Timepiece faceplate, and electrical timepiece equipped with solar battery

A technology for solar cells and electronic timepieces, which is applied in the directions of timepieces, electronic timers, electronic timer structure details, etc., can solve problems such as difficulty in balancing light transmittance and brightness, inability to ensure light transmittance, etc., and achieve excellent aesthetic appearance , the reflection is fine, the effect of improving the sense of luxury

Inactive Publication Date: 2014-02-12
SEIKO EPSON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the case where the layer made of powder and curable resin of Patent Document 1 is formed over a wide area, instead of being formed on a part of the dial surface such as a logo, when applied to an electronic watch with a solar cell There are the following problems in the dial of the watch: it is not possible to ensure sufficient light transmission, and it is difficult to balance light transmission and brightness

Method used

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  • Timepiece faceplate, and electrical timepiece equipped with solar battery
  • Timepiece faceplate, and electrical timepiece equipped with solar battery
  • Timepiece faceplate, and electrical timepiece equipped with solar battery

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0033] Structure of clock face

[0034] figure 1 It is a schematic diagram showing the cross section of the timepiece dial 1 of the first embodiment. The timepiece dial 1 includes a dial main body 11 and a glitter layer 12. The dial main body 11 has light transmittance. The glitter layer 12 is provided on the surface side (the back side of the clock) of the dial main body 11 opposite to the viewing surface (the watch face). ), and the bright powder 121 is dispersed in the translucent resin 122 .

[0035] The structure of the dial body

[0036] The dial main body 11 may be made of various materials, but needs to be made of a light-transmitting material. Accordingly, it can be suitably applied to a solar timepiece dial (a dial included in a timepiece equipped with a solar cell) that utilizes the excellent aesthetic appearance and excellent light transmittance of the timepiece dial 1 . In the present invention, "having light transmittance" means having the property of transmi...

no. 2 Embodiment approach

[0098] Then refer to Figure 4 A second embodiment of the present invention will be described. Figure 4 It is a schematic diagram showing the cross section of the timepiece dial of the second embodiment. In this embodiment, a colored layer 13 is provided between the dial main body 11 and the glitter layer 12, and the colored layer 13 has translucency. Except for this point, the timepiece dial of the present embodiment is formed in the same manner as the timepiece dial of the first embodiment.

[0099] The translucent colored layer 13 is preferably formed by coating a resin containing a dye. The tint of the colored layer can be chosen arbitrarily. The thickness of the colored layer 13 is preferably within a range of not less than 1 μm and not more than 20 μm.

[0100] For example, the combination of the colored layer 13 being white and the glitter layer 12 being white-yellow can provide a timepiece dial 1 with a pearl-colored appearance.

[0101] In addition, the combinat...

Embodiment 1

[0113] First, a polycarbonate-based sheet is press-molded to produce a substrate in the shape of a watch dial, and then the necessary parts are cut and ground. The obtained substrate was approximately disc-shaped, diameter: 27 mm×thickness: 500 μm. Make it the dial body. In addition, regarding the light transmittance of the dial main body, the transmittance of visible light when using a white fluorescent lamp (FL20S-D65 for inspection, produced by Toshiba Corporation) as a light source is 80% or more.

[0114] Next, the dial main body is cleaned. As washing of the dial main body, first, 30 seconds of alkaline immersion and degreasing were performed, and thereafter, 10 seconds of neutralization, 10 seconds of water washing, and 10 seconds of pure water washing were performed.

[0115] The entire surface of the back side of the dial main body cleaned in this way is coated with a composition comprising glitter powder, uncured thermosetting resin (urethane resin), and a ring as ...

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Abstract

To provide a timepiece faceplate having appropriate light permeability with excellent aesthetic appearance having glittering property, and an electrical timepiece equipped with a solar battery, a timepiece faceplate of the invention includes a faceplate main body that has light permeability, and a glittering layer that is provided on either one of a front surface side and a back surface side of the faceplate main body and is configured by dispersing a glittering powder into a light permeable resin. The glittering powder is configured by laminating a metallic oxide film above one surface side of a plate shaped base material, which has light permeability, and the glittering powder is a lamination powder that an average grain diameter is more than 10 mum and less than 90 mum.

Description

technical field [0001] The present invention relates to a dial for a timepiece and an electronic timepiece with a solar cell. Background technique [0002] For watch dials, not only practicality such as visibility but also decorativeness (aesthetic appearance) are pursued. Conventionally, a member obtained by processing a metal plate, or a member obtained by applying coating, metal plating, or the like to a plastic substrate has been used as a watch face. In addition, it is also desired to obtain a watch face that exhibits a more excellent aesthetic appearance that cannot be obtained by simple metal plate or metal plating. [0003] On the other hand, electronic timepieces with solar cells are highly evaluated from the viewpoints of ease of maintenance and resource saving. For a timepiece dial applied to an electronic timepiece with a solar cell, the dial is required to have a translucency to pass a sufficient amount of light to generate sufficient electromotive force for t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G04B19/06G04B19/10G04B19/12G04C10/02
CPCG04C10/02G04G17/00G04B19/06G04B19/10G04B19/12G04B45/0076
Inventor 高泽幸树
Owner SEIKO EPSON CORP
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