JPH07287541A - Display device with luminous paint and its manufacture - Google Patents

Abstract

PURPOSE:To obtain a display device which is rich is expression and superior in light emission characteristics by improving the outward appearance in the light and diversifying surface finishing, obtaining colorfull light emission in a darkplace, and greatly increasing a variety of designs in a dial plate of watch, signboard and mark using a luminous paint. CONSTITUTION:Rough printing or rough coating 2 is performed on a dial base 1 which has been plated, and luminous paint 3 is provided thereupon entirely or over a wide range by screen printing. Further, light-transmissive printing ink or a translucent film 4 is provided on it by screen printing or sticking, and light-nontransmissive ink 5 is provided on it. In a light place, the color tone of the luminous paint 3 does not appear, but light is emitted in a dark place with the color tone that the printing ink or translucent film 4 has.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device using a luminescent coating for a display portion and a method for manufacturing the same. In particular, the present invention relates to a display device preferably used for a timepiece dial, a signboard, a sign, and the like, which can be designed in a variety of ways and have a high expressiveness.

[0002]

2. Description of the Related Art Conventionally, as a method of using a luminescent coating on a timepiece component, a signboard, a sign, etc., for example, in the case of a clock, the luminescent coating is applied on the time scale of a dial or the hands are filled with the coating. Was displayed. This prioritizes the function of the clock. Further, as an example applied to a function other than the original function of a timepiece, as disclosed in Japanese Utility Model Application Laid-Open No. 55-139471, there is disclosed a method of applying a luminous paint to the constellation portion for display. However, as the night-light color used in the past, only a single color was set on the same dial.

Further, as the luminous paint, there are a self-luminous luminous paint composed of promethium which is a radioactive substance, and a luminous luminous paint containing zinc sulfide as a luminous substrate. The self-luminous luminescent paint continued to illuminate until the radioactive material had decayed, and the phosphorescent luminescent paint obtained an afterglow time of 1 to 2 hours after absorbing the light. Furthermore, recently, a luminous phosphorescent paint using aluminum strontium oxide as a luminous body and polymethyl acrylate as a binder has been developed, and the afterglow time of 6 to
A luminous paint that can emit light for a relatively long time of 8 hours is used.

[0004]

However, in the above-mentioned prior art, the purpose was to use the luminous paint originally having only a limited color tone for the function of the timepiece and for a small part of the display. Therefore, the method of using the luminous paint is monochromatic, and the method of using the luminous paint as a design point has not been considered so much. In other words, the variety in terms of design was poor, and only the ones that were not very expressive were obtained.

[0005] In some luminous paints, by changing only the binder without changing the luminescent substrate, the luminescent color in the dark is the same even though the luminescent color looks different in bright places. Until now, there has been no method for pursuing design diversity. Further, a display device that applies a luminescent coating over a wide range and can utilize light for a long time has not been considered so far.

Therefore, the present invention is to solve such a problem, and an object of the present invention is to provide a display device such as a dial, a signboard, and a sign of a watch using a luminous paint in a bright place. It is to improve the appearance and diversify the surface finish, and to obtain colorful colored light in a dark place. Another object of the present invention is to obtain a display device having a great variety of designs and having a great expressive power. Still another object of the present invention is to obtain a display device which is coated with a luminescent coating over a wide range and which can emit light for a long time and which is excellent in design and visibility.

[0007]

In order to solve the above-mentioned problems, a display device with a luminescent coating of the present invention comprises a luminescent coating layer formed on substantially the entire surface of a base and a light transmitting layer formed on the upper surface of the luminescent coating layer. And a layer. Furthermore, the color tone of the luminous coating layer and the light transmitting layer are different, a light reflecting layer is formed between the base and the luminous coating layer, and a light impermeable layer formed on a part of the upper surface of the light transmitting layer. It is preferable to have.

Further, the light-transmitting layer is composed of a plurality of substances having different light-transmitting properties, the light-reflecting layer is composed of a plurality of substances having different light-reflecting properties, and the luminous coating layer is colored or emits light. It is more preferable to be composed of a plurality of luminous paints of different colors.

As a display object, it is most suitable to apply to a timepiece dial, a sign or a signboard.

Further, as a method for manufacturing a display device with a luminescent coating, after forming a light reflecting layer on a base, a luminescent coating layer is formed on almost the entire surface of the light reflecting layer, and light is transmitted to the upper surface of the luminescent coating layer. It is desirable to form a layer, in particular, to form a light-impermeable layer on a part of the upper surface of the light-transmitting layer, or to form the light-transmitting layer by printing and to make the number of times of printing partially different. Is also effective.

[0011]

The display device of the present invention and the manufacturing method thereof will be described in detail below with reference to the embodiments. In addition, Example 1
3 to 3 are examples applied to a dial of a timepiece, Example 4 is an example applied to a sign, and Example 5 is an example applied to a signboard.

(Embodiment 1) FIG. 1 is a diagram showing a cross section of a dial plate for a watch with a luminescent coating, which is a first embodiment of the present invention, and its configuration and manufacturing method will be described in detail below.

First, a base printing or base coating 2 is placed on a dial base 1 plated with nickel, chromium, silver, gold or the like. This has a function as a light reflection layer as described later. Next, the luminescent coating 3 is placed on the entire surface or in a wide range by screen printing to form a luminescent coating layer. Further, a printing ink or a semitransparent film 4 is placed entirely or partially on the upper part thereof. As the method, printing ink is used for screen printing, and semitransparent film is used for pasting. This printing ink or translucent film 4 forms a light transmissive layer. Then, the printing ink 5 is applied to the upper portion of the printing ink by octopus printing. This printing ink 5 forms a light-impermeable layer and is preferably used for displaying a brand name or a thin line in the case of a timepiece as described later.

The term "light transmissivity" as used herein means a property that the light of an amount capable of accumulating light in the luminescent paint 3 is transmitted and the color of the luminescent paint 3 does not directly appear on the dial surface. It is defined as having. Therefore, completely transparent ones are not included in the range of "light transmission". What is included in this definition is, for example, translucent or opaque regardless of whether it is colored or colorless. In addition, "light opacity" means that it does not have "light transparency".
It blocks light almost completely.

As the luminescent paints currently used, there are a self-luminous luminescent paint using promethium containing a radioactive substance as a luminous body and a luminous luminous paint which does not contain a radioactive substance. The luminous body of the luminous phosphorescent paint includes a luminous phosphorescent paint based on zinc sulfide and a long-life luminous phosphorescent paint composed of a metal oxide using a rare earth (Eu, Dy, etc.) for the luminous body. The luminescent color can be changed by changing the illuminant. Here, as the luminous paint 3, as in this embodiment,
When the area used is large (when the luminescent coating is used over a wide area), it is desirable to use a long-life phosphorescent luminescent coating containing aluminum strontium oxide or the like as a luminescent substrate. That is, since it does not contain radioactivity, it has no adverse effect on people and the environment, and has a long afterglow time, which is excellent in usability.

FIG. 2 is an example in which the structure of FIG. 1 is applied to a timepiece dial. That is, the luminous paint 3 is almost entirely placed on the upper surface of the dial which has been subjected to the base printing or the base coating 2, and the screen-printing printing ink or the attached film 4 is entirely placed on the upper surface thereof. is there. further,
On top of that, printing ink 5 is placed as a Roman numeral for brand name and time display.

In FIG. 2, the light applied to the dial from the outside is transmitted through the screen-printing printing ink or the attached film 4 and is stored in the luminous paint 3 having a luminous property. Then by darkening the surroundings,
The light stored in the luminescent coating 3 is transmitted through the printing ink or film 4 and is emitted to the outside. And
Since the printing ink 5 has a light impermeability, this portion is lifted and visually recognized.

Now, the above-mentioned base printing or base coating 2
Has a function of sufficiently storing light in the luminescent coating 3. That is, light from the outside passes through the printing ink or film 4 and is transmitted to the luminescent coating 3, but there is also light that passes through the luminescent coating 3. This light is reflected to the side of the luminescent coating 3 and is intended to be accumulated in the luminescent coating 3. For this reason, it is desirable that the base printing or the base coating 2 be white or a color close to white. By doing so, the light is sufficiently diffused and reflected, and the luminous performance of the luminescent coating 3 can be enhanced. The base printing or base coating 2 is not essential. It suffices that the dial base 1 has a light reflection performance similar to that of the base printing or base coating 2. In this case, the steps of the base printing or the base coating 2 can be omitted, so that the manufacturing can be rationalized.

As a feature of the first embodiment, the appearance when the dial is placed in a bright place is that the screen printing or the film 4 is placed on the upper portion of the luminous paint 3, so that the color tone of the luminous paint 3 is directly on the surface. There is a thing that does not come out. That is, the surface of the dial plate on which the luminescent coating 3 is almost entirely placed is always the color of the luminescent coating in the past, but according to the present invention, the screen printing or the film is placed on the luminescent coating. , You can make dials with various tones. As another feature, when the light is emitted in the dark, the light emitted from the luminescent paint 3 passes through the screen-printing printing ink or the attached film 4 to give the original luminescent color of the luminescent paint. Is that different light can be produced by simple means.

On the other hand, in spite of these effects, the printing ink and the film 4 on the upper surface of the luminescent coating 3 can block the light to some extent both when the light is stored and when the light is emitted. The light-emitting strength of the dial shown is slightly inferior to the natural light-emitting strength of the luminous paint. However, by changing the intensity of the emitted light by placing the printing ink or film on the upper surface of the luminous paint applied to the dial as described above, it is possible to effectively use it in terms of design as follows. it can.

(Embodiment 2) FIG. 3 is a view showing a cross section of a dial plate for a timepiece with a luminescent coating, which is a second embodiment of the present invention, and its construction and manufacturing method will be described in detail below. However, since the basic configuration and manufacturing method are similar to those of the first embodiment, the overlapping portions will be briefly described.

First, as in the first embodiment, the base printing or base coating 2 is placed on the dial base 1 that has been plated, and the luminous paint 3 is placed almost entirely on the upper surface by screen printing. The feature of the second embodiment is that printing inks 6 and 7 having different printing colors are further placed on the upper surface thereof. Here, the color of the printing ink 6 is lighter than the color of the printing ink 7, and has a characteristic that light is more easily transmitted than the dark color of the printing ink 7. When this dial is placed in the darkness, the light emitted from the dial emits the strongest light in the portion where the luminescent coating 3 is directly exposed (the portion where the printing inks 6 and 7 are not placed). It is possible to change the intensity of light to emit light in the order of the portion to which the printing ink 6 of light color is applied next, and the portion to which the printing ink 7 of dark color is applied next. it can. That is, it means that the printing ink 6 and the printing ink 7 have different light transmittances, and the light and shade of color represents the strength of the light transmittance.

FIG. 4 is an example in which the structure shown in FIG. 3 is applied. After the luminous paint 3 is applied to almost the entire surface of the dial, the light color printing ink 6 and the dark color printing ink 7 are applied. It is a thing. When this dial is placed in the dark, the part where the luminous paint 3 is exposed on the surface emits the strongest light, so that the part of the map on which the light-colored printing ink 6 is applied appears thin and the dark-colored printing is performed. The roman numeral indicating the brand name and the time of the portion to which the ink for use 7 is applied appears in a dark color close to black.

As described above, by changing the strength (emission intensity) of the characters or patterns floating on the upper surface of the luminous paint, it is possible to obtain a display device which is rich in expression, excellent in design, and rich in variety.

In addition to the above-mentioned method of changing the printing color, the following methods are conceivable as methods of changing the strength (emission intensity) of the characters and patterns floating on the upper surface of the luminous paint. That is a method of changing the number of printing times of the printing ink. That is, the inks of the same color are used as the printing inks 6 and 7 shown in the cross-sectional view of FIG. 3, and the printing ink 6 part is finished by one printing, whereas the printing ink 7 part is Printing is performed multiple times. This changes the light transmittance. Then, even if the ink of the same color tone is used, the portion where the ink is applied several times can block the light emitted from the luminescent coating more strongly. The number of times the printing inks 6 and 7 are printed is not limited to one and a plurality of times as described above.
The number of times should be different.

Furthermore, regardless of the type of the luminous paint such as the self-luminous luminous paint and the luminous luminous paint, it is necessary that the white color of the undercoat or the undercoat emits more light (the light emission intensity changes depending on the color tone of the undercoat). It can also be used. That is, for example, the base printing or the base coating 2 in FIG. 1 is printed in multiple colors instead of one color. As a result, when the dial emits light in the dark, it is possible to add contrast by changing the intensity of light.

Further, the characteristic that many luminous paints are translucent paints can be utilized. That is, in a bright place, it is possible to visually recognize the base printed in multiple colors under the translucent luminous paint. Therefore, the base printing or base coating 2 is used as a design in a bright place. Further, since it is possible to obtain the contrast in which the emission intensity changes in the darkness, it is possible to further enhance the expressiveness and design.

As described in Examples 1 and 2 above, by printing on the upper surface or the base of the dial which is coated with the luminous paint over a wide area or by sticking the film on the upper surface of the dial, the emission color and the intensity of the light can be enhanced. The contrast of light can be added by freely changing the depth. Moreover, since it can be realized by a relatively simple method, it is very effective in terms of production such as manufacturing time and cost.

(Embodiment 3) FIG. 5 is a cross-sectional view showing a dial plate for a timepiece with a luminescent coating, which is a third embodiment of the present invention, and its construction and manufacturing method will be described in detail below. However, since the basic structure and manufacturing method are similar to those of the first and second embodiments, the overlapping parts will be briefly described.

First, the base printing or base coating 2 is placed on the dial base 1 that has been plated. The feature of the third embodiment is that the luminous paints 8, 9 and 10 having different color tones or emission colors are placed on the upper surface by screen printing or manual work. Here, as described in the first embodiment, the luminescent materials 8, 9 and 10 do not contain radioactivity in the luminous body and have a long afterglow time in consideration of the influence on humans and the environment. It is desirable to use a long-life phosphorescent luminescent coating containing aluminum strontium oxide or the like as a light emitting substrate. Then, the printing ink 5 for producing a fine line in a brand name or a design is applied to the upper surface of the base printing or base coating 2.

FIG. 6 shows an example of using a dial to which the structure shown in FIG. 5 is applied. As an example, when the luminescent color or luminescent color of the luminescent paints 8, 9, 10 is blue, yellow, or red, a dial image of a traffic signal can be produced. In the same manner, it is possible to use luminescent paints having various luminescent colors or luminescent colors for characters and symbol marks. As a result, the market is provided with a dial that uses the sense of play as a selling point and a display device such as a watch that uses this dial, which is out of the conventional functional usage of the luminous paint. be able to.

Further, as another example of the dial to which the structure of FIG. 5 is applied, the following can be considered. For example, an example of displaying neon lights in a shining downtown area using a multicolored luminous paint, and an example of displaying famous nightscapes around the world in the same manner. Watches using such dials are very effective as souvenir products in areas where neon lights and night views are for sale.

The above-described Examples 1 to 3 can sufficiently exhibit their performance even if they are carried out alone. Then, by combining these with each other, a display device having more variety can be obtained.

(Embodiment 4) FIG. 7 is a plan view showing a sign with a luminous paint which is a fourth embodiment of the present invention. This is an example of a traffic sign (stop) that makes the most of the characteristics of luminous paint.

The detailed detailed device construction is the same as that of the first to third embodiments described above, so that the description is omitted, but the outer frame portion of the sign and the portion of the character "stop" are clearly illuminated and visually recognized. It is configured to be easy to do. That is, the outer frame part of the sign and the part of the character "Stop" are
The luminescent coating 3 is visible as it is from the outside or is covered with the light-colored printing ink 6. On the other hand, the portions other than the above are covered with the dark printing ink 7. Therefore, the outer frame portion and the portion of the character "stop" can be brightly highlighted.

In the present embodiment, the "stop" traffic sign has been described, but it is of course applicable to other traffic signs. Several colors are used for traffic signs. The display device of the present invention is very effective because it can easily meet these requirements by changing the color tone of the printing ink 6.

Further, in the case of the present embodiment, since there is no need for the conventional lighting equipment for displaying the signs, there are various advantages such as energy saving, downsizing, weight saving, and improvement of maintainability.

In addition to traffic signs, it is also effective for any signs that are used in bright and dark states, such as guide / guidance signs at home or in the office.

(Embodiment 5) FIG. 8 is a plan view showing a signboard with a luminous paint which is a fifth embodiment of the present invention. In particular, this is an example of a business information signboard that makes use of the characteristics of luminous paint.

The fifth embodiment has the same structure as that of the fourth embodiment. That is, it is configured such that the character "in business" emits bright light. Specifically, the part of the character “business in progress” is covered with the light-colored printing ink 6. On the other hand, the portions other than the above are covered with the dark printing ink 7.

In particular, in the case of a signboard for attracting customers / guidance as in this embodiment, visibility, distinctiveness and appeal are required. The display device of the present invention is suitable for such an application because it has a rich expressiveness, excellent designability, and a great variety by changing the color tone of the printing ink 6.
In addition to the method of changing the color tone of the printing ink 6, various methods described above such as a method of changing the color tone of the base printing or base coating, a method of changing the color tone of the luminous paint or the emission color can be used.

In the present embodiment, the signboard "in operation" has been described, but it can be applied to other signboards. Examples include company names, nameplates, street advertisements, and destination information.

[0043]

As described above, the present invention has the following effects.

That is, according to the first and second aspects of the invention, in a bright place, it is possible to conceal the appearance of the luminous paint and produce various surface finishes with a wide variety of variations. Then, in a dark place, light different from the original luminescent color of the luminous paint can be produced by simple means. In particular, even if a single color luminescent paint is used for the dial, it is possible to obtain a display device that emits light in multiple colors.

According to the third aspect of the invention, it is possible to sufficiently reflect the light and to remarkably enhance the luminous performance of the luminescent coating.

According to the invention described in claim 4, in addition to being able to obtain a variety of designs and a variety of appearances, the visibility can be greatly enhanced.

According to the invention described in claims 5 and 6,
You can create a unique display device that can add contrast to the light and make letters and pictures stand out. As a result, it is possible to obtain a display device which is more expressive, has an excellent design, and has a great variety, and which is particularly excellent in marketability.

According to the invention described in claim 7, it is possible to obtain a display device which shines in colorful multicolors in a dark place. Therefore, it is possible to obviously increase the variety in design, unlike the one using a single color luminescent paint used in the conventional display device. In particular, since it is highly fashionable and has a playfulness, it becomes possible to send a display device having a commercial value that has not been available to the market.

The above-mentioned inventions according to claims 1 to 7 are particularly suitable for the display application according to claim 8, and are leap forward in practicality, safety, energy saving, attention, etc. Performance can be improved.

Further, according to the inventions described in claims 9, 10 and 11, improvement of appearance in a bright place and diversification of surface finish are realized, and colorful colored light is obtained in a dark place. In addition to having the effect of greatly increasing the variety in design and having rich expressive power and excellent light emission characteristics, it has the effect of being able to produce in a short time and at low cost.

[Brief description of drawings]

FIG. 1 is a sectional view showing a first embodiment of the present invention.

FIG. 2 is a plan view showing a first embodiment of the present invention.

FIG. 3 is a sectional view showing a second embodiment of the present invention.

FIG. 4 is a plan view showing a second embodiment of the present invention.

FIG. 5 is a sectional view showing a third embodiment of the present invention.

FIG. 6 is a plan view showing a third embodiment of the present invention.

FIG. 7 is a plan view showing a fourth embodiment of the present invention.

FIG. 8 is a plan view showing a fifth embodiment of the present invention.

[Explanation of symbols]

1 ... Dial base 2 ... Undercoat printing or undercoating 3 ... Luminous paint 4 ... Printing ink (screen printing for a wide range) or translucent film 5 ... Printing ink (thin line 6) Printing ink (light color) 7 ... Printing ink (dark color) 8 ... Luminous paint (color A) 9 ... Luminous paint (color B) 10 ... Luminous paint (Color C)

Claims (11)

[Claims] 1. A display device with a luminescent coating, comprising: a luminescent coating layer formed on substantially the entire surface of a base; and a light transmitting layer formed on an upper surface of the luminescent coating layer. 2. The display device with a luminescent coating according to claim 1, wherein the luminescent coating layer and the light transmitting layer have different color tones. 3. A display device with a luminous paint according to claim 1, further comprising a light reflection layer formed between the base and the luminous paint layer. 4. The display device with a luminescent coating according to claim 1, further comprising a light impermeable layer formed on a part of an upper surface of the light transmitting layer. 5. The display device with a luminescent coating according to claim 1, wherein the light transmission layer is composed of a plurality of substances having different light transmission properties. 6. The display device with the luminous paint according to claim 3, wherein the light reflection layer is composed of a plurality of substances having different light reflectivities. 7. The display device with a luminescent coating according to claim 1, wherein the luminescent coating layer is composed of a plurality of luminescent coatings having different color tones or emission colors. 8. The display device with a luminescent paint according to claim 1, wherein the display object is a timepiece dial, a sign, or a signboard. 9. A light reflecting layer is formed on the base, and then a luminescent coating layer is formed on substantially the entire surface of the light reflecting layer, and a light transmitting layer is further formed on the upper surface of the luminescent coating layer. Manufacturing method of display device with luminescent paint. 10. The method for manufacturing a display device with a luminescent coating according to claim 9, wherein a light impermeable layer is formed on a part of an upper surface of the light transmitting layer. 11. The method for manufacturing a display device with a luminescent coating according to claim 9, wherein the light transmitting layer is formed by printing and the number of times of printing is partially different.