JPH0240877A - Plug socket device - Google Patents

Abstract

PURPOSE:To enable a regular recognition of the using state of a plug socket by judging the presence of an excess current based on the output level of a current measuring circuit, and providing a display selection driving circuit for driving and controlling an excess current display circuit based on the obtained result to the current measuring circuit. CONSTITUTION:A current measuring circuit 4 is provided with a display selection driving circuit 6, and this display selection driving circuit 6 judges the presence of an excess current based on the output level of the current measuring circuit 4 and selectively drives any of three pilot lamps 5A-5C of an excess current display circuit 5 based on the judgment result. Namely, the pilot lamp (red) 5A is lighted when a current exceeding the allowable current of a plug socket 1 flows to the plug socket 1, the pilot lamp (yellow) 5B is lighted when a current close to the allowable current flows, and the pilot lamp (green) 5C is lighted when a current sufficiently smaller than the allowable current flows. Hence, the using condition of the plug socket 1 can be regularly recognized.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an outlet device, and particularly to an outlet device to which a plurality of electrical devices can be connected.

[Conventional technology]

Conventionally, electrical outlets have been specified with a certain current-carrying capacity value. Normally, fuses and other circuit components work to maintain the operating condition below this allowable value.

[Problem to be solved by the invention]

However, in the above conventional example, in a power supply circuit that simultaneously supplies power to multiple devices from a single power source, when multiple devices are concentrated and connected to a specific, easy-to-use terminal power branch circuit, are relatively common. – Situations often occur in which overcurrent is applied to electrical outlets.

In this case, even if a current exceeding the current capacity of the outlet was flowing, the user would not be able to tell. Therefore, it is often the case that an abnormality is noticed only when the electric wire or the like overheats as a result of continuing to flow an excessive current.

In addition, there are relatively many cases where fires occur without being noticed.

[Purpose of the invention]

SUMMARY OF THE INVENTION An object of the present invention is to improve the disadvantages of the conventional example, and particularly to provide an outlet device that can accurately check whether there is an overcurrent in the outlet during use.

[Means for Solving the Problems] The present invention includes an electrical outlet having one or more outlets, a current measuring circuit and an overcurrent display circuit for detecting an overcurrent state of the electrical outlet, and a current side measurement circuit. The current measurement circuit is provided with a display selection drive circuit that determines whether there is an overcurrent based on the output level of the circuit and controls the overcurrent display circuit based on the result of the determination. This aims to achieve the above-mentioned purpose.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIG.

The embodiment of FIG. 1 has one or more outlets IA, I.
B. It includes an outlet 1 equipped with an IC, a current measurement circuit 4 that detects the overcurrent usage state of the outlet 1, and an overcurrent display circuit 5 that displays it. Reference numeral 10 indicates a power supply circuit.

The current measurement circuit 4 is also provided with a display selection drive circuit 6. This display selection drive circuit 6 has an overcurrent determination function that determines the presence or absence of an overcurrent based on the output level of the current measurement circuit 4, and three indicator lights 5A and 5B of the overcurrent display circuit 5 based on the result of the determination. .

It has a display selection driving function for selectively driving one of the 5C.

As described above, the overcurrent display circuit 5 includes three indicator lights 5A,
Equipped with 5B and 5C. In other words, to outlet 1,
If the current exceeding the allowable current capacity of the outlet 1 is flowing, the indicator light (red) 5A will turn on, and if the current close to the allowable current capacity of the outlet 1 is flowing, the indicator light (red) will turn on.
When a current sufficiently smaller than the allowable current capacity of the outlet 1 is flowing through the outlet (yellow) 5B, the indicator light (green) 5C lights up.

This makes it possible to easily recognize the usage status of the outlet l.

〔Effect of the invention〕

As described above, according to the present invention, since the current status of the outlet in use is displayed by the overcurrent display circuit,
To provide an unprecedented and excellent outlet device that can always recognize the usage status of an outlet and thereby distribute the load as necessary, thereby significantly increasing the durability of the outlet. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing one embodiment of the present invention. 1... Outlet, IA, IB, IC... Outlet, 4... Current measurement circuit, 5... Overcurrent display circuit,
6...Display selection drive circuit. Figure 1

Claims (1)

[Claims] (1) An electrical outlet having one or more outlets, a current measuring circuit and an overcurrent display circuit for detecting an overcurrent state of the electrical outlet, and detecting an overcurrent based on the output level of the current measuring circuit. In addition to determining the presence or absence of
An outlet device characterized in that a display selection drive circuit that drives and controls the overcurrent display circuit based on the result of the determination is provided alongside the current measurement circuit.