JPH0676888U - Exterior parts for watches - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a wide variety of exterior parts for watches whose colors change according to changes in the environment. [Structure] At least one kind of film whose color changes in response to changes in the external environment on at least a part of the surface, for example, a UV polarizing material film whose color changes with ultraviolet rays, and a temperature-sensitive ink film whose color changes in response to temperature changes Etc. Exterior parts for watches that are formed. In addition, an exterior component for a timepiece in which a transparent or semitransparent organic or inorganic coating is formed if necessary.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a watch exterior part such as a dial, a case, a bezel, a dial ring and a band, and more particularly to a watch exterior part whose color is changed by a change of environment such as external light and temperature.

[0002]

[Prior art]

 Conventionally, dials, cases, bezels, and other exterior parts for watches have been partially multicolored or have a rainbow pattern in order to appeal to their appearance, design variety, luxury, and decorativeness. Some used the interference of light.

[0003]

[Problems to be solved by the device]

 However, among the above-mentioned conventional examples, those that partially perform multi-color printing require a lot of printing man-hours for multi-color printing and become expensive, and when the pattern is decided, a uniform color arrangement is obtained. The problem was that it looked poor and lacked variety.

Further, in the case of a rainbow pattern, since the interference of light is used, it looks brilliant due to the reflection of light, but the pitch of the pattern must be made fine and the number of steps becomes large. There was a problem that it became very expensive.

[0005]

[Means for Solving the Problems]

 The present invention is a film whose color changes in response to environmental changes, such as a UV polarizing film whose color changes to violet, blue, yellow, etc. when it is exposed to ultraviolet light, and whose concentration changes depending on the intensity of ultraviolet light, and to respond to changes in temperature. It is applied to exterior parts for timepieces such as dials, cases, bands, etc. that are precise, detailed, and have a high-class feel, and that require a variety of expressions in smaller parts, such as a temperature-sensitive ink film that changes to black, gray, blue, etc. However, the gist of the invention is a watch exterior component in which at least a part of the surface of the watch is formed with at least one kind of coating whose color changes in response to environmental changes such as ultraviolet rays and temperature.

[0006] As the film whose color changes, a UV polarizing material film whose color changes when it is exposed to ultraviolet rays, and a temperature-sensitive ink film whose color changes when the temperature changes are used. An organic or inorganic coating is formed.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings by taking a timepiece dial as an example. 1 is a plan view of a timepiece dial according to a first embodiment of the present invention, and FIG. 2 is a sectional view taken along line AA of FIG. In the figure, reference numeral 1 is a dial plate substrate, and a surface treatment layer 2 for plating, painting, etc. is formed on the upper surface of the dial plate substrate as required. Reference numeral 3 is an hour character made of the UV polarizing material coating of the present invention, which is formed by screen printing.

In this embodiment, since the hour-shaped portion is formed by the UV polarizing material coating 3, it is normally transparent or white, but it is used in a place exposed to ultraviolet rays, for example, a place exposed to sunlight. Depending on the type of UV polarizing material, the color changes to violet, blue, yellow, etc., and the density of these colors also changes depending on the strength of the ultraviolet light, so when viewed as a dial for a watch, it shows a great variety. It will be rich.

FIG. 3 is a plan view of a timepiece dial according to a second embodiment of the present invention, and FIG. 4 is a sectional view taken along line BB of FIG. In the present embodiment, the UV polarizing material coating 4 is formed on the outer periphery of the dial substrate 1 by screen printing, and the hour character 5 is formed on the upper surface of the UV polarizing material coating 4 by a usual method such as printing, adhesion, and typesetting. Has been done.

Also in the present embodiment, only the outer peripheral portion of the timepiece dial changes its color when exposed to ultraviolet rays as in the first embodiment.

In the present embodiment, if the hour 5 portion is also formed of a UV polarizing material coating having a color different from that of the UV polarizing material coating 4, the hour character 5 and the UV polarizing material coating 4 are different. It shows a variety of colors and becomes more diverse.

FIG. 5 is a plan view of a timepiece dial according to a third embodiment of the present invention, and FIG. 6 is a sectional view taken along the line CC of FIG. In this embodiment, three kinds of UV polarizing material coatings having different color changes when the central part of the dial substrate is exposed to ultraviolet rays, namely, violet type UV polarizing material coating 6, blue type UV polarizing material coating 7 and yellow. The system UV polarizing material coating 8 is formed in a strip shape. In this embodiment, since the UV polarizing material coating film having different color changes is formed, the timepiece dial plate is more varied.

It should be noted that in Examples 1 to 3, the UV polarizing material coating was formed as the coating whose color changes in response to changes in the environment. However, instead of the UV polarizing material coating, a temperature indicator was used. An ink film may be formed, in which case the color changes due to temperature changes in the external environment, and it becomes a timepiece dial plate having a different taste from the UV polarizing material film.

Furthermore, various kinds of colors can be obtained by combining various kinds of colors of the UV polarizing material film that change when exposed to ultraviolet rays and kinds of colors that correspond to temperature changes of the temperature indicating ink film. It is also possible to obtain a rich clock dial.

FIG. 7 is a cross-sectional view of the timepiece dial according to the fourth embodiment in which a transparent resin layer is formed on the upper surface of the timepiece dial of the third embodiment, and the transparent resin thin film layer 9 is further formed by lapping. In addition, since the transparent resin thin film layer 9 is formed, it protects the UV polarizing material coatings 6, 7, 8 and the surface treatment layer 2, and exhibits a three-dimensional and deep color.

The embodiment of the present invention has been described above by taking the timepiece dial as an example, but the present invention is not limited to this, and by applying the present invention to exterior parts for a timepiece such as a band and a bezel, a timepiece is realized. It has the same effect as the dial plate.

[0017]

[Effects of the Invention] As described in detail above, a film whose color changes in response to changes in the external environment, such as a UV polarizing material film or a temperature indicating ink film, is used for dials, cases, bands, etc. By applying to exterior parts for watches, which have a feeling and are required to express more variously in smaller parts, they are very diverse and the effect is great.

[Brief description of drawings]

FIG. 1 is a sectional view of a timepiece dial according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view of a timepiece dial according to a second embodiment of the present invention.

FIG. 4 is a sectional view taken along line BB of FIG.

FIG. 5 is a sectional view of a timepiece dial according to a third embodiment of the present invention.

6 is a cross-sectional view taken along the line CC of FIG.

FIG. 7 is a sectional view of a timepiece dial according to a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Character Plate Substrate 2 Surface Treatment Layer 3 Time Character (UV Polarizing Material Coating) 4 UV Polarizing Material Coating 5 Time Character 6 Violet UV Polarizing Material Coating 7 Blue UV Polarizing Material Coating 8 Yellow UV Polarizing Material Coating 9 Transparent Resin Thin Film layer

Claims (4)

[Scope of utility model registration request] 1. An exterior part for a timepiece, characterized in that at least one kind of coating film whose color changes in response to environmental changes in the external environment is formed on at least a part of the surface. 2. The exterior component for a timepiece according to claim 1, wherein the coating film whose color changes in response to a change in environment is made of a UV polarizing material whose color changes with ultraviolet rays. 3. The exterior component for a timepiece according to claim 1, wherein the coating film whose color changes in response to a change in environment is made of temperature indicating ink whose color changes in response to a change in temperature. 4. The exterior component for a timepiece according to claim 1, wherein a transparent or semitransparent organic or inorganic coating is formed.