JP2002067208A - Luminous reflection sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a luminous reflection sheet capable of being used as a safe material having excellent visibility and a thin structure even when a light is emitted or not emitted. SOLUTION: The luminous reflection sheet is obtained by directly coating a mixture of a light storage pigment of 41 to 150 wt.% with a transparent adhesive resin on an opaque sheet and superposing a retroreflective sheet having light transmission properties thereon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a luminous reflection sheet having excellent visibility, which can be attached to, for example, clothes or bags and used as a safety material regardless of whether it is exposed to light or not.

[0002]

2. Description of the Related Art Conventionally, sheet-shaped safety materials include:
For example, a retroreflective sheet in which spherical glass beads are arranged on a sheet, a retroreflective sheet in which prism-like fine irregularities are formed on one side of a sheet, and the like are generally widely known. However, these retroreflective sheets are capable of returning the light by being irradiated with light and improving the visibility. Naturally, the visibility in a place where no light is irradiated cannot be obtained.

In order to solve the problem, Japanese Patent Laid-Open No.
Although a light-storing reflection sheet as disclosed in Japanese Patent No. 127892 is invented, the present invention discloses a three-layer structure using a reflection sheet in order to amplify the light emission luminance of a light-transmitting light-storing sheet having a light-storing material. Therefore, the thickness is increased due to its structure, and a problem such as discomfort occurs when worn, especially when it is used in a large area such as clothing. Further, it takes time and effort to manufacture by stacking three layers.

[0004]

SUMMARY OF THE INVENTION Accordingly, the present invention solves these problems and has excellent visibility even when light is applied or not, and can be used in a large area such as clothing. An object of the present invention is to provide a luminous reflection sheet excellent in wearing feeling.

[0005]

According to the first aspect of the present invention, a luminous pigment is added to a transparent adhesive resin in a weight ratio of 41% to 150%.
% Is directly formed on an opaque sheet, and a light-transmitting retroreflective sheet is superimposed thereon.
The gist of the present invention is a phosphorescent reflection sheet comprising a two-layer sheet.

According to a second aspect of the invention, there is provided a luminous reflection sheet, wherein the opaque sheet according to the first aspect is white.

According to a third aspect of the present invention, in the luminous reflection sheet according to the first and second aspects, a partially opaque display portion is disposed on the surface of the retroreflection sheet portion. Make the sheet a gist.

According to a fourth aspect of the present invention, a fluorescent color is applied to at least one of the edge surface, the front surface of the retroreflective sheet portion, and the back surface of the phosphorescent reflection sheet according to the first and second aspects. The gist of the invention is a phosphorescent reflection sheet characterized by being arranged.

According to a fifth aspect of the present invention, there is provided a luminous reflection sheet according to the first and second aspects, wherein a translucent color is arranged on a front surface or a back surface of the retroreflection sheet portion. Make a summary.

According to a sixth aspect of the present invention, there is provided a luminous reflection sheet, wherein a new luminous portion is disposed on the back surface of the retroreflection sheet portion of the luminous reflection sheet according to the first and second aspects. And

According to a seventh aspect of the present invention, there is provided a luminous reflecting sheet according to the first and second aspects, wherein a new transparent portion is provided on the back surface of the retroreflective sheet portion. And

According to an eighth aspect of the present invention, there is provided a luminous reflecting sheet, wherein the surface of the retroreflective sheet portion of the luminous reflecting sheet according to the first and second aspects is partially subjected to thermocompression bonding. Make a summary.

According to a ninth aspect of the present invention, there is provided a luminous reflecting sheet according to the first and second aspects, wherein the luminous reflecting sheet comprises a combination of at least two of the third to eighth aspects. Make a summary.

According to a tenth aspect of the present invention, a phosphorescent pigment mixed with a transparent adhesive resin at a weight ratio of 41% to 150% is directly applied and formed on an opaque sheet, and has a light transmitting property thereon. The gist of the present invention is a luminous reflection sheet comprising a four-layer sheet in which a retroreflective sheet is stacked, and an elastic sheet and a sheet for suppressing the resilience are stacked on the lower surface of the opaque sheet.

According to an eleventh aspect of the present invention, there is provided a luminous reflection sheet, wherein the opaque sheet according to the tenth aspect is white.

According to a twelfth aspect of the present invention, the luminous reflection sheet according to the tenth and eleventh aspects has the function of at least one of the third to eighth aspects. Make the sheet a gist.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the phosphorescent reflecting sheet according to the first aspect,
First, a phosphorescent sheet serving as a lower layer is obtained by directly applying and forming a phosphorescent pigment mixed with a transparent adhesive resin at a weight ratio of 41% to 150% on an opaque sheet.

This weight ratio is found as an optimum amount for forming a dense luminous pigment film without dispersing the luminous pigment as in the conventional luminous sheet. When the luminous pigment emits light, the luminous sheet has an interference with each other and is amplified, so that the luminous sheet is a high-luminance luminous type luminous sheet.

Incidentally, the emission luminance of the phosphorescent pigment was 41% by weight with respect to the transparent resin, even if the weight ratio was 41%.
As disclosed in Japanese Unexamined Patent Publication (Kokai) No. HEI-7-260, the phosphorescent light emission luminance of a three-layer structure phosphorescent reflection sheet also having a reflection sheet for reflecting light has the same light emission luminance, and the light emission luminance increases as the weight ratio increases. Go.

However, the maximum weight ratio of the luminous pigment that can be mixed with the transparent adhesive resin is up to 150%. Not only does this not change, but also the adhesion of the phosphorescent pigment to the opaque sheet becomes weak, which is not preferable.

The optimum weight ratio of the phosphorescent reflecting sheet excellent in visibility originally intended in the present invention is such that the phosphorescent pigment is 50% or more and 120% or less with respect to the transparent adhesive resin, preferably,
The range is from 80% to 100%.

The translucent retroreflective sheet as the upper layer has a reflection function of reflecting light incident from the surface in the incident direction again, and has a high luminance having a dense phosphorescent pigment film as the lower layer. It also has the function of allowing light to reach the light emitting type phosphorescent sheet.

Therefore, the light storing / reflecting sheet composed of the two-layer sheet obtained by superimposing the lower layer and the upper layer in the above-described configuration can be viewed by the light reflected by the upper retroreflective sheet when the light is applied to the light storing / reflecting sheet. In addition, even if the light stops being applied, the light emitted from the high-brightness light-emitting type light storage sheet that has stored light when the lower layer has been hit makes the light storage reflection sheet excellent in visibility. Not only that, because of the two-layer structure,
Even if it is used for a large area in clothing and the like, it does not cause discomfort.

In the luminous reflection sheet according to the second aspect, by making the opaque sheet white, the luminous luminance of the high-luminance luminous type luminous sheet having a dense luminous pigment film is further increased, and the visibility is further improved. it can.

According to the third aspect of the present invention, the display section is formed of a partially opaque ink or a sheet on the surface of the retroreflective sheet constituting the upper layer. Therefore, when light hits the retroreflective sheet, the display portion cannot reflect light, so that the contrast is increased and the visibility of the display portion becomes clear.

In the light storing / reflecting sheet according to the fourth aspect, a fluorescent color is arranged on the edge surface or the front and back surfaces of the retroreflective sheet. Therefore, visibility can be improved by reflected light of the retroreflective sheet when light is applied, emitted light of the phosphorescent sheet when light is not applied, and by fluorescent color in ordinary daylight.

In the phosphorescent reflecting sheet according to the fifth aspect, a translucent color is arranged on the front surface or the back surface of the retroreflective sheet constituting the upper layer. This is generally called halftone, and can transmit light while being color. Therefore, when arranged on the surface of the retroreflective sheet, the reflected light is colored, and in addition to being able to improve the visibility as colored light, when arranged on the back surface, by the radiation emitted from the lower phosphorescent sheet, Similarly, visibility can be improved as colored light.

In the light-storing reflection sheet according to the sixth aspect, a light-storing portion is newly provided on the back surface of the retroreflective sheet constituting the upper layer. Therefore, the radiated light is amplified by the radiated light radiated from the lower luminous sheet and the radiated light of the newly-stored luminous portion, so that the visibility can be further improved. In addition, by disposing it on the back surface, it becomes possible to prevent contamination of the light storing portion.

In the phosphorescent reflecting sheet according to the seventh aspect, a transparent portion is newly provided on the back surface of the retroreflective sheet constituting the upper layer. Therefore, from the place where the transparent portion is provided, the radiation of the lower phosphorescent sheet passes straight through to the surface of the retroreflective sheet, so that the visibility can be improved.

In the luminous reflection sheet according to the eighth aspect, the surface of the retroreflection sheet constituting the upper layer is partially subjected to thermocompression bonding. Therefore, in the portion where the thermocompression bonding is performed, the retroreflective sheet and the lower phosphorescent sheet are integrated, and the emitted light of the lower phosphorescent sheet comes out as it is, so that the visibility can be improved.

In the luminous reflection sheet according to the ninth aspect, the luminous reflection sheet according to the first aspect is provided.
Further, at least two or more of the third to eighth aspects are combined with the phosphorescent reflection sheet of the second aspect. Therefore, a desired phosphorescent reflection sheet can be obtained in accordance with the use conditions.

In the luminous reflection sheet according to the tenth aspect, a sheet having a new elasticity and a sheet for suppressing the resilience thereof are further placed below the opaque sheet of the luminous reflection sheet having the structure according to the first aspect. I have. Therefore, the surface of the retroreflective sheet constituting the upper layer has a three-dimensional, semi-cylindrical shape, so that not only the front surface of the phosphorescent sheet but also the oblique visibility can be improved.

In the luminous reflection sheet according to the eleventh aspect, by making the opaque sheet according to the tenth aspect white, the luminous luminance of a high-luminance luminous type luminous sheet having a dense luminous pigment film is further increased, and visibility is further improved. Can be improved.

According to the luminous reflection sheet of the twelfth aspect, the luminous reflection sheets of the tenth and eleventh aspects are the same as those of the third to third aspects.
At least one or more of the eighth aspect is combined. Therefore, a desired phosphorescent reflection sheet can be obtained in accordance with the use conditions.

[0035]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the phosphorescent reflection sheet of the present invention will be described below in more detail with reference to the drawings. However, the present invention is not limited to the embodiments and does not depart from the technical scope of the present invention. Needless to say, the present invention can be implemented by various materials and methods.

[Embodiment 1] FIG. 1 is a sectional view of a phosphorescent reflecting sheet of the present invention. This light-storing reflection sheet is provided with a dense light-storing pigment film 1a on an opaque sheet 1, on which a light-transmitting retroreflective sheet 2 is superimposed, and an adhesive portion 3 is provided therearound.

The opaque sheet 1 has a thickness of 0.2 mm to
0.3mm flexible white vinyl chloride sheet. The dense luminous pigment film 1a is made of vinyl ink medium manufactured by Jujo Kako Co., Ltd. as a transparent adhesive resin. A mixture containing 80% by weight of Pigment N luminous material was directly applied and formed by screen printing.

The light-transmissive retroreflective sheet 2 is made of transparent vinyl chloride having a thickness of 0.3 to 0.4 mm and has a flat surface and a prism-shaped fine surface on the rear surface. A retroreflective sheet and a microprism sheet, on which various irregularities 2a are formed, are used.

The bonding portion 3 for bonding these components is
Thermal bonding using a welding machine.

In the light storing / reflecting sheet, most of the incident light 4 entering from the surface of the retroreflective sheet 2 is reflected in the incident direction by the prismatic irregularities 2a on the back surface.
Some of the light is transmitted from the transparent portion as transmitted light 5 and reaches the dense luminous pigment film 1a on the opaque sheet 1.

Then, the dense luminous pigment film 1a starts storing the transmitted light 5 and produces high-luminance radiated light by itself.

Therefore, by these actions, when light is applied, the visibility is improved by the reflection of the retroreflective sheet, and even when the light is not applied, the visibility is increased by the high-luminance radiation from the dense phosphorescent pigment film. Can be improved.

[Embodiment 2] FIG. 2 (a) shows the same luminous reflection sheet as that of Embodiment 1 on the surface of the retroreflective sheet 2 using screen ink commonly used for screen printing, and forming an opaque display section 2b with alphabets. FIG. 3 is a cross-sectional view in which A is printed. FIG. 2B is a front view thereof.

The opaque display section 2b completely blocks the incident light 4 entering from the surface of the retroreflective sheet 2, so that
No reflection effect occurs. Therefore, the contrast between the reflected portion and the non-reflected portion on the surface of the retroreflective sheet 2 increases, and the visibility of the display portion 2b becomes clear.

[Embodiment 3] FIG. 3 (a) shows a phosphor-reflective sheet similar to that of Embodiment 1 on the edge of the retroreflective sheet 2 using fluorescent ink by screen printing to form a fluorescent color line-shaped box 2.
It is sectional drawing which printed c. FIG. 3B is a front view thereof.

The fluorescent colored line-shaped box 2c has a fluorescent color portion that stands out even in ordinary daylight, so that it is added to the reflected light of the reflective sheet and the radiated light of the phosphorescent sheet to further enhance visibility. Can be improved.

[Embodiment 4] FIG. 4A shows an alphabet B composed of a translucent color 2d on a surface of a retroreflective sheet 2 of a luminous reflection sheet similar to that of Embodiment 1 by screen printing using halftone ink. It is the printed sectional view. FIG. 4B is a front view thereof.

The semi-transparent color 2d colors the reflected light when the incident light 4 incident from the surface of the retroreflective sheet 2 is reflected in the incident direction by the prismatic irregularities 2a on the back surface. Therefore, the reflected light reflected from the retroreflective sheet 2 is not monochromatic, and the visibility can be further improved.

[Embodiment 5] FIG. 5 (a) shows an alphabet C composed of a translucent color 2d on a back surface of a retroreflective sheet 2 of a luminous reflection sheet similar to that of the embodiment 1 by screen printing using halftone ink. It is the printed sectional view. FIG. 5B is a front view thereof.

The translucent color 2d colors the emitted light when the dense luminous pigment film 1a on the opaque sheet 1 emits light and exits the surface of the retroreflective sheet 2. Therefore, the light that can be confirmed on the surface of the retroreflective sheet 2 is not monochromatic, and the visibility can be further improved.

[Embodiment 6] FIG. 6 (a) shows an alphabet D composed of a luminous color 2e printed on the back surface of a retroreflective sheet 2 of a luminous reflective sheet similar to that of Example 1 by screen printing using luminous ink. It is sectional drawing. FIG. 6 (b)
Is a front view thereof.

The luminous color 2e is a feature of the present invention.
The luminous pigment is at least 41% by weight based on the transparent adhesive resin and 1
It is desirable to use the same thing that is mixed at 50% or less, and the dense phosphorescent pigment film 1a on the opaque sheet 1 is used.
Simultaneously emits light, the luminous color 2e on the back surface of the retroreflective sheet 2 also emits light, so that the emitted light is amplified and the visibility can be further improved.

[Embodiment 7] FIG. 7 (a) shows a letter E composed of a transparent color 2f printed on the back surface of the retroreflective sheet 2 of the luminous reflection sheet similar to that of the embodiment 1 by screen printing. It is sectional drawing. FIG. 7B is a front view thereof.

By forming this transparent color 2f on the back surface of the retroreflective sheet 2, the formed portion becomes completely transparent. Therefore, the dense phosphorescent pigment film 1 on the opaque sheet 1
When a emits light and exits from the surface of the retroreflective sheet 2, the emitted light passes straight through and emerges,
The visibility can be further improved.

[Embodiment 8] FIG. 8 (a) shows the surface of the retroreflective sheet 2 of the same phosphorescent reflecting sheet as in Embodiment 1 which is subjected to thermocompression bonding using a welder processing machine, and the alphabet consisting of a crimped portion 2g is formed. It is sectional drawing in which F was formed. FIG.
(B) is a front view thereof.

The press-bonded portion 2g is tightly integrated with the dense luminous pigment film 1a on the opaque sheet 1 by thermocompressing the surface of the retroreflective sheet 2 to form the radiation radiated from the dense luminous pigment film 1a. Since the light comes out as it is, the visibility can be further improved.

[Embodiment 9] FIG. 9 shows a sheet 7 having elasticity on the lower surface of the opaque sheet 1 of the luminous reflection sheet similar to that of the embodiment 1 and a sheet 7 on the lower surface for suppressing resilience.
It is sectional drawing of the light storage reflection sheet provided with.

The newly formed elastic sheet 6
Is a sponge-like sheet 7 for suppressing repulsion.
Is a 0.5 mm thick flexible vinyl chloride sheet.

The bonding portion 3 for bonding these components is
Similarly, thermal bonding using a welding machine.

In the above-mentioned phosphorescent reflecting sheet, the sheet 6 having elasticity is sandwiched between the opaque sheet 1 and the sheet 7 for suppressing resilience, so that the surface of the retroreflective sheet 2 constituting the upper layer becomes a three-dimensional kamaboko type. Since the incident light 4 incident from the surface can be taken in from a wide angle, naturally, the reflected light is also reflected at a wide angle, and the visibility can be further improved.

[0061]

As described above in detail, the phosphorescent reflecting sheet of the present invention is thin in structure and can be used as a safety material having excellent visibility regardless of whether light is applied or not.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a phosphorescent reflection sheet according to an embodiment of the present invention.

FIG. 2 is a luminous reflection sheet having an opaque display section,
(A) is a sectional view, and (b) is a front view.

FIG. 3 is a phosphorescent reflection sheet having a fluorescent color, wherein (a) is a sectional view and (b) is a front view.

FIG. 4 shows a phosphorescent reflecting sheet having a translucent color, wherein (a)
Is a sectional view, and (b) is a front view.

FIG. 5 is a luminous reflection sheet having a translucent color, wherein (a)
Is a sectional view, and (b) is a front view.

FIG. 6 is a luminous reflection sheet having a luminous part, wherein (a)
Is a sectional view, and (b) is a front view.

FIG. 7 shows a phosphorescent reflection sheet having a transparent portion, wherein (a)
Is a sectional view, and (b) is a front view.

FIG. 8 is a phosphorescent reflection sheet partially subjected to thermocompression bonding.
(A) is a sectional view, and (b) is a front view.

FIG. 9 is a cross-sectional view of a luminous reflection sheet in which a two-layer sheet is newly formed under the luminous reflection sheet according to the embodiment of the present invention to form a four-layer sheet.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Opaque sheet 1a Luminescent pigment film 2 Retroreflective sheet 2a Prism-shaped uneven part 2b Opaque display part 2c Line of fluorescent color 2d Translucent color 2e Luminescent color 2f Transparent color 2g Crimping part 3 Adhesive part 4 Incident light 5 Transmission Light 6 Resilient sheet 7 Resilient sheet

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09F 13/16 G09F 13/16 F 13/20 13/20 D (72) Inventor Minoru Shiramizu Kasuga, Fukuoka 9-40 Otani Citipal Kasuga Center 1315 F-term (reference) 2D064 AA00 AA22 BA00 CA02 CA03 DA05 DA06 DA08 EA03 EB22 EB31 2H042 EA01 EA12 EA13 EA15 4F100 AK01A AK15A AK15C AR00B AR00C BA03B07BA10 BA07 BA10 GB07BA10 BA07B10B07B10C JN01A JN02B JN06 JN30A JN30B JN30C 5C096 AA01 AA06 AA15 AA22 BA03 BA04 BB23 BB34 BB39 CA02 CA03 CA12 CA13 CA15 CA25 CA29 CA32 CA33 CB07 CE03 CE12 CE25 CE29 CF04 EA03 EB02 EB18 FA14

Claims (12)

[Claims] 1. A method in which a phosphorescent pigment mixed with a transparent adhesive resin in a weight ratio of 41% to 150% is directly applied and formed on an opaque sheet, and a light-transmitting retroreflective sheet is laminated thereon. And a phosphorescent reflection sheet comprising a two-layer sheet. 2. A luminous reflection sheet according to claim 1, wherein said opaque sheet is white. 3. A luminous reflection sheet according to claim 1, wherein a partially opaque display portion is disposed on the surface of the retroreflection sheet portion of the luminous reflection sheet according to claim 1. 4. The phosphorescent reflecting sheet according to claim 1 or 2, wherein a fluorescent color is disposed on at least one of the edge surface, the front surface of the retroreflective sheet portion, and the back surface. Phosphorescent reflection sheet. 5. A luminous reflection sheet according to claim 1, wherein a translucent color is arranged on a front surface or a back surface of the retroreflection sheet portion of the luminous reflection sheet according to claim 1 or 2. 6. A light-storing reflection sheet, characterized in that a new light-storing portion is arranged on the back surface of the retroreflection sheet portion of the light-storing reflection sheet according to claim 1 or 2. 7. A phosphorescent reflecting sheet according to claim 1, wherein a new transparent portion is provided on the back surface of the retroreflective sheet portion of the phosphorescent reflecting sheet according to claim 1. 8. A luminous reflection sheet, wherein the surface of the retroreflection sheet portion of the luminous reflection sheet according to claim 1 or 2 is partially subjected to thermocompression bonding. 9. A luminous reflection sheet according to claim 1, wherein said luminous reflection sheet comprises a combination of at least two of said luminous reflection sheets. 10. A method in which a phosphorescent pigment mixed with a transparent adhesive resin in a weight ratio of 41% to 150% is directly applied and formed on an opaque sheet, and a translucent retroreflective sheet is laminated thereon. A luminous reflection sheet comprising a four-layer sheet in which an elastic sheet is provided on the lower surface of the opaque sheet and a sheet for suppressing the resilience of the sheet is laminated. 11. A luminous reflection sheet according to claim 10, wherein said opaque sheet is white. 12. The luminous reflection sheet according to claim 10 and claim 11, wherein at least one of claim 3 to claim 8 is provided.
A luminous reflection sheet characterized in that it has a function not less than the term.