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JP2017126048

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DESCRIPTION JP2017126048
Abstract: [Problem] To provide a screen capable of projecting a clear image excellent in lightness
and contrast without lowering the degree of transmission even in the daytime outdoors or under
bright illumination, and to attract many people's attention To provide an image display system
suitable as an ambient display. SOLUTION: A screen comprising a substrate containing metalbased inorganic particles, a projection apparatus for projecting an image or a moving image on
the screen, and a vibration speaker having a function of generating sound with the screen as a
vibration body It has a screen comprising a substrate having a layer including a metallic
inorganic particle, a video display system characterized by the features, a projection device for
projecting an image or a moving image on the screen, and a function of generating sound with
the screen as a vibrating body An image display system characterized by having a vibration
speaker. [Selected figure] Figure 1
Video display system
[0001]
The present invention relates to a video display system for displaying a video on a screen.
[0002]
In the field of image display, image display devices typified by liquid crystal projectors are widely
used as means for obtaining large screen images easily at low cost, and many people, mainly
conferences and product launches, It is often used when giving a presentation while watching the
same screen.
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1
In addition, digital signage is used as an application for introducing products and promoting
stores.
[0003]
In recent years, a new display called ambient display has been proposed, which naturally displays
various information on all sides without being conscious of the display device. Ambient display is
a method of using daily life items such as walls, glasses, floors, desks, etc. as a display when
necessary, especially on transparent surfaces such as window glass, show windows, etc. It is
possible to provide new value by displaying information without compromising the nature.
[0004]
For example, WO 2012/114512 (patent document 1) changes the optical property and scatters
the optical state of the region including the portion on which the image light is projected,
modulated in time or space from the transparent state Discloses a display device having a screen
that can be switched to
[0005]
Furthermore, Japanese Patent Laid-Open No. 2015-79201 (Patent Document 2) includes a
screen which can switch over the whole or part of the screen between a reflection state for
reflecting a projected image and a transparent state for transmitting the projected image.
Disclosed a video display system.
[0006]
However, when the screens described in Patent Document 1 and Patent Document 2 are used in
a transparent state, the ability to reflect the projected image is low, so the image has low
lightness and contrast, and of course the daytime outdoors There is a problem that it is not
possible to observe a clear image under slightly bright illumination.
For this reason, development of a screen capable of projecting a clear image excellent in
lightness and contrast without reducing the transmittance is desired.
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[0007]
On the other hand, Japanese Patent Application Laid-Open No. 2012-68580 (Patent Document 3)
is a vibration speaker having a function of generating sound with a window glass, a glass case, a
panel, a table, a frame, etc. as a vibrating body, and a collector for collecting surrounding sounds.
A sound device is disclosed that includes a sound device and can exhibit a noise canceller effect
by inverting the phase of the surrounding sound and outputting the sound, and transmits the
sound only to a person in a specific area.
[0008]
However, even if it is attempted to apply the technology described in Patent Document 3 to a
system provided with a transmissive screen, as described above, there is no screen that can
display a clear image even under bright illumination. Environment that can be done is limited.
[0009]
JP-A-2015-212800 (Patent Document 4) comprises a resin layer, and inorganic particles in
which at least a part of the resin layer is contained in an aggregated state, and the primary
particles of the inorganic particles are 0.1 Having a median diameter of 50 nm and a maximum
particle size of 10 to 500 nm, the content of the inorganic particles is 0.015 to 1.2% by mass
with respect to the resin, and the inorganic particles are Discloses a transparent screen film
which is a metal-based particle.
Patent Document 4 describes that this transparent screen film can clearly project and display
product information, advertisements, and the like on transparent partitions and the like without
impairing the transmission visibility.
[0010]
The film for transparent screen described in Patent Document 4 is excellent in the visibility of the
image, so although it is suitable for use for the purpose of digital signage, the information which
can be provided only by the display of the image is limited.
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Therefore, there is a need for a video display system that can draw the attention of as many
people as possible and increase the efficiency of product introduction and store advertising.
[0011]
International Publication 2012/114512 JP 2015-79201 A JP 2012-68580 A JP 2015-212800
A
[0012]
Therefore, the object of the present invention is to provide a screen capable of projecting a clear
image excellent in lightness and contrast without reducing the degree of transmission even in the
daytime outdoors and under bright illumination, as well as for many people. An object of the
present invention is to provide a video display system that can be alerted and suitable as an
ambient display.
[0013]
In view of the above objects, as a result of intensive studies, the present inventors have found
that a substrate having metal-based inorganic particles capable of reflecting and scattering a
projected image with high efficiency has high transparency, brightness and contrast. The
inventors have found that the present invention can be used as a screen capable of projecting an
excellent clear image.
[0014]
That is, the image display system of the present invention is a vibration having a screen made of
a substrate containing metal-based inorganic particles, a projection device for projecting an
image or a moving image on the screen, and a function of generating sound using the screen as a
vibrator. Characterized by having a speaker
[0015]
Another image display system according to the present invention comprises a screen comprising
a substrate having a layer containing metal-based inorganic particles, a projection device for
projecting an image or a moving image on the screen, and sound as the vibrating body. And a
vibration speaker having a function.
[0016]
The substrate may be plate glass or curved glass, or may be a transparent or opaque polymer
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resin plate.
[0017]
When the substrate is plate glass or curved glass, the layer containing the metal-based inorganic
particles is preferably made of glass or a polymer resin containing metal-based inorganic
particles.
[0018]
When the substrate is a polymer resin plate, the layer containing the metal-based inorganic
particles is preferably made of a polymer resin containing metal-based inorganic particles.
[0019]
The layer containing the metal-based inorganic particles is preferably provided so as to be
removable.
[0020]
The screen preferably has a hard coat layer.
[0021]
The screen preferably has a touch sensor function.
[0022]
The image display system of the present invention preferably further includes a sound collection
device for collecting surrounding sound, and a phase inverter for inverting the phase of the
sound.
[0023]
The video display system of the present invention preferably further has a communication
function.
[0024]
In the video display system of the present invention, the screen is preferably a window of a train,
a car, a ship or an airplane.
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[0025]
In the video display system of the present invention, preferably, the screen is a window of an
open / close door provided on a safety fence of a bullet train, a subway or a train.
[0026]
In the image display system of the present invention, preferably, the screen is a show window, a
signboard, a panel, a guide display board, a guide display board provided in a case or a door.
[0027]
In the video display system of the present invention, preferably, the screen is a table or a top of a
counter.
[0028]
The image display system of the present invention is provided with a screen capable of clearly
projecting an image projected with high transparency and high brightness by using metal-based
inorganic particles, and a vibration body of the screen. Because it has a vibrating speaker with
the function of generating sound, it can provide more information to people and can bring much
attention of people.
Therefore, the image display system of the present invention can be used for trains, cars, ships,
airplanes, window glass, bullet trains, subways, doors of train entrances and doors of safety
fences, windows of show doors, billboards, panels, information display boards , Glass case,
guidance display board provided at the entrance, and transparent top board of the table and the
counter, in any environment regardless of day and night, high-performance video display and
excellent sound and music etc. Output can be realized.
[0029]
It is a schematic diagram which shows the 1st aspect of the video display system of this
invention.
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It is a schematic diagram which shows the 2nd aspect of the video display system of this
invention.
It is a schematic cross section which shows an example of the screen which consists of a board |
substrate containing metal type inorganic particle.
It is a schematic cross section showing an example of a screen which has a substrate and a layer
containing metallic inorganic particles.
It is a schematic cross section which shows another example of the screen which has a board |
substrate and the layer containing metal type inorganic particle.
It is a schematic cross section which shows the example which provided the hard-coat layer in
the screen which has a screen which consists of a board | substrate containing metal type
inorganic particle, and a board | substrate and a layer containing metal type inorganic particle.
[0030]
(1) Overall Configuration As shown in FIG. 1, according to a first aspect of the video display
system of the present invention, a screen 1, a projection apparatus 2 for projecting video or
video on the screen, and sound using the screen as a vibrating body And the screen 1 is made of
a substrate containing a metal-based inorganic particle or a substrate having a layer containing a
metal-based inorganic particle.
Metal-based inorganic particles have a high refractive index compared to glass and polymer
resins, and thus function as good light scatterers in these media, and exhibit high scattering
effect by Mie scattering.
Therefore, it is possible to project a clear image with high brightness and contrast even with a
transmissive screen using a transparent substrate.
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[0031]
According to a second aspect of the image display system of the present invention, as shown in
FIG. 2, a screen 1, a projection apparatus 2 for projecting an image or a moving image on the
screen, and a function of generating sound with the screen as a vibrator. The vibration speaker 3,
the sound collecting device 4 for collecting the surrounding sound, and the phase inverter (not
shown) for inverting the phase of the sound, and the screen 1 contains metal-based inorganic
particles. It comprises a substrate or a substrate having a layer containing metallic inorganic
particles.
[0032]
The video display system of the present invention may further have a communication function.
By having the communication function, it is possible to project an image and a moving image
distributed through a LAN line or the like, transmit various information input by the user to the
server, and count it.
[0033]
(2) Screen As shown in FIG. 3, the screen used in the image display system of the present
invention may be the screen 10 comprising the substrate 11 containing the metal-based
inorganic particles 100, or contains metal-based inorganic particles. It may be a screen consisting
of a substrate having a layer.
As shown in FIG. 4, the screen comprising a substrate having a layer containing metallic
inorganic particles is shown in FIG. 5 or a screen 20 provided with a layer 22 containing metallic
inorganic particles 100 on a substrate 21 or as shown in FIG. Preferably, the screen 30 is such
that the layer 32 containing the metal-based inorganic particles 100 is sandwiched between the
substrate 31 and the substrate 31.
The layer 22 containing the metal-based inorganic particles 100 and the layer 32 containing the
metal-based inorganic particles 100 may be provided to be in direct contact with the substrate
21 and the substrate 31, respectively, or an adhesive layer or other layers (FIG. It may be
provided via (not shown).
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[0034]
As described above, since the metal inorganic particles act as a light scatterer exhibiting a high
scattering effect to project an image, the metal inorganic particles are disposed at a higher
concentration and a smaller thickness. Is preferred.
In the case of a screen comprising a substrate having a layer containing metal-based inorganic
particles, the thickness of the layer containing metal-based inorganic particles can be adjusted
regardless of the thickness of the substrate, so a screen having a thin layer with high
concentration It can be easily designed.
Also, in the case of a screen comprising a substrate containing metal-based inorganic particles, it
is preferable to have more metal-based inorganic particles in the substrate, rather than being
uniformly present in the substrate. It is preferable that the particles be present in such a state
that part of the particles pop out.
[0035]
In the image display system of the present invention, as shown in FIGS. 6A and 6B, screens 40
and 50 having hard coat layers 43 and 53 on their surfaces may be used.
Further, the hard coat layer may contain metal-based inorganic particles, or a layer containing
metal-based inorganic particles may be used as a hard coat layer.
[0036]
The screen used in the image display system of the present invention is more effective when
configured as a screen using a transparent substrate, but may of course be configured as a
screen using an opaque substrate.
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In the case of a screen using a transparent substrate, it may be used as a reflective screen
(observed from the projection side) or as a transmissive screen (observed from the opposite side
of the projected side).
As the opaque substrate, crystalline polymer, foamable polymer, colored glass or polymer,
opaque polymer resin such as ground glass or glass can be used.
In addition to these general substrates, for example, using a wall of a room, a wall of a building, a
body of a car, a train, an airplane or the like as a substrate, a layer containing metallic inorganic
particles may be provided to form a screen. It is possible.
[0037]
(I) Substrate The substrate containing metal-based inorganic particles is preferably made of a
plate of glass or polymer resin.
These plate-like substrates may be planar or curved.
As glass, oxide glass such as silicate glass, phosphate glass and borate glass is practical, and in
particular, silicate glass, alkali silicate glass, soda lime glass, potassium lime glass, lead glass,
barium Glass, silicate glass such as borosilicate glass is preferred.
[0038]
As the polymer resin, those excellent in visible light transmittance are preferable, and polyester
resins, acrylic resins, acrylic urethane resins, polyester acrylate resins, polyurethane acrylate
resins, epoxy acrylate resins, urethane resins, epoxy resins are preferable. Resin, polycarbonate
resin, cellulose resin, acetal resin, vinyl resin, polyethylene resin, polystyrene resin,
polypropylene resin, polyamide resin, polyimide resin, melamine resin, phenol resin, silicone
resin A thermoplastic resin such as a fluorine-based resin, a thermosetting resin, an ionizing
radiation curable resin, or the like can be used.
[0039]
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As the metal-based inorganic particles, those obtained by atomizing metal oxides or substances
other than metal oxides are used.
Examples of metal oxides include zirconium oxide, titanium oxide, zinc oxide, aluminum oxide,
and cerium oxide. Examples of metal oxides other than metal oxides include barium titanate and
barium sulfate. In particular, it is preferable to use zirconium oxide, titanium oxide particles,
cerium oxide particles, barium titanate and barium sulfate particles from the viewpoints of the
scattering property of projection light, the cohesion of particles, and the production cost. These
metal-based inorganic particles may be used alone or in combination of two or more.
[0040]
For the metal-based inorganic particles, commercially available particles may be used. For
example, as the zirconium oxide particles, SZR-W, SZR-CW, SZR-M, and SZR-K etc. (all, Sakai
Chemical Industry Co., Ltd.) (Trade names) can be suitably used.
[0041]
The metal-based inorganic particles may be present alone in the glass or polymer resin, but it is
preferable that at least a part be present in a state of being aggregated.
The median diameter of the metal-based inorganic particles is preferably 0.01 to 1 μm when the
primary particles are present alone or in the aggregated state. When the median diameter of the
metal-based inorganic particles is equal to or greater than the wavelength of visible light, forward
scattering S f (scattering that occurs on the opposite side of the screen with respect to incident
light) becomes extremely strong, and when it is configured as a transmissive screen, it transmits
light. The coming light will blur. Therefore, the median diameter of the metal-based inorganic
particles is 1 μm or less, preferably 400 nm or less, and more preferably 200 nm or less. When
the median diameter of the metal-based inorganic particles is smaller than 0.01 μm,
backscattering S b (scattering that occurs on the front side of the screen with respect to incident
light) hardly occurs, and the scattering reflectance of the transmission screen decreases. The
median diameter of the metal-based inorganic particles is preferably 30 nm or more.
[0042]
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The content of the metal-based inorganic particles in the glass or polymer resin is 0.01 to 1.5%
by mass, preferably 0.02 to 1.2% by mass, more preferably 0 based on the glass or polymer
resin. It is from 0.5 to 1.0% by mass, most preferably from 0.1 to 0.8% by mass. If the content of
the metal-based inorganic particles in the glass or polymer resin is within the above range, a
sufficient scattering effect of the projection light can be obtained without impairing the
transmission visibility, so that product information, advertisement, etc. Can be projected clearly.
[0043]
(Ii) As a substrate having a layer containing metal-based inorganic particles and metal-based
inorganic particles, the same ones as the substrate containing the metal-based inorganic particles
can be used, and therefore the description thereof is omitted here.
[0044]
The layer containing metal-based inorganic particles is preferably formed of a polymer resin that
can be used for the substrate.
When both the substrate and the layer containing the metal-based inorganic particles are
composed of a polymer resin, those resins may be the same or different. The thickness of the
layer containing the metal-based inorganic particles is not particularly limited, but is preferably
0.5 to 1000 μm, more preferably 1 to 500 μm, and most preferably 2 to 200 μm. If it is less
than 0.5 μm, a sufficient reflection image can not be obtained, and if it exceeds 1000 μm, the
image is blurred.
[0045]
The content of the metal-based inorganic particles in the polymer resin is 0.01 to 1.5% by mass,
preferably 0.02 to 1.2% by mass, and more preferably 0.05 to 1% with respect to the polymer
resin. The content is 0.1% by mass, more preferably 0.1 to 0.8% by mass. If the content of the
metal-based inorganic particles in the polymer resin is within the above range, a sufficient
scattering effect of projection light can be obtained without loss of transmission visibility when
used as a film for a screen, so that it is transparent. Even in the case of a transmissive screen
using a substrate, it is possible to project a clear image with high brightness and contrast.
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[0046]
The layer containing metal-based inorganic particles may be formed by coating a resin solution
containing metal-based inorganic particles on a substrate, or a sheet made of a resin containing
metal-based inorganic particles prepared in advance is used as a substrate It may be pasted on
top. Also, in order to improve the adhesion, after the intermediate layer is provided on the
substrate, a layer containing metallic inorganic particles may be provided. When forming a layer
containing metallic inorganic particles by coating, it is preferable to use a heat- or UV-curable
resin. The coating method may, for example, be a bar coating method, a dip coating method, a
flow coating method, a spray coating method, a spin coating method or a roller coating method.
[0047]
The layer containing metal-based inorganic particles may be removable. For example, a sheet
glass, which is usually used as a show window, is temporarily provided with a layer containing
metal-based inorganic particles by a method such as spray coating, for example, for a certain
event to form a transparent screen. It is possible to configure the image display system and wipe
the layer containing the metal-based inorganic particles provided on the show window with a
solvent or the like after the end of the event.
[0048]
(Iii) Hard Coat Layer The hard coat layer may be further provided on the screen. The hard coat
layer is formed by coating a hard coat agent on the layer containing the metal-based inorganic
particles. In order to improve adhesion, a hard coating agent may be applied after the
intermediate layer is provided on the layer containing the metal-based inorganic particles.
Examples of the coating method include bar coating method, dip coating method, flow coating
method, spray coating method, spin coating method, roller coating method and the like.
[0049]
(Iv) The touch sensor screen may further have a touch sensor function. By having the touch
sensor function, it is possible not only to provide information unilaterally, but also to select
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information at the will of the user, and further, it is possible to input information from the user.
[0050]
(3) Projection Device The video display system of the present invention has a projection device 2
for projecting an image, a moving image and the like. The projection device 2 processes data
stored in media such as Blu-ray Disc (BD), DVD or the like or data distributed by a LAN circuit in
a video output unit, and projects the image and moving image on a screen. The electric signal
sent from the video output unit to the projection device 2 may be transmitted by wire or may be
transmitted by a wireless device.
[0051]
(4) Vibration Speaker The image display system of the present invention further includes a
vibration speaker having a function of generating sound with the screen as a vibrating body. The
vibration speaker 3 is provided with a vibration element formed of an electromagnetic element, a
piezoelectric element or the like that converts an electric signal output from the sound output
unit into vibration and vibrates the vibration body to generate a sound. It is an apparatus which
uses a screen as a speaker by attaching to a show window, a signboard, a panel, etc.). The electric
signal sent from the voice output unit to the vibration speaker 3 may be transmitted by wire or
may be transmitted by a wireless device.
[0052]
(5) Sound Collection Device and Phase Inverter The video display system of the present invention
preferably further comprises a sound collection device 4 comprising a sound collection
microphone for collecting surrounding sound. The sound collected by the sound collection
microphone is input to the system control unit via the audio input unit, and the phase inverter
equipped with the function to reverse the phase of the sound included in the system control unit
inverts the phase of the collected sound By generating the negative phase noise and outputting it
from the vibration speaker 3 via the audio output unit, it is possible to cancel the ambient sound
with the negative phase noise. That is, by exerting the effect of the noise canceller, the viewer can
listen to the music, the sound, the sound effect and the like from the vibration speaker more
clearly. A signal input from the sound collection device 4 to the voice input unit may be
transmitted by wire or may be transmitted by a wireless device.
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[0053]
In this way, by canceling out the ambient sound with negative phase noise, music, voice, and so
on only in a limited area in front of the screen (window glass, show window, signboard, panel,
etc.) on which the vibration speaker 3 is installed. A sound effect (sound masking) having
directivity such that sound effects can be heard well and can not be heard outside the area can
be produced.
[0054]
For example, by installing the vibration speaker 3 in a glass case of a display of a shop or a
museum or a show window of a department store, only the people who stand in front of the glass
case for display or the show window The guidance can be transmitted at a volume that people
can talk to.
[0055]
DESCRIPTION OF SYMBOLS 1 ... Screen 2 ... Projection device 3 ... Vibration speaker 4 ... Sound
collection device 100 ... Metal type inorganic particle 11, 21, 31, 41, 51 ... Substrate 22, 32, 32,
52 ... Layers containing metallic inorganic particles 10, 20, 30, 40, 50 ... Screens 43, 53 ... Hard
coat layer
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