JP2005103874A - Decorative component, its manufacturing method and electronic equipment with decorative component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To manufacture a decorative component from which a feel of glitter peculiar to a shell is perceived, at a low cost. <P>SOLUTION: In this method for manufacturing the decorative component, a shell is attached to a cavity of an injection mold, then a plastic display substrate 22 to which a shell pattern 22a is transferred, is manufactured by injection-molding a white resin and a homogeneous color tone to the color tone of a shell is created by forming an oxidized metal film 23 on the upper surface of the shell pattern 22a of the plastic display substrate 22. Since the display substrate 22 is formed of the white resin, the shell pattern 22a and the shell color tone appear conspicuously and the feel of homogeneous glitter to the shell is obtained. In addition, a white coating film is formed on the back of the plastic display substrate 22, when it is formed using a transparent resin. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a decorative part, and more particularly, to a decorative part using a shell pattern and a manufacturing method thereof.

  Traditionally, some decorative parts use shells. For example, there are earrings, pendants, and the like as ornaments, and there are items that are decorated with shells or the like on buttons for stopping clothes. In addition, shells are also used for display boards and the like to improve the decorativeness of portable watches. Some shells are used to decorate various nameplates and figurines. The decorative parts using these shells give the shell a distinctive luster and sparkle glittering radiance, giving it a high-class feel. Hereinafter, in describing the background art, the background art will be described by taking a display board for a watch using a shell as an example.

  Shellfish used for clock display boards are mainly white butterfly shells and abalone shellfish, but display boards using these shells are glossy, shining and shining, and a sense of luxury unique to shellfish appears. Let As one of timepiece display boards using shells, there are those disclosed in Utility Model Document 1 and Utility Model Document 2 shown below.

Utility Model Publication No. 7-20585 Registered Utility Model No. 30099946

  FIG. 10 shows a cross-sectional view of the main part of the timepiece display panel disclosed in the above-mentioned utility model document 1. In FIG. The timepiece display plate shown in the utility model document 1 is shown in FIG. 10 in which a decorative member 2 such as a shell, ceramic, or precious stone is pasted on a metal substrate 1, and a time character is formed on a hollow portion 2 a provided on the decorative member 2. The structure which provided the display members 3, such as a mark, on the upper surface of the metal substrate 1 via the leg 3a is shown.

  FIG. 11 is a cross-sectional view of the main part of the timepiece display plate disclosed in the utility model document 2. From FIG. 11, this timepiece display board is formed by patterning the display board base 11 having the legs 11 c, coloring it by plating, further forming a transparent protective film portion 12, and a shell product 14. The structure stuck through the adhesion part 13 which is a transparent adhesive is shown. Shell products 14 here are thin white butterfly shells, black butterfly shells, abalone shells and other shells that are joined to each other with a dozen to dozens of layers, and cut into shapes such as abbreviations, names, and marks. Is used.

  As decorative parts using shells other than the portable watch, there are those disclosed in Utility Model Reference 3 shown below.

Registered Utility Model No. 30099946

  FIG. 12 is a plan view of the decorative body shown in the above-mentioned utility model document 3. Sand 16 is fixed on a wooden substrate 15 with an adhesive as a background, and a butterfly wing is imitated on it. The four scallop larvae 17 arranged, the first pebbles 18 representing the body of the butterfly, and the second pebbles 19 simulating the tactile sensation are each fixed with an adhesive. In addition, third pebbles are arranged and fixed at the four corners for decoration.

  As shown in the above-mentioned utility model documents 1 and 2, a natural shellfish is sliced and used in a desired thickness in the timepiece display board. After that, press processing or cutting is performed to finish the desired shape. For this reason, the manufacturing cost becomes very high due to high processing costs and high material costs. Therefore, there is a problem that it can be used only for high-priced luxury watches.

  Further, when press working or the like is performed, there is a problem that the yield is deteriorated due to cracking, cracking, chipping or the like. In addition, since natural shellfish are used, the same pattern does not exist, and there is a problem that the appearance is different one by one.

  Moreover, in the decorative body shown in the above-mentioned utility model document 3, since the natural shell itself is used, the manufacturing cost is high. Of course, there is a problem that the size and pattern of each item change slightly, resulting in quality variations.

  This invention is made | formed in view of the said subject, The place made into the objective is to obtain the decorative component which obtains the same texture as a shellfish at low cost.

  As a means for solving the above-mentioned problems, the decorative part according to claim 1 of the present invention is characterized in that a metal oxide film is formed on the upper surface of the shell pattern of a plastic molded part having a shell pattern formed on the surface thereof, and the color tone of the shell. It is characterized by having appeared.

The decorative part according to claim 2 of the present invention, a metal oxide _{film, S i O 2, T i} O 2, Z r O 2, T a2 O 5 4~5 layer metal oxide film made of It is characterized by being laminated.

  The decorative part according to claim 3 of the present invention is characterized in that a protective film made of organic silica or silicon oxide is provided on the upper surface of the metal oxide film.

  The decorative part according to claim 4 of the present invention is characterized in that a plastic molded part is formed of a white resin or a transparent resin.

  Moreover, the decorative part according to claim 5 of the present invention is provided with a white coating film, or a metal plate or metal film having a white color tone on the surface opposite to the surface on which the shell pattern of the plastic molded part is formed. It is characterized by this.

  Moreover, the manufacturing method of the decorative part according to claim 6 of the present invention is a process of forming a plastic molded part having a shell pattern transferred thereon by an injection molding method using a mold incorporating a cavity with a shell attached thereto. And a step of forming a metal oxide film on the upper surface of the shell pattern of the plastic molded part by a vacuum deposition method or the like.

Further, the method of manufacturing the decorative part according to claim 7 of the present invention, a metal oxide _film, the _{S i O 2, T i O} 2, Z r O 2, T a2 O 5 made of a metal oxide film 4 It is characterized by being formed by stacking ˜5 layers.

  The method for manufacturing a decorative part according to claim 8 of the present invention is characterized by including a step of forming a protective film of organic silica or silicon oxide on the upper surface of the metal oxide film.

  The decorative part manufacturing method according to claim 9 of the present invention is characterized in that the plastic molded part is formed of a white resin or a transparent resin.

  Moreover, the manufacturing method of the decorative part of Claim 10 of this invention has the process of forming a white coating film by the coating or printing method on the surface on the opposite side to the surface in which the pattern of the shell of the plastic molded part was formed. It is characterized by this.

  Moreover, the manufacturing method of the decorative component according to claim 11 of the present invention is a step of attaching a metal plate or metal film having a white color tone to the surface opposite to the surface on which the shell pattern of the plastic molded component is formed. It is characterized by having.

  An electronic apparatus according to a twelfth aspect of the present invention is characterized in that the decoration part according to any one of the first to fifth aspects is incorporated to decorate a shell.

  An electronic device according to a thirteenth aspect of the present invention is a portable timepiece in which a decorative part according to any one of the first to fifth aspects is incorporated to decorate a shell.

  According to a fourteenth aspect of the present invention, there is provided an electronic device in which a decorative part is manufactured using the manufacturing method according to any one of the sixth to eleventh aspects, and the manufactured decorative part is incorporated to decorate the shell. It is characterized by having been subjected to.

In the present invention, a shell is attached to a cavity of a molding die, and a plastic molded part is formed by injection molding. Then, the shell pattern is transferred onto the plastic molded part. Then, on the pattern of shellfish plastic molded _parts, by stacking 4-5 layers of _{S i O 2, T i O} 2, Z r O 2, T a2 O 5 made of a metal oxide film, a glossy The shell color appears with a sense of brightness. Colors of shells of the same quality as real shells appear. Further, by providing a protective film made of organic silica or silicon oxide on the upper surface of the metal oxide film, the initial quality can be maintained over a long period of time.

  Moreover, by forming the plastic molded part with a white resin, the shell pattern and color tone become clear due to reflection and scattering of light. In the case of molding with a transparent resin, by providing a white coating film or the like on the back side, the shell pattern and color tone appear clearly due to light reflection and scattering. Further, even when a plastic molded part is formed with a white resin, the effect becomes greater when a white coating film is provided on the back side. This is not limited to the white resin, and the same effect can be obtained with a metal plate or metal film having a white color tone.

In addition, the manufacturing method of the present invention includes a step of molding a plastic molded part by an injection molding method using a mold incorporating a cavity with a shell attached, and a shell pattern of the plastic part transferred by molding. has the _{S i O 2, T i O} 2, Z r O 2, T a2 O 5 made of a step of forming a metal oxide film are stacked 4-5 layers. As a result, a shell pattern is formed on the plastic part, and a color tone similar to that of the shell is obtained. Since it can be manufactured by a molding process and a vapor deposition process, it is mass-productive and many of the same pattern can be obtained, resulting in a very low part cost. In addition, by providing a step of forming a protective film made of organic silica or silicon oxide on the upper surface of the metal oxide film, a protective film is provided on the metal oxide film, so that initial quality can be maintained over a long period of time. it can.

In addition, by forming the plastic molded part from white resin, the color tone of the shells becomes clear due to reflection and scattering of light. In the case of molding with a transparent resin, by providing a process of providing a white coating film on the back side, the color tone of the shellfish appears clearly due to light reflection / scattering. Further, even when a plastic molded part is formed with a white resin, the effect becomes greater when a white coating film is provided on the back side. This is not limited to the white resin, and the same effect can be obtained even if a step of attaching a metal plate or metal film having a white color tone is provided.

  By using such a decorative part as an external part of an electronic device, a pattern and color tone that is the same as that of a shell appears, so that the decorativeness is enhanced and a high-class feeling appears. In addition, various appearance design variations can be obtained. Further, when this decorative part is used as a display panel for a watch, a watch that can be manufactured at a low cost and that gives a sense of luxury is obtained.

  Hereinafter, the best embodiment of the present invention will be described with reference to FIGS. Before explaining the drawings, FIGS. 1 to 6 show a decorative part as a watch display board, FIG. 7 shows a decorative part as an earring, and FIG. 8 shows a portable watch equipped with a decorative part as a watch display board. FIG. 9 shows a cellular phone provided with a decorative part. Here, FIGS. 1 to 9 are as follows. FIG. 1 is a cross-sectional view of a main part of a timepiece display panel according to a first embodiment of the present invention, and FIG. 2 is a perspective view of the plastic display substrate in FIG. 3 is an explanatory view for explaining a method of forming the plastic display substrate in FIG. 1. FIG. 3A is a perspective view of a plastic display substrate blank after injection molding, and FIG. 3B is a press-up plastic. The perspective view of the display board is shown. FIG. 4 shows a perspective view and a cross-sectional view of the main part of the timepiece display plate according to the second embodiment of the present invention, where (a) is a perspective view and (b) is a cross-sectional view of the main part. is there. 5A and 5B are a perspective view and a cross-sectional view of a main part of a display panel according to a third embodiment of the present invention, where FIG. 5A is a perspective view and FIG. 5B is a cross-sectional view of the main part. FIG. 6 shows a perspective view and a main part sectional view of a display panel according to a fourth embodiment of the present invention. FIG. 6 (a) is a perspective view and FIG. 6 (b) shows a main part sectional view. Yes. Next, FIG. 7 shows a perspective view of an earring according to a fifth embodiment of the present invention. FIG. 8 is a plan view of a portable timepiece provided with a timepiece display plate according to the sixth embodiment of the present invention. FIG. 9 is a perspective view of a mobile phone provided with a decorative part according to the seventh embodiment of the present invention.

  1 and 2, the timepiece display board 20 according to the first embodiment of the present invention is a plastic display in which a shell pattern 22a is formed on the entire surface and a pointer mounting hole 22b is formed in the center. The substrate 22 and a metal oxide film 23 formed on the upper surface of the shell pattern 22a of the plastic display substrate 22 are configured. Although not shown, a protective film is provided on the upper surface of the metal oxide film 23, and an indicator such as a time letter is provided to complete the timepiece display panel.

  As shown in FIG. 3, the plastic display substrate 22 is formed by pressing an outer diameter and a hole 22b of a plastic display substrate blank 21 on which a shell pattern 22a is formed. (A) As shown in the figure, the plastic display substrate blank 21 is formed by injection molding, but there are protrusions 21b at two locations on both sides, and pins protrude on the back side. This pin plays a role of positioning during press working. The gate part for injecting the material is in the center part corresponding to the back side of the blank 21 in the figure. The blank 21 is made slightly larger than the size of the shell pattern 22a, and the outer peripheral area 21a is in a flat state without any pattern. Then, a portion with the shell pattern 22a is pressed to produce a plastic display substrate 22 shown in FIG.

  Here, the method of forming the shell pattern 22a on the plastic display substrate blank 21 is that the shell pattern is transferred to the display substrate blank 21 by pasting the shell onto the fixed cavity portion of the molding die. 22a is formed. As for the shellfish, white butterfly shells are used in this embodiment, but this white butterfly shell is sliced to a thickness of about 0.2 mm, formed into a predetermined shape by pressing or the like, and pasted and fixed to the cavity with an adhesive. Make a mold.

  In this embodiment, the plastic display substrate 22 is formed by injection molding with a polycarbonate resin mixed with a white pigment. The resin is not limited to the polycarbonate resin, and an epoxy resin, an acrylic resin, or the like can be selected. The mold temperature during injection molding is about 120 degrees. Therefore, a resin having a softening point temperature higher than that of the resin to be used is used. In addition, when white resin is used, reflection and scattering of light occurs, and the pattern and color tone of the shells appear clear.

Metal oxide film 23 is subjected on the shellfish pattern 22a of the plastic display substrate _{22, S i O 2, T i} O 2, Z r O 2, T a2 O 4~5 layer four types of metal oxide film of ₅ It is formed by stacking. The thickness of one layer is formed in the range of several tens of tens to several hundreds of centimeters, and the total thickness is about 1700 centimeters. Although not shown, a protective film is provided on the surface of the metal oxide film 23 to improve the contact resistance. As the protective film, organic silica, silicon oxide (S _i O ₁ , or S _i O ₂ ) or the like can be suitably selected.

  Next, a method for manufacturing the timepiece display board 20 described above will be described. First, as described above, the plastic display substrate blank 21 is formed by an injection molding method using a mold in which a cavity to which a shell is attached is assembled. At this time, the shell pattern 22a is transferred from the mold to the plastic display substrate blank 21. Next, the above-described metal oxide film 23 is formed on the upper surface of the shell pattern 22a formed on the plastic display substrate 22 by using a vacuum deposition apparatus or the like. Next, after cutting the gate, it is pressed by a press machine to form a plastic display substrate 22 having a required shape. Next, the protective film described above is formed by a coating method or the like.

  By adopting the configuration and the manufacturing method described above, it is possible to obtain a shell pattern and color tone having the same texture as when the shell described in the background art is attached to the display board. Since the manufacturing method is simple and mass production is possible, the manufacturing cost is very low. Further, the timepiece display board 20 formed in this way has a transmittance of 40 to 50%. Therefore, it can be sufficiently used for a display panel for solar cells.

  Next, a timepiece display panel according to a second embodiment of the present invention will be described with reference to FIG. 4 shows a display board in which two types of patterns, a shell pattern and a pattern other than the shell pattern, are formed on the display board. FIG. 4 (a) is a perspective view of the display board, and FIG. 4 (b). Shows a cross-sectional view of the main part.

  The timepiece display plate 30 is formed with a metal oxide film 33a on a shell pattern 32a on a plastic display substrate 32 having a shell pattern 32a formed on the outer peripheral side of the upper surface and a pattern 32b other than the shell formed on the inner peripheral side. A metal film 33b is formed on the pattern 32b other than the shell. Although not shown, a protective film having the same specifications as described in the first embodiment is formed on the upper surfaces of the metal oxide film 33a and the metal film 33b as in the first embodiment. Yes.

The display board 30 has two types of patterns and two types of colors on the upper surface side. One type is a shell pattern 32a and the color tone of the shell, and the other type is a pattern 32b other than the shell and the color tone thereof. Tone clam pattern 32a, as in the first embodiment described _{above, S i O 2, T i} O 2, Z r O 2, T a2 O 4~5 layer four types of metal oxide film of ₅ stacked And the color of the shellfish appears. In this embodiment, the color tone of the pattern 32b other than the other shellfish is formed by depositing Ni metal to form a Ni deposited film, and then performing a thin Au plating on the Ni deposited film. Au metal films are stacked to produce a light golden color tone. And the color tone of the display board 30 is put together by the light golden color and the color tone with the glitter of the shellfish. In any case, the color tone is produced by the metal oxide film 33a and the metal film 33b applied to the upper surface. Two types of patterns are formed by transferring from a mold during injection molding. The shell pattern 32a is formed by pasting a shell into a cavity of a mold, and the other pattern 32b other than the shell is formed by engraving a pattern in the cavity itself. As described above, when the cavity in which two types of patterns are formed is assembled in a mold and injection molding is performed, the plastic display substrate 32 on which the two types of patterns shown in the figure are formed is obtained. The resin used for the plastic display substrate 32 is a resin mixed with a white pigment, as in the first embodiment.

  The color tone of the shell pattern 32a is made by applying a metal oxide film having the same specifications as that of the first embodiment described above, but for the other patterns 32b other than the shell, it is appropriately set according to the required specifications. It is preferable. In the present embodiment, the pattern 32b other than the shell is formed by engraving the pattern into the cavity of the mold, but can also be formed by pressing (molding). Also, a printing method may be used as long as the patterning is flat.

  As described above, when the clock display board is constituted by two kinds of patterns, the shell pattern gives a sense of radiance and brings out a high-class feeling. In addition, if the design required by the pattern and color tone other than the other shell is constructed, the overall decoration becomes rich and a noble watch can be obtained. In addition, a wide variety of design variations can be obtained.

  Next, the display board shown in FIG. 5 shows the timepiece display board according to the third embodiment of the present invention. 5A is a perspective view, and FIG. 5B is a cross-sectional view of the main part. The timepiece display board 40 forms a display board by attaching a metal ring 44 having a pattern 44a other than the shell to a plastic display board 42 having a shell pattern 42a formed on the inner peripheral side. A metal ring 44 is affixed to a step portion 42 c provided in the outer peripheral region of the plastic display substrate 42.

  Here, a metal oxide film 43 is formed on the shell pattern 42 a of the plastic display substrate 42. This metal oxide film 43 has the same specifications as the metal oxide film described in the first embodiment. Although not shown, a protective film having the same specifications as the protective film described in the first embodiment is provided on the metal oxide film 43.

  The metal ring 44 is made of a metal plate, and a pattern 44a other than the shell pattern is formed on the upper surface. This pattern 44a can be easily formed by a stamping press operation. In addition, surface treatment such as plating is performed, and a pattern and a color tone are appropriately selected according to a required specification. In particular, when precious metal plating is applied, a precious metal feeling appears.

  The timepiece display panel having the above-described structure also has a precious metal feeling on the display board itself, and a glittering feeling that is the same color tone as that of the shellfish. In addition, when the display board is formed with two types of patterns, variations in design are abundant. In the present embodiment, the shell pattern is arranged on the inner side of the display board. However, the same effect can be obtained even when the shell pattern is arranged on the outer side and the metal plate is provided on the inner side.

  Next, the display board shown in FIG. 6 shows the timepiece display board according to the fourth embodiment of the present invention. 6A is a perspective view, and FIG. 6B is a cross-sectional view of the main part. In the watch display board 50, a plastic display substrate 52 is formed of a transparent resin. The upper surface is formed by transferring a shell pattern 52a from a mold. A metal oxide film 53 is provided on the upper surface of the shell pattern 52a. The metal oxide film 53 is formed with the same specifications as the metal oxide film described in the first embodiment. Although not shown, a protective film having the same specifications as the protective film described in the first embodiment is provided on the metal oxide film 53. Further, a white coating film 55 is provided on the lower surface of the plastic display substrate 52, that is, on the surface opposite to the surface on which the shell pattern 52a is formed.

  The white coating film 55 is formed by a coating method or a printing method using a transparent resin paint or ink containing a white pigment. By providing a white coating film on the lower surface, light is reflected and scattered, and the shell pattern 52a and color tone appear clearly. In addition, even if it replaces with a white coating film and a metal plate which has a white color tone is affixed, the same effect appears. As the metal plate, various materials such as aluminum plate and brass plate can be used, and it may be used by applying a metal plating showing a white color tone such as nickel plating or silver plating, or a white coating film on the metal plate. It may be provided and used. Moreover, aluminum foil etc. can be used besides a metal plate. In the present embodiment, the plastic display substrate 52 is formed of a transparent resin. When a white resin is used instead of the transparent resin and a white coating film is provided on the lower surface of the plastic display substrate, the shell pattern and color tone become more vivid.

  As described in detail above, the watch display plate counted as one of the decorative parts can be easily transferred to the plastic display board by attaching the shell to the cavity of the injection mold and injection molding. . Then, by applying a metal oxide film on the transferred shell pattern, the same color tone as that of the shell can be obtained. Since this is a relatively simple manufacturing method and mass production is possible, it can be manufactured at a very low cost. It is also possible to combine shell patterns with other patterns, and various design variations can be obtained.

  Next, as a fifth embodiment of the present invention, an earring which is one of decorative parts will be described with reference to FIG. FIG. 7 shows a perspective view of an earring as a decorative part according to the fifth embodiment of the present invention. The earring 60 is composed of two child parts 61 and 62 which are made symmetrical, and the back surfaces thereof are bonded and fixed via an adhesive. A shell pattern 61a is provided on the surface of the child component 61, a metal oxide film is formed on the surface of the pattern 61a, and a protective film is further provided. The metal oxide film and the protective film here are formed with exactly the same specifications as the metal oxide film and the protective film of the first embodiment. Although not visible in the figure, the child component 62 is also provided with the same shell pattern 62 a as the shell pattern 61 a of the child component 61.

  Projections 61b and 62b projecting upward in the figure of the child parts 61 and 62 are projections for attaching a chain, and a small hole 61c is opened, and the small hole 61c is attached through the chain. And the chain | strand is attached to the fixture which attaches to an ear | edge, and the earring 60 is attached to an ear | edge via a chain | strand.

  The child parts 61 and 62 are formed by injection molding using a white resin. The shell patterns 61a and 62a are then formed by transferring from the mold. If the child parts 61 and 62 are completely symmetrical parts, the earring 60 can be easily obtained by making a lot of parts and bonding them together.

  Since the earrings thus formed have the same pattern and color as real shells, they are not inferior to real shells. And since it can mass-produce, a manufacturing cost becomes cheap and it can provide at a cheap price.

  FIG. 8 shows a plan view of a portable timepiece provided with a timepiece display plate according to a sixth embodiment of the present invention. In this portable timepiece 70, a display plate 72 is attached in a case 71, and an hour hand 73, a minute hand 74, and a second hand 75 are disposed on the display plate 72. A crown 76 is attached to the case 71. The band is omitted in the figure.

  The display board 72 is made of white polycarbonate resin, and a white butterfly pattern 72a is provided on the inner periphery thereof, and a pattern 72b other than the shell is provided on the outer periphery thereof. The shell pattern 72a is formed by transferring from a mold, and a metal oxide film and a protective film are formed on the upper surface thereof. The metal oxide film and the protective film are formed with exactly the same specifications as the metal oxide film and the protective film of the first embodiment described above. The pattern 72b other than the shell is formed by a stamping press method, formed with a Ni vapor deposition film, Sn-plated, and the same protective film as that provided on the shell pattern 72a is provided. And, it is summarized in a white color tone as a whole, and rather, it has a soft white color tone and an appearance color that makes a precious metal feel.

  A portable watch using the display panel as described above has a pattern and color tone with the same texture as shellfish on the display panel, and the display panel has a soft white color tone to give it a precious metal feel. It gives you a very high-class feel. Even if the display board of the present invention is used for a relatively inexpensive watch, a high-class feeling appears.

  Next, what is shown in FIG. 9 is a perspective view of an electronic apparatus as a mobile phone according to the seventh embodiment of the present invention. The cellular phone 80 is a foldable type, and the figure mainly depicts the front side in a folded state. There is an upper cover 81, and a display cover 82 is attached to the upper cover 81 in an integrated manner from the center to the left side. A liquid crystal display device 83 and a switch 84 for displaying the liquid crystal display device 83 are attached to the display cover 82. The display cover 82 is made of plastic, has a shell pattern 82a, and has a shell color tone. Moreover, although the upper cover 81 is made of plastic, it is painted with a metallic tone such as silver, and the entire front side is decorated with a metallic feeling and a glittering feeling that the shell tone is released.

  The shell pattern 82a here is formed by transferring from a mold in the same manner as in the embodiments described so far. A metal oxide film and a protective film are provided on the shell pattern 82a.

  In many cases, the cover of a mobile phone is formed with a curved surface. Therefore, the shell to be attached to the mold cavity must also have the same curved surface as the cover. Since the shellfish has a property of being softened by heat, the same curved surface as the cover can be obtained by immersing it in hot water of about 80 degrees for about 5 to 10 minutes and then pressing it into a curved surface by a pressing method. In this way, when a shell having the same curved surface as that of the cover is attached to the cavity and injection molding is performed, a curved cover having a shell pattern is obtained.

  In the present embodiment, the shell pattern 82a is formed on the display cover 82, but there is no particular limitation, and the shell pattern may be formed on the upper cover 81, or both. Also, if the front side is finished in combination with other patterns, etc., the decorativeness will be rich and the design variations will be abundant.

  As described above, a portable watch and a cellular phone have been described as examples of the electronic device. However, the present invention can be applied in exactly the same manner to various other electronic devices or terminal devices. The technology of the present invention can also be applied to various decorative items, nameplates, stickers, seals, nameplates, figurines and the like.

  The present invention is an invention in which a simulated product of shellfish is made to appear in the same pattern and color tone as the shellfish. The technology of the present invention can be applied to all products that decorate shells. It can be used for decoration, decoration of display boards, decoration of electronic devices, decoration of building components, decoration of electrical products and the like.

It is principal part sectional drawing of the display panel for timepieces concerning 1st Embodiment of this invention. It is a perspective view of the plastic display substrate in FIG. 1A and 1B are explanatory views for explaining a method of forming a plastic display substrate in FIG. 1, wherein FIG. 1A is a perspective view of a plastic display substrate blank after injection molding, and FIG. FIG. 4 is a perspective view and a main part sectional view of a timepiece display plate according to a second embodiment of the present invention, in which FIG. (A) is a perspective view, and FIG. FIG. 7 is a perspective view and a principal part sectional view of a timepiece display panel according to a third embodiment of the present invention, wherein FIG. 5A is a perspective view and FIG. FIG. 7 is a perspective view and a principal part sectional view of a timepiece display plate according to a fourth embodiment of the present invention, wherein FIG. It is a perspective view of the earring which concerns on 5th Embodiment of this invention. It is a top view of the portable timepiece provided with the display panel for timepieces concerning a 6th embodiment of the present invention. It is a perspective view of the mobile telephone provided with the decorative component which concerns on 7th Embodiment of this invention. 2 is a cross-sectional view of a main part of a timepiece display plate disclosed in Utility Model Reference 1. FIG. FIG. 5 is a cross-sectional view of a main part of a timepiece display plate disclosed in Utility Model Reference 2; FIG. 10 is a plan view of a decorative body disclosed in Utility Model Reference 3.

Explanation of symbols

20, 30, 40, 50 Clock display board
21 Plastic display substrate blank 22, 32, 42, 52 Plastic display substrate 22a, 32a, 42a, 52a, 61a, 62a, 72a, 82a Shell pattern 23, 33a, 43, 53 Metal oxide film
32b, 44a, 72b Patterns other than shellfish 44 Metal ring
55 White coating film 60 Earrings 61, 62 Child parts 70 Mobile watch 71 Case 72 Display board 73 Hour hand 74 Minute hand 75 Second hand 76 Crown 80 Mobile phone 81 Upper cover 82 Display cover 83 Liquid crystal display device 84 Switch

Claims (14)

A decorative part characterized in that a metal oxide film is formed on the upper surface of the shell pattern of a plastic molded part having a shell pattern formed on its surface to cause the shell color to appear. Said metal oxide _film, the _{S i O 2, T i O} 2, Z r O 2, T a2 claim _{1 O 5} metal oxide film made of, characterized in that formed by stacking 4-5 layers Decorative parts as described. The decorative part according to claim 1 or 2, wherein a protective film made of organic silica or silicon oxide is provided on the upper surface of the metal oxide film. The decorative part according to claim 1, wherein the plastic molded part is formed of a white resin or a transparent resin. 5. The white plastic film, or a metal plate or metal film having a white color tone is provided on the surface of the plastic molded part opposite to the surface on which the shell pattern is formed. Decorative parts. A step of molding a plastic molded part having the shell pattern transferred thereon by an injection molding method using a mold incorporating a cavity pasted with a shell, and a vacuum deposition method on the upper surface of the shell pattern of the plastic molded part, etc. And a step of forming a metal oxide film. Said metal oxide _film, the _{S i O 2, T i O} 2, Z r O 2, T a2 claim _{6 O 5} metal oxide film made of, characterized in that formed by stacking 4-5 layers A method for manufacturing the decorative part described. 8. The method of manufacturing a decorative part according to claim 6, further comprising a step of forming a protective film made of organic silica or silicon oxide on the upper surface of the metal oxide film. The method of manufacturing a decorative part according to claim 6, wherein the plastic molded part is formed of a white resin or a transparent resin. The decorative part according to claim 6 or 9, further comprising a step of forming a white coating film on a surface opposite to the surface on which the shell pattern of the plastic molded part is formed by a painting or printing method. Production method. The decoration according to claim 6 or 9, further comprising a step of attaching a metal plate or a metal film having a white color tone to a surface of the plastic molded part opposite to a surface on which the shell pattern is formed. A manufacturing method for parts. An electronic device comprising a decoration part according to any one of claims 1 to 5 and decorated with a shell. An electronic device as a portable timepiece, wherein the decorative part according to any one of claims 1 to 5 is incorporated to decorate a shell. An electronic device, wherein a decorative part is manufactured using the manufacturing method according to any one of claims 6 to 11 and the manufactured decorative part is incorporated to decorate a shell.

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