KR100773824B1 - Shield for protection against electromagnetic waves - Google Patents

Abstract

     The present invention relates to the blocking politics of electromagnetic waves, and more particularly, the S pole 12 of the magnet 10 having anisotropy in order to protect the human body and the shielding body from the electromagnetic waves 14 generated in various electrical appliances and components. To the electrical appliances and parts that generate electromagnetic waves, the N pole 11 is arranged to the human body and the object to be protected and is a blocking device 30 of the electromagnetic wave using a magnetic force from the N pole to go to the S pole, and also the magnet and The distance from the magnet is arranged close to each other in the range not to be pushed by each other by the magnetic force, and arranged in succession.When the shape of the magnet is arranged in a large area to connect the center of the magnet by a line, To block.

     In addition, the magnet can be replaced by an electromagnet using a direct current.

    In addition, the electromagnetic wave shielding device may be replaced with an anisotropic magnet sheet in which a powder magnetic material or a sintered magnetic material is mixed in a binder, molded into a sheet, and magnetized in the thickness direction of the sheet.

     Electromagnetic wave, magnetic field, magnet, magnetic sheet, mobile phone

Description

     Electromagnetic Wave Breaker {SHIELD FOR PROTECTION AGAINST ELECTROMAGNETIC WAVES}

1A is a schematic diagram of blocking electromagnetic waves by adjoining two magnets.

1B is a schematic diagram of blocking electromagnetic waves with a panel in which magnets are arranged;

2A to 2D are schematic diagrams of anisotropic magnets magnetized up and down.

3 is a sectional view of a panel in which magnets are arranged in a rectangular shape.

4 is a cross-sectional view of a magnet sheet magnetized after arranging the magnet material in a triangle;

5 is a schematic diagram of a magnet sheet extruded and magnetized by mixing a powdered magnetic material with a binder;

6 is a schematic view of a mobile phone and a cross-sectional view of a magnet installed in an enlarged receiver.

Figure 7 is a cross-sectional view of the electromagnetic wave shield is installed on the receiver and the receiver of the landline telephone.

8 is a cross-sectional view of the electromagnetic wave shield installed in the earphone.

9 is a sectional view of a hair dryer provided with an electromagnetic wave shield and a front view of the motor and the electromagnetic wave shield as seen from the tuyeres.

10 is a sectional view of a hybrid electric vehicle equipped with an electromagnetic wave shield;

<Explanation of symbols for main parts of the drawings>

10: rectangular parallelepiped magnet magnetized in the thickness direction

11: N pole of magnet (top) 12: S pole of magnet (bottom)

13: magnetic field line 14: electromagnetic wave

21: cylindrical magnet magnetized in the thickness direction

22: thin hexahedron magnet 23: ring-shaped magnet magnetized in the thickness direction

30: magnetic panel

31: Rectangle formed by connecting the center of the magnet with a line

32: triangle formed by connecting the center of the magnet with a line

33: Filler between magnets 34: Magnet sheet made of sintered magnet material

35: magnet sheet surface 36: binder

37: Irregular polygon powder magnet 38: Magnetic sheet made of powder magnet material

40: mobile phone handset 41: access key

42: Number Key 43: Mobile Phone Call

44: handset case 45: York

46: cell phone case 47: grill

48: diaphragm 51: handpiece 52: song crater

61: perforated anisotropic magnet

70: front view of the motor and the electromagnetic wave shield from the tuyeres

71: hair dryer case 72: heating element

73: fan 74: motor

75: motor shaft 81: battery of the electric vehicle

82: motor and electric device inside the engine room 83: chair

     The present invention provides an apparatus for blocking electromagnetic waves, and more specifically, in order to protect the human body and objects from electromagnetic waves generated in various electrical appliances and components, the S pole direction of the anisotropic magnet generates electrical waves and electrical appliances and components. And the N pole direction of the anisotropic magnet is directed toward the human body and the object to be protected, thereby providing a blocking device for electromagnetic waves that utilizes a magnetic force from the N pole to go to the S pole.

     As civilization develops, electric appliances are used more and more and people are suffering from floods of electric and electronic products that emit a lot of electromagnetic waves such as mobile phones, computers, microwave ovens, earphones, automobiles, hair dryers and electric shavers. I'm in a state.

     Electromagnetic waves, also known as electromagnetic waves, are waves that can be classified into electric and magnetic fields, and vary from low to high frequencies, and in particular, magnetic fields cannot be blocked. When the human body is exposed to electromagnetic waves, it stimulates living tissues by strong electromagnetic fields and blocks the flow of weak body energy of the human body, which weakens the body's immune function, causing diseases such as headache, eye pain, eye bleeding, insomnia and cancer. It is reported to make. In addition, the electromagnetic wave may cause malfunction or failure of the electrical and electronic products. Therefore, in many countries, the intensity of electromagnetic waves is regulated so as not to exceed the human body acceptance criteria.

     In the prior art, metals such as aluminum, copper, and nickel were used, or metal particles were added to various paints, but the electromagnetic wave blocking ability was weak. Korean Patent Laid-Open Publication No. 10-2005-0032843 uses nickel-plated iron powder and soft ferrite, and Japanese Patent Laid-Open No. 5-291786 has a multilayer structure including a sintered ferrite layer as an electron absorber. In this case, the sintered ferrite uses a soft ferrite magnetic material, which is not magnetic in itself, unlike hard ferrite, which is a kind of permanent magnet. In addition, Japanese Patent Application Laid-open No. Hei 5-206676 has a multi-layered structure in which a metal layer and a magnetic layer are installed as an electron absorber, and the magnetic layer is mixed with a binder without sintering the hard ferrite material and manufactured and then magnetized into a sheet. Instead of using the characteristics of the magnet, it is simply used as an electromagnetic wave absorber.

     The present invention has a method of blocking the electromagnetic wave somewhat, but the magnetic field was not able to block, but to provide an electromagnetic wave blocking device that can completely block the electromagnetic wave including the electromagnetic wave and the magnetic field.

     In order to achieve the object of the present invention, the present inventors use the anisotropic magnet magnetized in the direction of the thickness of the electromagnetic wave radiated from the electrical and electronic products in the direction of the gap between the upper and lower surfaces of the magnet to generate the electromagnetic wave By directing them to electrical and electronic products and components, and the N pole of the magnet to the human body and the object to be protected, electromagnetic waves can be blocked. On the contrary, the N pole is directed toward the electromagnetic wave and the S pole toward the human body. Appeared strongly. In particular, blocking the magnetic field is also a feature of the present invention. Hereinafter, permanent magnets of anisotropy are referred to as magnets.

     Magnets used in the present invention are classified into three types, and all magnetize up and down to exhibit magnetic properties of anisotropy. First, the powdered magnetic material is mixed with a binder without sintering to form a sheet and then magnetized to be used as a magnetic sheet. Second, the sintered magnetic material produced by sintering the powdered magnetic material is mixed with a binder to form a sheet and then magnetized. The third one is used as a magnet sheet, and the third one is used by arranging magnetized magnets.

     Hereinafter, the present invention is summarized as follows.

     The present invention uses an anisotropic magnet magnetized by the N pole and the S pole in the thickness direction of the interval between the top and bottom of the magnet to be installed, the S pole of the magnet is directed to the electrical and electronic products and parts that generate electromagnetic waves, the magnet The north pole of the to provide a device for blocking electromagnetic waves by facing toward the body and objects to be protected.

     In addition, in the electromagnetic wave shielding device as described above, the distance between the magnet and the magnet is located close to each other in a range that does not push each other by the magnetic force to provide a shielding device of the electromagnetic wave.

     In addition, in the electromagnetic wave shielding device as described above, when the shape of the magnet is arranged to connect the center of the magnet with a line to be located at the corner of the square or the corner of the triangle by blocking the electromagnetic wave using the magnetic force from the N pole to go to the S pole Provide the device.

     In addition, in the electromagnetic wave shielding device as described above, an electromagnet can be used instead of a magnet, and when the direct current is applied to the iron core, the magnetic flux density is provided as the N pole and the opposite direction as the S pole.

     In addition, in the electromagnetic wave shielding device as described above, using a magnet having a surface magnetic flux density of 50 Gauss or more, a short distance between adjacent magnets is provided to the electromagnetic wave shielding device arranged less than 30 times the height of the magnet.

     In addition, in the electromagnetic wave shielding device as described above, the thickness of 0.1mm or more and 100mm or less, the short side length of the hexahedron magnet or the magnet other than the hexahedron to provide a shielding device of the electromagnetic wave of the short diameter of each 1.0mm or more.

     In addition, the present invention is made of one or two or more binders of rubber, plastic, synthetic resin, non-synthetic resin and cement in the shape of a desired sheet, and installed by inserting a sintered magnetic material inside the sheet, the magnetic field in the thickness direction of the sheet After the magnetization is applied to the N pole and the S pole, the S pole direction of the magnetized sheet is directed to the electrical and electronic products and components generating electromagnetic waves, and the N pole direction of the magnetized sheet is directed toward the human body and the object to be protected. By providing a device for blocking electromagnetic waves using a magnetic force to go out of the N pole to the S pole.

     In addition, in the electromagnetic wave shielding device as described above, the electromagnetic wave shielding device for manufacturing a magnetic sheet by mixing a binder with a powdered magnetic material or a sintered magnetic material and forming a sheet, and magnetizing the N and S poles in the thickness direction of the sheet. to provide.

     In addition, in the electromagnetic wave shielding device as described above, the average particle size of the powder magnetic material and the sintered magnetic material is 0.01mm or more and 100mm or less, the volume of the magnet occupies 10% or more and 95% or less, and the sheet thickness is 0.1mm or more. Provides a device for blocking electromagnetic waves less than 300mm.

     EMBODIMENT OF THE INVENTION Hereinafter, this invention is demonstrated in detail.

      The present invention is directed to the S pole of the magnet to the electrical and electronic products or parts that generate electromagnetic waves, and to the N or the other pole of the magnet to the human body or object to protect the electromagnetic force from the N pole into the S pole When the magnetic force provides a device to block the electromagnetic waves.

     FIG. 1a shows two magnets adjacent to each other with the S pole 12 of the magnet directed to the electronic and electrical appliances and components generating the electromagnetic wave 14, and the opposite pole N 11 to the human body and the object to be protected. By arranging the magnets adjacent to each other until a repulsive force of the same pole occurs, electromagnetic waves are blocked by using a magnetic force that exits the N pole and goes to the S pole.

     FIG. 1B is a cross-sectional view of a panel 30 in which magnets are installed to block electromagnetic waves 14 generated in electrical and electronic products and components, and the S pole 12 direction of the magnets inside the panel is an electrical and electronic product generating electromagnetic waves. And in the direction of the part, and the human body and the shield are positioned in the direction of the N pole 11 of the magnet to block the electromagnetic waves.

     Magnets used in the present invention are permanent magnets, and there are various types, which are mainly classified into AlNiCo-based, ferrite-based, and rare earth-based. Ferrite magnets contain barium (Ba) or strontium (Sr) in addition to iron oxides. The residual magnetic flux density of strontium ferrite (Sr-ferrite) magnets varies depending on the manufacturer, but is up to 4,500 Gauss. Rare earth magnets are superior to samarium magnets, and neodymium magnets (Nd Magnets) have a residual magnetic flux density of 15,000 Gauss and are being improved by technology development.

     The residual magnetic flux density (Br) of the magnet 10 is a magnetic property, and if the value is large, in Fig. 1A, the magnetic force line 13 flowing from the N pole 11 to the S pole 12 may increase, and the magnetic force may increase. have. In addition, the residual magnetic flux density can be lowered according to the raw material mixture, so it can be selected according to the use. If the intrinsic coercive force (iHc) of the magnetic properties is large, the magnetic force can be maintained for a long time, strontium-based ferrite is manufactured to 5,000 Oersted level.

     In addition, the magnet used in the electromagnetic wave shielding device may have the S pole 12 and the N pole 11 positioned downward and upward in one magnet as shown in FIG. 2A to FIG. 2D, and precisely in the thickness direction to the N pole and the S pole. Permanent magnets of magnetized anisotropy are preferred and are not to be positioned to magnetize in the width or length direction when arranged at the installation site. In addition, the thicker the magnet, the greater the magnetic force, the greater the effect of blocking electromagnetic waves, and the greater the distance between the magnets, and only one of these magnets may be used to block some electromagnetic waves. The magnet of the present invention can be coated on the surface to prevent oxidation or discoloration.

     In the case of using a magnet magnetized in advance as described above, the thickness of the magnet is 0.1 mm or more and 100 mm or less, and when the shape of the magnet is a hexahedron, the length of the short side is 1.0 mm or more, and the magnet other than the hexahedron has a short diameter of 1.0 mm or more. It is done. The thicker the thickness, the greater the surface magnetic flux density, so the thickness should be at least 0.1 mm or more. In addition, when the magnet is a hexahedron, a short side length, or a magnet other than the hexahedron is difficult to arrange and fix when the short diameter is smaller than 1.0 mm, and the upper limit is made easy to use. Therefore, when arranging magnetized magnet in the present invention, the thickness of the magnet is 0.1mm or more and 100mm or less, and the length or diameter of the short side is at least 1.0mm or more.

     The magnetic material used in the present invention is made of a powder after melting by adding an element suitable for the type of magnet, and when used as a powder becomes a powder magnetic material, the sintered magnetic material is subjected to heat treatment by containing an additive in the powder magnetic material do. Before sintering, it may be manufactured in the shape or polygon of Fig. 2a to 2d, or may be manufactured in the shape as described above by cutting after sintering. The powder magnetic material and the sintered magnetic material as described above are magnetized by applying a magnetic field to magnetize them.

     Next, in order to achieve the object of the present invention, a magnet arranging method will be described.

     When arranging the magnets in a large area or inside the panel 30, the arrangement shape of the magnets allows the magnets to be positioned at the corners of the rectangle or triangle when connecting the center of the magnets with lines. This is because it is easy to install by arranging regularly at regular intervals. At this time, the arrangement method of the triangle is more preferable because it provides a device that can completely block the electromagnetic wave for a long time because it minimizes the potatoes that lose the characteristics of the magnet.

     In addition, the present invention may use an electromagnet instead of a magnet. The solenoid coil manufactured by winding the coil around the iron core has the characteristics of a magnet, and according to Fleming's right hand law, the N pole of the magnet is formed in the direction of direct current, and the S pole is formed in the opposite direction. Therefore, if the S pole direction of the electromagnet is the direction of the electro-electric appliances that generate electromagnetic waves, and the N pole of the electromagnet is placed in the direction of the human body and the object to be protected, the electromagnetic wave is blocked.

     The panel filler 33 is mixed with one or two or more kinds of non-magnetic materials such as ocher, stone, rubber, cement, wood, rubber, plastic, synthetic resin, non-synthetic resin, cement, stainless steel, general steel sheet, copper plate, and aluminum. It can be used, and it is desirable to avoid the material that significantly reduces the magnetic force of the magnet by demagnetizing the magnet.

     In the magnet array method of the present invention, the shortest distance between the magnetized magnet and the magnet is 30 times or less the magnet thickness. The distance between the magnet and the magnet depends on the type of the magnet, and the surface magnetic flux density increases, so that the distance can be farther away, and when the neodymium magnet is over 30 times, the harmful energy blocking effect is reduced. Therefore, the shortest distance between the magnet and the magnet (the spacing B of FIG. 3, the spacing C of FIG. 4) is 30 times or less of the thickness of the magnet. At this time, the filler 33 between the magnet and the magnet may use most materials that do not reduce the characteristics of the magnet.

     In the magnet array method of the present invention, the surface magnetic flux density of the closest magnet is at least 50 Gauss or more, and if it is less than 50 Gauss, the harmful energy blocking effect is inferior. Therefore, the surface magnetic flux density should be at least 50 Gauss or more.

     In addition, the difference between the height of the magnet and the magnet in the arrangement of the magnet does not affect the effect of the invention, but if possible, it is easy to arrange the magnets and the distribution of the magnetic flux density is easy to balance the center of the magnets. Therefore, it is more preferable.

     Hereinafter, a method of using a magnetic material to achieve the object of the present invention.

     Magnetic materials are divided into powder magnetic materials and sintered magnetic materials, and the magnetic materials are mixed with the binder 36, molded by extrusion, etc. and magnetized to the north pole and the south pole in the thickness direction, which is the distance between the top and bottom surfaces of the magnet. A sheet can be produced. The binder 36 of the magnetic sheet may be made of a material capable of fixing the magnet with one kind or two or more kinds of rubber, plastic, synthetic resin, non-synthetic resin, and cement.

     In the present invention, the average particle size of the magnet material including the magnet or sintered magnet material 22 and the powder magnet material 37 is 0.01 mm or more and 30 mm or less. If the average particle size of the magnetic material is 0.01mm or less, the magnetic force is weak, and if the average particle size is 30mm or more, the particle size is too large to make the sheet, which may shorten the sheet life. Therefore, the average particle size of magnetic material should be 0.01mm or more and 30mm or less.

     In addition, the volume of the magnetic material is 10% or more and 95% or less with respect to the volume including the binder 36 and the magnetic materials 22 and 37. If the volume of the magnetic materials 22 and 37 is less than 10%, it is difficult to block harmful energy due to the small size of the magnetic force. Also, if the volume of the magnetic material exceeds 95%, the connecting force of the binder connecting the magnets This is because it is weak and the life of the sheet is shortened. Therefore, in the present invention, the volume of the magnet materials 22 and 37 is 10% or more and 95% or less of the combined volume of the binder 36 and the magnet material.

     In the present invention, the thickness of the magnet sheet is 0.1 mm or more and 300 mm or less. If the magnetic sheet is thinner than 0.1mm, it is impossible to block harmful energy, and if it is thicker than 300mm, it is difficult to magnetize. Therefore, the thickness of the magnet sheet is 0.1mm or more and 300mm or less.

     In addition, due to the characteristics of the material as described above, the powdered magnetic material and the sintered magnetic material may be mixed together to produce a sheet and magnetized.

     As described above, the magnet and the magnetic material used in the present invention are not limited to the type of the material, but rather, the physical properties of the magnet having magnetic properties of anisotropy up and down are important.

     Hereinafter, the present invention will be described in detail with reference to the accompanying drawings, which are presented to aid the understanding of the present invention, but the present invention is not limited thereto.

     3 is a cross-sectional view of a panel used as a wall surface in a living room, a factory, a sound room, and the like, and the magnets 10 are spaced by the filler 33 of the panel. In arranging the magnets, the center of the magnet 10 is positioned at the corner of the rectangle 31. In the drawing, the spacing between the magnets differs according to the edges of the magnets, and is mainly due to the difference in surface magnetic flux density. In the case of the rectangular magnet of FIG. 3, the spacing A is always larger than the spacing B. FIG.

     As a detailed embodiment of Figure 3, when the residual magnetic flux density of the anisotropic magnet magnetized in the thickness direction from the top surface to the bottom surface of 10 mm thick, 10 mm wide and 150 mm long, the rectangular magnetic flux density is 4,000 Gauss and the intrinsic coercive force is 4,000 Oersted In the figure, the shortest distance with adjacent magnets is 28mm in the distance (B), and the long distance (A) is 70mm to block the electromagnetic waves. The shorter the distance between the magnet and the magnet, the greater the blocking effect of electromagnetic waves.

     Figure 4 is a panel that can be used as a wall surface, a triangle (32), or a corner of a rhombus in the arrangement by inserting a low-height rectangular magnetic material produced by sintering the inside of the sheet produced in the shape of the desired sheet as a binder The magnet is placed in the shape. After fixing and magnetizing the binder, the S-pole direction of the sheet is positioned in the direction of the electronic and electrical appliances, and the N-pole of the sheet is positioned in the direction of the human body to represent an apparatus for blocking electromagnetic waves. The magnetic material in the sheet was strontium-based ferrite, the size of which was 100mm in length and width, the height was 3mm, the distance (C) of the magnet was 20mm, and the magnetic field was 15,000 Oersted when magnetized. The electromagnetic wave is blocked.

     In addition, the arrangement of FIG. 4 could block electromagnetic waves even when the magnet was replaced with an electromagnet. In electromagnet wound copper wire on general low carbon steel plate, direct current is applied so that magnetic flux density of N pole is 8,000 Gauss, and it is directed toward human body, S pole is directed to electronic and electrical appliances, and the distance between adjacent electromagnets is 100mm. Was blocked.

     5 is a magnet sheet of ferrite magnet material mixed with iron oxide and strontium carbonate, and mixed with a binder and fixed with a binder of irregularly shaped magnetic material particles prepared by adding an additive material, and magnetized in the thickness direction of the bottom surface from the top surface of the sheet. It is a schematic diagram. Figure 5 uses a powdered magnetic material that is not sintered, the magnetic material particles at this time can be made small, the thickness of the sheet can be made thin, it can be easily used mainly in precision electronic products such as mobile phones.

     As an example, the average particle size of the powdered magnetic material is 2.5 mm, the volume of the powdered magnetic material is 70%, the binder 36 is mixed with rubber, and a sheet having a width of 20 cm, a height of 100 cm, and a height of 3 mm is heated. Prepared by compression. The produced sheet was magnetized by applying a magnetic field of 16,000 Oersted in the thickness direction in the up and down direction to make it magnetized, and the N pole direction of the magnet sheet was installed in the direction of the human body, and the S pole direction was installed in the direction of electric and electronic products. Blocked.

     6 is an enlarged cross-sectional view of the schematic diagram and the receiver 40 of the mobile phone, the magnet 21 of the mobile phone receiver 40 and the yoke 45 to which the magnet is fixed form a magnetic field, When the diaphragm 48 vibrates, the voice is changed. The earpiece case 44 forms an electromagnetic field to generate strong electromagnetic waves so that the magnet 23 of the invention is located on the outer surface of the earpiece case 44, and the upper surface which contacts the ear of the human body is the N pole 11, the earpiece case. It was confirmed that the direction of the S pole 12 was a magnet to block the electromagnetic waves, and the ear did not hurt even when used for a long time. In this case, the magnetic field is especially strong, and magnetic flux density of 4,000 Gauss is used, and 1,000 Gauss is possible.

     In addition, behind the selection key 41 and the license plate 42 of the mobile phone, there are various electronic circuits and components, and the magnet sheet 38 of the embodiment of FIG. 5 is attached. At this time, the N pole of the magnet sheet was placed in the direction of the surface of the mobile phone, and the S pole was placed in the direction of the component to block electromagnetic waves.

     7 is a cross-sectional view of the electromagnetic wave blocking device installed in the handset of the landline telephone. Since the handpiece 52 and the handpiece 51 of the handset have a permanent magnet and an electric coil to form an electromagnetic field, strong electromagnetic waves are generated. At this time, the N pole 11 of the anisotropic magnet 23 is positioned to come in the direction of the ear.

     8 is a cross-sectional view of the electromagnetic wave blocking device is installed in the earphone, the magnet 23 and the diaphragm 48 in the electromagnetic circuit designed to convert the electronic signal into the sound can be heard by the ear, in the present invention, Since the N pole 11 of the anisotropic magnet 61 with holes was placed in the ear hole direction, ear comfort was confirmed even when used for a long time. Earphones emit a strong magnetic field, but there has been no way to block the magnetic field, but by using a magnet with a magnetic flux density of 2,000 Gauss, the magnetic field shock to the brain can be completely blocked.

     Fig. 9 is a sectional view of the hair dryer provided with the electromagnetic wave shield, and shows an enlarged front view of the motor and the electromagnetic wave shield as seen from the tuyeres. The S pole 12 of the anisotropic magnet 10 was placed in the electromagnetic wave direction generated by the motor 74, and the N pole 11 was placed in the human head direction to block the electromagnetic waves. When the surface magnetic flux density of the magnet 10 was 900 Gauss, the distance between the magnet and the magnet was 40 mm.

     FIG. 10 is a cross-sectional view of a hybrid electric vehicle in which electromagnetic wave shielding devices are installed. In order to block electromagnetic waves generated from a battery 81 and a motor and an electric device in the engine room 82 located on the floor of the vehicle, the panel 30 is provided. Is installed, the ceiling is provided with a magnetic sheet 34 to block the electromagnetic waves emitted from the ultra-high voltage wires, such as during road driving. The magnet seat 34 and the N pole 11 of the panel 30 are provided so as to be located in the interior direction of the vehicle. The installation of the magnet sheet 34 and the panel 30 may be applied to a general house, a bus, an airplane, and a spaceship. The magnet panel shown in FIG. 10 is an adjacent magnet when a residual magnetic flux density of 4,200 Gauss and an intrinsic magnetic force of 4,100 Oersted is obtained by magnetizing a strontium ferrite magnet having a thickness of 10 mm, a width of 9 mm, and a length of 150 mm in the thickness direction from top to bottom. The shortest interval between and was 28mm, blocking the electromagnetic waves.

    According to the present invention, in the case of a notebook computer, electromagnetic waves can be blocked by attaching a magnet to a portion to be shielded at a portion where a hard driver, a motor, a CD driver, a mouse, and various electronic components are attached.

     The present invention is not limited to this particular use, but can be used to block electromagnetic waves of various electrical and electronic products and components according to the principles of the present invention.

     As described above, the electromagnetic wave blocking device according to the present invention is a device for blocking the electromagnetic wave and the magnetic field, using an anisotropic magnet magnetized by the N pole and the S pole in the thickness direction of the upper surface and the lower surface, the magnet S Direct the poles to the electrical and electronic products and parts that generate electromagnetic waves, arrange the N poles in the direction of the human body or the protective object, and block the electromagnetic waves by adjoining several magnets in a large area. It is possible to replace, and also the powder is mixed with the sintered magnet material into the binder to form a sheet, and magnetized by N pole and S pole in the thickness direction from the top surface to the bottom surface to make a magnet sheet, and then to the S pole direction of the magnet sheet. Is directed to electrical and electronic products and components that generate electromagnetic waves, and the N-pole direction is directed to the body or object to be protected. By providing a blocking device for blocking an electromagnetic wave.

     By implementing as described above, the present invention is a low-frequency at high frequency in the electronic devices such as mobile phones, landline phones, earphones, hair dryers, computers, vacuum cleaners and large electric devices such as automobiles, airplanes, induction furnaces, trains, etc. And it can block various kinds of electromagnetic wave from short wave to long wave.

     What has been described above is only an embodiment for implementing the electromagnetic wave according to the present invention, and is not limited to the above-described embodiment of the present invention, as claimed in the following claims without departing from the gist of the present invention. Anyone with ordinary knowledge in this field will have the technical idea of the present invention to the extent that various changes are possible.

Claims (10)

     By using one or two or more anisotropic magnets magnetized by the N pole and the S pole in the thickness direction, which is the distance between the top and bottom surfaces of the magnet to be installed, the S pole of the magnet is directed to the electrical appliances and components that generate electromagnetic waves. The N pole of the electromagnetic wave shielding device that uses the magnetic force to go to the S pole by exiting the N pole toward the human body and objects to be protected.      When one or more anisotropic magnets magnetized to N and S poles in the direction of thickness, which is the distance between the top and bottom surfaces of the magnet to be installed, the electromagnetic poles generate electromagnetic waves in a large area. To the electrical appliances and parts, and the N pole of the magnet is installed toward the human body and the object to be protected, and the distance between the magnet and the magnet is arranged close to each other in a range not to be pushed out by the magnetic force, so that they are arranged continuously and come out of the N pole. Blocking device for electromagnetic waves using magnetic force to go to the pole.      The electromagnetic wave shielding device according to claim 2, wherein the magnets are positioned at the corners of a square or a triangle when the shapes of the magnets arrange the centers of the magnets in a line.      The electromagnetic wave shielding device according to claim 1 or 3, wherein the magnets having a surface magnetic flux density of 50 Gauss or more are arranged such that a short distance between the magnets and the magnets is not more than 30 times the height of the magnets.      The hexahedral magnets 10 and 22 according to claim 1 or 3, wherein in the case of using anisotropic magnets magnetized in a thickness direction of 0.01 mm or more and 100 mm or less and spaced between the upper and lower surfaces of the magnet to be installed, An electromagnetic wave shielding device having a short side of 1.0 mm or more in length or a magnet other than a hexahedron having a short diameter of 1.0 mm or more.      In manufacturing the magnetic sheet by inserting the sintered magnet material into the binder, the binder is manufactured in the shape of the desired sheet, the sintered magnetic material is inserted and installed in the sheet, the binder is dried to fix the sheet, and the thickness of the sheet After magnetizing to the north pole and south pole by applying a magnetic field in the direction, the south pole direction of the magnetized sheet is directed to the electrical and electronic products and components that generate electromagnetic waves, and the north pole direction of the magnetized sheet is to protect the human body and objects Blocking device for electromagnetic waves using magnetic force to get out of N pole to S pole by arranging toward.      In manufacturing a magnetic sheet by mixing a sintered magnetic material or powdered magnetic material with a binder, the sheet is formed by mixing the powdered magnetic material or the sintered magnetic material with a binder, and a magnetic field is applied in the thickness direction of the sheet to the N pole and the S pole. After magnetizing, the S-pole direction of the magnetized magnet sheet is arranged toward the electrical and electronic products and components that generate electromagnetic waves, and the N-pole direction of the magnetized sheet is installed toward the human body and the object to be protected and then exits from the N pole. Blocking device for electromagnetic waves using magnetic force to go to the pole.      The electromagnetic wave shielding device according to claim 6 or 7, wherein the binder material comprises one or two or more of rubber, plastic, synthetic resin, non-synthetic resin, gypsum, and cement.      The electromagnetic wave according to claim 6 or 7, wherein the average particle size of the magnetic material is 0.01 mm or more and 30 mm or less, the volume of the magnet is 10% or more and 95% or less of the inner material of the sheet, and the sheet thickness is 0.1 mm or more and 300 mm or less. Blocking device.      The magnet of claim 1 or 3, wherein the magnet is replaced with an electromagnet using a direct current, and the N pole, which is the direction in which the magnetic flux density is emitted from the electromagnet, is positioned in the direction of the human body and the object to be protected, and the S pole, which is the opposite direction, is A device for blocking electromagnetic waves, which uses magnetic force to exit the N pole and go to the S pole by installing them facing the direction of the electrical and electronic products where electromagnetic waves are generated.

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