JP2015036665A - Portable watch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide, at a low cost, a thin type portable watch capable of obtaining high-grade brightness and color tone even when thin precious stones are used for decorative members such as hour characters and alleviating a variation in color even when the number of colored decorative members is used, thereby enhancing a viewing quality of the decorative member.SOLUTION: The portable watch fixes a precious stone such as a diamond as an hour character index on an obverse surface of a display plate 100 for watch via a pedestal 106, and forms light reflecting means composed of a reflection layer 108 on a rear side and a side face side of a precious stone 106a. The reflection light of the precious stone 106a is effectively utilized to be brilliant by providing an air layer 107 between a rear face of the previous stone 106a and the reflection layer 108. When the number of colored precious stones is used, the formation of light reflecting means having the same color as that of the previous stone provides a portable watch that supplements and alleviates the variation in color of the colored precious stones.

Description

  The present invention relates to a portable timepiece in which a light-transmissive decorative member such as a jewel is mounted on a display board, a case outer surface, or the like. Hereinafter, light-transmitting decorative members such as jewels may be collectively referred to as precious stones.

  Conventionally, in portable watches such as wristwatches, a precious stone entrance pedestal in which a precious stone such as diamond is incorporated into the pedestal as a decorative member such as a time letter at the position indicating the time on the viewing side of the display board (generally referred to as “dial plate”) Some are equipped with parts. In some cases, a precious stone is directly fixed to the display plate without using a pedestal.

  Furthermore, in addition to the display plate, there is a watch case (side), a band or the like equipped with a diamond or other precious stone as a decorative member.

  A portable watch equipped with such a precious stone is regarded as a watch belonging to a relatively expensive rank because the precious stone itself is expensive and has the purpose of enhancing the decoration or creating a high-class feeling.

  FIG. 16 is a perspective view of a conventional watch display board 30 with a precious stone-containing pedestal component disclosed in the drawing showing the prior art of Patent Document 1, and FIG. 17 is a sectional view of the center of the watch display board of FIG. Is shown. The timepiece display board 30 includes a display board substrate 31 and a precious stone-introduced pedestal component 36 disposed on a part of the time letters on the upper surface of the display board board 31, and the time letters formed by printing or the like on the remaining time letters. 34 is provided.

  Here, a manufacturing method of the timepiece display plate 30 will be described. As shown in FIG. 17, the display board substrate 31 is fixed to the lower surface of the board made of a metal plate such as brass or white with two ete feet 35 for fixing to a movement block for a watch by a method such as welding. Has been. A central hole 32 for penetrating the pointer is provided in the central portion. The surface of the display board substrate 31 is subjected to surface treatment such as plating or painting, and a brand name, a logo mark, or the like is formed by a printing method or the like according to specifications.

  The precious stone containing pedestal component 36 is composed of a pedestal portion 36b and a precious stone 36a, and the pedestal portion 36b is formed by cutting a metal such as a brass material, and is subjected to a surface treatment such as wet plating so as to suit the size of the pedestal portion. The precious stone 36a is assembled from above, and is fixed by caulking in a form in which the precious stone is pressed by a pressing claw formed on the pedestal portion 36b with a dedicated jig.

  FIG. 19 and FIG. 20 show the shape of a brilliant cut (ideal cut) that is said to emit an ideal shine among diamonds as typical precious stones. In the Brillian cut, the external light incident from the upper part of the table called a crown is radiated from the crown again by repeating refraction and reflection almost 100% inside, so that an ideal brightness can be obtained.

In the case of an ideally shaped brilliant cut, the angle of the conical lower part called the pavilion (θ in FIG. 19) is 40.75 degrees with respect to the maximum diameter (R) called the girdle, and the depth of the pavilion is the R dimension. 42 to 44% of the total height including the crown is 59 to 62% of the R dimension. That is, even in the case of a precious stone with a relatively small diameter of 1 mm, the total height is about 0.6 mm, and in the case of a precious stone with a diameter of 1.5 mm, the total height is about 0.9 mm. For example, when fixed as a time character on a display board substrate via a pedestal, it is necessary to form the long / short hand and the second hand at a position that rotates without contacting the top of the precious stone, and the entire watch becomes too thick. There is a problem.

  As another problem in a portable timepiece using a precious stone for a decorative member such as a time character indicator, there is a problem relating to the case where a colored precious stone called a colored stone is used. When multiple colored stones are placed on the display panel, case, band, etc. of the same portable watch, natural precious stones cannot avoid color variations, and precious stones must be sorted or stratified, and expensive precious stones are used. There was also a problem that the portable watch with precious stones became even more expensive.

  Patent Document 1 is disclosed as an invention relating to solving both the problem of increasing the thickness of a decorative member such as a precious stone when a precious stone is used as a time character in a timepiece display board, and the problem relating to the color unevenness of a colored precious stone. . As shown in FIG. 18, this method cuts and forms a precious stone-shaped cut pattern 13 c by NC machining on the upper part of a metal indicator board 13 b integrally processed with the attachment portion 13 f of the precious stone-like time character 13, The cut pattern 13c is subjected to a precious metal-like surface treatment by a plating method or the like, and further, a color film is applied to a part or the entire surface of the indicator substrate 13b by printing or painting, and then the light-transmitting decorative member 13a is formed in a round shape. Thereafter, the attachment portion 13f is inserted into the attachment hole formed at the time character position of the display board substrate 31, and fixed by caulking or bonding.

  Both the indicator substrate 13b and the cut pattern 13c can be formed by machining so that the thickness dimension is sufficiently suppressed, and the indicator substrate 13b, which is a decorative member, is raised by the lens effect of the round light-transmitting decorative member 13a. It aims at the effect of being visible. It is the content that the total thickness dimension of the decorative member is suppressed, the color tone of the precious stone cut portion can be made uniform by coloring, and the desired precious stone-like time character is provided at low cost.

JP 2006-208207 A (page 2, FIG. 1 and FIG. 2, page 6, FIG. 3B)

  However, in the method of Patent Document 1, the shape of the precious stone and the thinning of the precious stone-style hourly character index have been achieved, but with the precious stone-like cut and plating of metal, the brightness of the real light-transmitting precious stone, There were problems in terms of quality, such as lack of luxury and decorativeness, and further improvements were required.

  After all, when precious stones are used for decorative parts of portable watches such as time letters, as shown in FIG. 21 (a), can the cone angle of the pavilion be made very large to make the whole precious stone shallow and suppress the dimension in the thickness direction? Alternatively, as shown in FIG. 21 (b), the conical portion of the pavilion must be cut into a substantially trapezoidal shape in the middle to suppress the thickness of the precious stones. It does not reflect well inside the precious stones, and more light leaks from the back side of the precious stones, so it does not have a good brilliance like brilliant cut, and uses multiple colored precious stones when using natural precious stones The problem of color variation when doing so has not been solved.

  In addition, the problem of lack of brightness of precious stones with reduced thickness dimensions and the problem of color variations when using multiple colored precious stones are not limited to decorative members such as time letters formed on the display board. Even when a decorative member such as a precious stone is mounted on the outer surface, it exists in exactly the same way.

The present invention has been made in view of the above circumstances, and in a watch display board or watch case of a portable watch incorporating a precious stone having light permeability as a decorative member such as a time character, the thickness dimension is suppressed. An object of the present invention is to provide a portable timepiece that is sufficiently bright and decorative even if precious stones are used, and that does not increase the overall thickness of the timepiece.

  Further, in a portable timepiece using a plurality of colored precious stones for a display board, a case, etc., it is possible to provide a portable timepiece having a high-quality decoration member at low cost by reducing and reducing the occurrence of color variations. For the purpose.

  It is another object of the present invention to provide a portable timepiece having a small variation in the color of the decorative member between portable timepieces equipped with a decorative member such as a colored precious stone.

  The portable timepiece according to the present invention is a portable timepiece in which at least one decorative member having optical transparency is mounted on the viewing side, and is provided in at least one region on the back side or the side surface viewed from the viewing side of the decoration member. A light reflecting means is provided.

  The decorative member is colored, and the light reflecting means is colored in the same or similar color as the decorative member.

  Further, there are a plurality of the decorative members, and the color of the light reflecting means provided for each decorative member is darker than the color of the decorative members.

  Moreover, an air layer is formed between the decorative member and the light reflecting means.

  In addition, the portable timepiece is formed with a decoration member arrangement hole in which at least a part of the back side or side surface portion of the decoration member is arranged, and the air layer is formed in the decoration member arrangement hole. It is formed.

  In addition, a space member is provided between the surface of the decorative member exposed in the decorative member arranging hole and the inner surface of the decorative member arranging hole so as to separate the surface and the inner surface from each other. Or at least one of the surface of the decorative member exposed in the decorative member disposing hole and the inner surface of the decorative member disposing hole, and the protrusion that separates the surface and the inner surface from each other By forming the air layer, the air layer is formed.

  In addition, the cross-sectional shape of the decorative member arranging hole formed in the portable timepiece is the same as the back side shape of the decorative member, and the decorative member arranging hole and the back side of the decorative member are between In addition, a gap in which the separation distance is uniform is provided.

  Further, the decorative member disposing hole formed in the portable timepiece is a through hole, and the decorative member is disposed on the opposite side of the decorative member from the viewing side, and the shielding means having the reflecting means is disposed. The air layer is formed between a member and the shielding means.

  The decorative member may be any one of colored or colorless precious stones, glass, transparent or translucent ceramics, a translucent resin, and a translucent microsphere.

  According to the portable timepiece according to the present invention, in the portable timepiece that uses a precious stone such as diamond as a light-transmitting decorative member that is attached to a time character, a case, or the like, the light reflecting means is provided on the back or side region of the decorative member. By providing, the brightness of decorative members such as precious stones increases, and the effect of enhancing the luxury feeling of the portable watch can be obtained.

  Further, according to the portable timepiece according to the present invention, when a precious stone such as diamond is used as a decorative member on a display board or case of a portable timepiece, even if a thin precious stone that is not a full-fledged precious stone is attached, A sufficient brightness of the decorative member can be obtained by the reflecting action of the reflecting means, so that it is possible to provide a portable timepiece having a small thickness dimension.

  Further, according to the portable timepiece according to the present invention, when attaching the precious stone as a decorative member to the display board or case of the portable timepiece, the fixing hole of the precious stone is a through hole that can be easily processed and the vertical dimension can be suppressed, By covering the hole from the back side after the precious stone is mounted, it becomes possible to provide a portable timepiece with no unevenness in reflected light and with a small thickness.

  Further, according to the portable timepiece according to the present invention, in the portable timepiece used for the decorative member for attaching the colored precious stone to the time character or the case, the color of the decorative member is similar to the region on the back side or the side surface side of the decorative member. By providing the color light reflecting means, the color reflection of the decorative member is complemented by the reflecting action of the light reflecting means, and the effect of reducing and reducing the width of the color variation is obtained, so that the color variation is large. Even if inexpensive natural precious stones are used, it is possible to provide a portable watch having a good appearance with the same color tone of the decorative member.

  Further, according to the portable timepiece according to the present invention, the color tone of the decorative member is formed by forming the light reflecting means having a color darker than the color of the decorative member in the area on the back side or side surface of the colored decorative member such as a precious stone. In a portable watch equipped with a colored decorative member, the effect of reducing and reducing the range of variation in color among a plurality of colored decorative members is more efficiently realized. The color between one or more colored decorative members attached to one mobile watch and the color of the decorative members between multiple mobile watches are excellent in appearance and appearance quality with reduced color variation. It becomes possible to provide a complete portable watch.

1 is an external view showing a portable timepiece as an embodiment of a timepiece according to the present invention. The perspective view of Embodiment 1 of the timepiece display board used for the portable timepiece concerning the present invention is shown. The center sectional view in FIG. 2 of the display board for timepieces used for the portable timepiece which concerns on this invention is shown. The perspective view of Embodiment 1 of the base part which is a main part of the precious stone entering base part used for the portable timepiece concerning the present invention is shown. The center sectional view of the precious stone entering base part in Embodiment 1 of the portable timepiece concerning the present invention is shown. (A) shows the center sectional view of the precious stone entrance base part in modification 1 of Embodiment 1 of the portable timepiece concerning the present invention. (B) shows the center sectional view of the precious stone entrance base part in another example of modification 1 of Embodiment 1 of a portable timepiece concerning the present invention. The center sectional view of the precious stone mounting part to the display board for timepieces in modification 2 of Embodiment 1 of the portable timepiece concerning the present invention is shown. The center sectional drawing of the precious stone entrance base component in Embodiment 2 of the decoration member fixed to the display board for timepieces used for the portable timepiece which concerns on this invention is shown. (A) shows one Example of the shielding member formation place in the display panel back surface for timepieces in Embodiment 2 of the portable timepiece which concerns on this invention. (B) shows another Example of the shielding member formation place to the display panel back surface for timepieces in Embodiment 2 of the portable timepiece concerning the present invention. The center sectional drawing of the precious stone entrance base component in the modification of Embodiment 2 of the timepiece display board used for the portable timepiece concerning the present invention is shown. The center sectional drawing of the precious stone entering base part in Embodiment 3 of the display panel for timepieces used for the portable timepiece concerning the present invention is shown. The center sectional view of the precious stone entry base part in Embodiment 4 of the timepiece display board used for the portable timepiece concerning the present invention is shown. The center sectional drawing of the precious stone entering base part in the modification of Embodiment 4 of the timepiece display board used for the portable timepiece concerning the present invention is shown. The center sectional drawing of the precious stone entrance base component in Embodiment 5 of the display panel for timepieces used for the portable timepiece concerning the present invention is shown. The center sectional drawing of the precious stone entrance base component in the modification of Embodiment 5 of the timepiece display board used for the portable timepiece concerning the present invention is shown. The perspective view of the display plate for timepieces equipped with the precious stone of the prior art is shown. FIG. 17 is a central cross-sectional view of a timepiece display board equipped with the prior art precious stone shown in FIG. 16. The decorative member for timepiece display boards of the conventional pedestal is shown. Shows the shape and part names of diamonds by brilliant cut. FIG. 20 shows a light path inside the diamond by the brilliant cut shown in FIG. (A) shows the light path in the thin precious stone. (B) shows the internal light path in another shape of the thin precious stone.

  Hereinafter, specific embodiments of a portable timepiece according to the present invention will be described with reference to the drawings.

  The same parts will be described using the same reference numerals.

  FIG. 1 is an external view showing a portable timepiece 500 as an embodiment of a timepiece according to the present invention.

  The illustrated portable watch 500 includes a watch body 510 and a watch band 530 that allows the watch body 510 to be attached to and detached from a user's arm. The watch body 510 has a metal case 520 and an hour hand and a minute hand inside the metal case 520. And a movement 550, which is a mechanism for driving a pointer 540 such as a second hand, and the timepiece display plate 100.

FIG. 2 is a perspective view of the timepiece display board 100 used in the portable timepiece 500 according to the first embodiment of the present invention, and FIG. 3 is a cross-sectional view of the center of the timepiece display board 100 of FIG. The timepiece display panel 100 includes a display panel substrate 101 and a surface on the viewing side of the display panel substrate 101 (the upper surface in FIG. 3, hereinafter referred to as the front surface. The surface opposite to the front surface is the back surface. Or place the precious stone entry base part 106 as a time character index in a part corresponding to some time characters (4 o'clock at 12 o'clock, 3 o'clock, 6 o'clock and 9 o'clock) of part of the time character (printed on the remaining time characters) The printing time character 103 formed in (1) is formed.

  In the present embodiment, the display plate substrate 101 is a brass plate having a thickness of 0.5 mm, and is given a so-called Asahi light weight on the front surface and then plated with rhodium. A central hole 102 for attaching a pointer such as a long hand, a short hand, or a second hand is provided at the center. Further, two ete feet 105 for fixing to a movement block for a watch are fixed to the back surface opposite to the front surface by welding.

  After plating the surface of the display board substrate 101, a printing time character 103, and a brand name, a logo mark, etc. are formed by printing or other methods according to specifications.

  The precious stone entering pedestal component 106 is composed of a precious stone 106a and a pedestal portion 106b, and the pedestal portion 106b is formed by cutting a brass material. Further, as shown in a perspective view of FIG. 4, four pressing claws 106d are formed in the base portion 106b by processing and forming four slits 106c, and an inner peripheral concave portion for fixing the precious stone 106a. 106 g is formed. On the lower surface, a foot portion 106 e for fitting the precious stone-containing base part 106 to the display plate substrate 101 is formed on the display plate substrate 101.

  The base part 106b is subjected to electroless nickel plating on the entire surface after processing mainly for the purpose of rust prevention, and the precious stone 106a is assembled into the inner peripheral concave part 106g from above, and the precious stone 106a is fixed by caulking with four holding claws 106d with a dedicated jig. After that, the foot portion 106e is fixed to the mounting hole of the display board substrate 101 by any one of press-fitting, caulking and adhesion fixing methods, or a combination of a plurality of fixing methods.

  In the present embodiment, an example is shown in which the precious stone-containing base parts 106 are mounted at four locations at 12 o'clock, 3 o'clock, 6 o'clock, and 9 o'clock on the display board substrate 101, but it corresponds to all time characters from a minimum of one location. There are no particular restrictions on the number and location of the precious stone-introduced base component 106 to be mounted on the display board substrate 101, such as mounting at 12 locations or locations other than time characters.

  In the present embodiment, four pressing claws 106d are caulked and fixed as means for fixing the precious stone 106a to the pedestal portion 106b, and no adhesive is used. The reason why the adhesive is not used will be described later.

FIG. 5 is a cross-sectional view showing a state in which the precious stone-containing base part 106 used in the timepiece display plate 100 used in the portable timepiece according to the first embodiment of the present invention is fixed to the timepiece display plate 100. The inner peripheral concave portion 106g of the pedestal portion 106b used in the present embodiment is formed as a conical pavilion shape on the back surface of the precious stone 106a and a mechla hole having substantially the same cross section as shown in FIG. The formation of this mechla hole can be easily formed by cutting with a cutter such as a cone having a conical tip and a cross-sectional shape substantially the same as the pavilion shape. The inner peripheral concave portion 106g of the pedestal portion 106b having the same cross-sectional shape as the pavilion portion is provided with a reflective layer 108 as a reflection means on the back side and the side surface side of the precious stone 106a, a bottom surface portion having a conical cross section, and the entire inner peripheral surface. To form.
As shown in FIG. 5, the reflective layer 108 may be formed on the back side or the side surface of the precious stone 106a, preferably on both sides.

  Here, the side surface refers to a reflective surface perpendicular to the display plate substrate 101 in FIG. 5, and the back surface refers to a reflective surface other than the side surface. The same applies to the following embodiments.

When providing light reflecting means on the back side and side surface side of decorative members such as natural precious stones, the configuration of the reflecting part may be substantially the same shape as the shape of the back and side surfaces of the precious stone, not through holes, i.e. preferable. By forming a mechla hole, the gap between the inner peripheral concave portion 106g and the back and side surfaces of the precious stone becomes uniform, the reflected light is returned to the precious stone without unevenness, and a part of the light is directed to the front surface side. As a result, it is possible to obtain an effect that the precious stone appears to shine. In the case of a through hole instead of a mechla hole, light is transmitted, or light is reflected differently from other parts, and unevenness and shadows are generated in the reflected light, which is not preferable.

  In the present embodiment, the precious stone 106a is formed using the colorless and transparent diamond described in FIG. 21A, in which the conical angle on the back surface is increased and the pavilion portion is shallowed to suppress the vertical dimension in FIG. Yes. The girdle outer diameter is 1.2 mm, the vertical thickness is 0.45 mm, 38% of the outer diameter, and the overall height of the brilliant-cut diamond, which is the ideal radiant shape described in FIGS. 19 and 20. However, compared with 59 to 62% of the outer diameter, it is very thin.

  In this embodiment, ME2025PS (powder average particle size of 24 μm), which is a silver-based bright pigment made by Matsuo Sangyo Co., Ltd., is used as an acrylic binder as the reflective layer 108 formed on the entire inner peripheral concave portion 106g of the pedestal portion 106b. Acrylic ink mixed with about wt% was applied and formed in a thickness of 40 μm to 60 μm using a face brush or the like.

  When a precious stone such as a colorless and transparent diamond is used for the precious stone 106a as in the present embodiment, the reflective layer 108, which is a light reflecting means, is colorless, silver, or a gold system with a modest color tone of gold and has a shine. By forming with a reflective material, even if the pavilion is shallow and the precious stone has a thin vertical dimension, the light leaked through the back of the precious stone is reflected by the reflective layer 108 and returned to the inside of the precious stone to be visually recognized again. Therefore, it was confirmed that the same brightness as that of the brilliant cut was obtained.

  Moreover, even when the reflective layer 108 as a light reflecting means is formed with a thickness of 40 μm to 60 μm using an ink of a silver-based dye added with 10 to 20% by weight of glass spheres of 10 μm to 30 μm instead of the bright pigment ink, A similar light reflection effect was obtained by the diffuse reflection of the glass sphere.

  In this embodiment, good results were obtained using ink containing 15% by weight of Unibeas (registered trademark), which is a fine glass sphere manufactured by Unitika, as the light-transmitting fine sphere.

  Further, it was confirmed that the reflective layer 108 becomes an excellent reflective layer including diffuse reflection by adding a transparent fine sphere such as a glass sphere to the bright pigment ink.

  Furthermore, even when a paint having a glitter property is applied instead of the glitter pigment ink, or when a wet or dry plating layer having a high glitter property as shown in a modified example of Embodiment 2 described later is formed, a substantially similar light reflection effect is obtained. Obtained.

  In the present embodiment, an example in which colorless and transparent diamond is mounted on a precious stone 106a, which is a decorative member such as a time letter, via a precious stone-containing base part 106 on the display board substrate 101 has been introduced. The precious stone 106a is made of a light-transmitting material, for example, colorless or colored, in that the light reflecting means is formed on the back surface and the side surface as viewed from the side to obtain the effect of shining the light transmitting decorative member. In addition to diamonds, colorless or colored precious stones such as ruby, sapphire, emerald, quartz, purple quartz, translucent ceramics, translucent resin, glass, etc. are the same as the precious stone 106a shown in FIG. If it is a decorative member having a shape pavilion, the same effect can be obtained in increasing the brightness.

Furthermore, in the present embodiment, two separation members 109 are provided between the conical pavilion part on the back surface of the precious stone 106a and the inner peripheral concave part 106g of the pedestal part 106b having substantially the same cross section as shown in FIG. It arranges in. In the present embodiment, two stainless steel wires having a wire diameter of 0.1 mm formed into an O (O) ring or a C (sea) ring shape as close as possible to the O (O) ring are used as the separating member 109.

The role of the separating member 109 is to expose the pavilion portion on the back surface of the precious stone 106a exposed in the inner peripheral concave portion 106g of the pedestal portion 106b and the inner surface of the inner peripheral concave portion 106g of the pedestal portion 106b having substantially the same shape as the pavilion portion. It is an air layer forming means for forming an air layer 107 between them by separating them. In this embodiment, a stainless steel wire having a diameter of 0.1 mm is used. However, the present invention is not limited to this, and in the case where the reflective layer 108 is formed with a bright pigment or dye-added ink, a glass with a diameter of 0.1 mm is used. About 10% by weight of a sphere or a ball made of a light-transmitting resin may be added, or after the formation of a glittering or colored ink layer, an amount corresponding to 10% by weight may be applied before drying. Even if it is a metal sphere such as a stainless sphere or a non-translucent resin sphere, if it is added by about 10% by weight, the light reflection effect is not greatly affected, and therefore it can be used.
In a state where the ink applied in advance to the inner peripheral concave portion 106g of the pedestal portion 106b is in a semi-dry soft state, it is dispersedly arranged so as to cover a predetermined amount of a 0.1 mm diameter glass sphere, a light transmitting resin sphere, a metal sphere, By caulking while holding the precious stone 106a downward, the separating member 109 comes into close contact with the bottom surface of the inner peripheral concave portion 106g, and the rear pavilion portion of the precious stone 106a and the inner peripheral concave portion of the pedestal portion 106b having substantially the same shape as this. The gap with 106 g is formed so as to be uniformly maintained at approximately 0.1 mm. By forming the reflective layer 108 made of ink to a thickness of 40 μm to 60 μm, the space due to the difference between the dimension of the separating member 109 and the thickness of the reflective layer 108 becomes the thickness dimension of the air layer 107. In the present embodiment, the air layer 107 is formed by the back surface pavilion portion of the precious stone 106a, the inner peripheral concave portion 106g, and the separation member 109.

  In the present embodiment, the embodiment using the 0.1 mm diameter stainless steel wire, the 0.1 mm diameter glass ball, the light transmitting resin ball and the metal ball, and the resin ball as the separation member 109 has been described. The diameter of the ball is limited to about 40 to 60 μm in thickness management when the reflective layer 108 is formed of ink, and the air layer 107 must be reliably formed by the difference in thickness with the reflective layer 108. The dimension of 109 is preferably in the range of 0.08 mm to 0.2 mm.

  Further, in the present embodiment, the reflective layer 108 serving as a light reflecting means is formed by using an ink of a silver dye added with 10 to 20% by weight of fine glass spheres of 10 to 30 μm instead of the bright pigment ink described above. In this case, apart from the fine glass sphere, by adding 10% by weight of a glass sphere having a diameter in the range of 0.08 mm to 0.2 mm as the separating member 109, It has also been confirmed that the entire glass sphere used as the separating member 109 serves as a reflection means for light diffusion. That is, a result was obtained in which translucent microspheres such as glass spheres served as a part of the separating member 109 and the reflective layer 108. In this case, instead of adding and mixing glass spheres of the respective dimensions to the ink from the beginning, after forming a reflective layer having a thickness of 40 μm to 60 μm with the ink, the glass spheres having a diameter of 0.1 mm are obtained in a semi-dry soft state. Is dispersed as if it is applied to the ink layer, and as described above, the precious stone 106a is pressed downward, and caulking is performed to provide a good reflecting means without ink adhering to the surface of the glass sphere, and the air layer 107 is made uniform. It is possible to form with a certain dimension in a small gap.

  In this way, a light-transmitting fine sphere such as a glass sphere is used as the light reflecting means, and the air layer forming means is used when the shape of the back surface of the precious stone and the shape of the concave portion on the inner periphery are substantially the same and uniform. The method of sharing the spacing member can be applied to the subsequent embodiments as well.

In the present embodiment, the caulking method is employed as a method for fixing the precious stone 106a to the inner circumferential concave portion 106g of the pedestal portion 106b, and no adhesive is used. The reason why the air layer 107 is formed by not using an adhesive for fixing the precious stone 106a and by fixing the precious stone 106a through the separation member 109, and the reflective layer 108 made of ink is not in contact with the back side of the precious stone 106a. Is described below.

  When light is incident on a boundary surface between two substances having different refractive indexes at a predetermined angle, so-called light refraction occurs in which the traveling direction of transmitted light after passing through the boundary surface is bent with respect to the incident light. In addition, when light travels from a material with a high refractive index to a material with a small refractive index, the refraction angle is always larger than the incident angle. Total reflection that reflects off the surface occurs. The incident angle at which total reflection occurs is called a critical angle, and it is known that the larger the difference in refractive index, the smaller the critical angle, that is, total reflection tends to occur.

  In the present embodiment, when the reflective layer 108 is formed of a bright pigment ink, the ink is generally an epoxy or acrylic resin, and its refractive index is around 1.5. When the precious stone 106a is emerald, the refractive index is about 1.56, and the ruby or sapphire is about 1.77, which is close to the refractive index of the ink, and when the ink layer is in close contact with the pavilion side (back side) of the precious stone 106a, Total reflection in the pavilion is less likely to occur, and the brightness of the precious stones as viewed from the viewing side is retracted.

  As shown in FIG. 5, the reflective layer 108 formed on the back surface side of the precious stone 106 a and the pavilion of the precious stone 106 a in the inner circumferential concave portion 106 g of the pedestal portion 106 b and the pavilion of the precious stone 106 a form an air layer 107. There is no direct contact. By contacting almost the entire rear surface of the pavilion of the precious stone 106a with air having a low refractive index (refractive index of about 1.0), the proportion of light reflected from the front surface side that is reflected in the pavilion increases. In combination with the reflection effect of the reflective layer 108, an effect of increasing the brightness of the precious stone 106a viewed from the viewing side can be obtained.

  Even with a diamond having a large refractive index (refractive index of about 2.4), the air layer is provided on the back surface of the pavilion as in this embodiment, and the difference in the refractive index at the boundary surface is increased to increase the brightness. An effect is obtained.

  In addition, in this embodiment, when fixing the precious stone 106a to the pedestal portion 106b, the pressing claw 106d is used to fix the precious stone 106a, and the reason is that the precious stone 106a is not fixed by a method of applying an adhesive to the back and side surfaces of the precious stone 106a. Based on the same theory, since many adhesives such as epoxy and acrylic have a refractive index of about 1.5, by passing this adhesive layer on the back side of the precious stone 106a, the precious stone 106a is transmitted. The purpose is to prevent the amount of external light reflected from the front surface from being reflected inside the precious stone pavilion, thereby reducing the brightness.

  Since the formation purpose, operation and effect of the air layer 107, and the decorative member such as precious stones are not fixed by an adhesive in principle, they are completely the same in the following embodiments, and thus redundant description is omitted.

  In the present embodiment, the gap between the pavilion part on the back of the precious stone 106a and the inner peripheral concave part 106g of the pedestal part 106b is substantially uniform through the air layer 107, and the inner peripheral concave part 106g is a mechla hole. In addition, light reflection by the reflective layer 108 is uniformly performed from the back side and the side surface side of the precious stone 106a, and there is no unevenness or shadow of reflected light called color loss, and in the case of a colored precious stone, uneven color is generated. In addition, it is possible to obtain an excellent effect in which the precious stone 106a is shined by the reflective layer 108 and visually recognized.

In addition, although this embodiment was mainly introduced as an embodiment in which a light transmissive decorative member such as a precious stone is attached to a watch display board of a portable watch via a pedestal, a place other than the display board of the portable watch, for example, FIG. This embodiment is also suitable for a case where a precious stone is to be fixed to a desired location of the bezel surface of the case 520 and the watch band 530 in FIG. When the pedestal 106b can be used, the present embodiment is left as it is, and when the pedestal 106b is difficult to use, for example, when it is difficult to use the pedestal 106b from the bezel or the watch band surface as shown in FIG. What is necessary is just to carry out the hole processing equivalent to the inner peripheral concave part 106g, and to fix the precious stone 106a by caulking by the method of the second modification of the present embodiment described later.

  FIG. 6A shows a cross-sectional view of the precious stone-containing base part 116 used for the timepiece display panel 100 used in the portable timepiece according to the first modification of the first embodiment of the present invention. In the modification of the present embodiment, the inner peripheral concave portion 116g of the pedestal portion 116b is formed in a stepped shape having a stepped hole 106f as a mecha hole as in the first embodiment.

  In the modification of the present embodiment, the colorless and transparent diamond is used for the precious stone 106a as in the first embodiment. However, the colored diamond, ruby, sapphire, emerald, crystal, purple, whose vertical dimension is suppressed by shallowing the pavilion portion. Any of decorative members having a pavilion having the same shape as the precious stone 106a shown in FIG. 5, such as colorless or colored precious stones such as quartz, translucent ceramics, translucent resin, and glass can be mounted.

  The reflective layer 108 applied to the side surface side and the back surface side of the inner circumferential concave portion 116g can be used in the same manner as in the first embodiment.

The modification of the present embodiment is characterized in that a step portion 106f is formed on the inner peripheral portion of the inner peripheral concave portion 116g. The step portion 106f corresponds to the air layer forming means of the first embodiment, and in the following embodiments, the step portions 116f, 136f, 166f, and 186f, which will be described later, similarly serve as the air layer forming means. . That is, among the surface of the pavilion portion on the back surface of the precious stone 106a and the inner surface of the inner peripheral recess portion 106g of the pedestal portion 106b that are exposed in the inner peripheral concave portion 106g of the pedestal portion 106b, a part of the latter is a pavilion on the back surface of the precious stone 106a. It protrudes as a stepped portion 106f on the surface side of the portion, and the surface of the pavilion portion on the back surface of the precious stone 106a is separated from the inner surface of the inner peripheral concave portion 106g of the pedestal portion 106b.
An air layer 107 is formed by the pavilion part on the back of the precious stone 106a, the inner peripheral concave part 106g of the pedestal part 106b, and the step part 106f. When fixing the precious stone 106a to the pedestal part 116b, the step 106f previously formed in the inner peripheral concave part 106g is used, and the pavilion part on the back of the precious stone 106a and the pedestal part 116b are in a ring-shaped minimum area. As shown in FIG. 6, the shape and size of the inner peripheral concave portion 116g are determined so that the air layer 107 is generated between the pavilion portion and the inner peripheral concave portion 116g of the pedestal portion 116b. The planar shape obtained by cutting the back pavilion portion of the precious stone 106a with an arbitrary horizontal surface is generally a polygon, and the contact with the step portion 106f that circulates the inner peripheral concave portion 116g is a point contact corresponding to the number of corners of the polygon. The actual contact area is very small.

  In the modification of the present embodiment, since it is the same as the first embodiment, the reflection layer 108 formed in the inner circumferential concave portion 116g does not cause unevenness or shadow of reflected light called color loss, and is a colored precious stone. In this case, color unevenness does not occur, and an excellent effect of shining the precious stone 106a by the reflective layer 108 can be obtained.

  In comparison with the first embodiment, since the gap between the pavilion portion on the back of the precious stone 106a and the inner peripheral concave portion 116g of the pedestal portion 116b is not uniform, unevenness of reflected light is likely to occur compared to the first embodiment. In the embodiment, by providing the step portion 106f as the air layer forming means, the same effect as that of the separation member 109 in the first embodiment can be obtained. Therefore, it is necessary to separately provide the separation member for forming the air layer 107. There is no advantage.

FIG. 6B shows still another example of the first modification of the first embodiment. The difference is the step 116.
f is composed of two stages. As shown in a comparison between FIG. 6 (a) and FIG. 6 (b), by providing a plurality of step portions 116f, a step portion shape corresponding to the back surface shape of the precious stone 106a can be formed in the inner peripheral recessed portion 116g. It is possible to fix the precious stone 106a more stably, and the unevenness of the light reflection of the reflective layer 108 due to the gap between the back surface portion of the precious stone 106a and the inner peripheral concave portion 116g approaching a more uniform direction. The effect of being visually recognized with a more uniform brightness is obtained.

  Although it is possible to increase the stepped portion 116f to three or more steps, the processing of the inner peripheral recessed portion 116g becomes complicated.

  FIG. 7 is a cross-sectional view of a portion in which a precious stone is caulked and fixed directly to the front surface side of a watch display plate 200 used in a portable watch according to the second modification of the first embodiment of the present invention. The present embodiment is different from the first embodiment in that it is a method of caulking and fixing the precious stone 106a directly to the hole formed in the display board substrate 121 without using a pedestal.

  In the modification of the present embodiment, the precious stone 106a, the reflective layer 108, and the separation member 109 are the same as those in the first embodiment, and the shape and formation method of the inner circumferential concave portion 126g formed on the display substrate 121, and the formation method of the air layer 107 Is the same as that of the first embodiment.

  Since the pedestal 106a is not used in the modification of the present embodiment, a method for fixing the precious stone 106a is as follows. A part of the display substrate 121 at the outer peripheral edge on the front surface side of the inner peripheral concave portion 126g is 3 to 6 metals. The part is directly raised with a dedicated tool and fixed by caulking by a method of forming a claw equivalent part.

  When the precious stone 106a having the same girdle outer diameter of 1.2 mm and the thickness dimension of 0.45 mm as in the first embodiment is directly caulked and fixed to the hole formed in the display board substrate 121, the display board substrate having a thickness of 0.5 mm is Since the formation of the holes is difficult due to processing restrictions, the display plate substrate 121 used in the modification of the present embodiment uses a brass plate having a thickness of 0.8 mm.

  In the modification of the present embodiment, the action, effect, and feature of making the precious stone 106a shine with the reflected light of the reflective layer 108 through the air layer 107 are the same as those of the first embodiment.

  Since the base 1 is not used in the first modification of the first embodiment, the vertical thickness of the display board substrate 121 can be kept thin even when the precious stone 106a is fixed. Further, the embodiment 1 is more suitable than the first modification of the first embodiment, which is suitable for a case where a precious stone is to be fixed to a place other than the display board of the portable watch, for example, the bezel surface of the case 520 and the watch band 530 in FIG. It is a form. Since the pedestal is not used, the fixing method is suitable when it is desired to suppress the amount of protrusion of the precious stone 106a from the bezel or watch band surface as much as possible in addition to the display plate. It is possible to supplement the fixing strength of the precious stone 106a by caulking by applying an adhesive to the outer periphery of the precious stone 106a within a range that does not rotate as much as possible to the back pavilion.

  FIG. 8 shows a cross-sectional view of a precious stone-containing base component 136 used for the timepiece display panel 100 used in the portable timepiece according to Embodiment 2 of the present invention. A different part from the first embodiment of the present embodiment is that the inner peripheral concave portion 136g for mounting the precious stone 106a of the pedestal portion 136b is a through hole instead of a mechula hole, and other than that, the modified example of the first embodiment This is the same content as 1.

As described in the first embodiment, in the precious stone 106a that is thinned by increasing the cone angle of the back pavilion, external light incident from the front surface side is likely to leak from the back surface of the pavilion. If the inner concave portion 136g is a through hole, unevenness due to reflected light called color loss as described above occurs, which is not preferable as the visual quality of the precious stone 106a. However, in order not to increase the thickness of the entire portable watch, which is one of the problems of the present invention, it is necessary to suppress the thickness of the entire display board substrate including decorative members such as precious stones, and the vertical dimension of the pedestal is also suppressed. Should.

  As in the first embodiment, it is necessary to allow for the remaining thickness not to be a through-hole in order to make the inner peripheral concave portion that is a fixing hole of the light transmissive decorative member a through hole, and the vertical dimension of the pedestal is It must be suppressed so that it does not become too large, resulting in technical limitations in processing. In the present embodiment, the fixing hole of the precious stone 106a is a through-hole at the time of processing, and the effect equivalent to that of a mecha hole is obtained by closing it with a shielding member from the back side, that is, light is reflected on the entire area on the back side and side surface side of the precious stone 106a. The object is to form means and to form the air layer 107. Compared with the mechla hole, since the through hole is easy to process, the vertical dimension of the pedestal part 136b can be suppressed relatively easily, and the timepiece of the portable timepiece incorporating the precious stone which is one of the objects of the present invention. Therefore, it is possible to provide a portable timepiece in which the thickness dimension of the entire timepiece is not increased while the thickness dimension of the timepiece display plate is suppressed and sufficient brightness and decorativeness can be obtained even when a thin precious stone is used. Since the gap between the inner peripheral recessed portion 136g and the back and side surfaces of the precious stone 106a is not uniform, the reflected light is more uniform in the first embodiment.

In FIG. 8, the precious stone 106a is a colorless and transparent diamond in which the cone angle is increased, the pavilion portion is shallow, and the thickness method is suppressed, as described in the first embodiment.
The inner peripheral concave portion 136g of the pedestal portion 136b is a through hole, and when the precious stone 106a is fixed to the pedestal portion 136b, the stepped portion 136f formed in the inner peripheral concave portion 136g in advance is used as an air layer forming means. As shown in FIG. 8, the pavilion portion on the back surface of 106a and the pedestal portion 106b are brought into contact with each other in a ring-shaped minimum area, and as shown in FIG. 8, in addition to the back surface of the precious stone 106a, the inner circumferential concave portion 136g, and the step portion 136f The point that the air layer 107 is configured by the shielding member 104 is partially different from the first embodiment in that the shielding member 104 is added. Then, when the precious stone 106a is fixed, the reflective layer 108 is formed over the entire area of the inner peripheral concave portion 106g of the pedestal portion 136b on the back surface side and the side surface side as viewed from the front surface side.

  The shielding member 104 disposed on the back surface of the precious stone entrance pedestal component 136 has a base material 104a and a reflective film 104b applied to the front surface side of the base material 104a, that is, the surface facing the pavilion portion on the back surface of the precious stone 106a. To form. After forming the reflection film 104b, the shielding member 104 is bonded to the back surface of the precious stone-containing base part 106 with an epoxy adhesive or the like. At that time, care should be taken so that the adhesive does not enter the inner peripheral recessed portion 136g of the base component 136. This is to prevent adhesive from adhering to the reflective film 104b and impairing the reflective function.

  In this embodiment, an acrylic resin sheet having a thickness of 0.16 mm is used as the base material 104a, and an acrylic ink obtained by mixing about 10% by weight of the same silver-based bright pigment as that of the first embodiment in an acrylic binder is used as the reflective film 104b. The film was formed by coating with a thickness of 40 μm to 60 μm. The reflective layer 108 formed on the inner peripheral concave portion 136g of the pedestal portion 136b was also formed by applying the same bright pigment as that of the reflective film 104b.

  The reflective film 104b and the reflective layer 108 may be formed of different bright pigments. If the reflective layer 108 is formed of ink containing the same silver gold-based bright pigment PMT1030GP manufactured by Matsuo Sangyo Co., Ltd., slightly champagne Reflected light mixed with gold was obtained, and an excellent reflecting effect for shining and shining the precious stone 106a in a modest gold color tone was obtained.

  When a precious stone such as colorless and transparent diamond is used for the precious stone 106a, the reflective film 104b and the reflective layer 108, which are light reflecting means, are colorless, silver, or a gold-based gold having a modest color tone, and have a high glitter. It is confirmed that by using a reflective material having the same or close color tone and shine, the pavilion is shallow as in the first embodiment, and a shine that is not inferior to a brilliant cut can be obtained even with a precious stone with a thin vertical dimension. It was done.

  In addition, as the shielding member 104, a metal thin plate with a surface close to a mirror surface, such as aluminum, or a resin film in which aluminum or chromium is vapor-deposited with a thickness of 0.05 mm to 0.2 mm on the surface (for example, an inexpensive reflective sheet for gardening) It was confirmed that even when a material having a high surface reflectance such as the above was selected and used, a reflection effect substantially inferior to that of the reflective layer 104b using the bright pigment ink was obtained.

  In addition, even when the reflective film 104b and the reflective layer 108 are formed by using a silver-based dye ink added with 10 to 20% by weight of glass spheres of 10 μm to 30 μm and a paint having glitter, as in the first embodiment, glass is used. A similar light reflection effect was obtained by diffuse reflection of the sphere.

  A light reflecting material for the reflecting layer 108 formed on the inner concave portion 136g, and a light reflecting material for the reflecting film 104b of the reflecting member 104, such as a bright pigment ink, a dye ink added with glass spheres, a paint having a glittering property, and The contents using a mirror-finished metal thin plate or a metal-deposited sheet as the shielding member 104 can be used in the following embodiments as well.

  Further, although not shown in the figure, as shown in FIG. 6B, another example of the first modification of the first embodiment, that is, if the step 136f is configured in two or more steps, The gap between the air layer 107 formed by the circumferential concave portion 136g and the shielding member 104 becomes more uniform, and the light reflection effect is enhanced. About this structure and an effect, it is completely the same also in subsequent embodiment which has a step part in an inner peripheral recessed part.

  As a place where the shielding member 104 is formed on the display board substrate 101 in the present embodiment, as shown in FIG. 9A, it is formed on at least the base part 136b on the back surface of the precious stone-containing base part 136 of the display board substrate 101. The size of the through-hole back surface side may be dispersed and bonded to four locations, and as shown in FIG. 9B, at least the pedestal portion 136 is formed in the portion where the precious stone-containing pedestal component 136 is formed. A method of bonding the shielding member 104 formed in a ring shape with inner and outer diameter dimensions so as to cover the entire back surface side of the through hole may be used. In the case where all the precious stone entry pedestal components 136 are mounted from the 1 o'clock equivalent part to the 12 o'clock equivalent part of the time character index, the method shown in FIG. 9B is effective on the work surface for bonding the shielding member 104. is there. Although not shown, the same effect can be obtained even if a shielding member 104 having substantially the same size and shape as the display board substrate 101 is formed and bonded so as to cover the entire back surface of the display board substrate 101. The shape of the shielding member and the bonding region are the same in the following embodiments.

  Further, in the shielding member 104 shown in FIG. 8, after the pedestal portion 136b is fixed to the mounting hole of the display board substrate 101, a member having an outer diameter larger than the lower outer diameter of the foot portion 106e of the pedestal portion 136 is bonded. As introduced in the example, the reflecting member 104 is formed to have an outer diameter smaller than the lower outer diameter of the foot portion 106e and larger than the inner diameter of the pedestal portion 136b and bonded to the lower surface of the pedestal portion 136b. For example, it can be handled as a precious stone-containing pedestal component 136 in which the shielding member 104 has been formed in advance, and it is possible to simplify the labor of pasting the shielding member 104 after fixing the display board substrate 101 to the mounting hole. In this case, the shape of the shielding member 104 and the bonding location are limited to the positions shown in FIG.

  Furthermore, in this embodiment, the shielding member 104 was introduced by a method in which the shielding member 104 is partially or entirely bonded to the back surface of the display board substrate 101 with an adhesive or the like. As a reflection sheet for the entire surface, a portable watch 500 may be configured in which a fitting portion is formed on the inner periphery of the case of the portable watch, and is fixed to the back surface of the display board substrate 101 with a gap of 0.05 mm to 0.1 mm. Is possible. The application of this configuration is exactly the same in the following embodiments using the shielding member.

In the present embodiment, when the reflective layer 108 is formed of ink containing a bright pigment, the reflective layer 108 is applied to the inner peripheral concave portion 136g of the pedestal portion 106b with a face brush or the like as in the first embodiment.

  In addition, the reflective film 104b may be formed by coating the base material 104a made of an acrylic sheet to a desired size with a press or the like, and then individually applying ink. It is economical to stamp the desired size after printing. The latter method is used in this embodiment.

  In the present embodiment as well as the first embodiment, the precious stone 106a which is a decorative member such as a time letter is colorless or transparent such as colored diamond, ruby, sapphire, emerald, crystal, purple crystal, and the like, which has light transmissibility in addition to colorless and transparent diamond. Even if it is a colored precious stone, or even a translucent ceramic, resin, glass, etc., if it is a decorative member having a pavilion of the same shape as the precious stone 106a, the same effect can be obtained in increasing the brightness.

  FIG. 10 shows a cross-sectional view of a precious stone-containing base component 146 used in a watch display plate 100 used in a portable watch according to a modification of the second embodiment of the present invention. The difference between the second embodiment and the second embodiment is that the reflective film 114b and the reflective layer 118 are formed by plating having a glittering property, instead of forming the reflective film and the reflective layer by the glitter pigment ink or the like. The rest is the same as in the second embodiment. As the shielding member 114, a base plate 114a having a thickness of 0.15 mm, a steel plate having at least a front surface close to a mirror finish, and a bright nickel plating as a reflective film 114b having a thickness of 1 μm to 2 μm was used. The reflective layer 118 was also formed with the same bright nickel plating 1 μm to 2 μm.

  Regarding the action and effect in this embodiment, the reflection effect in the second embodiment using the reflective film 104b and the reflective layer 108 made of bright pigment ink or glass microspheres is slightly higher, but the back surface of the precious stone 106a and the inner circumference The concave portion 136g, the stepped portion 136f, and the shielding member 114 constitute the air layer 107, and the reflective film 114b and the reflective layer 118 reflect the precious stone 106a made of colorless and transparent diamond from the back side and the side surface. The effect to make it disappear was obtained. In this embodiment, an example in which the reflective film 114b and the reflective layer 118 are formed by bright nickel plating as the light reflecting means has been introduced. However, the reflective film 114b and the reflective layer 118 are formed by wet plating such as chromium plating or dry plating such as sputtering or ion plating. The same effect can be obtained if the silver or gold-based light reflecting means with high glitter is used.

  As an example of wet plating, when the plating layers are formed in the order of 5 μm copper plating, 1 to 2 μm nickel plating, and 0.2 to 0.5 μm gold plating, light reflecting means with excellent luster and decorative properties can be formed at a relatively low cost. Is possible.

  In addition, by making the processed surface of the inner peripheral recessed portion 136g of the pedestal portion 146b into a finer surface finish, a reflection effect close to a mirror surface can be achieved after performing bright plating.

In the modification of the present embodiment, the reflection film 114b and the reflection layer 118, which are light reflecting means, are formed by bright plating or the like, so that the entire pedestal portion 146b is plated, and the entire pedestal portion 146b shines brightly. The outer peripheral edge of the pedestal portion 146b also shines, and the effect of conspicuous shine by the reflected light of the precious stone 106a is slightly retreated. Here, the outer peripheral edge of the pedestal portion 146b refers to the outer peripheral end surface on the front surface side of the pedestal portion 146b in FIG. However, in the modification of the present embodiment, as an advantage by comparison with the first embodiment, there is an advantage that the reflecting member 114 and the reflecting layer 118 are formed by plating and can be easily manufactured at low cost. Further, the outer peripheral edge of the pedestal portion 146b and the size of the claw 106d are reduced to make it difficult to see from the front side, or the outer peripheral edge of the pedestal portion 146b and the portion of the claw 106d are masked for other portions. By applying a matte finish, such as sandblasting, before the plating process, the precious stone 106a
The effect of making the brilliance stand out.

  In the modification of the present embodiment as well, even if the precious stone 106a is not necessarily a colorless and transparent member as in the first and second embodiments, an effect of shining it from the back side can be obtained if it is a light transmissive decorative member.

  FIG. 11 is a cross-sectional view of a precious stone-containing base part 156 used for the timepiece display panel 100 used in the portable timepiece according to Embodiment 3 of the present invention. The difference between the first and second embodiments of the present embodiment is that the precious stone 116a, the reflective layer 128 formed on the inner peripheral concave portion 136g of the pedestal portion 156b of the precious stone containing pedestal component 156, and the front surface side of the shielding member 124 are formed. The second embodiment is the same as the second embodiment in that the inner peripheral concave portion 136g of the pedestal portion 156b is a through hole.

  In this embodiment, as the precious stone 116a, the same shape and dimensions as those in the first and second embodiments are used, and pink colored diamond is used.

  In addition to colorless and transparent diamonds, there are violet, red, pink, blue, yellow, purple, green, orange, and other colored gemstones such as brown, gray, white, and black. For the purpose of increasing, it is often mounted as a decorative member on the time-character indicator of a portable watch display board, a case side surface called a bezel, or a watch band surface. Above all, pink diamonds are widely used mainly for women's mobile watches.

  In the present embodiment, the reflective layer 128 formed on the inner peripheral concave portion 136g of the pedestal portion 156b and the reflective film 124b formed on the viewing side of the shielding member 124 are made of pigment ink having the same color as the colored precious stone 126a. Colored ink obtained by adding 15% by weight of a ceramic powder kneaded powder (pink) sold by Antec Co., Ltd. to urethane-based ink is formed on the reflective layer 128 and the shielding member 124 of the inner peripheral concave portion 136g of the pedestal portion 156b. The reflective film 124b was formed by coating.

  Natural colored precious stones have color variations, and when multiple colored precious stones are used as the time indicator of a clock display board, the number of colored ones selected or the number of colors or color densities used When using similar colors for each mounted block, it is possible to select precious stones with different colors or arrange precious stones with similar color ranks on the same display board. There is no effective means other than the above, and due to restrictions such as sorting, stratification time, yield, etc., it has caused an increase in the cost of the clock display board using a plurality of colored precious stones as time-character indicators and the clock itself. However, by providing light reflecting means similar in color to the colored precious stones on the back and side surfaces of the precious stone as in the present embodiment, the effect of complementing and enhancing the color tone of the precious stone by reflection by the colored light reflecting means can be obtained. It became possible to alleviate the variation in color of precious stones.

  As a result, it was possible to solve the problems of visual quality and cost increase related to variations in the color of the precious stones of the display panel for a portable watch using a plurality of colored precious stones. In the present embodiment, an example in which colored precious stones are used for four time characters has been introduced. However, as the number of use increases, such as using colored precious stones for all 12 time characters, the variation in precious stone colors due to the color tone complementation of the present embodiment increases. The effect of reduction is great.

  Even if only one colored precious stone is attached to the clock display board or watch case, etc., if the same watch is displayed at the storefront or the user purchases and compares the same watch, more than one When users purchase and compare the same watch, there may be noticeable color variations in colored precious stones. According to the present embodiment, even in the case of a portable watch equipped with only one colored precious stone as described above, the effect of relaxing the color variation between the precious stones to make it inconspicuous, that is, the precious stone between the products of the portable watch. The effect of reducing variations in color tone quality can be obtained.

  In the present embodiment, in addition to the method of forming the pink reflective layer 128 and the reflective film 124b with the ink using the pink pigment, the pink reflective layer and the reflective film are formed by mixing the red pigment and the white pigment. The method was also implemented.

  As an advantage of forming the reflective layer 128 and the reflective film 124b by this method, it is possible to slightly change the color tone and density of the reflected light. The mixture of 65% red pigment and 35% white pigment resulted in a dark pink reflective layer with more reddishness. As a result, the brightness and color tone of the precious stone 116a with a dark pink color were obtained.

  That is, the reflection layer 128 and the reflection film 124b, which are dark pink with emphasized redness, have a higher effect of complementing and enhancing the light pink precious stone with the dark pink color, and the pink color of the precious stone 116a. Excellent results were obtained in terms of complementation and mitigation of variability.

  From the result obtained in the present embodiment, when the purpose is to supplement and alleviate the color variation of the plurality of colored precious stones 116a, the reflective layer 128 and the reflective film 124b have the same or the same color tone. It is preferable.

  Furthermore, if the objective is to complement or alleviate variations in color density and vividness of multiple colored precious stones, the color must be adjusted to the darkest color among the dispersed precious stones, or to a darker color than the darkest color. It has been confirmed that setting the color density of the reflective layer 128 and the reflective film 124b has a greater effect of complementing the color tone of light-colored precious stones and is more effective in reducing the variation range of color density.

  This effect is more pronounced with precious stones with high light transmittance.

  Further, regarding the effect of complementing and mitigating the variation in the color of the precious stone obtained by forming the light reflecting means having a slightly darker color than the color of the colored precious stone on at least one of the back side or the side of the precious stone, preferably both. In the case of a single portable watch, for example, to reduce the variation in color among colored precious stones that are mounted on the display board, or when comparing portable watches that have only one precious stone It is also effective in reducing the variation in the color of decorative materials such as precious stones among multiple portable watches, and also in the effect of vividly showing the color and shine of only one precious stone mounted. Was also confirmed.

  In this embodiment, an example in which a pink diamond is used for the precious stone 116a has been introduced. However, as described above, even a colored diamond such as violet, red, pink, blue, yellow, purple, green, orange, or even sapphire ( Even if it is a precious stone other than diamond, such as blue or pink), ruby (red), emerald (green), etc., the reflective means of the same or similar color as the colored precious stone is seen from the front side and the back side of the precious stone Alternatively, by forming it on at least one of the side surfaces, preferably both, it is possible to obtain an effect of complementing and mitigating the color variation of the colored precious stones. In addition, this technique can be similarly applied to a timepiece display board that uses two or more light-transmitting precious stones as a decorative member such as a time-character indicator.

Further, in the present embodiment, the light reflection means having the same or similar color as the colored precious stone is formed on the back surface side and the side surface side of the precious stone when viewed from the front surface side, thereby complementing and mitigating the color variation of the colored precious stone. As introduced in terms of effects, at least one design accessory is installed in places other than the clock display board in terms of the effect of complementing the color of colored precious stones with the light reflecting means formed on the back and side surfaces of the precious stones. In some cases, color variations between colored precious stones, or precious stone color variations between portable watches equipped with precious stones can be supplemented or alleviated. By forming the reflecting means, it is possible to increase the color variation of the watch display board.

  For example, if the light reflecting means formed on the back side and the side of the precious stone is dark red, when a light glossy ruby is attached to the precious stone, and the light reflecting means is a dark blue color tone, the thin shiny blue sapphire is applied to the precious stone. By attaching light reflecting means of a color darker than the color of a decorative member such as a jewel when worn, the color tone of the decorative member can be visually recognized, and a visual quality equivalent to an expensive decorative member can be obtained. An effect is obtained.

  Here, the place other than the timepiece display board is a place other than the portion corresponding to the time indicator on the display board of the portable timepiece, or a desired place of the bezel surface of the case 520 and the watchband 530 in FIG.

  In the present embodiment, the method for forming the colored light reflecting means using the ink mainly containing the colored bright pigment has been described. However, as in the first and second embodiments, 10 μm to 30 μm glass beads are used instead of the bright pigment. Even when the reflective film 124b and the reflective layer 128 are formed with a thickness of 40 μm to 60 μm by using an ink of a dye having a desired color tone added to 20% by weight or a colored paint having a glittering property, substantially the same effect is obtained. It was.

  Also in this embodiment, as in Embodiments 1 and 2, the precious stone 116a is fixed to the pedestal portion 156b by caulking, and no adhesive is used. Further, the effects of the stepped portion 136f of the inner peripheral concave portion 156g and the air layer 107 of the base portion 156b are exactly the same as those of the first and second embodiments.

  Further, when the colored precious stone in the present embodiment is mounted on a display board or other desired place of the portable watch, the light reflecting means having the same color or the same color as the colored precious stone is formed on the back surface side and the side surface of the precious stone. In terms of the effect of complementing and mitigating the variation in the color of the light, the light reflecting means having the same or slightly darker color as the colored precious stone is used by using the pedestal portion 106b of the mekura hole as in the first embodiment shown in FIG. The same effect can be obtained even when formed on at least one of the back side or the side surface, preferably both.

  When the precious stone back surface shape and the cross-sectional shape of the inner peripheral concave portion are substantially the same as in the first embodiment, a glass sphere or translucent resin sphere having a diameter of 0.08 mm to 0.2 mm is used as a colored reflective layer such as ink By adding 10% by weight in the same manner as in the first embodiment, the glass sphere or translucent resin sphere serves as a separating member (air layer forming means).

  FIG. 12 shows a cross-sectional view of a precious stone-containing base part 166 used for the timepiece display panel 100 used in the portable timepiece according to Embodiment 4 of the present invention. This embodiment differs from Embodiments 2 and 3 only in the shape of the precious stone 126a.

  The shape of the precious stone 126a used in the present embodiment is different from that of the precious stones used in the first to third embodiments. The precious stones used in the first to third embodiments are those in which the precious stones are thinly suppressed by increasing the angle of the conical pavilion on the back surface. In this embodiment, the pavilion on the back surface of the precious stone described in FIG. Is cut into a substantially trapezoidal cross section, and the thickness is suppressed.

  As the material of the precious stone 126a, the transparent or precious stone such as colorless or colored diamond, ruby, sapphire, emerald, crystal, purple crystal, etc. used in the first to third embodiments, translucent ceramics, translucent resin, glass Etc. can be used without particular limitation.

As the precious stones to be mounted on the display board of the portable watch, there is a case where the back surface like the precious stone 126a shown in FIG. Many. In this shape, since there is a lot of external light leaking from the flat part on the back surface of the precious stone, it is difficult to obtain a good brightness as a precious stone.

  In this embodiment, the principle that the precious stone 126a shines from the back side by the reflective layer 168 formed on the inner peripheral concave portion 166g of the pedestal portion 166b and the reflective film 164b formed on the front surface of the shielding member 164 is described. This is basically the same as the second and third embodiments.

In this embodiment, unlike the pavilion-shaped precious stone with a large conical angle on the back surface of the first to third embodiments, the back surface of the precious stone 126a is a flat shape with a wide area, so that the external light incident from the front surface of the precious stone 126a Among them, light below the critical angle passes through the back surface, is reflected by the reflective film 164b substantially parallel to the precious stone 126a, and returns to the precious stone 126a again. Light with an angle exceeding the critical angle causes total reflection at the back flat portion of the precious stone 126a.
As described above, in this embodiment, most of the back surface of the precious stone 126a is composed of a flat surface that is substantially parallel to the display board substrate 101 and the reflective film 164b that is also parallel to the precious stone 126a. Further, the precious stone can be made thinner than in the first to third embodiments, and even with such a very thin precious stone, the effect of shining the precious stone 126a by the back side reflecting means can be obtained. Further, compared to the case where the inner peripheral concave portion 166g is only a through-hole and the reflection film 164b of the shielding member 164 is not present, the precious stone 126a is shined by the reflecting means, or by the reflecting means when the precious stone 126a is a colored precious stone. The same effects as those of Embodiments 1 to 3 are also obtained in that the effects of color tone complementation, emphasis, and reduction of color unevenness in precious stones are obtained.

  Moreover, in the precious stone of the shape used in Embodiments 1 to 3 to increase the thickness of the rear pavilion cone angle, the reflective means on the side surface of the precious stone among the reflecting means formed on the inner peripheral concave portion, that is, the display The reflected light from the reflecting surface perpendicular to the plate substrate 101 has a very large pavilion cone angle, for example, as shown in FIG. Although it does not contribute so much and even if omitted, the precious stone in the shape of the present embodiment cuts the pavilion part of the brilliant-cut precious stone into a trapezoidal cross section as shown in FIG. Therefore, the trapezoidal pavilion cone angle is smaller than that of the precious stones of the first to third embodiments, and the light reflected by the reflecting means on the side surface of the precious stone is also reflected by the reflecting means on the back side and the side surface. Great for reflection Ku to contribute.

  The precious stone 126a used in the present embodiment is only different in shape from the precious stones used in the first to third embodiments, and the type and material of the precious stone are the colorless and transparent precious stones and colored precious stones used in the previous embodiments. Either of these can be selected and used. Therefore, the reflective film 164b formed on the front surface of the shielding member 164 and the reflective layer 168 formed on the inner peripheral concave portion 166g of the pedestal portion 166b are also colorless, colored, etc. of the precious stones used in the first to third embodiments. The type and the light reflection and color tone compensation corresponding to the target reflection effect and the color enhancement effect can be selected and formed.

  Even in the present embodiment, the light reflecting means corresponding to the type of the precious stone is formed on the back and side surfaces of the precious stone, so that the pavilion portion is thin as in the first to third embodiments, and the precious stone has a thin vertical dimension. The brilliance was not inferior to that of the Brillian cut. Although the step portion 166f has been described as an example of one step, it can be formed in two or more steps as in the first to third embodiments.

  In addition, when colored precious stones are used, light reflection means having the same or similar color as the precious stones are formed on the back and side surfaces of the precious stones, thereby complementing and mitigating variations in the colors of the plurality of colored precious stones described in the third embodiment. And the color of colored precious stones can be emphasized.

FIG. 13: shows sectional drawing of the precious stone entrance base component 176 used for the display panel 100 for timepieces used for the portable timepiece which concerns on the modification of Embodiment 4 of this invention. The modification of the present embodiment is different from the third embodiment only in the shape of the inner peripheral concave portion 176g of the pedestal portion 176b of the precious stone entering pedestal component 176.

  In the present embodiment modification, a cone-shaped slope having a larger angle than the cone angle of the back surface of the precious stone 126a before being cut is used by using the cut-off substantially trapezoidal corner portion of the back surface conical portion of the precious stone 126a. As shown in FIG. 13, it forms in the inner peripheral recessed part 176g.

  In the fourth embodiment, a step portion is formed as an air layer forming means on the inner peripheral concave portion 166g of the pedestal portion 166b as in the second embodiment, so that the back surface of the precious stone is brought into contact with a ring with a minimum necessary area, and from the ink. The reflective layer 168 and the reflective film 164b are configured so as not to directly contact the precious stone 126a. However, in the modification of the present embodiment, the corner of the back surface of the precious stone 126a is used as an air layer forming means. The air layer 107 is secured by the circumferentially concave portion 176 g and the shielding member 164. That is, the former part of the surface of the substantially trapezoidal shaped cross section of the back surface of the precious stone 126a and the inner surface of the inner peripheral concave part 176g of the base part 176b exposed in the inner peripheral concave part 176g of the base part 176b is the base part. The air layer is formed by projecting to the inner surface side of the inner peripheral concave portion 176g of 176b, and separating the surface of the substantially trapezoidal cross-section portion on the back surface of the precious stone 126a from the inner surface of the inner peripheral concave portion 176g of the pedestal portion 176b.

Although not shown, it is also possible to directly caulk and fix the precious stone 126a by directly drilling the display board substrate 101 corresponding to the inner peripheral concave portion 176g of FIG. 13 without using the pedestal 176b. It is. In the second embodiment, the machining hole drilling was the same as before, so the display board substrate 121 was 0.8 mm thick in anticipation of the remaining machining hole hole. However, in the present embodiment, the display board substrate 121 is 0.5 mm to 0.7 mm because it is a through hole. Even a thick display panel substrate can be implemented.
In addition, the shape of the precious stone 126a can be made thinner than that of the precious stone 106a, and there are few restrictions on the remaining thickness of the mechla hole, and a mecla hole is formed in the case, bezel, band, etc. other than the display board. By caulking and fixing 126a, the amount of protrusion of the precious stone 126a from the surface of the case, bezel, band or the like is suppressed, and the effect of preventing the precious stone 126a from falling off from these members can be obtained.

  As a feature of the modification of the present embodiment, it is possible to arrange the reflective layer 178 and the reflective film 164b close to the shape of the back surface of the precious stone 126a, and to irradiate the precious stone with reflected light more uniformly than in the third embodiment. Is possible.

  Moreover, since the inner peripheral concave portion 176g is a through-hole, the hole processing is easy, the vertical dimension of the precious stone-containing base part 176 can be suppressed, and the overall thickness including the decorative member is suppressed. Display panel, and a thin portable watch equipped with the display plate.

  FIG. 14 shows a cross-sectional view of a precious stone-containing base part 186 used for the timepiece display panel 100 used in the portable timepiece according to Embodiment 5 of the present invention. The difference from the first to fourth embodiments is basically only a precious stone 136a as a decorative member fixed to the pedestal portion 186b. The precious stones such as diamond used in the first to third embodiments to increase the cone angle of the pavilion to reduce the thickness dimension, and the pavilion conical portion used in the fourth embodiment is cut into a substantially trapezoidal cross section to measure the vertical dimension. Unlike the thin precious stones that suppress the above, in this embodiment, precious stones that are called cabochon cuts and have a mountain shape with a round outer peripheral cross section on the front surface side are used. Examples of translucent precious stones that are cabochon cut include quartz for colorless and transparent ones, ruby and cat's eye for semi-transparent ones.

  If the precious stone is light-transmitting, even if it is a precious stone such as a cabochon cut shape or a precious stone whose back surface is not a pavilion shape, by providing light reflecting means on the back side and the side surface, An effect of shining the precious stone 136a is obtained.

  In the present embodiment, as shown in FIG. 14, a precious stone 136a having a hemispherical cut cross section and a flat bottom is used. This is one of the problems of the present invention. Also to provide.

  The light that reaches the surface of the hemispherical precious stone 136a is partially reflected, but the other light is incident on the locus corresponding to the refractive index of the precious stone 136a in the same manner as the light incident on the spherical lens. Due to the difference, some are reflected at the bottom but some are transmitted through the bottom. The transmitted light is reflected by the reflective film 174b formed on the back surface side of the precious stone 136a and the reflective layer 188 formed on the side surface side, and the reflected light returns to the precious stone 136a again and exits from the spherical surface. 136a appears to shine.

  The reflection layer 188 and the reflection film 174b can obtain the effect of the kind of precious stone 136a, that is, the material such as colorless and colored, the light transmittance, the light reflection and tone complementing corresponding to the target reflection effect, and the color enhancement effect. Select and form.

  The precious stone 136a used in the present embodiment has been introduced with an example in which the back surface is flat. However, the precious stone 136a is formed on the inner peripheral concave portion 186g as a receiver for the back surface of the precious stone 136a and as an air layer forming means constituting the air layer 107. By devising the shape of the portion 186f as shown in FIG. 14, the contact between the back surface of the precious stone 136a and the reflective layer 188 is formed to circulate in a linear shape, the contact area is minimized, and the air layer 107 is formed on the back surface of the precious stone 136a. It is possible to sufficiently secure the entire area.

  As described above in the present embodiment, in the present invention, a shape other than a precious stone thinned by increasing the cone angle of the pavilion or by cutting the pavilion into a substantially trapezoidal cross section, for example, described in the present embodiment. As described above, when the cross section is a semicircle, the decorative member is transparent or translucent light even if it is a decorative member such as an ellipse, a parabola, or a precious stone having an irregular cross section of a polygon such as a rectangle or a trapezoid. If it is made of a material having transparency, in the portable watch, the light reflecting means is formed on at least one of the back surface or the side surface of the decorative member as viewed from the viewing side, so that the decorative member is illuminated with external light. It is possible to make it shine.

  As for the material of the decorative member, it is not limited to precious stones and jewelry as long as it has a transparent or translucent light transmittance, and light transmission including decorative members such as inorganic glass, light-transmitting ceramics, and light-transmitting resin. There is no limitation on the decorative member, etc., and the light reflecting means formed on at least one of the back side or the side surface, preferably both, makes the decorative member shine and reduces the variation in color of the colored decorative member. Reflective effect that enhances the color can be obtained.

  FIG. 15 shows a cross-sectional view of a precious stone-containing base part 196 used for a timepiece display panel 100 used in a portable timepiece according to a modification of the fifth embodiment of the present invention. In the modification of the present embodiment, the precious stone 146a is a translucent resin formed by a potting technique.

  Potting is a well-known technique that uses a surface of the viscous resin to build up a desired shape, hardens it, and then uses it as a decorative member or protective member. Excellent decorative effect can be obtained. As the resin used for potting, epoxy, silicon, or UV curable resin is used. In addition, potting kits in which a resin and a dispenser are set are commercially available.

  In this embodiment, the base part 196b shown in FIG. 15 is formed by metal cutting. The front surface to which potting is applied is finished in a state close to a mirror surface by buffing or the like, whereby an effective reflection layer 198 for potting resin as a decorative member can be obtained. At that time, attention should be paid so that the edge portion 196h shown in FIG. 15 is not rounded.

  Thereafter, like the modified example of the second embodiment, the pedestal portion 196b is brightly plated, and a transparent epoxy resin having a viscosity of 1,500 to 3,000 centipoise is mixed and stirred by 15% by weight of a blue bright pigment. A predetermined amount of blue epoxy resin was formed in a round shape on the front surface of the pedestal portion 196b by a dispenser and dried and cured at 70 ° C. for 1 hour. The front surface of the mirror-finished pedestal portion 196b 198 Became a reflective layer, and it was possible to obtain a precious stone 146a, which is a resin decorative member having a gem-like visual quality such as blue sapphire and aquamarine.

  In the present embodiment, the addition ratio of the blue bright pigment is set to a small value of 7 to 10% by weight to give a light blue color tone, and the base portion 196b is subjected to blue color plating. Precious stone 146a, which is a resin decorative member having a higher transparency, was obtained.

  The same effect can be obtained by forming the reflective layer 198 by blue alumite treatment using the base portion 196b as an aluminum material. When the reflective layer 198 is formed by anodizing, although not shown, a concave hole is provided on the back surface of the pedestal 196b in FIG. 15, and an electrode mark appears on the front surface side by setting an electrode mark on the inner periphery of the concave hole. Absent.

  In addition, gold, silver, red, purple, and the like can be used for coloring by anodizing.

  In this embodiment, an example in which a blue bright pigment is added to and mixed with a transparent epoxy resin has been introduced. However, a colored epoxy resin, a UV curable resin, or the like may be used. Colorless, transparent or colored resins dedicated to potting are also commercially available, and can be used as long as the conditions are satisfied.

  The planar shape of the pedestal portion 196b can be almost any shape such as a circle, an oval, a rectangle, or a heart shape. It is also possible to use shapes such as Arabic numerals and Roman numerals by an etching method.

  The edge 196i is formed so that the outer side of the edge portion 196h circulates in the same shape as the outer contour of the precious stone 146a, and aims at a design effect that makes the outer shape of the precious stone 146 that is a decorative member stand out. Yes, as a resin piling by potting, the cross-section is rounded and the outer periphery is rounded, so if you want to make the precious stone 146 into a rectangular time letter, Arabic numerals, Roman numerals, etc. In the case of a complicated shape, it is formed when it is desired to sharpen and emphasize a visually recognized outline. If the precious stone 146 is a simple circle, it may be omitted if not necessary in terms of design.

  As a feature of the present embodiment, by using a potting technique, a decorative member having excellent visual quality is obtained by a combination of an inexpensive translucent resin and a light reflecting member. The precious stone 146 that is a decorative member may be formed by making the resin used for potting deeply colored, but the light-transmitting resin is thinned so that the reflective layer 198 of the pedestal portion 196b has the same or similar color. By coloring the eyes, the texture of the precious stone 146 as a resin receded, and a decorative member having a visual quality close to that of a natural precious stone was obtained.

As described above in detail, in the portable timepiece according to the present embodiment, at least one light-transmitting decorative member such as a colorless or colored diamond, ruby, sapphire or the like having a light-transmitting precious stone is used. Fixed to the front surface, the case of the portable timepiece, the surface of the portable watch, and the surface of the band, and light reflecting means is formed on at least one of the back side and the side of the light transmissive decorative member. By effectively reflecting the external light incident from the surface by the light reflecting means, the brightness of the light transmissive decorative member is increased, and even if a thin precious stone is used as a decorative member, it is faded into a full-scale cut. It is now possible to provide a low-priced portable watch that is equivalent to a watch equipped with precious stones with no sparkles.

Further, when a plurality of colored light-transmissive decorative members are used, the light reflecting means is formed in the same or similar color as the colored light-transmissive decorative member, so that the color variation can be supplemented or alleviated. It has become possible. Furthermore, the colored layer as the light reflecting means is formed in a color darker than the color of the colored light transmissive decorative member, and the reflected light is used to make the color variation of the colored light transmissive decorative member more efficient. It became possible to supplement and relax.
Furthermore, the reflection effect of the light reflecting means makes it possible to visually recognize the color of the decorative member more vividly and with a sense of luxury, and the brightness, color tone and color variation of the decorative member attached to the display board, case, band, etc. It became possible to provide a portable watch excellent in price at low cost.

  By using the method of the present invention, it has become possible to form a translucent decorative member having an excellent visual quality at a low price, for example, on a display plate (a dial plate), a case, a band, etc. of a portable watch.

100, 200 Timepiece display board 101, 121 Display board substrate 102 Center hole 103 Printing time character 104, 114, 124, 164, 174 Shield member 104a, 114a Base material 104b, 114b, 124b, 164b, 174b Reflective film 105 106, 116, 126, 136, 146, 156, 166, 176, 186, 196 Precious stone seating parts 106 a, 116 a, 126 a, 136 a, 146 a
106b, 116b, 136b, 146b, 156b, 166b, 176b, 186b, pedestal portion 106c, slit 106d, presser claw 106e, foot portion 106f, 116f, 136f, 166f, 186f stepped portion 106g, 116g, 126g, 136g, 166g, 176g, 186g Inner peripheral concave portion 107 Air layer 108, 118, 128, 168, 178, 188, 198 Reflective layer 109 Spacing member 500 Portable watch 510 Watch body 520 Case 530 Watch band 540 Hand 550 Movement

Claims (9)

In a portable timepiece in which at least one light-transmitting decorative member is mounted on the viewing side,
A portable timepiece characterized in that light reflecting means is provided in at least one region on the back side or side surface side as viewed from the viewing side of the decorative member.   2. The portable timepiece according to claim 1, wherein the decorative member is colored, and the light reflecting means is colored in the same or similar color as the decorative member.   The portable timepiece according to claim 2, wherein there are a plurality of the decorative members, and the color of the light reflecting means provided for each decorative member is darker than the color of the decorative members.   The portable timepiece according to claim 1, wherein an air layer is formed between the decorative member and the light reflecting means.   The portable timepiece is formed with a decorative member arrangement hole in which at least a part of the back side or side surface portion of the decorative member is arranged, and the air layer is formed in the decorative member arrangement hole. The portable timepiece according to claim 4.   A space member is provided between the surface of the decorative member exposed in the decorative member arranging hole and the inner surface of the decorative member arranging hole to separate the surface and the inner surface, thereby forming the air layer. Or at least one of the surface of the decorative member exposed in the decorative member arranging hole and the inner surface of the decorative member arranging hole is formed with a protrusion that separates the surface and the inner surface from each other. The portable timepiece according to claim 5, wherein the air layer is formed.   The cross-sectional shape of the decorative member arranging hole formed in the portable timepiece is the same as the back side shape of the decorative member, and between the decorative member arranging hole and the back side of the decorative member, The portable timepiece according to claim 5 or 6, wherein a gap is provided in which the separation distance is uniform. The decorative member arranging hole formed in the portable timepiece is a through hole,
A blocking means that closes the through hole on the side opposite to the viewing side of the decorative member and has the reflecting means is disposed,
The portable timepiece according to any one of claims 4 to 6, wherein the air layer is formed between the decorative member and the shielding means.   9. The decorative member according to claim 1, wherein the decorative member is any one of colored or colorless precious stones, glass, transparent or translucent ceramics, a translucent resin, and a translucent microsphere. The portable watch according to the item.

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