JP2008122162A - Timepiece dial and timepiece - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a timepiece dial and a timepiece which are excellent in esthetic appearance and change their appearances in response to a motion and the like. <P>SOLUTION: The timepiece dial 1A comprises: a hollow panel 2 made up of a material being optically transparent; and a liquid layer 3 composed of two or more liquids which are optically transparent and enclosed in a hollow part 23 of the hollow panel 2, have different specific gravities and do not mix with each other. The two or more liquids are preferably different from another in color tone. Furthermore, a partition wall section 24 is preferably disposed in a prescribed pattern so as to project in the thickness direction in the hollow part 23 of the hollow panel 2. Moreover, the absolute value of a difference between refractive indices of materials making up the partition wall section 24 and the hollow panel 2 is preferably 0.10 or less. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a timepiece dial and a timepiece.

Timepieces and timepiece dials are required to have a function as a practical product and a decorative property (aesthetic appearance) as a decorative product.
Conventionally, a timepiece dial has generally been made of a metal material in order to obtain a high-quality appearance. There is also an attempt to use a dial plate made of an alloy having a complicated composition in order to obtain an appearance that is difficult to express with pure materials such as pure gold and pure silver (for example, see Patent Document 1).
On the other hand, there is a need for a timepiece and a timepiece dial whose appearance can be remarkably changed according to a user's movement or the like that could not be expressed with a metal material.

JP 2006-249510 A

  An object of the present invention is to provide a timepiece dial and a timepiece that are excellent in aesthetic appearance and whose appearance changes remarkably according to movement or the like.

Such an object is achieved by the present invention described below.
A timepiece dial of the present invention, a hollow substrate made of a light-transmitting material,
And a liquid layer made of a plurality of liquids which are sealed in a hollow portion of the hollow substrate and have light transmittance and are not melted together.
As a result, it is possible to provide a timepiece dial that is excellent in aesthetic appearance and whose appearance changes remarkably according to movement and the like.

In the timepiece dial according to the aspect of the invention, it is preferable that the plurality of liquids have different specific gravities.
Thereby, the change of the external appearance according to movement etc. becomes more remarkable, the especially outstanding visual effect is acquired, and the aesthetic appearance becomes especially excellent.
In the timepiece dial of the present invention, it is preferable that partition portions protruding in the thickness direction are provided in a predetermined pattern in the hollow portion of the hollow substrate.
As a result, it is possible to adjust the movement of the liquid so that the movement of the liquid having a small specific gravity is not excessively biased near the end of the timepiece dial (hollow substrate), and the aesthetic appearance of the timepiece dial Can be made particularly excellent.

In the timepiece dial of the present invention, the absolute value of the difference between the refractive index of the constituent material of the partition wall and the refractive index of the constituent material of the hollow substrate is preferably 0.10 or less.
Thereby, when the timepiece dial is viewed from the main surface direction (normal direction of the main surface) of the timepiece dial, the partition wall portion can be made less conspicuous, and the timepiece dial can be decorated. The property (aesthetic appearance) can be made particularly excellent.

In the timepiece dial according to the aspect of the invention, it is preferable that the first surface which is one main surface of the hollow substrate is a convex curved surface.
Thereby, it is possible to easily collect a liquid having a small specific gravity among the plurality of liquids sealed in the hollow portion of the hollow substrate in the vicinity of the central portion in the main surface direction of the timepiece dial (hollow substrate). As a result, each liquid can be arranged in a unique pattern, and a particularly excellent appearance can be obtained. The timepiece dial can also have a function as a level.

In the timepiece dial according to the aspect of the invention, it is preferable that the second surface of the hollow substrate facing the first surface is a curved surface, and the curved surface is an equidistant curved surface with respect to the first surface. .
As a result, among the plurality of liquids sealed in the hollow portion of the hollow substrate, the liquid having a small specific gravity is particularly likely to gather near the central portion in the main surface direction of the timepiece dial (hollow substrate). it can. Further, since the amount of liquid sealed in the hollow portion of the hollow substrate can be reduced, it is advantageous from the viewpoint of resource saving. Further, in a timepiece equipped with the timepiece dial, the space for housing a member such as a movement can be secured on the lower surface (second surface) side of the timepiece dial. Is also advantageous.

In the timepiece dial according to the aspect of the invention, it is preferable that the plurality of liquids have different colors.
As a result, it is possible to more effectively express the dynamic beauty whose appearance changes remarkably according to the movement, etc., and the decorativeness (aesthetic appearance) of the timepiece dial is particularly excellent. be able to.

In the timepiece dial of the present invention, it is preferable that the periphery of the hollow substrate is covered with a cover member made of a light-impermeable material.
This makes it possible to alleviate extreme color deviation in the visible area of the main surface of the timepiece dial (hollow substrate), and to particularly improve the decorativeness (aesthetic appearance) of the timepiece dial It can be.

In the timepiece dial of the present invention, it is preferable that the hollow substrate has a liquid repellent treatment on the inner surface thereof.
Thereby, it can prevent that a hollow substrate is colored with the liquid enclosed in the hollow substrate. As a result, the aesthetic appearance of the timepiece dial can be stably improved over a long period of time.

In the timepiece dial of the present invention, it is preferable that an air layer is provided in the hollow portion of the hollow substrate together with the liquid layer.
Thereby, the change of the external appearance according to movement etc. becomes more remarkable, the especially outstanding visual effect is acquired, and the aesthetic appearance becomes especially excellent.
The timepiece dial of the present invention is preferably a wristwatch dial.
The wristwatch dial has a strong movement during use, particularly among various clock dials. For this reason, the change in the appearance of the timepiece dial due to the above movement appears more remarkably, and the effect of the present invention is more remarkably exhibited.

The timepiece of the present invention includes the timepiece dial of the present invention.
Accordingly, it is possible to provide a timepiece that has an excellent aesthetic appearance and whose appearance changes remarkably according to movement and the like.
The timepiece of the present invention includes a hollow substrate made of a light-transmitting material,
And a liquid layer made of a plurality of liquids which are sealed in a hollow portion of the hollow substrate and have light transmittance and are not melted together.
Accordingly, it is possible to provide a timepiece that has an excellent aesthetic appearance and whose appearance changes remarkably according to movement and the like.

In the timepiece of the present invention, it is preferable that the vicinity of the outer peripheral portion of the hollow substrate is covered with a cover member made of a light-impermeable material.
Thereby, in the area | region where the main surface of a hollow substrate is visually recognized, the extreme deviation of a color etc. can be relieve | moderated and the decorativeness (aesthetic appearance) of a timepiece can be made especially excellent.
In the timepiece of the invention, it is preferable that an air layer is provided in the hollow portion of the hollow substrate together with the liquid layer.
Thereby, the change of the external appearance according to movement etc. becomes more remarkable, the especially outstanding visual effect is acquired, and the aesthetic appearance becomes especially excellent.

  ADVANTAGE OF THE INVENTION According to this invention, while being excellent in the aesthetic appearance, the timepiece dial plate and timepiece which the external appearance changes remarkably according to a motion etc. can be provided.

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.
<First Embodiment (Timepiece Dial)>
FIG. 1 is a cross-sectional view showing a first embodiment of a timepiece dial according to the present invention, and FIG. 2 is a cross-sectional view showing a state in which the timepiece dial shown in FIG. 1 is tilted. In the following description, it is assumed that the upper side in FIG. 1 is the observer side when the timepiece dial is used. (The same applies to FIGS. 2, 3, 4, 5, 6, and 7 described later). In the following description, a case where the timepiece dial 1A is applied to the timepiece 100 described later will be mainly described.
As shown in FIG. 1, the timepiece dial 1 </ b> A includes a hollow substrate 2, a liquid layer 3, and a cover member 5.

[Hollow substrate]
The hollow substrate 2 is made of a light transmissive material. In the hollow substrate 2, for example, an upper surface plate 21 and a lower surface plate 22 are bonded to each other in the vicinity of their peripheral portions, and the vicinity of the center portion is a hollow portion 23.
As a constituent material of the hollow substrate 2, for example, various plastics, various glasses, various ceramics and the like can be used, but the hollow substrate 2 is preferably composed of plastic (particularly heat-resistant plastic). Thereby, for example, it is possible to provide a timepiece dial 1A that is generally relatively light and easy to carry. For example, it can be formed into a desired shape relatively easily. Moreover, since it is a non-metallic material, it can be suitably applied to a radio timepiece dial.

  Examples of the plastic material constituting the hollow substrate 2 include various thermoplastic resins and various thermosetting resins. For example, the plastic material is mainly composed of polycarbonate and / or acrylonitrile-butadiene-styrene copolymer. Is preferred. Thereby, the strength of the timepiece dial 1A as a whole can be made particularly excellent, and the degree of freedom in molding at the time of manufacturing the timepiece dial 1A (hollow substrate 2) is increased (ease of molding). Improved). The hollow substrate 2 may have a substantially uniform composition at each site, or may have a different composition depending on the site. In addition, the hollow substrate 2 may be formed of at least a part (particularly, the upper surface plate 21) made of a light-transmitting material, but the whole is made of a light-transmitting material. Preferably there is. Thereby, the timepiece dial 1 can be suitably applied to a solar timepiece as described later.

The color of the hollow substrate 2 may be any color and is not particularly limited. When the hollow substrate 2 is white, the aesthetic appearance of the timepiece dial 1A (particularly the aesthetic appearance when applied to the timepiece 100) can be made particularly excellent. 100 can be provided with a superior luxury. When the hollow substrate 2 is substantially transparent (more specifically, the transmittance of light in the visible light region is 90% or more), the transmittance of light as the timepiece dial 1A is The power generation efficiency of the solar cell 9 can be made particularly excellent in a timepiece (solar timepiece) 100 as will be described later.
The shape and size of the hollow substrate 2 are not particularly limited, and are usually determined based on the shape and size of the timepiece dial 1A.

The average thickness of the hollow substrate 2 is not particularly limited, but is preferably 100 to 1000 μm, and more preferably 200 to 800 μm. When the average thickness of the hollow substrate 2 is a value within the above range, the timepiece dial can be used when applied to a timepiece 100 as will be described later while the light transmission of the timepiece dial 1A is sufficiently high. Through 1A, it is possible to more reliably prevent the color or the like of the solar cell 9 from being seen through, and the decorativeness (aesthetic appearance) can be made particularly excellent.
The hollow substrate 2 has a partition wall 24. The hollow substrate 2 has a liquid repellent film 25 on the inner surface thereof. The partition wall 24 and the liquid repellent film 25 will be described in detail later.
Although not shown in FIG. 1, for example, a time scale, decorative characters, marks, and the like are provided on the first surface 26 side of the hollow substrate 2 that is the surface on the viewer side.

[Liquid layer]
The hollow portion 23 of the hollow substrate 2 is provided with a liquid layer 3 in which a plurality of liquids that do not melt together (phase-separated) are sealed. By providing the liquid layer 3 in the hollow portion 23, the liquid in the hollow portion 23 moves according to the movement of the timepiece dial 1A, and the appearance of the timepiece dial 1A is remarkably changed. A visual effect is obtained, and the aesthetic appearance of the timepiece dial 1A can be made excellent.
The plurality of liquids constituting the liquid layer 3 may be any liquid that does not dissolve in each other, but preferably have different specific gravities. Thereby, the change of the external appearance according to movement etc. becomes more remarkable, the especially outstanding visual effect is acquired, and the aesthetic appearance of 1 A of timepiece dials becomes especially excellent.

In the example illustrated in FIG. 1, a case where two types of liquids, that is, a first liquid 31 and a second liquid 32 having a specific gravity smaller than that of the first liquid are encapsulated as a plurality of liquids is described as an example. However, the present invention is not limited to this, and for example, three or more kinds of liquids may be enclosed.
Moreover, it is preferable that the liquid which comprises the liquid layer 3 has a light transmittance. As a result, a clear and transparent appearance can be obtained, and the decorativeness (aesthetics) of the timepiece dial 1A can be made particularly excellent. Further, if the liquid constituting the liquid layer 3 is light-transmitting, the timepiece dial 1A can sufficiently transmit electromagnetic waves (radio waves and light) from the outside. Accordingly, the timepiece dial 1A can be suitably applied to, for example, a radio timepiece, a solar timepiece (a timepiece incorporating a solar battery), a solar radio timepiece, and the like.

  Moreover, it is preferable that the liquid (the 1st liquid 31 and the 2nd liquid 32) which comprises the liquid layer 3 mutually differs in a color tone so that it can distinguish clearly from another liquid. Thus, by making the colors of the first liquid 31 and the second liquid 32 different, when the timepiece dial 1A is viewed from the upper side, a new color due to color overlap can be developed. At the same time, when the timepiece dial 1A is tilted, it is possible to produce light and shade due to the different degree of overlap. As a result, it is possible to express dynamic beauty in which the color or pattern of the timepiece dial 1A changes according to the movement or the like. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1A can be made particularly excellent.

The plurality of liquids constituting the liquid layer 3 do not have to be all colored, and may be colorless. For example, a colorless and transparent liquid can be used for the first liquid 31, and a colored liquid can be used for the second liquid 32.
The liquid constituting the liquid layer 3 may be colored with a colorant or the like, for example. Thereby, the range of color expression can be expanded in the design of the timepiece dial 1A. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1A can be made particularly excellent.
As the colorant, for example, dyes, pigments and the like can be used.
Examples of the dye that can be used include acid dyes, basic dyes, direct dyes, reactive dyes, disperse dyes, food dyes, and the like.

The method for enclosing the liquid in the hollow substrate 2 is not particularly limited. For example, a thin flow path is provided at the corner of the hollow substrate 2 and the liquid is vacuum-injected, followed by adhesion, heat, When sealed with an ultraviolet curable resin or the like, it is possible to more reliably prevent the liquid inside from leaking over a long period of time. A plurality of liquids having different specific gravities can be managed, for example, by controlling the injection amount with a dispenser or an ink jet.
In addition to the liquid layer 3 as described above, the hollow portion 23 of the hollow substrate 2 may have an air layer (not shown). Thereby, the change of the external appearance according to movement etc. becomes more remarkable, the especially outstanding visual effect is acquired, and the aesthetic appearance becomes especially excellent.

[Partition wall]
As described above, in the timepiece dial 1 </ b> A of the present embodiment, the partition wall portions 24 are provided on the upper surface plate 21 constituting the hollow substrate 2 in a predetermined pattern in the thickness direction toward the lower surface plate 22. In other words, in the hollow part 24 of the hollow substrate 2, the partition part 24 protruding in the thickness direction is provided in a predetermined pattern. As a result, an opening is formed between the partition wall 24 and the lower surface plate 22, and a flow path in which a liquid described later can move in the hollow portion 24.

  By having the partition wall portion 24 in this way, for example, when the timepiece dial 1A (hollow substrate 2) is tilted as shown in FIG. 2, the partition wall portion 24 allows a liquid having a low specific gravity (second liquid 32). Can be restricted. Specifically, for example, when the timepiece dial 1 </ b> A is tilted, the liquid having a small specific gravity (second liquid 32) does not move excessively near the end of the hollow substrate 2. Can be prevented. For example, the flow (direction of flow) of the liquid can be controlled. Thereby, the dynamic beauty in which the color (density) and the pattern of the timepiece dial 1A change according to the movement or the like can be expressed more suitably. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1A can be made particularly excellent.

The arrangement pattern of the partition walls 24 is not particularly limited, and may be, for example, a stripe shape or a lattice shape. Further, other arbitrary patterns may be used, and for example, a radial pattern, a spiral pattern, or the like can be used. Thereby, the movement of a liquid can be adjusted suitably and 1 A of timepiece dials excellent in the aesthetic appearance can be provided.
The partition wall 24 is preferably made of a material having substantially the same refractive index as that of the hollow substrate 2 (upper surface plate 21). More specifically, the absolute value of the difference between the refractive index of the constituent material of the partition wall portion 24 and the refractive index of the constituent material of the hollow substrate 2 (upper surface plate 21) is preferably 0.10 or less. .05 or less is more preferable. Thereby, when the timepiece dial 1A is viewed from the first surface 26 side, the partition wall portion 24 can be made less noticeable, and the decorativeness (aesthetic appearance) of the timepiece dial 1A is particularly excellent. Can be.

Moreover, it is preferable that the partition part 24 is comprised with the material same as the constituent material of the hollow substrate 2 (upper surface board 21). Thereby, when the timepiece dial 1A is viewed from the first surface 26 side, the partition wall portion 24 can be made less conspicuous, and the decorativeness (aesthetic appearance) of the timepiece dial 1A is further improved. Can be.
When the hollow substrate 2 and the partition wall portion 24 are made of the same plastic material, the hollow substrate and the partition wall portion 24 can be integrally formed by molding, so that the process can be simplified and the partition wall portion 24 can be simplified. Can be easily formed in a desired shape (pattern).

  Although the thickness of the partition part 24 shown by t in FIG. 1 is not specifically limited, It is preferable that it is 10-500 micrometers, and it is more preferable that it is 50-280 micrometers. When the thickness of the partition wall portion 24 is a value within the above range, the movement of the liquid can be more suitably adjusted. Further, when the timepiece dial 1A is viewed from the front side, the partition wall portion 24 can be made less conspicuous. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1A can be made particularly excellent. On the other hand, when the thickness of the partition wall portion 24 is less than the lower limit value, the effect of having the partition wall portion 24 may not be sufficiently exhibited. On the other hand, if the thickness of the partition wall portion 24 exceeds the upper limit, depending on the constituent material of the partition wall portion 24, it may be difficult to make the appearance of the timepiece dial 1A sufficiently excellent. .

  Moreover, the pitch between the partition parts 24 indicated by p in FIG. 1 is not particularly limited, but is preferably 0.1 to 15 mm, and more preferably 0.2 to 5.0 mm. When the pitch between the partition walls 24 is a value within the above range, the movement of the liquid can be more suitably adjusted. Further, when the timepiece dial 1A is viewed from the first surface 26 side, the partition wall portion 24 can be made less conspicuous. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1A can be made particularly excellent. On the other hand, when the pitch between the partition walls 24 is less than the lower limit value, it is difficult to make the appearance of the timepiece dial 1A sufficiently excellent depending on the constituent material, thickness, and the like of the partition wall 24. There is a possibility. On the other hand, if the pitch between the partition walls 24 exceeds the upper limit, it may be difficult to appropriately adjust the movement of the liquid depending on the height, thickness, and the like of the partition walls 24.

The ratio of the thickness of the hollow portion 23 of the hollow substrate 2 shown in FIG. 1 _{h 1} (the height) [mm], a height of the partition wall 24 shown in _{h 2} and [mm] _(h 2 / h ₁₎ is not particularly limited, but is preferably 0.1 to 0.9, more preferably 0.2 to 0.8. When the ratio (h ₂ / h ₁ ) between the thickness (height) of the hollow portion 23 and the height of the partition wall portion 24 is a value within the above range, the movement of the liquid can be adjusted more suitably. Further, when the timepiece dial 1A is viewed from the first surface 26 side, the partition wall portion 24 can be made less conspicuous. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1A can be made particularly excellent. In contrast, if the ratio between the height [mm] of the partition wall portion 24 represented by _{h 2 (h 2 / h 1} ) is less than the above lower limit value, the height of the partition wall 24, the distance between the partition wall 24 In some cases, it may be difficult to appropriately adjust the movement of the liquid. On the other hand, if the ratio between the height [mm] of the partition wall portion 24 represented by _{h 2 (h 2 / h 1} ) exceeds the upper limit, the movement of the liquid is excessively inhibited, the movement of the liquid suitable May be difficult to adjust. Further, depending on the constituent material, thickness, and the like of the partition wall 24, it may be difficult to make the appearance of the timepiece dial 1A sufficiently excellent.
Further, the heights of the partition walls 24 do not have to be the same, and may vary depending on the part. Thereby, the movement of the liquid can be adjusted more suitably. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1A can be made particularly excellent.

[Liquid repellent film]
In the present embodiment, the inner surface of the hollow substrate 2 is provided with a liquid repellent film 25 having liquid repellency with respect to the liquid constituting the liquid layer 3. Thereby, it is possible to prevent the hollow substrate 2 from being colored by the liquid sealed in the hollow substrate 2. As a result, the discoloration resistance as the timepiece dial 1A can be improved, and the aesthetic appearance of the timepiece dial 1A can be further improved over a long period of time.

  Examples of the material constituting the liquid repellent film 25 include fluorine, a fluorine silicon compound, a silicone compound, and a polymer compound having these in the side chain. The liquid repellent film 25 is, for example, a parallax coat (R) (Tokyo product) mainly composed of a fluorine-containing organic compound or a fluorine-containing silane coupling compound as disclosed in JP-A-4-505895. It may be formed using Development Laboratory).

The formation method of the liquid repellent film 25 is not particularly limited. For example, a method of applying a solution of the above material to the hollow substrate 2 (for example, an immersion method, a coating method, a spray method, etc.) And the like (for example, vacuum deposition, sputtering, plasma polymerization, etc.).
The thickness of the liquid repellent film 25 is not particularly limited, but is preferably 5 to 300 nm, and more preferably 10 to 200 nm. When the thickness of the liquid repellent film 25 is within the above range, the liquid repellent film 25 can be suitably formed with a more uniform thickness, and the effect of preventing coloring can be obtained more remarkably. Thereby, the aesthetic appearance of the timepiece dial 1A can be made particularly excellent for a long time. On the other hand, if the thickness of the liquid repellent film 25 is less than the lower limit, the effect of the liquid repellent film 25 may not be sufficiently obtained. On the other hand, if the thickness of the liquid repellent film 25 exceeds the upper limit, it may be difficult to form the liquid repellent film 25 with a uniform thickness.
The liquid repellent film 25 only needs to have liquid repellency with respect to at least one of the plurality of liquids constituting the liquid layer 3. For example, the liquid repellent film 25 may have a liquid repellency with respect to a liquid having high dyeability with respect to the hollow substrate 2 (part excluding the liquid repellent film 25).

[Cover member]
By the way, in the outer peripheral portion of the timepiece dial 1A (hollow substrate 2), extreme liquid movement is more likely to occur than in the central portion, and as a result, in the outer peripheral portion of the timepiece dial 1A (hollow substrate 2). The color may become extremely dark or light. If there is such an extreme color deviation, the appearance may be adversely affected. Therefore, in the present embodiment, the vicinity of the outer peripheral portion of the timepiece dial 1A (hollow substrate 2) is covered with the cover member 5 made of a light-impermeable material. Thereby, in the area where the main surface of the timepiece dial 1A (hollow substrate 2) is visually recognized, it is possible to alleviate the extreme color deviation and the like, and especially the decorativeness (aesthetic appearance) of the timepiece dial 1A. It can be excellent.

  Light transmittance of the timepiece dial 1A having the above-described configuration (from the first surface 26 side which is one main surface of the hollow substrate 2 to the second surface 27 which is the opposite main surface) The light transmittance to the side) is not particularly limited, but is preferably 10 to 95%, more preferably 30 to 50%. When the light transmittance is a value within the above range, the aesthetic appearance (aesthetics) of the timepiece dial 1A can be made particularly excellent. On the other hand, when the transmittance is less than the lower limit, there is a possibility that a sufficient amount of light for power generation in the solar cell 9 may not be obtained when applied to a timepiece as described later. On the other hand, if the light transmittance exceeds the upper limit, it may be difficult to make the appearance of the timepiece dial 1A sufficiently excellent depending on the liquid constituent materials and the like.

<Second Embodiment (Timepiece Dial)>
Next, a second embodiment of the timepiece dial of the present invention will be described.
FIG. 3 is a cross-sectional view showing a second embodiment of the timepiece dial of the present invention, and FIG. 4 is a cross-sectional view showing a state in which the timepiece dial shown in FIG. 3 is tilted.
Hereinafter, the timepiece dial of the present embodiment will be described with a focus on differences from the above-described embodiment, and description of similar matters will be omitted.

As shown in FIG. 3, the timepiece dial 1 </ b> B of this embodiment includes a hollow substrate 2 and a liquid layer 3. In the timepiece dial 1B of the present embodiment, the upper surface plate 21 of the hollow substrate 2 has a convex curved plate shape. That is, the timepiece dial 1B of the present embodiment is the same as the above-described embodiment except that the timepiece dial 1B does not have the cover member 5 and the shape of the top plate 21 is different.
By making the upper surface plate 21 of the hollow substrate 2 into a convex curved plate shape (dome shape), a liquid having a small specific gravity (second liquid 32) is removed from a plurality of liquids enclosed in the hollow portion 23. 1B (hollow substrate 2) can be easily collected near the central portion in the main surface direction. As a result, each liquid can be arranged in a unique pattern, and a particularly excellent appearance can be obtained.

Further, by making the upper surface plate 21 of the hollow substrate 2 into a convex curved plate shape (dome shape), the amount of liquid movement accompanying the movement (change in tilt) of the timepiece dial 1B can be reduced. Thereby, it can have a relatively stable appearance while maintaining a dynamic visual effect.
Further, as shown in FIG. 4, when the timepiece dial 1B is tilted, the timepiece dial 1B comes off the center portion. By utilizing this, the timepiece dial 1B of this embodiment (and the timepiece having the timepiece dial 1B) can also have a function as a level.

  In the example shown in FIGS. 3 and 4, the case where the partition wall as described above is not provided is described as an example. However, for example, the top plate 21 has the partition wall as described above. There may be. Thereby, the movement of the liquid can be adjusted more suitably. Specifically, for example, when the timepiece dial 1B is tilted as shown in FIG. 4, it is possible to prevent the movement of the liquid having a small specific gravity from being excessively biased with respect to the tilt. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1B can be made particularly excellent.

<Third Embodiment (Timepiece Dial)>
Next, a third embodiment of the timepiece dial of the present invention will be described.
FIG. 5 is a cross-sectional view showing a third embodiment of the timepiece dial of the present invention, and FIG. 6 is a cross-sectional view showing a state in which the timepiece dial shown in FIG. 5 is tilted.
Hereinafter, the timepiece dial of the present embodiment will be described with a focus on differences from the above-described embodiment, and description of similar matters will be omitted.

  As shown in FIG. 5, the timepiece dial 1 </ b> C of this embodiment includes a hollow substrate 2 and a liquid layer 3. In the timepiece dial 1C of the present embodiment, in addition to the upper surface plate 21 of the hollow substrate 2 having a convex curved plate shape, the lower surface plate 22 of the hollow substrate 2 has a curved plate shape (concave curved plate shape). is there. That is, the timepiece dial 1B of the present embodiment is the same as the second embodiment described above except that it does not have the cover member 5 and the shape of the lower surface plate 22 is different.

  As described above, in the timepiece dial 1C of the present embodiment, in addition to the upper surface plate 21 of the hollow substrate 2 having a convex curved plate shape, the lower surface plate 22 of the hollow substrate 2 has a curved plate shape (concave curved plate). State). As a result, the distance from the first surface 26 to the second surface 27 can be made substantially equal over the entire surface of the timepiece dial 1C. As a result, it is possible to effectively prevent unintentional color unevenness in the timepiece dial 1C.

  Further, among the plurality of liquids sealed in the hollow portion 23 of the hollow substrate 2, a liquid having a small specific gravity (second liquid 32) is placed near the central portion in the main surface direction of the timepiece dial 1 </ b> C (hollow substrate 2). Can be particularly easy to gather. Further, since the amount of liquid sealed in the hollow portion 23 of the hollow substrate 2 can be reduced, it is advantageous from the viewpoint of resource saving. Further, in the timepiece provided with the timepiece dial 1C, a space for accommodating a member such as a movement or a solar cell can be secured on the lower surface (second surface 27) side of the timepiece dial 1C. It is also advantageous for making the watch thinner.

  In the example shown in FIGS. 5 and 6, the case where the partition wall as described above is not provided is described as an example. However, for example, the top plate 21 has the partition wall as described above. There may be. Thereby, the movement of the liquid can be adjusted more suitably. Specifically, for example, when the timepiece dial 1C is tilted as shown in FIG. 6, it is possible to prevent the movement of the liquid having a small specific gravity from being excessively biased with respect to the tilt. As a result, the decorativeness (aesthetic appearance) of the timepiece dial 1C can be made particularly excellent.

<Clock>
Next, the timepiece of the present invention provided with the timepiece dial 1 (1A, 1B, 1C) of the present invention as described above will be described.
The timepiece of the present invention has the timepiece dial 1 of the present invention as described above. As described above, the timepiece dial 1 of the present invention is excellent in decorativeness (aesthetic appearance). For this reason, the timepiece of the present invention provided with such a timepiece dial 1 is also excellent in decorativeness (aesthetic appearance). Further, as described above, the timepiece dial 1 is also excellent in light transmittance (electromagnetic wave permeability). Therefore, the timepiece of the present invention provided with such a timepiece dial 1 can sufficiently satisfy the required requirements as a solar timepiece or a radio timepiece. As the parts other than the timepiece dial 1 (the timepiece dial 1 of the present invention) constituting the timepiece of the present invention, known parts can be used. An example will be described.

FIG. 7 is a cross-sectional view showing a preferred embodiment of the timepiece (watch) of the present invention.
As shown in FIG. 7, the wristwatch (portable timepiece) 100 of 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 of the present invention as described above, the solar cell 9, and the movement 71 are accommodated, and further, hands (pointers) (not shown) and the like are accommodated. .

In the timepiece 100, the timepiece dial 1 is covered with a member (cover member) 86 made of a light-impermeable material in the vicinity of the outer peripheral portion thereof. Thereby, even if the timepiece dial 1 itself does not have the cover member 5 as described above, the same effect as described above can be obtained. That is, in the region where the main surface of the hollow substrate 2 of the timepiece dial 1 is visually recognized, it is possible to alleviate extreme color deviation and the like, and the decorativeness (aesthetic appearance) of the timepiece 100 is particularly excellent. be able to.
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 timepiece dial 10 of the present invention, a sufficient amount of light can be incident on the solar cell 9.
The movement 71 uses the electromotive force of the solar cell 9 to drive the pointer.

Although omitted in FIG. 7, in the movement 71, for example, an electric double layer capacitor for storing the electromotive force of the solar cell 9, a lithium ion secondary battery, a crystal oscillator as a time reference source, 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 9 has a function of converting light energy into electric energy. The electric energy converted by the solar cell 9 is used for driving the movement.
In the solar cell 9, 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 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.

As mentioned above, although preferred embodiment of this invention was described, this invention is not limited to these.
For example, in the embodiment described above, in the timepiece dial, the hollow substrate has been described as having a liquid repellent film, but the timepiece dial of the present invention is not limited to such a configuration, for example, The timepiece dial may not have a liquid repellent film.

  In the embodiment described above, the timepiece of the present invention has been described as including a timepiece dial having a hollow substrate and a liquid layer. However, the timepiece of the present invention is made of a light-transmitting material. The hollow substrate and the liquid layer that is sealed in the hollow portion of the hollow substrate, has light transmittance, and is composed of a plurality of liquids that do not melt together. You may not have as a part of structure of the timepiece dial. For example, the timepiece of the present invention may have a hollow member in which a liquid layer is sealed instead of the cover glass described above.

It is sectional drawing which shows 1st Embodiment of the dial for timepieces of this invention. It is sectional drawing which shows the state which inclined the timepiece dial shown in FIG. It is sectional drawing which shows 2nd Embodiment of the dial for timepieces of this invention. It is sectional drawing which shows the state which inclined the dial for timepieces shown in FIG. It is sectional drawing which shows 3rd Embodiment of the timepiece dial of this invention. It is sectional drawing which shows the state which inclined the timepiece dial shown in FIG. It is sectional drawing which shows suitable embodiment of the timepiece (portable timepiece) of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1, 1A, 1B, 1C ... Timepiece dial 2 ... Hollow substrate 21 ... Upper surface plate 22 ... Lower surface plate 23 ... Hollow part 24 ... Partition part 25 ... Liquid repellent film 26 ... First surface 27 ... Second surface 3 ... Liquid layer 31 ... First liquid 32 ... Second liquid 5 ... Cover member 10 ... Dial (clock dial 1) 9 ... Solar cell 71 ... Movement 72 ... Body (case) 73 ... Back cover 74 ... Bezel (edge) 75 ... Glass plate (cover glass) 76 ... Winding pipe 77 ... Crown 771 ... Shaft 772 ... Groove 78 ... Plastic packing 79 ... Plastic packing 83 ... Rubber packing (crown packing) 84 ... Rubber packing (back cover packing) 85 ... Joining part (seal part) 86 ... Member (cover member) 100 ... Wristwatch (portable watch)

Claims (15)

A hollow substrate made of a light-transmitting material;
A timepiece dial comprising: a liquid layer made of a plurality of liquids that are sealed in a hollow portion of the hollow substrate and have light permeability and are not melted together.   The timepiece dial according to claim 1, wherein the plurality of liquids have different specific gravities.   3. The timepiece dial according to claim 2, wherein in the hollow portion of the hollow substrate, a partition wall portion protruding in a thickness direction is provided in a predetermined pattern.   The timepiece dial according to claim 3, wherein an absolute value of a difference between a refractive index of a constituent material of the partition wall and a refractive index of a constituent material of the hollow substrate is 0.10 or less.   The timepiece dial according to claim 2 or 3, wherein the first surface which is one main surface of the hollow substrate is a convex curved surface.   5. The timepiece dial according to claim 4, wherein the second surface of the hollow substrate facing the first surface is a curved surface, and the curved surface is an equidistant curved surface with respect to the first surface.   The timepiece dial according to any one of claims 1 to 6, wherein the plurality of liquids have different colors.   The timepiece dial according to claim 1, wherein the vicinity of the outer peripheral portion of the hollow substrate is covered with a cover member made of a light-impermeable material.   The timepiece dial according to any one of claims 1 to 8, wherein the hollow substrate has an inner surface subjected to a liquid repellent treatment.   The timepiece dial according to any one of claims 1 to 9, further comprising an air layer in the hollow portion of the hollow substrate together with the liquid layer.   The timepiece dial according to claim 1, wherein the timepiece dial is a wristwatch dial.   A timepiece comprising the timepiece dial according to claim 1. A hollow substrate made of a light-transmitting material;
A timepiece comprising: a liquid layer made of a plurality of liquids that are sealed in a hollow portion of the hollow substrate and have light permeability and are not melted together.   The timepiece according to claim 12 or 13, wherein the periphery of the hollow substrate is covered with a cover member made of a light-impermeable material.   The timepiece according to claim 12, wherein an air layer is provided together with the liquid layer in the hollow portion of the hollow substrate.

Images