KR101641080B1 - Electric mat equipped with shielding function and heating interval setting function - Google Patents

Abstract

The present invention relates to a lighting apparatus of LED surface light emission, and more specifically, to a lighting apparatus of LED surface light emission, which is equipped therein with a power supply system to simplify a wiring connection to an LED module, and is capable of easily performing assembly. The present invention includes: a frame including a horizontal part on which a diffusion plate, a light guide plate, and a reflection plate are sequentially stacked and a vertical part upwardly bending and extending from an outer end portion of the horizontal part, formed in a shape of a rectangular frame, and detachably coupled thereto with a cover for covering an upper portion of the reflection plate; a pair of LED modules including a plurality of LEDs, an LED bar mounted at printed circuit board having a bar shape on which a plurality of the LEDs are arrayed at regular intervals, and a connector prepared at one end portion of the LED bar, in which the LED bars are arranged in the lengthwise direction of both sides of the frame to face each other inside the frame; and a power supply system accommodated in the frame and electrically connected to the connector to supply power to the LED module. An accommodation groove for accommodating the power supply system is formed at an upper side or a lower side of the frame, and a guide part having a channel or hook shape for wiring between the power supply system and the connector is formed at both sides of the accommodation groove in lengthwise direction of the frame.

Description

ELECTRIC MAT EQUIPPED WITH SHIELDING FUNCTION AND HEATING INTERVAL SETTING FUNCTION < RTI ID = 0.0 >

The present invention relates to an electric mat having a shielding function and a heat generating interval setting function, and more particularly, to an electric mat which shields an electric field and a magnetic field generated from a heat generating unit and a main body unit, and divides the frequency according to a heat generating interval set for each temperature step To an electric mat which can prevent overheating due to continuous heat generation.

Regarding the electromagnetic wave shielding device, a number of such devices are registered and disclosed in addition to the Korean Public Utility Application No. 20-2011-0002145 (hereinafter referred to as "prior art document"). The above-mentioned prior art uses a method of shielding electromagnetic waves through a cover or cover of a bag shape.

Generally, when a current flows in a heating line, an electric flux line intersecting the magnetic flux generated around the heating line is generated. That is, when electric current flows through the conductor, electromagnetic waves are generated by electric and magnetic waves flowing in the electric current.

This electromagnetic wave is a phenomenon in which the vibration of energy is transmitted at a constant speed at a point within an electromagnetic field of an electric property and a magnetic property, and is measured in mG (milligauss), which is a measurement unit of an electric field (EMF) Such electromagnetic waves may also be referred to as EMW or EMF.

It is well known that electromagnetic waves are very dangerous to human health.

In particular, it has been known by academia that residents in areas where high-voltage wires are exposed are always exposed to electromagnetic waves and are more likely to have cancer and leukemia than residents of other regions.

In addition, electric appliances used in contact with the body of a human body such as a heating mat, an electric blanket, an electric bed, an electric bed, an electric cushion, and an electric fomentation are very high. Especially, To 100 mG or more, which is very damaging to the human body.

Conventionally, the heating line covers the outer periphery of the copper wire with non-combustible twisted yarn, and the outer peripheral surface of the twisted yarn covers the inner covering made of polytetrafluoroethylene (Teflon), and a nichrome wire or an alloy wire The outer periphery of the nichrome wire is covered with an outer covering made of silicone rubber, and the currents flowing in the interlocking twisted wire and the nichrome wire flow in opposite directions to each other.

However, such a conventional heating line can suppress the generation of an electric field due to the mutual offset of the electric field generated in the peristaltic line and the nichrome line by flowing the current flowing in the peristaltic line and the nichrome line in the opposite direction, Induction is still maintained.

Korean Unexamined Utility Model Publication No. 20-2011-0002145.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to provide a microwave oven capable of shielding an electric field and a magnetic field generated from a heating unit and a body unit, And an object of the present invention is to provide an electric mat which can prevent overheating due to continuous heat generation.

According to an aspect of the present invention, there is provided an electric mat having a function of setting a shielding function and a heating interval, the electric mat including a PVC heating line for generating heat by a supplied power source, a first insulator insulated from the PVC heating line, The present invention relates to a method of manufacturing a PVC insulation board, comprising the steps of: (1) a coil wound around an insulator to be grounded; a coating layer covered and grounded by the PVC heating wire wound with the coil; a second insulator insulated from the coating layer; A heating unit including a carbon nonwoven fabric covering the PVC heating element on which the carbon fibers are disposed; A main body for switching the display in accordance with a heating interval set for each temperature step and displaying the size of the electromagnetic wave in an audiovisual manner; .

Further, the coil is made of a copper material.

The coating layer is made of aluminum.

And the coil and the cover layer are connected to a ground wire to bypass the electric field.

Further, the carbon fiber is bonded to the rolling terminal and then pressed, and is grounded to the ground terminal of the power source so as to shield the magnetic field.

In addition, the main body may include a heating interval adjusting unit for setting a heating interval according to each temperature step, and dividing and supplying the switching frequency according to a set heating interval; An electromagnetic wave measuring unit for detecting a current due to a magnetic field induced in the heating unit and visually displaying the magnitude of the electromagnetic wave; And a control unit.

The heating interval adjusting unit may include a control module for setting a heating interval time for each temperature step, inputting a high frequency for switching to the switching module, and dividing the switching frequency according to a predetermined heating interval time interval according to a set temperature step; And a switching module for performing switching based on the switching frequency divided according to the heating interval time for each temperature step according to the control of the control module. And a control unit.

Further, the control module repeats the heat generation and the stopping, and sets the interval to be reheated shorter as the temperature is higher.

The heating interval adjusting unit may include: a filter for filtering a glitch signal by switching; And a control unit.

The electromagnetic wave measuring unit may further include an induction sensor located at a front end of the heat generating unit and detecting a current due to a magnetic field induced in the heat generating unit; A current amplifier for amplifying a current detected by the induction sensor; A signal converter for sampling the current signal amplified through the current amplifier and converting the sampled current signal into a digital signal; An audiovisual output level for the magnitude of the electromagnetic wave corresponding to each current signal is classified so that the digital signal is converted into a current signal through the signal converter so as to convert the current signal into an electric signal corresponding to a preset audiovisual output level And controls the magnitude of the set electromagnetic wave to be displayed through a display unit; And an indicator for audibly outputting the magnitude of the electromagnetic wave under the control of the controller; And a control unit.

Also, the display unit may include a display module for visually displaying the magnitude of electromagnetic waves using at least one of a 7-segment through a Lath circuit, an LED serial stream, and an LCD; And an acoustic output module for outputting sounds in different bands from a low frequency band to a high frequency band according to the size of an electromagnetic wave; And a control unit.

In the main body, carbon fibers are disposed above and below the internal PCB substrate and grounded to a ground terminal of the PCB substrate, thereby shielding electromagnetic waves.

According to the present invention as described above, electromagnetic radiation can be completely shielded by canceling the magnetic field by shielding the carbon fiber and the carbon nonwoven fabric by canceling the electric field by constituting the heating wire with a multiple coating structure, There is an effect.

Further, according to the present invention, electromagnetic wave can be completely shielded by shielding the body portion using carbon fiber.

In addition, according to the present invention, an electromagnetic wave generated from a heating wire is measured through an induction sensor to indicate that electromagnetic waves are not generated, thereby making it possible to use the electric mat safely.

According to the present invention, the heating interval is set for each temperature step, and the switching frequency is divided and supplied in accordance with the set heating interval, thereby preventing the conventional problems such as the fire caused by the failure of the temperature sensor or the departure from the heating line There is also an effect.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a general view of an electric mat having a shielding function and a heating interval setting function according to the present invention. Fig.
2 is a detailed configuration diagram of a heating unit according to the present invention;
The present invention relates to a carbon fiber nonwoven fabric and a carbon fiber nonwoven fabric.
4 is a view showing an example in which carbon fibers are arranged up and down on a PVC heating wire according to the present invention.
5 is a view showing an example of a rolling terminal to which a carbon fiber according to the present invention is bound.
6 is a detailed configuration diagram of a heating gap adjusting unit of the main body according to the present invention.
7 is a detailed configuration diagram of an electromagnetic wave measuring unit of the main body according to the present invention.
FIG. 8 and FIG. 9 show an example in which an induction sensor is arranged in a heat generating unit according to the present invention. FIG.
10 is an exemplary view showing a display module of an electromagnetic wave measuring unit according to the present invention.
11 is a view showing an example of carbon fibers adhered to the interior of the body according to the present invention.
12 is a graph showing changes in temperature of a carbon nonwoven fabric and a general nonwoven fabric according to the present invention.
Fig. 13 is an example showing a state in which electromagnetic waves generated from a general electric mat are measured. Fig.
FIG. 14 is an exemplary view showing a state in which electromagnetic waves generated from an electric mat having a shielding function and a heat generating interval setting function according to the present invention are measured. FIG.

Specific features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. It is to be noted that the detailed description of known functions and constructions related to the present invention is omitted when it is determined that the gist of the present invention may be unnecessarily blurred.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will now be described in detail with reference to the accompanying drawings.

An electric mat having a shielding function and a heat generating interval setting function according to the present invention will be described with reference to FIGS. 1 to 14. FIG.

FIG. 1 is an overall view of an electric mat having a shielding function and a heat generating interval setting function according to the present invention, and includes a heating unit 100 and a main body 200 as shown in FIG. At this time, other general configurations of the electric mat, such as a configuration for adjusting the temperature step by the user's input control, will be omitted.

2 to 3, the heating unit 100 includes a PVC heating line 110, a first insulator 120, a coil 130, an aluminum coating layer 140 and a second insulator 150, (160) and carbon nonwoven fabric (170).

Specifically, a first insulator 120 is insulated and covered with a PVC heating line 110 that generates heat by a supplied power source. A coil 130 made of copper (Cu) is wound around the first insulator 120, do. Thus, the electric field induced by the PVC heating line 110 is bypassed.

Further, the aluminum coating layer 140 is covered with the PVC heating line 110 wound with the coil 130, and is grounded. Thereby, the electric field is again bypassed.

Subsequently, the second insulator 150 is insulated and covered with the aluminum coating layer 140, thereby completely shielding the electric field. That is, the electric field can be completely shielded by connecting the coil 130 and the aluminum coating layer 140 to the ground.

3 and 4, the second insulator 150 is disposed above and below the insulation-coated PVC heating line 110, A carbon fiber 160 is disposed, and a carbon nonwoven fabric 170 is disposed on the carbon fiber 160. The magnetic field is shielded by the inherent resistance of the carbon fiber 160.

At this time, the carbon fiber 160 is not connected by lead.

Accordingly, the carbon fibers 160 are bonded to the rolling terminal as shown in Fig. 5 and then squeezed, so that the magnetic field is completely shielded by being grounded to the ground terminal of the power source (the middle ground terminal is generally provided on the mat) . At this time, the carbon fibers 160 can be bundled by bundling them into a loop of a rolling terminal.

1, the heating unit 210 and the electromagnetic wave measuring unit 220 are connected to the main body unit 200. The main body unit 200 switches according to the heating interval set for each temperature step, .

Specifically, the heating interval adjusting unit 210 sets a heating interval according to each temperature step and performs a function of dividing and supplying the switching in accordance with the set heating interval. As shown in FIG. 6, 211, a switching module 212, and a filter 213.

More specifically, the control module 211 sets the heating interval time for each temperature step, inputs the high frequency (20 KHz) for switching to the switching module 212, and divides the switching frequency according to the set heating interval time interval Supply.

The switching module 212 performs switching based on the switching frequency divided according to the heating interval time for each temperature step according to the control of the control module 211. [

At this time, the control module 211 may repeatedly generate and stop the heating, and the interval between the heat generation and the heating is shortened as the temperature is higher, so that the temperature can be kept constant. Fire can be prevented. That is, it is possible to prevent the conventional problems such as a fire caused by a failure of the temperature sensor or a departure from the heating line.

For example, if the temperature is the lowest, it will heat up for 1 minute, stop for 1 minute, set to heat for 1 minute (heat interval 1 minute), heat up for 9 seconds at the highest temperature, Set it again for 10 seconds (heat interval 10 seconds). The conventional temperature control method is a method of controlling the temperature by the sensor, which causes a fire when the sensor malfunctions. However, in the present invention, by performing the temperature adjustment through the setting of the heat generation interval, it is possible to prevent the fire due to the malfunction of the sensor.

The filter 213 filters the glitch signal by switching.

7, the electromagnetic wave measuring unit 220 detects a current due to a magnetic field induced in the heat generating unit 100 and displays the magnitude of the electromagnetic wave in an audiovisual manner. The electromagnetic wave measuring unit 220 includes an inductive sensor 221, A current amplifier 222, a signal converter 223, a controller 224, and an indicator 225.

8 to 9, the induction sensor 221 is positioned at the tip of the heat generating unit 100 and detects a current due to the magnetic field induced in the heat generating unit 100. As shown in FIG.

The current amplifier 222 amplifies the current detected by the induction sensor 221.

The signal converter 223 samples the current signal amplified through the current amplifier 222 and converts the sampled current signal into an 8-bit to 12-bit digital signal.

The controller 224 classifies the audiovisual output level of the electromagnetic wave size corresponding to each current signal and counts the current signal converted into the digital signal through the signal converter 223 and outputs the counted current signal to the predetermined audiovisual The magnitude of the electromagnetic wave corresponding to the output level is set, and the magnitude of the set electromagnetic wave is displayed through the display unit 225. [

At this time, the controller 224 may include a configuration for performing a clock frequency input and a reference voltage setting so as to operate logic control, and may be configured to use a wireless communication such as Bluetooth, To the portable terminal 10 of the predetermined user.

The display device 225 audibly outputs the magnitude of the electromagnetic wave using the display module 225a and the sound output module 225b under the control of the controller 224. [

Specifically, the display module 225a visually displays the electromagnetic wave size using characters or images using a 7-segment (see FIG. 10) through a Lath circuit, an LED serial stream, and an LCD, 225b output sounds in different bands from a low frequency band to a high frequency band according to the magnitude of electromagnetic waves. At this time, the display module 225a can visually display the electromagnetic wave size on the LCD through the LCD phase driver.

Here, the current amplifier 222 may directly output sound by varying the band through the sound output module 225b based on the amplified current signal.

That is, the current amplifier 222 separately classifies the audible output level with respect to the magnitude of the electromagnetic wave corresponding to the amplified current signal, and outputs the amplified current signal through the current amplifier 222 as shown in FIG. 7 It is possible to set the magnitude of the electromagnetic wave corresponding to the audible output level and output the magnitude of the set electromagnetic wave through the acoustic output module 225b.

In order to shield the electric field and the magnetic field generated from the main body 200, the main body 200 has the carbon fiber 230 (see FIG. 11) disposed above and below the internal PCB substrate and grounded to the PCB substrate ground terminal, . That is, by connecting the inherent conductance of the carbon fiber 230 and the electric field and the magnetic field of the electromagnetic wave to the ground terminal, the electromagnetic wave can be completely shielded.

FIG. 12 is a graph showing the temperature change of the carbon nonwoven fabric and the general nonwoven fabric. As shown in FIG. 12, the thermal nonconductivity of the carbon nonwoven fabric is higher than that of the general nonwoven fabric.

FIG. 13 is a view showing an example of measurement of electromagnetic waves generated from a general electric mat, FIG. 14 is a view illustrating a measurement of electromagnetic waves generated from an electric mat having a shielding function and a heating interval setting function according to the present invention As shown in FIG. 13, an electromagnetic wave of 10.3 mG is measured as shown in FIG. 13. However, as shown in FIG. 14, in the electric mat having the shielding function and the heating interval setting function according to the present invention, Is shielded.

While the present invention has been particularly shown and described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It will be appreciated by those skilled in the art that numerous changes and modifications may be made without departing from the invention. Accordingly, all such appropriate modifications and changes, and equivalents thereof, should be regarded as within the scope of the present invention.

100: heat generating part 200:
110: PVC heating wire 120: first insulator
130: coil 140: aluminum coating layer
150: second insulator 160: carbon fiber
170: Carbon nonwoven fabric 210: Heating interval adjusting unit
220: electromagnetic wave measuring unit 211: control module
212: switching module 213: filter
221: Induction sensor 222: Amplifier
223: Signal converter 224: Controller
225: Indicator 225a: Display module
225b: sound output module 10: portable terminal

Claims (12)

A PVC insulated wire which generates heat by a supplied power source, a first insulator which is insulatedly coated on the PVC heating wire, a coil which is wound on the first insulator and is grounded, a coating layer which is covered and grounded on the PVC heating wire wound with the coil, , A carbon fiber disposed above and below the second insulator including the PVC heating line, and a carbon fiber non-woven fabric covering the carbon fiber disposed above and below the second insulator part; And
A main body switching according to a heating interval set for each temperature step and displaying the size of the electromagnetic wave audibly and visually; And a heating interval setting function.
The method according to claim 1,
Wherein:
Wherein the electric mattress has a shielding function and a heating interval setting function.
The method according to claim 1,
The coating layer
The electric mattress has a shielding function and a heating interval setting function, which are aluminum materials.
The method according to claim 1,
And an electric field is bypassed by connecting the coil and the covering layer to a ground line.
The method according to claim 1,
The carbon fibers may be,
And the electric mats are shielded by being tied to the rolling terminals and then grounded to the ground terminal of the power source so as to shield the magnetic field.
The method according to claim 1,
Wherein,
A heating interval adjusting unit which sets a heating interval according to each temperature step and supplies the divided frequency in accordance with a set heating interval; And
An electromagnetic wave measuring unit for detecting a current due to the magnetic field induced in the heating unit and displaying the magnitude of the electromagnetic wave audibly and visually; And an electric mattress having a shielding function and a heating interval setting function.
The method according to claim 6,
Wherein the heating interval adjusting unit comprises:
A control module for setting a heating interval time for each temperature step, inputting a high frequency for switching to the switching module, and dividing the switching frequency in accordance with a preset heating interval time interval according to a set temperature step; And
A switching module for performing switching based on the switching frequency divided according to the heating interval time for each temperature step according to the control of the control module; And an electric mattress having a shielding function and a heating interval setting function.
8. The method of claim 7,
The control module includes:
The interval between the first temperature and the second temperature is set shorter than the interval between the second temperature and the temperature is lower than the second temperature. Electric mat with heating interval setting function.
8. The method of claim 7,
Wherein the heating interval adjusting unit comprises:
A filter for filtering a glitch signal by switching; And an electric mattress having a shielding function and a heating interval setting function.
The method according to claim 6,
The electromagnetic-
An induction sensor positioned at a tip of the heat generating unit and detecting a current due to a magnetic field induced in the heat generating unit;
A current amplifier for amplifying a current detected by the induction sensor;
A signal converter for sampling the current signal amplified through the current amplifier and converting the sampled current signal into a digital signal;
An audiovisual output level for the magnitude of the electromagnetic wave corresponding to each current signal is classified so that the digital signal is converted into a current signal through the signal converter so as to convert the current signal into an electric signal corresponding to a preset audiovisual output level And controls the magnitude of the set electromagnetic wave to be displayed through a display unit; And
An indicator for audibly outputting the magnitude of the electromagnetic wave under the control of the controller; And an electric mattress having a shielding function and a heating interval setting function.
11. The method of claim 10,
The display device
A display module for visually displaying an electromagnetic wave size using at least one of a 7-segment through a Lath circuit, an LED serial stream, and an LCD; And
An acoustic output module for outputting sounds in different frequency bands according to the electromagnetic wave size; And an electric mattress having a shielding function and a heating interval setting function.
The method according to claim 1,
Wherein,
Wherein the carbon fiber is disposed above and below the inner PCB, and grounded to a ground terminal of the PCB to shield the electromagnetic wave.

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