JP3413555B1 - World time quick converter for analog clock - Google Patents

Abstract

[Abstract] [Problem] To know the local time of major parts of the world, the time difference table does not expand, and it does not rely on calculation by mental arithmetic, which is easy to make mistakes.
The present invention provides a tool and method for a simple and easy-to-read world time quick reference which can be achieved simply by applying to an analog clock on hand. SOLUTION: In order to know the local time of each region of the world viewed from Japan, if it is known how much the reference time, for example, the 12 o'clock position is different between Japan and each region, the difference is determined. If you read the hour hand (hour hand) on another dial, rotated by the minute, you can read the local time in each region. If this separate dial itself, or a certain notation that reminds of it, or a chart that assists in understanding is made in the form of a single leaf sticker or card, it can be easily pasted on the front glass of the clock face or viewed in a double watermark. Tools and methods that can read local time in various parts of the world in a simple way.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention makes it possible to visualize the local time in a major region of the world by pasting it on a glass cover in front of an analog timepiece dial indicating the standard time of a certain region, or by overlaying the watermark on it. The present invention relates to a sticker or a card that can be easily read.

[0002]

2. Description of the Related Art As a method of knowing the local time in each region of the world, (1) refer to the time difference table each time, (2) remember the time difference and calculate by mental calculation each time, (3) special for dials etc. There is, for example, a reading from a world time compatible clock equipped with the mechanism of. In (1), you have to carry a time difference table,
In (2), the calculation may be wrong. Regarding (3), many attempts have been made to improve the time of major cities in the world by devising an analog clock.
The structure is complicated and expensive.

As one of the cases of (1), as a relatively simple tool for checking the world time, there is a tool having a rotatable disk having a center pinned on a thick mount. Major regions of the world are printed on the disk at positions corresponding to the time difference, and 24-hour time numbers are printed on the mount immediately outside the disk. If the reference area, for example Japan, is 3:00 pm, the position of Japan on the disk is 15
Find the area on the disk that you want to know the local time in time,
In this method, the local time is read by reading the time scale around the area. It is a portable world time quick view converter consisting of three parts, a mount, a pin, and a rotating disk, although it is slightly thick.

Regarding the case of (3), one provided with a plurality of short hands for the world's major cities (same drive), 24
There are devices that design a world map etc. on the dial of the time clock and turn a part or the whole of the dial, and those that write the time difference between the standard time of major cities in the world and Japan time on the dial itself. Proposed. As a specific example,
Japanese Patent Application Laid-Open No. 11211848 discloses a time indicator in which the time is described on one of the two rotating bodies and the name of a major city is described on the other, and the time of the world is simultaneously displayed depending on the positional relationship. In all of these conventional techniques, it is necessary to build a mechanism for displaying the local time on the clock itself, so that the mechanism is complicated and has special specifications, and the manufacturing cost is high.

[0005]

[Problems to be Solved by the Invention] In order to know the local time in the major regions of the world, the time difference table does not expand, it does not rely on easy arithmetic error calculations, and without purchasing a new expensive watch, It provides a tool and method for world-time fast-viewing that consists of a thin, one-piece, single-piece, inexpensively manufacturable that only needs to be applied externally directly to the glass surface of your analog watch cover.

[0006]

[Means for Solving the Problems] The time difference between regions on the earth is fixed. In order to know the local time in each region of the world viewed from Japan, if you know how different the standard time, for example, the 12 o'clock position in Japan and each region, rotate by the difference. If you read the minute hand (hour hand) on another dial, you will be able to know the local time in each region.

The position at 12:00 as a reference time is
For each major region of the world, if the time corresponding to the reference region analog clock dial (hereinafter referred to as the equivalent time position) is indicated together with the region name, that position is set to 1
By imagining a virtual clock face at 2 o'clock and reading the hour hand, you can know the local time in the area.
That is, it is advisable to stick a sticker or a sticker (hereinafter, also referred to as a sticker together) indicating the area name on the corresponding time position from the glass cover surface that covers the analog clock dial. In this case, it may be difficult to virtualize the clock face, but there is no need for anything other than a seal, and this is the simplest way to complete a world time clock. The sticker with the name of the main area may be one that can be individually cut and pasted by selecting the necessary area for the user, or even a single disc-shaped sticker with the names of multiple main areas Good, but it is necessary to be able to see through the short hand.

When it is desired to stick a sticker on a high-class watch or the like, the corresponding time position of the area where the local time is desired is known from another reference chart in which the corresponding time position is determined according to the area name and its time difference. It is also possible to read and read the hour hand as 12 o'clock, and read the minute hand while imagining a virtual clock face like the case of the sticker. In this case, however, there is an unavoidable constraint that the reference chart must always be prepared next to the analog clock.

Instead of imagining a virtual timepiece dial, if a reference timepiece dial capable of seeing watermarks is overlaid on an analog watch glass surface, the hour hands are seen through the overlaid watch dial and read. , It becomes easy to read the local time. In other words, the virtual clock face has been replaced with an imaginary one. At this time, the centers of the two dials are overlapped with each other at 12 o'clock, which is a watermark-readable clock dial, at the corresponding time position on the clock dial of the area where the local time is desired to be known. With a clock face that allows you to see watermarks like this,
It would be convenient if the above mentioned reference charts showing the names of each region and the corresponding time positions determined according to their time difference are stored in the same card. A watch dial that allows watermark viewing is either a card with a time number scale marked on a transparent material film, or an opaque material card in which the circle immediately inside the circumference of the time number scale is cut out. But good. Preferably, the former card uses a transparent film that can also display the center position of the watermark watch clock face for facilitating alignment.

Further, regarding the reference chart in which the name of each region and the corresponding time position determined according to the time difference are described, (1) a diagram showing the time difference, that is, the corresponding time position of other regions with reference to a specific region, for example, Japan. And (2) Ordinal numbers obtained by arranging the regions from the earliest start of the day on earth to the latest regions on an hourly basis are used as index numbers, and the time difference is calculated from the subtraction of index numbers between different regions. A method of using a chart to obtain Hereinafter, this index number is referred to as a time difference index number. (1) is for specific areas, but (2) can be used as a universal method. The reference chart may be a simple numerical table in which area names, time differences, corresponding time positions, and time difference index numbers are written, but a chart in which area names are arranged on a circle according to time difference numbers is intuitive and easy to understand. If you write this circular chart on a transparent film, you can easily read the corresponding time position of the local time area you want to know by overlaying it on the watch glass surface. This will be referred to as a corresponding time reference chart that allows watermark viewing. When overlapping, align the clock dial and the center of this circle chart, and the standard time area name of the analog clock in the circle chart and the clock dial at 12:00. Then, if you read the position of the area where you want to know the local time on the clock face, it is the corresponding time position. If the 12 o'clock of the watch face that allows watermarks to be read matches the time position read in this way, and the centers of the respective circles are also overlapped on the surface of the watch glass, and the short hand is read on the dials, Is the local time. In this way, a universal (universal) universal analog clock that can be used anywhere in the world,
A thin leaflet tool and method for visual world time conversion is provided.

With an analog clock that expresses 24 hours a day by dividing it into 12 hours, it is necessary to judge whether it is morning or afternoon. Even if the local time of another area seen from the reference time area can be known by the method of the present invention, it may be difficult to instantly determine whether it is morning or afternoon. As a method to make this judgment,
You can apply the following rules. Here, the reference area is A, the area where the local time is desired to be known is B, and the corresponding time position is X o'clock. When the B site seen from the A site is (1) 12 hours or more ahead, (2) 12 hours or more ahead, (3) 12 hours or less behind, (4) 12 hours or more behind There are four cases of (1)
In the cases of (3) and (3), when the clock hands are in the counterclockwise range from 12 o'clock to X o'clock on the clock dial, (AM / PM) of A and B are the same, and (2) and ( In the case of 4), it matches when it is in the clockwise range. It would be convenient if a diagram expressing this was contained in one card together with the above-mentioned watermark-readable clock face and reference diagram at the corresponding time position.

The main regions of the world are not limited to the region names and the number thereof, but refer to regions such as Japan, New York, San Francisco, England, France, etc., where it is highly necessary to know the local time. Since the names of major areas must be written in a relatively narrow range, they may be abbreviated as abbreviations. In addition, a clock face that allows watermark viewing,
The equivalent time reference chart that allows you to see the watermark is that when it is placed on the front glass cover of the analog clock face, you can see through it and see the analog clock face itself, the minute hand, the minute hand, etc. It is a dial or chart.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION When the world time quick view conversion tool according to the present invention is applied to a cover on the front face of an analog timepiece dial from the outside, (A) a seal according to the present invention is attached to the cover. In the case of realizing it, there are two embodiments of (B) in the case of realizing it by superimposing a dial card according to the present invention and viewing the watermark. In (A), although there is the simplicity that the world time is completed only with the clock and the sticker, it may not always be easy to read the time with the virtual dial. In order to improve the readability, (B) provides a watch dial that allows watermarks to be seen, but conversely, the inconvenience of having to carry it with the watch is inevitable. Each embodiment will be described with reference to the drawings in the order of a seal first and then a watermark card.

[0014]

EXAMPLE FIG. 1 is an example of such a seal design. There is a cut just outside the circumference, and the disc-shaped sticker that has been peeled off is pasted on the watch glass surface. The parts other than letters and lines are transparent, so the positions of the minute hand, minute hand, and second hand of the clock can be read sufficiently. If color printing is used for the identification mark of each region, the visibility is improved and the local time in the world region is more easily distinguished and easier to read. If it is a Japanese standard world clock, the Tokyo (TK) mark should be pasted at the 12 o'clock position of the analog clock, and if you want to make it a San Francisco (SF) standard world clock, the SF mark is the normal 12 o'clock. It may be attached so that it is positioned. Underlining is attached to cities that are 12 hours behind Tokyo.

FIG. 2 is an example of a product on the assumption that the seal of FIG. 1 is actually widely used. You can choose the most suitable size according to the size of your clock. It also adds a description of how to use it. Here is the explanation. "You can find the local time of major regions of the world just by pasting it on the glass surface of an analog clock. If you want to know the local time of each region around the world based on TK (Japan) time, set the position of TK to 12 Please read the short hand at 12 o'clock in each of those areas, and read the minute hand as it is on the analog clock face as usual. It shows that it is 12 hours or more behind Tokyo. ”Figure 2 further explains how to determine the local time (am / pm) of each region corresponding to Japan time. The explanation is as follows. "The judgment of the local time (AM / PM) in the case of Japan time standard can be understood by the following rules. When considering the local time of the city with an underline, from 12 o'clock to the position of the regional mark clockwise The local time (AM / PM) matches the day before (AM / PM) Japan time only if the hour hand is within the range. The relationship of (AM / PM) is reversed.For areas without underlined display, only when there is a short hand in the range from the area mark to 12:00 counterclockwise,
The local time (AM / PM) matches the same day (AM / PM) Japan time. If it is outside that range (am / pm), the relationship will be reversed. In order to make this easier to understand visually, for each region, the range when the local time (am / pm) matches Japan time is circled in the seal in each region. You may show it.

An example in which the local time of another area is actually read on the basis of Japan time will be described. FIG. 3 is a world timepiece in which the same seal as in FIG. 1 is pasted on the surface of the watch glass based on the Japanese time standard, and shows a state in which Japan time is 10:10 am on May 21. In this sticker, the time zone index for judging (AM / PM) is also shown along with the area name. FIG. 4 shows the state of Japan time on May 21, 3:45 pm on this world clock. How many hours B is behind A from the time difference index number (Na) of the reference time area A at the 12 o'clock position on the sticker and the time difference index number (Nb) of the area B whose local time you want to know , Or whether it is progressing, N = Na-
It can be known by Nb. The reference area and the area where you want to know the local time (am / pm) match on the clock face when B is ahead of A by 12 hours or more or behind 12 hours. When there is a short hand in the counterclockwise range from 12:00 to the B area name mark, B
If B is ahead of A within 12 hours or is more than 12 hours behind, it will be B from 12 o'clock on the clock face.
This is when there is a short hand in the clockwise range up to the area name mark. If the position of the minute hand is out of the range of this rule, the areas A and B (am / pm) are reversed. Table 1 shows the local time in each city in the world thus read in the cases of FIGS. 3 and 4.

[Table 1]                             In case of FIG. 3 In case of FIG. TK (Tokyo: reference city) 5/21 10:10 am 5/21 03:45 pm HK (Hong Kong) 5/21 AM 09:10 5/21 PM 02:45 NY (New York) 5/20 PM 08:10 5/20 AM 01:45 CH (Chicago) 5/20 PM 07:10 PM 5/20 AM 00:45 SF (San Francisco) 5/20 PM 05:10 PM 5/20 PM 10:45 PM HW (Hawaii) 5/20 pm 03:10 5/20 pm 08:45 PR (Paris) 5/21 AM 02:10 5/21 AM 07:45 LN (London) 5/21 AM 01:10 5/21 AM 06:45

FIG. 5 is an example of a seal similar to that of FIG. 1, but in which each regional city mark in the seal can be peeled off individually. There are notches along the periphery of each regional city mark. In this case, the user can select only the regional cities that he needs. Since the part where the seal covers the watch face is limited to a local part, the seal in this case is not necessarily a transparent seal.

FIG. 6 is an example of a product on the assumption that the seal of FIG. 5 is actually widely used. In this case, the usage description is "You can find the local time of the main region of the world simply by pasting it on the glass surface of the analog clock. Attach the stickers of each regional city to the positions shown in the clock diagram below. Please read the hour hand as if it were the local time of the city at 12 o'clock. The minute hand should be read as normal on the analog clock face. Underlined cities are more than 12 hours behind Tokyo. (If you consider a city other than Tokyo as a standard, rotate the clock so that the city is at 12 o'clock) "

Next, another method for realizing the world timepiece according to the present invention, that is, instead of attaching a sticker to the front glass cover of the timepiece dial, a reference diagram of the dial face seen by the watermark and the time difference seen by the watermark is presented. A description will be given of a card system that exhibits the same operation and effect as in the case of a sticker by stacking the glass cover each time. FIG. 7 is a watermark-readable reference clock face according to the present invention for watermark-reading the minute hand by overlaying it on an analog clock on hand to know the local time in each region of the world. The star (★) mark is placed at the 12 o'clock position so that when the card is placed on the watch cover and the hour hand is read, the transparent dial is rotated according to the time difference of each region to align the position. It is necessary to make the alignment easier. For the sake of convenience, the example in which the reference time is 12 o'clock is shown, and therefore a star (★) mark is placed at the 12 o'clock position. (The reference time does not have to be 12:00, but 12:00 is easy to understand)

FIG. 8 should be used together with FIG. 7, and shows where in Japan time 12:00 the local time 12:00 in other regions of the world corresponds to when the standard time is 12:00 Japan time. It is a time difference reference chart. From this figure, check the position of the reference 12 o'clock on the clock time zone of the area where you want to know the local time, that is, the equivalent time position, and check the watermark of Fig. 1 so that the star (★) mark is superimposed on the confirmed position. Put the possible reference clock dials on top of your own analog clock dial, centered on top of each other, and read the hour hand on that reference dial, that is, the local time in the area. In Fig. 8, is the time difference from Japan time delayed or advanced?
It will be even more convenient if you can see if it is within the time or more by different colors for each area.

In order to know the local time in New York, FIG. 9 shows the position of the star (*) mark at 2 o'clock on an analog timepiece having the reference clock face of FIG. (It is known from FIG. 8 that New York is at the 2 o'clock position) and the overlapping state is shown. Japan time 4: 3
It is an example of 5 minutes. If you read the local time in New York on the reference time scale on the outside, you can see that it is around 2 o'clock. Since the minute hand is read as Japan time, the local time in New York is at 2:35.

In order to know the local time in London, FIG. 10 shows a star (*) mark at 9 o'clock on an analog clock which has the reference clock face of FIG. The state of overlapping is shown (knowing that London is at 9 o'clock position from FIG. 8). This is an example of Japan time at 4:35. If you read the local time in London on the outer reference time scale, you can see that it is around 7 o'clock. Since the minute hand is read as Japan time, the local time in London is 7
It is 35 minutes.

It should be noted that, when trying to read the local time of the area where the daylight saving time is applied from the area where the daylight saving time is not applied, or vice versa, the amount of time (usually 1 It is necessary to adjust the time). For example, when reading the local time in each region of the United States where daylight saving time is applied from Japan, one hour must be added to the local time read using the world time converter of the present invention. Conversely, when reading the local time in Japan from a certain area in the United States, one hour must be subtracted from the read time.

FIG. 11 shows FIG. 7 and FIG.
It is put into a single card and practically easy to use. The lower left part of the card is the watermarkable reference watch face of the present invention, and this part is used by overlaying it on a wristwatch. The explanation of how to use is as follows. "Check the location of the area where you want to know the local time by referring to the time difference reference diagram on the right. A star (★) is displayed at the confirmed location.
Place the transparent watch face on the left side just above your watch so that the marks match. If you read the hour hand on the transparent dial scales that overlap, it is the local time of the city. However, the minute hand is the same as reading in Japan time. "

Although the local time in each region of the world can be read by the method as described above, the judgment of (am / pm) is difficult to understand with this alone. From the magnitude of the time difference and Japan time seen from the time difference chart as shown in Fig. 8, (AM /
Afternoon) can be logically calculated and derived, but there is a much simpler and intuitive way to judge. You don't have to think hard if you decide according to the following rules. That is, in the case where the time of the target area whose local time you want to know is ahead of the reference area within 12 hours or behind the reference area by 12 hours or more, the short hand moves clockwise from 12:00 of the reference area time. If it is within the range up to the position on the time circle indicating the region (corresponding time position), it coincides with (am / pm) of the reference region, and if it is outside the range, it does not coincide. If the target area is 12 hours ahead of the standard area or is less than 12 hours behind the standard area, the short hand will move to 12 of the standard area time.
If it is within the range from the time counterclockwise to the position on the time circle indicating the region (corresponding time position), it matches with the reference region (am / pm), and if it is outside that range, the rule of non-matching can be applied.

In the case of New York and London shown in FIGS. 9 and 10, the Japanese time is (am / pm) because it is outside the matching range of (am / pm) in both cases when viewed from Japan in the reference time region. At 4:35, it will be 2:35 (pm / am) in New York and 7:35 (pm / am) in London.

FIG. 12 is a chart showing the time difference in each region of the world on a circle. It is printed on a transparent film so that the watermark can be seen. The numbers in brackets near each area name are
It is a time difference index number that makes it easy to calculate the time difference between regions by subtraction.
It can be used for the judgment of (afternoon). FIG. 13 shows a practical example of the product of the present invention in which the watermark-viewable diagram and the watermark-referenced reference clock dial are both provided and the usage thereof is also described. The feature of the present invention product using the time difference index number as in this example is that it is not a local card assuming a specific usage area but a universal card that can be used in any area in the world. .

The method of using the universal world clock card of FIG. 13 is as follows. First, in the time difference chart that allows watermark viewing on the left side, select the analog clock standard time area (A) of the user of this card and the area (B) where you want to know the local time, and the position of (A) matches at 12 o'clock. Similarly, superimpose the time difference chart on the front glass cover of the watch dial so that the center of the circle of the time difference chart matches the center of the watch dial,
The time (X) on the wristwatch corresponding to the region (B) is read, that is, the corresponding time position.

Next, the reference clock dials on the right side, which can be seen through, are superimposed so that the center of each of the two dials is aligned so that the star (★) mark appears at the position (X) on the clock. To match. Then, the time (Y) is read on the reference watch dial that allows the watermark to be seen by overlapping the hour hand of the watch. The minute hand is read as (Z) minute on the dial of the watch itself. Thus, (B)
It can be read that the local time of the area is (Y) hour (Z) minute.

In some cases, it may be difficult to tell whether the (Y) hour (Z) minutes in the B area are morning or afternoon. In this case, N = Na-from the number Na in parentheses in the area A and the number Nb in parentheses in the area B in the time difference chart on the left side where the watermark can be seen.
Obtain Nb. Based on the value of N, it is possible to determine (am / pm) by referring to FIG. In Figure 14, the star (★)
The position (X) of the mark is shown, and it is known from this figure whether or not the clock hands are within the shaded region from 12 o'clock depending on the value of N, which is clockwise or counterclockwise. If the clock hand is within this shaded area, the
It turns out that (afternoon) matches. FIG. 14 shows, for example, FIG.
It can be conveniently used when printed on the back of a practical card as shown in 3.

For example, if A is Japan and B is San Francisco, then N = 4-21 = -17. Therefore, the figure
Refer to the diagram on the left side of 14. The position (X) of the star (★) is 5
It's time. From now on, if Japan is at 9:30 am, for example, the short hand is outside the shaded area in the left diagram of FIG. 14, so San Francisco is at 4:30 pm. Japan is 3 pm
If it is 15 minutes, San Francisco is 10:15 pm because the short hand is in the shaded area.

For example, A is New York and B is United Kingdom (U
If it is K), it can be understood from the above description that (X) is 7:00. Next, since Na = 18 and Nb = 13,
We get N = 5. In this case, what should be referred to for the judgment of (am / pm) is the case of X = 7 in the diagram on the left side of FIG. If it is 7:45 am in New York, the hour hand is out of the shaded area, so it is 12:45 pm in the UK. If New York is 5:15 pm, it is 10:15 pm because the clock hands are within the shaded area.

[0033]

[Effect of the Invention] Whether it is a wristwatch, a table clock, or a wall clock,
Without applying any modification or modification to the internal structure of the analog timepiece, simply applying the seal or the card according to the present invention on the glass surface of the front face of the watch face, that is, the complicated world clock function is applied to the watch internal structure. It can be turned into a world clock that can read the local time of major regions of the world very easily and inexpensively without making it into.

In addition, in the case of a seal, rotate it to 12
By selecting the area name that comes at the time position, and by using the time difference index number, and in the case of a card, a time difference reference chart that enables watermark viewing using the time difference index number, together with a reference dial that allows watermark viewing By using (AM / PM)
Including the judgment of, the world clock can be based on any region in the world. That is, a thin single-leaf sticker or card with excellent portability can be used as a universal timepiece conversion tool for all countries.

In the case of a seal, it may be necessary to become accustomed to the process of having to imagine a reference dial, but on the other hand, the world clock is completed by itself, that is, no other tool is required. It has excellent characteristics. In the case of a card, although it is always troublesome to hold it next to the clock, it is easy to read the local time because the reference clock face is specifically provided. In either case, since the position of the short hand is visually read on the time scale, there is little error even if the time difference is not calculated.

Due to these characteristics, travelers all over the world,
People who have relatives overseas can make any analog timepiece that they have in the past a world timepiece by externally applying the world timepiece conversion tool of the present invention,
It is not necessary to readjust the hour hand of the clock when moving between regions together with the clock. There is no need to buy a new world clock or the situation.

When it is not necessary to use it as a world timepiece, in the case of a sticker, it can be easily returned to the original timepiece by peeling it off, and in the case of a card, the card need not be used. That is, this is also considered to be the flexibility of the product of the present invention.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a transparent print sticker or sticker according to the present invention to be attached so as to cover the entire glass surface of an analog timepiece.

FIG. 2 is a diagram showing an embodiment in which FIG. 1 is commercialized.

FIG. 3 is a diagram showing a state in which a sticker on which a time zone index number for facilitating time zone calculation is written together with a regional abbreviation is attached to the entire analog watch front glass. The hand of the analog clock points to 10:10.

FIG. 4 is a view showing a state in which a sticker having a time zone index number for facilitating time zone calculation together with a regional abbreviation is attached to the entire front glass of an analog timepiece. The hand of the analog clock points to 3:45.

FIG. 5 is a diagram showing an embodiment of a seal according to the present invention of a type in which a user can select only a necessary city whose local time is desired to be known.

FIG. 6 is a diagram showing an embodiment in which FIG. 5 is commercialized.

FIG. 7 is a reference timepiece dial that can be watermarked to read the world time by stacking it on the surface of a watch glass on hand.

[Figure 8] Local time in other regions of the world as seen from Japan time 1
The time difference reference chart showing the 2 o'clock position.

FIG. 9 is a diagram showing a state in which the watermark-seetable reference clock face shown in FIG. 7 is overlaid on an analog clock on hand so as to know the local time in New York.

[Figure 10] Figure 7 to know the local time in London
The figure which shows the state which carried out the watermark seeing by overlaying the reference clock face which can see the watermark of this on the analog clock which I have.

FIG. 11 is an example of a card of a size that is easy to carry and contains FIGS. 7 and 8 and instructions for use in one sheet.

FIG. 12 is a corresponding time position reference chart in which a watermark showing the time difference of each region of the world can be seen on a circle. The time difference index figures are also shown.

FIG. 13 is a universally usable world clock conversion card having both FIG. 7 and FIG.

FIG. 14 is a reference diagram for making it easy to visually understand the judgment of the local time (am / pm) read by the world time converter according to the present invention.

[Explanation of symbols] [Explanation of symbols]

TK ... Tokyo HK ... Hong Kong NY ... New York CH ... Chicago SF ... San Francisco HW ... Hawaii PR ... Paris LN ... London

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References Open 51-63444 (JP, U) Open 48-33297 (JP, U) Open 55-59365 (JP, U) Open 52- 148143 (JP, U) Actual opening 56-130189 (JP, U) Actual opening 50-102458 (JP, U) Actual opening Flat 6-10885 (JP, U) Actual opening 4-79289 (JP, U) Jikaihei 3-115885 (JP, U) Jiho Sho 46-7894 (JP, Y1) Jiho 38-201 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) G04B 19/22 G06C 3/00 G09B 29/14 G09F 3/00

Claims (7)

(57) [Claims] 1. A seal, characterized in that the names of major regions of the world are each written on a film that allows a watch dial to be seen through, at circumferential positions determined by the time difference between the major regions. 2. The seal according to claim 1, wherein the time difference index numbers for each of the main regions of the world are also written near the names of the regions. 3. A watch dial capable of seeing a watermark in which a mark for clearly identifying a special position different from other times is marked at the position of the reference time. 4. The dial according to claim 3, further comprising a chart showing time differences between major regions of the world. 5. A watermark-viewable chart in which the names of major regions of the world are arranged on the circle at angular positions on the circumference of the circle according to the time difference so that the time difference is represented is provided. Dial according to item 4. 6. The dial according to claim 4, further comprising a time difference chart in which the time difference index numbers of main regions of the world are written in the vicinity of each region name. 7. Dial or claim according to claim 6, characterized in that it comprises a reference diagram for making a local time (am / pm) determination of a major region of the world using a time difference calculation. The seal according to Item 2.