JP3140649U - clock - Google Patents

Abstract

There is provided a timepiece in which the visibility of a clock face under sunlight is improved and the time can be easily confirmed.
In a timepiece having a dial, an hour hand, and a minute hand, the dial is provided with an ultraviolet sensitive color developing portion that absorbs ultraviolet rays and develops color. It is preferable that the ultraviolet-sensitive color developing portion 10a constitutes a time display character of the dial 4. Furthermore, it is preferable that the hour hand 5 and the minute hand 6 are provided with an ultraviolet sensitive color developing portion 10b that absorbs ultraviolet rays and develops color.
[Selection] Figure 2

Description

  The present invention relates to a watch.

  When trying to check the watch time under sunlight, sunlight may be reflected on the watch dial or glass, making it difficult to see the watch dial. For this reason, conventionally, there has been a configuration in which a non-reflective treatment is applied to the glass surface or dial of a wristwatch to eliminate the deterioration of visibility due to light reflection.

  In the wristwatch having the above-described configuration, the coating layer that has been subjected to the antireflection treatment may be peeled off during use, thereby forming a scratch pattern on the glass surface. Since such a scratch pattern is visible by the angle of light incident on the glass, if it is formed in multiple numbers over the entire glass surface, the visibility of the dial will be deteriorated and the time will be reduced under sunlight. Cause a situation that can not be easily confirmed.

  Accordingly, an object of the present invention is to provide a watch that can improve the visibility of the dial of the watch under sunlight and can easily check the time.

  In order to solve the above-mentioned problems, the present invention provides a timepiece having a dial, an hour hand, and a minute hand, and an ultraviolet-sensitive color developing portion that absorbs ultraviolet rays and develops color on the dial.

  It is preferable that the ultraviolet-sensitive color developing portion constitutes a time display character of the dial.

  Preferably, the hour hand and the minute hand are further provided with an ultraviolet-sensitive color developing portion that absorbs ultraviolet rays and develops color.

  Further, as a configuration for solving the above problems, the present invention provides a timepiece having a dial, an hour hand, and a minute hand, and an ultraviolet-sensitive color developing portion that absorbs ultraviolet rays and develops color on the dial, and accumulated light. And a light emitting unit for emitting accumulated light to the hour hand and the minute hand in a dark place.

  It is preferable that the light emitting portion constitutes a time display character of the dial.

  According to the above configuration of the present invention, when a watch is used under sunlight, the ultraviolet sensitive color developing part absorbs ultraviolet rays and develops a color that is clearly visible. Even if it is reflected, the visibility of the dial face is not impaired, and the time can be confirmed. Moreover, since the ultraviolet-sensitive color-developing portion is provided on a dial face protected by a windshield glass, an hour hand and a minute hand, it does not peel off during use and does not deteriorate the visibility of the dial face.

  Hereinafter, the present invention will be described with reference to the accompanying drawings, taking a wristwatch as an example.

  1 and 2 show a wristwatch 1 according to a first embodiment of the present invention.

  As shown in FIGS. 1 and 2, the wristwatch 1 has a case portion 2 that houses a known movement (not shown), a transparent windshield 3 that covers the front side of the case portion 2, and a time display character. The dial 4, the hour hand 5 and the minute hand 6, the crown 7 for adjusting the time, and a pair of belts 9 a and 9 b connected to the case part 2 via a belt attaching part 8 are provided.

  The dial 4 is provided with an ultraviolet sensitive color developing portion 10 a, and the hour hand 5 and the minute hand 6 are provided with an ultraviolet sensitive colored portion 10 b. The ultraviolet sensitive color developing portions 10a and 10b are prepared by applying a paint containing an ultraviolet sensitive color developing material that changes color from white to a different color when absorbing ultraviolet light, and applying the paint to the dial 4, hour hand 5 and minute hand 6 and drying them. Yes, the ultraviolet-sensitive color developing unit 10a constitutes the time display character of the dial 4. For example, a known spirooxazine-based photochromic compound powder that changes its color from white to red, green, or yellow by absorbing ultraviolet rays is used as the ultraviolet-sensitive coloring material. When the color is changed to a color other than the above three colors, the color tone is adjusted by appropriately blending the materials selected from the three types of ultraviolet-sensitive color forming materials. The paint applied to the dial 4 is made by mixing one type of photochromic compound or two or more types of photochromic compound powder, varnish, antioxidant and the like into a liquid state. For example, in the first embodiment of the present invention, in consideration of good visibility under sunlight, the device is configured to develop a fluorescent pink color.

  When the wristwatch 1 according to the first embodiment of the present invention is used under light including sunlight or ultraviolet rays, as shown in FIGS. 1 and 2, the ultraviolet-sensitive coloring portions 10a and 10b are included in sunlight and light. By absorbing the ultraviolet rays that are emitted, the color is changed from white to fluorescent pink, and the visibility of the time display characters on the dial 4 and the hour hand 5 and the minute hand 6 is improved.

  Thereby, even if sunlight is reflected on the windshield 3 or the dial 4 of the wristwatch 1 according to the present embodiment, the visibility of the dial 4 is not impaired, and the time can be easily confirmed. Moreover, since the ultraviolet sensitive color developing portions 10a and 10b are provided on the dial 4, the hour hand 5 and the minute hand 6 protected by the windshield 3, they are not peeled off during use and the visibility of the dial 4 is not deteriorated.

  Next, a wristwatch 1 according to a second embodiment of the present invention will be described.

  3 and 4 show a wristwatch 1 according to a second embodiment of the present invention.

  The wristwatch 1 according to the second embodiment is the same as the configuration of the first embodiment except that the light emitting units 11a and 11b are provided and the configuration of the ultraviolet sensitive color developing unit 10a is different. The same reference numerals are assigned to the parts to be described, and description thereof is omitted.

  As shown in FIG. 3, the dial 4 is provided with a light emitting portion 11 a, and the hour hand 5 and the minute hand 6 are provided with a light emitting portion 11 b. The light emitting portions 11a and 11b are, for example, those obtained by applying a sunlight paint that emits light accumulated in a bright place in the dark place to the dial 4, the hour hand 5 and the minute hand 6, and the light emitting portion 11b is the time of the dial 4 Configure display characters. Examples of the animal light paint include those containing a zinc sulfide type animal light material.

  As shown in FIG. 4, the dial 4 is provided with an ultraviolet sensitive coloring part 10 a having a configuration different from that of the first embodiment. The ultraviolet-sensitive color developing portion 10a is a paint containing an ultraviolet-sensitive color forming material that changes color from white to a different color when absorbing ultraviolet rays in the area of the dial 4 excluding time display characters, as in the first embodiment. Is applied.

  When the wristwatch 1 according to the second embodiment of the present invention is used in a dark place where no light is irradiated, as shown in FIG. 4, the light emitting portions 11a and 11b emit light, and the time display characters on the dial 4 are displayed in the dark place. The hour hand 5 and the minute hand 6 can be visually recognized.

  On the other hand, when the wristwatch 1 according to the second embodiment of the present invention is used under the light including sunlight and ultraviolet rays, as shown in FIG. 4, the ultraviolet sensitive coloring portion 10 a emits ultraviolet rays contained in the sunlight and light. Absorbing and coloring from white to fluorescent pink, the visibility of the time display characters on the dial 4 is improved.

  Thereby, the visibility of the wristwatch 1 according to the present embodiment is not affected by the brightness of the place of use, and the time can be easily confirmed. Moreover, since the ultraviolet-sensitive color developing portion 10a is provided on the dial 4 protected by the windshield 3, it does not peel off during use and does not deteriorate the visibility of the dial 4.

It is a perspective view of the wristwatch concerning a 1st embodiment of the present invention, and shows the use state under the situation where ultraviolet rays were intercepted. It is a perspective view of the wristwatch concerning a 1st embodiment of the present invention, and shows the use state under the situation where ultraviolet rays were irradiated. It is a perspective view of the wristwatch concerning a 2nd embodiment of the present invention, and shows the use condition in a dark place. It is a perspective view of the wristwatch concerning a 1st embodiment of the present invention, and shows the use state under the situation where ultraviolet rays were irradiated.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wristwatch 2 Case part 3 Windshield 4 Dial 5 Hour hand 6 Minute hand 7 Crown 8 Belt mounting part 9a, 9b Belt 10a, 10b Ultraviolet sensitive color development part 11a, 11b Light emission part

Claims (5)

In a watch with a dial and hour and minute hands,
A timepiece characterized in that the dial is provided with an ultraviolet-sensitive color-developing part that absorbs ultraviolet rays and develops color.   The timepiece according to claim 1, wherein the ultraviolet-sensitive color forming portion constitutes a time display character of the dial.   The timepiece according to claim 1, wherein the hour hand and the minute hand are further provided with an ultraviolet-sensitive color developing portion that absorbs ultraviolet rays and develops color. In a watch with a dial and hour and minute hands,
The dial is provided with an ultraviolet-sensitive color developing part that absorbs ultraviolet rays and develops color, and a light emitting part that emits accumulated light in a dark place,
A timepiece characterized in that the hour hand and the minute hand are provided with a light emitting part for emitting accumulated light in a dark place.   The timepiece according to claim 4, wherein the light emitting unit constitutes a time display character of the dial.

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