JP2013101339A - Luminous body in which luminous plate and transparent color fluorescent plate are laminated - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display panel such as a signpost, a display board, and a warning board, which can be viewed for a long time and can express a variety of colors.SOLUTION: There is provided a display panel in which a plate 6 using a luminescent agent 1 and a transparent color fluorescent plate 3 are laminated, and a reflection layer 2 is provided on a surface opposed to the luminescent agent 1. In the daytime, characters, patterns and the like provided as the reflection layer are dyed to be increased in brightness and saturation or to be mixed in color and can be clearly viewed, by respective fluorescent coloring excited in the transparent color fluorescent plate provided on a top side by natural light or illumination light. In the dark, the characters, patterns and the like provided as the reflected layer are dyed or mixed in color to be red, orange and the like and can be viewed for a long time, by respective fluorescent coloring excited in the transparent color fluorescent plate by receiving an afterglow excited and emitted by natural light or illumination light transmitted through the transparent color fluorescent plate in the daytime.

Description

The invention of the present application is a phosphorescent plate (Fig. 1, Fig. 2, Fig. 3, symbol 6) coated with an alkaline earth metal aluminate phosphorescent agent that has been developed in recent years and emits high brightness and long afterglow with no power. , Orange, green and other transparent color fluorescent plates (FIG. 1, FIG. 2, FIG. 3 reference numeral 3) are superposed, and a light emitting layer (FIG. 1, FIG. 1) forms a reflective layer with letters, designs, pictograms, etc. on the fluorescent plate surface facing the phosphorescent plate. The present invention relates to an invention of a color illuminator which is a multilayer display panel provided with FIG. 2 and FIG.

JP-A-1-225986 Japanese Patent Laid-Open No. 9-288462 JP 2001-3046 A WO98 / 57316

According to Patent Document 1, for the purpose of providing a fluorescent display plate with a noticeable character or symbol that is conspicuous even under bright sunlight or a dimly lit security light, and with a simple structure, a transparent resin mixed with an organic fluorescent dye is used. A display panel is used, and a V-shaped groove having a V-shaped cross section of 30 to 70 degrees is provided on the back surface of the display panel, and a display character or symbol is formed by the V-shaped groove to constitute a display panel. As shown in other embodiments of the fluorescent display board, the displayed characters and symbols are conspicuous even under bright sunlight and dimly lit security lights.
When a V-groove formed of a transparent resin mixed with an organic fluorescent dye different from the display panel is formed in the V-shaped groove 6 provided on the back surface of the display panel and forming a display character or symbol, the V-shaped groove is formed. It is formed by a method such as injection molding, and the display character or symbol is made clear by changing the color of the displayed character or symbol from the background color, or the display character or symbol formed on the same fluorescent display board is multicolored Is possible.

According to Patent Document 3, claim 6 and paragraph 0010 describe a combination with a phosphorescent paint.
In the paragraph 0018, the light reflected from the fluorescent material in the transparent resin flat plate and the light generated in the fluorescent material in the transparent resin flat plate are reflected from the phosphorescent reflecting plate coated with the phosphorescent paint on the surface facing the fluorescent light collecting plate. The light received and stored in the phosphorescent reflecting plate is applied to the entire surface of the phosphorescent reflecting plate to increase the amount of light emitted from the display unit, and is a description of the effect in the daytime.

According to Patent Document 3, the guidance direction arrow plate of the embodiment is such that the outer phosphorescent plate emits light around the blue or green plate at night, and the inner central light-collecting fluorescent plate is red, yellow, orange or uneven color. It emits light in the shape of an arrow frame and vividly displays the guidance direction such as emergency escape at night in two colors. The structure is a structure in which scattered light excited from the edge of the plate is taken out to visually recognize the color development.

According to Patent Literature 4, a fluorescent material and a phosphorescent material are driven or fitted into a base material containing at least an inorganic material or a resin as a constituent component whose color tone is controlled. It is possible to provide an internal / external material that can be modulated into three hues of a light emission color due to UV light and a light emission color due to a fluorescent agent accompanying ultraviolet irradiation.

  Alkaline earth metal aluminate phosphors developed in recent years are superior in weather resistance, water resistance and heat resistance compared to conventional sulfur-based phosphorescent agents, and have high functions such as high brightness, long afterglow and high weather resistance. Have. However, since the excitation color of the phosphorescent agent was limited to cold colors such as green, blue, purple, and blue green, the light emission visibility in the dark was monotonous when considering applications such as display boards, signs, and display panels. . In addition, it was milky white in the daytime, and it was difficult to obtain human-stimulating red, orange, and yellow colors, and it was impossible to combine colors, and various colors could not be expressed.

In Patent Document 1, the display object made of a V-shaped groove provided on the fluorescent plate is improved in luminance and saturation by sunlight and emitted fluorescent light excited by illumination light. There is no description of the structure and effect in the dark by the phosphorescent agent excitation.

Patent Document 2 describes the structure and effect that the reflecting plate display unit is dyed and mixed with the excitation and collection of the fluorescent agent by light emission of the phosphorescent agent, which is an effect in the dark, and the resulting concentrated scattered light. There is no.

In Patent Document 3, the color is developed at the edge, and the structure / effect is different from the visual recognition of the color of the reflector provided as the display portion.

In Patent Document 4, there is no description of the light guide action and concentration by the fluorescent plate, and the structure and effect of irradiation by the reflection plate provided as the display portion.

In order to solve the above-mentioned problems, in claim 1, a transparent color fluorescent screen (refer to FIG. 1, FIG. 2, FIG. 3) provided on the front side by natural light, illumination light, and phosphorescent light emission in the daytime. 3) Each color fluorescence excited inside 3) is repeatedly totally reflected and led to the end face exit surface, partially reflected at the end face exit surface, concentrated and concentrated inside the transparent color phosphor plate, and the exit layer (FIG. 1). 2 and 3) 2) Dyeing letters, designs, pictograms, etc. provided by paint, vinyl tape, paper adhesive, and increasing or mixing brightness and saturation, and can be clearly seen from the front.

In the dark, natural light transmitted through the transparent color fluorescent plate and light storage agent excited by the illumination light (Fig. 1, Fig. 2, Fig. 3 reference numeral 1) emit light, receive the stored light emission, and inside the color transparent fluorescent plate Due to the color fluorescence generated by each of the colors, the letters, designs, pictograms, etc. that form the reflective layer provided as the output layer are dyed or mixed by the same mechanism as in the daytime, and the color is brighter than the front surface. Can be recognized visually,

In claim 2, an end face reflecting layer (reference numeral 4 in FIGS. 1, 2 and 3) is provided in claim 1, and the same mechanism as in claim 1 is used to increase or mix luminance and saturation, and in the daytime. The emission layer is clearly visible from the front surface,

In claim 3, the exit layer of claim 1 or 2 is made concave by engraving, paint is applied to the exit layer, or vinyl tape or paper is adhered to form an exit layer, and the outer edge is exited by a step. It can be used as a color light-emitting sign, display board, warning board, sign, etc. The present invention relates to an invention of a color light emitting laminated panel that can be manufactured.

Here, the afterglow spectrum of the phosphorescent agent is approximately 480 nm to 610 nm for green light emission and 450 nm to 590 nm for blue green light emission, and crosses the excitation light region of the transparent color fluorescent plate in the vicinity of 450 nm to 550 nm. .

The alkaline earth metal aluminate phosphorescent agent is a compound represented by the chemical formula MAl2O4, where M is magnesium (Mg), calcium (Ca), strontium (Sr), titanium (Ti), yttrium (Y), There are nickel (Ni), aluminum (Al), silicon (Si), and the like, and one or more elements selected from these are used.

In addition, examples of the metal element constituting the activator of the phosphorescent phosphor include europium (Eu), terbium (Tb), dysprosium (Dy), erbium (Er), ytterbium (Yb), and the like. One or more selected elements are used.

Further, a phosphorescent phosphor Sr4Al14O25: Eu, Dy represented by the following chemical formula can also be used.

Here, a phosphorescent sheet containing a phosphorescent agent, a phosphorescent resin, a phosphorescent paper, a phosphorescent artificial marble, a phosphorescent tile, a phosphorescent porcelain, a phosphorescent cloth, and the like can be used instead of the plate coated with the phosphorescent agent slurry.
As the transparent color fluorescent plate, it is desirable to use an acrylic fluorescent plate or a light collecting plate having high transparency (total light transmittance of 50% or more is desirable) and high light guide action, but the transparency, polycarbonate, polypropylene, polyethylene, It is also possible to use resins such as vinyl chloride and silicon.

In the present invention, various combinations of tests and measurements were performed. Test materials and measurement results are shown below.
Material 1. Transparent pink fluorescent plate Manufacturer Sumitomo Chemical Model 451 Size 160 × 60 × 3 mm Total light transmittance 85%
2. Transparent orange fluorescent plate Manufacturer Kanase Kogyo Model No. 9089L Size 160 × 60 × 3 mm Total light transmittance 78.7%
3. Phosphorescent material size 56 × 156 × 2 mm G-300L160 manufactured by Nemoto Lumimaterial
Green emission peak particle size 150 microns
56 × 156 × 2 mm Easy Bright EZCAB150
Blue green light emission Peak particle size 150 microns

  1 and 3 or 2 and 3 are combined to create a laminated panel as shown in FIGS. 1, 2 and 3, and lacquer paint white, yellow and red are applied as a reflective layer, or vinyl tape white, red, Yellow was applied and the chromaticity was measured with a spectrophotometer.

The XYZ color system chromaticity coordinates are 1. As a result, a bright pink color x 0.395 y 0.2448 was obtained immediately after light emission. Structure Reflective layer enamel lacquer white, coating size 8 x 28 mm.
2. As a result, a bright orange color x 0.4174 y 0.4423 was obtained immediately after light emission. Structure Reflective layer enamel lacquer white, coating size 8 x 28 mm.
2. A bright yellow color x 0.4256 y 0.4727 was obtained immediately after light emission. Structure Reflective layer enamel lacquer yellow, coating size 8 x 28 mm.

In addition, color development can be visually recognized for a long time in a dark box as compared with the sulfur-based phosphorescent agent of about 4 hours.

In addition, almost the same excitation color can be measured for both green and blue green colors, and the phosphorescent light emitting part other than the exit surface looks yellow-green for green emission and purple for blue-green type due to the filter effect of the color transparent plate. It was visible as a strong color.

Here, the reflective layer serving as the object to be marked was slightly wide due to the measuring machine, and was 8 × 28 mm. As the reflective layer, a highly light-shielding paint, enamel lacquer white, yellow, and red were used. Here, a vinyl tape, paint, or the like can be adhered or painted on the reflective layer. In this case, there is a correlation that the saturation decreases and the luminance increases due to the light transmission through the phosphorescent plate. Alternatively, the color mixing phenomenon occurs due to the effect of the luminous color of the phosphorescent agent.
Further, enamel lacquer white was applied to the outer edge of the transparent fluorescent plate to provide a reflective layer.

  As shown in FIG. 3, a transparent color fluorescent plate code 3 is laminated on a phosphorescent plate code 1 coated with a slurry obtained by kneading a phosphorescent pigment having a peak particle diameter of 150 microns and an acrylic lacquer to a volume ratio of about 1: 3. Characters, designs, pictograms, etc. are provided as engraving grooves as reflective layer code 5 on the surface facing the surface, and colored with paint.

In the daytime, the fluorescent agent in the transparent color fluorescent plate is excited by natural light, illumination light, and luminous agent light emission, and the scattered light is repeatedly totally reflected and led to the edge of the plate and totally reflected by the reflective layer. All the emitted light is condensed and concentrated, and the reflecting surface provided on the surface facing the phosphorescent agent is dyed and emitted. By coloring letters, designs, pictograms, etc., it becomes a color light emitting label that can visually recognize colors vividly from the upper surface of the transparent color fluorescent plate.

At night, the fluorescent agent in the transparent color fluorescent plate is excited by the luminous agent light emission excited by receiving natural light and illumination light in the daytime, and emitted by the same mechanism as in the daytime. In the nighttime, the phosphorescent light emission that does not stain letters, design surfaces, pictograms, etc. has a transparent color fluorescent plate that acts as a spectral filter. The contrast is produced.

The afterglow luminance of the luminous agent light emitting unit code 1 must be maintained for a long time enough to excite the fluorescent agent. In general, it is said that the larger the particle size, the longer the luminance and the afterglow time, and the phosphorescent agent pigment is selected from commercially available phosphorescent agents having a peak particle size of 150 microns. The phosphorescent pigment powder and acrylic lacquer were kneaded in a volume ratio of about 1: 3 to form a slurry, which was coated and dried to obtain a phosphorescent plate.

Further, it is said that the luminance is higher when the phosphorescent layer is thicker. In the present invention, a concave surface having a length of 56 × width of 156 × depth of 2 mm is prepared and poured into the slurry so that the thickness of the phosphorescent agent layer is 2 mm. When the slurry is applied so as to rise slightly from the groove due to surface tension, the thickness after drying becomes uniform and the light emitting surface becomes uniform. In brightness measurement by a public organization, BZCAB150 manufactured by Easy Bright Co., Ltd. is 950 millicandela after 1 minute emission, 70 millicandela after 60 minutes, 30 millicandela after 120 minutes, 20 millicandela after 180 minutes, 12.2 millicandela after 300 minutes, After 420 minutes, it was 8.2 millicandela, and after 600 minutes, it was 5.4 millicandela.
Nemoto Lumi Material Co. G-300L160 are described afterglow luminance of accompanying inspection report measurement results by the 10 minutes after 466mcd ^/ m 2, after 20 minutes 255mcd ^/ m 2, 60 minutes after 75mcd / ^{m 2} Regarding the afterglow luminance comparison with BZCAB150 after 4 hours and 10 hours by visual observation, a slight difference in saturation was observed, but a large difference was not observed.

Further, it is said that a transparent color fluorescent plate is brighter in color when it is large. According to the present invention, a phosphorescent plate of 226 × 111 × 2 mm depth is manufactured and the transparent color fluorescent plate is formed according to claim 3. Laminated color light emitters were manufactured and compared by visual observation, but a clear improvement in saturation was observed.

Here, when the mixing ratio of the phosphorescent pigment and the clear lacquer is small, a good slurry with good elongation cannot be obtained, and there is a problem that a good flat surface that does not reach the details cannot be obtained.
If the mixing ratio is large, the phosphorescent agent has a large specific gravity of about 3.6, which causes precipitation and separation before drying and solidification, and also increases the time to drying, which increases the labor for construction.

1. Transparent color fluorescent plate Transparent pink fluorescent plate Manufacturer Sumitomo Chemical Model 451 Size 160 × 60 × 3 mm Total light transmittance 85%
2. Transparent orange fluorescent plate Manufacturer Kanase Kogyo Model No. 9089L Size 160 × 60 × 3 mm Total light transmittance 78.7%
3. Transparent green fluorescent plate Manufacturer Mitsubishi Rayon Model 993 Size 160 × 60 × 3mm Total light transmittance 92%
The experiment was conducted using

The reflective layer used as a sign was set with a width of 15 mm as the limit. This is because, in areas larger than this, scattered light does not spread sufficiently, and the brightness and saturation of the central portion decrease.
If the thickness of the fluorescent plate is larger than 3 mm, such a problem is solved, but the transmittance is lowered, phosphorescence is prevented, and the cost is increased.

The display portion provided on the transparent color fluorescent plate of Example 1 is printed or painted with white paint without providing a concave surface. No reflective layers are provided at the four corners of the transparent color fluorescent plate.

  The display portion provided on the transparent color fluorescent plate of Example 2 is red, yellow, or mixed color to make pink and light yellow.

  The display portion provided on the transparent color fluorescent plate of Example 1 is provided with a red, yellow, or white vinyl tape, or a paper tape of each color in close contact.

Benefits and assistance such as user direction instructions when turning off lights in warehouses, event venues, and parking lots.

"Emergency-saving sale" beverages in this machine will be opened free of charge in the event of a disaster.

It is attached to the tip of a blade for wind power generation, displays the trajectory of a rotating object in nature, and prevents the collision of animals and birds, thereby increasing the damage and operating efficiency of the machine.

Piping separation can be seen with the eyes of plants. By attaching tools for wiring work, work on the back of the ceiling becomes easy. Industrial use such as farm equipment and assisting preparatory work before morning and night in the storage room can be expected.

Cross section of color light-emitting plate with paint on display area 1 is a cross-sectional view of a color light emitting plate in which the light emitting surfaces at the four corners around the color light emitting plate of FIG. 1 are covered with an enamel lacquer white reflective layer. Color light emitting plate cross-sectional view with engraving on the display area and applying color paint as concave grooves, or using color vinyl tape, paper etc. as the exit surface

1. Luminous agent 2. Output layer 3. 3. Color transparent fluorescent plate Reflective layer 5. Engraving groove 6. Phosphorescent plate

Claims (3)

A plate based on an alkaline earth metal aluminate, coated with a phosphorescent agent, and a transparent color fluorescent plate are overlapped, and a close-up emitting layer is provided on the transparent color fluorescent plate surface facing the phosphorescent agent. A laminated display panel that can visually recognize colors from the surface. A laminated display panel in which reflective layers are provided on the outer periphery of the four corners of the transparent color fluorescent plate according to claim 1. A laminated display panel in which the light emitting layer according to claim 1 or 2 is formed by engraving grooves and paint is put into the groove portions.

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