JP2999362B2 - Multifunctional electricity display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-function electric quantity display device, and more particularly to an improvement and a multi-function display function of an electric quantity display device.

[0002]

2. Description of the Related Art A conventional general electric quantity display device displays only a single type of electric quantity, such as an ammeter or a voltmeter. In particular, the wattmeter only displays the power, and there is no display that displays the amount of power (integrated power). Further, the conventional display device has a single function only for displaying the electric quantity, and at present there is no display device which can be used for any other purpose.

[0003]

As described above, since the conventional electric quantity display device is a simple display, even if a certain electric quantity is displayed, it is necessary to calculate it to know the other electric quantity. . For example, in the case of the power display, the power consumption of the load device cannot be known from the power display alone, and it is necessary to calculate the power consumption of the load device from the displayed power value.

In Japan, the general working voltage is 10
Since the voltage is 0 V, the driving of the circuit element of the conventional electric quantity display device is based on 100 V. Therefore, there are drawbacks that the voltage fluctuates with time and that the device does not operate properly under a power supply voltage condition different from 100 V.

[0005] In addition, since a special wiring is required to connect the electric quantity display device to a power supply, it has been difficult to use it in ordinary households.

Further, the standard of the combination of the plug on the load device side and the outlet on the power supply side differs from country to country (in the sense of including the concept of European region).
Therefore, there is a problem that a plug on a foreign load device side may not be compatible with a power supply side outlet conforming to the Japanese JIS standard.

In some countries, a plurality of power outlets having different voltages are provided in a room, and the voltage value may not be displayed on the outlets. Under these conditions, when an electrical device manufactured in Japan with a standard of 100 V is used, an excessive voltage is applied, and there is a risk that an accident such as burning of the device may occur.

[0008] None of the conventional electric quantity display devices have a function corresponding to such special electric equipment use conditions.

An object of the present invention is to provide an electric quantity display device which can simultaneously display a plurality of types of electric quantities as desired and which can be used even in ordinary households by simple operation.

Another object of the present invention is to provide an electric quantity display device capable of adapting to fluctuations and / or changes in power supply voltage.

Still another object of the present invention is to provide an electric quantity display device having a wiring tap function as well as an electric quantity display function.

[0012]

According to the present invention, at least two electric quantity indicators including at least a power quantity indicator are arranged on a display panel of a housing, and at least two electric quantity indicators are arranged on a tap panel of the housing. Two or more outlets of different types are arranged according to the standards of different countries, these outlets are connected to the power plug in parallel with each other, and the outlet and the power plug are connected. The gist of the connection is that the above-mentioned electric quantity indicators are connected in a branch line in parallel.

[0013]

When it is desired to know the specifications of the power supply, a desired amount of electricity is simultaneously displayed on each display by connecting a power supply plug to a power supply outlet. When the user wants to know the specifications of the load device, the user can connect the power plug to the power outlet and connect the load device to the outlet of the tap panel, and the amount of electricity related to the load device is displayed on the display.

[0014]

FIG. 1 shows an example of an electric quantity display device according to the present invention. On the display panel on the upper surface of the housing 1, three electric quantity indicators 2a to 2c are arranged. More specifically, a power / power amount display 2a, a voltage display 2b, and a current display 2c
And are intensively arranged. However, this is only an example, and the type, number, combination, and the like of the amount of electricity to be displayed can be appropriately selected according to the application. In addition to the above, the display panel is provided with a leakage indicator light 3, and further provided with a changeover switch 4 for switching the display on the power / power amount display 2a. Although digital display is adopted in this example because it is intended for use in ordinary households, it is a matter of course that analog display may be used.

On the tap panel on the side of the housing 1, four load device connection outlets 5a and 5b are arranged. In the illustrated example, a two-type outlet is used, but the present invention is not limited to this. For example, all outlets may be of different types. Also, the number of outlets can be appropriately selected according to the application. A power supply plug 6 is connected to an electric circuit in the housing 1.

FIG. 2 shows an example of the electrical configuration of the electrical quantity display device of the present invention having the above-described external configuration. Four load device outlets 5a and 5b are connected to the power plug 6 in parallel with each other. The voltage indicator 2b is connected between the outlet for the load device and the power plug 6 via a voltage detection circuit 13, and the current indicator 2c is connected to the voltage indicator 2b via the current detection circuit 12. In parallel,
It is connected to the same connection. The leakage indicator 3 is connected to the same line via a leakage detection circuit 14.

The power / power amount indicator 2a has a changeover switch 4
, And is further connected to the voltage detection circuit 13 and the current detection circuit 12 in parallel. The power calculation circuit 15 calculates the power and the power amount from the voltage value and the current value detected by the voltage detection circuit 13 and the current detection circuit 12. One of the calculation results is selectively displayed on the current / current amount display 2a by switching the switch 4.

A transformer circuit 11 is connected to the power supply plug 6, and this circuit sets the power from the power supply to an appropriate constant voltage, for example, 5V and 10V, and supplies the power for driving each circuit element. It is for.

[0019]

According to the present invention, since two or more electricity quantity indicators including at least the electricity quantity indicator are arranged on the display panel, a plurality of kinds of electricity quantities including the electricity quantity can be changed as desired. Can be displayed. Moreover, since these electric quantity indicators are connected in parallel with the connection line connecting the power supply side plug and the load equipment side outlet, a plurality of types of electric quantities can be displayed at the same time without using special mode switching means. You can.

Further, according to the present invention, since the circuit elements are connected to the power plug 6 via the transformer circuit 11, even if the power supply voltage fluctuates or changes, it adapts without any problem. can do.

Further, according to the present invention, since two or more outlets are provided on the tap surface (if necessary, of different models), a wiring tap function can be exhibited in addition to the electricity quantity display function.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the overall configuration of an electric quantity display device of the present invention.

FIG. 2 is a circuit diagram showing the electrical configuration.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Housing 2 Electric quantity indicator 3 Electric leakage indicator light 4 Power / electricity amount switch 5 Outlet for load equipment 6 Power supply plug 11 Transformer circuit 12 Current detection circuit 13 Voltage detection circuit 14 Electric leakage detection circuit 15 Power calculation circuit 16 Power supply plug

Claims (2)

(57) [Claims] 1. The display panel of the housing has at least
Also, two or more electricity quantity indicators including an electricity quantity indicator are arranged, and at least two electricity quantity indicators corresponding to different national standards are arranged on the tap panel of the housing. Outlets are arranged, these outlets are connected to the power plug in parallel with each other,
A multifunctional electricity quantity display device, wherein the electricity quantity indicator is connected in parallel to a wire connecting an outlet and a power plug. 2. The electric quantity indicator includes at least a power indicator and a power quantity indicator, and these indicators are connected to the connection via a changeover switch and a power integrating circuit. The display device according to claim 1, wherein: