JP2011180321A - Light transmission type connected roll screen - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a large-sized light transmission type screen which does not require a large-scale device. <P>SOLUTION: In the large-sized screen in which a plurality of light transmission type roll screens are arranged in parallel, the ends of adjacent screens are arranged overlapping by 1 to 10% of roll screen width. If the haze value of one screen is defined as (a), and the haze value when two screens overlapping is defined as (b), the average value (c) of the haze, at a portion where the screens overlap each other, is set so as to satisfy expression (1): a-(b-a)×0.6< c <a+(b-a)×0.6. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an increase in the size of a light transmission screen that is formed by connecting a plurality of roll screens in parallel. More specifically, the present invention is installed in contact with the inside of a glass surface facing a road, such as a store or a showroom, and is used for advertisements and publicity to passers-by, etc. Is related to the technology of screens that become window displays.

  In the past, large and retractable projection screens have a wide screen film or fabric folded (folding screen type), wound around a roll core (roll screen type), or suspended under the floor. And used it when needed. However, wide screens are expensive to manufacture and expensive. In addition, the folding screen type requires a large device to expand and store a wide screen. The roll screen type has a problem that if the width of the screen is too large, the winding core (shaft) bends and the screen is wrinkled (Patent Document 1).

  In this application, the screen is installed in contact with the inside of the glass surface of a store, a showroom, etc., and is projected from the indoors behind the screen when viewed by an observer, so the screen used is a light transmissive screen. . In the case of the transmission type screen, unlike the case of the reflection type screen, it is impossible to make a wide width by overlapping and joining fabrics having a normal width (80 to 130 cm) as they are. This is because, in the case of a transmissive screen, unlike the case of a reflective screen, an image of transmitted light is seen, so that the overlapping portion of the screen has a high haze and the transmitted light image cannot be seen well.

  In addition, in a transmission type connecting screen, if the end portions of the adjacent screens are merely abutted without overlapping, light leaks from the gap, and depending on the observation position, it is dazzling and uncomfortable for the observer. Therefore, in the transmission type connecting screen, the overlapping portion of the end portions is absolutely necessary.

JP 2000-330208 A

  The present invention is to solve the above-mentioned problems of the prior art. That is, it is to propose a large light transmissive screen that does not require a large-scale device. In this case, when a transmission screen having a normal width is arranged in parallel to form a large screen, the haze of the overlapping portion should not be changed greatly.

  The inventors of the present invention have proposed a large screen in which a plurality of roll screens are partially overlapped and arranged in parallel, and a large screen that can be fully appreciated will be realized if the haze rise of the overlapping portion is suppressed to some extent. I found it.

That is, the light transmission type connected roll screen of the present invention is a large screen in which a plurality of light transmission type roll screens are arranged in parallel, and the end portions of the adjacent screens are arranged to overlap each other by 1 to 10% of the width of each roll screen. When the haze value of one sheet is a and the haze value when two sheets of the screen are overlapped is b, the average value c of the haze of the portion where the screens overlap satisfies the following formula (1). It is.
a− (ba) × 0.6 <c <a + (ba) × 0.6 (1)

  Further, the present invention is characterized in that the overlapping portion has a rack-and-pinion rack cross-sectional shape.

  Furthermore, the present invention is characterized in that a transparent adhesive tape is bonded to the mat surface of the overlapping portion of the light transmission type screen.

  In the present invention, the haze is a haze value according to JIS K7136: 2000.

  According to the present invention, since the connecting roll screen is a connecting type, no wrinkle is generated even if the screen is wide. Since the large screen is not an integral type, there is no excessive cost for manufacturing.

  Further, even when the end portions of the light transmission type screen are overlapped and arranged in parallel, the image of the overlapping portion can be seen clearly. This is realized by making the haze of the overlapping portion not significantly different from other portions. Specifically, by setting the overlapping portion to a rack and pinion rack cross-sectional shape, the light transmittance of the overlapping portion is not significantly reduced, and the haze value of the portion can be suppressed from increasing.

  As another method, by sticking a transparent adhesive tape to the mat surface of the overlapping portion of the light transmission type screen, the haze value of the overlapping portion can be prevented from changing significantly from other portions.

  Therefore, according to the present invention, even if a large-scale apparatus is not used, the roll film can be hung in parallel with the glass surface of a store, a showroom, etc. A good window display can be realized.

Schematic view of one embodiment of the screen device of the present invention as seen from inside a store Schematic view of one embodiment of the screen device of the present invention as viewed from above. Enlarged view of each screen overlap part with rack and pinion rack cross-sectional shape Schematic diagram of one embodiment of screen overlap (rack and pinion rack cross section) Schematic illustration of another embodiment of screen overlap. Schematic drawing the screen of the present invention rolled up and stored in the upper part

The light transmissive screen of the present invention is a large screen in which a plurality of roll screens are arranged in parallel, and the end portions of the adjacent screens are placed so as to overlap each other by 1 to 10% of the width of each roll screen. Where a is the haze value when two of the screens are overlapped, and b is the average haze value c of the portion where the screens overlap, the following formula (1) is satisfied.
a− (ba) × 0.6 <c <a + (ba) × 0.6 (1)
Hereinafter, an embodiment of a light transmission type connecting screen of the present invention will be described with reference to FIGS.

FIG. 1 is a schematic view of a state in which three roll screens 2 are connected and arranged inside the large glass surface of a store and each screen 1 is pulled out in a state where the present connected roll screen is used.
FIG. 2 is a top view of the arrangement. The adjacent roll screens 2 are arranged so as to overlap the end width e. In this way, the light from the projector does not leak from the gap between the screens, so that the light does not directly enter the observer's eyes. In addition, the roll-out screens 2 that are adjacent to each other so that the surfaces of the screens 1 are close to each other are arranged at different feeding positions. In this way, the size of the images on the adjacent screens does not deviate greatly.
FIG. 3 shows a first specific example of the present invention, in which adjacent roll ends have a rack-and-pinion rack cross-sectional shape, and overlapping portions face each other.
FIG. 4 shows a state in which the end portions of both screens in FIG. 3 overlap each other, and the hatched portion indicates the overlapping portion.
FIG. 5 is a diagram in which transparent tape is pasted on a portion where adjacent roll ends overlap in another specific example of the present invention, and that portion is overlapped.
FIG. 6 shows a state in which the screen is not used, and each screen is wound on the roll shaft of the winding device.

  In these drawings, the screen 1 is a light transmission type screen. This screen is made of a translucent plastic film, and at least one surface of a transparent film made of polyester, polypropylene, polyethylene, polycarbonate, polystyrene, polyvinyl chloride, nylon, acrylic, or the like is preferably used. The mat is preferably formed by coating a mat layer on the film surface. However, the film surface may be made translucent by physical treatment such as sandblasting or etching. Also, a plastic film in which a matting agent is kneaded into the above material can be used.

  Those having a thickness of 25 to 250 μm can be suitably used. If it is 25 μm or more, the film is not easily broken, and if it is 250 μm or less, it can be suitably used in terms of film weight, film price, and ease of winding.

  The weight bar 3 shown in FIGS. 1 and 6 is a metal plate serving as a weight for keeping the screen vertical, and is fixed to the lower part of the screen. The weight is suitably 0.5-3 kg. The size and shape may be appropriate, but the width is preferably matched to the screen, and the thickness and height can be determined by the necessary weight and other restrictions.

  The distance i between the front and back of the roll film in FIG. 2 is preferably 1 to 5 cm. If it is 1 cm or more, there is no risk that the overlapping film will be rubbed and damaged, and if it is 5 cm or less, light from the projector will not leak from the gap between the adjacent screens. Further, when the distance f is 5 cm or less, the distance from the projectors of the adjacent screens does not change greatly, so that the size of the image projected on the adjacent screens does not deviate greatly.

The overlapping portion of the adjacent screens has an average haze value c of the portion where the screens overlap as follows, where a is the haze value of the screen and b is the haze value when the two screens are stacked. It is preferable to satisfy.
a− (ba) × 0.6 <c <a + (ba) × 0.6 (1)

  The average value c of the haze of the overlapping portion of the screen is a value of a + (b−a) × 0.6 in the formula (1), that is, the difference between the haze value b and the single haze value a when two screens are stacked. If 60% of the image does not exceed the value obtained by adding the haze value a for one sheet, the overlapped part of the screen will not be significantly darkened, so the image can be viewed cleanly in the same manner as the other parts. it can.

  Further, the average value c of the haze of the portion where the screens overlap is a value of a− (b−a) × 0.6 of the formula (1), that is, the haze value b and the haze value when two screens are stacked. If 60% of the difference of a exceeds the value obtained by subtracting from the haze value a at the time of one sheet, the light diffusion effect of the part does not drop significantly, so the contrast of the projected image of the part is sufficient, The image is not partially blurred.

  Means for the average haze value of the overlapping portion to satisfy the above formula (1) include a method in which the overlapping portion has a rack and pinion rack cross-sectional shape as a first means, and a mat in the overlapping portion as a second means. There is a method of pasting a transparent adhesive tape on the surface. As another method, a method of applying a resin liquid to the mat surface is also conceivable.

A specific example of the above first means (rack and pinion rack cross-sectional shape) will be described below.
The end portions of the adjacent screens in FIG. 1 have a good rack cross-sectional shape of the rack and pinion shown in FIG. 3, and the width e where the screens overlap is 1 to 10% of each screen width d. If they overlap by 1% or more, the light from the projector will not leak directly out of the gap between the overlapping parts. If the overlapping portion is 10% or less, there is no excessive overlapping portion and each screen width can be used effectively, so there is no waste.

  The width f of the rack cross-sectional tooth is preferably 50% to 150% of the width e where the screens overlap.

  Similarly, the tooth height g is preferably 50% to 80% of the width e where the screens overlap.

  Similarly, the tooth interval h is preferably 50% to 80% of the width e where the screens overlap.

  By adjusting the width e where the screen overlaps, the tooth width f of the rack cross-sectional shape, the tooth height g, and the tooth interval h by the above ratio, the average haze value of the overlapping portion is expressed by the formula (1). The value of c shown in FIG. In this way, since the change in partial haze is small for the entire screen, a good projected image can be obtained. In addition, since the adjacent screens overlap each other, light from the projector does not leak from the gap.

  As an example of the first means, a screen having a width d of 100 cm and a haze of 91% is used, the width e where the screens are overlapped is 8 cm which is 8% of the width d, and the tooth width f of the rack cross-sectional shape is set to 8 cm. 100% of the e is 8 cm. Further, the edge of the screen was processed so that the tooth height g was 4.8 cm which was 60% of e and the tooth interval h was 4.8 cm which was 60% of e.

When 8 cm each of the edge portions of the screen thus processed is overlapped, the two screen portions are 55% of the width e × the screen length area where the screens overlap, and one screen portion is 45% of the area. became. The haze value b when the two screens were stacked was 96.5%, and the average c of the haze values of the area portion was 93.8%. Substituting these into the right and left sides of equation (1),
a + (b−a) × 0.6 = 94.3
a- (ba) × 0.6 = 87.7
And
87.7 <93.8 <94.3
Therefore, the expression (1) is satisfied.

  When this screen was placed in contact with the transparent glass inside the store side of the store and the image was projected, the projected image seen from the road looked beautiful, and the overlapping part of the screen could be appreciated without a sense of incongruity. In addition, the projection image could be satisfactorily appreciated without leakage of projection light from the overlapping part of the screen.

On the other hand, in the above example, a screen was produced in the same manner as in the above example, except that the tooth interval h was set to 3.2 cm, which is 40% of the width e of overlapping screens.
As described above, the portion of the two screens was 65% of the width e × the screen height area where the screens overlap, and the portion of the one screen was 35% of the area. When the two screens were stacked, the haze value b was 96.5%, and the average c of the haze values in the area was 94.6%. Substituting these into the right and left sides of equation (1),
a + (b−a) × 0.6 = 94.3
a- (ba) × 0.6 = 87.7
And
87.7 <94.6> 94.3
Therefore, Formula (1) is not satisfied.

  When this screen was installed in contact with the inside of the transparent glass on the road side of the store and the image was projected, there was no leakage of projection light from the overlapping part of the screen, but the image of the overlapping part of the projected image was dark and clean It was hard to call it an image.

  Moreover, in the said Example, the screen was produced similarly to the said Example and it was set as the comparative example 2 except the tooth width h having been 7.2 cm which is 90% of the width e with which a screen overlaps.

  In this way, a 2.4 × 1.6 cm portion without a screen was formed in a line in the overlapping portion of the screen, and leakage of projection light from the overlapping portion of the screen occurred. The observer was uncomfortable with the light directly from the projector.

FIG. 5 which is a specific example of the second means (bonding a transparent adhesive tape to the mat surface) will be described below.
When a transparent adhesive tape is bonded to the matted film, the adhesive layer of the tape fills the mat surface, and the transparency of the film increases and haze decreases. If a transparent adhesive tape is affixed on the mat | matte surface of the said overlapping part of a light transmission type screen using this, transparency will raise and the haze will fall in the part which affixed this tape compared with another part. Therefore, the overlapped portion has a slightly lower haze, so that the haze does not change much compared to the non-overlapped portion (FIG. 5-B).

  In this specific example, a transparent adhesive film is pasted on the matte surfaces of the overlapping screens. There are screens that can be used at that time, one-sided mats and two-sided mats. When using a single-sided matte film, it can be applied to the matte surface of one of the overlapping screens or the matte surfaces of both screens. When using a double-sided matte film, there are four overlapping matte surfaces, so stick the tape on one of the four surfaces, stick on the two surfaces, stick on the three surfaces, four surfaces There are 4 ways to paste on all surfaces.

If the above-mentioned pasting method is selected according to the haze of the screen to be used, when the haze value of the screen is a and the haze value when the two screens are overlapped is b, the average haze of the overlapping portion of the screen The value c can satisfy the following formula (1).
a− (ba) × 0.6 <c <a + (ba) × 0.6 (1)

  In this case, the overlapping width e is 1 to 10% of the width d of each roll screen. In this way, a good projected image can be obtained, and light from the projector does not leak from the gap between adjacent screens.

  The transparent adhesive tape used here can be one that is usually available. For example, polyester tape No. 553 (manufactured by Nichiban Co., Ltd.) can be used favorably.

  An example of this example is given. A double-sided mat screen having a screen width d of 120 cm and a haze of 97.8% is used. The width e of the overlapping screen is 6 cm, which is 5% of the width d of the screen. A transparent adhesive tape was pasted on the three surfaces, the surface and the surface to be indoors. The average value c of haze in the overlapping portion was 98.1%. Since the haze value b when the two sheets of the screen were overlapped was 98.5%, the average value c of the haze in the overlapping portion satisfies the formula (1).

  This screen was installed in contact with the transparent glass inside the store's road, and when the image was projected, the projected image seen from the road looked beautiful, and the overlapping part of the screen could be appreciated without a sense of incongruity. In addition, the projection image could be satisfactorily appreciated without leakage of projection light from the overlapping part of the screen.

  The film roll 2 shown in FIGS. 1, 2 and 6 may be a roll with a manual winding device or a roll with an electric winding device. The roll with a winding device may be installed on the ceiling of the store or on the wall surface above the glass surface. Further, it can be installed in the reverse direction under the floor and can be pulled up during use.

  As mentioned above, although the connection roll screen of the present invention has been described as connecting three, the number of the connection roll screens is not limited to this, and a larger number can be installed to make the entire surface of a wide glass surface into a screen. At that time, a plurality of projectors can be installed to project the same image or a plurality of different images.

DESCRIPTION OF SYMBOLS 1 ... Light transmission type screen 2 ... Winding roll part 3 ... Weight bar 4 ... Glass surface 5 facing the road, such as a store and a showroom ... The feeding side 6 of the screen drawn out from a winding roll ... Part 7 where transparent adhesive tape is pasted ... Part where part where transparent adhesive tape is pasted overlaps 8 ... Light transmission type connecting roll screen

Claims (3)

In a light transmission type connected roll screen in which a plurality of roll screens are arranged in parallel, the ends of the adjacent screens are arranged so as to overlap each other by 1 to 10% of the width of each roll screen. A light transmission type connected roll screen characterized in that an average value c of the haze of the overlapping part of the screen satisfies the following formula (1), where b is the haze value when two sheets are overlapped.
a− (ba) × 0.6 <c <a + (ba) × 0.6 (1)   2. The light transmissive screen according to claim 1, wherein the overlapping portion has a rack and pinion rack cross-sectional shape.   2. The light transmissive screen according to claim 1, wherein a transparent adhesive tape is bonded to the mat surface of the overlapping portion of the light transmissive screen.

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