JPH0926484A - Fluorescent dial for time piece - Google Patents

Abstract

PURPOSE: To provide a fluorescent dial to be a dial which exhibits such pattern as graduation, character and picture and color under visible light and exhibits completely different pattern and color under ultraviolet. CONSTITUTION: An ultraviolet lamp is arranged within a time piece frame and a dial is arranged under the ultraviolet lamp. On the dialbase 1 having such formed patterns as dial graduation, figure 2 and picture 3, etc., another white semitransparent fluorescent resin layer which emits with different graduation, character and picture under ultraviolet irradiation from the graduation, figure 2 and picture 3 under visible light, is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent dial which has a function of allowing the surface of a timepiece dial to react to ultraviolet rays and emit light of a desired color.

[0002]

2. Description of the Related Art Conventionally, for molding a dial plate that emits light when irradiated with ultraviolet rays, (1) a resin made by mixing a dyeing resin having a certain color tone such as red, blue, and green with a phosphor that emits the same color or different colors. Therefore, the dial, the surface of which the scales, letters and pictures are formed, (2) The dial surface is simply red, blue,
For example, a light emitting layer is formed by coating a white phosphor resin that emits light with a certain color such as green.

[0003]

In the case of the above-mentioned conventional example (1), that is, the one obtained by mixing the phosphor with the dyeing resin of a certain color tone, the visible light (such as sun rays, electric lamps, fluorescent lamps, etc.) Under the illumination), the dyeing color tone is visible, and under ultraviolet light, the phosphor emission color tone appears. The color tone itself can be changed under visible light and ultraviolet light, but the pattern itself such as scales, numbers and patterns was not changed. Further, in the case of the conventional example (2), that is, what is simply coated with a white phosphor resin that emits a certain color tone of red, blue, green, etc., it is white under visible light and does not show numbers or patterns under ultraviolet light. A certain color of phosphor emission color appears. Currently, phosphors that emit light under UV irradiation have materials that emit light in various tones such as red, blue, green, yellow, and orange, and the colors when they emit light are very bright and vivid, giving them a very comfortable feeling. It is something that will be given. Not only the current time is displayed on clocks, but also decorative value is greatly demanded, and a wide variety of designs and colors have appeared on the market. Conventionally, the phosphor-emitting dial plate described above has a pattern, such as a scale, a number, and a pattern, which can change its color tone under visible light but has not changed the pattern itself. The present invention has been made in view of the above-mentioned problems, and its object is to show light emission with a completely different pattern and color tone under ultraviolet rays from a dial that exhibits a scale and letters and patterns and color tone under visible light. It is to make a dial.

[0004]

In order to achieve the above object, a fluorescent dial for a timepiece according to the present invention is made such that a phosphor-containing resin which emits light upon receiving ultraviolet rays is made semitransparent, and the white translucent phosphor A pattern such as a scale, a number and a pattern different from the pattern of the scale, the characters and the pattern is formed on the upper surface of the dial plate on which the patterns such as the scale, the characters and the pattern are already formed of resin. Further, an ultraviolet lamp as an ultraviolet light source is arranged inside the timepiece frame and at an appropriate portion where the dial can be irradiated.

[0005]

The white semitransparent phosphor resin prevents the phosphor resin layer from being visible under visible light, and allows the patterns such as scales, letters and pictures already formed on the lower layer to be clearly seen. On the contrary, in the dark, by turning on the ultraviolet lamp, the scale, numbers and patterns such as patterns made of phosphor resin can be seen to illuminate, and the scales, letters and patterns formed under the scale can be seen. It becomes invisible in the dark. Further, by applying phosphor resins having various shades in a combination of arrangements, several kinds of emission colors can be obtained at the same time. Also, by coating phosphor resins with different shades on top of each other,
The luminescent color of the overlapping portion is obtained as the mixed color, and luminescent colors of various colors can be obtained.

[0006]

EXAMPLES Examples will be described below with reference to the drawings. FIG.
It is sectional drawing which shows one Example of the dial with which the white translucent fluorescent substance resin layer was formed. An hour character 2 and a pattern 3 are formed on the upper surface of the dial plate substrate 1. Furthermore, a phosphor character 4 made of a white translucent phosphor resin is provided on the upper layer of the character 2 and the same fluorescent material is provided on the upper layer of the pattern 3. The body pattern 5 is formed. The character 2 and the phosphor character 4 are different in pattern. Regarding the color tone, the color of the character 2 is different from that of the phosphor character 4. Further, the pattern 3 and the phosphor pattern 5 are different in pattern, and the color tones of the pattern 3 and the phosphor pattern 5 are different. Under visible light, the phosphor character 4 and the phosphor pattern 5 are formed of a white translucent resin and therefore hardly visible, and the character 2 and the pattern 3 are visible in their patterns and their color tones.
Next, when the dial plate substrate 1 is irradiated with ultraviolet rays in the dark, the phosphor letters 4 and the phosphor pattern 5 appear to emit light according to their patterns and their color tones. The above is a case in which a character and a pattern have completely different patterns and color tones under visible light and ultraviolet light, but the same pattern may be used. The pattern and color tone may be freely selected.

FIG. 2 is likewise a sectional view of one embodiment. In FIG. 2, the phosphor pattern is formed by arranging the emission colors red 5a, blue 5b, and green 5c. It emits red, blue, and green luminescence at the same time when it is irradiated with ultraviolet rays, and exhibits a very wide variety of shades. The above arrangement colors are given as an example, and in practice, it is sufficient to freely consider the design colors and arrange them.

FIG. 3 is likewise a sectional view of one embodiment. FIG. 3 shows the formed luminous element pattern in which the fluorescent layers of the luminescent colors red 5a and yellow 5b partially overlap with each other, that is, the fluorescent weight layer portion 5c is formed. The fluorescent weight layer portion 5c has an emission color of orange, which is a mixed color of emission color red and emission color yellow. By superimposing the phosphor resin layers of different emission colors in this way, the emission color of the mixed color can be obtained.

FIG. 4 shows an embodiment in which characters and patterns are actually changed under visible light and ultraviolet light based on the above embodiment. Figure 4 (a) is a dial that can be seen under visible light.
Figure 4 (b) shows the dial that can be seen under UV light. On the surface of the dial shown in FIG. 4A, white translucent phosphor resin is used.
Form the pattern. Since the pattern of FIG. 4 (b) is made of white translucent resin, it cannot be seen under visible light.
You can see only the pattern. When irradiated with ultraviolet rays in the dark, the pattern shown in FIG. On the other hand, the pattern of FIG. 4 (a) cannot be seen at all. This embodiment has been described with reference to a typical pattern often used for a timepiece. However, the pattern can be made in any desired pattern, and the color tone can be arbitrarily selected and used. It can be said that different kinds of dials can be displayed.

Next, the arrangement of the ultraviolet lamp will be described with reference to FIG. FIG. 5 is a cross-sectional view in which the ultraviolet lamp 8 is arranged in the frame body 7. A dial 6 and a pointer 10 on which a white translucent phosphor resin layer is formed are attached to the frame body 7,
An ultraviolet lamp 8 is provided on the left and right of the upper side of the dial, and a reflector 9 is arranged in the frame 7 so as to surround the ultraviolet lamp 8 in order to enhance the ultraviolet irradiation efficiency. A cover glass 11 is fixed to the upper portion of the frame body 7. When the ultraviolet lamp 8 is turned on, the upper surface of the dial 6 is irradiated with ultraviolet rays. Furthermore, by forming a white translucent phosphor resin layer on the upper surface of the pointer, a further effect is exhibited.

[0011]

According to the present invention, a bright dial plate having a wide variety of patterns and a wide variety of fluorescent emission colors can be obtained under the irradiation of ultraviolet rays, which is completely different from a dial plate visible under visible light. Become a dial. In the dark, not only the time is grasped, but also the vivid colors that are clear and deep give a comfortable feeling. Also, the watch will not get tired by changing the dial design.

[Brief description of drawings]

FIG. 1 is a sectional view showing an example of a dial having a white translucent phosphor resin layer formed thereon.

FIG. 2 is a sectional view showing an example of a dial having a white translucent phosphor resin layer formed thereon.

FIG. 3 is a sectional view showing an example of a dial having a white translucent phosphor resin layer formed thereon.

[FIG. 4] An example in which the characters and patterns are changed under visible light and ultraviolet light

FIG. 5 is a cross-sectional view in which an ultraviolet lamp is arranged in the frame body.

[Explanation of symbols]

 1 Character board substrate 2 Character 3 Design 4 Phosphor character 5 Phosphor design 6 Character plate 7 Frame 8 Ultraviolet lamp 9 Reflector 10 Pointer 11 Cover glass

Claims (1)

[Claims] 1. A timepiece dial in which a fluorescent layer emits light by forming a fluorescent layer on the dial and placing an ultraviolet lamp inside the timepiece frame body to irradiate with ultraviolet rays, the scale,
A white semi-transparent phosphor resin layer that emits light with a scale different from the above-mentioned scale, letters, patterns, etc. under UV irradiation, on a dial substrate on which patterns of letters, patterns, etc. are formed. A fluorescent dial for watches, which is characterized by being formed.