KR200205467Y1 - A connecter for isolating electromagnetic wave - Google Patents

Abstract

The present invention relates to an electromagnetic shielding outlet for removing electromagnetic waves generated during the operation of electrical appliances by grounding circuits configured inside the electrical outlet and easily confirming the removal state of the electromagnetic waves. A power supply unit (10) comprising a reference voltage terminal (11) for supplying power supplied through the electrical appliance, an effective voltage terminal (12), and a ground terminal (13) connected to a ground terminal of the electrical appliance; Circuit stabilizer for stabilizing the circuit from the load residual electromagnetic wave applied through the ground terminal 13 of the power supply unit 10 and the overload generated during the circuit operation from the ground terminal of the electrical appliance operated by receiving power from And a switch selectable to connect any one of the reference voltage terminal 11 and the effective voltage terminal 12 to the circuit stability unit 20. When the switching switching unit 30 and the switching element of the switching switching unit 30 are configured to select a terminal having a grounding function (0V) among the reference voltage terminal 11 and the effective voltage terminal 12, the electromagnetic wave is blocked. It is characterized in that it comprises an electromagnetic wave warning display unit 40 for displaying a signal indicating that the electromagnetic wave is generated when the signal is displayed and the ground function is selected.

Description

Electromagnetic Interception Receptacle {A Connecter for isolating electromagnetic wave}

The present invention relates to an electromagnetic shielding outlet for blocking electromagnetic waves generated when using an electrical appliance, and in detail, the electromagnetic wave generated during operation of the electrical appliance is grounded through a ground circuit configured inside the electrical outlet to remove and remove the electromagnetic wave. The present invention relates to an electromagnetic shielding outlet for easily checking with the naked eye.

While the use of electrical appliances, electromagnetic waves are inevitably generated and research data indicating that the generated electromagnetic waves are harmful to the human body continues to be reported, and researches for blocking the harmful electromagnetic waves are being actively conducted. Electromagnetic waves generated from general household electrical appliances are classified into electric fields generated from a large supply voltage and magnetic fields generated from electric currents flowing through the wires. The electric fields can be cut off mostly through the grounding of the electric appliances, and the magnetic fields flow through the wires. Background Art It is generally known to cancel a magnetic field generated by canceling the generated magnetic field by forming a current opposite to the current. As mentioned above, although the electric field in the electromagnetic wave can be mostly cut off through the grounding of the electrical appliance, the connection position of the outlet terminal even though the conventional outlet for supplying power to the electrical appliance does not include the grounding function or the grounding function is included. There is a problem that the user can not clearly identify whether or not the ground is grounded by the presence or absence of ground.

In order to solve the above problems, there is an electromagnetic wave blocking plug for a grounding outlet filed by the applicant of the Korean Utility Model Registration No. 20-2000-0000375 dated January 7, 2000. Applicant's prior application electromagnetic shielding plug for grounding outlets is generated from electrical and electronic products by inducing grounding from the electromagnetic shielding plug which is plugged into the outlet regardless of whether the plug of the electrical / electronic product is properly plugged into the outlet. It was configured to cut off electromagnetic waves, and the ground rod was installed to solve the above problem by allowing the user to directly check whether there is a ground according to the lighting / off of the light emitting lamp when the user touches a part of the body to the ground rod.

However, the above-mentioned electromagnetic shielding plug for the grounding outlet has a problem in that a part of the body needs to be contacted with the grounding rod in order to visually check whether the light emitting lamp is turned on according to the blocking of electromagnetic waves.

Therefore, the present invention has been devised to solve the shortcomings of the above-mentioned electromagnetic wave blocking plug, and the purpose of the present invention is to eliminate the user's discomfort as well as to prevent the user's physical contact when checking whether the ground is grounded, and even in a building without a grounding facility. To make it available.

In order to achieve the above object, the electromagnetic shielding outlet according to the present invention has a reference voltage terminal and an effective voltage terminal for supplying power supplied through an external power line to an electrical product, and a ground terminal connected to a ground terminal of the electrical product. And a circuit stabilizer for stabilizing a circuit from an overload generated during a circuit operation and a load residual electromagnetic wave applied through a ground terminal of a power supply from a ground terminal of an electrical appliance operated by receiving power from the power supply. And a switching switching unit comprising a switching element selectable so that any one of the reference voltage terminal and the effective voltage terminal and the circuit stabilizer are connected, and the switching element of the switching switching unit has a grounding function among the reference voltage terminal and the effective voltage terminal. Signal to indicate that electromagnetic waves are cut off when selecting terminal with (0V) When displayed, and select the terminal does not have a ground function is configured to include an electromagnetic warning display unit to display the signal indicating that the electromagnetic wave is generated.

1 is an external perspective view of an outlet for electromagnetic interference according to an embodiment of the present invention,

2 is a schematic block diagram of an electromagnetic shielding outlet according to Embodiment 1 of the present invention;

3 is a ground circuit diagram applied to the electromagnetic shielding outlet according to Embodiment 1 of the present invention,

4 is a flowchart illustrating the operation of the electromagnetic shielding outlet according to the first embodiment of the present invention.

5 is a ground circuit diagram applied to an electromagnetic wave shielding outlet according to Embodiment 2 of the present invention.

* Brief description of symbols for the main parts of the drawings

10: power supply unit 11: reference voltage terminal

12: Effective voltage terminal 13: Ground terminal

20: circuit security government 30: switching switching unit

31: switch 40: electromagnetic wave warning display

41: constant voltage setting section 42: electromagnetic wave warning section

43: operation signal transmission unit 44: electromagnetic wave detection unit

50: external ground

The electromagnetic shielding outlet according to the present invention is a power supply for the load residual electromagnetic wave that is the cause of the electromagnetic wave by simply operating a switching element attached to the outside of the electromagnetic shielding outlet while the user visually checks the electromagnetic wave generated while using household electrical appliances. It is to block electromagnetic waves by connecting to a terminal having a reference voltage (0V) provided from the line and grounded.

In addition, when the reference voltage is not provided from the power line, the load residual electromagnetic wave may be grounded and the electromagnetic wave may be blocked by connecting the conductor of the external ground portion protruding to the outside of the electromagnetic shielding outlet to the external grounding device.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example 1

1 is an external perspective view of an electromagnetic wave blocking outlet according to an embodiment of the present invention, Figure 2 is a schematic diagram of an electromagnetic wave blocking outlet according to an embodiment of the present invention, Figure 3 is an electromagnetic shield according to an embodiment of the present invention This is a ground circuit diagram applied to the outlet.

Grounding receptacle for grounding according to an embodiment of the present invention is a circuit for stabilizing the circuit from the power supply unit 10 is supplied with AC power from an external power line, and the load residual electromagnetic waves transmitted from the ground terminal of the electrical appliance Switching unit 30 for selecting a groundable terminal of the power supply terminal 10 of the power supply unit 10 to ground the stabilizer 20, the load residual electromagnetic wave, and when the electromagnetic wave is cut off and the electromagnetic wave is generated External grounding unit 50 for grounding the load residual electromagnetic wave to the external grounding device when there is no terminal having the electromagnetic wave warning display unit 40 and the terminal having a reference voltage (0V) that can serve as a ground in the power supply unit 10. It is configured to include).

The power supply unit 10 is generally supplied with a reference voltage terminal 11 to which a reference voltage (0V) is supplied among AC power supplied from an external power line, and a voltage having a relative magnitude with respect to the reference voltage (0V) is supplied. It consists of an effective voltage terminal 12 and a ground terminal 13 for cutting off the electric field of electromagnetic waves by grounding the load residual electromagnetic waves generated from electrical appliances. The reference voltage terminal 11 and the effective voltage terminal 12 may be changed in position depending on how the power supply unit 10 is connected to an external power line. Assuming that terminal B is an effective voltage terminal 12, it demonstrates. The reference voltage terminal 11 and the effective voltage terminal 12 is connected to the voltage terminal provided in the plug of the electrical appliance to supply power, and the ground terminal 13 is connected to the ground terminal of the electrical appliance to load the electrical appliance Residual electromagnetic wave is supplied.

The circuit stabilizer 20 converts the load residual electromagnetic wave of the electrical appliance supplied through the ground terminal 13 of the power supply unit 10 from the ground terminal of the electrical appliance through the switching unit 30 to the reference voltage terminal 12. A bypass resistor R2 for transmitting to the circuit, and a protective capacitor C3 for protecting the circuit from an overload.

The switching switching unit 30 is composed of a switching element for selecting the reference voltage terminal 11 having a 0V voltage that can be grounded among the reference voltage terminal 11 and the effective voltage terminal 12, the circuit stability ( 20) It acts to block the electromagnetic wave by grounding the load residual electromagnetic wave transmitted from Since the position of the reference voltage terminal 11 and the effective voltage terminal 12 may be changed according to the method of connecting the power supply unit 10 and the external power line as described above, a switching element is selectively selected between the two terminals. Be sure to In the embodiment of the present invention, the terminal selectable by the switching element is the first terminal 32a, which is the reference voltage terminal 11, the third terminal 31c, which is the effective voltage terminal 12, and the first terminal 31a, In the neutral position between the three stages 31c, the two stages 31b are configured to have all three stages so as not to be connected to either of the two terminals. The reason why the second stage 32b is provided is that it is impossible to ground the load residual electromagnetic wave through the reference voltage terminal 12 when both terminals of the power supply unit 10 have an effective voltage 110V of a predetermined magnitude. This is to ground the load residual electromagnetic wave through the external ground unit 50. The switching element may be implemented to be a switching switch 31 for the user's convenience of operation to be protruded to the outside of the outlet.

As shown in FIG. 2, the electromagnetic wave warning display unit 40 includes an electromagnetic wave warning unit 42 for displaying the presence or absence of electromagnetic wave blocking, and a constant voltage setting unit 41 for supplying a constant voltage to the electromagnetic wave warning unit 42. The operation signal transmission unit 43 transmits the electromagnetic wave warning application signal generated from the load residual electromagnetic wave of the electrical appliance to the electromagnetic wave warning unit 42. As shown in FIG. 3, the constant voltage setting unit 41 includes a plurality of diodes D1 and D2, a resistor R1, a zener diode ZD1, and a capacitor C1. Supply constant voltage to). The operation signal transmitter 43 is composed of a plurality of diodes D3 and D4, a resistor R5, a coil L1, and a capacitor C2, and a load residue generated from an electrical product and transmitted through a ground terminal. The electromagnetic wave is transmitted to the electromagnetic wave warning unit 42 to serve as a warning light of the electromagnetic wave warning unit 42, wherein the load residual electromagnetic wave transmitted serves as an operation authorization signal for operating the electromagnetic wave warning unit 42. do. The electromagnetic wave warning unit 42 includes a light emitting diode D5 and a plurality of transistors Q1 and Q2. The cathode of the light emitting diode D5 is connected to the collector terminal of the transistor Q1. It is only lit when the load residual electromagnetic wave is applied to the base terminal of Q1) and the transistor Q1 is operated.

The light emitting diode D5 of the electromagnetic wave warning display unit 40 is turned off when the load residual electromagnetic wave of the electrical appliance is supplied to the reference voltage terminal 11 through the circuit stabilizer 20 and the switching switching unit 30. It indicates that the electromagnetic wave is blocked by keeping the signal, and when the load residual electromagnetic wave is supplied to the effective voltage terminal 12 instead of the reference voltage terminal 11, the lamp is turned on to indicate that electromagnetic waves are generated since the ground is not made. The operation of the electromagnetic wave warning display unit 40 is a transistor Q1 for operating the electromagnetic wave warning display unit 40 when the load residual electromagnetic wave is connected to the reference voltage terminal 11 through the circuit stability unit 20 and the switching switching unit 30. The light emitting diode D5 is not turned on because no power is supplied to the base terminal of the base terminal. When the load residual electromagnetic wave is connected to the effective voltage terminal 12 instead of the reference voltage terminal 11, the voltage of the effective voltage terminal 12 is increased. Since the load residual electromagnetic wave is greater than the voltage of the load residual electromagnetic wave, the load residual electromagnetic wave is applied to the base terminal of the transistor Q1 of the electromagnetic wave warning display unit 20 to emit light from the light emitting diode D5.

The external ground unit 50 includes a bypass resistor R3 and an overload protection capacitor C4 having the same configuration as the circuit stabilizer 20, and has a ground function (0V) at the power supply unit 10. If there is no voltage terminal, it serves to ground the load residual voltage to an external grounding device. The external grounding device may be obtained through a ground wire installed in a home or a conductor capable of performing other grounding roles. One end of the external grounding portion 50 may protrude to the outside of the electromagnetic shielding outlet to be connected to the external grounding device.

Hereinafter, the operation and action of the present invention made of the above configuration will be described with reference to FIG.

4 is an operation flowchart of the electromagnetic wave blocking outlet of the present invention. First, in step S110, the user connects the electromagnetic wave blocking outlet of the present invention to a main outlet to which power is supplied, and the electric wave blocking power is supplied in step S120. Connect the appliance to the outlet.

When power is supplied to the electrical appliance through the electromagnetic shielding outlet, it is checked in step S130 that the light emitting diode of the electromagnetic wave warning display unit 40 is turned on. If the light emitting diode is turned on, electromagnetic waves are generated, so that the position of the switching element of the switching switching unit 30 is changed to ground the load residual electromagnetic waves of the electric product generating the electromagnetic waves. It ends. The position of the switching element is a first stage 32a and a third stage 31c connecting one of the reference voltage terminal 11 and the effective voltage terminal 12 of the power supply unit 10 and the circuit stabilizer 20 to each other. And two stages 31b which are not connected to any one terminal between the first stage 31a and the third stage 32c. When the light emitting diode is turned on in the step S130, if the switching element is located in the first stage 31a, the switching element is changed to the third stage 31c through the steps S140 and S150, and the switching element is placed in the third stage 31c. If located, the switching element is changed to the first stage 31a through steps S240 and S250 to check whether the light emitting diode is still lit in step 160. In addition, if the switching element is in the second stage 31b, the switching element is changed to the first stage 31a in step S260, and the light emitting diode is checked in step S270. If the light emitting diode is turned off, the ground is established and the electromagnetic wave is cut off, and if the light is continuously turned on, the switching element is changed to three stages 31c in step S280 and the light emitting diode is checked in step S160.

When the light emitting diode is turned off in step 160, the electromagnetic wave is shut off. If the light emitting diode is continuously turned on, the voltage having the reference voltage (0 V) for the grounding function is provided at the two terminals 11 and 12 of the power supply unit 10. Since the terminal is not provided, the switching element is changed to the second stage 31b in step S170 in order to ground the load residual electromagnetic wave of the electrical appliance, and in step S180, the external grounding unit 50 is connected to an external grounding device having a grounding function. do.

The external grounding device allows the load residual electromagnetic wave to be stably grounded via the external grounding part 50. When the grounding wire installed in the home or the grounding wire is not provided in the home, the external grounding device is connected to the ground such as a water pipe. It can be implemented using a conductor.

After connecting the external grounding unit 50 to the external grounding device in step S180 and confirms whether the light-emitting diode is turned on in step S190. If the light emitting diode is turned off, the grounding is completed. If the light emitting diode is continuously turned on, the external grounding device does not have a grounding function. Therefore, the process returns to step S180 to connect the external grounding unit 50 to another type of external grounding device. Repeat the process to confirm.

Through the above process, the user can visually check whether the electromagnetic wave is generated and can easily block the generated electromagnetic wave by manipulating a switch.

Example 2

The electromagnetic shielding outlet of the above-described embodiment 1 is an indication method of the electromagnetic shielding, the electromagnetic wave warning unit 42 wired through the operation signal transmission unit 43 when the load residual electromagnetic wave is not grounded to the reference voltage terminal having 0V. The light emitting diode is turned on so that the user can easily check whether the electromagnetic wave is blocked. When the reference voltage is not provided from the power line, the conductor of the external ground part 50 protruding to the outside of the electromagnetic shielding outlet is By connecting to the external grounding device, the load residual electromagnetic wave is grounded to block the electromagnetic wave.

In another embodiment of the present invention, if the electromagnetic wave is detected through the electromagnetic wave sensing unit 44 which can wirelessly receive the electromagnetic wave generated during the use of the electrical appliance is the operation to operate the electromagnetic wave warning unit 42 It is configured to act as a signal. In addition, even when there is no terminal having a reference voltage (0V) that can serve as a ground in the power supply unit 10, unlike the first embodiment, the load residual electromagnetic waves are not passed through the external ground unit 50, but the electromagnetic wave warning display unit ( 40) to be partially grounded.

5 is a ground circuit diagram applied to an outlet for shielding electromagnetic waves according to another embodiment of the present invention. In describing the present embodiment, a description of the same configuration and operation as that of the first embodiment will be omitted.

The electromagnetic shielding outlet according to the second embodiment includes a power supply unit 10 to which AC power is supplied from an external power line, and a circuit stabilizer for protecting a circuit from load residual electromagnetic waves and an overload transmitted from a ground terminal of an electrical appliance. ), A switching switching unit 30 for selecting a groundable terminal among the power terminals 11 and 12 of the power supply unit 10 to ground the load residual electromagnetic wave, and when the electromagnetic wave is cut off, the electromagnetic wave is turned off. It is configured to include an electromagnetic wave warning display unit 40 that is turned on when it is generated.

The power supply unit 10 includes a reference voltage terminal 11 to which a reference voltage (0V) is supplied among AC power supplied from an external power line, and a voltage having a relative magnitude with respect to the reference voltage (0V) is supplied. It consists of an effective voltage terminal 12 and a ground terminal 13 for cutting off the electric field of electromagnetic waves by grounding the load residual electromagnetic waves generated from electrical appliances. The ground terminal is installed on the wall and is connected in series through a wall outlet ground terminal 14 connected to the ground through a resistor R7.

The circuit stability unit 20 is a reference voltage terminal (through switching switching unit 30 to be described later to the load residual electromagnetic wave of the electrical appliance supplied through the ground terminal 13 of the power supply unit 10 from the ground terminal of the electrical appliance ( 12) consists of a resistor (R2) and a capacitor (C3) (C2) for transmission to and protect the internal circuit of the outlet from overload. In addition, a surge protector Uf may be provided between the power supply and the internal circuit to protect the internal circuit from the surge voltage generated at the reference voltage terminal 11 and the effective voltage terminal 12.

The switching switching unit 30 is composed of a switching element for selecting the reference voltage terminal 11 having a 0V voltage that can be grounded among the reference voltage terminal 11 and the effective voltage terminal 12, the circuit stability ( 20) It acts to block the electromagnetic wave by grounding the load residual electromagnetic wave transmitted from In the second embodiment of the present invention, as in the first embodiment, the terminals selectable by the switching element include the first terminal 32a of the reference voltage terminal 11, the third terminal 31c of the effective voltage terminal 12, In the neutral position between the first stage 31a and the third stage 31c, the second stage 31b is configured to have all three stages so as not to be connected to any one of the two terminals. The reason why the second stage 32b is provided is that it is impossible to ground the load residual electromagnetic wave through the reference voltage terminal 12 when both terminals of the power supply unit 10 have an effective voltage 110V of a predetermined magnitude. This is to ground the load residual electromagnetic wave through the electromagnetic wave warning display unit 40.

As shown in FIG. 2, the electromagnetic wave warning display unit 40 includes an electromagnetic wave warning unit 42 for displaying the presence or absence of electromagnetic wave blocking, and a constant voltage setting unit 41 for supplying a constant voltage to the electromagnetic wave warning unit 42. In addition, the electromagnetic wave generated by the electrical product is detected by the electromagnetic wave detection unit 44 for transmitting an operation authorization signal for operating the electromagnetic wave warning unit 42 only when the electromagnetic wave is detected. As shown in FIG. 5, the constant voltage setting unit 41 includes a plurality of diodes D1 and D2, a resistor R1, a zener diode ZD1, and a capacitor C1. Supply constant voltage to). The electromagnetic wave detector 44 is configured as an antenna to wirelessly detect electromagnetic waves generated from electrical appliances and transmit the electromagnetic wave to the electromagnetic wave warning unit 42 to emit a warning light of the electromagnetic wave warning unit 42. The sensed electromagnetic wave serves as an operation application signal for operating the electromagnetic wave warning unit 42. The electromagnetic wave warning unit 42 includes a light emitting diode D5, a plurality of transistors Q1, Q2, and a diode D3, and the cathode of the light emitting diode D5 is connected to the collector terminal of the transistor Q1. The light is only turned on when electromagnetic waves are applied to the base terminal of the transistor Q1 so that the transistor Q1 is operated.

The light emitting diode D5 of the electromagnetic wave warning display unit 40 is grounded when the load residual electromagnetic wave of the electrical appliance is supplied to the reference voltage terminal 11 through the circuit stabilizer 20 and the switching switching unit 30. By keeping the light off state, it indicates that the electromagnetic wave has been cut off, and when the load residual electromagnetic wave is supplied to the effective voltage terminal 12 instead of the reference voltage terminal 11, it indicates that the electromagnetic wave is generated by turning on the light emitting diode D5. Display. The operation of the electromagnetic wave warning display unit 40 is grounded when the load residual electromagnetic wave is connected to the reference voltage terminal 11 through the circuit stabilizer 20 and the switching switching unit 30, so that electromagnetic waves are not generated. The light emitting diode Q1 is not turned on because the operation application signal is not supplied to the base terminal of the transistor Q1 for operating the transistor Q1, and the load residual electromagnetic wave is connected to the effective voltage terminal 12 instead of the reference voltage terminal 11. When the voltage of the effective voltage terminal 12 is greater than the voltage of the load residual electromagnetic waves, grounding is not performed, and thus electromagnetic waves are generated, and the generated electromagnetic waves are sensed by the antenna of the electromagnetic wave detector 44 and the electromagnetic wave warning display unit 20 is applied. Since it is applied to the base terminal of the transistor Q1, the light emitting diode D5 emits light.

If the voltage supply terminal having a grounding function (0 V) is not provided in the power supply unit 10, the supply voltage is set to a constant voltage when the switching switch 31 of the switching switching unit 30 is set to two neutral stages. Since the load residual electromagnetic wave is grounded during the reference voltage having a half period generated by passing through the half-wave diode (D1) (D2) of the unit 41, it has an effect of blocking electromagnetic waves in part. According to an embodiment of the present invention, even at a voltage terminal having no grounding function, at least about 50% of the load residual electromagnetic waves are blocked.

Hereinafter, the operation and action of the electromagnetic shielding outlet according to the second embodiment of the present invention made of the above configuration.

Operation and action of the electromagnetic shielding outlet according to the second embodiment, the user blocks and confirms the electromagnetic waves through the same process as in the first embodiment shown in FIG. However, in the second embodiment, since the external ground unit 50 is not provided, when the switching element is changed to the second stage in step S170, the input voltage supplied through the two terminals 11 and 12 of the power supply unit is a constant voltage setting unit. Since the reference voltage is provided for half a period by being half-waved by the diodes D1 and D2 of (41), the load residual electromagnetic wave is grounded during the half period, and the electromagnetic wave is partially cut off.

As described above in the first and second embodiments, the electromagnetic shielding outlet of the present invention can be easily connected to a switching element attached to the outside of the electromagnetic shielding outlet while the user visually checks the electromagnetic wave generated while using the household electrical appliance. By operating the load residual electromagnetic wave, which is the cause of the electromagnetic wave, by connecting it to a terminal having a reference voltage (0 V) provided from the power supply line and grounding it, the electromagnetic wave is cut off, and in the case where the reference voltage is not provided from the power supply line, By connecting the conducting wire of the external grounding portion 50 protruding to the outside of the outlet to the external grounding device, the electromagnetic wave is blocked by grounding the load residual electromagnetic waves, or the connection between the external grounding portion 50 and the external grounding device is not easy. Even if the load residual electromagnetic wave is grounded in the circuit of the electromagnetic wave warning display part, To get rid of jaffa.

As described above, the electromagnetic shielding outlet according to the present invention can block the electromagnetic wave generated through the switching operation while the user visually checks whether the electromagnetic wave generated while using household electrical appliances, the user can easily It checks the occurrence and blocking of electromagnetic waves and provides useful effects that can effectively block electromagnetic waves with simple operation.

Claims (6)

A power supply unit including a reference voltage terminal 11 for supplying power supplied through an external power line to an electrical product, an effective voltage terminal 12, and a ground terminal 13 connected to a ground terminal of the electrical appliance ( 10); For stabilizing the circuit from the load residual electromagnetic wave applied through the ground terminal 13 of the power supply unit 10 and the overload generated during the circuit operation from the ground terminal of the electrical appliance operated by receiving power from the power supply unit 10 Circuit security unit 20; A switching switching unit (30) comprising a switching element selectable to connect any one of the reference voltage terminal (11) and the effective voltage terminal (12) and the circuit stabilizer (20); When the switching element of the switching switching unit 30 selects a terminal having a grounding function (0V) among the reference voltage terminal 11 and the effective voltage terminal 12, a signal indicating that the electromagnetic wave is cut off is displayed and the terminal has no grounding function. Electromagnetic shielding outlet characterized in that it comprises a microwave warning display unit 40 to display a signal indicating that the electromagnetic wave is generated when selected. 2. The electromagnetic wave warning display unit 40 according to claim 1, wherein the electromagnetic wave warning display unit 40, the electromagnetic wave warning unit 42 for notifying whether the electromagnetic wave is blocked, the constant voltage setting unit 41 for supplying a constant voltage to the electromagnetic wave warning unit 42, and the electric And an operation signal transmission unit (43) for transmitting an electromagnetic wave warning application signal generated from the load residual electromagnetic wave of the product to the electromagnetic wave warning unit (42) by wire. 2. The electromagnetic wave warning display unit 40 according to claim 1, wherein the electromagnetic wave warning display unit 40, the electromagnetic wave warning unit 42 for notifying whether the electromagnetic wave is blocked, the constant voltage setting unit 41 for supplying a constant voltage to the electromagnetic wave warning unit 42, and the electric Electromagnetic shielding outlet characterized in that it comprises a electromagnetic wave detection unit 43 for transmitting an operation application signal to the electromagnetic wave warning unit 42 by wirelessly detecting the electromagnetic wave generated when using the product. The electromagnetic wave warning display unit (40) of claim 1, wherein the electromagnetic wave warning display unit (40) includes at least one of a light emitting diode that is turned on and off or a buzzer that generates a warning sound as a signal for generating and blocking electromagnetic waves. consent. [2] The electric power cut-off outlet according to claim 1, wherein the circuit stabilizer includes a stable circuit composed of a resistor (R2) and a capacitor (C3) connected in parallel. According to claim 1, If the terminal for the ground function (0V) of the reference voltage terminal 11 and the effective voltage terminal 12 of the power supply unit 10 is not included, The switching switching unit 30 includes a switching stage 31b that is selected so as not to be connected to any terminal of the reference voltage terminal 11 and the effective voltage terminal 12, The grounding terminal 13 of the power supply unit 10 is connected to an external grounding device having a grounding function by connecting the load residual electromagnetic waves generated in the electrical appliance to the grounding to be included in the outlet 50 to be stably grounded. The electromagnetic shielding outlet characterized in that.