JP4748284B2 - Information display panel and transportation equipment equipped with the information display panel - Google Patents

Description

  The present invention relates to an information display panel having a printed layer on both sides of a flat light-transmitting support, and in particular, an information display having a printed layer in which a light-shielding layer having a light-shielding property and a light-reflecting reflective layer are combined. The present invention relates to a transportation device including the panel and the information display panel.

  In the information display panel of Patent Document 1 as an example of the prior art, white translucent ink is applied to a position corresponding to a character / pattern portion on the surface of the viewer side of the translucent substrate, and this white A black opaque ink is applied around the translucent ink. In addition, chromatic color translucent ink is applied to the position corresponding to the character / pattern part on the other side of the base material, and a lattice pattern is applied to the other part by printing with chromatic color translucent ink. Yes.

  According to the configuration of the information display panel of Patent Document 1, when the lamp arranged behind the other side of the information display panel is not lit, the light and the character / design portion are white with white translucent ink due to external light. It is visually recognized, and the ground color part other than the character / design part is visually recognized in black. In addition, when the lamp is lit, the light of the lamp is irradiated from the back side, so that the light that passes through the chromatic color translucent ink makes the character / picture part visible in chromatic color and is present in the other ground parts. A colored lattice pattern appears.

However, in the technique of Patent Document 1, only a lattice pattern appears on the outer periphery of the character / picture when the lamp is turned on, and it has not been possible to generate indirect light on the outer periphery of the character / picture and display it beautifully.

Utility Kaihei 5-64727

  The information display panel of the present invention produces an effect of indirect light leaking from the outer periphery of a character, a picture, or the like, or a combination of the indirect light and direct light when a light source disposed behind the information display panel is turned on. It is possible to do that. Due to these effects, to provide an information display panel that can display characters and pictures more beautifully by making the letters and pictures feel three-dimensional when an observer visually recognizes these lights. It is an object of the present invention.

The present invention has the following configuration in order to solve the above problems.
The invention described in claim 1
An information display panel illuminated from the back by a light source,
The information display panel comprises a light transmissive support, a first reflective layer, a picture layer, a light shielding layer,
A first reflective layer having a predetermined pattern is laminated on the surface on the observer side, which is one surface of the light transmissive support,
On the first reflective layer, a picture layer is laminated in a state where at least part of the first reflective layer overlaps,
A light-shielding layer having a predetermined pattern is laminated on the surface on the side where the light source, which is the other surface of the light-transmissive support, is disposed,
When the length of the entire outer periphery of the pattern layer is L0 and the outer periphery of the pattern layer in the region where the end of the first reflective layer protrudes from the end of the pattern layer is L1, (L1 / L0) × 100 = 15% or more of range,
The diameter of the smallest circle that can surround the pattern formed by the pattern layer or the pattern layer opening is R, and the width of the portion where the end of the first reflective layer 2 protrudes from the end of the pattern layer When the maximum value of L2 is L2, it is in the range of (L2 / R) × 100 = 0.25% to 5%,
An information display panel, wherein a pattern shape formed by an opening portion of the pattern layer and a pattern shape formed by the light shielding layer substantially overlap each other.

The invention according to claim 2 is an information display panel in which a second reflective layer is laminated between the light transmissive support and the light shielding layer, and the second reflective layer and the light shielding layer are The information display panel according to claim 1, wherein the information display panel is substantially overlapped.

The invention according to claim 3 is an information display panel in which a second reflective layer is laminated between the light transmissive support and the light shielding layer, and the second reflective layer and the light shielding layer 2. The information display panel according to claim 1, wherein at least a part of the information display panel is overlapped, and the second reflection layer and the light shielding layer have a portion that does not overlap at least a part of the first reflection layer. .

According to a fourth aspect of the invention, according to any one of claims 1 to 3, wherein the reflectance to light of wavelength 380~780nm of the first reflective layer is less than 98% 60% An information display panel.

The invention according to claim 5 is the information display panel according to any one of claims 1 to 4, wherein the total light transmittance of the pattern layer is 0% or more and 20% or less.

The invention according to claim 6 is the information display panel according to any one of claims 2 to 5 , characterized in that the total light transmittance of the light shielding layer is 0% or more and 20% or less.

The invention according to claim 7, according to any one of claims 3 to 6 reflectance to light of wavelength 380~780nm of the second reflective layer is equal to or less than 98% 40% An information display panel.

According to an eighth aspect of the present invention, the light transmissive support is made of polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, polystyrene, methacryl / styrene copolymer, or acrylonitrile / styrene copolymer. The information display panel according to claim 1 , wherein the information display panel is any one of the resins.

The invention according to claim 9 is the information display panel according to any one of claims 1 to 7, wherein the light-transmitting support is a resin having a haze value of 12% to 92%. is there.

In a tenth aspect of the present invention, the light transmissive support includes a light transmissive layer and a light diffusion layer,
The light transmission layer is a resin of any one of polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, polystyrene, methacryl / styrene copolymer or acrylonitrile / styrene copolymer, and the light diffusion layer The information display panel according to claim 1 , wherein the information display panel is a resin having a haze value of 12% to 92%.

The invention according to claim 11 is the information display panel according to any one of claims 1 to 10, wherein the thickness of the light-transmissive support is in a range of 0.05 to 5 mm. .

According to a twelfth aspect of the present invention, at least the information display panel according to any one of the first to eleventh aspects is disposed between an observer and a direct light source, and the other surface of the light transmissive support is the direct light mold. A transportation device characterized by being arranged to face a light source.

According to a thirteenth aspect of the present invention, at least the information display panel according to any one of the first to eleventh aspects is disposed between an observer and a surface light source including an edge light type light source and a light guide plate, and the light transmission is performed. A transport device, wherein the other surface of the conductive support is disposed so as to face the surface light source.

  The information display panel of the present invention has a configuration in which a pattern layer having characters and patterns and a reflective layer capable of decorating the pattern layer are laminated on one surface side on a light-transmitting substrate. Different areas of the layer and the reflective layer give a three-dimensional effect due to pseudo-shadows. In addition, the light incident from the light source placed behind the information display panel leaks as indirect light from the outer periphery of the pattern layer with characters and patterns, making the characters and patterns more solid and beautiful. There is an effect that can be displayed.

Sectional drawing of 1st embodiment of the information display panel of this invention. Sectional drawing of 2nd embodiment of the information display panel of this invention. It is the top view which looked at the information display panel of this invention from the observer side, Comprising: It is a schematic diagram which shows the arrangement | positioning relationship of the minimum circle | round | yen (diameter R) which can surround the pattern layer 3, the 1st reflection layer 2, and the pattern layer 3. .

  Exemplary embodiments of an information display panel according to the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a sectional view of an information display panel 7 according to the first embodiment of the present invention.
In the information display panel 7, the first reflective layer 2 and the pattern layer 3 are sequentially laminated on one surface side of the light transmissive support 1, and the light shielding layer 4 is laminated on the other surface side of the light transmissive support 1. It has been done. The light source 5 is disposed on the other surface side of the light-transmissive support 1, and visual observation is performed from the viewer 6 side.

  The light-transmitting support 1 can be selected from any of three types of configurations: only a transparent resin, only a diffusible resin, and a laminate of a transparent resin layer and a diffusible resin layer.

When the transparent substrate 1 is composed of only transparent resin, polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polystyrene, methacryl / styrene copolymer, acrylonitrile / styrene copolymer, polymethyl methacrylate or acrylic are used. can do.
The thickness of the light transmissive support 1 at this time is preferably 0.05 mm or more because workability in a process of forming a light shielding layer and a reflection layer, which will be described later, is required, and when incorporated in an information display device casing It is preferably 5 mm or less in order not to be restricted by space. Further, if the transparent resin is used alone, the loss of the amount of light when the light from the light source 5 passes through the light-transmissive support 1 can be reduced, so that characters and designs can be displayed brighter when the light source 5 is turned on. .

When the light-transmitting support 1 is composed only of a diffusible resin, it is a polycarbonate, polystyrene, methacryl / styrene copolymer, or acrylic that has a spherical or amorphous shape and contains organic or inorganic light diffusing fine particles. An organic resin containing at least one of them can be used. The thickness of the light transmissive support 1 at this time is preferably 0.05 mm or more because workability in a process of forming a light shielding layer and a reflection layer, which will be described later, is required, and when incorporated in an information display device casing It is preferably 5 mm or less in order not to be restricted by space. Moreover, by comprising only diffusible resin, a part of direct incident light from the light source 5 is scattered by diffusible resin, and the observer 6 from the periphery of the opening part 3a of the 1st reflective layer 2 and the pattern layer 3 is shown. In order to come out to the side, the brightness of indirect light can be increased.

When the light-transmissive support 1 has a laminated structure of a transparent resin layer and a diffusible resin layer, the transparent resin layer includes polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polystyrene, methacryl / styrene copolymer, acrylonitrile / Styrene copolymer, polymethyl methacrylate or acrylic, polycarbonate, polystyrene, methacryl / styrene copolymer containing light diffusing fine particles consisting of spherical or amorphous and organic or inorganic in the diffusible resin layer, An organic resin containing at least one of acrylics can be used.
The thickness of the light transmissive support 1 at this time is preferably 0.05 mm or more because workability in a process of forming a light shielding layer and a reflective layer, which will be described later, is required. 5 mm or less is preferable in order not to be subject to physical restrictions. In addition, because of the configuration including the diffusible resin layer, part of the direct incident light from the light source 6 is scattered by the diffusible resin layer, and from the periphery of the opening 3a of the first reflective layer 2 and the pattern layer 3 In order to appear on the viewer 6 side, the brightness of the indirect light can be increased.
The order of arrangement of the transparent resin layer and the diffusible resin layer at this time, that is, which is arranged on the viewer 6 side and which is arranged on the light source 5 side may be either.

The first reflective layer 2 is provided on one surface of the light transmissive support 1 (the surface on the side of the observer 6).
The first reflective layer 2 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  Although it is desirable to use white ink for the first reflective layer 2, it is not limited to white ink as long as it has a light diffuse reflection effect. Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, a reflective effect will come out easily. When the light source 5 is turned on, the light reflected by the first reflective layer 2 appears to leak to the outer periphery of the first reflective layer 2. Further, the portion of the first reflective layer 2 that protrudes from the pattern layer 3 (described later) is pseudo-recognized as a shadow of the pattern layer 3 by the observer, and has the effect of making the stereoscopic effect more felt.

The pattern layer 3 is laminated on the first reflective layer 2 on one surface of the light transmissive support 1.
The pattern layer 3 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  Although it is desirable to use black ink for the pattern layer 3, it is not limited to black ink as long as it has a light shielding effect. Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, the light-shielding effect will come out easily. When the light source is turned on, the light that is transmitted without being reflected by the first reflective layer 2 is blocked by the pattern layer 3, and the pattern layer 3 portion is visually recognized darkly.

  The first reflective layer 2 and the picture layer 3 are formed in a shape having a predetermined pattern such as characters and pictures. At this time, the portion where the first reflective layer 2 and the pattern layer 3 are formed may represent a pattern such as a character or a pattern, and the opening 3a that is not formed may represent the background. The part in which the one reflective layer 2 and the pattern layer 3 are formed may represent the background, and the opening 3a not formed may represent a pattern such as a character or a pattern.

  The pattern layer 3 is formed in a smaller area than the first reflective layer 2. That is, when observed from the viewer 6 side, there is a region where the first reflective layer 2 protrudes from the end of the pattern layer 3. The region where the first reflective layer 2 protrudes from the end of the pattern layer 3 is observed as if it is a shadow of the pattern layer 3, and the observer 6 feels a stereoscopic effect.

The effect of the three-dimensional effect due to the region where the first reflective layer 2 protrudes from the end of the pattern layer 3 is easily obtained under the following conditions [A] [A]. (See Figure 3)
[A] In a certain area on the light transmissive support 1, the length of the entire outer periphery of the pattern layer 3 is L0, and the end of the first reflective layer 2 protrudes from the end of the pattern layer 3. When the length of the outer periphery of the pattern layer 3 is L1, the range is (L1 / L0) × 100 = 15% or more.
[A] The diameter of the smallest circle that can surround the character / pattern formed by the pattern layer 3 or the opening 3a is R, and the width of the portion where the first reflective layer 2 protrudes from the end of the pattern layer 3 When L2 is the maximum value of (L2 / R) × 100 = when it is in the range of 0.25% to 5%.

FIG. 3 is a plan view of the information display panel of the present invention as viewed from the observer side, and is a schematic diagram showing the arrangement relationship of the minimum circle of diameter R that can surround the pattern layer 3, the first reflective layer 2, and the pattern layer 3. FIG.
In FIG. 3, the entire length L0 of the outer periphery of the pattern layer 3 is the length of the broken line, and the length of the outer periphery of the pattern layer 3 in the region where the first reflective layer 2 protrudes from the end of the pattern layer 3. L1 is a length obtained by combining the lengths of the left end and the lower end of the pattern layer 3.
In FIG. 3, the diameter of the smallest circle that can surround the characters / patterns formed by the pattern layer 3 is R, and the width of the portion where the first reflective layer 2 protrudes from the end of the pattern layer 3. Is set to L2.

When the value of (L1 / L0) is less than 15% or when the value of (L2 / R) is less than 0.25%, the region where the end of the first reflective layer 2 protrudes is too small. The three-dimensional effect is not obtained without being recognized as a shadow of the pattern layer 3.
If the value of (L2 / R) exceeds 5%, the protruding portion of the first reflective layer 2 is recognized not as a shadow of the pattern layer 3, but as a character / pattern different from the pattern layer 3. Therefore, a three-dimensional feeling cannot be obtained.

A light shielding layer 4 is provided on the other surface (light source 5 side) of the light transmissive support 1.
The light shielding layer 4 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  The light shielding layer 4 has a pattern that is substantially the same shape as the opening 3a region where the first reflective layer 2 and the pattern layer 3 are not formed, and is provided at the same position as the opening 3a. . Therefore, the opening 4a in which the light shielding layer 4 is not formed has a pattern having substantially the same shape as the portion in which the first reflective layer 2 and the picture layer 3 are formed, and the first reflective layer 2 and the picture layer 3 is aligned and provided at substantially the same position.

  Although it is desirable to use black ink for the light shielding layer 4, it is not limited to black ink as long as it has a light shielding effect. Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, the light-shielding effect will come out easily.

When the light source 5 is lit, a region where the light-shielding layer 4 is formed is shielded by the light shielding layer 4, since the region where the pattern layer 3 is formed is shielded by the pattern layer 3, the majority of the direct light Does not reach the observer 6 side, and part of the light that has passed through the opening 4a on the light shielding layer 4 side reaches the observer 6 side from the periphery of the opening 3a. Thereby, it is visually recognized that light spreads on the outer periphery of the region where the first reflective layer 2 and the picture layer 3 are formed, and characters, pictures and the like are displayed beautifully.

FIG. 2 shows a sectional view of the information display panel 18 according to the second embodiment of the present invention.
In the information display panel 18, the first reflective layer 12 and the pattern layer 13 are sequentially laminated on one surface side of the light transmissive support 11, and the second reflective layer is disposed on the other surface side of the light transmissive support 11. 14 and the light shielding layer 15 are laminated | stacked in order. A light source 16 is disposed on the other surface side of the light transmissive support 11 and is viewed from the viewer 17 side.

  The materials and production methods of the light transmissive support 1, the first reflective layer 12, the pattern layer 13, and the light shielding layer 15 are the same as those in the first embodiment. Further, regarding the first reflective layer 12 and the pattern layer 13, L0, L1, L2, and R are set in the same manner as in the first embodiment, and the range of desirable (L1 / L0) values and desirable (L2 / R). ) Value range is the same as in the first embodiment.

Here, the second reflective layer 14 provided on one surface of the light transmissive support 1 will be described.
The second reflective layer 14 can be provided by screen printing. In particular, letterpress printing, flexographic printing, offset printing, gravure printing, ink jet printing, and the like can be used without being limited to screen printing.

  Like the light shielding layer 4 in the first embodiment, the second reflective layer 14 has a pattern that is substantially the same shape as the opening 13a region where the pattern layer 13 and the first reflective layer 12 are not formed. It is aligned and provided at substantially the same position as the opening 13a. Therefore, the opening 15a in which the second reflective layer 14 is not formed has a pattern that is substantially the same shape as the part in which the pattern layer 13 and the first reflective layer 12 are formed. The reflective layer 12 is provided so as to be aligned at substantially the same position.

Although it is desirable to use white ink for the second reflective layer 14, it is not limited to white ink as long as it has a light diffuse reflection effect. Although there is no restriction | limiting in thickness, when it is 5 micrometers-30 micrometers, a reflective effect will come out easily.
The light shielding layer 15 is provided on the second reflective layer 14 in the same shape as the second reflective layer 14 and aligned at the same position.
When the light source 16 is turned on, the light reflected by the first reflective layer 12 is re-reflected by the second reflective layer 14 and emerges to the viewer 17 side, and the pattern layer 13 and the first reflective layer. Indirect light leaking from the outer periphery of the layer 12 to the viewer 17 side can be observed.

  The thickness of the information display panels 7 and 18 is preferably in the range of 0.05 to 5 mm in order not to be restricted by the spatial design in the information display device housing.

  Various lamps (various bulb lamps, LED light sources) and surface light sources can be used as the light sources arranged on the back surfaces of the information display panels 7 and 18. In particular, the surface light source consisting of an edge light type light source and a light guide plate guides the light guided from a linear light source such as a cold cathode tube into the light guide plate such as acrylic to the entire surface of the light guide plate using total reflection in the light guide plate. By using the fact that the light hitting the reflection dots attached by the light changes its path and the light with an angle smaller than the total reflection angle emerges from the surface of the light guide plate, the entire surface of the light guide plate can be illuminated uniformly. It is a thing. When such a surface light source is used as a light source disposed on the back surface of the information display panel, there is an advantage that the entire information display panel can be uniformly illuminated and is easily read by an observer.

FIG. 3 shows the case where there is a region where the first reflective layer 2 protrudes outside the left end and the lower end of the pattern layer 3, but the region where the first reflective layer 2 protrudes. May be on either side of the pattern layer 3.
For example, the pattern layer 3 in each area of the information display panel does not have an area where the first reflective layer 2 protrudes at the end near the center of the information display panel, and is closer to the peripheral edge of the information display panel. It may be set that there is a region where the first reflective layer 2 protrudes at the end. Alternatively, when incorporated in an information display device and mounted on a transport device, there is no area where the first reflective layer 2 protrudes at the end of the upper picture layer 3 and at the lower end of the picture layer 3 It may be set that there is a region where the first reflective layer 2 protrudes.

Example 1 of the present invention will be specifically described. FIG. 1 shows an embodiment of the information display panel 7 of the present invention.
A polycarbonate having a thickness of d is used as the light transmissive support 1, and a white ink first reflective layer 2 and a black ink pattern layer 3 are formed on one surface by screen printing, and the other surface is screen printed. A black ink shading layer 4 was formed at the reversal position. In this example, the first reflective layer 2 and the pattern layer 3 were formed in the shape of characters, and the light shielding layer 4 was formed as a background portion.

  With the above configuration, when the length of the outer periphery of the region where the first reflective layer 2 protrudes from the end of the pattern layer 3 is L1, and the length of the entire outer periphery of the pattern layer 3 is L0 (L1 / The value of L0) and the diameter of the smallest circle that can enclose the characters formed by the pattern layer 3 are R, and the width of the portion where the end of the first reflective layer 2 protrudes from the end of the pattern layer 3 Table 1 shows the results of evaluating the appearance of the information display panel 7 when the value of (L2 / R) is changed with the maximum value of L2 being L2.

At this time, the reflectance of the first reflective layer 2 (reflectance with respect to light having a wavelength of 380 to 780 nm, hereinafter the same) is 80%, the total light transmittance of the pattern layer 3 is 0%, and the total light of the light shielding layer 4 The transmittance is 0%, and the haze value of the light-transmitting support 1 is 98%. In the evaluation, an LED light source of 1000 cd / m ² was placed on the other surface side of the information display panel of the present invention and observed from a distance of 1 m.
The appearance of the information display panel 7 was evaluated in five stages of 1 to 5 by visual sensory evaluation for two items of the stereoscopic effect of the character and the appearance of the character (good = 5,..., Bad = 1). . Each evaluation is 3 or more and passed.

  From the results shown in Table 1, it can be seen that the value of (L1 / L0) needs to be 20% or more in order to obtain a sufficient stereoscopic effect of characters.

  It can also be confirmed that the value of (L2 / R) needs to be not less than 0.25% and not more than 5% in order to obtain a sufficient stereoscopic effect without impairing the appearance of the characters. That is, it can be seen that if L2 is too large, the appearance of the characters is impaired, although a stereoscopic effect appears.

  In the configuration of FIG. 1, when a character is formed in the pattern layer 3, the first reflective layer when the value of (L1 / L0) is 30% and the value of (L2 / R) is 0.35% The character portion, that is, the first reflection layer 2 when the parameters of the reflectance of 2, the total light transmittance of the pattern layer 3, the total light transmittance of the light shielding layer 4, and the haze value of the light transmissive support 1 are changed. Table 2 shows the results of evaluating the brightness of the outer periphery of the pattern layer 3, the appearance of indirect light, and the three-dimensional effect of characters.

In this evaluation, an LED light source of 1000 cd / m ² was placed on the other surface side of the information display panel 7 of the present invention and observed from a distance of 1 m. The appearance of the information display panel 7 is evaluated in five stages of 1 to 5 by visual sensory evaluation with respect to the following three items: brightness of the outer periphery of the character, appearance of indirect light at the outer periphery of the character, and three-dimensional effect of the character. (Good = 5,..., Bad = 1) Each evaluation is 3 or more, and the result is acceptable. The light transmissive support 1 having a haze value of 0% has a configuration in which the light transmissive support 1 does not include the light diffusion layer.

  From the results shown in Table 2, it can be confirmed that the reflectance of the first reflective layer 2 is required to be 60% or more in order to obtain sufficient brightness and luminance of indirect light at the outer periphery of the character. If the reflectance is less than 60%, the amount of light reflected by the first reflective layer 2 is small, and therefore, it is presumed that the amount of light leaking to the outer periphery of the character is small.

  From the results shown in Table 2, it can be confirmed that the total light transmittance of the pattern layer 3 must be 20% or less in order to obtain sufficient brightness and brightness of indirect light at the outer periphery of the character. If the total light transmittance exceeds 20%, the light shielding by the pattern layer 3 is insufficient, the light is transmitted, the contrast with the outer periphery of the character is lowered, and the evaluation of the indirect light appearance is estimated to be deteriorated. Is done.

  From the results shown in Table 2, the total light transmittance of the light shielding layer 4 must be 20% or less in order to obtain sufficient brightness at the outer periphery of the character and to improve the evaluation of the appearance of indirect light. Can be confirmed. When the total light transmittance exceeds 20%, light shielding by the light shielding layer 4 is insufficient, and light is transmitted from the entire background portion including the outer periphery of the character, and the contrast with the outer periphery of the character is lowered, so that indirect light appears. It is presumed that the evaluation will be worse.

  From the results shown in Table 2, it can be confirmed that as the haze value of the light transmissive support 1 increases, the evaluation of the brightness of the character outer peripheral portion and the appearance of indirect light improves. When the haze value is increased, it is presumed that diffused light emitted from the light-transmissive support 1 is added to light leaking from the first reflective layer 2.

  From the results shown in Table 2, it can be seen that the higher the evaluation of the appearance of indirect light, the better the evaluation of the stereoscopic effect of the characters. However, due to the shading effect of the characters themselves, a certain three-dimensional effect appears even if the evaluation of the appearance of indirect light is bad. It can be said that the stereoscopic effect of the characters is increased by the effect of indirect light.

  The light-transmissive support 1, the first reflective layer 2, the pattern layer 3, and the light-shielding layer 4 can produce a three-dimensional effect on the character, generate indirect light on the outer periphery of the character, and display with excellent design. We were able to.

  The information display panel produced in Example 1 was incorporated into an information display device and used for transportation equipment. The structure of the transportation equipment is generally used.

Example 2 of the present invention will be specifically described. FIG. 2 shows an embodiment of the information display panel 18 of the present invention.
A polycarbonate having a thickness of d is used as the light-transmitting support 1, and a first reflective layer 12 of white ink and a pattern layer 13 of black ink are formed on one surface by screen printing, and screen printing is performed on the other surface. Then, a second reflective layer 14 of white ink and a light-shielding layer 15 of black ink were formed at the positions reversed at. In this example, the first reflective layer 12 and the picture layer 13 were formed in the shape of letters, and the second reflective layer 14 and the light shielding layer 15 were formed as a background portion.

With the above configuration, when the length of the outer periphery of the region where the first reflective layer 12 protrudes from the end of the pattern layer 13 is L1, and the length of the entire outer periphery of the pattern layer 13 is L0 (L1 / The value of L0) and the diameter of the smallest circle that can surround the character formed by the picture layer 13 is R, and the width of the portion where the end of the first reflective layer 12 protrudes from the end of the picture layer 13 Table 3 shows the results of evaluating the appearance of the information display panel 18 when the value of (L2 / R) is changed when the maximum value of L2 is L2.

At this time, the reflectance of the first reflective layer 12 is 80%, the total light transmittance of the pattern layer 13 is 0%, the reflectance of the second reflective layer 14 is 60%, and the total light transmittance of the light shielding layer 15 is achieved. The rate is 0%, and the haze value of the light transmissive support 11 is 98%. In the evaluation, an LED light source of 1000 cd / m ² was placed on the other surface side of the information display panel of the present invention and observed from a distance of 1 m.
The appearance of the information display panel 7 was evaluated in five stages of 1 to 5 by visual sensory evaluation for two items of the stereoscopic effect of the character and the appearance of the character (good = 5,..., Bad = 1). . Each evaluation is 3 or more and passed.

  From the results shown in Table 3, it can be seen that the value of (L1 / L0) is required to be 20% or more in order to obtain a sufficient stereoscopic effect of characters.

  It can also be confirmed that the value of (L2 / R) needs to be not less than 0.25% and not more than 5% in order to obtain a sufficient stereoscopic effect without impairing the appearance of the characters. That is, it can be seen that if L2 is too large, the appearance of the characters is impaired, although a stereoscopic effect appears.

  In the configuration of FIG. 2, when the characters are formed on the pattern layer 13, the first reflective layer 12 when the value of (L1 / L0) is 30% and the value of (L2 / R) is 0.35%. When the parameters of the reflectance, the total light transmittance of the pattern layer 13, the reflectance of the second reflective layer 14, the total light transmittance of the light shielding layer 15, and the haze value of the light transmissive support 11 are changed, respectively. Table 4 shows the results of evaluating the brightness of the character portion, that is, the outer periphery of the first reflective layer 2 and the pattern layer 3, the appearance of indirect light, and the three-dimensional effect of the character.

In this evaluation, an LED light source of 1000 cd / m ² was placed on the other surface side of the information display panel 18 of the present invention and observed from a distance of 1 m. The appearance of the information display panel 18 is evaluated in five stages of 1 to 5 by visual sensory evaluation with respect to the following three items: brightness of the outer periphery of the character, appearance of indirect light at the outer periphery of the character, and stereoscopic effect of the character. (Good = 5, ... bad = 1). Each evaluation is 3 or more and passed. The light transmissive support 11 having a haze value of 0% has a configuration in which the light transmissive support 11 does not include the light diffusion layer.

  From the results shown in Table 4, it can be confirmed that the reflectance of the first reflective layer 12 is required to be 60% or more in order to obtain sufficient brightness and luminance of indirect light at the outer periphery of the character. If the reflectance is less than 60%, the amount of light reflected by the first reflective layer 12 is small, and therefore the amount of light leaking to the outer periphery of the character is estimated to be small.

  From the results shown in Table 4, it can be confirmed that the total light transmittance of the pattern layer 13 must be 20% or less in order to obtain sufficient brightness and brightness of indirect light at the outer periphery of the character. If the total light transmittance exceeds 20%, the light shielding by the pattern layer 13 is insufficient and the light is transmitted, so that the contrast with the outer periphery of the character is lowered and the evaluation of the indirect light appearance is estimated to be worse. Is done.

  From the results shown in Table 4, it can be confirmed that the reflectance of the second reflective layer 14 is required to be 40% or more in order to obtain sufficient brightness and brightness of indirect light at the outer periphery of the character. If the reflectance is less than 40%, the light reflected from the first reflective layer 12 and the light incident on the second reflective layer 14 cannot be sufficiently reflected, so that the amount of light at the outer periphery of the character is reduced and the indirect light is viewed. It is estimated that the evaluation of

  From the results shown in Table 4, the total light transmittance of the light shielding layer 15 must be 20% or less in order to obtain sufficient brightness at the outer periphery of the character and to improve the evaluation of the appearance of indirect light. Can be confirmed. When the total light transmittance exceeds 20%, light shielding by the light shielding layer 15 becomes insufficient, and light is transmitted from the entire background portion including the character outer peripheral portion, so that the contrast with the character outer peripheral portion is lowered and indirect light is seen. It is presumed that the evaluation will be worse.

  From the results shown in Table 4, it can be confirmed that as the haze value of the light transmissive support 11 increases, the evaluation of the brightness of the character outer peripheral portion and the appearance of indirect light improves. It is estimated that when the haze value is increased, diffused light emitted from the light-transmissive support 11 is added to light leaking from the first reflective layer 12.

  From the results shown in Table 4, it can be seen that the higher the evaluation of the appearance of indirect light, the better the evaluation of the stereoscopic effect of the characters. However, due to the shading effect of the characters themselves, a certain three-dimensional effect appears even if the evaluation of the appearance of indirect light is bad. It can be said that the stereoscopic effect of the characters is increased by the effect of indirect light.

By the light-transmissive support 11, the first reflective layer 12, the pattern layer 13, the second reflective layer 14 and the light shielding layer 15, it is possible to produce a three-dimensional character and generate indirect light on the outer periphery of the character. It was possible to display with excellent design.
The information display panel produced in Example 2 was incorporated into an information display device and used for transportation equipment. The structure of the transportation equipment is generally used.

DESCRIPTION OF SYMBOLS 1,11 Light-transmissive support body 2,12 1st reflection layer 14 2nd reflection layer 3,13 Picture layer
3a, 13a Pattern layer openings 4, 15 Light-shielding layer
4a, 15a Light-shielding layer openings 5, 16 Light source 6, 17 Observer 7, 18 Information display panel

Claims (13)

An information display panel illuminated from the back by a light source,
The information display panel comprises a light transmissive support, a first reflective layer, a picture layer, a light shielding layer,
A first reflective layer having a predetermined pattern is laminated on the surface on the observer side, which is one surface of the light transmissive support,
On the first reflective layer, a picture layer is laminated in a state where at least part of the first reflective layer overlaps,
A light-shielding layer having a predetermined pattern is laminated on the surface on the side where the light source, which is the other surface of the light-transmissive support, is disposed,
When the length of the entire outer periphery of the pattern layer is L0 and the outer periphery of the pattern layer in the region where the end of the first reflective layer protrudes from the end of the pattern layer is L1, (L1 / L0) × 100 = 15% or more of range,
The diameter of the smallest circle that can surround the pattern formed by the pattern layer or the pattern layer opening is R, and the width of the portion where the end of the first reflective layer 2 protrudes from the end of the pattern layer When the maximum value of L2 is L2, it is in the range of (L2 / R) × 100 = 0.25% to 5%,
The information display panel, wherein a pattern shape formed by the opening portion of the pattern layer and a pattern shape formed by the light shielding layer substantially overlap each other. An information display panel in which a second reflective layer is laminated between the light transmissive support and the light shielding layer, wherein the second reflective layer and the light shielding layer substantially overlap each other. The information display panel according to claim 1. An information display panel in which a second reflective layer is laminated between the light transmissive support and the light shielding layer, wherein the second reflective layer and at least a part of the light shielding layer overlap, The information display panel according to claim 1, wherein the second reflective layer and the light-shielding layer have at least a portion that does not overlap with the first reflective layer. Wherein the first information display panel according to any one of claims 1 to 3 reflectivity equal to or less than 98% 60% for light with a wavelength of 380~780nm the reflective layer. Information display panel according to any one of claims 1 to 4, wherein the total light transmittance of the pattern layer is 20% or less than 0%. Information display panel according to any one of claims 2 to 5, characterized in that the total light transmittance of the light-shielding layer is 20% or less than 0%. The second information display panel according to any one of claims 3 to 6 reflectance equal to or less than 98% 40% with respect to light having a wavelength of 380~780nm the reflective layer. The light-transmitting support is a resin selected from polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, polystyrene, methacryl / styrene copolymer or acrylonitrile / styrene copolymer. information display panel according to any one of claims 1 to 7,. Information display panel according to any one of claims 1 to 7 wherein the light transmissive support wherein the haze value is 92% or less of resin 12% or more. The light transmissive support includes a light transmissive layer and a light diffusion layer,
The light transmission layer is a resin of any one of polycarbonate, polypropylene, expanded polypropylene, polyethylene terephthalate, polymethyl methacrylate, acrylic, polystyrene, methacryl / styrene copolymer or acrylonitrile / styrene copolymer, and the light diffusion layer information display panel according to any one of claims 1 to 7, wherein the haze value is 92% or less of resin 12% or more. Information display panel according to any one of claims 1 to 10 the thickness of the light transmissive support is characterized in that in the range of 0.05 to 5 mm. 12. The information display panel according to claim 1 is disposed at least between an observer and a direct light source, and the other surface of the light transmissive support is disposed so as to face the direct light source. Transportation equipment characterized by that. The information display panel according to any one of claims 1 to 11 is disposed at least between an observer and a surface light source comprising an edge light type light source and a light guide plate, and the other surface of the light transmissive support is the surface of the light transmissive support. A transportation device arranged to face a surface light source.

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