JP2000147014A - Simple type electric power indicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To observe approximate electricity bill, according to consumed power by individual electrical appliances with very simple usage and facilitate handling in general homes by making the overall body very light and compact. SOLUTION: In an apparatus case 1 having an apparatus plug 2 and an apparatus plug socket 3, an operation circuit 10 which calculates integral connection time, integral power and integral electricity bill. Also, an LCD indicator 4 is provided to cyclically indicate the calculated integral electricity bill figures and the unit sign 'yen', the integral power figures and the unit sign 'kWh' and the integral connection time figures and the unit sign 'hours' in this order and at a set time interval.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simplified electric power indicator which is mainly used for estimating a power rate or the like according to individual electric power consumption of various electric appliances owned by a general household. Things.

[0002]

2. Description of the Related Art Modern homes include televisions, refrigerators,
Usually, a plurality of electric devices such as a washing machine are owned. Conventionally, when electric power is consumed by the plurality of electric devices, the power consumption of the plurality of electric devices is added up,
In addition, there is employed means for numerically displaying the total integrated electric energy obtained by integrating the total electric energy on a large integrated electric energy meter installed in each household.

[0003]

However, when only the total integrated power is displayed on a large integrated watt-hour meter installed in each household as in the conventional case, the meter readings that are regularly patroled are provided. By looking at the contents described in the meter reading notice by the staff etc., the total integrated electric energy and the total electricity rate according to the electric energy can be known,
When taking measures to save electricity in consideration of the household economy, etc., there is a problem in that it is not possible to know even the standard of the integrated power amount, the integrated power-on time, and the integrated electricity rate of each electric appliance that the general household wants to know most.

[0004] The present invention has been made in view of the above-mentioned circumstances, and it is possible to know a standard of the electricity rate according to the electric power consumption of each electric appliance by an extremely simple usage.
It is an object of the present invention to provide a simple electric energy indicator which is very lightweight and compact as a whole and can be easily handled even in a general household.

[0005]

In order to achieve the above object, a simplified electric energy indicator according to the present invention is provided in a device case having a plug pluggable into an outlet and an outlet pluggable into an electrical device. Calculation means for calculating numerical values of a plurality of items including at least the integrated electricity rate among the accumulated power-on time, the accumulated power amount, and the accumulated electricity rate from the time when the plug is plugged into the outlet are provided. A single LCD display unit for cyclically displaying the calculated numerical values of a plurality of items in a predetermined order and at set time intervals is provided on a surface portion of the case. It is.

According to the simplified electric energy indicator of the present invention having the above-described configuration, a desired electric device is inserted and connected to the outlet of the device case, and then the plug of the device case is inserted and connected to the outlet. The value of at least one of the integrated power-on time and the integrated power amount of the individual electric device and the numerical value of the integrated electricity rate according to the integrated power amount are changed at a set time interval on the single LCD display unit from the point of insertion and connection. It is displayed by clicking, and by reading the numerical values displayed cyclically, it is possible to know the integrated power supply time of each electric device and / or the standard of the integrated electric energy and the integrated electric charge. In addition, since a single LCD display unit for displaying numerical values of a plurality of items is commonly used, the area occupied by the display unit can be small, the entire device can be reduced in weight and size, and handling and use is very easy. It is simple.

[0007] In the above-mentioned simplified electric energy display, as described in claim 2, when the electric equipment plugged in and connected consumes power on the LCD display unit, the operation display by blinking dots at one second intervals. In such a case, it is possible to always easily confirm whether or not the electric device is correctly connected and whether or not the indicator is functioning normally.

[0008] In the above-described simplified power display,
As described in claim 3, in accordance with the display of a plurality of items, a unit symbol corresponding to each display item, that is, “hour” for the integrated energizing time and “kW” for the integrated power amount.
h "and, in the case of the accumulated electricity rate," yen "are displayed at the same time, so that it is definitely clear what the currently displayed item is, regardless of the cyclic display of multiple items. You can know.

Further, in the above-mentioned simplified electric energy display, the display on the LCD display section is reset when the device plug is pulled out from the outlet and plugged into the outlet again. In the case of configuring, it is not necessary to provide a special reset button, and even if the reset button operation is forgotten, the plug insertion operation naturally performed to know the power consumption of a desired electric device. The reset function automatically and rationally operates to accurately measure and display the accumulated electric charge of the desired electric equipment.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing the appearance of a simplified electric energy display of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is a bottom view thereof. As shown in FIGS. 1 to 3, for example, a substantially box-shaped device case 1 including a case main body 1A and a lid cover 1B molded from a thermosetting resin such as a noril resin has a rear portion of the case main body 1A. A device plug 2 that can be inserted into an outlet (not shown) fixedly installed on a wall or the like is provided, and a case body 1
An outlet 3 into which various electric devices can be inserted is provided on the bottom of A.

A rectangular opening 1a is formed in the surface of the cover 1B of the equipment case 1.
a, a single LCD (liquid crystal) display 4 is fixedly held. As shown in FIG. 4, the LCD display 4 has a three-digit numerical display section 4A in which seven segments are arranged in a figure-eight shape.
In the operation display section 4B and the numerical display section 4A in which the dot blinks on the left side of the most significant digit, the unit symbols “Yen” and “kW” corresponding to a plurality of display items described later are displayed on the right side of the least significant digit.
It has a unit symbol display section 4C for displaying "h" and "time".

On the other hand, an arithmetic circuit (arithmetic means) 10 for calculating an integrated energizing time, an integrated power amount and an integrated power charge is provided in the equipment case 1. This arithmetic circuit 10
As shown in FIG. 5, a current transformer (CT) 5 for detecting an input current from the device plug 2, a rectifier 6 for converting the detected current into a DC voltage, and a rectified DC voltage The A / D converter 7 converts the current into the outlet, counts the cumulative energizing time from the time when the device plug 2 is plugged into the outlet, and measures the input current with the current transformer 5 to obtain a voltage of 100 V (fixed). A control unit 8 using a microcomputer that calculates an integrated power amount with a power factor of 100% (fixed) and calculates an integrated electricity rate {for example, 25 yen / kWh (fixed)} according to the integrated power amount. ing. In addition, a power supply unit 9 for generating a power supply necessary for the operation of the arithmetic circuit 10 by an input current from the device plug 2
Is provided.

The integrated energizing time, the integrated power amount, and the integrated electricity rate calculated by the arithmetic circuit 10 are determined in an order and a time interval preset in the control unit 8, for example, as shown in FIG. The corresponding numerical value is cyclically displayed on the numerical value display portion 4A of the LCD display 4 in the order of the integrated power amount and the cumulative energizing time, and at intervals of 3 seconds. The unit symbols are displayed in the order of “yen”, “kWh”, and “time” corresponding to the display items. Further, when the electric device connected to the outlet 3 consumes power, the operation display section of the LCD display 4 4B is configured so that dots are displayed blinking at one-second intervals.

Further, by pulling out the device plug 2 from the outlet and plugging it into the outlet again, the display on the LCD display 4 is reset and measurement display is performed from the beginning.

The numerical display unit 4 of the LCD display 4
In A, a three-digit numerical value is displayed in any of the integrated power-on time, the integrated power amount, and the integrated electricity rate, and the respective display methods and display ranges are set as follows. In the case of the cumulative energizing time; from 1 minute to 9 hours and 59 minutes ... Y. XX hours ・ From 10 hours to 99 hours 59 minutes ... YY. X time (move decimal point to next digit) 100 hours or more YYY time (decimal point is not displayed) In the case of accumulated electric energy; ・ 0.01 kWh to 999 kWh… move decimal point and display. In the case of an integrated electricity fee: ・ From 1 yen to 999 yen: The minimum unit is yen, and no decimal point is displayed.

If any one of the cumulative power-on time, the cumulative power amount, and the cumulative power rate becomes full (999), the counting of the cumulative power-on time, the calculation of the cumulative power amount, and the calculation of the cumulative power rate are performed. When the operation is stopped, the operation display is turned off, and when the accumulated energization time becomes full (999 hours), “yen” → “kWh” → “999” is cyclically displayed, and the accumulated electric energy is full ( When it becomes 999 kWh), "yen" → "999" → "time" is displayed cyclically, and when the total electricity charge becomes full (999 yen), it becomes "999" → "kWh" → "Time" is displayed cyclically.

Next, the measurement and display operation of the simplified electric energy display constructed as described above will be briefly described with reference to the flowchart of FIG. By plugging and connecting a desired electrical device into the device outlet 3 and then plugging and plugging the device plug 2 into the outlet, the reset function operates and all the displays on the LCD display 4 are reset (steps S21 and S22).

At the same time as inserting and connecting the device plug 2 to the outlet, it is determined whether or not the electric device connected to the device outlet 3 consumes power (step S23). Dots blink on the display unit 4B at one-second intervals (step S24), and the arithmetic circuit 10 counts the cumulative power-on time, calculates the cumulative power consumption, and calculates the cumulative power bill according to the cumulative power consumption. Works (step S25).

The integrated energizing time, the integrated power amount, and the integrated electricity rate calculated by the operation of the arithmetic circuit 10 are output from the control unit 8 to the LCD display 4, and the numerical value of the integrated electricity rate and the corresponding unit are displayed. The symbol "yen",
The numerical value of the integrated electric energy and the corresponding unit symbol “kWh”, the numerical value of the integrated energizing time and the corresponding unit symbol “time” are displayed in the order of the LCD display 4 at a time interval of 3 seconds. It is cyclically displayed on the numerical value display section 4A and the unit symbol display section 4C (steps S26 to S31).

As described above, by reading the accumulated electricity rate, accumulated electricity amount, and accumulated energization time cyclically displayed, it is possible to know the power consumption amount of each electric device and the standard of the electricity rate according to it. is there. Also, a single LCD
By displaying the characters on the display 4 cyclically, the font of the displayed numerical value can be kept large enough to prevent misreading and the like, and the area occupied by the display 4 can be reduced, so that the entire display can be reduced in weight and compact. Therefore, handling and use can be made very simple.

In the above-described embodiment, the LCD display 4 cyclically displays the three items of the integrated electric charge, the integrated electric energy, and the integrated energizing time. Two items, such as an integrated power amount or an integrated electric charge and an integrated energizing time, may be displayed cyclically.

Further, as in the above embodiment, when the device plug 2 is pulled out from the outlet and re-inserted and connected, a reset function for resetting all the displays is provided, so that a special reset button is not required. In addition, even if the reset operation is forgotten, it is possible to accurately measure and display the electric charge and the like of each electric device.

[0023]

As described above, according to the present invention,
Inserting and connecting the desired electrical device to the outlet of the device case, and then inserting and plugging the plug of the device case into the outlet, the operation is simple. And the value of the integrated electricity rate according to the integrated power amount are displayed cyclically on the LCD display unit at set time intervals, and the values are read to obtain the integrated power-on time and / or the integrated power amount for each electric device. It is possible to arbitrarily know a guideline between the power consumption and the integrated electricity charge, and it is possible to easily execute a power saving measure or the like based on the guideline. Moreover, by displaying the numerical values of a plurality of items cyclically on a single LCD display unit, the area occupied by the LCD display unit is reduced relative to the size of the font, so that the overall weight of the device is reduced and the size of the device is reduced. Therefore, there is an effect that the handling and use of the device for knowing the integrated electric charge and the like of each electric device can be made very simple.

In the case of adopting the configuration as described in claim 2, in addition to the above effects, in addition to whether or not the electric equipment is correctly connected and whether or not the display is functioning normally. Can always be easily confirmed.

Further, as described in claim 3, by adopting a configuration in which the unit symbol corresponding to each display item is simultaneously displayed in accordance with the display of the plurality of items, regardless of the cyclic display of the plurality of items, You can definitely read what the currently displayed item is.

Further, by providing the reset function as described in claim 4, it is not necessary to provide a special reset button, and even if the reset operation is forgotten, the desired electric power consumption of the electric equipment can be reduced. The resetting function automatically and rationally works by the plug-in operation naturally performed for the purpose of knowing, so that the accumulated electric charge of the desired electric equipment can be accurately measured and displayed.

[Brief description of the drawings]

FIG. 1 is a front view showing the appearance of a simplified electric energy display according to the present invention.

FIG. 2 is a side view of the display device.

FIG. 3 is a bottom view of the display.

FIG. 4 is an explanatory diagram of a configuration of a display unit in the display device.

FIG. 5 is a block diagram showing a configuration of an arithmetic circuit in the display device.

FIG. 6 is an explanatory diagram showing an example of specific display contents on the display.

FIG. 7 is a flowchart illustrating a measurement display operation of the display device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Equipment case 2 Equipment plug 3 Equipment outlet 4 LCD display (LCD display part) 4A Numerical display part 4B Operation display part 4C Unit symbol display part 10 Operation circuit (operation means)

Claims (4)

[Claims] 1. An apparatus case having a plug which can be plugged into an outlet and an outlet into which an electric device can be inserted, the cumulative power-on time since the plug was inserted into the outlet, the integrated power amount, and the integrated power rate. Among them, the arithmetic means for calculating the numerical values of a plurality of items including at least the integrated electricity rate is provided, and the surface portion of the device case includes the calculated numerical values of the plurality of items in a predetermined order, and A simplified electric energy display device comprising a single LCD display unit for cyclically displaying at set time intervals. 2. The simplified power amount according to claim 1, wherein the LCD display unit is provided with an operation display unit that blinks dots at one-second intervals when power is consumed by the plugged-in electrical equipment. display. 3. The simplified electric energy display according to claim 1, wherein, when the plurality of items are displayed, unit symbols corresponding to the respective display items are simultaneously displayed. 4. When the device plug is pulled out from the outlet and plugged into the outlet again and connected,
4. The simplified power indicator according to claim 1, wherein the display on the display is reset.