JP2018163341A - Decorative screen and transmissive projection system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decorative sheet which can provide high-quality light projected from a light source, to observers, if a picture layer is formed to be thick.SOLUTION: The present invention includes a picture layer 18 having a plurality of light transmitting parts 20 lined in the direction of the layer surface, the light transmitting parts penetrating in the thickness direction and at least a part of the light transmitting parts opening in one end wider than in the other end.SELECTED DRAWING: Figure 2

Description

  The present invention is a decorative sheet that is decorated by means of a pattern, leather, texture resin, fabric, etc., and transmits light from a light source, and a transmission type projection system provided with the decorative sheet About.

  Transmission type screen, display (liquid crystal display (LCD), cathode ray tube display (CRT), plasma display (PDP), electroluminescence display (ELD), field emission display (FED)), touch panel, tablet PC, electronic paper, and There is a transmission type projection system represented by an icon display device using a single light source such as a warning lamp. In the process of transmitting the projection light from the light source, the projected image or the pattern brightened by the projection light is displayed so that the viewer can see it, or it functions as illumination that illuminates the surroundings with planar light. To do. Such a transmission type projection system is provided with a sheet for improving the quality of light reaching the observer side.

  For example, in a transmissive projection system including a projector and a transmissive screen as a sheet for displaying an image from the projector, a smoke-colored transparent is used with respect to the transmissive screen to absorb external light and improve the contrast of the image. It is common to provide a colored layer.

  However, in such a transmission type projection system, when light is not projected from the light source, the sheet (screen) sometimes has a semi-transparent black tone. Therefore, when the harmony with the surrounding scenery is considered, it has been desired that a decorative sheet having a layer decorated with a pattern or the like on the surface is used.

  For example, Patent Document 1 discloses a technique in which a light transmitting part and a concealing part are mixed, and an image (a picture layer) such as an advertisement is arranged in the concealing part. According to this, it is possible to show an image on a picture layer such as an advertisement when the video is not projected, and it is possible to display video light from the video source when the video is projected. This makes it possible to create a screen with high design in consideration of harmony with the surrounding landscape.

JP 2005-37818 A

  In such a decorative sheet, there is a demand for further variations in design, and as a decoration aspect, a material with a three-dimensional design feeling such as real leather, embossed resin, cloth, etc. is used, or the decorative part is formed thickly It was necessary to do.

However, in the decorative sheet as described in Patent Document 1, when the decoration becomes thicker in this way, the light from the light source such as an image source does not sufficiently transmit the light transmitting portion. was there. In particular, in a part that transmits light arranged at a position separated from the light source, light enters at a large angle with respect to the decorative sheet thickness direction, so that the light tends to reach the wall surface of the part and be blocked. there were.
Therefore, although the light is projected, the brightness may be partially reduced or may be dark as a whole. In such a case, the decorative sheet may not only cause brightness unevenness or darken, but the decorated design part may be unintentionally viewed despite projecting light. is there.

  Therefore, in view of the above problems, the present invention has an object to provide a decorative sheet that can provide an observer with high quality light projected from a light source even when the pattern layer is formed thick. And Moreover, the transmission type projection system using such a decorating sheet is provided.

  The present invention will be described below. In order to facilitate understanding of the present invention, reference numerals in the accompanying drawings are appended in parentheses, but the present invention is not limited to the illustrated embodiment.

  One aspect of the present invention is a decorative sheet (10, 110, 210, 310, 410, 610, 710) that transmits light projected from a light source (2, 702) to the viewer side, and is a pattern layer. (18), and a plurality of light transmitting portions (20, 120, 220, 320, 420) penetrating in the thickness direction are arranged in the layer surface direction in the pattern layer, and at least some of the light transmitting portions are This is a decorative sheet in which the area of the opening on the other side is larger than the area of the opening on the one side.

  Another aspect of the present invention is a decorative sheet (10, 110, 210, 310, 410, 510, 610, 710) that transmits light projected from the light source (2, 702) to the viewer side, The pattern layer (18) and the light shielding layer (16) for absorbing light are included, and the pattern layer and the light shielding layer include light transmitting portions (20, 20 ′, 120, 220, 320, 420, and 520) are arranged in the layer surface direction, and at least a part of the light transmission part is a decorative sheet in which the area of the opening on the light shielding layer side is larger than the area of the opening on the pattern layer side. .

  The decorative sheet may further include a light diffusion layer that scatters and transmits light.

  In the decorative sheet, the pattern layer may include at least one of a genuine leather, a textured resin, and a fabric.

  In the said decorating sheet | seat, you may form so that a light-incidence surface and a light emission surface may curve.

  Moreover, according to the further another aspect of this invention, it is equipped with a light source (2,702) and the said decoration sheet | seat, and the side with a large area of the opening of a light transmissive part is orient | assigned to the light source side, A transmissive projection system (1) can be provided.

  According to the present invention, even when the pattern layer is formed thick, the light projected from the light source can be provided to the observer with high quality.

1 is a perspective view of a transmissive projection system 1. FIG. It is the figure which represented the transmission type decorating screen 10 among the transmission type projection systems 1 in the cross section. It is a figure explaining the shape and pattern of the light transmissive part. FIG. 4 is a diagram for explaining a cross-sectional shape of a light transmission unit 20. It is a figure explaining the cross-sectional shape of light transmissive part 20 '. FIGS. 6A and 6B are views for explaining the shape and pattern of the light transmitting portion 120 of the transmissive decorative screen 110. It is a figure explaining the shape and pattern of the light transmissive part 220 of the transmissive | pervious decoration screen 210. FIG. It is a figure explaining the shape and pattern of the light transmissive part 320 of the transmissive | pervious decoration screen 310. FIG. FIG. 9A and FIG. 9B are views for explaining the shape and pattern of the light transmission part 420 of the transmission type decorative screen 410. FIG. 10A and FIG. 10B are views for explaining the shape and pattern of the light transmission part 520 of the transmission type decorative screen 510. 1 is a perspective view of a transmissive projection system 601. FIG. It is the figure which represented the transmissive | pervious decoration screen 610 among the transmissive | pervious projection systems 601 with the cross section. It is a figure explaining the transmission type projection system.

Hereinafter, the present invention will be described based on embodiments with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.
In addition, the shape of each component provided in the decorative sheet described below is actually very small or a thin sheet. Accordingly, in the drawings shown below, each shape is exaggerated and deformed for easy viewing. In addition, in the drawings, repeated symbols may be given to only some of them, and others may be omitted.

  FIG. 1 is a perspective view of a transmissive projection system 1 for explaining the first embodiment. FIG. 1 also shows the orientation in the posture in which the transmissive projection system 1 is used. FIG. 2 is a side view of the transmissive projection system 1, and a transmissive decorative screen 10 which is a decorative sheet provided here is shown in a cross section in the thickness direction along the vertical direction.

  As can be seen from FIGS. 1 and 2, the transmissive projection system 1 includes an image source 2 and a transmissive decorative screen 10. This form is an example in which the decorative sheet is applied as a transmissive decorative screen. Each will be described below.

The video source 2 functions as an aspect of the light source, and is a device that projects video light toward the transmissive decorative screen 10 as a light source accompanied with video information, and is sometimes called a projector or the like. As can be seen from FIG. 1 and FIG. 2, in this embodiment, the video source 2 is arranged at a position near the center of the transmissive decorative screen 10 in a plan view, and the video source 2 is directed toward the transmissive decorative screen 10. Project light.
However, the present invention is not limited to this, and the transmissive projection system can be configured by being disposed below or above the center of the transmissive decorative screen 10 in a plan view.

In this embodiment, an example in which an image source (projector) is applied as a light source will be described. However, other forms can be applied as a light source.
For example, it is designed in the form of a fixed image printed on a transparent film (such as an OHP sheet), a light-dark display with a light-shielding part (masking), and a warning icon An embodiment may be used in which a transparent light-transmitting portion or the like is transmitted by being illuminated from the back with a monochromatic light source (monochromatic light source), and this transmitted light is further projected toward a decorative sheet. At this time, information on different colors can be displayed by changing the color of the monochromatic light source. Such a configuration example will be described later (eighth configuration).
Further, it may be a light source that does not include video and image information and plays a role of illumination or lighting display. For example, the light source of an illuminating device, the light source of an evacuation route light, the lamp | ramp of a fire alarm, and the light source of a warning light can be mentioned.

The transmission type decoration screen 10 is one aspect of the decoration sheet, and is a sheet-like member as a whole formed by laminating a plurality of layers. In the present embodiment, the seat surface is installed so that the seat surface is stood in a vertical direction or a posture close to it in a deployed state at least during use. Further, when the transmission type decorating screen 10 is not in use, each layer may be configured to have flexibility so that it can be rolled to be compact.
In this embodiment, an example in which the screen surface is used to be substantially vertical will be described, but the present invention is not limited to this. For example, the screen surface may be installed in a posture that is almost horizontal like an operation screen of an automatic teller machine (ATM). Even in such a case, the present invention can be applied.

The transmissive decorative screen 10 transmits the image light projected from the image source 2 to the viewer A (see FIGS. 1 and 2) in an unfolded posture regardless of whether or not it can be rolled. By emitting, it functions as a screen.
Further, the transmissive decorative screen 10 can visually recognize the design appearing in the picture layer 18 when the image light is not projected from the image source 2, and is a highly designable screen.

  The transmissive decorative screen 10 of this embodiment includes a light diffusion layer 15, a light shielding layer 16, a colored picture shielding layer 17, a picture layer 18, and a transparent protective layer 19 from the image source 2 side. . Further, the transmissive decorative screen 10 is formed with a plurality of light transmissive portions 20 penetrating at least the light shielding layer 16, the colored pattern shielding layer 17, and the pattern layer 18 in the thickness direction. Each will be described below.

  The light diffusion layer 15 is a layer that allows the observer to visually recognize the image by scattering and transmitting the image light from the image source 2 to the observer side. Specific means for scattering light are known, and examples include a form in which light diffusion particles are dispersed in a transparent resin.

  The transparent resin for dispersing the light diffusing particles is not particularly limited as long as it has light permeability and can hold the light diffusing particles. For example, polyester resins, acrylic resins, polyester acrylate resins, polyurethane acrylate resins, urethane resins, epoxy resins, polycarbonate resins, acetal resins, vinyl resins, polyethylene resins, polystyrene resins, Examples thereof include polypropylene resins, polyamide resins, polyimide resins, melamine resins, phenol resins, silicone resins, fluororesins and other thermoplastic resins, thermosetting resins, and ionizing radiation curable resins.

  Examples of the light diffusing particles include inorganic particles such as silica, alumina, talc, zirconia, zinc oxide, and titanium dioxide, and organic particles such as polymethyl methacrylate, polystyrene, polyurethane, benzoguanamine, and silicone resin.

The average particle diameter of the light diffusing particles is preferably 6 μm or more and 10 μm or less, and more preferably 8 μm or more. By setting the average particle size to 6 μm or more, sufficient light diffusibility can be obtained. If the average particle size is larger than 10 μm, whitening of the layer due to aggregation of the particles becomes remarkable, and the image may be blurred.
The average particle diameter of the particles can be determined by using image processing software from a cross-sectional image of the light diffusion layer 15 by a cross-sectional electron microscope (transmission electron microscope such as TEM or STEM). Further, the average particle diameter of the particles may be obtained by manually calculating an average value using a cross-sectional electron microscope image in consideration of the scale. When the particles are present alone, the average particle diameter of the particles can be measured by a laser scattering method as long as the light diffusing particles are in a stage before being dispersed in the transparent resin.
When a fine-particle light diffusing material such as titanium oxide is used, the average particle size is 10 nm to 1000 nm, preferably 300 nm to 700 nm.

  The thickness of the light diffusion layer 15 is preferably 1 μm or more and 50 μm or less, more preferably 14 μm or more and 20 μm or less, and further preferably 16 μm or more and 18 μm or less. If the thickness of the light diffusion layer 15 is less than 1 μm, the light diffusion effect may not be sufficiently obtained. On the other hand, if the thickness of the light diffusion layer 15 exceeds 50 μm, the resolution of the displayed image is deteriorated, and the image may be blurred and observed.

  The light shielding layer 16 is a layer configured to absorb light. Thereby, the contrast of image light can be improved. The specific structure of the layer that absorbs light is known, and examples include a form in which a transparent resin contains a light-absorbing material such as light-absorbing particles, light-absorbing pigments, and dyes.

  Although the transparent resin for the light shielding layer 16 is not particularly limited, for example, polyester resin, acrylic resin, polyester acrylate resin, polyurethane acrylate resin, urethane resin, epoxy resin, polycarbonate resin, acetal resin, Thermoplastic resins such as vinyl resins, polyethylene resins, polystyrene resins, polypropylene resins, polyamide resins, polyimide resins, melamine resins, phenolic resins, silicone resins, fluorine resins, Examples include ionizing radiation curable resins.

  When using light absorbing particles as the light absorbing material, light absorbing colored particles such as carbon black are preferably used, but are not limited thereto. Specific examples include organic fine particles colored with metal salts such as carbon black, graphite, and black iron oxide, dyes, pigments, colored glass beads, and the like. In particular, colored organic fine particles are preferably used from the viewpoints of cost, quality, availability, and the like.

  The thickness of the light shielding layer 16 is not particularly limited, but is usually in the range of 1 μm to 1 mm. Preferably they are 2 micrometers or more and 0.1 mm or less, More preferably, they are 2 micrometers or more and 50 micrometers or less.

The colored picture shielding layer 17 is a layer for displaying a decoration such as a design drawn on the picture layer 18 so that an observer can easily see the design layer 18. When the picture layer 18 transmits light, the colored picture shielding layer 17 functions as a base of the picture layer 18. Therefore, the colored picture shielding layer 17 is an opaque layer having an appropriate color as a base.
The specific configuration in which the colored picture shielding layer 17 is an opaque layer having a predetermined color is known, but examples include a form in which a transparent resin contains white or a necessary color pigment or dye. Can do. Therefore, here, white is also included as a color.

  The thickness of the light shielding layer 16 is not particularly limited, but is usually in the range of 1 μm to 1 mm. Preferably they are 2 micrometers or more and 0.1 mm or less, More preferably, they are 2 micrometers or more and 50 micrometers or less.

  The pattern layer 18 is a layer that has been decorated (designed), and can be arranged here without any particular limitation, such as various patterns, color patterns, photographs, paintings, drawings, and the like. Such a design of the picture layer 18 can be formed, for example, by printing on a base material or by printing or pasting on a colored picture shielding layer.

  The transmissive decorative screen 10 can provide high quality image light even when the pattern layer 18 is formed thick. Therefore, in the transmissive decorative screen 10, the pattern layer 18 can be formed of a material that is thick in nature, and the degree of freedom in design can be increased. Examples of the material that thickens in this way include genuine leather, grain resin (including artificial leather), and fabric. Such a material has a peculiar texture, and the transmissive decorative screen 10 can be a highly designable screen utilizing the texture.

  In addition, the pattern layer 18 may be formed from a plurality of layers having respective functions. For example, the outermost surface of the pattern layer 18 may be a layer in which a pattern is formed, and a layer in which a layer that expresses tactile sensation such as unevenness and hardness (flexibility) and texture is laminated on this layer may be used.

  Here, the “texture resin” is a resin whose surface is patterned by texturing, and artificial leather, which is a resin with a leather pattern, is also classified as a texture resin. In addition, the texture of the texture resin is not limited to a leather pattern, and may be various patterns such as wood grain, rock grain, sand grain, and plain fabric.

  Although the specific thickness of the pattern layer 18 is not specifically limited, the range of 10 micrometers or more and 5 mm or less is preferable. More preferably, it is 20 μm or more and 2 mm or less. Some of the material of the picture layer 18 can be processed thinly, but if it is thinner than 10 μm, there is a risk of damaging the texture and feel. On the other hand, if the pattern layer 18 is thicker than 5 mm, it is difficult to handle from the viewpoint of production, and the durability due to deformation such as bending tends to be inferior.

The transparent protective layer 19 is a layer that protects the pattern layer 18 and the transmissive decorative screen 10 from contamination, scratches, and the like, and can be composed of a transparent resin, transparent glass, or the like.
In the case of using a transparent resin, for example, a layer made of a thermoplastic resin or a cured resin can be exemplified.

  Examples of the thermoplastic resin include acrylic resins such as polymethyl (meth) acrylate and polyethyl (meth) acrylate, polyolefin resins such as polypropylene and polyethylene, polycarbonate resins, vinyl chloride resins, polyethylene terephthalate (PET), and polybutylene terephthalate. (PBT), polyester resins such as polyethylene naphthalate (PEN), acrylonitrile-butadiene-styrene resin (ABS resin), acrylonitrile-styrene-acrylic ester resin, and the like. Note that “(meth) acryl” means acrylic or methacrylic.

The layer made of curable resin is a layer obtained by curing the curable resin composition, and the curable resin composition is a composition containing a curable resin. Examples of the curable resin composition include a thermosetting resin composition containing a thermosetting resin, an ionizing radiation curable resin composition containing an ionizing radiation curable resin, and the like.
Examples of thermosetting resins include unsaturated polyester resins, polyurethane resins (including two-component curable polyurethanes), epoxy resins, amino alkyd resins, phenol resins, urea resins, diallyl phthalate resins, melamine resins, guanamine resins, Examples include melamine-urea cocondensation resin, silicon resin, polysiloxane resin, and the like. The thermosetting resin composition contains components involved in the curing reaction of the thermosetting resin, for example, a catalyst, a curing agent (including a crosslinking agent, a polymerization initiator, a polymerization accelerator, etc.) and the like as necessary. May be.
An ionizing radiation curable resin is a resin that undergoes a crosslinking polymerization reaction upon irradiation with ionizing radiation and changes to a three-dimensional polymer structure. Ionizing radiation has energy quanta that can polymerize or crosslink among electromagnetic waves and charged particle beams. Although including charged particle beams such as an ion beam and an ion beam, ultraviolet rays (UV) or electron beams (EB) are usually used. Among the ionizing radiation curable resins, the electron beam curable resin can be made solvent-free, does not require a photopolymerization initiator, and provides stable curing characteristics.
As the ionizing radiation curable resin, for example, one or more of monomers, oligomers, prepolymers and the like having a polymerizable unsaturated bond, epoxy group or the like that can be crosslinked by irradiation with ionizing radiation in the molecule can be used.

  The thickness of the transparent protective layer 19 is not particularly limited, but is usually in the range of 1 μm to 0.3 mm. Preferably they are 1 micrometer or more and 0.15 mm or less, More preferably, they are 1.5 micrometers or more and 80 micrometers or less.

  The light transmission part 20 is a part for transmitting the image light diffused and transmitted by the light diffusion layer 15 and providing it to the observer side. In this embodiment, the light transmission part 20 is formed by a cavity such as a hole or a slit. The light transmitting portion 20 is a portion that transmits light through at least the light shielding layer 16, the colored pattern shielding layer 17, and the pattern layer 18 in the thickness direction, and is configured by holes and slits in this embodiment. A plurality of such light transmissive portions 20 are provided in the in-layer direction of the transmissive decorative screen 10. 3 and 4 are diagrams for explaining the shape and arrangement pattern of the light transmitting portions 20 in this embodiment. FIG. 3 is a view from the viewpoint of viewing the transmissive decorative screen 10 from the video source 2 side. FIG. 4 is an enlarged view of a part of the cross section of the transmissive decorative screen 10 shown in FIG. 2.

In the light transmissive portion 20 of this embodiment, the area of the opening 20a on the image source 2 side is larger than the area of the opening 20b on the observer side, and the inner wall surface 20c between the openings 20a and 20b is an inclined tapered surface. Accordingly, the light transmitting portion 20 is formed by a conical (conical frustum) hole with a top portion cut. Such light transmitting portions 20 are arranged in a grid in the vertical and horizontal directions in the layer plane direction of the screen.
As a result, as will be described later, even when the pattern layer 18 is thick, high quality light (video in this embodiment) can be provided to the observer.

Although the more specific shape of the light transmission part 20 is not specifically limited, By setting it as the following shapes, for example, it is set as the transmission type | mold decoration screen (decoration sheet) which has a remarkable effect. Can do.
Indicated by _{k 2} in FIG. 4, the size of the opening 20b in the observer side of the light transmitting portions 20 (light outgoing side) is preferably 10μm or more 300μm or less. If it is smaller than 10 μm, the dimensional accuracy is lowered, so that there is a risk of uneven brightness of light. On the other hand, if it is larger than 300 μm, the light transmission part 20 itself is easily visually recognized, and there is a possibility that a problem occurs in the appearance. More preferred _{k 2} is 20μm or more 150μm or less.
The inclination angle in the thickness direction of the light transmission portion 20 indicated by θ in FIG. 4 is preferably 10 ° or more and 75 ° or less. If it is smaller than 10 °, the incident efficiency of light (image light in this embodiment) may be reduced. On the other hand, if the angle is larger than 75 °, the dimensional accuracy is lowered from the viewpoint of manufacturing, so that there is a possibility that unevenness occurs in the light (image in this embodiment). More preferable θ is 30 ° or more and 60 ° or less.
Shown in _{k 1} in FIG. 4, the vertical size of the opening 20a in the video source 2 side of the light transmitting portions 20 (light incident side) is preferably 14μm or more 17mm or less. If it is smaller than 14 μm, the incident efficiency of light (image light in this embodiment) may be reduced. On the other hand, if it is larger than 17 mm, the dimensional accuracy is lowered from the viewpoint of manufacturing, and therefore there is a possibility that luminance unevenness occurs in the light (image in this embodiment). More preferred _{k 1} is 7mm or less than 27 [mu] m.
The pitch of the light transmission parts 20 indicated by p in FIG. 4 is preferably 20 μm or more and 600 μm or less, more preferably 40 μm or more and 300 μm or less. And the aperture ratio of the pattern layer 18 side (light emission side, observer side) by this is represented by (k ₂ / p) × 100%, and is preferably 20% or more and 50% or less. If the aperture ratio is smaller than 20%, the transmittance of light (image light in this embodiment) may be lowered and darkened. On the other hand, if the aperture ratio is larger than 50%, the surface area on the observer side of the pattern layer 18 becomes too small, which is not preferable from the viewpoint of appearance.

In the present embodiment, the light transmission part 20 by the truncated cone-shaped hole is exemplified, but the present invention is not limited to this, and the light transmission part by the hole of the truncated pyramid may be used. Further, as shown in FIG. 5, in the cross section in the thickness direction, the inclination in the thickness direction is not linear but curved, and a transmissive decorative screen 10 ′ having a light-transmitting portion 20 ′ like a bowl shape is obtained. You can also.
Further, the arrangement pattern is not limited to the lattice shape exemplified above, and an arrangement (staggered arrangement) alternately offset, an arrangement in accordance with a predetermined rule, a random arrangement, or the like can be appropriately employed.

  FIG. 6 shows a cross-sectional view of a transmissive decorative screen 110 having the light transmissive portion 120 of the second embodiment. This form also applies a decorating sheet to a transmission type decorating screen as one form of the decorating sheet. 6A is a vertical cross section, and FIG. 6B is a horizontal cross section. Since the transmissive decorative screen 110 is the same as the transmissive decorative screen 10 except for the light transmitting portion 120, the same portions are denoted by the same reference numerals and description thereof is omitted. The same applies to other forms described below.

In the transmissive decorative screen 110, in the light transmitting part 120, the opening area of the opening 120b on the viewer side is the same, but the inclination angle of the inner wall surface 120c (corresponding to θ in FIG. 4) differs depending on the arrangement location. . More specifically, the inclination angle of the light transmission part 120 on the outer periphery side of the screen is larger than the inclination angle of the light transmission part 120 at the center of the transmission type decorative screen 110 in plan view. Thereby, the opening area of the opening 120a on the image source side of the transmissive decorative screen 110 is larger in the light transmitting portion 120 on the screen outer peripheral side than in the light transmitting portion 120 in the center in plan view.
By providing such a light transmission part 120, it becomes easy to permeate | transmit light further especially in the screen outer peripheral part in which light is easy to be shielded.

  FIG. 7 is a diagram for explaining a transmissive decorative screen 210 having the light transmissive portion 220 of the third embodiment, and a diagram corresponding to FIG. 3 is shown. This form also applies a decorating sheet to a transmission type decorating screen as one form of the decorating sheet. The transmissive decorative screen 210 is the same as the transmissive decorative screen 10 except for the light transmitting portion 220.

In the transmissive decorative screen 210, in the light transmissive portion 220, the inclination angle of the inner wall surface 220c (corresponding to θ in FIG. 4) is the same in any light transmissive portion 220, but the opening of the viewer-side opening 220b. The area varies depending on the location. More specifically, the opening 220b on the viewer side of the light transmitting portion 220 on the outer periphery side of the screen is larger than the opening area of the opening 220b on the viewer side of the light transmitting portion 220 in the center of the transmission type decorative screen 210 in plan view. The opening area is larger. As a result, the opening area of the opening 220a on the image source side of the transmissive decorative screen 210 is also larger in the light transmitting portion 220 on the outer peripheral side of the screen than in the light transmitting portion 220 in the center in plan view.
Providing such a light transmission part 220 also makes it easier to transmit light particularly at the outer periphery of the screen where light is easily shielded.

  FIG. 8 is a diagram for explaining a transmissive decorative screen 310 having the light transmissive portion 320 of the fourth embodiment, and a diagram corresponding to FIG. 3 is shown. This form also applies a decorating sheet to a transmission type decorating screen as one form of the decorating sheet. The transmissive decorative screen 310 is the same as the transmissive decorative screen 10 except for the light transmitting portion 320.

In the transmissive decorative screen 310, in the light transmitting portion 320, at least a part of the plurality of light transmitting portions 320 is an elliptic frustum having an elliptical bottom. More specifically, the shape of the light transmission part 320 at the center in plan view of the transmission type decorative screen 310 is a truncated cone, but the shape of the light transmission part 320 on the outer peripheral side of the screen is an elliptical truncated cone. At this time, it is preferable that the direction of the major axis of the ellipse of the openings 320a and 320b which are the upper and lower bases of the elliptical truncated cone is toward the center of the screen in plan view.
Providing such a light transmission part 320 also makes it easier for light to pass through particularly at the outer periphery of the screen where light is easily shielded. Here, the elliptical truncated cone is described as an example, but a rectangular truncated pyramid may be used, and the shape may be arranged so that the direction parallel to the long side is directed to the center in the plan view of the screen.

  FIG. 9 is a diagram illustrating a transmissive decorative screen 410 having a light transmissive portion 420 according to the fifth embodiment. This form also applies a decorating sheet to a transmission type decorating screen as one form of the decorating sheet. 9A is a view corresponding to FIG. 3, and FIG. 9B is a sectional view in the thickness direction in the vertical direction. The transmissive decorative screen 410 is the same as the transmissive decorative screen 10 except for the light transmitting portion 420.

The transmissive decorative screen 410 is a screen having a pattern in which slit-like light transmissive portions 420 are arranged. The light transmissive portion 420 extends in the horizontal direction, and a plurality of light transmissive portions 420 are arranged in the vertical direction. It is. The light transmitting portion 420 is also formed so that the opening area of the opening 420a on the image source side is larger than the opening area of the opening 420b on the observer side, and when viewed in a cross-sectional shape as can be seen from FIG. It can be considered in the same way as in FIG.
Such a transmission type decoration screen 410 also has the effect of the present invention. In this example, the light transmission unit 420 extends in the horizontal direction and a plurality of light transmission units 420 are arranged in the vertical direction. However, the light transmission unit 420 is not limited to this, and extends in the vertical direction. The transmission unit 420 may be arranged in the horizontal direction.

  FIG. 10 is a diagram illustrating a transmissive decorative screen 510 having a light transmissive portion 520 according to the sixth embodiment. This form also applies a decorating sheet to a transmission type decorating screen as one form of the decorating sheet. FIG. 10A is a view corresponding to FIG. 3, and FIG. 10B is an enlarged view of a part of the thickness direction sectional view in the vertical direction. The transmissive decorative screen 510 is the same as the transmissive decorative screen 10 except for the light transmitting portion 520.

The transmissive decorative screen 510 is a screen having a light transmissive portion 520 including a groove portion 521 and a hole portion 522.
The groove portion 521 has a form in which a plurality of groove portions 521 are arranged in the vertical direction while penetrating the light shielding layer 16 and the colored pattern shielding layer 17 in the thickness direction and extending in the horizontal direction.
The holes 522 are holes that penetrate the pattern layer 18 and communicate with the grooves 521, and the plurality of holes 522 are arranged along the direction in which the grooves 521 extend.

  Such a light transmitting portion 520 is also formed so that the opening area of the image source side opening 520a is larger than the opening area of the opening 520b on the observer side, and has the effect of the present invention. In this example, the groove portion 521 extends in the horizontal direction, and the plurality of groove portions 521 are arranged in the vertical direction. It is good also as a made form. Further, the inner wall surface 520c of the groove 521 and the hole 522 may be parallel to the thickness direction as shown in FIGS. 10A and 10B, but has an inclination with respect to the thickness direction. It may be.

  Each form of the light transmission parts 20, 20 ′, 120, 220, 320, 420, and 520 described so far can be applied in combination if possible, and it is not always necessary to apply any of them alone.

  The light transmission parts 20, 20 ′, 120, 220, 320, 420, and 520 are hollow, and the inside thereof is filled with air. However, the light transmission part is not limited to this, and the inside of the light transmission part is filled with a transparent resin. May be.

  The light transmitting portions 20, 20 ′, 120, 220, 320, 420, and 520 penetrate the light shielding layer 16, the colored pattern shielding layer 17, and the pattern layer 18 in the thickness direction. In addition, The transparent protective layer 19 can also be formed so as to penetrate therethrough.

  Moreover, what is necessary is just the form mentioned above by the at least one light transmissive part among several light transmissive parts with which a transmission type decorating screen is equipped. For example, since the light transmission part at the center of the screen easily transmits light, a light transmission part having a columnar shape may be applied.

  FIGS. 11 and 12 are diagrams for explaining a transmission projection system 601 according to the seventh embodiment. FIG. 11 is a perspective view corresponding to FIG. FIG. 12 is a view of the transmissive projection system 601 as viewed from the side, and the transmissive decorative screen 610 provided here is shown in a cross section in the thickness direction along the vertical direction.

As can be seen from FIGS. 11 and 12, the transmissive projection system 601 includes an image source 2 and a transmissive decorative screen 610. However, the transmissive decorative screen 610 is a screen having a curved screen surface that becomes a light incident surface and a light outgoing surface of the transmissive decorative screen 10, and the components are considered to be the same as those of the transmissive decorative screen 10. be able to.
Thus, even a screen having a curved screen surface has the effects of the present invention.

A transmissive decorative screen having the above-described configuration can be produced, for example, as follows. The transmissive decorative screen 10 will be described as an example.
The light transmitting portion 20 is formed in a desired shape and pattern with respect to the light shielding layer 16, the colored pattern shielding layer 17, and the pattern layer 18 laminated with the adhesive. This can be done by a known drilling process.
The light diffusing layer 15 is adhered to the surface of the light shielding layer 16 of the laminated body of the light shielding layer 16, the colored picture shielding layer 17, and the picture layer 18 formed in this way with an adhesive. Further, a transparent protective layer 19 is attached to the surface of the pattern layer 18 with an adhesive.

  Next, the operation of the transmissive decorative screen 10 will be described with reference to the optical path example shown in FIG. However, the optical path example shown in FIG. 2 conceptually represents the path of light, and does not accurately represent the degree of refraction or the angle of reflection.

When image light is projected from the image source 2 onto the transmissive decorative screen 10, the light emitted from the image source 2 reaches the light diffusing unit 15 while spreading radially, as indicated by a one-dot chain line in FIG. 2. Then, as shown by the image light L1 and the image light L2 in FIG. 2, the light becomes diffused light that can be visually recognized as an image, and passes through the light transmitting portion 20 and reaches the observer A. Visible to the person.
At this time, the image light L1 irradiated to the light transmission portion 20 disposed on the outer periphery side of the screen farthest from the image source 2 is more than the image light L2 irradiated to the light transmission portion 20 disposed near the center of the screen. However, since it has a large angle with respect to the thickness direction, it normally reaches the inner wall surface of the light transmission part and is easily blocked. However, since the light transmitting unit 20 of the present embodiment has the above-described form, it is easy to transmit the image light, so that a high-quality image can be provided to the observer even at the outer periphery of the screen. it can. Even when a light source that does not have video information or image information is used, it is possible to prevent, for example, illumination light from becoming dark at the outer periphery of the screen, and provide high-quality light to the viewer.

  On the other hand, the image light L3 that has reached the light diffusion layer 15 becomes diffused light and becomes visible light as an image, but is absorbed here because it reaches the light shielding layer 16. Since the image light that does not reach the observer is appropriately absorbed by the light shielding layer 16, the contrast of the image light that reaches the observer can be increased without affecting other image light.

As described above, according to the transmissive decorative screen 10, an image with high contrast can be provided. Therefore, when projecting image light from the image source 2, the observer uses the pattern of the pattern layer 18. You can see a video of appropriate quality.
According to the transmissive decorative screen 10, since the light transmission part 20 is largely opened on the image source 2 side, even the light transmission part 20 separated from the image source 2 can easily transmit the image light. Therefore, the transmissive decorative screen 10 can provide a homogeneous image regardless of the position of the screen. When a light source that does not have video information or image information is used, for example, the illumination light is prevented from being darkened at the outer periphery of the screen, and light with good uniformity can be provided regardless of the position.

On the other hand, when light is not projected from the video source 2, since the light is not provided through the light transmission unit 20, the observer can visually recognize the design appearing on the picture layer 18. At this time, since the light shielding layer 16 absorbs at least part of the light on the back side (the side opposite to the observer side), the design of the picture layer 18 can be appropriately viewed even if the back side is slightly bright.
Moreover, according to the transmissive | pervious decoration screen 10, since the pattern layer 18 can be formed thickly by the said structure of the light transmission part 20, the freedom degree of the material used for the pattern layer 18 increases, and a screen with a high design variation. It becomes.

Therefore, such a decorative sheet (in this embodiment, a transmissive decorative screen) can be applied to a wide range of applications that require an excellent appearance. For example, automotive interior and exterior applications, residential and commercial facility applications, and furniture applications.
That is, although the transmissive projection system using the decorative sheet as the transmissive decorative screen has been described above, the present invention is not limited to this, and visual recognition is performed without imaging image light on the screen as in a display. A decorative sheet may be used for a transmissive projection system that can be used, or a decorative sheet may be used for a transmissive projection system that uses a light source that does not need to be imaged like a simple warning lamp.
FIG. 13 shows a diagram for explaining an example (eighth embodiment) of a transmission type projection system that does not require image formation in this way.

  FIG. 13 is a diagram for explaining the eighth embodiment, and a diagram for explaining the transmission type projection system 701. FIG. 13 is a view of the transmissive projection system 701 as viewed from the side, and the light source 702 and the decorative sheet 710 provided therein are shown in a cross section in the thickness direction along the vertical direction. As can be seen from these, the transmissive projection system 701 includes a light source 702 and a decorative sheet 710.

The light source 702 is a light source that includes a light emitting unit 703 and a light shielding unit 704.
The light-emitting portion 703 is a part that functions as a light-emitting source, and in this embodiment, a plurality of LEDs 703a are arranged here. The plurality of LEDs 703a are individually controlled to be turned on and off, and the LEDs 703a only in necessary places can be turned on.
The light shielding portion 704 is a member that is disposed on the light output side of the light emitting portion 703 and is formed with a transmission portion 704a that penetrates in the thickness direction of the sheet by a so-called punched pattern or the like with respect to the light shielding property. The transmissive portion 704a is designed so that the light transmitted through the transmissive portion 704a has a desired form.
According to such a light source 702, the design drawn on the transmission part 704a of the light shielding part 704 such as a warning lamp can be brightly displayed by the light emitting part 703 so as to be visible.

As can be seen from FIG. 13, the decorative sheet 710 includes a light shielding layer 16, a colored pattern shielding layer 17, a pattern layer 18, a transparent protective layer 19, and a light transmission portion 20. Since each structure is the same as that of the above-mentioned decorating sheet 10 (transmission type decorating screen 10), the same code | symbol is attached | subjected here and description is abbreviate | omitted.
However, the decorative sheet 710 is not provided with the light diffusion layer 15 provided in the decorative sheet 10. This is because the light emitted from the light source 702 does not need to be imaged by the decorative sheet 710 in this embodiment. Thus, a light diffusion layer becomes unnecessary in a decorating sheet by the property of a light source.

  The decorative sheet 710 as described above and the transmission projection system 701 using the decorative sheet 710 also have the effects described above.

As described above, the objects to which the decorative sheet can be applied are wide, and specifically, the following can be cited in addition to the above.
Examples of the use of automobile interior and exterior include automatic display displays, warning lamps, room lamps, foot lamps, illumination lamps, vehicle width lights, headlights, tail lamps, and blinkers.
Examples of applications for residential and commercial facilities include displays such as information boards, advertisements, signboards, lighting for lighting fixtures, windows, show windows, etc., embedded displays placed in lighting, walls, doors, partitions, etc. it can.
As for the use of furniture, for example, displays such as TVs, kitchens, bathrooms, bedrooms, door phones, furniture with embedded displays, home appliances, desks, chairs, shelves, partitions, chests, getter boxes, beds, vacuum cleaners, A refrigerator, a rice cooker, a microwave oven, a washing machine, etc. can be mentioned.

1, 601, 701 Transmission type projection system 2, 702 Light source (video source)
10, 110, 210, 310, 410, 510, 610 decorative sheet (transmission type decorative screen)
DESCRIPTION OF SYMBOLS 15 Light diffusing layer 16 Light shielding layer 17 Colored pattern shielding layer 18 Picture layer 19 Transparent protective layer 20, 20 ', 120, 220, 320, 420, 520 Light transmission part 710 Decorative sheet

Claims (6)

A decorative sheet that transmits light projected from a light source to an observer side,
Has a pattern layer,
In the pattern layer, a plurality of light transmitting portions penetrating in the thickness direction are arranged in the layer surface direction,
At least a part of the light transmission part is a decorative sheet in which the area of the opening on the other side is larger than the area of the opening on the one side. A decorative sheet that transmits light projected from a light source to an observer side,
A pattern layer and a light shielding layer that absorbs light;
In the pattern layer and the light shielding layer, a plurality of light transmission portions penetrating in the thickness direction are arranged in the layer surface direction,
At least a part of the light transmission part is a decorative sheet in which the area of the opening on the light shielding layer side is larger than the area of the opening on the pattern layer side.   Furthermore, the decorating sheet of Claim 1 or 2 which has a light-diffusion layer which scatters and permeate | transmits light.   The decorative sheet according to any one of claims 1 to 3, wherein the pattern layer includes at least one of a leather, a textured resin, and a fabric.   The decorative sheet according to any one of claims 1 to 4, wherein the light incident surface and the light outgoing surface are curved. A light source;
A decorative sheet according to any one of claims 1 to 5,
A transmissive projection system in which a side with a large area of an opening of the light transmission portion is arranged facing the light source side.

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