JPH10253773A - Covering member used to cover surface of solar cell and electronic apparatus provided with it as well as watch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a covering member which does not lower the performance of an electricity-generating operation and whose outward appearance as a decorative property is enhanced by a method wherein a solar cell is covered with decorative patterns which partly cover the surface and the rear surface of a translucent member. SOLUTION: An insulating film 11 is formed on the whole face of a substrate 10 by using a sputtering apparatus, and an electrode film 12 is formed on it wholly or partly. A transparent electrode 14 is formed on a solar cell 13. A spacer 15 is fixed to the upper part of the transparent electrode 14 by using an adhesive or the like. In addition, a covering member 16 in which a time graduation, a character, a mark and the like are formed on one face is bonded to the upper part of the spacer 15, and a watch dial 8 is obtained. In the covering member 16, a decorative pattern 18 and a decorative pattern 19 are formed respectively on the surface and the rear surface of a translucent member 17. The decorative pattern 18 partly covers the surface of the translucent member 17 so as to condense light, and the decorative pattern 19 partly covers the rear surface of the translucent member 17 so that light reaches the solar cell 13.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a decorative structure for an electronic device having a solar cell.

[0002]

2. Description of the Related Art In recent years, from the standpoint of global environmental protection, solar cell elements have been attracting attention as a power source for small electronic devices such as quartz watches in place of conventional button type batteries. The solar cell element is extremely excellent as an energy source for an electronic timepiece from the standpoint of environmental conservation such as its power generation capacity, cleanliness of an energy source (does not include harmful heavy metals such as mercury and cadmium), and manufacture of the element itself.

Conventionally, a solar cell element of an electronic device equipped with a solar cell absorbs light and generates electric power.
As described in FIG. 4 of JP-A-102766,
A method has been adopted in which the structure is arranged on the upper surface of a timepiece dial so that the structure can be directly viewed from the windshield. Also, Japanese Patent Application Laid-Open
As described in FIG. 1 of Japanese Patent Publication No. 130379 and FIG. 2 of the Japanese Patent Publication, a method has been adopted in which an opening is provided in a timepiece dial, a solar cell is provided below the opening, and the structure is made visible from the outside. .

In order to ensure the aesthetic appearance of electronic devices such as watches by these means, 1) Due to the unique dark purple color of the solar cell, the design of the color and texture of the watch dial is large. You are restricted.

2) In addition, due to the unique dark purple color of the solar cell, the design of the hand indicating the time, such as color and texture, is greatly restricted.

3) Furthermore, the unique dark purple color of the solar cell limits the visibility of the time.

[0007] In particular, an electronic timepiece has a function of displaying the time and is also a product with a decorative property. Considering the merchantability, it is impossible to overlook this defect in appearance.

Further, as shown in FIG. 2 of Japanese Patent Application Laid-Open No. 52-65694, the solar cell element currently used is obtained by dividing the surface of the solar cell element into multiple stages due to the problem of power generation voltage. The power is extracted by connecting them in series. For this reason, when the solar cell element is used as a timepiece dial, the multi-stage dividing line becomes visible, which is very useful for the function of displaying the time, but has a problem that the appearance is not preferable. In particular, it is difficult to anticipate the demand of people who prefer luxury goods. Therefore, in order to solve these problems, various methods as described below have been considered.

Method 1: As described in Japanese Patent Application Laid-Open No. 05-29641, a method in which cholesteric liquid crystals are microencapsulated and used as a binder and applied to the light receiving surface of a solar cell to obtain coloring means.

Method 2: As shown in FIG. 1 of Japanese Utility Model Laid-Open No. 05-92776, a method of covering the upper part of the light receiving surface of a solar cell with a semi-transparent material.

Method 3: As shown in FIG. 1 of JP-A-07-198866, a method in which resin films are formed on both surfaces of a light-transmitting member and the upper portion of the light-receiving surface of the solar cell is covered with the resin films.

[0012]

However, the above-mentioned method still has the following disadvantages.

Disadvantage of method 1: With the means described in Japanese Patent Application Laid-Open No. 5-29641, there are few selectable colors and a deeper color as the color of the timepiece dial, and the color of the timepiece dial is limited. . In particular, those with white tones are difficult to express.

Disadvantage of method 2: According to the method described in Japanese Utility Model Laid-Open No. 05-92776, the unique dark purple color and the multi-stage dividing line of the solar cell are not directly visible to the naked eye. However, the material of the member that covers the upper part of the light-receiving surface of the solar cell was limited to those that have translucency, so the metal-like high-grade appearance finish blocks the light to the entire timepiece dial. Could not be applied.

When the translucent material is a white plastic, by covering the solar cell, the timepiece dial can be seen as if only the multi-stage dividing line portion of the solar cell element is transparent through white or the portion where the solar cell is located. May appear black and cloudy, which is not preferable in appearance. Even when the translucent material is black plastic, by covering the solar cell, the watch dial can be seen through only the multi-tiered dividing line of the solar cell element, and the part with the solar cell can be seen through.
It may appear gray and cloudy, which is not preferable in appearance. In particular, it is difficult to express the appearance of pure white, pure black, pure blue or the like in the color tone of the timepiece dial. It is considered that light transmitted through the translucent material and reflected on the surface of the solar cell element transmits through the translucent material again.

Disadvantage of method 3: JP-A-07-198886
In the means described in the publication, the number of layers covering the upper part of the light receiving surface of the solar cell is increased, so that the shielding effect of the solar cell is increased,
Pure color was easily expressed, but it was still insufficient. Further, when the number of layers covering the upper part of the light receiving surface of the solar cell is increased, it is conceivable that the power generation performance of the timepiece with a solar cell may be reduced.

Therefore, in order to solve the above-mentioned problems, an object of the present invention is to improve the decorative appearance (improvement of appearance) of an electronic device with a solar cell including a clock without reducing the power generation performance. It is in.

[0018]

Means for Solving the Problems In order to achieve the above object, the structure of the covering member for covering the upper surface of the solar cell of the electronic device with the solar cell of the present invention is constituted as follows.

Claim 1 shows the basic structure of the present invention, which is characterized in that a covering member for covering the upper part of the solar cell comprises: a) a translucent member; and b) the translucent member. A) a decorative pattern A disposed so as to partially cover the upper surface of the transparent member; and c) a decorative pattern B disposed so as to partially cover the lower surface of the translucent member. By the decorative pattern A and the decorative pattern B,
That is, it is provided so as to cover the solar cell.

Here, as the translucent member, a member that can transmit light such as visible light, infrared light, far infrared light, and ultraviolet light is used.
Main materials include glass, plastic, ceramics, papers, cloths, and the like. In the case of glass, in particular, when sapphire glass is used, it is possible to make it thinner in terms of strength, and various decorations can be given in terms of processing, so that a variety of designs can be realized. For plastic, acrylic, polycarbonate, or the like is used. When the material of the light-transmitting member is glass, plastic, or the like, it is preferable to enrich the design variety in colors by using a colorless transparent or achromatic semi-transparent, achromatic semi-transparent material such as gray. . On both surfaces of the translucent member, a partial decorative pattern A is provided on the upper surface and a partial decorative pattern B is provided on the lower surface.

The materials used for the decorative pattern are metals, plastics, ceramics, glass and the like. By selecting and using one or more of these materials, it is possible to enrich the design variety in texture. Good. On the other hand, it is preferable to use a luminous body such as a fluorescent substance for the decoration pattern and to enrich the design variety so that decoration can be performed not only in the daytime but also in the nighttime.

The shape of the decorative pattern may be any shape. As an example, if the decorative pattern is a geometric pattern, it may be a repetitive pattern of a fixed shape such as a checkered pattern or a houndstooth check pattern. Also, radial patterns,
It is good to enrich the design variety in the shape by using a spiral pattern or the like. The decorative pattern A and the decorative pattern B may have the same shape and size, or may be different. Furthermore, if the decorative pattern A protrudes from the translucent member, a three-dimensional effect of the timepiece dial can be produced.

The method of manufacturing the decorative patterns A and B is based on the combination of the material of the translucent member and the materials of the decorative patterns A and B, such as injection molding of plastics, laser irradiation, plating, vapor deposition, and the like. The most suitable means is selected from various methods such as photo engraving (etching), cutting, grinding / polishing, electric discharge, casting, metal engraving, sintering, ultraviolet curing, printing, press-fitting, caulking, adhesion, welding by ultrasonic waves, etc. Is done.

Thus, regardless of the material of the decorative pattern A and the decorative pattern B, light can enter from the area of the translucent member where the decorative pattern A is not provided, and Part of the incident light exits from the area where the decorative pattern B is not disposed, by refracting the inside of the conductive member, so that the light can reach the solar cell element, and power generation is possible. Become. Light incident from an area of the translucent member where the decorative pattern A is not provided is refracted in the translucent member, is reflected on the upper surface of the decorative pattern B, and is again reflected on the lower surface of the decorative pattern A. Reflected by
Since light exits from the area where the decorative pattern B is not provided, the light can reach the solar cell element, and power can be generated. In addition, by adjusting the surface roughness of the upper surface of the decorative pattern B and the lower surface of the decorative pattern A, the reflectance of light can be adjusted, and the amount of power generation to the solar cell and the overcharge can be prevented.

Therefore, even if the material of the decorative pattern A and the decorative pattern B is metal, for example, the decorative pattern is partially disposed on the translucent member, so that light can reach the solar cell element. At the same time, a high-quality metallic appearance can be obtained. If the entire upper or lower surface of the translucent member is covered with a metal or the like that cannot transmit light, the light is blocked, and power cannot be generated by the solar cell element. However, the most significant feature of the present invention is that power can be generated even if the surface of the translucent member is covered with a material that cannot transmit light, such as metal. The reason is that since the upper and lower surfaces of the translucent member are partially covered with metal, sunlight can enter from a portion not covered with metal, and power can be generated. Further, when the covering member is directly viewed from above, the upper surface and the lower surface of the translucent member are partially covered with metal, so that the metal surface can be seen and the solar cell can be made invisible by overlapping the two.

The method of providing small balls (beads) such as metal, glass, and ceramics on the surface of the light-transmitting member is described in Japanese Patent Application Laid-Open No. 07-134185, claims 1 to 12 and FIGS. And is similar to “partially cover the upper surface of the translucent member” of the present invention.
However, this “decorative pattern” cannot be said to be a standard pattern because the applied amount of beads varies. Therefore, if the application amount of beads varies, the amount of light that can reach the solar cell element varies, and stable power generation cannot be performed. Further, if the amount of the adhesive for bonding the beads varies, the amount of light that can reach the solar cell element is a major factor that causes a variation, and stable power generation cannot be performed. The shapes of the “decorative pattern A” and “decorative pattern B” of the present invention are manufactured in a standard pattern, so that there is no variation in the amount of light that can reach the solar cell element, and power can be generated with confidence. .

Further, the substrate, the electrode film, the solar cell, and the light-transmitting member constituting the electronic device with a solar cell are curved in a cross-sectional direction, and a decorative pattern A and a curved light-transmitting member are provided on the upper surface of the curved light-transmitting member. The decorative pattern B may be provided on the lower surface of the conductive member to cover the entire upper surface of the solar cell, or may be partially covered.

If the direction of the curvature is upwardly convex or downwardly concave, it gives a three-dimensional effect, improves the visibility of time, and increases the surface area of the solar cell to increase the light receiving area. Increase power generation performance.

A second aspect of the present invention is characterized in that the decorative pattern A and the decorative pattern B are overlapped in a plane so as to cover the entire surface of the solar cell. When the watch face is viewed directly from the top, the solar cells are not visible. In addition, the solar cell is arranged so as not to be seen when the timepiece dial is viewed directly from an angle.

Even if the decorative pattern A and the decorative pattern B are made of a light shielding material such as a metal, light can enter from an area of the translucent member where the decorative pattern A is not provided. Part of the incident light exits from the area where the decorative pattern B is not provided by being refracted in the translucent member, so that the light can reach the solar cell element, and power generation can be performed. It becomes possible. In addition, when viewed from the top, the solar cell becomes invisible, and the appearance with the metal finish and the jewelry member is provided, so that the appearance quality can be improved. further,
When viewed obliquely, it becomes possible to make the solar cell invisible.

According to a third aspect of the present invention, the decorative pattern A and the decorative pattern B are arranged at positions not overlapping each other in a plane. When the timepiece dial is viewed directly from the upper surface, the solar cell is not visible. When the timepiece dial is viewed obliquely, the solar cell is visible.

While the area of the decorative pattern covering the entire surface of the solar cell is minimized, the largest area capable of condensing light on the surface of the solar cell can be ensured. The decorative pattern A and the decorative pattern B may or may not be geometric patterns. The reflectance of light can be adjusted by adjusting the surface roughness of the surface portion where the decorative pattern A and the decorative pattern B are in contact with the translucent member, so that the amount of power generation to the solar cell and the overcharge can be prevented.

According to a fourth aspect of the present invention, the decorative pattern A and the decorative pattern B partially cover the upper portion of the solar cell by planar superposition. The solar cell is visible when the watch face is viewed directly from the top, and the solar cell is also visible when the watch face is viewed diagonally.

The color tone of the solar cell element can be enhanced in design variety by combining the decorative pattern A and the decorative pattern B.

A fifth aspect of the present invention is characterized in that one or both of the decorative pattern A and the decorative pattern B are embedded in a light transmitting member. The decorative pattern A and the decorative pattern B may or may not protrude from the surface of the translucent member. If the decorative pattern A (decorative pattern B) protrudes from the surface of the translucent member, a three-dimensional decorative pattern can be created. Also, decorative pattern A
By preventing the (decorative pattern B) from protruding from the upper surface (lower surface) of the translucent member, it is possible to prevent the decorative pattern from being rubbed and damaged during disassembly and assembly. Further, the thickness of the entire electronic device can be reduced.

A sixth aspect of the present invention is characterized in that the translucent member is provided with a plurality of uneven portions on the surface.

By creating a three-dimensional decorative pattern, the appearance of the timepiece dial can be improved. By using this three-dimensional decorative pattern as a means for switching the light path, it is possible to improve the power generation performance and to improve the appearance by making the multi-stage dividing line of the solar cell difficult to see.

According to a seventh aspect, the decorative pattern A is formed of a three-dimensional decorative pattern.

In addition to obtaining the same effects as in the sixth aspect, the light-transmitting member can be made of a flat plate, so that the production cost in mass production can be suppressed and the change of a multi-product model can be facilitated. . The change of the multi-product model is the decoration pattern A
It can be handled simply by changing the layout and shape of the.

[0040] The eighth aspect is characterized in that the translucent member is colorless and transparent.

While light passes through a colorless and transparent light-transmitting member, the light-transmitting member can be made of a material having a uniform refractive index, so that diffused reflection of light does not occur. improves.

A ninth aspect is characterized in that the translucent member is colored and transparent.

The light traveling through the translucent member is absorbed on the way, and the light reflected by the decoration pattern B is also absorbed on the way, so that the decoration pattern A and the decoration pattern A are absorbed. A difference in contrast and color tone can be expressed between B.

A tenth aspect is characterized in that the translucent member generates birefringence of light.

Since light is split in two directions and travels with a phase difference, a three-dimensional decoration can be applied by making the decorative pattern having a sense of perspective double. As described in claim 6, a plurality of uneven portions are provided on the surface of the translucent member,
As described in claim 7, a three-dimensional decoration can be performed by making the decoration pattern double, without providing a three-dimensional decoration pattern on the decoration pattern A.

The eleventh aspect is characterized in that one or both of the decorative pattern A and the decorative pattern B are made of metal. Finishing with a precious metal such as gold, silver or palladium can give the watch dial a high-grade appearance.

According to a twelfth aspect, in the eleventh aspect, the metal thickness of the decorative pattern A and the decorative pattern B is 0.1 μm.
0.30.3 μm. When the metal is thin, light can be transmitted, so that power generation performance can be improved. Furthermore, the appearance is improved because the multi-stage dividing line of the solar cell is not shown.

According to a thirteenth aspect, the covering member for covering the upper surface of the solar cell according to at least one of the first to twelfth aspects is used for an electronic device display unit. By providing the covering member, the background color can be freely set without being limited to the deep purple color of the solar cell, so that the visibility can be improved. According to a fourteenth aspect, the covering member for covering the upper surface of the solar cell according to at least one of the first to twelfth aspects is used for an electronic device display portion and an electronic device rear side.

If decoration is performed while arranging a solar cell on the opposite side of the electronic device display such as a timepiece dial, the light is illuminated even if the electronic device display is left in any posture. Power generation can always be performed if electronic equipment is placed in the place.

According to a fifteenth aspect, the covering member for covering the upper surface of the solar cell according to at least one of the first to twelfth aspects is used for an electronic device display unit and a portable band thereof. Since the decoration of the portable band is also performed, the appearance of the finished product can be improved.

Also, if a solar cell is also arranged on the band, the portable band is curved, so that light is received somewhere on the portable band even when the arm rotates. Therefore, power generation efficiency can be improved.

According to a sixteenth aspect, the covering member for covering the upper surface of the solar cell according to at least one of the first to twelfth aspects is used for an electronic device display portion, an electronic device back side, and a portable band thereof. Features. Claims 13, 14,
Since the mounting area of the solar cell is larger than that of No. 15, the power generation performance can be further improved. The decoration is applied not only to the display portion of the electronic device but also to the back side and the portable band, so that the appearance of the finished product can be further improved.

Claim 17 is Claim 13 to Claim 16
It is characterized in that at least one of the electronic devices with a solar cell is an electronic timepiece. In particular, it can be used as an electronic watch that has high utility value as a decorative item among electronic devices and requires portability, so that the appearance of the finished product can be improved and the power generation performance can be improved. Can be.

[0054]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view of an electronic timepiece with a solar cell according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a first example of a timepiece dial decoration.

FIG. 3 is a plan view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a first example of a timepiece dial decoration.

FIG. 4 is a cross-sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a second example of a timepiece dial decoration.

FIG. 5 is a plan view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a second example of a timepiece dial decoration.

FIG. 6 is a sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a third example of a timepiece dial decoration.

FIG. 7 is a plan view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a third example of a timepiece dial decoration.

FIG. 8 is a sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a fourth embodiment of the timepiece dial decoration.

FIG. 9 is a plan view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a fourth example of a timepiece dial decoration.

FIG. 10 is a cross-sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a fifth example of a timepiece dial decoration.

FIG. 11 is a plan view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a fifth example of a timepiece dial decoration.

FIG. 12 is a cross-sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a sixth example of a watch faceplate decoration.

FIG. 13 is a cross-sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a seventh example of a watch faceplate decoration.

FIG. 14 is a cross-sectional view of an electronic timepiece with a solar cell according to a second embodiment of the present invention. In addition to the first embodiment of the present invention, the opposite side of the timepiece dial (upper side). The same decoration as the watch dial is given while arranging solar cells.

FIG. 15 is a cross-sectional view of an electronic timepiece with a solar cell according to a third embodiment of the present invention. In addition to the first embodiment of the present invention, a solar cell is arranged in a portable band. It has the same decoration as the clock dial.

FIG. 16 is a cross-sectional view of an electronic timepiece with a solar cell according to a fourth embodiment of the present invention. In addition to the first embodiment of the present invention, the opposite side of the timepiece dial (upper side). In addition, the decoration similar to the timepiece dial is given while the solar cell is arranged in the portable band.

(First Embodiment) As shown in FIG. 1, a windshield 2 made of transparent glass is provided on an outer case 1, and a timepiece driving movement 4 is placed inside an outer case made of an outer case 1 and a back cover 3. Provide. The hour hand 5, minute hand 6, and second hand 7 are driven by a stepping motor or the like provided in the timepiece movement 4 as a drive source via a wheel train mechanism. Reference numeral 8 denotes a clock dial. The center of the timepiece dial 8 has a through hole through which the hour hand 5, minute hand 6, and second hand 7 pass, and is disposed on the timepiece movement 4.

The structure of the timepiece dial 8 shown in FIGS. The clock dial 8
It is fixed to the timepiece driving movement 4 via the foot 9 by press-fitting or swaging. Insulating film 1 on substrate 10
1 is provided thereon, an electrode film 12 is provided thereon, and a solar cell 13 is further arranged thereon, and a transparent electrode 14 covers the above. A covering member 16 is provided above the transparent electrode 14 with a spacer 15 interposed therebetween.
Is arranged. Even if the covering member 16 is warped or the covering member 16 is bent by an external impact or the like, the solar cell 13 is not directly hit. Further, it also serves to make the multi-stage dividing line of the solar cell 13 invisible. The spacer 15 is made of a material that does not transmit light.

A method of manufacturing the timepiece dial 8 will be described.

The substrate 10 is made of a metal material such as a stainless steel plate or brass, and the foot 9 is formed by spot welding at two places.

Next, the substrate 1 was
The insulating film 11 is provided on the entire surface of the “0”. The insulating film 11 uses a silicon oxide film.

Next, the electrode film 12 is provided using a sputtering apparatus. The electrode film 12 may be formed on the entire surface of the insulating film 11 or may be formed partially. The electrode film 12 uses aluminum.

Next, a solar cell 13 is formed on the electrode film 12. This solar cell 13 is formed continuously by a plasma enhanced chemical vapor deposition apparatus. The solar cell 13 is made of amorphous silicon as amorphous silicon, and has a pin type as a conductivity type. The solar cell 13 may be formed on the entire face of the timepiece dial, or may be formed partially. The solar cell 13 may use not only amorphous silicon but also crystalline silicon. Further, in order to improve the power generation performance, a tandem type in which amorphous silicon and crystalline silicon are stacked may be used.

Next, a transparent electrode 14 is formed on the upper surface of the solar cell 13 using a sputtering device. Transparent electrode 14
Uses indium tin oxide. A spacer 15 is fixed on the transparent electrode 14 by bonding or the like.

Thereafter, a covering member 16 having a time scale, characters, marks, etc. formed on one surface is joined to the upper portion of the spacer 15 using an adhesive, thereby completing a timepiece dial 8 having a solar cell.

The electrode film 12 functions as a lower electrode of the solar cell 13, and the transparent electrode 14 functions as an upper electrode of the solar cell 13.

In the covering member 16, a decorative pattern A 18 is provided on the upper surface of the translucent member 17, and a decorative pattern B 19 is provided on the lower surface of the translucent member 17.

The decorative pattern A18 is partially covered on the upper surface of the translucent member 17 so that light can be collected. The decorative pattern B19 is partially covered on the lower surface of the translucent member 17 so that light can reach the solar cell 13.

In the embodiment, the material of the substrate 10 is a metal material. However, a film-shaped substrate such as plastic may be used.

In the embodiment, the timepiece dial 8 is fixed to the timepiece movement 4 via the feet 9, but it may be fixed by double-sided bonding or the like without the feet 9.

<First Embodiment of Clock Dial Decoration> A first embodiment of the clock dial decoration will be described with reference to FIGS. 2 and 3. FIG. FIG. 3 is a plan view seen from the direction of arrow a. In FIG. 3, the hatched portion is the decorative pattern A18, and the hatched portion is the decorative pattern B1.
9 The planar surface of the decorative pattern A18 and the decorative pattern B19 covers the entire surface of the solar cell 13. Therefore, when looking in the direction of arrow a, the solar cell cannot be seen from the upper surface of the timepiece dial. When viewed from the direction of the arrow a, the decorative pattern A18 and the decorative pattern B19 do not overlap each other in plan view.

As the translucent member, a member that can transmit light such as visible light, infrared light, far infrared light, and ultraviolet light is used. Main materials include glass, plastic, ceramics, papers, cloths, and the like. Ceramics, papers, and cloths having a light transmittance of about 30% or more are used.

When the material of the light-transmitting member is glass, plastic, or the like, a colorless and transparent material or an achromatic and semi-transparent material such as colored translucent or gray is used to enhance the design variety in color. Is good. Above all, if a colorless and transparent material is used, the power generation performance can be most improved.

Therefore, it is preferable to use acrylic, polycarbonate, or the like as plastic, and it is possible to form a three-dimensional decoration by printing with ink or injection molding.

Further, when sapphire glass is used, the watch can be made thinner in terms of strength, and various decorations can be given on the processing side, so that various designs can be realized.
Examples of the method include printing with ink, forming a three-dimensional decoration by etching, and metal decoration by sputtering.

Further, if a crystal or calcite that generates birefringence of light, such as quartz or calcite, is used, the decoration pattern is made double, so that a three-dimensional decoration can be provided without providing the surface of the translucent member 17 with irregularities. Can be applied.

[First Embodiment of Clock Dial Decoration 1]
First Example of Clock Dial Decoration As a first example, consider a case where a colorless and transparent acrylic plate is used for the translucent member 17 and a decorative pattern A18 and a decorative pattern B19 are printed with ink.

As the colorless and transparent acrylic plate, a plate having a thickness of about 0.3 mm to 0.5 mm is used in consideration of the strength in an actual use state. The lattice-shaped decorative pattern A is printed on the upper surface of the translucent member 17 by ink, and the lattice-shaped decorative pattern B is printed on the lower surface of the translucent member 17 by ink. Printing colors are white, black,
Three types of blue. The lattice shape is a square of 0.3 mm square, and the printing thickness is 0.05 mm to 0.1 mm. Also,
The parting diameter of the timepiece dial is 25 mm in diameter. In addition,
As a printing method, any method such as screen printing, offset printing, octopus printing, and UV (ultraviolet) printing may be used.

When actually manufactured, a pure white color can be expressed by using a colorless and transparent acrylic plate as compared with a case of using a white translucent acrylic plate.
During the passage of light through the colorless and transparent plate material, the material is formed with a uniform refractive index, so that light is not diffusely reflected. Diffuse reflection of light occurs only when light passes through the decorative patterns A and B. On the other hand, when a white translucent plate material is used, since the material is not formed with a uniform refractive index, the light travels through the plate material while generating irregular reflection, so that it is gray or cloudy. It is thought that it becomes the color that I did. It is considered that the cause of the irregular reflection is a dye that dyes the acrylic plate white. Since the content of the white dye is unevenly scattered in the plate material, it is considered that diffused reflection easily occurs. Considering that white is the color most preferred by the user as the color tone of the timepiece dial, it is advantageous in terms of sales. Further, when the colors of the decorative patterns A and B were changed to blue or black, pure blue or pure black could be expressed when actually manufactured, and the muddy color disappeared. As described above, the same effect can be obtained by using a colorless and transparent material for the translucent member 17, and sapphire glass or polyester may be used instead of the acrylic plate.

Next, in order to measure the power generation performance when this timepiece dial is used, the transmittance when direct light of a fluorescent lamp of 1000 lux was compared. The transmittance was compared when the light was directly emitted to the timepiece dial from the direction of arrow a, which is a right angle direction, and the direction of arrow b, which is an oblique direction. The direction of arrow b is shifted by 20 degrees from the direction of arrow a. When the printing color is white, the transmittance of light from the direction of arrow a is 70%.
The transmittance of light in the direction of arrow b was 85%. When the printing color is black, the transmittance of light from the direction of arrow a is 5
At 5%, the transmittance of light in the direction of arrow b was 70%. When the printing color was blue, the transmittance of light in the direction of arrow a was 60%, and the transmittance of light in the direction of arrow b was 75%. From the above, it was found that when light is applied to the timepiece dial from an oblique direction, the transmittance is improved, so that the power generation performance can be sufficiently secured as a whole.

In particular, when light is applied to the timepiece dial from an oblique direction, the transmittance is improved. This is because decoration of a timepiece faceplate for a solar-powered timepiece placed horizontally in a park or the like. It can be said to be advantageous.

The reason is that, in winter, the mid-south altitude of the sun is lower than in summer, so that direct sunlight tends to enter the timepiece dial from an oblique direction. Conversely, in the summer, the mid-south altitude of the sun is higher than in winter, so direct sunlight is less likely to enter the watch dial from an oblique direction, but the sunshine is stronger and the sunshine time is longer. This is because the incident light amount is covered.

If the decorative pattern A18 and the decorative pattern B19 are not the same color but different colors from each other, the decorative pattern A18 and the decorative pattern B19 can be rearranged upside down so that one part has a different face. Can make two models.

[First Embodiment of Clock Dial Decoration Part 2]
Further, as a first embodiment of the decoration, a light-transmitting member 1 is used.
No. 7 considers the case where a chromatic, transparent and natural material is used. As an example, a transparent pale amber polycarbonate is used. Using a plate having a thickness of 0.5 mm, a white lattice-like decorative pattern A18 is printed on the upper surface of the translucent member 17, and a white lattice-like decorative pattern B19 is printed on the lower surface of the translucent member 17. Is applied. Grid shape is 0.3
mm square, the grid pitch is 0.3 mm, and the printing thickness is 0.05 mm to 0.1 mm. Decorative pattern A18
If you want to give contrast to the decorative pattern B19
Use of a chromatic transparent natural material as the material of the translucent member 17 produces an effect. While the light is passing through the translucent member 17, the material is formed with a uniform refractive index, so that light is not diffusely reflected. Diffuse reflection of light occurs only when light passes through the decorative patterns A and B.

When the translucent member 17 is colorless and transparent, the diffuse reflection of light generated in the decorative pattern A and the diffuse reflection of light generated in the decorative pattern B appear almost to the human eye.
There is no difference in contrast. The difference is not seen in the contrast because the light traveling through the translucent member 17 is hardly absorbed even though there is a difference in the reflectance between the two lights.
This is probably because the naked eye determines that they are almost the same.

However, when the translucent member 17 is chromatic and transparent, the diffuse reflection of light generated by the decorative pattern A and the diffuse reflection of light generated by the decorative pattern B look very different to human eyes. Differences occur. The decorative pattern A looks bright and the decorative pattern B looks dark. The reflection of light generated by the decorative pattern A directly enters the naked eye. The light traveling through the translucent member 17 is absorbed on the way, and the light reflected by the decorative pattern B is also absorbed on the way, so that the decorative pattern B is higher than the decorative pattern A. Looks dark.

[First Embodiment of Clock Dial Decoration Part 3]
Further, as a third embodiment of the timepiece dial decoration, as a third example, the translucent member 17 is made of colorless and transparent sapphire glass, and the upper surface of the translucent member 17 is provided with a metal grid decorative pattern A18. Then, a metal lattice-shaped decorative pattern B19 is applied to the lower surface of the translucent member 17. Lattice shape is 0.3mm
A square with four sides, the thickness of the decorative pattern is 0.1μm ~ 0.1
mm.

First, it is preferable that the surfaces on both sides of the sapphire glass be polished and smoothed. Mirror finish is particularly good. This is to prevent the solar light from being irregularly reflected on the surface and improve the power generation performance.

Next, a metal lattice decorative pattern is formed on both sides using a sputtering apparatus. This is the arrow a
When viewed directly from the direction, the decorative pattern A18 has a metallic finish. In addition, since the joint surface between the decorative pattern B19 and the translucent member 17 is a mirror surface, when the light is reflected, gloss of a metal finish is seen. Therefore, the gloss of the metal finish can be seen on the entire surface of the timepiece dial 8.

Further, a three-dimensional decoration can be obtained by providing a concave portion on the surface of sapphire glass and applying a metal pattern to the concave portion.

Light required for power generation is incident on the timepiece dial 8 from the direction of arrow b. Since the joint surface between the decorative pattern and the light-transmitting member 17 is a mirror surface, the light-transmitting member 17
When light enters inside, it is also possible to use the bonding surface as a reflector. Since the scattered light at the bonding surface is reduced, energy can be efficiently supplied to the solar cell 13.

In particular, when the thickness of the decorative patterns A18 and B19 is 0.1 μm to 0.3 μm, sunlight can pass through the decorative patterns A18 and B19, and the power generation performance is improved. At the same time, it is possible to hide the crosshairs dividing the solar cell.

When the thickness of the decorative pattern is 0.1 μm or less, the power generation performance is improved, but the crosshairs obtained by dividing the solar cell can be seen through, and the appearance quality is impaired.

The sapphire glass can be subjected to various processes such as etching and sputtering as well as printing on the surface. Therefore, finishing with a precious metal such as gold, silver, or palladium can be performed to give a high-quality appearance to a timepiece dial. In addition, the multi-stage dividing line of the solar cell becomes invisible due to the metal finish, so that the appearance quality is improved. Furthermore, since the pressure resistance is higher than that of a plastic material or other inorganic glass, the translucent member 17 can be made thinner, and the timepiece dial can be made thinner, so that the design of the entire timepiece can be improved. Making the light-transmitting member 17 thinner can shorten the distance that sunlight travels through the light-transmitting member 17, thereby suppressing the light absorption and improving the power generation performance.

[First Embodiment of Clock Dial Decoration Part 4]
As the fourth embodiment 4 of the timepiece dial decoration, a light-transmissive member 17 such as quartz or calcite that generates birefringence of light is used.

On the upper surface of the translucent member 17, a metal lattice-like decorative pattern A18 is applied, and on the lower surface of the translucent member 17, a metal lattice-like decorative pattern B19 is applied. The grid shape is 0.
3mm square, the thickness of the decorative pattern is 0.1μm
To 0.1 mm.

First, it is preferable that the surface of quartz, calcite, or the like is polished and finished smoothly. Mirror finish is particularly good.
This is to prevent the solar light from being irregularly reflected on the surface and improve the power generation performance.

Next, a metal lattice decorative pattern is formed on both sides using a sputtering apparatus. This is the arrow a
When viewed directly from the direction, the decorative pattern A18 has a metallic finish. In addition, since the joint surface between the decorative pattern B19 and the translucent member 17 is a mirror surface, when the light is reflected, gloss of a metal finish is seen. Therefore, the gloss of the metal finish can be seen on the entire surface of the timepiece dial 8. At this time, the light that has entered the translucent member 17 from a portion where there is no decorative pattern A18 travels in two directions due to birefringence. If the light traveling in two directions is reflected by the joint surface between the decorative pattern B19 and the translucent member 17, both of the decorative patterns B19 appear double depending on the direct viewing direction of the timepiece dial 8, It may not look double. When the decorative pattern B19 looks doubly, light that has traveled in two directions has a phase difference, and thus looks three-dimensional with perspective. Furthermore, when combined with the case where the image does not look double, a decoration with a more three-dimensional appearance can be provided. Thus, a decoration with a three-dimensional appearance can be provided without making the surface of the translucent member 17 uneven.

[First Embodiment of Clock Dial Decoration, Part 5]
The first embodiment of the timepiece dial decorations 1 to 4 are appropriately combined to form the covering member 16.

A variety of colors, contrasts and textures can be provided, and the appearance quality of the timepiece dial can be improved.

<Second Embodiment of Clock Dial Decoration>
A second embodiment of the timepiece decoration will be described with reference to FIGS.

The feature of the dial decoration for a watch is that the decorative pattern A18 has three-dimensional decorative patterns 18a, 18b, and 18a.
c. 18d is a decorative pattern having a uniform thickness. The three-dimensional decorative pattern is provided on the entire or a part of the upper surface of the covering member 16. When viewed from the top of the timepiece dial (in the direction of arrow a), the decorative pattern A1
8 and the decorative pattern B19 may or may not have a portion overlapping in a plane. The translucent member 17 may or may not be a member having a uniform thickness.

The covering member 16 may be manufactured in the same manner as described in the first embodiment of the timepiece dial decoration.

The three-dimensional decorative patterns 18a, 18b, 1
8c may be machined by engraving or diamond cutting. This is because a variety of textures can be provided.

Further, the three-dimensional decorative patterns 18a, 18
b and 18c may be assembled by bonding or welding.

Further, three-dimensional decorative patterns 18a, 1a
The shapes of 8b and 18c are preferably expressed by various three-dimensional shapes such as a cone, a pyramid, a hemisphere, a disk, and a polyhedron.

The reason is that the path of sunlight can be controlled to improve the power generation performance.

For example, when the decorative patterns 18a and 18b are made of a material that can transmit light in the form of a quadrangular pyramid, the sunlight L travels straight from the upper surface of the timepiece dial (in the direction of arrow a) and is reflected by the decorative pattern 18a. It is split into light L1 and transmitted light L2. The transmitted light L2 passes through the covering member 16 and reaches the solar cell 14. The reflected light L1 reaches the decorative pattern 18b, and is split into reflected light L3 and transmitted light L4. Transmitted light L4
Penetrates the covering member 16 and reaches the solar cell 14. Since the reflected light L1 reflected once by the decorative pattern 18a is transmitted again, the input energy to the solar cell increases, and the power generation performance can be improved. When the sunlight L travels obliquely (in the direction of the arrow b), the light receiving area can be increased and the amount of light transmitted through the covering member 16 can be increased, so that the power generation performance is improved.

Further, if there is a three-dimensional decoration pattern,
When the sunlight L travels obliquely (in the direction of the arrow b), total reflection on the surface of the translucent member 17 can be prevented. This allows
The power generation performance can be improved by increasing the amount of incident light from the surface of the translucent member 17.

When the decorative pattern 18c has a convex lens shape as in the case of the decorative pattern 18c, the sunlight is condensed, so that the light can be prevented from reaching the multi-stage dividing line portion of the solar cell. Therefore, the multi-stage split line portion of the solar cell becomes difficult to see through, and the power generation performance can be improved. The fact that the multi-stage dividing line portion of the solar cell can be difficult to see through means that the covering member 16 can be made thinner, so that the entire timepiece dial can be made thinner and the design of the whole timepiece can be improved.

<Third embodiment of timepiece dial decoration>
A third example of the timepiece dial decoration will be described with reference to FIGS.

The feature of the timepiece dial decoration is that the decorative pattern A18 and the decorative pattern B19 have a planar overlap with each other.

As a result, the entire surface of the solar cell is covered.
The solar cell cannot be seen from the upper surface of the timepiece dial (in the direction of arrow a). Further, the solar cell is arranged so that the solar cell is not visible even when viewed obliquely (in the direction of arrow b). In the same manner as described in the first embodiment of the watch dial decoration,
The covering member 16 may be manufactured.

[Third Embodiment of Clock Dial Decoration Part 1]
Third Embodiment of Clock Dial Decoration As a first example, the translucent member 17 is made of colorless and transparent sapphire glass, and a metal lattice decorative pattern A18 is formed on the upper surface of the translucent member 17.
Then, a metal lattice-shaped decorative pattern B19 is provided on the lower surface of the translucent member 17. The lattice shape is a square of 0.3 mm square, and the thickness of the decorative pattern is 0.1 μm to 0.1 mm.

First, it is preferable that the surfaces on both sides of the sapphire glass be polished and finished smoothly. Mirror finish is particularly good. This is to prevent the solar light from being irregularly reflected on the surface and improve the power generation performance.

Next, a metal lattice decorative pattern is formed on both sides using a sputtering apparatus. This is the arrow a
When viewed directly from the direction, the decorative pattern A18 has a metallic finish. In addition, since the joint surface between the decorative pattern B19 and the translucent member 17 is a mirror surface, when the light is reflected, gloss of a metal finish is seen. Therefore, the gloss of the metal finish can be seen on the entire surface of the timepiece dial 8.

Further, a three-dimensional decoration can be obtained by providing a concave portion on the surface of sapphire glass and applying a metal pattern to the concave portion.

Light required for power generation is incident on the timepiece dial 8 from the direction of arrow b. Since the joint surface between the decorative pattern and the light-transmitting member 17 is a mirror surface, the light-transmitting member 17
When light enters inside, it is also possible to use the bonding surface as a reflector. Since the scattered light at the bonding surface is reduced, energy can be efficiently supplied to the solar cell 13.

[Third Embodiment of Clock Dial Decoration, Part 2]
In particular, when the thickness of the decorative patterns A18 and B19 is 0.1 μm to 0.3 μm, sunlight can pass through the decorative patterns A18 and B19, and the power generation performance can be improved. At the same time, it can hide the crosshairs that split the solar cell.

When the thickness of the decorative pattern is 0.1 μm or less, the power generation performance is improved, but the crosshairs obtained by dividing the solar cell can be seen through, and the appearance quality is impaired.

The sapphire glass can be subjected to various processes such as etching and sputtering as well as printing on the surface. Therefore, finishing with a precious metal such as gold, silver, or palladium can be performed to give a high-quality appearance to a timepiece dial. In addition, the multi-stage dividing line of the solar cell becomes invisible due to the metal finish, so that the appearance quality is improved. Furthermore, since the pressure resistance is higher than that of a plastic material or other inorganic glass, the translucent member 17 can be made thinner, the entire dial of the timepiece can be thinned, and the design of the entire watch can be improved. Making the light-transmitting member 17 thinner can shorten the distance that sunlight travels through the light-transmitting member 17, thereby suppressing the light absorption and improving the power generation performance.

<Fourth Embodiment of Clock Dial Decoration>
A fourth embodiment of the timepiece decoration will be described with reference to FIGS.

A feature of the dial decoration for a timepiece is that the decorative pattern A18 and the decorative pattern B19 do not have a planar overlap.

As a result, the solar cell can be partially viewed from the upper surface of the timepiece dial (in the direction of arrow a). The color tone of the solar cell element 13 can also be made rich in design variety by combining the decorative pattern A18 and the decorative pattern B19. In addition, if the decorative pattern A18 and the decorative pattern B19 are used in reverse, a model having two different faces can be created with one component. The covering member 16 may be manufactured in the same manner as described in the first embodiment of the timepiece dial decoration.

<Fifth embodiment of timepiece dial decoration>
A fifth embodiment of the timepiece dial decoration will be described with reference to FIGS.

The watch dial decoration is characterized by the translucent member 1.
7 is provided with a plurality of concave and convex portions 17a on the surface. The plurality of uneven portions 17a may be provided on one or both surfaces of the translucent member 17. By providing the plurality of uneven portions 17a, the light condensing area can be increased and the power generation performance can be improved. In addition, it is possible to create a three-dimensional decorative pattern and enrich the design variety.

When viewed from the upper surface of the timepiece dial (in the direction of arrow a), the decorative pattern A18 and the decorative pattern B19 may or may not have portions that overlap in a plane.
The covering member 16 may be manufactured in the same manner as described in the first embodiment of the timepiece dial decoration.

The plurality of uneven portions 17a may be machined by engraving or diamond cutting. This is because a variety of textures can be provided.

Further, the shape of the plurality of uneven portions 17a is preferably expressed in various three-dimensional shapes such as a cone, a pyramid, a hemisphere, a disk, and a polyhedron.

The reason is that it is possible to improve the power generation performance by controlling the course of sunlight.

For example, when the plurality of concave and convex portions 17a are made of a material that can transmit light in the form of a quadrangular pyramid, sunlight L travels straight from the upper surface of the timepiece dial (in the direction of arrow a), and , And reflected light L5 and transmitted light L6. The transmitted light L6 passes through the covering member 16 and reaches the solar cell 14. The reflected light L5 reaches the adjacent uneven portion 17a, and the reflected light L5
7 and transmitted light L8. The transmitted light L8 is applied to the covering member 1
6 to the solar cell 14. Multiple uneven portions 17
Since the reflected light L5 reflected once at a is transmitted again, the input energy to the solar cell increases,
Power generation performance can be improved.

Further, by providing a plurality of uneven portions 17a, total reflection on the surface of the translucent member 17 can be prevented when the sunlight L goes straight obliquely (in the direction of arrow b). Thereby, the amount of incident light from the surface of the translucent member 17 can be increased, and the power generation performance can be improved.

Further, when the plurality of concave / convex portions 17a have an upwardly convex lens shape, sunlight is condensed, so that light can be prevented from reaching the multi-stage dividing line portion of the solar cell. Therefore, the multi-stage split line portion of the solar cell becomes difficult to see through, and the power generation performance can be improved. In this way, the fact that the step dividing line portion is difficult to see through makes it possible to make the covering member 16 thinner, so that the thickness of the entire timepiece dial can be reduced, and the design of the entire timepiece can be improved.

<Sixth embodiment of timepiece dial decoration>
A sixth embodiment of the clock face decoration will be described with reference to FIG.

[0149] The feature of the dial decoration for a timepiece is that the decorative pattern A18 and the decorative pattern B19 are embedded in the translucent member 17.

In this case, one or both of the decorative pattern A18 and the decorative pattern B19 may or may not protrude from the surface of the translucent member.
When viewed from the top of the timepiece dial (in the direction of arrow a), the decorative pattern A18 and the decorative pattern B19 may or may not have portions that are planarly overlapped.

The decorative pattern A18 (decorative pattern B1
If 9) protrudes from the surface of the translucent member 17, a three-dimensional decorative pattern can be created.

If the decorative pattern A18 (decorative pattern B19) does not protrude from the upper surface (lower surface) of the translucent member 17, the timepiece dial 8 can be made thinner. In the same manner as described in the first embodiment of the watch dial decoration,
The covering member 16 may be manufactured.

[Sixth Embodiment of Clock Dial Decoration, Part 1]
Sixth Embodiment of Clock Dial Decoration As a first example, consider a case where a colorless and transparent acrylic plate is used for the translucent member 17 and a decorative pattern A18 and a decorative pattern B19 are printed with ink.

As the colorless and transparent acrylic plate, a plate having a thickness of about 0.3 mm to 0.5 mm is used in consideration of the strength in an actual use state. The lattice-shaped decorative pattern A is printed on the upper surface of the translucent member 17 by ink, and the lattice-shaped decorative pattern B is printed on the lower surface of the translucent member 17 by ink. Printing colors are white, black,
Three types of blue. The lattice shape is a square of 0.3 mm square, and the printing thickness is 0.05 mm to 0.1 mm. Also,
The parting diameter of the timepiece dial is 25 mm in diameter. In addition,
As a printing method, any method such as screen printing, offset printing, octopus printing, and UV (ultraviolet) printing may be used.

In actual production, the use of a colorless and transparent acrylic plate can express a pure white color more than the case of using a white translucent acrylic plate.
During the passage of light through the colorless and transparent plate material, the material is formed with a uniform refractive index, so that light is not diffusely reflected. Diffuse reflection of light occurs only when light passes through the decorative patterns A and B. On the other hand, when a white translucent plate material is used, since the material is not formed with a uniform refractive index, the light travels through the plate material while generating irregular reflection, so that it is gray or cloudy. It is thought that it becomes the color that I did. It is considered that the cause of the irregular reflection is a dye that dyes the acrylic plate white. Since the content of the white dye is unevenly scattered in the plate material, it is considered that diffused reflection easily occurs. Considering that white is the color most preferred by the user as the color tone of the timepiece dial, it is advantageous in terms of sales. Further, when the colors of the decorative patterns A and B were changed to blue or black, pure blue or pure black could be expressed when actually manufactured, and the muddy color disappeared. As described above, the same effect can be obtained by using a colorless and transparent material for the translucent member 17, and sapphire glass or polyester may be used instead of the acrylic plate.

Next, in order to measure the power generation performance when the timepiece dial was used, the transmittances when the light of a 1000 lux fluorescent lamp was directly irradiated were compared. The transmittance was compared when the light was directly emitted to the timepiece dial from the direction of arrow a, which is a right angle direction, and the direction of arrow b, which is an oblique direction. The direction of arrow b is shifted by 20 degrees from the direction of arrow a. When the printing color is white, the transmittance of light from the direction of arrow a is 70%.
The transmittance of light in the direction of arrow b was 85%. When the printing color is black, the transmittance of light from the direction of arrow a is 5
At 5%, the transmittance of light in the direction of arrow b was 70%. When the printing color was blue, the transmittance of light in the direction of arrow a was 60%, and the transmittance of light in the direction of arrow b was 75%. From the above, it was found that when light is applied to the timepiece dial from an oblique direction, the transmittance is improved, so that the power generation performance can be sufficiently secured as a whole.

In particular, when light is applied to the timepiece dial from an oblique direction, the transmittance is improved. This is because the watch faceplate for a solar-powered timepiece placed horizontally in a park or the like is decorated. It can be said to be advantageous.

The reason is that, in winter, the mid-south altitude of the sun is lower than in summer, so that direct sunlight tends to enter the timepiece dial from an oblique direction. Conversely, in the summer, the mid-south altitude of the sun is higher than in winter, so direct sunlight is less likely to enter the watch dial from an oblique direction, but the sunshine is stronger and the sunshine time is longer. This is because the incident light amount is covered.

If the decorative pattern A18 and the decorative pattern B19 are not the same color but different from each other, the decorative pattern A18 and the decorative pattern B19 can be rearranged upside down so that one part has a different face. Can make two models.

[Sixth Embodiment of Clock Dial Decoration Part 2]
Further, as a sixth embodiment of the decoration, a light-transmitting member 1 is provided.
No. 7 considers the case where a chromatic, transparent and natural material is used. As an example, a transparent pale amber polycarbonate is used. Using a plate having a thickness of 0.5 mm, a white lattice-like decorative pattern A18 is printed on the upper surface of the translucent member 17, and a white lattice-like decorative pattern B19 is printed on the lower surface of the translucent member 17. Is applied. Grid shape is 0.3
mm square, the grid pitch is 0.3 mm, and the printing thickness is 0.05 mm to 0.1 mm. Decorative pattern A18
If you want to give contrast to the decorative pattern B19
Use of a chromatic transparent natural material as the material of the translucent member 17 produces an effect. While the light is passing through the translucent member 17, the material is formed with a uniform refractive index, so that light is not diffusely reflected. Diffuse reflection of light occurs only when light passes through the decorative patterns A and B.

When the translucent member 17 is colorless and transparent, the diffuse reflection of light generated by the decorative pattern A and the diffuse reflection of light generated by the decorative pattern B appear to be almost identical to human eyes.
There is no difference in contrast. The difference is not seen in the contrast because the light traveling through the translucent member 17 is hardly absorbed even though there is a difference in the reflectance between the two lights.
This is probably because the naked eye determines that they are almost the same.

However, when the translucent member 17 is chromatic and transparent, the diffuse reflection of light generated by the decorative pattern A and the diffuse reflection of light generated by the decorative pattern B look very different to human eyes. Differences occur. The decorative pattern A looks bright and the decorative pattern B looks dark. The reflection of light generated by the decorative pattern A directly enters the naked eye. The light traveling through the translucent member 17 is absorbed on the way, and the light reflected by the decorative pattern B is also absorbed on the way, so that the decorative pattern B is higher than the decorative pattern A. Looks dark.

[Sixth Embodiment of Clock Dial Decoration, Part 3]
Further, as a sixth embodiment of the timepiece dial decoration, as a third example, the light-transmitting member 17 is made of colorless and transparent sapphire glass, and a metal grid-like decorative pattern A18 is formed on the upper surface of the light-transmitting member 17. Then, a metal lattice-shaped decorative pattern B19 is applied to the lower surface of the translucent member 17. Lattice shape is 0.3mm
A square with four sides, the thickness of the decorative pattern is 0.1μm ~ 0.1
mm.

First, it is preferable that the surfaces on both sides of the sapphire glass be polished and finished smoothly. Mirror finish is particularly good. This is to prevent the solar light from being irregularly reflected on the surface and improve the power generation performance.

Next, a metal lattice-shaped decorative pattern is formed on both sides using a sputtering apparatus. This is the arrow a
When viewed directly from the direction, the decorative pattern A18 has a metallic finish. In addition, since the joint surface between the decorative pattern B19 and the translucent member 17 is a mirror surface, when the light is reflected, gloss of a metal finish is seen. Therefore, the gloss of the metal finish can be seen on the entire surface of the timepiece dial 8.

A three-dimensional decoration can be obtained by providing a concave portion on the surface of sapphire glass and applying a metal pattern to the concave portion.

Light required for power generation is incident on the timepiece dial 8 in the direction of arrow b. Since the joint surface between the decorative pattern and the light-transmitting member 17 is a mirror surface, the light-transmitting member 17
When light enters inside, it is also possible to use the bonding surface as a reflector. Since the scattered light at the bonding surface is reduced, energy can be efficiently supplied to the solar cell 13.

In particular, when the thickness of the decorative patterns A18 and B19 is 0.1 μm to 0.3 μm, sunlight can pass through the decorative patterns A18 and B19, and the power generation performance is improved. At the same time, it is possible to hide the crosshairs dividing the solar cell.

When the thickness of the decorative pattern is 0.1 μm or less, the power generation performance is improved, but the crosshairs obtained by dividing the solar cell can be seen through, and the appearance quality is impaired.

The sapphire glass can be subjected to various processes such as etching and sputtering as well as printing on the surface. Therefore, finishing with a precious metal such as gold, silver, or palladium can be performed to give a high-quality appearance to a timepiece dial. In addition, the multi-stage dividing line of the solar cell becomes invisible due to the metal finish, so that the appearance quality is improved. Furthermore, since the pressure resistance is higher than that of a plastic material or other inorganic glass, the translucent member 17 can be made thinner, and the timepiece dial can be made thinner, so that the design of the entire timepiece can be improved. Making the light-transmitting member 17 thinner can shorten the distance that sunlight travels through the light-transmitting member 17, thereby suppressing the light absorption and improving the power generation performance.

[Sixth Embodiment of Clock Dial Decoration, Part 4]
As the fourth embodiment 4 of the timepiece dial decoration, a light-transmissive member 17 such as quartz or calcite that generates birefringence of light is used.

A metal lattice decorative pattern A18 is formed on the upper surface of the translucent member 17, and a metal lattice decorative pattern B19 is formed on the lower surface of the translucent member 17. The grid shape is 0.
3mm square, the thickness of the decorative pattern is 0.1μm
To 0.1 mm.

First, it is preferable that the surface of quartz, calcite, or the like be polished and finished to be smooth. Mirror finish is particularly good.
This is to prevent the solar light from being irregularly reflected on the surface and improve the power generation performance.

Next, a metal lattice decorative pattern is formed on both sides using a sputtering apparatus. This is the arrow a
When viewed directly from the direction, the decorative pattern A18 has a metallic finish. In addition, since the joint surface between the decorative pattern B19 and the translucent member 17 is a mirror surface, when the light is reflected, gloss of a metal finish is seen. Therefore, the gloss of the metal finish can be seen on the entire surface of the timepiece dial 8. At this time, the light that has entered the translucent member 17 from a portion where there is no decorative pattern A18 travels in two directions due to birefringence. If the light traveling in two directions is reflected by the joint surface between the decorative pattern B19 and the translucent member 17, both of the decorative patterns B19 appear double depending on the direct viewing direction of the timepiece dial 8, May not be visible. Thus, a decoration with a three-dimensional appearance can be provided without making the surface of the translucent member 17 uneven.

[Sixth Embodiment of Clock Dial Decoration, Part 5]
The covering member 16 is formed by appropriately combining the sixth to fourth embodiments of the timepiece decoration.

A variety of colors, contrast, and texture can be provided, and the appearance quality of the timepiece dial can be improved.

<Seventh embodiment of timepiece dial decoration>
A seventh embodiment of the timepiece decoration will be described with reference to FIG.

The watch dial decoration is characterized in that the light transmitting member is provided with a light collecting portion. A plurality of convex lens-shaped projections 17b are provided on the lower surface of the light transmitting member 17. As a result, the light-condensing density on the solar cell element 13 can be increased, and the power generation performance can be improved. In the case of a downward convex lens shape, sunlight is condensed, so that light can be prevented from reaching the multi-stage dividing line portion of the solar cell. Therefore, it becomes difficult to see through the multi-stage dividing line portion of the solar cell,
And the power generation performance can be improved. in this way,
The fact that the step dividing line portion is difficult to see through makes it possible to make the covering member 16 thin, so that the thickness of the entire timepiece dial can be reduced, and the design of the entire timepiece can be improved. The covering member 16 may be manufactured in the same manner as described in the first embodiment of the timepiece dial decoration. When viewed from the top of the timepiece dial (in the direction of arrow a), the decorative pattern A18
And the decorative pattern B19 may or may not have a portion overlapping in a plane.

If the translucent member 17 is used upside down, it becomes the same as the fifth embodiment of the timepiece dial decoration.

(Second Embodiment) As shown in FIG. 9, in addition to the first embodiment of the present invention, a solar cell is placed on the opposite side (Urabuta side) of the timepiece dial 8 and the watch It has the same decoration as the dial 8. The decoration on the Urabuta side is
The same thing as the contents described in the first to seventh embodiments of the timepiece dial decoration may be applied.

Reference numeral 101 denotes a back fixing ring which is fixed to the outer case 1. Reference numeral 102 denotes a middle frame which positions the timepiece driving movement 4 and the outer case 1, and positions and fixes the solar cell unit 100. The solar cell unit 100 includes a substrate 109, an insulating film 110,
It has a laminated structure of an electrode film 111, a solar cell 112, and a transparent electrode 113. An insulating film 110 is provided on a substrate 109, and an electrode film 111 is provided thereon.
2 are placed one on top of the other, and the transparent electrode 113 covers the two. The manufacturing process of the solar cell unit 100 may be the same as the timepiece dial 8 described in the first embodiment of the present invention. A covering member 103 is arranged on the upper part of the solar cell unit 100, and is positioned in a vertical direction by a back fixing ring 101. 108 is a waterproof packing.

In the covering member 103, the decorative pattern A105 is provided on the solar cell unit 100 side of the translucent member 104, and the decorative pattern B106 is provided on the opposite side. The decorative pattern A105 is partially covered on the upper surface of the translucent member 104 so that light can be collected. The decorative pattern B <b> 106 is partially covered on a surface opposite to the solar cell unit 100 so that light can reach the solar cell 112. The decorative pattern A105 is preferably arranged at a position lower than the upper fixing ring 101. The surface of the decorative pattern A105 is prevented from being rubbed and the appearance quality is prevented from deteriorating.
It is possible to prevent the surface of No. 4 from being damaged and the power generation performance from being reduced due to scattering of incident light. Covering member 10
For the decoration of the three surfaces, the same method as that described in the first embodiment is used. The decoration on the opposite side of the clock face can also be varied.

Here, the reason why the solar cell is arranged on the opposite side of the timepiece dial will be described.

Considering the actual state of use, it is conceivable that when the watch is removed from the wrist, the timepiece dial is placed down and left unattended. In this case, the power generation efficiency of the solar cell is excellent, and the power may not be generated even if the clock is placed in a place where the light shines. Therefore, if decoration is performed while arranging solar cells on the opposite side of the clock dial, no matter how the watch is left in any posture, if the watch is placed in the light, the power will always be generated. Is performed. If the clock face is placed on the lower side, light energy can be obtained from the opposite side to generate electricity.

(Third Embodiment) As shown in FIG.
In addition to the first embodiment of the present invention, a decoration similar to that of the timepiece dial 8 is provided while arranging a solar cell in a portable band. The decoration of the shape band is the first of the watch dial decorations.
The same contents as those described in the embodiments to the seventh embodiment may be applied.

A portable band 200 can be bent.
201 is a portable band base frame made of a bendable material such as a synthetic resin or a thin metal plate. A solar cell unit 208 is fixed on the portable band base frame 201 by a method such as bonding or caulking. Solar cell unit 20
8 comprises a substrate 202 and a solar cell 203;
Numeral 02 is made of a curable film resin, on which a solar cell 203 is provided. Solar cell unit 208
Since a gap is provided between the cover member 204 and the cover member 204, even if the cover member 204 bends due to an external impact or the like, the solar cell 203 is not directly hit. The covering member 204 includes a decorative pattern A2 on the upper surface of the light transmitting member 206.
The decorative pattern B 207 is provided on the lower surface of the translucent member 206. Decorative pattern A205
Is a light-transmitting member 206 so that light can be collected.
Is partially covered on the upper surface of the. Decorative pattern B20
7 is partially covered on the lower surface of the translucent member 206 so that light can reach the solar cell 203. For decoration of the surface of the covering member 204, the same method as that described in the first embodiment is used. Clock dial 8
Since the decoration of the portable band 200 as well as the decoration of the watch is performed, the appearance of the finished product as a watch product can be improved.

Here, the reason why the solar cell is arranged in the portable band will be described.

In consideration of the actual use state, there are two main states in which the watch is carried on the wrist. One is a state in which the timepiece dial is facing the back of the hand. The other case is when the clock face is fitted with the palm facing. Considering the photovoltaic power generation, the former can be said to have higher power generation efficiency. In the latter case, the timepiece dial is hidden behind the arm, making it difficult to receive light. In particular, when performing desk work, the windshield of the watch hits the upper surface of the desk, making it difficult for light to enter the timepiece dial. Therefore, if a solar cell is also provided in a portable band, power can be generated in both the former and the latter. Since the portable band is curved, even if the arm is rotated, light is received at any place of the portable band, and the power generation efficiency can be improved.

(Fourth Embodiment) As shown in FIG.
In addition to the first embodiment of the present invention, the same decoration as that of the timepiece dial 8 is applied to the opposite side (the side of the watch) and the portable band of the timepiece dial while arranging solar cells.

[0190] On the other side (side of the watch) of the timepiece dial,
Since the structure in which the solar cells are arranged is the same as that of the second embodiment, the description is omitted. The same decoration as that described in the first to seventh embodiments of the timepiece dial decoration may be applied to the decoration on the side of the watch.

The structure in which the solar cell is arranged in the portable band is the same as that of the third embodiment, and the description is omitted. The decoration of the portable band may be the same as the contents described in the first to seventh embodiments of the watch dial decoration.

As compared with the second embodiment and the third embodiment, the mounting area of the solar cell is further increased, so that the power generation performance can be further improved. In particular, the power generation performance in the state where it is removed from the arm is the highest.

Although the embodiment has been described using an electronic timepiece in the present invention, a calculator with a solar cell, an electronic organizer,
Various modifications can be applied to electronic devices such as a liquid crystal display device without departing from the present invention.

[0194]

As described above, according to the present invention, in an electronic device having a covering member for covering the upper surface of a solar cell,
It is possible to improve the appearance (improve the appearance) without lowering the power generation performance.

[Brief description of the drawings]

FIG. 1 is a sectional view of an electronic timepiece with a solar cell according to a first embodiment of the present invention.

FIG. 2 is a sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a first example of a timepiece dial decoration;

FIG. 3 is a plan view of a timepiece dial of the electronic timepiece with a solar cell according to the first embodiment of the present invention, and is a first example of a timepiece dial decoration;

FIG. 4 is a cross-sectional view of the timepiece dial of the electronic timepiece with a solar cell according to the first embodiment of the present invention, which is a second example of watch faceplate decoration.

FIG. 5 is a plan view of a timepiece dial of the electronic timepiece with a solar cell according to the first embodiment of the present invention, which is a second example of a timepiece dial decoration;

FIG. 6 is a cross-sectional view of the timepiece dial of the electronic timepiece with a solar cell according to the first embodiment of the present invention, which is a third example of the watch faceplate decoration.

FIG. 7 is a plan view of a timepiece dial of the electronic timepiece with a solar cell according to the first embodiment of the present invention, and is a third example of the timepiece dial decoration.

FIG. 8 is a cross-sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a fourth example of watch faceplate decoration.

FIG. 9 is a plan view of a timepiece dial of the electronic timepiece with a solar cell according to the first embodiment of the present invention, and is a fourth example of the timepiece dial decoration.

FIG. 10 is a cross-sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a fifth example of watch faceplate decoration.

FIG. 11 is a plan view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a fifth example of watch faceplate decoration.

FIG. 12 is a cross-sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a sixth example of watch faceplate decoration.

FIG. 13 is a cross-sectional view of a timepiece dial of an electronic timepiece with a solar cell according to a first embodiment of the present invention, which is a seventh example of watch faceplate decoration.

FIG. 14 is a sectional view of an electronic timepiece with a solar cell according to a second embodiment of the present invention.

FIG. 15 is a sectional view of an electronic timepiece with a solar cell according to a third embodiment of the present invention.

FIG. 16 is a sectional view of an electronic timepiece with a solar cell according to a fourth embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer case 2 Windshield 3 Urabuta 4 Movement for clock driving 5 Hour hand 6 Minute hand 7 Second hand 8 Clock dial 9 Foot 10, 109, 202 Substrate 11, 110 Insulating film 12, 111 Electrode film 13, 112, 203 Solar cell 14, 113 Transparent electrode 15 Spacer 16, 103, 203 Covering member 17, 104, 206 Translucent member 18, 105, 205 Decorative pattern A 19, 106, 207 Decorative pattern B 100, 208 Solar cell unit

Claims (17)

[Claims] 1. A covering member for covering an upper part of a solar cell. 2) The covering member is arranged so as to partially cover: a) a translucent member; and b) an upper surface of the translucent member. The decorative pattern A provided; c) a decorative pattern B disposed so as to partially cover the lower surface of the translucent member; d) the decorative pattern A and the decorative pattern B
A covering member for covering an upper surface of the solar cell, which is provided so as to cover the solar cell. 2. The covering member for covering an upper surface of a solar cell according to claim 1, wherein the decorative pattern A and the decorative pattern B cover the entire surface of the solar cell by planar superposition. 3. The covering member for covering an upper surface of a solar cell according to claim 1, wherein the decorative pattern A and the decorative pattern B are arranged at positions not overlapping with each other in a plane. 4. The covering member for covering an upper surface of a solar cell according to claim 1, wherein the decorative pattern A and the decorative pattern B partially cover the upper part of the solar cell by planar overlapping. 5. The covering member according to claim 1, wherein one or both of the decorative pattern A and the decorative pattern B are embedded in a translucent member. 6. The covering member for covering the upper surface of a solar cell according to claim 1, wherein the translucent member has a plurality of uneven portions on one or both of its surfaces. 7. The covering member according to claim 1, wherein the decorative pattern A is a three-dimensional decorative pattern. 8. The covering member for covering the upper surface of a solar cell according to claim 1, wherein said translucent member is colorless and transparent. 9. The covering member for covering an upper surface of a solar cell according to claim 1, wherein the light transmitting member is colored and transparent. 10. The covering member for covering an upper surface of a solar cell according to claim 1, wherein the translucent member generates birefringence of light. 11. The covering member for covering the upper surface of a solar cell according to claim 1, wherein one or both of the decorative pattern A and the decorative pattern B are made of metal. 12. The decorative pattern A and the decorative pattern B according to claim 11, wherein the metal thickness of the decorative pattern A and the decorative pattern B is 0.1 μm to 0.3 μm.
The covering member according to claim 1, wherein the covering member covers the upper surface of the solar cell. 13. An electronic device with a solar cell, wherein the covering member for covering the upper surface of the solar cell according to at least one of claims 1 to 12 is used for an electronic device display unit. 14. An electronic device with a solar cell, wherein the covering member for covering the upper surface of the solar cell according to at least one of claims 1 to 12 is used for an electronic device display portion and a back side of the electronic device. 15. An electronic device equipped with a solar cell, wherein the covering member for covering the upper surface of the solar cell according to at least one of claims 1 to 12 is used for an electronic device display portion and a portable band thereof. 16. A solar cell, wherein the covering member for covering the upper surface of the solar cell according to at least one of claims 1 to 12 is used for an electronic device display portion, an electronic device back side, and a portable band thereof. With electronic equipment. 17. A timepiece with a solar battery, wherein the electronic device with a solar battery according to at least one of claims 13 to 16 is an electronic timepiece.