JPH1138158A - Dial for time piece - Google Patents

Dial for time piece

Info

Publication number
JPH1138158A
JPH1138158A JP21018797A JP21018797A JPH1138158A JP H1138158 A JPH1138158 A JP H1138158A JP 21018797 A JP21018797 A JP 21018797A JP 21018797 A JP21018797 A JP 21018797A JP H1138158 A JPH1138158 A JP H1138158A
Authority
JP
Japan
Prior art keywords
light guide
plate
light
guide plate
solar cell
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP21018797A
Other languages
Japanese (ja)
Other versions
JP3533071B2 (en
Inventor
Masaaki Sato
正昭 佐藤
Masaaki Watanabe
正明 渡辺
Toshio Hosoya
利男 細谷
Nobuo Ito
信夫 伊東
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Citizen Watch Co Ltd
Kawaguchiko Seimitsu KK
Original Assignee
Citizen Watch Co Ltd
Kawaguchiko Seimitsu KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Citizen Watch Co Ltd, Kawaguchiko Seimitsu KK filed Critical Citizen Watch Co Ltd
Priority to JP21018797A priority Critical patent/JP3533071B2/en
Publication of JPH1138158A publication Critical patent/JPH1138158A/en
Application granted granted Critical
Publication of JP3533071B2 publication Critical patent/JP3533071B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PROBLEM TO BE SOLVED: To widen the selection range of material usable for indication plate and enable fabricating a highly ornamental indication plate by arranging a light guide plate between the indication plate and a solar battery layer and irradiating the solar battery layer with light guided by this light guide plate. SOLUTION: The dial for time piece M is arranged via support legs on a movement 1 and on a solar battery layer 6 provided on a substrate 5 in the center of which, a hole wherein a hand shaft 3 penetrates, is provided, and constituted of the light guide plate 7 and the indication plate 9 having hour digits 8 arranged in one on the light guide plate 7. The light guide plate 7 is formed out of a disk shape acrylic plate having a recess part where the indication plate 9 couples in and on the upper surface of the outer wall of the recess part, a light guide surface guiding external light into the light guide plate 7 is formed on the whole circle. On the bottom, inner surface and the outer side of the outer surface of the recess part, a reflection film 12 is formed so that the light guided from the light guide surface 11 is dispersed inside with the reflection film 12.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は、腕時計などの文字
板に係り、特に太陽電池を用いた時計の文字板に関する
ものである。
The present invention relates to a dial for a wristwatch or the like, and more particularly to a dial for a timepiece using a solar cell.

【0002】[0002]

【従来の技術】自然光を光源とする太陽電池は時計の電
源として広く利用されているが、太陽電池の表面が独特
の濃紫色をしているため、装飾性の面で問題となる場合
がある。このため、従来にあっては文字板等の表示部に
着色や模様を施したりして太陽電池特有の濃紫色を目立
たなくすることが行われている。
2. Description of the Related Art A solar cell using natural light as a light source is widely used as a power source for a timepiece. However, since the surface of the solar cell has a unique dark purple color, there may be a problem in terms of decorativeness. . For this reason, in the related art, coloring or patterning is applied to a display portion such as a dial to make the dark purple color peculiar to a solar cell inconspicuous.

【0003】このような太陽電池の濃紫色を目立たせな
くする技術としては、例えば、特開平7−244174
号公報に開示されたものがある。これは、時字等が形成
された表示板にセラミック材を用い、さらにこのセラミ
ック材に凸部や凹溝等を形成して模様調としたものであ
る。白色系のセラミック材を用いることで太陽電池の濃
紫色を目立たせなくすることができ、また表面に凸部や
凹溝等を形成することで装飾効果を上げることができ
る。
As a technique for making the deep purple color of a solar cell inconspicuous, for example, Japanese Unexamined Patent Publication No. 7-244174 discloses a technique.
Is disclosed in Japanese Patent Application Laid-Open Publication No. HEI 9-203 (1995). In this method, a ceramic material is used for a display plate on which a time character or the like is formed, and further, a convex portion, a concave groove, or the like is formed in the ceramic material to give a pattern tone. By using a white ceramic material, the deep purple color of the solar cell can be made inconspicuous, and a decorative effect can be enhanced by forming a convex portion or a concave groove on the surface.

【0004】また、その他の従来技術としては、セラミ
ック材の代わりに着色された透光性樹脂基板を表示板と
して用い、太陽電池の濃紫色を和らげたものも多く使用
されている。
As another conventional technique, a solar cell in which a colored translucent resin substrate is used as a display panel instead of a ceramic material to reduce the dark purple color of a solar cell is often used.

【0005】[0005]

【発明が解決しようとする課題】しかしながら、上記の
ように白色系のセラミック材や有色の透光性樹脂材を使
用することで太陽電池層の濃紫色を目立たせなくするこ
とができるものの、反対に太陽電池層の受光面積及び光
の透過率が減少してしまうという問題点がある。
However, by using a white ceramic material or a colored translucent resin material as described above, the dark purple color of the solar cell layer can be made inconspicuous. In addition, there is a problem that the light receiving area and light transmittance of the solar cell layer decrease.

【0006】また、太陽電池層の上面に配置される表示
板の材質としては、光の透過性を備える白色系のセラミ
ック材や透光性樹脂基板に限られてしまい、加工が容易
でしかも装飾性に富んだ金属板は、光の透過率が悪いた
めに使用することができないなど、材料選択に制約を受
けていた。
Further, the material of the display panel disposed on the upper surface of the solar cell layer is limited to a white ceramic material or a translucent resin substrate having a light transmitting property. A metal plate having a high property has been limited in material selection, for example, cannot be used because of poor light transmittance.

【0007】そこで本発明は、導光板を利用して太陽電
池層に光を導くようにすることで、表示板として使用で
きる材質の選択の幅を広げるとともに、装飾性の高い表
示板の加工を可能としたものである。
Accordingly, the present invention provides a light guide plate for guiding light to a solar cell layer, thereby expanding the range of choices of materials that can be used as a display plate and processing a display plate with high decorativeness. It was made possible.

【0008】[0008]

【課題を解決するための手段】上記課題を解決するため
に、本発明の請求項1に係る時計用文字板は、表示板と
太陽電池層との間に導光板を配置し、この導光板によっ
て導かれた光で太陽電池層を照射したことを特徴とす
る。
According to a first aspect of the present invention, there is provided a timepiece dial according to the present invention, wherein a light guide plate is disposed between a display plate and a solar cell layer. The solar cell layer is irradiated with the light guided by the above.

【0009】また、本発明の請求項2に係る時計用文字
板は、前記導光板内に外光を導くための導光面を表示板
の外周に沿って設けたことを特徴とする。
A timepiece dial according to a second aspect of the present invention is characterized in that a light guide surface for guiding external light into the light guide plate is provided along an outer periphery of the display plate.

【0010】また、本発明の請求項3に係る時計用文字
板は、前記導光板内に外光を導くための導光面を表示板
の時字形成部分に設けたことを特徴とする。
The timepiece dial according to a third aspect of the present invention is characterized in that a light guide surface for guiding external light into the light guide plate is provided at a time-character forming portion of the display plate.

【0011】また、本発明の請求項4に係る時計用文字
板は、前記導光板に太陽電池層の受光面と対向する反射
層を設けたことを特徴とする。
The timepiece dial according to claim 4 of the present invention is characterized in that the light guide plate is provided with a reflection layer facing the light receiving surface of the solar cell layer.

【0012】また、本発明の請求項5に係る時計用文字
板は、前記導光板に太陽電池層の受光面に近接した位置
にプリズム面を設けたことを特徴とする。
A timepiece dial according to a fifth aspect of the present invention is characterized in that the light guide plate is provided with a prism surface at a position close to a light receiving surface of a solar cell layer.

【0013】[0013]

【発明の実施の形態】以下添付図面に基づいて本発明に
係る時計用文字板の実施の形態を詳細に説明する。図1
及び図2は、本発明の第1実施例を示したものである。
この実施例に係る時計用文字板Mは、ムーブメント1の
上に支持脚2を介して配置され、中心部には指針軸3が
貫通する穴4が設けられている基板5上に設けられた太
陽電池層6の上に配設されて、導光板7とこの導光板7
に一体的に配設された時字8を有する表示板9とで構成
される。尚、基板5のムーブメント1への固定は、上記
支持脚2による方式と、基板5とムーブメント1とを支
持枠により挟持する方式とがある。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a timepiece dial according to the present invention will be described below in detail with reference to the accompanying drawings. FIG.
FIG. 2 shows a first embodiment of the present invention.
The timepiece dial M according to this embodiment is disposed on a movement 1 via a support leg 2, and is provided on a substrate 5 provided with a hole 4 through which a pointer shaft 3 is provided at the center. The light guide plate 7 and the light guide plate 7 are disposed on the solar cell layer 6.
And a display plate 9 having a time character 8 which is provided integrally with the display panel 9. The fixing of the substrate 5 to the movement 1 includes a method using the support legs 2 and a method in which the substrate 5 and the movement 1 are sandwiched by a support frame.

【0014】導光板7は、図2に示したように、前記表
示板9が嵌まり込む凹部10が形成された円板状のアク
リル板で構成され、凹部10の外周壁の上面には導光板
7の内部に外光を導き入れる導光面11が全周に亘って
形成されている。また、凹部10の底面と内周面及び外
周壁の外側面には反射膜12が形成されており、導光面
11から導き入れた光を反射膜12によって内部に分散
させている。これにより、導入した光が外部に漏れるこ
となく、効率よく太陽電池層6に照射することができ
る。反射膜12には、反射率の高い銀、アルミ二ウム、
酸化チタン等を使用することができる。
As shown in FIG. 2, the light guide plate 7 is formed of a disc-shaped acrylic plate having a concave portion 10 into which the display plate 9 is fitted. A light guide surface 11 for guiding external light is formed in the light plate 7 over the entire circumference. In addition, a reflection film 12 is formed on the bottom surface of the recess 10, the inner peripheral surface, and the outer surface of the outer peripheral wall, and the light guided from the light guide surface 11 is dispersed inside by the reflective film 12. Thereby, the solar cell layer 6 can be efficiently irradiated without the introduced light leaking to the outside. The reflective film 12 has silver, aluminum,
Titanium oxide or the like can be used.

【0015】この導光板7にはその外周部に2箇所の突
起部18を有し、この突起部18が時計ケースの内部に
配設されてムーブメント1を固定する支持枠に係合して
固定され(図省略)、太陽電池層6上に固定的に配設さ
れる。
The light guide plate 7 has two projections 18 on the outer periphery thereof. The projections 18 are disposed inside the watch case and engaged with and fixed to a support frame for fixing the movement 1. (Not shown) and fixedly disposed on the solar cell layer 6.

【0016】表示板9は、前記導光板7の凹部10に嵌
まり込んで導光板7と一体に固定される。この実施例で
の表示板9は、光の透過性を必要としないから、従来の
樹脂板やセラミック板に加えて金属板など光をほとんど
透過しない材質でも選択することができる。また、樹脂
板やセラミック板を使用する場合でも従来のような制約
はなくなる。、表示板9として反射率の高い金属板を
使用した場合には、前記反射膜12を設けたと同様の効
果がある。
The display plate 9 fits into the recess 10 of the light guide plate 7 and is fixed integrally with the light guide plate 7. Since the display plate 9 in this embodiment does not require light transmittance, a material that hardly transmits light, such as a metal plate, can be selected in addition to a conventional resin plate or ceramic plate. Further, even when a resin plate or a ceramic plate is used, the conventional restriction is eliminated. When a metal plate having a high reflectance is used as the display plate 9, the same effect as when the reflective film 12 is provided can be obtained.

【0017】このように、太陽電池層6と表示板9との
間に導光板7を挟み込んだ構成となり、文字板Mは表示
板9の上面と導光板7の導光面11とが同一平面上で滑
らかにつながり、そして、導光面11に入射した外光1
3は、反射膜12で内部分散されながら導光板7の内部
に進み、導光板7の真下に配設された太陽電池層6の受
光面14を一様に照射する。
As described above, the light guide plate 7 is sandwiched between the solar cell layer 6 and the display plate 9, and the dial M has the upper surface of the display plate 9 and the light guide surface 11 of the light guide plate 7 on the same plane. External light 1 which is smoothly connected on the upper side and is incident on the light guide surface 11
Numeral 3 travels inside the light guide plate 7 while being internally dispersed by the reflection film 12, and uniformly irradiates the light receiving surface 14 of the solar cell layer 6 disposed immediately below the light guide plate 7.

【0018】図3は本発明の第2実施例を示したもので
ある。この実施例は、上述の導光板7の下面全体にプリ
ズム面15を加工したものである。腕時計用して利用す
る場合、プリズム面15の角度は約70〜110度のも
のが良く、最適なものとして約90〜100度、ピッチ
は30〜50μmが望ましい。尚、プリズム面15は、
アクリル板に直接加工するか、又はプリズム面が形成さ
れたレンズフィルムを導光板7に貼り付けてもよい。
FIG. 3 shows a second embodiment of the present invention. In this embodiment, the prism surface 15 is formed on the entire lower surface of the light guide plate 7 described above. When used for a wristwatch, the angle of the prism surface 15 is preferably about 70 to 110 degrees, and most preferably about 90 to 100 degrees and the pitch is preferably 30 to 50 μm. The prism surface 15 is
It may be processed directly on an acrylic plate, or a lens film having a prism surface may be attached to the light guide plate 7.

【0019】このように、太陽電池層6の受光面14の
近くにプリズム面15を配したので、光の分散面積が増
えると同時に、光がより集光されて太陽電池層6の受光
面14への照射量が増し、より多くの発電量を得ること
ができる。
As described above, since the prism surface 15 is disposed near the light receiving surface 14 of the solar cell layer 6, the light dispersion area is increased, and at the same time, the light is more concentrated and the light receiving surface 14 of the solar cell layer 6 is formed. The amount of irradiation to the substrate increases, and more power generation can be obtained.

【0020】図4は本発明の第3実施例を示したもので
ある。この実施例は、表示板9に形成される時字8の下
部に開孔を設け、この開孔部分に対応して導光板7に突
起部16を形成し、開孔に突起部16を嵌め入れたもの
である。この突起部16の形状は特に限定されないが、
例えば時字8の最大長さを直径とする円柱状体、又は時
字8の最大長さを一辺とする角柱状体である。表示板9
の表面と突起部16の上面とを同一平面とすることで、
突起部16の上面が外光13の導光面11となり、時字
8の隙間から外光13が導かれる。尚、上記実施例と同
様、導光板7には表示板9の下面と接する面及び突起部
16の外周面に反射膜12が形成されている。
FIG. 4 shows a third embodiment of the present invention. In this embodiment, an opening is provided in the lower part of the time character 8 formed in the display plate 9, a projection 16 is formed in the light guide plate 7 corresponding to the opening, and the projection 16 is fitted in the opening. It is what you put. Although the shape of the projection 16 is not particularly limited,
For example, it is a cylindrical body having a maximum length of the hour character 8 as a diameter, or a prismatic body having a maximum length of the hour character 8 on one side. Display board 9
And the upper surface of the projection 16 are flush with each other,
The upper surface of the protrusion 16 serves as the light guide surface 11 of the external light 13, and the external light 13 is guided from the gap of the hour character 8. As in the above embodiment, the light guide plate 7 is provided with a reflective film 12 on the surface in contact with the lower surface of the display plate 9 and on the outer peripheral surface of the projection 16.

【0021】従って、この実施例では表示板9に形成さ
れた12個所の時字8部分から導光面11に外光13が
入射し、先の実施例と同様、入射した外光13は導光板
7の反射膜12によって内部分散し、その真下に配され
た太陽電池層6の受光面14を集中的に照射する。
Therefore, in this embodiment, external light 13 is incident on the light guide surface 11 from the twelve time-characters 8 formed on the display panel 9, and the incident external light 13 is guided as in the previous embodiment. It is internally dispersed by the reflection film 12 of the light plate 7 and irradiates the light receiving surface 14 of the solar cell layer 6 disposed directly thereunder intensively.

【0022】[0022]

【発明の効果】以上説明したように、本発明に係る時計
用文字板によれば、表示板の下面と太陽電池層との間に
導光板を配置し、この導光板によって導かれた光で太陽
電池層を照射し、時計としての動作上十分な発電量を確
保するようにしたから、表示板の材質に制約を受けるこ
とがなくなり、従来は太陽電池駆動方式の時計の表示板
として使用されなかった金属板なども利用することがで
き、文字板に豊富なデザイン形成が可能となる。
As described above, according to the timepiece dial of the present invention, the light guide plate is disposed between the lower surface of the display plate and the solar cell layer, and the light guided by the light guide plate is used. By irradiating the solar cell layer to ensure a sufficient amount of power generation for operation as a watch, there is no restriction on the material of the display panel, and it is conventionally used as a display panel for solar cell driven watches. Metal plates and the like that were not available can also be used, and abundant designs can be formed on the dial.

【0023】また、前記導光板には太陽電池層と対向す
るように反射膜を設けたので、導光板内に導入された光
の反射効率がよく、また光を外部に漏らすことがないの
で、太陽電池層に集中的に照射することができる。
Further, since the light guide plate is provided with a reflection film so as to face the solar cell layer, the light introduced into the light guide plate has a high reflection efficiency and does not leak light to the outside. Irradiation can be concentrated on the solar cell layer.

【0024】さらに、光を導く導光面を表示板の外周部
又は時字の形成位置に設けることで、太陽電池の表面の
濃紫色が見えにくく、装飾性の高い時計用文字板を形成
することができる。
Further, by providing a light guiding surface for guiding light at the outer peripheral portion of the display panel or at the position where the hour character is formed, it is difficult to see the deep purple color of the surface of the solar cell, thereby forming a highly decorative timepiece dial. be able to.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明に係る時計用文字板の第1実施例を示す
断面図である。
FIG. 1 is a sectional view showing a first embodiment of a timepiece dial according to the present invention.

【図2】本発明に係る時計用文字板の第1実施例を示す
斜視図である。
FIG. 2 is a perspective view showing a first embodiment of the timepiece dial according to the present invention.

【図3】本発明に係る時計用文字板の第2実施例を示す
断面図である。
FIG. 3 is a sectional view showing a second embodiment of the timepiece dial according to the present invention.

【図4】本発明に係る時計用文字板の第3実施例を示す
断面図である。
FIG. 4 is a sectional view showing a third embodiment of the timepiece dial according to the present invention.

【符号の説明】[Explanation of symbols]

M 文字板 6 太陽電池層 7 導光板 8 時字 9 表示板 11 導光面 12 反射膜 13 外光 14 受光面 M dial plate 6 solar cell layer 7 light guide plate 8 hour character 9 display plate 11 light guide surface 12 reflective film 13 external light 14 light receiving surface

───────────────────────────────────────────────────── フロントページの続き (72)発明者 細谷 利男 山梨県南都留郡河口湖町船津6663番地の2 河口湖精密株式会社内 (72)発明者 伊東 信夫 東京都田無市本町6丁目1番12号 シチズ ン時計株式会社田無製造所内 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Toshio Hosoya, 2666-3, Funatsu, Kawaguchiko-machi, Minamitsuru-gun, Yamanashi Prefecture Inside Kawaguchiko Seimitsu Co., Ltd. (72) Nobuo Ito 6-11-12, Honcho, Tanashi-shi, Tokyo Citizen Watch Corporation Tanashi Factory

Claims (5)

【特許請求の範囲】[Claims] 【請求項1】 太陽電池層を有し、その太陽電池層の上
方に配置されて時字等が形成される表示板なる時計用文
字板において、 前記表示板と太陽電池層との間に導光板を表示板と一体
的に配設し、この導光板によって導かれた光で太陽電池
層を照射したことを特徴とする時計用文字板。
1. A timepiece dial having a solar cell layer and being disposed above the solar cell layer to form a time character or the like, wherein a timepiece is formed between the display panel and the solar cell layer. A timepiece dial, wherein a light plate is provided integrally with a display plate, and the solar cell layer is irradiated with light guided by the light guide plate.
【請求項2】 前記導光板内に外光を導くための導光面
を表示板の外周に沿って設けたことを特徴とする請求項
1記載の時計用文字板。
2. The timepiece dial according to claim 1, wherein a light guide surface for guiding outside light into the light guide plate is provided along an outer periphery of the display plate.
【請求項3】 前記導光板内に外光を導くための導光面
を表示板の時字形成部分に設けたことを特徴とする請求
項1記載の時計用文字板。
3. The timepiece dial according to claim 1, wherein a light guide surface for guiding external light into the light guide plate is provided on a portion of the display plate where a time character is formed.
【請求項4】 前記導光板には太陽電池層の受光面と対
向する反射層を設けたことを特徴とする請求項1乃至3
のいずれかに記載の時計用文字板。
4. The light guide plate according to claim 1, further comprising a reflection layer facing the light receiving surface of the solar cell layer.
The clock dial according to any one of the above.
【請求項5】 前記導光板には太陽電池層の受光面に近
接した位置にプリズム面を設けたことを特徴とする請求
項1乃至4のいずれかに記載の時計用文字板。
5. The timepiece dial according to claim 1, wherein a prism surface is provided on the light guide plate at a position close to a light receiving surface of a solar cell layer.
JP21018797A 1997-07-22 1997-07-22 Clock dial Expired - Fee Related JP3533071B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21018797A JP3533071B2 (en) 1997-07-22 1997-07-22 Clock dial

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21018797A JP3533071B2 (en) 1997-07-22 1997-07-22 Clock dial

Publications (2)

Publication Number Publication Date
JPH1138158A true JPH1138158A (en) 1999-02-12
JP3533071B2 JP3533071B2 (en) 2004-05-31

Family

ID=16585233

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21018797A Expired - Fee Related JP3533071B2 (en) 1997-07-22 1997-07-22 Clock dial

Country Status (1)

Country Link
JP (1) JP3533071B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005069842A (en) * 2003-08-25 2005-03-17 Kawaguchiko Seimitsu Co Ltd Dial for timepiece
WO2005071760A1 (en) * 2004-01-23 2005-08-04 Origin Energy Solar Pty Ltd Solar panel
WO2023214245A1 (en) * 2022-05-05 2023-11-09 John Paul Leimone Timepiece with light-amplifying design

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005069842A (en) * 2003-08-25 2005-03-17 Kawaguchiko Seimitsu Co Ltd Dial for timepiece
JP4516292B2 (en) * 2003-08-25 2010-08-04 シチズンホールディングス株式会社 Clock dial
WO2005071760A1 (en) * 2004-01-23 2005-08-04 Origin Energy Solar Pty Ltd Solar panel
WO2023214245A1 (en) * 2022-05-05 2023-11-09 John Paul Leimone Timepiece with light-amplifying design
US12013665B2 (en) 2022-05-05 2024-06-18 John Paul Leimone Timepiece with light-amplifying design

Also Published As

Publication number Publication date
JP3533071B2 (en) 2004-05-31

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