and zirconium oxide are preferred among the high refractive index particles exemplified above, and zirconium oxide is the most suitable from the viewpoint of high durability and stability such as light resistance. If it is desired to impart antistatic properties to the anti-reflection film, it is preferable to form the high refractive index layer into a two-layer structure as described below, with one of the layers containing conductive high refractive index particles.

The average particle size of the primary particles of the high refractive index particles is preferably 5 nm or more and 200 nm or less, more preferably 5 nm or more and 100 nm or less, and even more preferably 10 nm or more and 80 nm or less. The average particle size of the primary particles of the high refractive index particles and the low refractive index particles described later can be calculated by the following operations (1) to (3).
(1) A surface image of the particles themselves, or a dispersion of the particles is coated on a substrate and dried, is taken using an SEM, TEM, or STEM.
(2) Randomly extract 10 particles from the surface image, measure the major and minor axes of each particle, and calculate the particle diameter of each particle from the average of the major and minor axes. Note that the major axis is the longest axis on the screen, and the minor axis is the distance between the two points where a line segment perpendicular to the midpoint of the line segment constituting the major axis intersects with the particle.
(3) The same operation was performed five times by imaging another screen of the same sample, and the value obtained from the number average of the particle diameters of a total of 50 particles was taken as the average particle diameter. When calculating the average particle diameter of particles, if the average particle diameter to be calculated is on the order of μm, it is preferable to use SEM, and if the average particle diameter to be calculated is on the order of nm, it is preferable to use TEM or STEM. In the case of SEM, the acceleration voltage is preferably 1 to 10 kV and the magnification is preferably 1000 to 7000 times, and in the case of TEM or STEM, the acceleration voltage is preferably 10 to 30 kV and the magnification is preferably 50,000 to 300,000 times.

From the viewpoint of achieving a balance between increasing the refractive index, suppressing color tone, and suppressing whitening, the content of the high refractive index particles is preferably 30 to 400 parts by mass, more preferably 50 to 200 parts by mass, and even more preferably 80 to 150 parts by mass, relative to 100 parts by mass of the curable resin composition.

The high refractive index layer 113A is preferably dispersion stabilized to suppress excessive aggregation of the high refractive index particles. For example, a means for dispersion stabilization is to add another high refractive index particle having a smaller surface charge than the base high refractive index particle. This allows the base high refractive index particles to gather around the other high refractive index particles in an appropriate amount, suppressing excessive aggregation of the base high refractive index particles. Other means for dispersion stabilization are to use surface-treated high refractive index particles or to add a dispersant to the high refractive index layer coating liquid.

The curable resin composition that forms the high refractive index layer 113A is preferably an ionizing radiation curable resin composition. In order to obtain the above-mentioned refractive index without adding an excessive amount of high refractive index particles, it is preferable to use a curable resin composition with a high refractive index. The refractive index of the curable resin composition is preferably about 1.54 to 1.70.

The high refractive index layer 113A may also be a two-layer structure with a high refractive index layer (A) located on the substrate 114 side and a high refractive index layer (B) located on the low refractive index layer side. In this case, it is preferable to make the refractive index of the high refractive index layer (B) higher than that of the high refractive index layer (A). By configuring the high refractive index layer in this way, the refractive index difference with the low refractive index layer can be increased, the reflectance can be reduced, and the refractive index difference between the high refractive index layer and the substrate can be reduced, suppressing the occurrence of interference fringes.

When the high refractive index layer has a two-layer structure, it is preferable that the refractive index of the high refractive index layer (A) is 1.55 or more and 1.70 or less, and the refractive index of the high refractive index layer (B) is 1.60 or more and 1.85 or less.

Furthermore, in the above two-layer structure, it is preferable that one of the high refractive index layers (A) and (B) contains conductive high refractive index particles and the other contains non-conductive high refractive index particles, and that the thickness of the layer containing the conductive high refractive index particles is < the thickness of the layer containing the non-conductive high refractive index particles. This structure makes it possible to impart antistatic properties while suppressing the amount of conductive high refractive index particles added, which can cause coloring. In addition, the conductive high refractive index particles are preferable in that they can be networked within the layer to impart antistatic properties with a small amount of addition, thereby suppressing coloring and whitening.

The high refractive index layer 113A can be formed by preparing a coating solution for forming the high refractive index layer using high refractive index particles, a curable resin composition, additives such as an ultraviolet absorber and a leveling agent that are blended as necessary, and a diluting solvent, applying the coating solution onto the hard coat layer by a conventionally known coating method, drying, and curing by irradiation with ionizing radiation as necessary.

(Low Refractive Index Layer)
The low refractive index layer 113B is a layer having a refractive index lower than that of the high refractive index layer 113A. The low refractive index layer 113B preferably has a refractive index of 1.26 or more and 1.36 or less in order to provide the antireflection film with an ultra-low reflectance. The lower limit of the refractive index of the low refractive index layer 34 is more preferably 1.28 or more or 1.30 or more, and the upper limit is more preferably 1.34 or less or 1.32 or less.

The lower the refractive index of the low refractive index layer 113B, the lower the refractive index of the anti-reflection film 11 can be without increasing the refractive index of the high refractive index layer 113A that much. On the other hand, if the refractive index of the low refractive index layer 113B is made too low, the strength of the low refractive index layer 113B tends to decrease. For this reason, by setting the refractive index of the low refractive index layer 113B within the above range, the amount of high refractive index particles added to the high refractive index layer 113A can be reduced while maintaining the strength of the low refractive index layer 2B, which is advantageous in that it leads to suppression of color and whitening.

The low refractive index layer 113B may be formed from multiple layers that satisfy the above refractive index range, but from the perspective of cost-effectiveness, two layers or less are preferred, and a single layer is more preferred.

The thickness of the low refractive index layer 113B is preferably 80 nm or more and 120 nm or less. The lower limit of the thickness of the low refractive index layer 113B is more preferably 85 nm or more or 90 nm or more, and the upper limit is more preferably 110 nm or less or 105 nm or less.

The methods for forming the low refractive index layer 113B can be broadly divided into wet methods and dry methods. Wet methods include a method of forming the layer by a sol-gel method using metal alkoxides or the like, a method of forming the layer by coating a resin with a low refractive index such as fluororesin, and a method of forming the layer by coating a coating liquid for forming a low refractive index layer in which low refractive index particles are contained in a resin composition. Dry methods include a method of selecting particles having a desired refractive index from the low refractive index particles described below and forming the layer by physical vapor deposition or chemical vapor deposition.

The wet method is excellent in terms of production efficiency, and in the present invention, among the wet methods, it is preferable to form the low refractive index layer using a coating liquid in which low refractive index particles are contained in a resin composition.

Low refractive index particles are preferably used to lower the refractive index, i.e., to improve anti-reflection properties. They can be inorganic, such as silica or magnesium fluoride, or organic, without any restrictions. However, from the viewpoint of further improving anti-reflection properties and ensuring good surface hardness, particles that themselves have a void structure are preferably used.

Particles that have a structure with voids themselves have fine voids inside, and because they are filled with a gas such as air with a refractive index of 1.0, their own refractive index is low. Examples of such void-containing particles include inorganic or organic porous particles and hollow particles, such as porous silica, hollow silica particles, and porous polymer particles and hollow polymer particles using acrylic resin. Examples of inorganic particles include silica particles with voids prepared using the technology disclosed in JP-A-2001-233611, and examples of organic particles include hollow polymer particles prepared using the technology disclosed in JP-A-2002-80503. The refractive index of the above-mentioned void-containing silica or porous silica is in the range of 1.18 to 1.44, which is lower than that of general silica particles, which have a refractive index of about 1.45, and is therefore preferable from the viewpoint of achieving a low refractive index layer.

The hollow silica particles are particles that have the function of lowering the refractive index of the low refractive index layer while maintaining the coating strength of the layer. The hollow silica particles used in the present invention are silica particles with a structure having internal cavities. The hollow silica particles are silica particles whose refractive index decreases in inverse proportion to the occupancy rate of the internal cavities compared to the inherent refractive index of the silica particles (refractive index n = approximately 1.45). Therefore, the refractive index of the hollow silica particles as a whole is 1.18 or more and 1.44 or less.

The hollow silica particles are not particularly limited, but examples thereof include particles that have an outer shell and are porous or hollow inside, such as silica particles prepared using the techniques disclosed in JP-A-6-330606, JP-A-7-013137, JP-A-7-133105, and JP-A-2001-233611.

The average particle diameter of the primary particles of the low refractive index particles is preferably 5 nm to 200 nm, more preferably 5 nm to 100 nm, and even more preferably 10 nm to 80 nm. If the average particle diameter of the primary particles is within the above range, the transparency of the low refractive index layer is not impaired and a good particle dispersion state is obtained. In particular, hollow particles are used as low refractive index particles, and the average particle diameter of the hollow particles is 70 nm to 80 nm, which is preferable in that it can increase the porosity and reduce the refractive index while maintaining an outer shell thickness that does not cause a lack of strength, and also has an excellent balance with the ideal low refractive index layer thickness (about 100 nm) for reducing reflectance.

The low refractive index particles are preferably surface-treated. As the surface treatment of the low refractive index particles, surface treatment using a silane coupling agent is more preferable, and among these, surface treatment using a silane coupling agent having a (meth)acryloyl group is preferable. By subjecting the low refractive index particles to a surface treatment, the affinity with the binder resin described below is improved, the particles are uniformly dispersed, and the particles are less likely to aggregate with each other, so that the decrease in the transparency of the low refractive index layer due to the increase in particle size caused by aggregation, the applicability of the composition for forming the low refractive index layer, and the decrease in the coating strength of the composition are suppressed.

In addition, when the silane coupling agent has a (meth)acryloyl group, the silane coupling agent has ionizing radiation curing properties and therefore easily reacts with the binder resin described below, so that the low refractive index particles are well fixed to the binder resin in the coating film of the composition for forming the low refractive index layer. That is, the low refractive index particles function as a crosslinking agent in the binder resin. This provides a tightening effect for the entire coating film, and makes it possible to impart excellent surface hardness to the low refractive index layer while retaining the inherent flexibility of the binder resin. Therefore, the low refractive index layer deforms by making use of its own flexibility, and has the ability to absorb and restore external impacts, so that the occurrence of scratches is suppressed, resulting in a high surface hardness with excellent scratch resistance.

Examples of silane coupling agents that are preferably used in the surface treatment of low refractive index particles include 3-(meth)acryloxypropyltrimethoxysilane, 3-(meth)acryloxypropyltriethoxysilane, 3-(meth)acryloxypropylmethyldimethoxysilane, 3-(meth)acryloxypropylmethyldiethoxysilane, 2-(meth)acryloxypropyltrimethoxysilane, and 2-(meth)acryloxypropyltriethoxysilane.

The content of the low refractive index particles in the low refractive index layer 113B is preferably 10 parts by weight to 250 parts by weight, more preferably 50 parts by weight to 200 parts by weight, and even more preferably 100 parts by weight to 180 parts by weight, per 100 parts by weight of the resin in the low refractive index layer 113B. If the content of the low refractive index particles is within the above range, good anti-reflection properties and surface hardness can be obtained.

In addition, the proportion of hollow particles and/or porous particles in the total low refractive index particles contained in the low refractive index layer 113B is preferably 70% by mass or more, more preferably 80% by mass or more, and even more preferably 80% by mass or more and 95% by mass or less.

The resin composition contained in the coating liquid for forming the low refractive index layer is, first, a curable resin composition. As the curable resin composition, an ionizing radiation curable resin composition is preferable. In addition, as the resin composition, a fluorine-containing polymer or a fluorine monomer that itself exhibits a low refractive index is also preferably used. A fluorine-containing polymer is a polymer of a polymerizable compound that contains at least a fluorine atom in the molecule, and is preferable in that it can impart antifouling properties and slip properties. The fluorine-containing polymer is preferably one that has a reactive group in the molecule and functions as a curable resin composition, and more preferably one that has an ionizing radiation curable reactive group and functions as an ionizing radiation curable resin composition.

The low refractive index layer 113B can be formed, for example, by preparing a coating solution for forming the low refractive index layer using low refractive index particles, a resin composition, additives such as an ultraviolet absorber and a leveling agent that are blended as necessary, and a diluting solvent, and then coating the coating solution on the high refractive index layer using a conventionally known coating method, drying, and curing by irradiation with ionizing radiation as necessary.

<<Screen>>
The screen 13 shown in Fig. 1 is provided on the front surface 11A of the anti-reflection film 11 located on the projector 15 side, and the screen 14 is provided on the front surface 12A of the anti-reflection film 12 located on the projector 15 side. The screen 13 may be provided on the back surface 11B, which is the surface opposite to the front surface 11A of the anti-reflection film 11, as shown in Fig. 5, and the screen 14 may also be provided on the back surface, which is the surface opposite to the front surface 12A of the anti-reflection film 12. As described later, in order to give the image a floating feeling, it is preferable that the image projection surface of the screen is a matte surface, but when the back surface (adhesive layer side) of the screen is a matte surface compared to the front surface of the screen, it is preferable to provide the screen on the back surface of the anti-reflection film and use the back surface of the screen as the image projection surface.

Screens 13 and 14 may be any material that can be used as a projector screen, such as synthetic paper or a resin sheet with an anti-reflection surface. Also, general projector screens can be used as screens 13 and 14.

The screens 13 and 14 shown in FIG. 1 are reflective screens. By using the screens 13 and 14 as reflective screens, it is possible to provide an inexpensive and simpler exhibition device. The screens 13 and 14 may also be transmissive screens. When the screens 13 and 14 are transmissive screens, it is possible to place the projector 15 on the rear side of the anti-reflection film 12, which allows for a simple spatial design. In addition, since the space on the front side 11A of the anti-reflection film 11 can be secured, there are fewer restrictions on the layout of product shelves, POPs, etc. The reflective screen may be semi-transparent, and the transmissive screen includes not only transparent screens but also semi-transparent screens. The transmissive screen is not particularly limited, but for example, Glasheen (registered trademark) F manufactured by AGC Inc. can be used. When the screens 13 and 14 are reflective screens, they may have not only a reflective component of the image but also a transmitted component of the image, and when the screens 13 and 14 are transmissive screens, they may have not only a transmitted component of the image but also a reflective component of the image.

Screen 13 is attached to anti-reflective film 11 via adhesive layer 18, and screen 14 is attached to anti-reflective film 12 via an adhesive layer (not shown). It is preferable that screens 13, 14 are replaceable so that the color tone and size of screens 13, 14 can be changed to suit the exhibition environment. There is no particular limitation on such replaceable screens 13, 14, but electrostatic adhesion sheets (for example, Yupo Electrostatic Adhesive (registered trademark) WESC165 manufactured by Yupo Corporation) can be used.

The screen 13 may be a transparent sheet 131 on which an image projection layer 132 is formed, as shown in Figs. 6A and 6B. For example, an electrostatic adsorption sheet may be used as the transparent sheet 131. The image projection layer 132 may be formed, for example, by an inkjet method using an ionizing radiation curable transparent ink or white ink. From the viewpoint of giving the image a more floating feeling, it is preferable that the transparent ink is a matte ink. The screen 14 may also be a transparent sheet on which an image projection layer is formed, like the screen 13.

It is preferable that the image projection layer 132 has an opening 132A. By having the image projection layer 132 have the opening 132A, the transparency provided by the transparent sheet 131 can be maintained, so that the image can be given a more floating feeling, and the image can be displayed on the screen 13. It is preferable that the aperture ratio of the image projection layer 132 is 25% or more and 75% or less. From the viewpoint of easily forming the opening 132A in the image projection layer 132, the opening 132A in the image projection layer 132 may be formed by forming the constituent material of the image projection layer 132 into a dot shape as shown in Figures 6A and 6B.

If the image projection surface of the screen is flat, there is a risk that glare will occur on the image projection surface of the screen, reducing the sense of floating in the air. For this reason, from the perspective of suppressing the reduction in the sense of floating in the air, it is preferable that the image projection surfaces 13A, 14A of the screens 13, 14 are formed with fine irregularities. By having such fine irregularities, the image projection surfaces 150A, 60A can be made into a matte surface, thereby suppressing glare.

The color tone of the screens 13, 14 is not particularly limited, and may be, for example, white, black, or an intermediate color between white and black. The screens 13, 14 may use different colors depending on the exhibition environment. For example, if the exhibition is mainly held in a bright environment such as daytime, a bright screen is preferable, so a screen with a light color tone such as translucent or white is preferable. If the exhibition is mainly held in a dark environment such as night, a dark screen is preferable, so a screen with a dark color tone such as black is preferable. The color tone of the screen may be other than white, black, or an intermediate color between white and black. Each color tone can be applied appropriately from a light state to a dark state.

The shape and size of the screens 13 and 14 may be different for each of the anti-reflection films 11 and 12 or for each of the screens 13 and 14. For example, the screen 13 shown in FIG. 1 is circular, and the screen 14 is rectangular. The shapes of the screens 13 and 14 are not particularly limited, and examples include rectangular shapes such as rectangles and squares, circles, and ellipses. The size of the screens 13 and 14 is not particularly limited as long as it does not cover the entire front or back of the anti-reflection films 11 and 12, and can be made to a desired size as appropriate.

As shown in FIG. 2, when screens 13 and 14 of exhibition device 10 are viewed from the projection direction, screens 13 and 14 partially overlap. When projector 15 projects continuous images onto screens 13 and 14, a three-dimensional effect is created in the images, and the image on screen 13 located on the projector 15 side can be made to stand out more, resulting in an eye-catching effect. Note that when screens 13 and 14 of exhibition device 10 are viewed from the projection direction, screens 13 and 14 do not necessarily have to partially overlap.

<<Projector>>
The projector 15 is for projecting images onto the screens 13 and 14. Two or more images may be projected from the projector 15. Also, there may be a plurality of projectors 15.

If the image projected from projector 15 extends beyond the screens 13 and 14, it may reduce the sense of floating in the air, so it is preferable that the contours of the image projected from projector 15 onto screens 13 and 14 are adjusted to fit the contours of screens 13 and 14.

When there is a wall behind the anti-reflection film, if the image projected from the projector extends beyond the screen, the extended image may be reflected on the wall, reducing the sense of floating in the air. In contrast, when projector 15 has a function for applying gradation processing to the contours of the image and projects an image with a gradation-processed contour from projector 15, even if there is a wall behind anti-reflection film 12 and the image projected from projector 15 extends beyond screens 13 and 14, the reflection on the wall becomes less noticeable, thereby preventing a reduction in the sense of floating in the air. Note that a projector with a function for applying gradation processing to the contours of an image is equipped with an image processing unit, and the image processing unit can apply gradation processing to the contours of the image.

<<Support member>>
The supporting member 16 is for supporting the anti-reflection film 11, and the supporting member 17 is for supporting the anti-reflection film 12. The supporting member 16 is made of four rod-shaped bodies joined to the supporting member 17, and the tips of the rod-shaped parts hold the anti-reflection film 11. The supporting member 17 is a frame with legs that holds the outer periphery of the anti-reflection film 12.

The support members 16, 17 are not particularly limited as long as they can support the anti-reflection films 11, 12. For example, in addition to a frame or rod-shaped body, they may be a stand 19 that supports the anti-reflection films 11, 12 from below as shown in FIG. 7, or a hanging member 20 that supports the anti-reflection films 11, 12 by suspending them as shown in FIG. 8.

In order to prevent a decrease in the sense of floating in the air of the image, it is preferable that the support members 16 and 17 are transparent or translucent, and it is more preferable that they are transparent.

<<<<Other exhibits>>>
The display device 10 shown in Fig. 1 has two anti-reflection films 11 and 12 arranged therein, but a single anti-reflection film 11 may be arranged as the anti-reflection film as in the display device 30 shown in Fig. 9. In the display device 30, a support member 16 that supports the anti-reflection film 11 is a frame with legs that holds the outer periphery of the anti-reflection film 11.

The screen 13 of the exhibition device 30 is a reflective screen and the projector 15 is arranged on the front 11A side of the anti-reflection film 11, but the reflective screen may be replaced with a transmissive screen and the projector 15 may be arranged on the back 11B side of the anti-reflection film 11. In such a case, if an image made for a reflective screen is to be used as an image, the image will be displayed in a left-right inverted state, so that if an image including characters or a logo mark is displayed as an image, when an observer observes the image from the front side (front 11A side) of the exhibition device, the characters or patterns will be displayed in reverse and will not be displayed correctly. For this reason, in such a case, it is preferable to use a projector 15 having a function of inverting the image left-right to invert the image displayed on the screen 13 left-right. This makes it possible to correctly display an image made for a reflective screen as an image, not only when the screen 13 is a reflective screen, but also when the reflective screen is replaced with a transmissive screen and the projector 15 is arranged on the back 11B side of the anti-reflection film 11. In this specification, "left and right direction" refers to the left and right direction when an observer views the exhibition device 10 from the front of the exhibition device 10. In addition, a projector that has a function for inverting an image left and right includes an image control unit, and the image can be inverted left and right by the image control unit.

In the exhibition device 10 shown in FIG. 1, no exhibit is fixed to the anti-reflection film 11, but as in the exhibition device 40 shown in FIG. 10, an exhibit 21 may be fixed to at least one of the anti-reflection films 11, 12, preferably to the anti-reflection film 11 on the projector 15 side, for sales promotion purposes. By fixing the exhibit 21 to at least one of the anti-reflection films 11, 12, it is possible to give not only the image but also the exhibit a floating feeling in the air. The exhibit 21 may be either a two-dimensional exhibit or a three-dimensional exhibit. The exhibit 21 is not particularly limited, and examples thereof include signs, products, and POP (point of purchase) advertisements.

<<Applications>>
The display devices 10, 30, 40 can be used in, but are not limited to, in-store sales promotions (e.g., beverages, cosmetics, sporting goods, clothing, etc.), showrooms (cars, etc.), event venues, art galleries, and museums.

<<<Exhibition method>>>
In order to exhibit an image in the exhibition device 10, 40, the screen 13, 14 is provided on a part of the anti-reflection film 11, 12, and an image is projected from the projector 15 onto the screen 13, 14. As shown in FIG. 11, the display device 10, 40 displays an image on at least a part of the screens 13, 14. The display device 10, 40 includes two screens 13, 14, and displays an image on at least a part of each of the screens 13, 14. Display the video.

To display an image in the exhibition device 30, a screen 13 is attached to a portion of the anti-reflection film 11, and the image is projected from the projector 15 onto the screen 13, so that the image is displayed on at least a portion of the screen 13.

In addition, as described above, if a projector having the function of flipping an image horizontally is used as projector 15, an image that is flipped horizontally can be displayed on screen 13.

According to this embodiment, in the exhibition devices 10, 40, the screens 13, 14 are provided on parts of the anti-reflection films 11, 12, so that the anti-reflection films 11, 12 can suppress the reflection of external light. This gives the sensation or impression that there is nothing around the screens 13, 14, so that the image displayed on the screens 13, 14 can be given a floating feeling. Furthermore, the floating feeling can be given to such images by the extremely simple method of providing the screens 13, 14 on parts of the anti-reflection films 11, 12. This makes it possible to give the image a floating feeling in the air in a simple manner.

In addition, in the exhibition device 30, a screen 13 is provided on part of the anti-reflection film 11, so that the anti-reflection film 11 can suppress reflection of external light. This gives the sensation or impression that there is nothing around the screen 13, so that the image displayed on the screen 13 can be given a floating feeling. Furthermore, the floating feeling can be given to such an image by the extremely simple method of providing a screen 13 on part of the anti-reflection film 11. This makes it possible to give the image a floating feeling in the air in a simple manner.

10, 30, 40... Display device 11, 12... Anti-reflection film 11A, 12A... Front surface 13, 14... Screen 15... Projector 16, 17... Support member

Claims (12)

An exhibition device for exhibiting at least a video,
At least one anti-reflective film;
at least one screen for displaying said image;
a projector that projects the image onto the screen,
The anti-reflection film is disposed in a projection direction of the image,
A display device, wherein the screen is provided on a portion of the anti-reflection film. The display device according to claim 1, wherein there are multiple anti-reflection films and multiple screens, the screen is provided on a portion of each anti-reflection film, and each anti-reflection film is arranged in the projection direction of the image. The display device of claim 2, wherein the screen has a different shape or size for each anti-reflection film. The exhibition device of claim 1, wherein the image projected from the projector is displayed on at least a portion of the screen. The display device according to claim 1, further comprising a support member that supports the anti-reflection film. The display device of claim 1, wherein the anti-reflective film is transparent or translucent. The display device according to claim 1, wherein the screen is a reflective screen or a transmissive screen. The display device according to claim 7, wherein the projector has a function of inverting the image horizontally. The display device of claim 1, wherein the screen is semi-transparent. The display device of claim 1, wherein the screen is white, black, or an intermediate color between white and black. The display device according to claim 1, wherein the projector has a function for applying gradation processing to the contours of the image. An exhibition method for exhibiting at least a video,
The display method includes providing at least one screen on a portion of at least one anti-reflection film, and projecting the image onto the screen from a projector to display the image on at least a portion of the screen.

Images