JPH06282234A - Fluorescent character display device - Google Patents

Abstract

PURPOSE:To provide a fluorescent character display device having the capability to indicate such signs as used for a commercial signboard and show window, or a road sign and a directional sign with distinctness or high brightness in the indication section thereof. CONSTITUTION:Fluorescent paint is applied to the inner or outer side of a face plate 13 for receiving ultraviolet light from an ultraviolet light emission source 11 such as black light housed in a case 10 for exciting fluorescent light, and a fluorescent coat 14 of 100 microns or less in thickness is thereby formed. Also, a sign 15 consisting of characters, a design or the like is laid on the surface of the plate 13, using general paint, a color tape or the like, thereby providing a fluorescent character display device having such high distinctness as conventionally unavailable and further having high brightness.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a commercial signboard,
The present invention relates to an improvement of a display device used when a sharpness or high-intensity display such as a show window, a road sign, and a guide display is required.

[0002]

2. Description of the Related Art Conventionally, the above-mentioned display is classified into a type in which characters or a pattern are drawn on a display plate, a signboard type in which a fluorescent lamp is housed, and a type in which a neon tube lamp is used. Of these, the display panel type is a standard simple type, but when the surroundings become dark, it becomes invisible and the function as a display becomes insufficient. Signboard lamps are also widely used and are generally used, but white or light colors are illuminated by the internal fluorescent lamps, but they are not so clear and no brightness can be obtained, so improvement is desired.

The neon tube display is clear when it gets dark,
Because it has high brightness and excellent performance as a display,
Recently, it is often used as an advertising light and a signboard, but due to the shape limitation of the neon tube itself, it can draw only letters and patterns using dots and lines, and that the neon tube is expensive,
Since many neon tubes are used, when some of them disappear, the letters and designs may be disturbed and the appearance may be impaired, or display errors may occur.

[0004]

The conventional display device has drawbacks such as a simple display board and a signboard light which are not clear and not noticeable at night, and neon tubes are expensive and have restrictions in use. For some reason, improvements were desired. It is well known that fluorescent paint is used as a method for achieving a clear display and high brightness.

For example, as shown in FIG. 2, the surface of a material 1 such as a plate or plastic to be a signboard or a sign is coated with fluorescent paint or the like, or a display portion 2 is formed by attaching a tape or a cutting sheet. The fluorescent substance of the display unit 2 is illuminated by the sunlight 3 or the artificial light 4 composed of a black light or a mercury lamp and is used by a person 5 for a signboard, an identification / discrimination and the like.

The fluorescence in this case is excited by the ultraviolet rays in the sunlight and emits fluorescence, and the effect of fluorescence is conspicuous in the daytime, but the effect of fluorescence disappears at dusk or at night because the excitation light such as sunlight disappears. It becomes inconspicuous. By illuminating this fluorescent light with ultraviolet light, the fluorescent light has a vivid high brightness even at dusk or at night, and the fluorescent effect can be obtained.

However, under the present circumstances, there are double drawbacks that the fluorescent paint has a short life and appropriate lighting means must be devised.
The durability of fluorescent paint is inferior to that of general paint because the fluorescent pigment in the fluorescent paint is damaged by applying the fluorescent paint with a varnish or solvent, and the adhesive strength of plastic materials among other materials cannot be obtained. It was a lifetime. It is said that the fluorescent paint has a short life when exposed to sunlight because it has weather resistance only for one year or summer.

Further, an ultraviolet light source called a black light is generally used as an illuminating means as a light source for exciting fluorescence, but a light source such as a black light has to leak light other than being irradiated with its fluorescence. Absent. However, this leaked light is so-called bluish purple, which is an extremely unpleasant color. For example, when there is white paint around the fluorescent light, the color looks blue, which adversely affects other lighting means.

Therefore, it is necessary to irradiate only the fluorescent paint with ultraviolet rays and take other measures not to leak the light to the maximum extent, or sometimes the use of the fluorescent paint is stopped. The present invention is
With the above drawbacks eliminated, an economical and high-performance display device using a fluorescent paint having sharpness and high brightness is proposed.

[0010]

According to the present invention, a case in which an ultraviolet radiation source for exciting fluorescence, such as a black light, is provided inside, the inner surface or the inner or outer surface of a face plate which receives the ultraviolet radiation from the ultraviolet radiation source, This is a fluorescent display in which a fluorescent coating film is formed with fluorescent paint or fluorescent powder, and a display portion for characters, patterns, etc. is provided on the surface of the face plate with general-use paint or color tape.

Further, the thickness of the fluorescent coating film on the face plate is 10
20% or less in addition to fluorescent paint alone
Apply the fluorescent paint mixed with the following general paints to the inner surface of the face plate, coat the applied fluorescent paint with a thin film of clear paint with good UV transmittance, or put the fluorescent paint in the UV curable clear paint. To form a fluorescent coating film that has been mixed with the above, coated on a face plate, and cured by ultraviolet light.

[0012]

[Function] When ultraviolet rays from an ultraviolet radiation source such as a black light provided inside the case are applied to an inner surface fluorescent coating film of a face plate that transmits visible light such as an acrylic resin or a glass plate, the fluorescence passes through the face plate. , Radiates to outside as fluorescence output. On the surface of the face plate, general paint or normal color
The display area for letters, patterns, etc. drawn on the screen is sharp and has high brightness.

When a chemical lamp is used as an ultraviolet radiation source for exciting fluorescence, the fluorescence output has a clear but pale color tone. In the case of a black light, the fluorescence output has a sharpness and high brightness that have never been seen before.

Further, when a metal halide lamp is used, the amount of ultraviolet rays as excitation light becomes large, and even in a large-sized display device having a size of several square meters or more, similarly, the fluorescence output has sharpness and high brightness which have never been obtained.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the fluorescent display of the present invention will be described with reference to FIG. Reference numeral 10 is a case, and the case 10 is an ultraviolet discharge lamp 1 such as a black light as ultraviolet radiation.
Built-in 1. 12 UV rays from this UV discharge lamp
A fluorescent paint is applied to the inner surface of the face plate 13 of the case that receives the light to form a fluorescent coating film 14. The face plate 13 is formed of a material that transmits visible light, such as an acrylic resin plate or glass, and fluorescence is formed so as to pass through the face plate 13 and radiate to the outside as fluorescence output. On the surface 13a of the face plate 13, a character pattern or the like is drawn with an ordinary general paint or an ordinary color tape to form a mark 15.

With respect to the ultraviolet radiation, the fluorescence output in the case of black light as in the embodiment has a sharpness which is not in the past and has a high brightness.

When a chemical lamp is used to excite fluorescence, the fluorescence output is clear but has a faint color tone.

Further, when a metal highland lamp is used, the amount of ultraviolet rays as excitation light becomes large, and even in a large-sized display device having a size of several square meters or more, similarly, the fluorescence output has a sharpness which is not in the past and has a high brightness. Become.

In the embodiment, the fluorescent paint 14 is applied to the inner surface of the face plate 13.
Although an example of applying the above is shown, fluorescent powder may be used instead of the fluorescent paint. Further, if the thickness of the fluorescent coating film is 100 microns or more, the fluorescence self absorbs the fluorescence output, and the sharpness and the brightness on the display surface are deteriorated. Therefore, it is necessary to suppress the thickness to 100 microns or less. Further, in order to obtain a light color or obtain a delicate color tone, 20% or less of general-purpose paint may be mixed with the fluorescent paint.

Further, a fluorescent paint applied to the inner surface of the face plate 1,
Coating on the fluorescent powder with a clear thin film with good UV transmittance, or mixing fluorescent paint and fluorescent powder into the UV-curable clear paint and applying and UV-curing and drying to apply to the inner surface of the face plate. As a result, it is possible to provide the fluorescent display which is the object of the present invention and which has unprecedented sharpness and high brightness.

[0021]

INDUSTRIAL APPLICABILITY In the present invention, a face plate such as one side or both sides of plastic, glass, etc., which is coated with a fluorescent paint or a fluorescent powder on the inner face of the face plate, is positioned, and the face plate surface is coated with a normal general paint or a normal color tape It is important to draw a letter pattern, etc., and it has the advantages of long fluorescent life and easy exchange of displays.

Conventionally, since fluorescent light is applied to the surface of the face plate because it is irradiated from the outer surface of the face plate, it is exposed to sunlight,
It has been said that the structure has a long fluorescent life of only one year or the summer because it has a structure that is easily exposed to wind, rain, dust, and scratches. However, in the present invention, the fluorescent paint is applied to the inner surface of the face plate. Since it is not affected by the outside, the life span is dramatically extended and the fluorescence output is maintained for 2-3 years.

The longevity of the fluorescent light is realized by applying the paint to the inner surface of the face plate. If the surface is coated in this way or is mixed in the UV-curable clear paint, the fluorescence is for excitation. It is also protected from ultraviolet rays and has a longer life.

In the thus-applied fluorescence, the fluorescence output excited by the ultraviolet rays from the inner surface passes through the face plate having a good visible light transmittance and functions as an indicator.

In the display of the present invention, the character design and the like can be freely drawn on the surface of the face plate. Therefore, for example, due to the limitation of the shape of the neon tube itself in the conventional neon tube type display, characters and characters are used. There are drawbacks such as drawing only patterns, and expensive neon tubes and the use of many neon tubes, and when some of them disappear, the letters and patterns are disturbed and aesthetics are lost, and display errors occur. Disappear.

A further advantage of the present invention over the neon tube system is that the face plates can be freely replaced. When characters / designs are needed for the display, they can be easily replaced, which has the effect of expanding the versatility of the display. As is clear from the above description, by carrying out the present invention, a high-performance display having extremely high brightness can be obtained, and the economical effect is large.

[Brief description of drawings]

FIG. 1 is a schematic view of an embodiment of a fluorescent display of the present invention.

FIG. 2 is a schematic view of a conventional fluorescent display panel.

[Explanation of symbols]

 10 Case 11 Ultraviolet Discharge Lamp 12 Ultraviolet 13 Face Plate 13a Faceplate Display 14 Fluorescent Coating Film 15 Marking

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Mitsuyuki Arai 500-3 Iida, Ogawa-cho, Hiki-gun, Saitama Prefecture (72) Inventor Yoshiro Kurokawa 3-19-13 Matsubara, Setagaya-ku, Tokyo

Claims (5)

[Claims] 1. A fluorescent coating of fluorescent paint or fluorescent powder on the inner surface or the inner or outer surface of a face plate that receives ultraviolet rays from the ultraviolet radiation source of a case in which an ultraviolet radiation source such as a black light for fluorescence excitation is arranged inside. A fluorescent display characterized in that a coating film is formed, and a display portion composed of characters, patterns, etc. is formed on the surface of the face plate by using a general paint or color tape. 2. The thickness of the fluorescent coating layer formed on the face plate is 1
The fluorescent display according to claim 1, wherein the fluorescent display has a size of not more than 00 microns. 3. The fluorescent display according to claim 1, wherein the face plate is coated with a fluorescent paint or a paint in which 20% or less of a general-use paint is mixed with a fluorescent powder. 4. The fluorescent display according to claim 1, wherein the coating film layer made of fluorescent paint or fluorescent powder formed on the face plate is coated on its upper surface with a clear paint having a good ultraviolet transmittance. 5. The fluorescent display according to claim 1, wherein the coating layer of the face plate formed by the fluorescent paint or the paint 1 in which the fluorescent powder and the ultraviolet curable clear paint are mixed is cured by ultraviolet light. .