JPS6025620Y2 - Small electronic calculator with calendar display - Google Patents

Description

[Detailed explanation of the idea] This invention concerns a small electronic calculator.

Recently, small electronic calculators have been commercialized that have functions such as a clock and a calendar in addition to arithmetic functions.

However, conventional multifunctional small electronic calculators of this type all use a display section that displays numeric data and calculation results to switch between displaying the time, calendar, etc.; It was not possible to perform different kinds of displays at the same time.

In addition, in small electronic calculators, the keypad for calculation operations and the display are located on the same surface, so there is a limit to the size of the display, but in conventional multifunctional small electronic calculators, Since the time and calendar are also displayed on a display section whose size is limited, for example, if you want to display one month's worth of calendars, you need to reduce the calendar to a very small size. This would make the calendar display very difficult to read, so even if it was called a calendar display, it could only display the date of the day (year, month, day) and day of the week. .

In addition, some calculators with a clock had the calculation display section and the clock display section separated, facing each other back-to-back on the front and back surfaces of the case. If they are placed in the same relationship, the strength of the main body of the computer will be greatly reduced because the viewing openings of the display portions provided in the case will face each other.

This becomes an extremely serious problem, especially when the display area of one display section is relatively large compared to the main body of the computer.

Furthermore, in the past, consideration was not given to preventing damage to a display section having a large display area.

This idea was made in view of the above-mentioned circumstances, and its purpose is to install a calculation display section on the front side where the key input section is provided, and to display the calculation display section on the back side. Even though a calendar display section having a display area larger than the display area is installed, it is possible to prevent a significant decrease in strength of the calculator body, and to sufficiently prevent damage to the calendar display section. An object of the present invention is to provide a small electronic calculator with a calendar display section.

An embodiment of this invention will be described below with reference to the drawings.

In Figures 1 to 3, 1 is a case of a small electronic calculator, and various input operation keys 3 are provided on the surface of this case 1.
. A second display section 5 separate from the calculation display section is provided.

The calculation display section 4 and the second display section may be, for example, a liquid crystal display device (whether it is a type having segmented electrodes in the shape of a display pattern or a dot display type having dot-shaped segment electrodes). As shown in FIG. It is connected to the board 6 via a connector 7.

Further, the second display section 5 provided on the back surface of the case 1 has a large area that occupies most of the back surface of the case, and the liquid crystal display device 5a constituting the second display section 5 is provided on the back surface of the case 1. It is installed on the inner surface of the formed transparent part 1a and connected to the circuit board 6 by a connector 8.

The reason why the transparent part 1a is formed on the back surface of the case and the liquid crystal display device 5a is installed on the inner surface of the transparent part 1a is because the strength of the case 1 is reduced if a large-area opening is provided on the back surface of the case.

The transparent portion 1a may be formed integrally with the case 1 using a transparent plate such as an acrylic plate.

Further, as shown in FIG. 3, the second display section 5 is provided in a part that does not correspond to the calculation display section 4, and the openings of both display sections provided in the case are arranged so that they do not face each other. It is designed to prevent a significant decrease in strength.

In FIG. 3, reference numeral 9 denotes an elastic sheet made of rubber or the like provided on the circuit board 6, and this elastic sheet 9 has bulges 10 and 10 corresponding to the various input operation keys 3, 3, respectively. When the keys 3, 3 are pressed down, the bulge 10.10 deforms downward, and the contacts provided on the lower surface of the bulge come into contact with the contacts on the circuit board 6. There is.

That is, the small electronic calculator of this embodiment has the calculation display section 4 provided on the front surface of the case together with the key input section 2, as well as the calculation display section 4 provided on the back of the case. By providing a large-area second display section 5 separate from the calculation display section 4, the time, calendar, etc. can be displayed on the second display section 5 on the back of the case without using the calculation display section 4. For example, as shown in FIG. 2, the second display section 5 displays a time display 11 and a date (year, year,
Month, day) display 12 (the figure shows the display when the time is 10:00 p.m. and the date is July 3, 1972), and a calendar display 13 for one month. It has become so.

The calendar display 13 is a perpetual calendar type display in which a Sunday mark 13a is displayed where Sunday corresponds.

However, in the small electronic calculator of this embodiment,
By displaying the time, date, and calendar on the second display section 5 on the back side instead of the calculation display section 4 on the front side, the time, date, and calendar can be displayed at all times, and therefore the time display 11, date display 12, and calendar display 13, you can view these displays at any time by simply flipping the calculator over, and if you want to perform calculations, you can do the calculations immediately without having to perform a separate display switching operation. Operation can be started.

Furthermore, in the small electronic calculator of this embodiment, the second display section 5 for displaying the calendar display 13 is provided on the back surface of the case 1, so that the second display section 5 exceeds the area of the back surface of the case. Since the second display section 5 can be made sufficiently large, the calendar display 13, which displays many numbers in an array, can be displayed with large numbers for easy viewing.

Moreover, since the second display section 5 is installed on the inner surface of the transparent plate provided in a portion that does not correspond to the calculation display section 4, it is possible to prevent a significant decrease in case strength, and also to 2 display part 5 has the disadvantage that it can be protected from damage by a transparent plate.

Note that the second display section 5 on the back side in the above embodiment has been described as displaying the time, date, and calendar.
The second display section 5 may be used to simply display a calendar, and the small electronic calculator with a calendar of this invention is very useful in practice for small electronic calculators that have an arithmetic display section and a calendar display section. It is something.

In other words, in the compact electronic calculator with a calendar display of this invention, the calculation display is installed on the surface of the case where the key operator is provided, and the calculation display is installed on the back of the case in a part that does not correspond to the calculation display. A transparent plate is provided, a calendar display section is installed on the inner surface of the transparent plate, and the area of the transparent plate and the display area of the calendar display section are made smaller than the display area of the calculation display section.

Therefore, with this invention, although it has display functions of both a display and a calendar display, it is possible to enlarge the display (especially the calendar display) and make it easier to see without increasing the size of the computer itself. .

Moreover, in this invention, the calculation display section and the calendar display section are provided so as not to face each other as described above, so the calculation display section and other display sections are arranged back to back on the front and back surfaces of the case. Unlike conventional small electronic calculators, the transparency openings of each display section do not face each other and significantly reduce the strength of the main body of the calculator. Since the calendar display section is installed on the inner surface of the case, damage to the calendar display section can be sufficiently prevented even though the calendar display section is provided on the back surface of the case.

[Brief explanation of drawings]

The drawings show one embodiment of this invention; Fig. 1 is a perspective view seen from the front side, Fig. 2 is a perspective view seen from the back side, and Fig. 3 is taken along line A-A in Fig. 1. FIG. 1...Case, 2...Key human resources department, 4
...Calculation display section, 5...'...Second display section, 11...Time display, 12...Champ display, 13...・Calendar display.

Claims (1)

[Scope of utility model registration request] In a small electronic calculator with a calendar display section that has a calculation display section and a calendar display section separately, the calculation display section is installed on the front surface of the case where the key manual section is provided, and the calculation display section is installed on the back side of the case. A transparent plate is provided in a portion that does not correspond to the area, and the calendar display section is installed on the inner surface of the transparent plate, and the area of the transparent plate and the display area of the calendar display section are larger than the display area of the calculation display section. A small electronic calculator with a calendar display.