JP2003241696A - Afterglow light source body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an afterglow light source body which has stable light emitting ability, can maintain prescribed luminance for a long period of time, is applicable to various forms of merchandise and exhibits visual beauty excellent in appearance. <P>SOLUTION: The afterglow light source of a three-dimensional shape is formed by mixing light accumulative pigment powder and a plastic resin, forming a container body, and embedding a UV radiation chip therein or the planar light source module is configured by superposing and pasting a ray guide plate which is printed with ink for guiding rays on a film-like plate formed with silver printed wiring and is embedded with the UV radiation chip, a film which is formed with a resin coating material layer containing the light accumulative pigment powder and has preferably transmittability, and a reflection plate which consists of a material having reflection characteristics, on each other and this planar light source module is used as the afterglow light source. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel afterglow light source body, and more particularly to an afterglow light source body which absorbs ultraviolet rays by a phosphorescent pigment and converts the wavelength to emit visible light.

[0002]

2. Description of the Related Art A so-called phosphorescent phosphor has an effect of absorbing light rays and releasing accumulated energy to emit light. At present, products that are produced by applying such a phosphorescent fluorescent substance are commercially available. These include various products such as animals or toys of other designs, key chains, and ornaments. Further, a product to which these phosphorescent fluorescent substances are applied is formed by uniformly mixing a resin and phosphorescent fluorescent powder, and forming the desired design object by injection or other molding method. Therefore, by the action of the phosphorescent fluorescent powder, it is possible to absorb light from the outside, accumulate energy, and emit light in a dark place.

The products to which the above-mentioned phosphorescent fluorescent powder is applied are designed to change the design of the products to attract the attention of consumers and enhance the value of the products. In other words, the appearance is characterized by changing the design or changing the pattern. However, there is no difference in that the phosphorescent fluorescent powder is simply used as a light source, and in terms of light emission, it is monotonous as it only emits light in a dark place. Therefore, it cannot meet the needs of consumers who constantly seek newness, and the value as a product is never high.

Further, an article formed by mixing phosphorescent powder and resin integrally to emit light in a dark place by absorbing the phosphorescent powder, but absorbs the light to store the stored energy. In the case of releasing, when the light emitting ability is reduced and the brightness is lowered with the passage of time, the brightness is too weak and the effect is significantly reduced. Further, the time for maintaining the afterglow is short, and the light emitting effect is limited.

[0005]

DISCLOSURE OF INVENTION Problems to be Solved by the Invention The inventors of the present invention have made earnest studies in view of the above-mentioned conventional technique and based on the experience of many years in the field, and finally succeeded in developing a novel afterglow light source body. . That is, it is an afterglow light source that has a stable light emitting ability and can maintain a predetermined brightness for a long time, and a new residual light source that can be applied to products with various designs by changing its form according to the form of the product. An object is to provide a light source body.

[0006]

Therefore, the present inventor mixed the phosphorescent pigment powder having a property of absorbing light and emitting light with a plastic resin (for example, epoxy resin, acrylic rubber, silicone rubber, etc.). Focusing on the structure of forming a container and further embedding an ultraviolet radiation chip to form a three-dimensional afterglow light source, printing ink for light guide on a film-shaped plate on which silver printed wiring is formed,
Also, a light guide plate in which an ultraviolet ray emitting chip is embedded, a film having a preferable transmissivity in which a resin coating layer containing a phosphorescent pigment powder is formed, and a reflection plate made of a material having reflection characteristics are laminated and attached. This invention was completed by paying attention to the structure.

That is, for example, S_RAL_TwoO_Four: E_U，
D_Y, Or S_RAL_l4O₂₅: E _U, D_YSuch as
Plasticizing phosphorescent pigment powder with a relatively long emission time
Mix with resin to form a container and radiate ultraviolet rays to the container.
Embed a chip (InGaN) and extend its guide to the outside.
It is extended and electrically connected to direct current, or
The resin paint layer containing the photo-pigment powder and the ultraviolet radiation chip
combine. The UV emitting chip is a single chip
Operates with a voltage of 3.5V to 4.5V and a current of 30mA or less
Therefore, not only the effect of power saving is achieved, but also the chip
Does not generate heat.

With the above structure, the phosphorescent pigment powder absorbs ultraviolet rays having a wavelength of 200 nM to 450 nM, converts this into visible light having a wavelength of 450 nM to 560 nM, and emits it. Therefore, the afterglow light source body according to the present invention can absorb light rays and emit light repeatedly to maintain predetermined brightness and emit light for a long time. The product using such a new afterglow light source can obtain not only a bright and clear luminous effect, but also a luminous effect, as compared with a product molded by mixing a conventional phosphorescent fluorescent powder and a resin. Can be maintained for a long time.

The details will be described below. An afterglow light source body according to a first aspect includes a luminous container body made of a mixture of a luminous pigment powder and a plastic resin, an ultraviolet ray emitting chip, and a DC power source. The manufacturing process includes a step of uniformly mixing a phosphorescent pigment powder and a plastic resin to form a container body of a desired design, and burying an ultraviolet radiation chip in the container body,
And extending the leads of the positive and negative electrodes of the ultraviolet radiating chip to the outside of the container to electrically connect to the DC power supply, wherein the ultraviolet light radiated from the ultraviolet radiating chip is stored in the light storing container. It is absorbed by the body and converted into visible light to emit light.

In the afterglow light source body according to a second aspect, the plastic resin according to the first aspect is transparent or translucent, and for example, an epoxy resin, an acrylic resin, a silicone rubber, or any other widely used mixture molding material. Selected from resins.

According to a third aspect of the present invention, there is provided an afterglow light source body in which the container according to the first aspect is a transparent or semi-transparent material in which the phosphorescent pigment powder is uniformly adhered by a method such as screen printing, spraying or coating. It is an optional article.

The afterglow light source body according to a fourth aspect is a light source module formed in a flat shape, and the method for manufacturing the light source module includes the following steps (a) to (f): In the process of a), silver printed wiring is formed on a film-like plate having a light-scattering property, and (b)
In the step of, the light guide ink is printed on the film-shaped plate on which the silver printed wiring is formed to form a light guide plate, and in the step of (c), an ultraviolet radiation chip is embedded in the light guide plate, In the step of d), a resin coating layer containing a phosphorescent pigment powder is formed on the film having a preferable transparency, and in the step of (e), the light guide plate which has completed the step of (c) is pinned. And a light guide plate formed in the step (e), a light guide plate formed in the step (e), and a phosphorescent pigment powder in the step (d). The film on which the resin coating layer is formed is laminated and attached.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention provides an afterglow light source body which absorbs ultraviolet rays by a phosphorescent pigment, converts the wavelength and emits visible light, and has a clear luminous effect, and The light emitting effect can be maintained for a long time. That is, there, a phosphorescent container is molded with a phosphorescent pigment powder and a plastic resin, and an ultraviolet ray emitting chip is further embedded to form an afterglow light source, or the phosphorescent pigment powder and a light reflecting film. , And a chip light guide plate and the like, and further combined with an ultraviolet radiation chip to form an afterglow light source of a planar light source module. In order to explain the structure and characteristics of such an afterglow light source body, specific examples will be given and described in detail below with reference to the drawings.

[0014]

[First Embodiment] An afterglow light source body according to the first embodiment comprises a phosphorescent pigment powder, a plastic resin, and a container body (3).
And an ultraviolet radiation chip (4) and a power supply (5).

The phosphorescent pigment powder is classified into a long-time self-luminous type and a general phosphorescent material. The long-time self-luminous type emits energy for a long time after absorbing energy.
In general, a phosphorescent material has a short emission time after absorbing energy. In embodiments, for example, as a preferable light-storing pigment powder _{S R AL 2 O 4: E} U, D Y or _S R _A,
L ₁₄ O ₂₅ : _{EU 7} D _Y and other types having a relatively long light emission time were selected.

The plastic resin is used as a binder in the present invention, and ABS, PC, PE, PP, PU, epoxy resin, acrylic resin, silicone rubber, rubber or the like can be selected.

The container body (3) is for embedding the ultraviolet ray chip (4) inside, and is made of plastic,
A soft material such as resin, or acrylic, glass,
It is made of a hard material such as ceramic. Preferably, a material having transparent or translucent transparency is selected in order to enhance the luminous effect of the phosphorescent material.

The UV emitting chip (4) has a wavelength of 395.
An ultraviolet ray of nM to 405 nM can be emitted, and a general ultraviolet LED may be used for implementation.

The power supply (5) adopts DC direct current, and the voltage is between 3.5V and 4.5V.

The first embodiment uses the above components to
For example, a three-dimensional afterglow light source body is configured as disclosed in FIG. That is, in the case of applying the injection molding method, the three-dimensional light source uses a plastic injection molding machine as a processing facility, injects a plastic resin containing a phosphorescent pigment to mold the container body (3), and has ultraviolet rays inside. Embed the radiation tip (4),
Leads (51) of the positive and negative electrodes are respectively extended to the outside of the container body (3) and electrically connected to a power source (5) to supply power to the afterglow light source body.

When hollow molding is adopted, various molding dies such as metal die casting, silicon rubber die casting, gypsum die casting, or resin die casting can be used as the molding die. A resin mixture containing a phosphorescent pigment powder is press-fitted into a mold, and an ultraviolet ray emitting chip (4) is further placed inside.
And the leads (51) of the positive and negative electrodes are extended to the outside of the container body (3) and electrically connected to the power source (5) to provide the power source.

When the surface coating molding is adopted, a resin material containing a phosphorescent pigment powder (such as spray coating with a spray gun, print coating, or manual coating on the surface of an existing transparent molded article). Examples include paints such as oxyacid resin, nitrate resin, acrylic resin, unsaturated polyester resin, polyaminoethyl formate resin, polyvinyl butyral resin, ethylene acetate copolymer resin, rubber resin, silicone rubber resin, or epoxy resin. ) Is applied. Then, the inside of the transparent molded product is locally dug to make it hollow, and the ultraviolet radiation chip (4) is embedded. At the same time, the positive and negative electrode leads (51) are respectively extended to the outside of the container (3) and electrically connected to the power source (5) to provide the power source.

[0023]

Second Embodiment A second embodiment will be disclosed in FIGS. 2 to 8. The second embodiment is a planar light source module which becomes an afterglow light source, and the manufacturing method thereof is the step (a) of forming a silver printed wiring (7) as disclosed in FIG. The step (b) of forming the plate (6), the step (c) of embedding the ultraviolet radiation chip (4), the step (d) of applying a resin coating containing a phosphorescent pigment powder, and the pin terminal. The step (e) for preparing the above, the reflection plate (20), the light guide plate (6), and the PET film (9) having the phosphorescent pigment resin film layer (21) formed thereon are attached and assembled. And (f) step.

In the step (a), a silver printed wiring (7) is formed by using a silver paste on a film-shaped plate having a preferable light scattering characteristic as disclosed in FIG. A chip embedding region (61) is formed at one end of the silver printed wiring (7). Further, the film-like plate serves as a guide plate (6) in the step (b) below.

In the step (b), the light guide plate (6) is formed as disclosed in FIG. That is, the light guide ink is printed on the plate on which the silver printed wiring (6) is formed in the step (a). In this case, the light guide granules (8) are printed in a circular shape or a stripe shape by screen printing (or laser engraving, etching, injection molding or the like may be applied).

In the step (c), as disclosed in FIG. 5, the ultraviolet radiation tip (4) is embedded in the tip-embedding region of the light guide plate (6) formed in the step (b). In this case, the contact fixing area (71) is formed with silver paste, and the bipolar leads of the ultraviolet emitting chip (4) are fixed to the contact fixing area (71) to electrically connect with the silver printed wiring.

In the step (d), a PET film (9) having preferable transparency as disclosed in FIG.
Then, a resin coating layer (21) containing a phosphorescent pigment powder is formed by a method such as screen printing or coating. The thickness of the resin paint layer is 70 μm to 250 μm. Accumulating light pigment powder, for example _{S R AL 2 O 4: E} U, D Y, or _S R _AL 14 _{O 25:} selecting a relatively long types of phosphorescent pigment powder of a light-emitting time, such as _E U7 _{D Y} .

In the step (e), as shown in FIG. 7, the light guide plate (6) obtained by completing the step (c).
A pin terminal (11) is formed on the. That is, a tin-printed annealed copper pin terminal (11) is fixed to a sticking film (111) using a heat and pressure sticking machine, and a silver printed wiring (7) electrically connected to an ultraviolet radiation chip It is fixed to the pin terminal fixing portion (11) at one end.

In the step (f), a reflector (20) as disclosed in FIG. 8, a light guide plate (6) obtained by completing the step (e), and a luminous property in the step (d). The PET film (9) on which the resin coating layer (21) containing the pigment powder is formed is laminated and attached. In this case, an adhesive for adhesion or a heat-melting type adhesive is applied by screen printing or another appropriate method, and the upper layer is P
ET film (9), the middle layer is the light guide plate (9),
The lower layer is laminated and attached so as to be the reflection plate (20). The reflection plate (20) is a reflection film generally used in the photoelectric industry.

The light-storing polymer granules of the light-storing pigment powder applied to the light guide plate (6) constituting the above flat light source module are in the form of inorganic compound granules having an appropriate size due to the inorganic multi-carrier. It has a function of absorbing light rays and emitting light in a dark place, and also absorbs ultraviolet rays having a wavelength of 200 nM to 450 nM emitted from the ultraviolet ray emitting chip (4) and converts them into visible light having a wavelength of 450 nM to 560 nM. Emit and repeat absorption and emission of light. Therefore,
It has a stable light emitting ability and can maintain a predetermined brightness for a long time.

A three-dimensional afterglow light source body by a container body (or a container body coated with a mixture of the phosphorescent pigment powder and the plastic resin) formed by uniformly mixing the phosphorescent pigment powder and the plastic resin, or a flat surface. In each of the afterglow light source bodies including the light source module, the phosphorescent pigment powder repeatedly absorbs and emits light to emit clear light, and the light emission time can be supported for a long time.

The above is a preferred embodiment of the present invention and does not limit the scope of the present invention. Its application range is various plastic resin products (accessories,
The surface of various stationery, seals, toys, accessory products, or glass or ceramic materials (see Fig. 1) can be used not only by making the keychain etc.) emit light as a whole but also by using screen printing technology. It can be applied to a wide range, such as emitting light to the whole or a local area, and has an excellent aesthetic appearance compared to conventional monotonous products. In addition, a change in color using a plurality of types of phosphorescent pigment powder,
Alternatively, if a change in the shade of color is added, a more visual change can be obtained. Therefore, all such modifications and changes that can be made by those skilled in the art, which have an equivalent effect on the present invention, belong to the scope of the claims of the present invention.

[0033]

The afterglow light source according to the present invention has a stable light emitting ability, can maintain a predetermined brightness for a long time, and can be applied to various product forms, and has an excellent appearance. It has the effect of presenting a visual aesthetic.

[Brief description of drawings]

FIG. 1 is a perspective view showing an application example of an afterglow light source body according to the present invention.

FIG. 2 is a flowchart showing a method of manufacturing the planar afterglow light source body of the present invention.

FIG. 3 is an explanatory diagram showing a silver printed wiring in the planar afterglow light source body of the present invention.

FIG. 4 is an explanatory view showing a light guide plate in the planar afterglow light source body of the present invention.

FIG. 5 is an explanatory diagram showing a relationship between a chip embedding region and an ultraviolet ray emitting chip in the planar afterglow light source body of the present invention.

FIG. 6 is an explanatory diagram showing a film coated with a phosphorescent pigment powder-containing resin coating layer phosphorescent property in the planar afterglow light source body of the present invention.

FIG. 7 is an explanatory diagram of a pin terminal connection portion in the planar afterglow light source body of the present invention.

FIG. 8 is an exploded view of a light source module in the planar afterglow light source body of the present invention.

[Explanation of symbols]

11 pin terminal 111 Adhesive film 20 Reflector 21 Luminescent pigment resin film layer 3 container 4 Ultraviolet radiation tip 5 power supplies 51 lead 6 Ray guide plate 61 Chip burying area 7 silver printed wiring 71 Contact fixing area 8 light guide granules 9 PET film

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) C09K 11/08 C09K 11/08 G09F 13/20 G09F 13/20 DF term (reference) 4F006 AA22 AA34 AA42 AB13 AB24 AB34 AB35 AB37 AB39 AB54 AB74 BA06 CA08 DA04 4H001 CA01 4J002 BB031 BB121 BG041 BN151 CD001 CG001 CP031 DE046 DE096 DE186 FD206 5C096 AA15 BA01 BA04 BC04 BC12 CA03 CA12 CA02 CC37 CD02 CE03 CE12 CD02 CE03 CE12 DD02 CE03

Claims (4)

[Claims] 1. A afterglow light source body comprising a phosphorescent container body made of a mixture of phosphorescent pigment powder and a plastic resin, an ultraviolet ray emitting chip, and a DC power source, wherein the phosphorescent pigment powder and the plastic resin are provided. The container body having a desired design is prepared by uniformly mixing, the ultraviolet radiation chip is embedded in the container body, and the leads of the positive and negative electrodes of the ultraviolet radiation chip are extended to the outside of the container body to form the DC power source. An afterglow light source body, which is electrically connected to the ultraviolet ray emitting chip, absorbs ultraviolet rays emitted from the ultraviolet ray emitting chip by the light storing container body, converts the ultraviolet rays into visible light rays, and emits light. 2. The plastic resin is transparent or translucent and is selected from, for example, epoxy resin, acrylic resin, silicone rubber, or other commonly used resins for mixing and molding. 1. The afterglow light source body according to 1. 3. The container is an arbitrary transparent or translucent article to which the phosphorescent pigment powder is uniformly attached by a method such as screen printing, spraying, or coating. An afterglow light source body described in. 4. An afterglow light source body comprising a planar light source module, wherein the method of manufacturing the light source module comprises steps (a) to (f) below. In the step, a silver printed wiring is formed on a film-shaped plate having a light-scattering characteristic, and in the step (b), a light guide is printed by printing a light guide ink on the film-shaped plate on which the silver printed wiring is formed. In the step (c), an ultraviolet radiation chip is embedded in the light guide plate, and in the step (d), a resin coating layer containing a phosphorescent pigment powder is formed on the film having preferable transparency. Then, in the step (e), a pin terminal is formed on the light guide plate which has completed the step (c), and in the step (f), it is made of a material having a reflection characteristic. A reflective plate, a light guide plate formed in the step (e), and a film having a resin coating layer containing a phosphorescent pigment powder formed in the step (d) are laminated and attached. Afterglow light source body.