JPH09265267A - Illumination sign - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an attachable and detachable illumination sign formed by using a light storage material having high after-glow luminance and high safety. SOLUTION: This illumination sign 1 consists of synthetic resin molded goods contg. SrAl2 O4 light storage materials is brought into contact with a light emitter 2 and is molded to a prescribed shape in such a manner that this sign is made mountable attachable and detachable to and from the light emitter 2, such as, for example, fluorescent lamp. The illumination sign is otherwise formed with a coating material contg. the SrAl2 O4 light storage materials on the front side surface of the synthetic resin molded goods molded to the prescribed shape made mountable attachably and detachably to and from the light emitter, such as, fluorescent lamp. Further, the sign consists of the synthetic resin sheet material contg. the SrAl2 O4 light storage materials and is mounted a prescribed position such as the front surface of the emitter.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illumination sign using a SrAl ₂ O ₄ type phosphorescent material.

[0002]

2. Description of the Related Art Conventionally, a phosphorescent material is applied to the hands of a hand or a numeral on a dial, and an alarm clock or knob that allows the user to know the time even in the dark is molded from a synthetic resin containing the phosphorescent material. , A pull switch puller that can confirm the position of the knob in the dark is known.

[0003]

However, the phosphorescent material used for such an article is, for example, ZnS: Cu.
This system is represented by a system and has a low afterglow brightness, which merely reveals the existence of itself and cannot be used as lighting. In addition, the conventional phosphorescent material,
Some households contain radioactive substances, and their use is dangerous in general households, so use of highly safe phosphorescent materials is required.

[0004] A conventional product containing a phosphorescent material mixed or applied cannot be removed even if the afterglow becomes troublesome, and even if the phosphorescent ability is deteriorated during use, it is replaced and renewed. I couldn't.

[0005]

The illumination sign according to the present invention is detachably mounted so as to be in contact with a light-emitting body.
A synthetic resin molded product mixed with an Al ₂ O ₄ -based phosphorescent material, which is detachably mounted so as to be in contact with the light-emitting body,
The front surface of the synthetic resin molded article, which coating layer containing SrAl ₂ O ₄ based light storing material is formed or detachably mounted to face the light emitter, a SrAl ₂ O ₄ based light storing material Since it is made of the mixed synthetic resin sheet material, the problem can be solved.

[0006]

As described above, the illumination sign of the present invention is used as a light-storing material in comparison with the conventional ZnS: Cu-based light-storing material.
Since the afterglow time is ten times or more longer and the higher the afterglow illuminance is obtained as the illuminance of the luminous body to be excited is higher, the SrAl ₂ O ₄ -based phosphorescent material is used, and thus the afterglow can be used as illumination. it can. Moreover, since it does not contain not only radioactive substances but also harmful substances, there is no danger of handling and it does not pollute the environment. Further, since it has good weather resistance, it can be used outdoors for a long time without deterioration. Further, since the illumination sign of the present invention is detachably attached, when afterglow is not necessary,
It can be removed and stored in the dark.

[0007]

Embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 shows SrAl ₂ which is detachably attached so as to come into contact with a rod-shaped fluorescent lamp as a light emitting body.
FIG. 3 is a perspective view showing an illumination sign made of a synthetic resin molded product mixed with an O ₄ -based phosphorescent material, and FIG. 2 is a perspective view of the mounted synthetic resin molded product.

This lighting sign 1 is made of acrylic resin with Sr.
An Al ₂ O ₄ -based phosphorescent material is mixed in 10% by weight, and the main body 11 is formed into a shape that conforms to the outer peripheral surface of the glass of the fluorescent lamp 2, and the glass outer periphery of the fluorescent lamp 2 is provided at both ends thereof. A grip portion 12 is provided for mounting on the surface. Since the grip portion 12 has a narrow width, the illumination sign 1 can be easily attached to and detached from the fluorescent lamp 2.

The illumination sign 1 mounted on the peripheral surface of the fluorescent lamp 2 is excited by the light emission of the fluorescent lamp 2. Even after the fluorescent lamp 2 is turned on for 30 minutes and then turned off, the afterglow illuminance of about a miniature ball is maintained for about 5 minutes, and the recognizable brightness is maintained for about 8 hours.

In the case where the base material of the illumination sign 1 is an acrylic resin, when it is mixed with the SrAl ₂ O ₄ type phosphorescent material in a monomer state and directly molded into a predetermined shape by the casting method,
When the material is once molded into a sheet by the cast molding method and then molded into a predetermined shape by a thermoforming method, or when the acrylic resin pellets and the SrAl ₂ O ₄ -based phosphorescent material are mixed and directly injection molded into a predetermined shape, There is a case where a sheet is once formed by extrusion and then formed into a predetermined shape by thermoforming.

As other base materials, ethylene / vinyl acetate resins, thermoplastic elastomers, transparent vinyl chloride resins, etc. can be used in addition to general-purpose olefin resins such as polyethylene and polypropylene. Alternatively, a thermoforming method after extrusion can be adopted.

The amount of the SrAl ₂ O ₄ type phosphorescent material mixed in the base material is appropriately adjusted depending on the afterglow illuminance, the afterglow time and the base material required for the illumination sign, but generally 5 to 5.
It is about 30% by weight, and when it is less than 5% by weight, even after the fluorescent lamp 2 is turned off, barely recognizable afterglow illuminance is obtained. It is not suitable for general purpose because it will soar.

In the above-mentioned embodiment, the SrAl ₂ O ₄ type phosphorescent material is mixed in the synthetic resin molded product, but as an example of the second invention of the present application, a transparent or translucent synthetic resin is used for the phosphorescent material. It is also useful to use an illumination sign formed by molding into a shape as shown in FIG. 1 without mixing in, and then forming a paint layer containing a SrAl ₂ O ₄ -based phosphorescent material on the front surface of the molded product.

For example, an acrylic resin is molded into the shape shown in FIG. 1 by an injection molding method, and the room temperature drying mold 2 is formed on the front side surface thereof.
Liquid type acrylic urethane resin solution 80 parts by weight and S
Even if a paint mixed with 20 parts by weight of the rAl ₂ O ₄ -based phosphorescent material is applied, an illumination sign can be obtained. This lighting sign has a higher SrA than the lighting sign shown in the previous embodiment.
Since the l ₂ O ₄ -based phosphorescent material is not affected by heat or stress during molding, its phosphorescent ability is not impaired. As the base material used for molding the molded article of the present invention, the same material as the material mentioned in the embodiment of the first invention is used. The binder resin of the paint includes a two-pack type epoxy resin and alkyd resin, and the room temperature dry type includes chlorinated rubber, vinyl chloride resin and lacquer. The method of forming the paint layer includes spraying, screen printing, dipping and the like.

In the example shown in FIG. 1, the illumination sign 1 is attached to the rod-shaped fluorescent lamp 2 as a light emitting body.
Not only the rod-shaped fluorescent lamp but also a ring-shaped or spherical fluorescent lamp can be mounted, and it can be applied not only to a spherical incandescent lamp but also to a halogen lamp or a mercury lamp. When such an illumination sign is not required, it can be removed from the light emitting body and stored in a dark place so that the light storing ability does not deteriorate.

The embodiment shown in FIG. 3 is an illumination sign of the third invention of the present application, which is a synthetic resin sheet in which a SrAl ₂ O ₄ -based phosphorescent material is mixed and which is detachably attached so as to face the light emitting body. It is sectional drawing which shows an example which consists of materials. In this example, an illumination sign 4 made of a synthetic resin sheet material mixed with a SrAl ₂ O ₄ -based phosphorescent material is attached to both sides of the inner surface of the shade 3 of the fluorescent lamp 1 facing the fluorescent lamp 2 serving as a light-emitting body. The state where it is attached with the tape is shown.

In this case, since there is a distance between the light emitter and the illumination sign as compared with the above-mentioned embodiment, the afterglow illuminance is slightly lowered when the excitation time for which the light emitter emits the illumination sign is the same. However, when the excitation time is long, the difference is small. As a method of removably attaching the lighting sign, in addition to a double-sided adhesive tape, a surface fastener or the like can be used, or it may be simply hooked and fastened.

FIG. 4 shows an illumination sign 6 mounted on a plate around a fluorescent lamp-embedded switch 5 provided at a position facing the light emitter with a double-sided adhesive tape. In this case, not only the location of the switch but also the ON / OFF code of the plate can be read with the afterglow illuminance after lighting for 30 minutes.

The above-mentioned base material can be used as the base material for the illumination sign of the third invention. As in the second aspect of the invention, it is also possible to use a synthetic resin for paint which is soluble in a solvent and which is mixed with a phosphorescent material. For example, a sheet material obtained by applying and drying a mixture of 80 parts by weight of an acrylic synthetic resin coating and 20 parts by weight of a SrAl ₂ O ₄ -based phosphorescent material,
Alternatively, a double-sided adhesive tape can be used as a lighting sign on the back surface of a synthetic resin sheet or thick paper coated and dried. In this case, thickening the coating layer is effective because it enhances the light storing ability. In order to make the coating surface smooth, it is preferable to apply the undercoat with a high-viscosity paint containing a large amount of the phosphorescent material and the topcoat with a low-viscosity paint containing a small amount of the phosphorescent material. A synthetic resin sheet material mixed with a phosphorescent material can also be formed by using such a coating material by a screen printing method. Such a sheet material is detachably attached to a predetermined position by a double-sided adhesive sheet.

In the third aspect of the invention, sunlight can be used as a light emitting body, and afterglow is maintained all night with a short excitation time especially in fine weather.

[0021]

Since the illumination sign of the present invention is configured as described above, the longer the afterglow time and the higher the illuminance of the light-emitting body to be excited, the higher the afterglow illuminance is obtained.
_{Since the 2} O 4 -based phosphorescent material is used, afterglow can be used as illumination. Moreover, since it does not contain not only radioactive substances but also harmful substances, there is no danger of handling and it does not pollute the environment. Further, since it has good weather resistance, it can be used outdoors for a long time without deterioration.

Since the illumination sign of the present invention is removably attached to the light emitting body or a portion facing the light emitting body, if the afterglow is not necessary, remove it and store it in a dark place. , The luminous ability does not deteriorate. In addition, when the lighting sign has been used for a long time and the light-storing ability of the lighting sign is extremely reduced, it is easy to replace it with a new one.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which an illumination sign according to the first or second invention of the present application is mounted so as to be in contact with a rod-shaped fluorescent lamp as a light emitting body.

2 is an enlarged perspective view of the illumination sign of FIG. 1. FIG.

FIG. 3 is a cross-sectional view of relevant parts showing a state where an illumination sign of a third invention of the present application is attached to a shade of a fluorescent lamp as a light emitting body so as to face the fluorescent lamp.

FIG. 4 is a front view showing a state in which an illumination sign is mounted at a position facing a light emitting body.

[Explanation of symbols]

 1 Lighting sign 4 Lighting sign 6 Lighting sign

Claims (3)

[Claims] 1. An illumination sign made of a synthetic resin molded product containing a SrAl ₂ O ₄ -based phosphorescent material, which is detachably mounted so as to be in contact with a light-emitting body. 2. An illumination sign in which a paint layer containing a SrAl ₂ O ₄ -based phosphorescent material is formed on the front surface of a synthetic resin molded product that is detachably mounted so as to be in contact with a light emitting body. 3. An illumination sign made of a synthetic resin sheet material mixed with a SrAl ₂ O ₄ -based phosphorescent material, which is detachably mounted so as to face the light emitting body.