JP2008122161A - Timepiece-use dial, timepiece, and decorative sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a timepiece-use dial and a decorative sheet which are excellent in optical transparency and esthetic appearance, and to provide a timepiece employing the timepiece-use dial. <P>SOLUTION: The timepiece-use dial 1 is composed of a layered body having a plurality of transparent films 11, and each of the transparent films 11 is made up of a resin material being optically transparent. The layered body has 3 to 50 sheets of transparent films 11, and is characterized in that an air space 12 is disposed between adjacent transparent films 11 in the layered body. The absolute refractive index of the resin material making up the transparent films 11 is 1.4 to 1.6, and the average thickness of the transparent films 11 is 2 to 150 μm. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a timepiece dial, a timepiece, and a decorative decorative plate.

A dial for a solar timepiece (a timepiece equipped with a solar cell) is required to have a function (light transmittance) that transmits a sufficient amount of light so that the solar cell generates a sufficient electromotive force. For this reason, conventionally, a highly transparent plastic member has been used as a dial for a solar timepiece. However, in a solar timepiece using a plastic timepiece dial, the solar cell is conspicuous and the appearance is inferior. In order to solve this problem, by dispersing the glassy diffusing agent in the plastic material constituting the timepiece dial or by roughening the surface, the light incident on the dial is scattered, There is an attempt to make the solar cell less noticeable by utilizing the whitening of the dial itself. (For example, Patent Document 1)
However, the timepiece dial having such a configuration cannot make the presence of the solar cell disposed below the dial sufficiently inconspicuous and does not have a satisfactory aesthetic appearance. It was. Further, in order to make the solar cell sufficiently inconspicuous, it is necessary to increase the content of the diffusing agent in the plastic constituting the dial. In such a case, a sufficient amount of light cannot be applied to the solar cell through the timepiece dial, and a sufficient electromotive force cannot be generated.

JP 2005-189201 A

  An object of the present invention is to provide a timepiece dial having excellent light transmission and an excellent aesthetic appearance, to provide a timepiece having the timepiece dial, and An object of the present invention is to provide a decorative decorative board having excellent permeability and an excellent aesthetic appearance.

Such an object is achieved by the present invention described below.
The timepiece dial of the present invention is a timepiece dial composed of a laminate having a plurality of transparent films,
The transparent film is composed of a resin material having optical transparency,
The laminate has 3 to 50 transparent films,
The laminated body has an air layer between the adjacent transparent films.
Thereby, it is possible to provide a timepiece dial having excellent light transmission and an excellent aesthetic appearance.

In the timepiece dial of the present invention, the absolute refractive index of the resin material constituting the transparent film is preferably 1.4 to 1.6.
Thereby, the aesthetic appearance as a timepiece dial can be made particularly excellent while the light transmittance is sufficiently high.
In the timepiece dial of the present invention, the average thickness of the transparent film is preferably 2 to 150 μm.
Thereby, the strength of the laminate can be made sufficiently high, the durability as a timepiece dial can be made particularly excellent, and the aesthetic appearance is further improved.
In the timepiece dial of the present invention, the transparent film is preferably made of a material containing polymethyl methacrylate.
Thereby, the durability as a timepiece dial and the aesthetic appearance can be made particularly excellent while the light transmittance is sufficiently high.

In the timepiece dial according to the aspect of the invention, it is preferable that the air layer is provided by a spacer disposed between the adjacent transparent films in the laminate.
Thereby, the aesthetic appearance of the timepiece dial can be made particularly excellent while the light transmittance is sufficiently high.
In the timepiece dial of the present invention, the air layer preferably has an average thickness of 2 to 50 μm.
Thereby, the durability as a timepiece dial and the aesthetic appearance can be made particularly excellent while the light transmittance is sufficiently high.

In the timepiece dial of the present invention, a plurality of the spacers are arranged in one air layer,
The average pitch of the spacers is preferably 50 to 2000 μm.
Thereby, durability as a timepiece dial and aesthetic appearance can be made particularly excellent.

In the timepiece dial of the present invention, the spacer is preferably spherical.
Thereby, it becomes easy to control the thickness of the air layer, and the incident light is suitably transmitted and reflected on both surfaces of the transparent film. Thereby, the aesthetic appearance as a timepiece dial can be made particularly excellent while the light transmittance is sufficiently high.
In the timepiece dial according to the aspect of the invention, it is preferable that the spacer is mainly composed of hydrous aluminum silicate.
Thereby, since the adhesiveness between the transparent film and the spacer becomes excellent, the strength of the laminate is further increased, and the durability of the timepiece dial is further improved.

In the timepiece dial of the present invention, it is preferable that a colored film made of a material containing a colorant is included between the transparent films constituting the laminate.
Thereby, the aesthetic appearance of the timepiece dial can be further improved.
In the timepiece dial of the present invention, a colored film composed of a material containing a colorant on the second surface side of the laminate opposite to the first surface that is a surface on which external light is incident. Is preferably arranged.
Thereby, the aesthetic appearance of the timepiece dial can be further improved.

In the timepiece dial of the present invention, it is preferable that a diffusion film having a function of diffusing incident light is included between the transparent films constituting the laminate.
Thereby, the aesthetic appearance of the timepiece dial can be further improved.
In the timepiece dial of the present invention, the diffusion film has a function of diffusing the incident light on the second surface side opposite to the first surface, which is the surface on which the external light is incident, of the laminate. Is preferably arranged.
Thereby, the aesthetic appearance of the timepiece dial can be further improved.
In the timepiece dial of the present invention, it is preferable that the transmittance of light incident from the normal direction of the laminate is 20 to 50%.
Thereby, it can use more suitably as a timepiece dial for solar timepieces.

The timepiece of the present invention includes the timepiece dial of the present invention.
Thereby, the timepiece having an excellent aesthetic appearance can be provided. In addition, a timepiece (for example, a solar timepiece, a solar radio timepiece, etc.) capable of effectively using light from the outside can be provided.
The decorative decorative board of the present invention is a decorative decorative board composed of a laminate having a plurality of transparent films,
The transparent film is composed of a resin material having optical transparency,
The laminate has 3 to 50 transparent films,
The laminated body has an air layer between the adjacent transparent films.
Thereby, while being excellent in the light transmittance, the decorative decorative board excellent in the aesthetic appearance can be provided.

  According to the present invention, it is possible to provide a timepiece dial and a decorative decorative plate that are excellent in light transmission and have an excellent aesthetic appearance, and to provide a timepiece including the timepiece dial. Can do.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings.
First, a preferred embodiment of the timepiece dial of the present invention will be described.
<Timepiece dial (first embodiment)>
FIG. 1 is a sectional view showing a first embodiment of a timepiece dial according to the present invention.
The timepiece dial 1 </ b> A of the present embodiment is composed of a laminate 2 </ b> A in which 3 to 50 transparent films 11 made of a light-transmitting resin material are laminated with an air layer 12 interposed therebetween. In the following description, it is assumed that the upper side in the figure is used as the side on which light enters, that is, the observer side. Further, in the laminate 2A constituting the timepiece dial 1A, the surface on which light is incident will be described as the first surface 16, and the surface opposite to the first surface will be described as the second surface 17. The same applies to FIGS. 2, 3, 4, and 5 described later. Further, unless otherwise specified, the refractive index in the present invention refers to an absolute refractive index measured using a Na-D lamp (light source wavelength: 589.3 nm) at a measurement temperature of 20 ° C.

  Since the timepiece dial 1 </ b> A is composed of a plurality of transparent films 11 having optical transparency, light incident from the outer surface side can be suitably transmitted. Further, in the laminate 2A, both surfaces of the transparent film 11 are in contact with the air existing around the air layer 12 or the timepiece dial 1A. For this reason, due to the difference in refractive index between the resin material constituting the transparent film 11 and air, the light incident from the first surface side is transmitted to the second surface side on both surfaces of the transparent film 11. A part of the incident light is reflected to the first surface side. Thereby, for example, in a timepiece having a solar cell on the second surface side of the timepiece dial 1A, it is possible to suitably prevent the solar cell from conspicuous from the outer surface side. Further, the timepiece dial 1A has a configuration in which the transparent films 11 and the air layers 12 are alternately laminated, and the light reflected by both surfaces of the plurality of transparent films 11 overlaps, and is like pearly luster. It can have an excellent aesthetic appearance.

  Moreover, the number of lamination | stacking of the transparent film 11 in 1A of timepiece dials is 3-50. As a result, the timepiece dial 1A has sufficient light transmissivity and an excellent aesthetic appearance such as pearl luster. Further, for example, when used as a solar timepiece dial, the presence of a solar cell installed under the timepiece dial 1A can be made sufficiently inconspicuous.

On the other hand, when the number of laminated transparent films in the timepiece dial is less than the lower limit of the above range, the timepiece dial has sufficient light transmittance. As a result of the number of reflection phenomena occurring on the surface being reduced compared to the timepiece dial 1A, it is impossible to obtain an aesthetic appearance such as pearl luster. In addition, when such a timepiece dial is used as a solar timepiece dial, the solar cell becomes conspicuous and a sufficiently satisfactory aesthetic appearance cannot be obtained. On the other hand, when the number of laminated transparent films is larger than the upper limit of the above range, the number of surfaces that reflect the light incident from the outer surface increases, and as a result, the light transmitted through the timepiece dial to the second surface. The amount of will decrease. For this reason, it is difficult to suitably use such a timepiece dial as a dial for a solar timepiece.
As described above, the number of laminated transparent films 11 in the timepiece dial 1A is 3 to 50, preferably 10 to 20, and more preferably 15 to 18. Thereby, the effect as described above becomes more remarkable.

[Transparent film]
As described above, the laminated body 2A constituting the timepiece dial 1A has a plurality of transparent films 11 made of a resin material having optical transparency.
Such a transparent film 11 preferably has a transmittance of 94% or more for visible light (wavelength: 380 to 780 nm) incident perpendicularly to the transparent film 11. As a result, the light transmittance of the timepiece dial 1A can be further improved. Further, for example, in a timepiece having a solar cell on the second surface side of the timepiece dial 1A, the solar cell can be irradiated with a sufficient amount of light, and practically used as a solar timepiece or a solar radio timepiece. Sufficient electromotive force can be generated.

The refractive index _{n 11} of the resin material forming the transparent film 11 is generally in the range of 1.4 to 1.6. Since the reflectance varies depending on the refractive index, the optimum number of sheets that can ensure the transmittance can be determined as appropriate. Thereby, since both surfaces of the transparent film 11 can suitably reflect and transmit incident light, the aesthetic appearance of the timepiece dial 1 </ b> A is particularly excellent while making the light transmittance sufficiently high. can do. Moreover, when the resin material which comprises the transparent film 11 satisfy | fills the said conditions, even if the number of lamination | stacking is comparatively small, the aesthetic appearance of 1 A of timepiece dials shall be fully excellent. it can. This can be explained as follows. In general, when light is incident on a substance having a high refractive index (for example, a resin material) from a substance having a low refractive index (for example, air), a predetermined angle (hereinafter referred to as a critical angle) from the perpendicular direction of the interface between these substances. Light that is incident at a larger angle than the light is totally reflected at the interface. Such a critical angle becomes smaller as the difference in refractive index between adjacent substances becomes larger (the component of light totally reflected in the light incident on the interface increases). Therefore, among the resin materials as described above, when a PC having a high refractive index is used as a constituent material of the transparent film 11, the critical angle becomes small and the incident light per transparent film is reflected. The efficiency to do can be made higher. Therefore, even if the number of laminated transparent films 11 is relatively small, it is considered that light incident on the timepiece dial 1A can be reflected more favorably to the first surface side. If the number of stacked layers 2A constituting the timepiece dial 1A can be reduced, the manufacturing process of the timepiece dial 1A can be simplified and the yield can be improved.

  Moreover, it is preferable that the average thickness per sheet of the transparent film 11 is 2 to 150 μm. If a thin film is used, even if the number of layers is increased, the total thickness will not increase, and a smart watch can be made. If the reflectance of each film surface is high and the number of layers need not be large, compare It can be optimized in the conflicting characteristics that it can be made with a thick film. When the average thickness of the transparent film 11 is a value within the above range, the aesthetic appearance can be made particularly excellent while sufficiently increasing the light transmittance of the timepiece dial 1A as a whole. Moreover, since the strength of the laminate 2A can be increased, the durability of the timepiece dial 1A can be further improved.

  Examples of the material constituting the transparent film 11 include polymethyl methacrylate (PMMA), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS resin), polyethylene terephthalate (PET), polystyrene (PS), Polypropylene (PP) or the like, or copolymers, blends, polymer alloys, etc. mainly composed of these, may be mentioned, and one or more of these may be combined (for example, as a blend resin, polymer alloy, etc.) Can be used.

Among these, it is preferable that the constituent material of the transparent film 11 is polymethylmethacrylate (PMMA). PMMA is a material that is particularly excellent in light transmittance among the materials described above. For this reason, the timepiece dial 1A provided with the transparent film 11 made of PMMA is particularly excellent in light transmittance. PMMA is relatively inexpensive among various plastic materials, and can contribute to further reduction in the production cost of the timepiece dial 1A.
The transparent film 11 may include components other than the materials listed above. Examples of such components include plasticizers, antioxidants, brighteners, fillers, and the like.

Further, the shape and size of the transparent film 11 are not particularly limited, and are usually determined based on the shape and size of the timepiece dial 1A.
The transparent film 11 may be formed by any method, and examples of the method for forming the transparent film 11 include roll stretch molding, coating molding, and spin cast molding.

[Air layer]
An air layer 12 is provided between adjacent transparent films 11 in the laminate 2A constituting the timepiece dial 1A. As described above, in the timepiece dial 1A, the transparent film 11 and the air layer 12 are alternately laminated, so that transmission and reflection phenomena on both surfaces of the transparent film 11 occur favorably. Both light transmittance and aesthetic appearance are excellent.
The average thickness of the air layer 12 is preferably 2 to 50 μm. The air layer is desired to be larger than the wavelength of light, thin and stable.

  The air layer 12 is preferably provided by the presence of the spacer 13 between the adjacent transparent films 11. Thereby, the air layer 12 can be reliably provided between the adjacent transparent films 11. Thereby, since both surfaces of the transparent film 11 are surely in contact with air, the incident light can be suitably transmitted and reflected on both surfaces of each transparent film 11 in the laminate 2A. The light transmission and aesthetic appearance of the timepiece dial 1A are particularly excellent.

  Further, a plurality of spacers 13 are arranged in each air layer 12, and the average pitch of the spacers 13 is 50 to 2000 μm. By satisfying the above conditions, the transparent film 11 in the laminate 2A can be suitably prevented from being bent, and the thickness of the air layer 12 can be made more uniform as a whole layer (of the transparent film 11 The thickness is uniform throughout the layer.) As a result, the transmission and reflection phenomena occurring on both surfaces of each transparent film 11 become more suitable, and the aesthetic appearance of the timepiece dial 1A is further improved while sufficiently satisfying the light transmittance. . In particular, when the timepiece dial 1A is viewed from the observer side, it has an excellent aesthetic appearance with no gloss unevenness when viewed from any direction. This can be explained as follows. In general, when light incident on a surface is reflected by the surface, the angle formed by the normal direction of the surface and the incident light is the same as the angle formed by the normal direction of the surface and the reflected light. . Therefore, in the timepiece dial 1A provided with the air layer 12 that satisfies the above conditions, when light incident from the outer surface side is reflected on both surfaces of the transparent films 11 in the laminate 2A, the light is incident in all directions. It is considered that the above effect can be obtained. On the other hand, when the average pitch of the spacers 13 is smaller than the lower limit value of the above range, the plurality of spacers 13 arranged in each air layer 12 are in an overcrowded state, and the light transmission of the timepiece dial 1A is reduced. It can get worse. Moreover, when the average pitch of the plurality of spacers 13 arranged in the air layer 12 is larger than the upper limit of the above range, the transparent film 11 in the laminate 2A is likely to bend, and each of the laminates 2A in the laminate 2A It becomes difficult to uniformly reflect light incident on both surfaces of the transparent film 11 in all directions. Thereby, depending on the viewing direction, the dial 1A for watches has uneven gloss, which may impair the aesthetic appearance. Furthermore, if the transparent film 11 in the laminate 2A is bent, peeling between adjacent transparent films 11 is likely to occur, and the strength of the laminate 2A may be reduced.

  The form of the spacer 13 is not particularly limited and may be any form, and examples thereof include a spherical shape, an elliptical spherical shape, a cylindrical shape, a rectangular parallelepiped shape, and a rectangular parallelepiped shape. Among these, in the case of a spherical shape, the spacer 13 is more reliably prevented from overlapping in the thickness direction of the stacked body 2A. Thereby, the thickness of the air layer 12 becomes more uniform as a whole layer, and the aesthetic appearance of the timepiece dial 1A becomes particularly excellent. Furthermore, when the laminated body 2A constituting the timepiece dial 1A is viewed in plan, the area occupied by the plurality of spacers 13 relative to the area of the transparent film 11 is compared to the case where spacers of other shapes are used. Can be small. As a result, the presence of the spacer 13 becomes inconspicuous, and the aesthetic appearance of the timepiece dial 1A is further improved.

  The material constituting the spacer 13 is not particularly limited, but various plastic materials such as various glass beads, thermoplastic resins and thermosetting resins, silica, alumina, titanium oxide, hydrous magnesium silicate, hydrous aluminum silicate. Various ceramic materials such as hydrous metal silicates such as, or various metal materials can be used. Among these materials, the spacer 13 is preferably made of glass beads. Thereby, in the laminated body 2A, the bonding property between the transparent film 11 and the spacer 13 can be made excellent, and as a result, the strength of the laminated body 2A becomes particularly excellent. Thereby, the durability of the timepiece dial 1A can be further improved. Further, since glass beads are a transparent material, even if the air layer 12 includes a spacer 13 mainly composed of glass beads, the aesthetic appearance such as the pearl luster of the timepiece dial 1A is deteriorated. Can be suitably prevented. Furthermore, it is possible to more suitably prevent the state of the second face side of the timepiece dial 1A from being seen through.

  Further, the timepiece dial 1A having the above-described configuration has a transmittance of 20 to 50 for visible light (wavelength: 380 to 780 nm) incident from the normal direction of the laminate constituting the timepiece dial 1A. % Is preferred. Thereby, for example, in a timepiece having a solar cell on the second surface side of the timepiece dial 1A, it is possible to irradiate the solar cell with a sufficient amount of light, which is practical as a solar timepiece or a solar radio timepiece. In addition, a sufficient electromotive force can be generated.

  Further, in the laminated body 2A constituting the timepiece dial 1A, the plurality of transparent films 11 included may be all made of the same resin material, or partly made of a different resin material. It may be a thing. Examples of the timepiece dial 1A constituted by using the transparent film 11 partially made of different resin materials include, for example, a transparent film 11 made of PC and a transparent film 11 made of ABS resin. , And the like, which are alternately stacked via the air layer 12.

  The manufacturing method of the timepiece dial 1A having the configuration as described above is not particularly limited. For example, when the transparent films 11 are laminated, the spacers as described above are provided on each transparent film 11. 1 A of timepiece dials can be manufactured by laminating | stacking a predetermined number of transparent films 11 while arranging, and apply | coating an adhesive agent to the peripheral part of the obtained laminated body. Further, after laminating a predetermined number of transparent films 11 by the above-described method, an adhesive is applied to a part of the peripheral portion of the obtained laminate, and further, a spacer 13 is formed from a portion where no adhesive is applied. By removing the, a timepiece dial 1A that does not include the spacer 13 in the laminate can be easily manufactured.

<Timepiece dial (second embodiment)>
Next, a second embodiment of the timepiece dial of the present invention will be described. In the following description, differences from the above-described embodiment (first embodiment) will be mainly described, and description of similar matters will be omitted.
FIG. 2 is a cross-sectional view showing a second embodiment of the timepiece dial of the present invention.
The timepiece dial 1B of the present embodiment has the same configuration as the timepiece dial 1A of the first embodiment, except that the laminated film 2B includes a colored film 14 containing a colorant.

  Such a colored film 14 has a function of transmitting incident light and a function of reflecting a part of the incident light as colored light (colored light) by a colorant. A clock dial 1B including such a colored film 14 as a film constituting the laminated body 2B in the laminated body in the same manner as the transparent film 11 described above, the transparent film 11 and the air layer 12 are alternately laminated. As a result, the color of the colored film 14 is added to the aesthetic appearance such as pearly luster that is developed. Thereby, the timepiece dial 1B can express a color tone that cannot be expressed by the timepiece dial 1A of the first embodiment, and has a particularly excellent aesthetic appearance. Moreover, the color of the timepiece dial 1B can be easily adjusted by changing the constituent material of the colored film 14 and the like.

Further, in the laminate 2B constituting the timepiece dial 1B, one or a plurality of transparent films 11 are laminated on the outer surface side of the colored film 14. Thereby, when the colored light reflected by the colored film 14 is reflected on the first surface side, the colored light is arranged on the first surface side of the colored film 14 and the transparent film 11. By transmitting the light, it becomes moist and glossy light, and the appearance of the timepiece dial 1B can be made more luxurious.
Moreover, it is preferable to correct | amend the number of lamination | stacking of the transparent film 11 in the laminated body 2B which comprises the dial 1B for timepieces by reducing the number of lamination | stacking by the part which the transmittance | permeability falls with a colored film. Thereby, while being excellent in light transmittance, the external appearance of the timepiece dial 1B can be further enhanced.

Examples of such a colorant constituting the colored film 14 include pigments and dyes.
Moreover, it is preferable that the colored film 14 contains a resin material as a constituent material. Thereby, the intensity | strength of the laminated body 2B which comprises the timepiece dial 1B can be made high, and the durability of the timepiece dial 1B can be made excellent as a result. As such a resin material, for example, as described above, a resin material constituting the transparent film 11, a urethane resin, or a copolymer, a blend, a polymer alloy, etc. mainly composed of these, can be cited. One or more of these can be used in combination (for example, as a blend resin, a polymer alloy, etc.).

  Further, the thickness of the colored film 14 is not particularly limited, but it is desired that the colored film 14 be thin and function in terms of configuration. When the thickness of the colored film 14 is a value within the above range, it is possible to transmit and reflect light more suitably on both surfaces of the colored film 14, and the dial for a watch is excellent in light transmittance. The decorativeness (aesthetic appearance) of which color tone is controlled in 1B can be made particularly excellent.

<Timepiece Dial (Third Embodiment)>
Next, a third embodiment of the timepiece dial of the present invention will be described. In the following description, differences from the above-described embodiments (first embodiment, second embodiment) will be mainly described, and description of similar matters will be omitted.
FIG. 3 is a sectional view showing a third embodiment of the timepiece dial of the present invention.
The timepiece dial 1C of the present embodiment has a diffusion film 15 having a function of diffusing incident light in the laminate 2C. Hereinafter, the diffusion film 15 will be described.

  Such a diffusion film 15 has a function of transmitting incident light and a function of scattering (diffusing) part of the incident light. A clock dial 1C including such a diffusion film 15 as a film constituting the laminated body 2C in the laminated body in the same manner as the transparent film 11 described above, the transparent film 11 and the air layer 12 are alternately laminated. As a result, light with high whiteness reflected (scattered) by the diffusion film 15 is added to an aesthetic appearance such as pearly luster that is expressed. As a result, the timepiece dial 1C can express a deep and luxurious gloss that cannot be expressed by the timepiece dial 1A and the timepiece dial 1B, and has a particularly excellent aesthetic appearance. It will be prepared.

  Further, in the laminate 2C constituting the timepiece dial 1C, one or more transparent films 11 are laminated on the outer surface side of the diffusion film 15. Thereby, when the light reflected (scattered) by the diffusion film 15 is reflected to the first surface side, the reflected light is the air layer 12 disposed on the first surface side of the diffusion film 15, and By passing through the transparent film 11, the light has a moist and glossy appearance, and the appearance of the timepiece dial 1C can be further enriched.

  Further, it is desirable to reduce the number of laminated transparent films 11 in the laminated body 2C constituting the timepiece dial 1C so as to correct the shortage of transmitted light amount reduced by the diffusion film. Thereby, while being excellent in light transmittance, the external appearance of the dial 1C for timepieces can be further enriched.

Such a diffusion film 15 is not limited as long as it has a function of diffusing incident light. For example, the diffusion film 15 includes a diffusing agent having a function of diffusing light, or has minute irregularities (surface roughness) on the surface of the film. A film having a surface roughness of the film surface measured using a thickness gauge (with a Ra value of 1 to 50 μm) can be suitably used.
Further, the diffusing agent as described above may be in any shape such as granular (powdered), scale-like, or needle-like, or may be indefinite. Examples of the constituent material of the diffusing agent include silica and glass.

Moreover, it is preferable that the diffusion film 15 contains a resin material as a constituent material. Thereby, the intensity | strength of 2 C of laminated bodies which comprise 1C of timepiece dials can be made high, As a result, durability of 1C of timepiece dials can be made excellent. As such a resin material, for example, as described above, a resin material constituting the transparent film 11, a urethane resin, or a copolymer, a blend, a polymer alloy, etc. mainly composed of these, can be cited. One or more of these can be used in combination (for example, as a blend resin, a polymer alloy, etc.).
Moreover, when the diffusion film 15 contains a diffusing agent as described above and a resin material, the blending amount of the diffusing agent is preferably 30% by weight or less with respect to the weight of the resin material. Thereby, while providing sufficient light transmittance, the aesthetic appearance of the dial 1C for timepieces can be further enriched.

The timepiece dial 1C further includes a colored film 14 in the laminate 2C. For this reason, the timepiece dial plate 1C overlaps with the color tone of the timepiece dial plate 1B and the deep and luxurious gloss as described above. It will be equipped with.
Further, the position where the colored film 14 and the diffusion film 15 are laminated in the laminated body 2C constituting the timepiece dial 1C is not particularly limited, but the colored film 14 is closer to the first surface than the diffusion film 15 is. The appearance of the timepiece dial 1 </ b> C arranged on the screen becomes clearer in the color of the reflected light emitted from the colored film 14. On the other hand, the appearance of the timepiece dial 1 </ b> C in which the diffusion film 15 is disposed on the first surface side than the colored film 14 is lighter in the color of reflected light emitted from the colored film 14. That is, in the timepiece dial 1 </ b> C, the color shade of the dial can be controlled by changing the stacking position of the colored film 14 and the diffusion film 15.
Moreover, although the laminated body which comprises 1C of timepiece dials was demonstrated as what contains both the colored film 14 and the diffusion film 15, the colored film 14 does not need to be.

<Timepiece Dial (Fourth Embodiment)>
Next, other embodiments of the timepiece dial of the present invention will be described. In the following description, differences from the above-described embodiments (the first embodiment, the second embodiment, and the third embodiment) will be mainly described, and description of similar matters will be omitted.
FIG. 4 is a cross-sectional view showing a fourth embodiment of the timepiece dial of the present invention.

In the timepiece dial 1D of the present embodiment, the colored film 14 described above is formed on the second surface 17 of the laminate 2A constituting the timepiece dial 1A described in the first embodiment via a spacer 13. It is arranged. The timepiece dial 1D having such a configuration has the same excellent aesthetic appearance and light transmittance as the timepiece dial 1B including the colored film 14 between the transparent films 11 in the laminate. . Further, since the colored film 14 constituting the timepiece dial 1D is disposed on the second surface 17 side of the laminate 2A, it can be easily removed. Therefore, for example, in a timepiece equipped with a timepiece dial 1D, a desired appearance can be easily obtained by removing the colored film 14, replacing the colored film containing a different colorant, or the diffusion film 15 as described above. It can be exchanged for a watch equipped with a dial, and is effective in producing a variety of watch dials.
Further, the timepiece dial of the present embodiment is not limited to the above configuration, and for example, the colored film 14 and the diffusion film 15 are provided on the second surface 17 side of the laminate 2A constituting the timepiece dial 1D. , Both may be provided.

In addition, the colored film 14 used in the timepiece dial of the present embodiment is obtained from the laminated body 2A by imparting adhesiveness and adhesiveness to the surface facing the second surface 17 of the laminated body 2A. 14 can be attached and detached more easily, which is more effective for producing a variety of timepiece dials.
In the timepiece dial 1 </ b> D of the present embodiment, the spacer 13 may not be interposed between the laminate and the colored film 14.

<Timepiece Dial (Fifth Embodiment)>
Next, other embodiments of the timepiece dial of the present invention will be described. In the following description, differences from the above-described embodiments (the first embodiment, the second embodiment, the third embodiment, and the fourth embodiment) will be mainly described, and the same matters will be described. Omitted.
FIG. 5 is a sectional view showing a fifth embodiment of the timepiece dial of the present invention.

  The timepiece dial 1E of the present embodiment has a diffusion film 15 disposed in place of the colored film 14 constituting the timepiece dial 1D. Such a timepiece dial 1E has an excellent aesthetic appearance similar to that of the timepiece dial including the diffusion film 15 in the laminate, and the diffusion film 15 can be easily attached and detached. . Therefore, for example, in a timepiece equipped with a timepiece dial 1E, it is possible to easily replace the timepiece with a dial with a desired appearance by removing the diffusion film 15 or replacing it with the colored film 14. It is effective for the production of a variety of timepiece dials.

In addition, the diffusion film 15 used in the timepiece dial of the present embodiment provides the diffusion film from the laminate 2A by imparting adhesiveness and adhesiveness to the surface facing the second surface 17 of the laminate 2A. 15 can be attached and detached more easily, which is more effective for producing a variety of timepiece dials.
In the timepiece dial 1 </ b> E of the present embodiment, the spacer 13 may not be interposed between the laminate and the diffusion film 15.

<Clock>
Next, the timepiece of the present invention provided with the timepiece dial of the present invention as described above will be described.
The timepiece of the present invention has the timepiece dial of the present invention as described above. As described above, the timepiece dial of the present invention is excellent in light transmittance and decorativeness (aesthetic appearance). For this reason, the timepiece of the present invention provided with such a timepiece dial can sufficiently satisfy the required requirements as a solar timepiece or a solar radio timepiece. In addition, as components other than the timepiece dial (the timepiece dial of the invention) constituting the timepiece of the invention, known parts can be used. Hereinafter, an example of the configuration of the timepiece of the invention will be described. Will be described.

FIG. 6 is a cross-sectional view showing a preferred embodiment of the timepiece (watch) of the present invention.
As shown in FIG. 6, a wristwatch (portable timepiece) 100 according to this embodiment includes a case (case) 72, a back cover 73, a bezel (edge) 74, and a glass plate (cover glass) 75. . Further, in the case 72, the timepiece dial 1 (1A, 1B, 1C, 1D, 1E) of the present invention as described above, the solar cell 88, and the movement 71 are accommodated. Contains needles (pointers) etc. that do not work. The timepiece dial 1 is arranged so that the first surface 16 faces the glass plate 75 side.

The glass plate 75 is usually made of transparent glass or sapphire having high transparency. Thereby, while being able to fully exhibit the aesthetics of the dial 1 as a timepiece dial of the present invention, a sufficient amount of light can be incident on the solar cell 88.
The movement 71 uses the electromotive force of the solar cell 88 to drive the pointer.
Although omitted in FIG. 2, in the movement 71, for example, an electric double layer capacitor for storing the electromotive force of the solar cell 88, a lithium ion secondary battery, a crystal oscillator as a time reference source, and a crystal vibration A semiconductor integrated circuit that generates a driving pulse that drives the clock based on the oscillation frequency of the child, a step motor that drives the wheel train mechanism every second in response to this driving pulse, and a movement of the step motor A train wheel mechanism for transmitting to the vehicle is provided.
The movement 71 includes a radio wave receiving antenna (not shown). And it has the function to perform time adjustment etc. using the received electromagnetic wave.

The solar cell 88 has a function of converting light energy into electric energy. The electric energy converted by the solar battery 88 is used for driving the movement.
In the solar cell 88, for example, a p-type impurity and an n-type impurity are selectively introduced into a non-single-crystal silicon thin film, and a p-type non-single-crystal silicon thin film and an n-type non-single-crystal silicon thin film are used. It has a pin structure provided with an i-type non-single-crystal silicon thin film with a low impurity concentration in between.

A winding stem pipe 76 is fitted and fixed to the barrel 72, and a shaft 771 of a crown 77 is rotatably inserted into the winding stem pipe 76.
The body 72 and the bezel 74 are fixed by a plastic packing 78, and the bezel 74 and the glass plate 75 are fixed by a plastic packing 79.
Further, a back cover 73 is fitted (or screwed) to the barrel 72, and a ring-shaped rubber packing (back cover packing) 84 is inserted into the joint portion (seal portion) 85 in a compressed state. Has been. With this configuration, the seal portion 85 is sealed in a liquid-tight manner, and a waterproof function is obtained.

  A groove 772 is formed in the outer periphery of the shaft 771 of the crown 77, and a ring-shaped rubber packing (crown packing) 83 is fitted in the groove 772. The rubber packing 83 is in close contact with the inner peripheral surface of the winding stem pipe 76 and is compressed between the inner peripheral surface and the inner surface of the groove 772. With this configuration, the space between the crown 77 and the winding stem pipe 76 is liquid-tightly sealed, and a waterproof function is obtained. When the crown 77 is rotated, the rubber packing 83 rotates together with the shaft portion 771 and slides in the circumferential direction while being in close contact with the inner peripheral surface of the winding stem pipe 76.

In the above description, a wristwatch (portable clock) is described as an example of a clock, but the present invention is similarly applied to other types of clocks such as a portable clock, a table clock, and a wall clock other than the wristwatch. be able to.
In the above description, the dial to which the timepiece dial of the present invention is applied is used as the dial. However, the timepiece dial of the present invention is not used for parts other than the dial (timepiece dial). May be applied. For example, the case (case), hands, etc. constituting the timepiece may be constituted by the timepiece dial of the present invention. Further, a plurality of parts (timepiece dial) constituting the timepiece may be constituted by the timepiece dial of the present invention.

  In addition, as described above, the timepiece dial 1 (1A, 1B, 1C, 1D, 1E) has an excellent aesthetic appearance and has an excellent light transmittance. The decorative plate is not limited to be used as a timepiece dial, and can be used as various decorative decorative plates other than the timepiece dial. For example, a decorative decorative plate having the same configuration as that of the timepiece dial 1 is arranged on a solar cell (on a light receiving surface of the solar cell) for various electronic devices such as a mobile phone or an electronic computer driven by the solar cell. By doing so, it is possible to reliably prevent the solar cell from being seen through from the outer surface side of various electronic devices, and to enhance the decorativeness of these electronic devices. In addition, since such decorative decorative boards have an excellent aesthetic appearance (decorativeness), for example, interiors such as figurines, exterior goods, jewelry, watch cases (torso, back cover, trunk and back) One-piece case integrated with a lid, etc.), watch band (including band clasp, band / bangle attaching / detaching mechanism, etc.), watch hand, bezel (for example, rotating bezel), crown (for example, screw lock type crown) Etc.), buttons, cover glasses, glass edges, dial rings, parting plates, packing parts such as clocks, movement ground plates, gears, train wheel supports, rotating weights and other watch interior parts, glasses (for example, glasses) Frame), tie pins, cufflinks, rings, necklaces, bracelets, anklets, brooches, pendants, earrings, earrings and other accessories, lighters or Can of cases, automobile wheel, sporting goods such as golf club, nameplate, panel, Shohai, various other equipment parts, including housing, etc., be applied to various types of containers and the like.

In the above description, the timepiece dial 1 (1A, 1B, 1C, 1D, 1E) has been described, but the present invention is not limited thereto.
For example, the peripheral surface portion of the laminate constituting the timepiece dial may be covered with a resin material. As a result, the peeling phenomenon that occurs between adjacent transparent films, colored films, and diffusion films in the laminate can be effectively prevented over a long period of time, and the durability and reliability of the timepiece dial Is even better. In addition, since the peripheral surface portion of the laminate is covered with a resin material, it is possible to reliably prevent dust and the like from being mixed into each layer, and the watch dial is excellent over a long period of time. Aesthetic appearance can be maintained.

Moreover, when the timepiece dial includes a spacer in each air layer, a plurality of such spacers may be included in each air layer, or only one may be included. For example, the above-described effects can be obtained even when a ring-shaped member that matches the size of the outer periphery of the timepiece dial is included in each air layer as a spacer.
Further, in the laminate constituting the timepiece dial, it is only necessary to have an air layer between at least adjacent transparent films, for example, between the transparent film and the colored film, between the transparent film and the diffusion film, Further, an air layer may not be provided between the colored film and the diffusion film.
In addition, the colored film and the diffusion film included in the timepiece dial of each embodiment as described above may be one sheet or a plurality of sheets.

  The timepiece dial of the present invention may have a coat layer (protective film) made of a light-transmitting material on the outermost surface side of the laminate constituting the timepiece dial. . By having such a coat layer (protective film), for example, it is possible to adjust glossiness, color tone, etc. while making the light transmittance sufficiently high, and to further improve the aesthetic appearance of the timepiece dial. Can be. Further, by having such a coat layer (protective film), for example, the watch dial as a whole, such as corrosion resistance, weather resistance, water resistance, oil resistance, scratch resistance, abrasion resistance, discoloration resistance, etc. Various characteristics can be improved, and deterioration or modification of the transparent film due to the influence of the external environment can be more reliably prevented. As a result, the durability as a timepiece dial can be made particularly excellent.

In the timepiece dial 1B of the second embodiment and the timepiece dial 1C of the third embodiment described above, the colored film 14 or the diffusion film 15 is included between the transparent films 11 in the laminate. Although demonstrated, what was distribute | arranged to the outermost surface as a film which comprises a laminated body may be used.
In addition, each timepiece dial described in each embodiment has, for example, at least one layer between the transparent film and the colored film, between the transparent film and the diffusion film, or between the colored film and the diffusion film. There may be an intermediate layer.

Next, specific examples of the present invention will be described.
1. Manufacture of timepiece dial (Example 1)
A timepiece dial was manufactured by the following method.
First, a polymethylmethacrylate (PMMA) film (manufactured by Mitsubishi Rayon Co., Ltd., trade name “Acryprene HBS006”, film thickness 25 μm) is cut and polished in a necessary portion so as to be in the shape of a wristwatch exterior part (dial plate). A transparent film was used. The transparent film thus obtained was substantially disk-shaped and had a diameter of about 27 mm.

Next, on the PMMA film obtained as described above, the classified glass beads (trade name “Unibeads SPM16”, average particle size: 16 microns, manufactured by Union Co., Ltd.): 43 mg are evenly dispersed. Further, a PMMA film was placed thereon. As described above, the same amount of the above glass beads were uniformly dispersed on the PMMA film, and the operation of placing the PMMA film was repeated to prepare a laminate in which 14 PMMA films were laminated. The average particle diameter of the glass beads scattered on each PMMA film was 16 μm, and the pitch was observed with an optical microscope, and was about 300 μm.
Next, an acrylic adhesive was applied to the outer peripheral edge of the laminate thus obtained to obtain a timepiece dial.

(Examples 2 and 3)
When laminating the PMMA film, the amount of glass beads scattered on the PMMA film and the number of PMMA films to be used are changed, and the average pitch of the spacers and the number of laminated PC films are as shown in Table 1. A timepiece dial was manufactured in the same manner as in Example 1 except that.

Example 4
On the PMMA film used in Example 1, 43 mg of glass beads similarly used in Example 1 were evenly dispersed, and a PMMA film was further placed thereon. As described above, the same amount of the above glass beads were uniformly spread on the PMMA film, and the operation of placing the PMMA film was repeated to obtain a laminate in which ten PMMA films were laminated.

  Next, glass beads are similarly sprinkled on the 10th laminated PMMA film, and then a colored film (average thickness: 35 μm) composed of a colorant and a urethane-based adhesive (urethane-based resin). ). Then, five PMMA films were laminated | stacked on the coloring film using the same method, the acrylic adhesive was apply | coated to the outer periphery part of the obtained laminated body, and the dial for timepieces was obtained.

(Example 5)
On the PMMA film used in Example 1, 43 mg of glass beads similarly used in Example 1 were evenly dispersed, and a PMMA film was further placed thereon. As described above, the same amount of the above glass beads were uniformly dispersed on the PMMA film, and the operation of placing the PMMA film was repeated, thereby obtaining a laminate in which nine PMMA films were laminated.

  Next, glass beads are similarly sprinkled on the ninth PMMA film, and then a diffusion film (average thickness: 30 μm) composed of a diffusion agent and a urethane-based adhesive (urethane-based resin). ). Then, one PMMA film was laminated | stacked on the diffusion film using the same method, and also one colored film and then five PMMA films were laminated | stacked similarly. An acrylic adhesive was applied to the outer peripheral edge of the laminate thus obtained to obtain a timepiece dial.

(Example 6)
A watch character as in Example 1 except that a polycarbonate (PC) film (manufactured by Mitsubishi Engineering Plastics, trade name “Iupilon”, film thickness 100 μm) was used instead of the PMMA film used in Example 1. A board was produced.

(Comparative Example 1)
A timepiece dial was manufactured in the same manner as in Example 2 except that the number of laminated PMMA films was as shown in Table 1.
(Comparative Example 2)
When laminating the PMMA film, the amount of glass beads scattered on the PMMA film and the number of PMMA films to be used are changed, and the average pitch of the spacers and the number of laminated PMMA films are as shown in Table 1. A timepiece dial was manufactured in the same manner as in Example 1 except that.

(Comparative Example 3)
Pellet-like polycarbonate was formed into a film by compression molding, and necessary portions were cut and polished so as to be in the shape of a wristwatch exterior part (dial plate) to obtain a transparent film. The PC film thus obtained was substantially disc-shaped and had a diameter: about 27 mm × thickness: about 500 μm.
Next, the colored film used in Example 4 was bonded to the second surface of the PC film to obtain a timepiece dial.

(Comparative Example 4)
Pellet-like polycarbonate: 100 parts by weight and silica (average particle size: 3.0 μm): 13 parts by weight were melt-kneaded to sufficiently disperse silicon oxide in the polycarbonate. The melt-kneaded material thus obtained was formed into a film by compression molding, and necessary portions were cut and polished so as to be in the shape of a wristwatch exterior part (dial plate) to form a film. The film thus obtained was substantially disc-shaped and had a diameter of about 27 mm × thickness: about 500 μm.

(Comparative Example 5)
Pellet-like polycarbonate: 100 parts by weight and silica (average particle size: 3.0 μm): 35 parts by weight were melt-kneaded to sufficiently disperse silicon oxide in the polycarbonate. The melt-kneaded material thus obtained was formed into a film by compression molding, and necessary portions were cut and polished so as to be in the shape of a wristwatch exterior part (dial plate) to form a film. The film thus obtained was substantially disc-shaped and had a diameter of about 27 mm × thickness: about 500 μm.
Table 1 summarizes the configuration of the timepiece dial of each example and each comparative example. In Table 1, polymethyl methacrylate PMMA, polycarbonate PC, tetrafluoroethylene - respectively showing hexafluoropropylene copolymer FEP, silica in SiO _2.

2. Appearance Evaluation of Timepiece Dial For each timepiece dial produced in each of the above examples and comparative examples, the outer surface side (first surface) when used as a timepiece dial having a solar cell on the second surface side. 1), visual observation was performed, and the appearance was evaluated according to the following six-stage criteria.
A: Excellent appearance.
A: Excellent appearance.
○: Good appearance.
Δ: Appearance is slightly poor.
X: Appearance is poor.
Xx: The appearance is extremely poor.

3. Evaluation of light transmittance of timepiece dial The light transmittance of each timepiece dial manufactured in each of the above Examples and Comparative Examples was evaluated by the following method.
First, the solar cell and each clock dial were placed in a dark room. Thereafter, light from a fluorescent lamp (light source) separated by a predetermined distance was made incident on the light receiving surface of the solar cell alone. At this time, the power generation current of the solar cell was A [mA]. Next, a fluorescent lamp (light source) spaced a predetermined distance in the same manner as described above in a state where a timepiece dial is superimposed on the upper surface of the light receiving surface of the solar cell so that the second surface faces the solar cell. The light from was incident. In this state, the generated current of the solar cell was B [mA]. Then, the light transmittance of the timepiece dial represented by (B / A) × 100 was calculated and evaluated according to the following four criteria. It can be said that the larger the light transmittance, the better the light transmittance of the timepiece dial. The timepiece dial was overlapped so that the surface of the base material on which the metal compound was formed faced the fluorescent lamp (light source) side.
A: 30% or more.
○: 25% or more and less than 30%.
Δ: 21% or more and less than 25%.
X: Less than 21%.

Thereafter, a wristwatch as shown in FIG. 6 was manufactured using the timepiece dial manufactured in each of the above Examples and Comparative Examples. Then, each manufactured wristwatch was put in a dark room. Thereafter, light from a fluorescent lamp (light source) spaced a predetermined distance was made incident from a surface on the dial side (surface on the glass plate) of the watch. At this time, the irradiation intensity was changed at a constant speed so that the irradiation intensity of light gradually increased. As a result, the movement of all the timepieces of the present invention and the timepieces of the comparative examples were driven even when the irradiation intensity was relatively small.
These results are shown in Table 2.

As is clear from Table 2, the timepiece dial of the present invention had an excellent aesthetic appearance such as pearl luster and was excellent in light transmittance.
Moreover, when the colored film used in Example 4 was pasted on the second surface of each timepiece dial to each timepiece dial of Examples 1 to 3, the timepiece dial of Example 4 was obtained. Thus, a timepiece dial having an aesthetic appearance as possessed by can be obtained. Similarly, after attaching the diffusion film used in Example 5 to the second surface of each timepiece dial for each timepiece dial of Examples 1 to 3, Further, when the colored film was laminated, a timepiece dial having an aesthetic appearance as possessed by the timepiece dial of Example 5 could be obtained.
On the other hand, in the comparative example, a satisfactory result was not obtained. In other words, the timepiece dials of these comparative examples could not simultaneously achieve both excellent light transmittance and excellent aesthetic appearance.

Moreover, the timepiece as shown in FIG. 5 was assembled using the dials (clockpiece dials) obtained in the respective examples and comparative examples. Each timepiece thus obtained was tested and evaluated in the same manner as described above, and the same results as described above were obtained.
Furthermore, the timepiece dial plate manufactured in each of the examples and the comparative examples is arranged on the outer surface side (side on which light is incident) of the wristwatch internal module (movement) provided with the antenna for receiving radio waves, and in this state The radio wave reception sensitivity of the watch internal module (movement) was evaluated. As a result, those using the timepiece dial obtained in each example were also excellent in electromagnetic wave permeability.

It is sectional drawing which shows 1st Embodiment of the dial for timepieces of this invention. It is sectional drawing which shows 2nd Embodiment of the dial for timepieces of this invention. It is sectional drawing which shows 3rd Embodiment of the timepiece dial of this invention. It is sectional drawing which shows 4th Embodiment of the timepiece dial of this invention. It is sectional drawing which shows 5th Embodiment of the dial for timepieces of this invention. It is a fragmentary sectional view which shows suitable embodiment of the timepiece (portable timepiece) of this invention.

Explanation of symbols

  1 (1A, 1B, 1C, 1D, 1E) ... Timepiece dial 2 (2A, 2B, 2C) ... Laminate 11 ... Transparent film 12 ... Air layer 13 ... Spacer 14 ... Colored film 15 ... Diffusion film 16 ... First 1 surface 17 ... second surface 71 ... movement 72 ... body (case) 73 ... back cover 74 ... bezel (edge) 75 ... glass plate (cover glass) 76 ... winding stem pipe 77 ... crown 771 ... shaft portion 772 ... Groove 78 ... Plastic packing 79 ... Plastic packing 83 ... Rubber packing (Crown packing) 84 ... Rubber packing (back cover packing) 85 ... Junction (seal part) 88 ... Solar cell 100 ... Watch (portable watch)

Claims (16)

A watch dial composed of a laminate having a plurality of transparent films,
The transparent film is composed of a resin material having optical transparency,
The laminate has 3 to 50 transparent films,
A timepiece dial having an air layer between adjacent transparent films in the laminate.   The timepiece dial according to claim 1, wherein an absolute refractive index of the resin material constituting the transparent film is 1.4 to 1.6.   The timepiece dial according to claim 1, wherein the transparent film has an average thickness of 2 to 150 μm.   The timepiece dial according to any one of claims 1 to 3, wherein the transparent film is made of a material containing polymethyl methacrylate.   5. The timepiece dial according to claim 1, wherein the air layer is provided by a spacer disposed between the transparent films adjacent to each other in the laminated body.   The timepiece dial according to claim 1, wherein the air layer has an average thickness of 2 to 50 μm. A plurality of the spacers are arranged in one air layer,
The timepiece dial according to claim 1, wherein the spacer has an average pitch of 50 to 2000 μm.   The timepiece dial according to any one of claims 1 to 7, wherein the spacer has a spherical shape.   The timepiece dial according to any one of claims 1 to 8, wherein the spacer is mainly composed of hydrous aluminum silicate.   The timepiece dial according to any one of claims 1 to 9, wherein a colored film made of a material containing a colorant is included between the transparent films constituting the laminate.   The colored film comprised with the material containing a coloring agent is arrange | positioned at the 2nd surface side opposite to the 1st surface which is a surface where the external light injects of the said laminated body. The timepiece dial according to any one of 10.   The timepiece dial according to any one of claims 1 to 11, comprising a diffusion film having a function of diffusing incident light between the transparent films constituting the laminate.   The diffusion film which has the function to diffuse the incident light is arrange | positioned by the 2nd surface side opposite to the 1st surface which is a surface where the external light injects in the said laminated body. The timepiece dial according to any one of 12 above.   The timepiece dial according to any one of claims 1 to 13, wherein a transmittance of light incident from a normal direction of the laminated body is 20 to 50%.   A timepiece comprising the timepiece dial according to claim 1. A decorative decorative board composed of a laminate having a plurality of transparent films,
The transparent film is composed of a resin material having optical transparency,
The laminate has 3 to 50 transparent films,
A decorative decorative board comprising an air layer between adjacent transparent films in the laminate.

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