JP4522712B2 - Clock dial and portable clock equipped with the same - Google Patents

Description

  The present invention relates to a timepiece dial of a portable timepiece, and more particularly to a timepiece dial using a shell or a precious stone and a portable timepiece having the same.

  Many watch dials using shells and precious stones are made. By using shellfish and precious stones, the unique colors of shellfish and precious stones appear, giving the watch a beauty and luxury.

  In addition, a number of clock dial technologies using shells and precious stones have been disclosed. Among them, there is a technique disclosed in Patent Document 1 shown below as a design change.

JP-A-6-43264

  FIGS. 11 and 12 are a schematic perspective view (FIG. 11) and a cross-sectional view (FIG. 12) of the shell curved face dial as shown in Patent Document 1 above. The shell curved surface dial 1 here is a shell curved surface dial having a flat surface in the 9 o'clock to 3 o'clock direction and a curved surface in the 12 o'clock to 6 o'clock direction, and the curved shell substrate 3 and the curved metal substrate 2 are adhered to each other. The structure bonded through the agent 4 is taken. Two feet 5 are brazed to the lower surface of the metal substrate 2 in the 9 o'clock to 3 o'clock direction, and the time character 6 is formed on the upper surface of the shell substrate 3 by printing.

  The shell curved face dial 1 is manufactured by sticking a thin flat metal substrate 2 with a brace of feet 5 and a flat shell substrate 3 with an adhesive 4 and then printing a time character 6 with a printing method. It is formed on the upper surface of the substrate 3 and then immersed in hot water of 60 ° to 80 ° for about 5 minutes to make the shell substrate 3 sufficiently soft. And the method of shape | molding in a curve by the press method after that is taken.

  As a result, it is said that as a result, it was possible to provide a shell dial having a design change without cracking the shell.

  Moreover, there exists the technique disclosed by the patent document 2 shown below as what improved the decorativeness by making it look like it combined several shellfish board | substrates with one shellfish board | substrate.

Japanese Patent Laid-Open No. 3-186789

  13, 14, and 15 are those shown in Patent Document 2, FIG. 13 is a plan view of a timepiece dial, and FIG. 14 is a schematic view of the timepiece dial in FIG. 13. The partial sectional view is shown. FIG. 15 is a sectional view showing a manufacturing process of the timepiece dial in FIG.

  This timepiece dial plate 10 has a shell substrate 12 such as a transparent white butterfly shell or an abalone shell, in which a colored resin layer 13 is formed on the entire lower surface of a metal substrate 11 made of a metal material such as phosphor bronze or white. Is fixed to the metal substrate 11 by the adhesive layer 14. The shell substrate 12 is partially formed with a discolored portion 12a by bleaching or dyeing, and has a structure in which a printed matter 15 such as time letters, marks, and indicators is provided on the upper surface.

The timepiece dial plate 10 is manufactured under the steps shown in FIG. First, a shell substrate 12 is manufactured by pressing a shell such as a transparent white butterfly shell or abalone shell into a dial shape (FIG. A). Next, a resist film 16 is formed on a portion other than the portion to be bleached or dyed by screen printing or the like (FIG. B), and bleached with H ₂ O ₂ or dyed with an oily or aqueous dye to change the color changing portion 12a. (FIG. C). Next, the resist film 16 is peeled off (FIG. D), and the colored resin layer 13 is printed on the lower surface (FIG. E). Then, the colored resin layer 13 formed on the shell substrate 12 and the metal substrate 11 made of phosphor bronze or white and white are fixed through an adhesive layer 14 such as an adhesive tape or an adhesive (f figure). Finally, A printed material 15 such as a time letter, a mark, and an index is printed on the upper surface of the shell substrate 12 (FIG. G) to complete the watch substrate 10.

  By adopting such a structure, the color tone in the color changing portion 12a of the shell substrate 12 and the color tone in the portion other than the color changing portion 12a are different, and a plurality of shell substrates are combined while being a single shell substrate. It is said that a dial with rich decorativeness can be obtained. Further, since various combinations of the colors of the color tone of the colored resin layer 13 and the color tone of the discolored portion 12a of the shell substrate 12 are possible, a variety of decorative dials are obtained.

  However, under the technique disclosed in the above-mentioned Patent Document 1, there is a shell dial that has a different design as the shell substrate is curved as compared to a dial plate that is conventionally formed using a flat shell substrate. Although obtained, the adhesive easily peels off due to the difference in thermal expansion coefficient between the shell and metal, and the problem arises that the shell substrate and the metal substrate peel off in a long time. In addition, the unique patterns and colors of the shellfish do not change significantly compared to when they are flat, and it is now felt that there is a lack of changes in color and decoration.

  Further, under the technique disclosed in Patent Document 2, a color tone that is a combination of the color tone of the colored resin layer, the color tone of the shell substrate, and the color tone of the discolored portion of the shell substrate appears. When viewed on a single dial, two types of color tone appear: a color tone that appears at the discolored portion and a color tone that appears at a portion other than the discolored portion. Therefore, the contents of the two kinds of different colors make it look like two kinds of shellfish are used. However, when each individual color tone is taken, there is no change in the color tone and a uniform color tone is exhibited. For this reason, the color change is poor.

  The present invention has been made in view of such problems, and in a dial for timepieces using shells or precious stones, the dial substrate and shells or precious stones are not peeled off, The purpose is to obtain a dial with subtle changes in the unique colors of precious stones, which will enhance the decoration.

As a means for solving the above-mentioned problems, a timepiece dial according to claim 1 of the present invention is a case in which a dial plate and a light-transmitting substrate that is adhesively fixed to the upper surface of the dial substrate with an adhesive material are used as a case. In the timepiece dial for a portable timepiece attached to the inside of the watch, the dial substrate has a concave portion formed in the center periphery, and the light-transmitting substrate has a spherical surface or an aspherical surface excluding a flat surface. The bottom surface of the light-transmitting substrate is provided with a backing color film, and the flat bottom surface of the light-transmitting substrate is interposed through the backing color film. The dial plate is adhesively fixed in the concave portion of the dial substrate, and the outer periphery of the outer periphery of the dial substrate is hidden from above when assembled in the case.

The timepiece dial according to claim 2 of the present invention is characterized in that the light-transmitting substrate is made of a shell or a precious stone made of any one of white butterfly shell, abalone shell, and ako shellfish. Is.

  Further, in the timepiece dial according to claim 3 of the present invention, the backing color film provided on the flat lower surface of the light-transmitting substrate is white, black, blue, orange, gold, silver. It is characterized by being a color film having at least one kind of color.

  The timepiece dial described in claim 4 of the present invention is characterized in that the surface of the light-transmitting substrate that forms the spherical or aspherical surface is a glossy surface.

The timepiece dial according to claim 5 of the present invention is characterized in that the aspherical shape of the light-transmitting substrate is a wave shape.

  A timepiece dial according to claim 6 of the present invention is characterized in that a fluorescent agent is dispersed in a backing color film provided on a flat lower surface of the light-transmitting substrate.

Further, in the timepiece dial according to claim 7 of the present invention, the dial substrate is provided with the light-transmitting substrate in the concave portion in the central peripheral portion and a pattern having irregularities in the outer peripheral region around the concave portion. Is provided.

The timepiece dial according to claim 8 of the present invention is characterized in that the dial substrate is light-transmissive.

The timepiece dial according to claim 9 of the present invention is characterized in that the light-transmitting substrate is made of any one of opal, chalcedoni, ruby, sapphire, jade and jade.

The portable timepiece according to claim 10 of the present invention are those comprising the timepiece dial according to any one of the claims 1 to 9.

Under the invention described in claim 1 of the present invention, a light-transmitting substrate having a flat bottom surface and a spherical surface or an aspheric shape excluding a flat surface is fixed to a recess provided in the central peripheral portion of the dial substrate. Is doing. Therefore, the light transmissive substrate can be provided in a narrow gap between the pointer and the dial. Further, the light-transmitting substrate are different depending on the location the thickness because it forms a non-spherical shape except the spherical or flat surfaces. Come different light transmittance due to the difference in the thickness. Further, since the flat lower surface of the light transmissive substrate is provided with a backing color film, can be color of the backing color film is viewed from the upper surface side of the light transmitting substrate, a light transmitting substrate is a place Therefore, since the transmittance is different, the intensity of the reflected light from the backing color film appears, and the shade of the color of the color film appears. For example, if the upper surface of the light-transmitting substrate has a convex spherical surface, the central portion has a light color and the color gradually increases toward the outer peripheral portion. On the contrary, when the concave spherical surface is formed, the outer peripheral portion is light, and a deeper color appears toward the center portion. Thus, in the case of a spherical surface, the color changes gently.

Moreover, under the invention described in claim 2 of the present invention, the light-transmitting substrate is made of shell or precious stone made of any one of white butterfly shell, abalone shell and ako shellfish. Shellfish and precious stones have a beauty with color and luster to the unique noble feeling with permeable. By using shellfish or precious stones, it is possible to show the color and beauty of the watch dial, which is combined with the effect of claim 1 and gives a sense of nobility and luxury .

  Further, under the invention described in claim 3 of the present invention, white, black, blue, orange, gold, silver or the like is selected as the color of the backing color film. These color colors are suitable for enhancing the colors of shellfish and precious stones, and also have the effect of giving a sense of incongruity and luxury as a watch dial.

  Further, under the invention described in claim 4 of the present invention, the surface forming the spherical or aspherical shape of the light transmitting substrate is a glossy surface. Due to the glossiness, unique colors such as shellfish and precious stones can be clearly seen, and the light and dark colors appearing from the backing color film can be clearly and clearly visible.

Further, under the invention described in claim 5 of the present invention, a wave shape is selected as the shape of the aspheric surface. In the case of a wave shape that progresses in parallel, dark and light colors appear in succession. Moreover, the colors appear as they change gradually rather than suddenly. Therefore, a subtle color change is born . And it is easy to process and can be manufactured at a relatively low cost.

  Moreover, under the invention described in claim 6 of the present invention, the fluorescent agent is dispersed in the backing color film. Since the light transmitted through the light-transmitting substrate is received and emitted, the color becomes brighter and looks vivid. The color becomes very clear.

Further, under the invention described in claim 7 of the present invention, an uneven pattern is provided in the outer peripheral region around the concave portion except that the light transmitting substrate is provided in the concave portion in the central peripheral portion of the dial substrate. By providing this pattern, the decorativeness of the dial can be further enhanced. Further, it produces an effect that helps to further enhance the color appearing at the light-transmitting substrate, and further enhances the sense of quality.

Moreover, under the invention described in claim 8 of the present invention, the dial substrate can be used as a dial for a solar cell timepiece or an EL (electroluminescence) timepiece by imparting light transmittance to the dial substrate .

Also, under the invention described in claim 9 of the present invention, opal on the light transmitting substrate, Karusedoni have chosen ruby, sapphire, jade, any one of amber. These precious stones are permeable and can be processed relatively easily. Opal, chalcedony, and cocoon have unique patterns and colors, and ruby has unique colors. Further, sapphire, etc. jade are those transmittance has a very high properties.

  And in a portable watch incorporating a dial using such shellfish or precious stones, the color tone of the backing color film enters the pattern and color of shells and precious stones according to changes in thickness etc. Bringing subtle color changes, beautiful colors of shells and precious stones appear on the dial. As a result, it is possible to obtain a portable watch that is rich in decorativeness and gives a sense of nobility and luxury.

  Hereinafter, the best embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a plan view of a portable timepiece using a timepiece dial according to a first embodiment of the present invention, FIG. 2 is a cross-sectional view of the main part in FIG. 1, and FIG. 3 is a first embodiment of the present invention. The principal part sectional drawing of the dial for timepieces concerning is shown. FIG. 4 is a plan view of a portable timepiece using a timepiece dial according to the second embodiment of the present invention, FIG. 5 is a cross-sectional view of the main part in FIG. 4, and FIG. The perspective view of the dial for timepieces concerning an embodiment is shown. FIG. 7 is a cross-sectional view of main parts of a timepiece dial according to a third embodiment of the present invention, and FIG. 8 is a cross-sectional view of main parts of a timepiece dial according to a fourth embodiment of the present invention. FIG. 9 is a plan view of a timepiece dial according to a fifth embodiment of the present invention, and FIG. 10 is a sectional view taken along line DD in FIG.

  1 and 2, the portable timepiece 30 using the timepiece dial according to the first embodiment of the present invention includes a timepiece dial 40 and a movement 38 attached to the inside of the case 31 via an inner frame 37. A pointer 34 indicating an hour hand and a minute hand attached to a pointer shaft of the movement 38, a cover glass 32 and a back cover 36 covering them, a band 33 attached to a fitting portion of the case 31, and a crown 35 attached to a side surface of the case 31. , Etc. The only significant difference from the conventional technology of the portable timepiece 30 is the timepiece dial 40, and the other components are of the same specifications as the technology that has been disclosed in the past. Further, the timepiece dial 40 here is the timepiece dial according to the first embodiment of the present invention, and the dial substrate 41, the light transmissive substrate 43, the time character 45, and the like are the main components. The details will be described with reference to FIG. The timepiece dial 40 in FIGS. 1 and 2 shows only visible element parts.

  FIG. 3 shows a cross-sectional view of the main part of the timepiece dial according to the first embodiment of the present invention. As shown in FIG. 3, the timepiece dial 40 includes a dial substrate 41 having a center hole 41b for attaching a pointer, a light-transmitting substrate 43 provided on the upper surface of the dial substrate 41, and having a central hole 43b. A backing color film 42 provided on the flat lower surface of the light-transmitting substrate 43 and a time character 45 printed and formed at a predetermined position on the outer periphery of the light-transmitting substrate 43 are configured as main components. Then, the backing color film 42 on the lower surface of the light-transmitting substrate 43 and the dial plate substrate 41 are adhesively fixed via an adhesive 44 to form an integrated structure. In FIG. 3, the outer shape of the light-transmitting substrate 43 is drawn slightly smaller than the outer shape of the dial plate substrate 41. It has the same meaning as that provided on the entire dial face.

  The dial substrate 41 is made of a metal such as phosphor bronze or white and is subjected to a surface treatment such as plating or painting. In this embodiment, the light-transmitting substrate 43 uses shells such as white butterfly shellfish, abalone shellfish, ako shellfish, etc., and a small hole 43b for attaching a pointer is provided in the center, and the upper surface 43a is the center. Convex spherical shape toward the part. The upper surface 43a is polished to become a glossy surface. White butterfly shellfish, abalone shellfish, akoya shellfish, etc. have a slightly yellowish white luster color and emit a unique rainbow-colored brilliant color. In particular, when the surface is glossy, it appears clearly. In addition, in this embodiment, the backing color film 42 provided on the flat lower surface of the light-transmitting substrate 43 is mixed with a white pigment in a binder such as a transparent urethane resin, epoxy resin, or acrylic resin, and converted into an ink. The color film is formed by the method. Therefore, the color film 42 has a white color tone. In this embodiment, the time character 45 is formed by a printing method using black ink. Since it is provided on the upper surface of the light-transmitting substrate 43 having a convex spherical surface, a method that can be formed along the spherical surface is employed. The adhesive 44 is used to bond the dial substrate 41 and the light transmissive substrate 43 together. This may be an adhesive.

The timepiece dial 40 having the above-described configuration is provided with a white backing color film 42 on the lower surface of a shell having a slightly yellowish tint and a white glossy tone. For this reason, since the shell has transparency, the yellow tint of the shell disappears, or the yellow tint disappears and the white color increases, so that the glitter color can be seen vividly. Further, since the upper surface of the shell has a convex spherical surface, the outer peripheral portion is thin, and the thickness increases toward the center portion. As a result, the outer peripheral portion has a high light transmittance, and the transmittance decreases toward the center portion. For this reason, the white color of the color film 42 is well reflected on the outer periphery of the shell, the yellowish color disappears completely, the white gloss is increased, and the glitter color looks even more vivid. On the other hand, since the reflection of the color film 42 gradually lowers as it goes to the center, the yellowish color gradually remains, and the vividness of whiteness and brilliant colors appears to have fallen slightly from the outer periphery. Come. In this way, the white gloss and glitter color of the shells appear to change slightly like a gradation.

  The shell's unique white luster and bright colors appear clearly, and the dials that change delicately like gradations are very beautiful and noble, making them feel even more luxurious. And, the above-mentioned features appear in the portable watch 30 incorporating such a watch dial 40, and feel the preciousness and sense of quality that cannot be obtained from a conventional portable watch using a flat shell dial. Let In the above embodiment, the outer shape of the light-transmitting substrate 43 is visible when incorporated in the watch case 31, but it is needless to say that the outer shape of the dial substrate 41 may be the same size. .

  Next, a timepiece dial according to a second embodiment of the present invention will be described with reference to FIGS. 4, 5, and 6. 4 is a plan view of a portable timepiece using a timepiece dial according to a second embodiment of the present invention, FIG. 5 is a cross-sectional view of the main part in FIG. 4, and FIG. 6 is for a timepiece according to the second embodiment of the present invention. A perspective view of the dial is shown.

  4 and 5, the portable timepiece 50 using the timepiece dial according to the second embodiment of the present invention includes the timepiece dial 60 and the movement 58 attached to the inside of the case 51 via the middle frame 57. A pointer 54 indicating the hour and minute hands attached to the pointer shaft of the movement 58, a solar cell 59 attached to the upper part of the movement 58, a cover glass 52 and a back cover 56 covering them, and a band attached to a fitting portion of the case 51 53, a crown 55 attached to the side surface of the case 51, and the like. The structure of the portable timepiece 50 is greatly different from the structure of the portable timepiece 30 described in the first embodiment. A solar cell 59 is attached to the upper part of the movement 58 on the lower surface side of the dial 60, so that the portable timepiece with solar cell is formed. It is that. Here, the timepiece dial 60 shows the timepiece dial according to the second embodiment of the present invention, and the other components have the same specifications as the technology that has been disclosed in the past. Therefore, detailed description here is omitted. The timepiece dial plate 60 is constituted by a dial plate substrate 61, a light transmissive substrate 63, a backing color film 62, a time character 65, and the like as main components, and details thereof will be described with reference to FIG. 4 and FIG. 5, only the visible element parts are taken up and described.

  The timepiece dial 60 according to the second embodiment of the present invention is shown in FIG. 6 in that a dial substrate 61 and a light-transmitting substrate 63 provided on the upper surface side of the dial substrate 61 and substantially in the entire area where the dial can be seen. And a backing color film 62 provided on the flat lower surface of the light-transmitting substrate 63, and a time character 65 printed and formed at a predetermined position on the outer periphery of the light-transmitting substrate 63 are configured as main components. . Then, the backing color film 62 on the lower surface of the light-transmitting substrate 63 and the dial substrate 61 are adhesively fixed via an adhesive 64 to form an integrated structure.

The dial substrate 61 is made of a transparent acrylic resin or polycarbonate resin and has transparency. The light-transmitting substrate 63 is made of an opal precious stone, and as shown in the drawing, has a cylindrical shape with a convex shape on the upper surface having a long lateral width and a short longitudinal direction. Therefore, the thickness at the 3 o'clock to 9 o'clock line is the thickest, and the edges at 6 o'clock and 12 o'clock are the thinnest. The upper surface 63a is polished to become a glossy surface. Although this opal precious stone has various colors, this embodiment uses a blue opal that emits a bluish green color. The pattern and color are mottled to form a unique pattern color, which can be said to be a very precious stone with a rich decoration. In the present embodiment, the backing color film 62 provided on the flat lower surface of the light-transmitting substrate 63 is printed using orange ink and finished in an orange tone. The printed film thickness is slightly reduced to make the color film 62 permeable. The light transmittance including the opal precious stone and the color film 62 is set to a transmittance that does not hinder solar cell power generation. Recent solar cells have very good power generation efficiency, and there are some cells that can sufficiently generate power even with a light transmittance of 15 to 20%. The time character 65 is formed by printing using black ink, as in the first embodiment. The adhesive 64 is transparent. Incidentally, the light-transmitting substrate 63 shown in FIG. 6 is drawn slightly smaller in outer shape than the dial substrate 61, but this light-transmitting substrate is the same as in the first embodiment shown in FIG. 63 is provided over the entire dial plate that is visible from above when incorporated in the watch case 51, and has the same meaning as provided over the entire dial plate.

  In the timepiece dial plate 60 having the above-described configuration, the light-transmitting substrate 63 made of blue opal precious stones has a low light transmittance in the thick portion, so that the reflected light from the orange-colored backing color film 62 is also reflected. It is less affected by the orange tone, and the blue-green color does not change much. On the other hand, since the light transmittance increases as the thickness decreases, the reflected light from the orange-colored backing color film 62 also increases, and the bluish green color becomes lighter due to the influence of the orange color. The color changes to greenish. In this way, the color of the precious stone changes slightly like a gradation.

  Here, the material used for the light-transmitting substrate 63 and the color tone of the backing color film 62 provided on the lower surface thereof must be selected with a considerable relationship. In the present embodiment, blue opal precious stones are selected as the light-transmitting substrate, and orange color is selected as the backing color film 62. This is because the blue opal precious stone's bluish green color was aimed to relieve the bluishness in orange. By doing so, the color of the dial changes to a rather bright direction, making it feel calm.

  When a precious stone is selected as the light-transmitting substrate, the precious stone must be selected in consideration of the shape of the substrate, the difficulty of processing, and the color of the precious stone. Opal, chalcedony, ruby, sapphire, jade, jade, etc. are suitable for the spherical shape described in the first embodiment, the cylinder shape of the present embodiment, and the waveform shape described in the embodiments described later. Can be raised. In addition, it is desirable to select appropriately according to the color of the precious stone that uses the color tone of the backing color film formed on the lower surface of the light-transmitting substrate and the desired design, but white, blue, orange, gold, silver, Black or the like is suitable for use as a dial for a portable watch because it provides a feeling of calmness, a feeling of metal, a feeling of brightness, and the like.

  The timepiece dial 60 of this embodiment has a backing color film 62 formed on a flat lower surface of a light-transmitting substrate 63, and an adhesive 64 on a flat surface of a dial substrate 61 made of plastic. Bonded and fixed. That is, the flat surfaces are joined to each other. When the flat surfaces are bonded to each other as described above, the problem of peeling off at the bonded surfaces hardly occurs even if there is a slight difference in thermal expansion coefficient. The same can be said for the case where the metal dial plate described in the first embodiment and the shell are bonded together.

Next, a timepiece dial according to a third embodiment of the present invention will be described with reference to FIG. FIG. 7 shows a cross-sectional view of an essential part of a timepiece dial according to a third embodiment of the present invention. As shown in FIG. 7, the timepiece dial 70 includes a dial substrate 71 made of a metal having a circular recess 71a formed at the center peripheral portion, and a circular recess of the dial substrate 71 having a corrugated uneven shape on the upper surface. On the light-transmitting substrate 73 made of precious stones embedded in 71 a, the backing color film 72 provided on the flat lower surface of the light-transmitting substrate 73, and the hairline uneven pattern 71 c on the upper surface of the outer peripheral area of the dial substrate 71 The time character 75 attached to is a main component. The light-transmitting substrate 73 provided with the backing color film 72 on the lower surface is embedded in the circular recess 71a of the dial substrate 71 and has a structure in which it is adhesively fixed to the dial substrate 71 via the adhesive 74. Yes.

  Here, the dial substrate 71 is made of a metal such as phosphor bronze or white, and has a round outer periphery and a circular recess 71a formed at the center periphery. Moreover, the upper surface part other than the recessed part 71a is given the hairline process, and the uneven | corrugated pattern 71c of a hairline pattern is provided. And surface treatments, such as Ni and Pt plating, are given. The light-transmitting substrate 73 is made of precious stone, and in this embodiment, red ruby is used. The outer diameter is circular, and the upper surface 73a is finished in a parallel corrugated shape with a relatively large unevenness difference. Further, the upper surface 73a is polished to be a glossy surface. The backing color film 72 provided on the flat lower surface of the light-transmitting substrate 73 is formed of an aluminum vapor deposition film in the present embodiment, and the color has a white color. The time character 75 is made of metal and is bonded and fixed at a predetermined position via an adhesive. In this embodiment, the hairline pattern upper surface is directly bonded and fixed. However, a transparent protective film may be formed on the hairline pattern upper surface and bonded and fixed on the protective film.

  The timepiece dial 70 having the above-described structure is exposed to the action of the white backing color film 72, and the color of the ruby precious stones appears sharply. And thin areas appear as pale colors. And the shades of color are connected in parallel. In addition, the tint does not change abruptly, but a subtly changed color appears with a continuous color in which the color gradually increases and the color gradually decreases. In this way, the color of the ruby precious stones with subtle changes in shades appears clearly, and the decorativeness becomes richer, bringing out even higher nobility. In addition, it adds a three-dimensional effect that can be felt from the unevenness caused by waves, and a richness of decorativeness due to the hairline pattern.

  In the present embodiment, an aluminum vapor deposition film is used as the backing color film, but a similar effect can be obtained even with a silver metal vapor deposition film or a white printed film. In this way, when a backing color film having a white color is used, the color of the light-transmitting substrate appears with a light and shade.

  Next, a timepiece dial according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 8 shows a cross-sectional view of a main part of a timepiece dial according to a fourth embodiment of the present invention. As shown in FIG. 8, the timepiece dial 80 has a dial substrate 81 made of plastic with a concave portion 81a formed in a circular shape in the center periphery, and a circular surface of the dial substrate 81 having a concave upper surface 83a. On the light transmitting substrate 83 made of shellfish embedded in the recess 81 a, the backing color film 82 provided on the flat lower surface of the light transmitting substrate 83, and the uneven pattern 81 c on the upper surface of the outer peripheral area of the dial substrate 81 The formed transparent protective film 86 and the time character 85 attached to a predetermined position on the protective film 86 constitute the main components. The light-transmitting substrate 83 provided with the backing color film 82 on the lower surface is embedded in the circular recess 81a of the dial substrate 81 and has a structure in which the dial substrate 81 is adhesively fixed through the adhesive 84. Yes. The timepiece dial 80 is finished as a dial for solar cells.

Here, the dial substrate 81 is made of a transparent plastic resin such as an acrylic resin or a polycarbonate resin, and has a round outer periphery and a concave portion 81a formed in a circular shape at the center peripheral portion. In addition, a concavo-convex pattern 81c is provided on the upper surface portion other than the concave portion 81a. The concave / convex pattern 81c is provided to enhance decorativeness, and can be selected according to the design such as a lattice pattern, a satin pattern, an Asahikari pattern, a circle pattern, a stripe pattern, a stitch pattern, or a geometric pattern. it can. In addition, since the concave / convex pattern 81c has a function of dispersing the reflected light from the solar cell, it also has an effect of reducing the color tone of the solar cell. The dial substrate 81 is molded by an injection molding method in a state where the concave portions 81a and the concave / convex patterns 81c are provided. The light-transmitting substrate 83 is formed of shells such as white butterfly shells, abalone shells, ako shells and the like, and is finished to have a spherical shape with a circular outer diameter and a concave upper surface 83a. The upper surface 83a is finished to a glossy surface by polishing. The backing color film 82 provided on the flat lower surface of the light-transmitting substrate 83 is formed of a white printing film in this embodiment, and its thickness is relatively thin and has transparency. The light transmittance including the light-transmitting substrate 83 made of shellfish and the color film 82 is set to a transmittance that does not hinder solar cell power generation. The protective film 86 is formed by a printing method using a transparent urethane resin, acrylic resin, epoxy resin, or the like. This protective film 86 is provided to protect the concave / convex pattern 81c and at the same time facilitate adhesion of the time character 85. The time character 85 is made of metal, and can be formed by an electroforming method or a machining method. This time character 85 is bonded and fixed at a predetermined position on the protective film 86 through an adhesive.

  In the timepiece dial plate 80 having the above-described configuration, the same result as that described in the first embodiment appears in the color of the light-transmitting substrate 83 made of shellfish. However, since the light-transmitting substrate 83 of the shell used in this embodiment has a concave spherical surface, the outer peripheral portion is thicker and becomes thinner toward the central portion. Accordingly, the transmittance at the outer peripheral portion is low, and the transmittance increases toward the central portion. Therefore, the whiteness and the vividness of the bright color appear better at the central portion than at the outer peripheral portion. That is, the central portion and the outer peripheral portion appear to be opposite to the state described in the first embodiment. The whiteness and brilliant colors of the shells appear to change slightly like a gradation. In addition, the watch dial 80 as a whole is richly decorated in combination with the concavo-convex pattern 81c and the like, further increasing the sense of quality.

  Next, a timepiece dial according to a fifth embodiment of the present invention will be described with reference to FIGS. FIG. 9 is a plan view of a timepiece dial according to a fifth embodiment of the present invention, and FIG. 10 is a sectional view taken along line DD in FIG. 9 and 10, the timepiece dial 90 according to the fifth embodiment of the present invention includes a dial substrate 91 made of plastic having a rectangular outer shape and a rectangular recess 91a in the center region, A light-transmitting substrate 93 made of a shell having a concave cylindrical shape embedded in a rectangular recess 91a of the dial substrate 91, and a backing color film provided on the flat lower surface of the light-transmitting substrate 93 92 and a time character 95 attached to a predetermined position of the outer peripheral region of the dial substrate 91 are configured as main components. Then, a light-transmitting substrate 93 provided with a lining color film 92 on the lower surface is embedded in the concave portion 91a of the dial substrate 91, and is adhered and fixed through an adhesive 94. The timepiece dial 90 is finished as a dial for solar cells.

  Here, the components constituting the timepiece dial 90 are greatly different from the components in the fourth embodiment described above, that the dial substrate 91 has a square outer shape and a concave portion 91a shape. There is no uneven pattern on the upper surface other than the recesses 91a, shells are used for the light-transmitting substrate 93, but the outer shape is square and the top surface is concave, and the light-transmitting substrate 93 That is, the fluorescent agent 92b is dispersed in the backing color film 92 made of a white printed film provided on the lower surface.

  The light-transmitting substrate 93 made of shellfish has a cylindrical shape with a concave upper surface. This shows a shape opposite to the (convex) cylinder shape, that is, a scalloped shape, which is thicker on the outside and thinner toward the center. Accordingly, in the light-transmitting substrate 93 shown in FIG. 9, the 3 o'clock to 9 o'clock line portion is the thinnest and has a uniform thickness, and the end portions in the directions of the 6 o'clock side and the 12th side are the thickest. The thickness is uniform.

  Next, the backing color film 92 is formed by printing with ink containing a white pigment and a white fluorescent agent 92b. Accordingly, the lining color film 92 is provided in a state where the white fluorescent agent 92b is dispersed.

The light transmittance including the light transmissive substrate 93 made of shellfish and the lining color film 92 is set to a transmittance that does not hinder the power generation of the solar cell.

In the timepiece dial plate 90 having such a configuration, since the fluorescent agent emits light upon receiving the light transmitted through the light-transmitting substrate 93, the shell color of the light-transmitting substrate 93 looks very bright and clear. Furthermore, under the action of the white fluorescent agent and the white pigment, the yellowish color of the shell becomes very thin, or it is completely erased and the white gloss whiteness increases, and the shell's unique glitter color is beautiful, It becomes bright and clear. This white luster and brilliant color gradually change depending on the thickness of the shellfish. The thinnest part of the 3 o'clock to 9 o'clock line is the most vivid in whiteness and bright colors, and the vividness gradually changes slightly as it goes to the 6 o'clock side or the 12 o'clock side. By mixing the white fluorescent agent, the white color becomes brighter and brighter, so that the dial is brighter, and the glitter color of the shellfish is seen more vividly, and nobleness and luxury appear.

  Although the timepiece dial using shells and precious stones as the light-transmitting substrate has been described in detail, the portable timepiece using this timepiece dial is the timepiece itself as described in the first embodiment. This increases the value of the watch and produces the effect of increasing the nobility and luxury of a watch. Then, it is possible to provide a watch with a new design that could not be seen in the past.

  Until now, the explanation has been made by using shells and precious stones for the light-transmitting substrate. However, the present invention is not limited to shellfish or precious stones. Similar results can be obtained with colored glass or plastic.

  Further, in the description of the embodiment of the present invention, a timepiece dial in a portable timepiece with a mechanical function or a timepiece with a solar cell has been described. This dial is a feature of a portable timepiece with EL (electroluminescence). It can also be applied as a dial.

It is a top view of the portable timepiece using the timepiece dial according to the first embodiment of the present invention. It is principal part sectional drawing in FIG. It is principal part sectional drawing of the timepiece dial which concerns on 1st Embodiment of this invention. It is a top view of the portable timepiece using the timepiece dial according to the second embodiment of the present invention. It is principal part sectional drawing of the portable timepiece in FIG. It is a perspective view of the dial for timepieces concerning a 2nd embodiment of the present invention. It is principal part sectional drawing of the timepiece dial which concerns on 3rd Embodiment of this invention. It is principal part sectional drawing of the timepiece dial which concerns on 4th Embodiment of this invention. It is a top view of the dial for timepieces concerning a 5th embodiment of the present invention. It is DD sectional drawing in FIG. It is a schematic perspective view of the shell curved-surface dial plate shown by patent document 1. FIG. It is sectional drawing of the shell curved surface dial in FIG. FIG. 10 is a plan view of a timepiece dial plate shown in Patent Document 2. It is principal part sectional drawing of the timepiece dial in FIG. It is sectional drawing which shows the manufacturing process of the dial for timepieces in FIG.

Explanation of symbols

30, 50 Cellular watch 31, 51 Case 32, 52 Cover glass 33, 53 Band 34, 54 Pointer 35, 55 Crown 40, 60, 70, 80, 90 Clock dial 41, 61, 71, 81, 91 Dial Substrate 42, 62, 72, 82, 92 Backing color film 43, 63, 73, 83, 93 Light transmissive substrate 44, 64, 74, 84, 94 Adhesive 45, 65, 75, 85, 95 Time character 86 Protection film

Claims (10)

In a timepiece dial for a portable timepiece in which a dial substrate and a light-transmitting substrate adhered and fixed to the upper surface of the dial substrate with an adhesive material are attached to the inside of the case,
The dial substrate is formed with a concave portion at the center periphery, and the light-transmitting substrate has a spherical surface or an aspherical surface excluding a flat surface and a lower surface having a flat surface. A backing color film is provided on the flat lower surface of the substrate, and the flat lower surface of the light-transmitting substrate is adhesively fixed in the concave portion of the dial substrate through the backing color film. The timepiece dial is characterized in that when assembled in the case, the outer periphery of the dial substrate is hidden from above . 2. The timepiece dial according to claim 1, wherein the light-transmitting substrate is made of a shell or a precious stone made of any one of white butterfly shell, abalone shell, and akoya shellfish. The backing color film provided on the flat lower surface of the light-transmitting substrate is a color film having a color composed of at least one of white, black, blue, orange, gold, and silver. The timepiece dial according to claim 1 or 2. Timepiece dial according to any one of claims 1 to 3, characterized in that the surface forming the spherical or aspherical surface of the light transmitting substrate has become glossy surface. Timepiece dial according to the shape of the aspherical surface of the said light transmitting substrate is any one of claims 1 4, characterized in that it consists of corrugated. Timepiece dial according to any one of claims 1-5, characterized in that the fluorescent agent is dispersed in the backing color film provided on the flat lower surface of the light transmitting substrate. The dial board, the light-transmitting substrate provided with the concave portion around the center portion, one of 6 claim, wherein in that a pattern of irregularities on the outer peripheral region around the recess 1 The dial for a clock described in one . The timepiece dial according to any one of claims 1 to 7 , wherein the dial substrate is light transmissive. The timepiece dial according to any one of claims 1 to 8, wherein the light-transmitting substrate is made of any one of opal, chalcedony, ruby, sapphire, jade, and coral. Watch for comprising the timepiece dial according to any one of the claims 1 to 9.

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