JPH04152385A - Display device for watthour meter - Google Patents

Abstract

PURPOSE:To obtain the display device whose practical use is high by placing the gaps of plural pieces of numeral display parts having seven pieces of segments and a numeral display part having 12 pieces of segments in a state that they are equal to each other or close thereto. CONSTITUTION:An indicator 1 is constituted of a numeral display part consisting of six segment groups 10, 200 to 600 for displaying a numeral of six digits, and two decimal point segments 2, 3. Gaps between groups of the segment groups 10-600 are equal or become gaps being close thereto. In the segment groups 10-600, the segment group 10 of a first place digit, the segment group 300 of a third place digit, the segment group 400 of a fourth place digit, the segment group 500 of a fifth place digit and the segment group 600 of a sixth place digit can display one numeral by combining and lighting plural segments in the respective seven segments. Also, the segment group 200 of a lower second place digit can execute two kinds of numeral display methods.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a display device for a watt-hour meter used, for example, in an electronic watt-hour meter.

(Prior Art) Some conventional electronic watt-hour meters have different display formats depending on the type of multiplication factor that is the specification of the electronic watt-hour meter.

The types of multiplication factors include composite metamorphism ratio times, composite metamorphism ratio times 1
There are 1/0 times the composite transformation ratio times the composite transformation ratio times an integer of 10, and in electronic watt-hour meters that multiply the composite transformation ratio times, the measured value is displayed to the second decimal place (the first display format) is required, and the composite metamorphosis ratio times 10
An electronic watt-hour meter that measures 1 minute or an integer power of 10 requires a Z-format (second display format) display that displays the measured value to the first decimal place.

Figures 5, 6, and 7 show examples of the display devices of this type of electronic power meter, each of which has a 6-digit numeric display. All parts have the same configuration and have multiple segments that can be turned on and off, and each segment consists of a liquid crystal display or light emitting diode, and by combining and lighting each segment, a single number can be expressed. It is now possible to do so.

FIG. 5 shows a display 4 that serves as both the first display format and the second display format described above, in which 6-digit numerical display sections are formed at predetermined intervals, and each display section has 7 display sections. Segment group consisting of segments 100°300.400,500,600
and 700, and is further composed of decimal point segments 2 and 3 for displaying a decimal point. In this case, by switching and lighting the decimal point segments 2 and 3, the first. This becomes a second display format display.

FIG. 6 shows the display 5 of the second display format described above, which is similar to the display device 5 except that only the interval between the lower one digit and the lower two digit display parts is widened, and a decimal point segment 2 is formed in this part. It is the same as Figure 5.

FIG. 7 shows the display device 6 in the first display format described above, except that only the interval between the lower two digits and the lower three digits is widened, and a decimal point segment 3 is formed in this area. It is the same as Figure 5.

(Problem to be Solved by the Invention) The display of the conventional electronic watt-hour meter shown in FIG.
In some cases, it is displayed to the first decimal place, and this is a format that can be used by switching and lighting up decimal segments 2 and 3, so the number displayed above the decimal point and the number displayed below the decimal point. When reading, the mutual spacing between each segment group is equal or close to it, and it must be read using decimal point segments 2 or 3, which are smaller than the number display segment, which may cause misreading. becomes. For example, 001 on display 4
2.51 was displayed, but the meter reader mistakenly changed it to 0.
There is a possibility that the meter will read 0125.1.

Also, Fig. 6 shows the display 5 that displays the weighing value to the first decimal place, and Fig. 7 shows the display 6 that displays the weighing value to the second decimal place. Although it is possible to eliminate the cause of erroneous needle readings, which is a problem with the display device 4 shown in FIG. The process requires manufacturing and management, which is complicated and impractical.

Therefore, the present invention allows the values above the decimal point and the values below the decimal point of the measured value displayed on the display to be clearly readable during meter reading, and can be used regardless of the type of multiplication factor of the watt-hour meter.
The purpose of the present invention is to provide a highly practical electric energy display device.

[Structure of the Invention (Means for Solving the Problems)] In order to achieve the above object, the present invention has a plurality of digit display parts as a whole, of which a small number (both two digits are number display parts below the decimal point). In the display device for the electric power company J1 including the above-mentioned number display part, each number display part, excluding the last second digit, has seven segments that can be turned on and off, and the lighting state of these parts is The plurality of first segment groups expressing desired numbers, and the second-lower digit number display section are composed of 12 segments that can be turned on and off, of which 5 segments are always turned off. By 2
a second segment group capable of expressing a street number; between the first lower digit number display section and the second lower digit number display section;
and a segment indicating a decimal point that can be turned on and off, and is arranged between and between the second-lower digit number display section and the third-lower digit number display section, and the seven segments In the watt hour meter display device, the gaps between the plurality of numeric display sections and the numeric display section including the 12 segments are equal or close to each other.

(Function) According to the present invention, one type of display can display the measured value to the second decimal place or the measured value to the first decimal place according to the multiplication factor of the electronic watt-hour meter. Therefore, it can be used in common regardless of the type of electronic watt-hour meter.
In addition, the numbers displayed above the decimal point and the numbers displayed below the decimal point on the display can be clearly read without relying on small decimal points.

(Example) Hereinafter, an example of the display device for a power meter of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention.

In FIG. 1, a display 1 of an electronic watt-hour meter includes six segment groups 100, so that a six-digit number can be displayed.
200, 300, 400° It consists of a number display section consisting of 500 and 600, and two decimal point segments 2 and 3, and the segment group 100, 200, 300.
At degrees 400, 500 and 600, the gaps between the segment groups are equal or close to each other.

The above six segment groups 100,200°300.40
Of 0,500 and 600, segment group 100 of the first digit, segment group 300 of the third digit, segment group 400 of the fourth digit, segment group 500 of the fifth digit, and segment group of the sixth digit Each group consists of seven segments, and by lighting multiple segments in combination, one
It is possible to display two numbers.

Furthermore, the segment group 200 of the second digit of the lower section can display the numbers in two ways as follows. That is, FIG. 2 is a detailed diagram of the segment group 200 forming the second digit shown in FIG. This consists of 12 segments, segments 201 to 212, and segments 208, 209, 210, 211 and 2.
12 is always turned off, and a control device (not shown) is used to display one number by lighting a plurality of segments 201, 202, 203, 205, 206, and 207 in combination. connected or segment 201
, 202, 203, 204 and 207 are always turned off, and segments 205. 206. 208.
209. Two types of number display methods are possible, in which one number is displayed by lighting a plurality of segments in combination within 210°, 211, and 212.

The operation of the embodiment of the present invention constructed in this way will be explained below with reference to FIGS. 2, 3, and 4.

FIG. 3 is for explaining the effect when the display 1 is used in an electronic watt-hour meter that is 1/10 times the composite transformation ratio or an integer power of 10; in this case, Because it is necessary to display the weighing value to the first decimal place,
Decimal point segment 2 is lit, and each segment group 10
The weighing value is displayed by lighting a combination of multiple segments among the blacked out segments in Figure 3 of 0,200°300.400,500 and 600, and also the 3rd decimal point segment and the 2nd place digit. Segment 201゜202.203,2 of segment group 200 of
04 and 207 are always turned off. Each segment group 100, 200° 300, 400, 500 and 60
Since the segments of the segment group 0 have equal or close to equal spacing, the segments 205, 206, 208, 209°, 210, .
211 and 212 represent numbers, and segments 201, 202, 203, 204, and 207 are always turned off. The gap between the numbers, that is, the first decimal place, is clearly longer than the mutual gap between other segment groups, that is, the mutual gap between the numbers represented by the other segment groups.

Figure 4 shows the effect when the same display device 1 shown in Figure 3 is used in an electronic watt-hour meter with double the composite transformation ratio. Since it is necessary to display, decimal point segment 3 is lit and a plurality of segments among the blacked out segments in FIG. The weighing value is displayed, and the decimal point segment 2 and segments 208, 209 of the second digit segment group 200,
210, 211 and 212 are always turned off. Each segment group 100°200.300,400,500
Since the segments 201, 202, 203, 204 of the segment group 200 are spaced at equal or close to equal intervals, the segments 201, 202, 203, 204 of the segment group 200
．． The numbers are represented by 205, 206 and 207,
Segments 208, 209, 210° 211 and 21
2 is always turned off, the gap between the number expressed in segment group 200, that is, the number in the first decimal place, and the number expressed in segment group 300, that is, the number in the first integer place, is larger than that in other segment groups. This is clearly longer than the mutual spacing between the numbers represented by the other segment groups.

In the embodiment described above, the numbers above the decimal point and the numbers below the decimal point of the weighing value can be clearly read without relying on the decimal point segment, which is smaller than the numeric display segment. It is possible to prevent erroneous meter readings such as reading 00125.1 when the meter is displayed as 0012.51, and the composite metamorphic ratio times, 1/10 times the composite metamorphic ratio times, and an integer of 10. Irrespective of the type of multiplication factor such as a power multiplication of
Further, even in the case of electronic watt-hour meters that need to display measured values to the first decimal place, it is possible to provide a display device for electronic watt-hour meters that can be used in common.

Note that the present invention is not limited to the embodiments described above, and can be implemented with various modifications without departing from the gist thereof.

[Effects of the Invention] According to the present invention described above, when reading a meter, the numbers above the decimal point and the numbers below the decimal point of the displayed measured value can be clearly read, and the types of multiplication factors of the electronic watt-hour meter can be clearly read. It is possible to provide a display device for a watthour meter that can be used regardless of the situation and is highly practical.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing one embodiment of a display device for electric energy company according to the present invention, FIG. 2 is a diagram for explaining in detail the configuration of the segment group of the second digit shown in FIG. 1, 3 and 4 are explanatory views of the effects of the embodiment of the present invention, and FIGS.
FIG. 7 is a configuration diagram showing examples of display devices of different conventional electronic watt-hour meters. l... Display unit, 2.3... Decimal point segment, 10
0... Segment group of the 1st digit, 200... Segment group of the 2nd digit, 300... Segment group of the 3rd digit, 400... Segment group of the 4th digit, 500...・
- Segment group for the 5th digit, 600...Segment group for the 6th digit. fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig fig.

Claims (1)

[Scope of Claims] A display device for a watthour meter, which has a numeric display section with a plurality of digits as a whole, of which at least two digits include a numeric display section below the decimal point, comprising: Each number display section, excluding the digits, has seven segments that can be turned on and off, and a plurality of first segment groups that express a desired number depending on the lighting state of these segments; The digit display section consists of 12 segments that can be turned on and off, and by always turning off 5 segments, 2
a second segment group capable of expressing a street number; and a segment group between the first lower digit number display part and the second lower digit number display part, and between the second lower digit number display part and the lower part. 3
and a segment indicating a decimal point that can be turned on and off, respectively arranged between the number display parts of the digits, a plurality of number display parts having the seven segments and a number having the twelve segments. A display device for a watt-hour meter in which the gaps between the display parts are equal or close to each other.