JP2007027065A - Ion generating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an ion generating device capable of preventing release outside of noise generated from lead pins connecting an ion generating element and a circuit board or a connecting part of lead wires or the like to attenuate influence of the noise given to other electric equipment. <P>SOLUTION: An electromagnetic shielding member 20 is provided surrounding the lead pins 4, 4 connecting the circuit board 2 equipped with a transformer 3 and the ion generating element 1. Noise released from the lead pins 4, 4 for supplying an output voltage from the transformer 3 to the ion generating element 1 is absorbed by the electromagnetic shielding member 20 to prevent the noise from being released outside the ion generating device. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an ion generator that generates ions in the air using a discharge phenomenon caused by a high voltage, and further relates to an ion generator that can reduce emission of noise caused by operation.

  An ion generator that purifies air by generating positive ions and negative ions, sending air containing ions, and removing suspended particles such as microparticles and bacteria floating in the air where the ions were sent. It has become. The ion generating element provided in the ion generating device has two electrodes facing each other through a dielectric, and a voltage from a voltage generating circuit that generates a voltage of several kV is applied between the two electrodes. In this configuration, plasma discharge is generated in the meantime, and ions are generated in the air.

  The voltage generation circuit of the ion generator is configured using a transformer. There has been a problem that electromagnetic waves are emitted as noise from the ion generator due to the operation of the transformer when generating ions.

In Patent Document 1, a transformer is mounted on a circuit board provided to face the ion generation unit, and the transformer is covered with a metal cap to make it difficult for noise to be emitted from the transformer. An ion generator has been proposed in which a metal member is attached outside a case for accommodating a circuit board and a transformer so as to cover the transformer, thereby making it difficult for noise emitted from the transformer to leak to the outside.
JP 2004-111135 A

  However, in the ion generator described in Patent Document 1, only countermeasures against noise emitted by a transformer that generates a high voltage are taken, and no countermeasure is taken against noise emitted from other parts of the ion generator. It was a countermeasure. For this reason, it is desired to prevent the noise from other parts from being released to the outside of the ion generator, and to further reduce the influence on other electric devices installed in the vicinity of the ion generator.

  The present invention has been made in view of such circumstances, and an object of the present invention is to surround a connection portion such as a lead pin or a lead wire that connects a circuit board provided with a transformer and an ion generation portion. It is an object of the present invention to provide an ion generator that can prevent noise generated by a connecting portion from being released to the outside by providing an electromagnetic shielding member.

  Another object of the present invention is that a transformer and a circuit board are accommodated in a casing in which an opening is formed, and a cylindrical projecting portion is provided around the opening, and the projecting end of the cylindrical projecting portion is provided. When the ion generating part is provided on the side, and the ion generating part and the circuit board are connected by a connecting part such as a lead pin or a lead wire passing through the cylindrical protruding part, the cylindrical protruding part is connected to the casing-side electromagnetic shielding member. It is an object of the present invention to provide an ion generator that can prevent noise generated by a connecting portion from being released to the outside.

  In addition, another object of the present invention is that the casing-side electromagnetic shielding member provided on the cylindrical projecting portion is a cylindrical conductor, so that noise generated by the connecting portion can be easily and reliably emitted to the outside. An object of the present invention is to provide an ion generator that can prevent the occurrence of the ion generation.

  Another object of the present invention is to apply noise shielding paint to a housing that accommodates a circuit board, a transformer, a connection portion, and the like, so that noise generated in the housing is released to the outside. An object of the present invention is to provide an ion generator that can prevent this more reliably.

  Another object of the present invention is to provide an electromagnetic shielding member that surrounds the connecting portion in the cylindrical projecting portion of the housing, thereby more reliably releasing noise generated by the connecting portion to the outside. It is an object of the present invention to provide an ion generator that can be prevented.

  Another object of the present invention is that the electromagnetic shielding member provided surrounding the connecting portion is a cylindrical conductor, so that noise generated by the connecting portion can be easily and reliably emitted to the outside. An object of the present invention is to provide an ion generator that can prevent this.

  Another object of the present invention is to provide a slit or a circular hole in an electromagnetic shielding member provided so as to surround the connection portion, so that a high voltage portion on the circuit board is made of urethane resin or the like. In the case of insulation, an ion generator is provided in which the urethane resin injected onto the circuit board after the electromagnetic shielding member is provided can easily flow into the electromagnetic shielding member from the hole, or the urethane resin can be injected from the hole. There is.

  Another object of the present invention is to provide an electromagnetic shielding member that surrounds the connecting portion in a mesh shape so that the high voltage location on the circuit board is insulated with urethane resin or the like. It is an object of the present invention to provide an ion generating apparatus that can easily inject urethane resin injected onto a circuit board into the electromagnetic shielding member from a hole after being provided, or can inject urethane resin from a gap between meshes.

  Another object of the present invention is to provide a circuit board and an ion when the circuit board provided with the transformer and the ion generating part are arranged facing each other and connected by a connecting part such as a lead pin or a lead wire. An object of the present invention is to provide an ion generator that can reduce noise emitted from the ion generator to the outside by providing an electromagnetic shielding member between the generators so as to cover the ion generator.

  Another object of the present invention is that a plate-like conductor is provided as an electromagnetic shielding member between the ion generator and the circuit board so that it can be easily and reliably discharged from the ion generator to the outside. An object of the present invention is to provide an ion generator capable of reducing noise.

  Another object of the present invention is that the ion generator and the circuit board are formed by using a conductive member having an opposing part facing the ion generating part and two legs provided so as to intersect the opposing part as an electromagnetic shielding member. By providing it in between, it is an object to provide an ion generator that can easily arrange an electromagnetic shielding member upright on a circuit board and can reliably reduce noise emitted from the ion generator to the outside.

  Another object of the present invention is to form a through hole in the electromagnetic shielding member for passing a connecting portion such as a lead pin or lead wire, so that the electromagnetic shielding member is interposed between the ion generating portion and the circuit board. It is an object of the present invention to provide an ion generator that can be easily arranged.

  Another object of the present invention is to provide an ion generator capable of providing a connecting portion such as a lead pin or a lead wire through a mesh gap by forming the electromagnetic shielding member in a mesh shape.

  Another object of the present invention is to connect the electromagnetic shielding member to the ground potential, so that the noise absorbed by the electromagnetic shielding member can be released to the ground potential, and the noise is more effectively emitted to the outside. An object of the present invention is to provide an ion generator that can prevent the occurrence of the ion generation.

  An ion generator according to the present invention includes a transformer, an ion generator that generates ions when an output voltage from the transformer is applied, a circuit board provided with the transformer, the ion generator, and the ion generator. An ion generating apparatus including a connection portion that connects a circuit board includes an electromagnetic shielding member that surrounds the connection portion.

  In the present invention, an electromagnetic shielding member is provided so as to surround a connection portion connecting the circuit board provided with the transformer and the ion generating portion. At the connection that supplies the output voltage from the transformer to the ion generator, the noise that is released along with the operation of ion generation is absorbed by the electromagnetic shielding member, and the noise is released to the outside of the ion generator. To prevent.

  In addition, an ion generator according to the present invention includes a casing having an opening formed therein and a cylindrical projecting portion protruding around the opening, the transformer being housed in the casing, and the transformer. A circuit board, an ion generating part that is provided on a protruding end side of the cylindrical protruding part and generates an ion when an output voltage from the transformer is applied, and the ion generating part and the inside through the cylindrical protruding part An ion generating apparatus including a connection portion that connects a circuit board includes a casing-side electromagnetic shielding member that surrounds the cylindrical protrusion of the casing.

  In the present invention, the transformer and the circuit board are accommodated in the casing in which the opening is formed, the cylindrical projecting portion is provided in the casing so as to surround the opening, and the ion generating portion is provided on the projecting end side of the cylindrical projecting portion. A connecting portion for connecting the ion generating portion and the circuit board is provided in the cylindrical protruding portion, and a casing-side electromagnetic shielding member is provided around the cylindrical protruding portion. At the connection that supplies the output voltage from the transformer to the ion generator, the noise that is released along with the ion generation operation is absorbed by the casing-side electromagnetic shielding member, and the noise is released outside the ion generator. To prevent that.

  In the ion generator according to the present invention, the casing-side electromagnetic shielding member is a cylindrical conductor.

  In the present invention, a cylindrical conductor is provided on the cylindrical protrusion as a casing-side electromagnetic shielding member. By making both the cylindrical protrusion and the casing-side electromagnetic shielding member have substantially the same cylindrical shape, the casing-side electromagnetic shielding member can be fitted into the cylindrical protrusion and easily attached. Noise can be reliably absorbed by the case-side electromagnetic shielding member.

  In the ion generator according to the present invention, an electromagnetic shielding paint is applied to the casing.

  In the present invention, an electromagnetic shielding paint is applied to a housing that accommodates a circuit board, a transformer, a connection portion, and the like. Thereby, since the electromagnetic shielding paint absorbs noise generated in each part in the housing, noise is not emitted to the outside of the ion generator.

  Moreover, the ion generator which concerns on this invention is equipped with the electromagnetic shielding member surrounding the said connection part in the said cylindrical protrusion part, It is characterized by the above-mentioned.

  In the present invention, an electromagnetic shielding member is provided in the cylindrical projecting portion of the casing so as to surround the connecting portion. Noise generated from the connecting portion can be absorbed by the two electromagnetic shielding members of the casing side electromagnetic shielding member and the electromagnetic shielding member surrounding the connecting portion provided in the cylindrical protruding portion, so that the noise is further emitted to the outside of the ion generator. Hateful.

  Moreover, the ion generator which concerns on this invention is characterized by the electromagnetic shielding member surrounding the said connection part being a cylindrical conductor.

  In the present invention, a cylindrical conductor is provided as an electromagnetic shielding member so as to surround the connecting portion. The electromagnetic shielding member can be easily provided by passing the connecting portion of the lead pin or the lead wire through the cylinder of the electromagnetic shielding member, and noise can be reliably absorbed by the electromagnetic shielding member made of a conductor.

  The ion generator according to the present invention is characterized in that a hole is provided in the electromagnetic shielding member surrounding the connecting portion.

  In the present invention, a slit or a circular hole is formed in the electromagnetic shielding member provided so as to surround the connecting portion. When insulating high-voltage locations on the circuit board with urethane resin, etc., after the electromagnetic shielding member is provided, the urethane resin injected onto the circuit board is likely to flow into the electromagnetic shielding member from the hole. Easy to do. Or, since the urethane resin can be injected from the hole, the operation is easy.

  Moreover, the ion generator which concerns on this invention is characterized by the electromagnetic shielding member surrounding the said connection part being mesh shape.

  In the present invention, the electromagnetic shielding member provided so as to surround the connecting portion is formed in a mesh shape. When insulating high-voltage locations on the circuit board with urethane resin, etc., after the electromagnetic shielding member is provided, the urethane resin injected onto the circuit board is likely to flow into the electromagnetic shielding member from the hole. Easy to do. Or, since urethane resin can be injected from the gaps in the mesh, the operation is easy.

  Further, an ion generator according to the present invention includes a transformer, an ion generator that generates ions when an output voltage from the transformer is applied, and the ion generator that faces the ion generator. In an ion generation device comprising a provided circuit board, and the ion generation unit and a connection unit for connecting the circuit board, the ion generation unit is opposed to the circuit board between the ion generation unit and the circuit board. The electromagnetic shielding member provided so that the part to perform may be covered is characterized.

  In the present invention, the circuit board on which the transformer is provided and the ion generating part are arranged to face each other, and an electromagnetic shielding member is provided between the circuit board and the ion generating part so as to cover the ion generating part. Noise emitted from the ion generation part in accordance with the ion generation operation is absorbed by the electromagnetic shielding member, and noise released to the outside of the ion generation device is reduced.

  In the ion generator according to the present invention, the electromagnetic shielding member is a plate-like conductor.

  In the present invention, a plate-like conductor is provided as an electromagnetic shielding member between the ion generator and the circuit board. Noise can be reliably absorbed by the conductive electromagnetic shielding member.

  Moreover, the ion generator which concerns on this invention WHEREIN: The said electromagnetic shielding member has a plate-shaped opposing part which opposes the said ion generating part, and two leg parts provided crossing this opposing part. It is characterized by being.

  In the present invention, a conductor having a facing portion facing the ion generating portion and two legs provided so as to intersect the facing portion is provided as an electromagnetic shielding member between the ion generating portion and the circuit board. By providing the legs, the electromagnetic shielding member can be erected on the circuit board. Further, noise can be reliably absorbed by the conductive electromagnetic shielding member.

  The ion generator according to the present invention is characterized in that a through-hole through which the connecting portion is passed is formed in the electromagnetic shielding member.

  In the present invention, a through hole is formed in the electromagnetic shielding member. A connection portion such as a lead pin or a lead wire for connecting the ion generation portion and the circuit board is arranged through the through hole of the electromagnetic shielding member. Thereby, an electromagnetic shielding member can cover an ion generating part widely irrespective of the position of a connection part.

  The ion generator according to the present invention is characterized in that the electromagnetic shielding member has a mesh shape.

  In the present invention, the electromagnetic shielding member has a mesh shape. A connection portion such as a lead pin or a lead wire that connects the ion generation portion and the circuit board is disposed through a gap in the mesh of the electromagnetic shielding member. Thereby, an electromagnetic shielding member can cover an ion generating part widely irrespective of the position of a connection part.

  Moreover, the ion generator according to the present invention is characterized in that the electromagnetic shielding member is connected to a ground potential.

  In the present invention, the electromagnetic shielding member is connected to the ground potential. By absorbing the noise accompanying the operation of ion generation by the electromagnetic shielding member and flowing the absorbed noise to the ground potential, it is possible to more effectively prevent the noise from being released outside the ion generator.

  In the case of the present invention, noise generated by the connecting portion is externally provided by surrounding the connecting portion such as a lead pin or lead wire connecting the circuit board provided with the transformer and the ion generating portion with an electromagnetic shielding member. Since it can be prevented from being released, it is possible to prevent malfunctions due to noise of other devices such as disturbance of the video or audio of a television or radio arranged near the ion generator.

  Further, in the case of the present invention, the transformer and the circuit board are accommodated in the casing in which the opening is formed and the cylindrical protruding portion is provided so as to surround the opening, and ions are generated on the protruding end side of the cylindrical protruding portion. When the ion generating part and the circuit board are connected by a connecting part such as a lead pin or a lead wire that passes through the cylindrical protruding part, a casing-side electromagnetic shielding member is provided on the cylindrical protruding part. Since it is possible to prevent the noise generated by the connection part from being released to the outside, it is possible to prevent malfunction due to noise of other devices arranged near the ion generator.

  Further, in the case of the present invention, the casing-side electromagnetic shielding member can be easily attached by using the casing-side electromagnetic shielding member provided on the cylindrical protrusion as a cylindrical conductor. Since it is possible to suppress the complication of the manufacturing process due to the provision of the conductor, and the noise can be surely absorbed by the electromagnetic shielding member on the housing side made of the conductor, malfunction due to noise of other equipment arranged near the ion generator is prevented. Can be prevented.

  In addition, according to the present invention, it is more reliable that noise generated in the casing is released to the outside by applying an electromagnetic shielding paint to the casing in which the circuit board, the transformer, the connection portion, and the like are accommodated. Therefore, it is possible to more reliably prevent malfunction caused by noise of other devices arranged near the ion generator.

  Further, in the case of the present invention, the electromagnetic shielding member surrounding the connecting portion and the electromagnetic shielding member surrounding the connecting portion provided in the cylindrical protruding portion are provided by surrounding the connecting portion within the cylindrical protruding portion of the casing. The two electromagnetic shielding members of the shielding member can absorb the noise generated from the connection part and more reliably prevent the noise generated by the connection part from being released to the outside. It is possible to more reliably prevent malfunction due to noise of the equipment.

  Further, in the case of the present invention, the electromagnetic shielding member provided to surround the connection portion is a cylindrical conductor, so that the connection portion by the lead pin or the lead wire passes through the cylinder of the electromagnetic shielding member, Since the electromagnetic shielding member can be easily provided, the complexity of the manufacturing process due to the provision of the electromagnetic shielding member can be suppressed, and noise can be reliably absorbed by the electromagnetic shielding member made of a conductor. It is possible to prevent malfunction due to noise of other devices arranged nearby.

  Further, according to the present invention, when a high voltage portion on a circuit board is insulated with urethane resin or the like by penetrating a hole such as a slit or a circle in an electromagnetic shielding member provided surrounding the connecting portion. After the electromagnetic shielding member is provided, the urethane resin injected onto the circuit board easily flows into the electromagnetic shielding member from the hole, or the urethane resin can be injected from the hole, so the electromagnetic shielding member is provided. Therefore, the complexity of the manufacturing process can be suppressed.

  In addition, in the case of the present invention, after the electromagnetic shielding member is provided in the case where the high voltage portion on the circuit board is insulated with urethane resin or the like by forming the electromagnetic shielding member provided surrounding the connecting portion in a mesh shape. Since the urethane resin injected onto the circuit board easily flows into the electromagnetic shielding member from the hole, or the urethane resin can be injected from the mesh gap, the manufacturing process is complicated by providing the electromagnetic shielding member. Can be suppressed.

  Further, in the case of the present invention, when the circuit board provided with the transformer and the ion generating part are arranged facing each other and connected by a connecting part such as a lead pin or a lead wire, the circuit board and the ion generating part are disposed. In addition, by providing an electromagnetic shielding member so as to cover the ion generation unit, noise emitted from the ion generation unit to the outside of the ion generation device can be reduced, so that noise of other devices arranged near the ion generation device can be reduced. Can prevent malfunction.

  Further, in the case of the present invention, by providing a plate-like conductor as an electromagnetic shielding member between the ion generator and the circuit board, the noise generated by the ion generator can be reliably absorbed with a simple configuration, and the ion generator Therefore, it is possible to prevent malfunction caused by noise of other devices arranged near the ion generator.

  Further, in the case of the present invention, a conductive member having a facing portion facing the ion generating portion and two legs provided so as to cross the facing portion is provided as an electromagnetic shielding member between the ion generating portion and the circuit board. Therefore, since the electromagnetic shielding member can be erected on the circuit board, the electromagnetic shielding member can be easily arranged, and the noise generated by the ion generation unit can be reliably absorbed with a simple configuration and released to the outside of the ion generation apparatus. Since noise can be reduced, it is possible to prevent malfunction due to noise of other devices arranged near the ion generator.

  In the case of the present invention, the electromagnetic shielding member can be easily arranged between the ion generating portion and the circuit board by forming a through hole in the electromagnetic shielding member for passing the connecting portion such as a lead pin or a lead wire. In addition, since the electromagnetic shielding member can cover the ion generation part widely regardless of the position of the connection part, it is possible to more effectively absorb the noise generated by the ion generation part.

  In addition, in the case of the present invention, since the electromagnetic shielding member is meshed, a connection portion such as a lead pin or a lead wire can be provided through the gap of the mesh, so that the electromagnetic shielding member is provided between the ion generating portion and the circuit board. In addition, since the electromagnetic shielding member can cover the ion generation part widely regardless of the position of the connection part, the noise generated by the ion generation part can be absorbed more effectively. .

  In addition, according to the present invention, by connecting the electromagnetic shielding member to the ground potential, noise absorbed by the electromagnetic shielding member can be released to the ground potential, and noise can be more effectively released to the outside. Since this can be prevented, it is possible to more reliably prevent malfunction due to noise of other devices arranged near the ion generator.

Hereinafter, the present invention will be specifically described with reference to the drawings showing embodiments thereof.
(Embodiment 1)
FIG. 1 is a schematic cross-sectional view showing a configuration of an ion generator according to Embodiment 1 of the present invention. In the figure, reference numeral 1 denotes a substantially rectangular plate-like ion generating element, which generates positive ions and negative ions by a discharge phenomenon generated by application of a high voltage generated by the transformer 3. The ion generating element 1 is arranged so that one surface is exposed from an opening 5a formed in the casing 5 of the ion generating device having a substantially rectangular parallelepiped shape, and generated positive ions and negative ions are formed outside the ion generating device. Is supposed to be released. Further, the opening 5a of the housing 5 has a substantially rectangular shape that is substantially the same size as the exposed surface of the ion generating element 1.

  Inside the housing 5, a circuit board 2 is disposed opposite to the ion generating element 1 with a certain distance. The circuit board 2 has a substantially rectangular plate shape larger than that of the ion generating element 1, and one surface is a mounting surface 2a on which circuit components such as a resistor, a capacitor, and a transformer 3 are mounted, and the other surface is a circuit component. This is a solder connection surface 2b for performing soldering. The circuit board 2 is arranged so that the solder connection surface 2 b faces the ion generating element 1, and the circuit board 2 and the ion generating element 1 are connected by two lead pins 4, and ions are generated from the circuit board 2. A high voltage generated by the transformer 3 can be supplied to the element 1.

  A transformer 3 is mounted on the mounting surface 2 a of the circuit board 2 at a position that does not overlap with a portion where the ion generating element 1 is arranged in a plan view of the circuit board 2. The transformer 3 is a substantially rectangular parallelepiped circuit component that boosts or steps down an AC voltage by electromagnetic induction, and is configured by winding two or more coils around a common iron core according to the number of turns of each coil. Output voltage. The ion generator generates positive ions and negative ions by generating a high voltage by the transformer 3 and applying the high voltage to the ion generating element 1. The high voltage generated by the transformer 3 is given from the circuit board 2 to the ion generating element 1 via the lead pins 4 and 4.

  FIG. 2 is a perspective view showing the configuration of the ion generating element 1, and FIG. 3 is a cross-sectional view taken along the line III-III in FIG. In the ion generating element 1, a grid-like discharge electrode 32 is disposed on one surface of a substantially rectangular plate-like dielectric 31, and a planar induction electrode 33 is disposed inside the dielectric 31 so as to face the discharge electrode 32. And the discharge electrode 32 is covered with a thin dielectric protective layer 34. The other surface of the dielectric 31 is provided with an electrode contact 35 for supplying a high voltage to the discharge electrode 32 and an electrode contact 36 for supplying a high voltage to the induction electrode 33. , 36 penetrate through the dielectric 31 and are connected to the discharge electrode 32 and the induction electrode 33. The dielectric 31 and the protective layer 34 are made of alumina as a dielectric, and the discharge electrode 32, the induction electrode 33, and the electrode contacts 35 and 36 are made of a metal material such as tungsten or molybdenum.

  Further, the ion generating element 1 is disposed in the housing 5 so that the discharge electrode 32 is outside the ion generating device, and the lead pins 4 and 4 are connected to the electrode contacts 35 and 36, respectively. The high voltage generated by the transformer 3 from 2 is supplied to the discharge electrode 32 and the induction electrode 33.

  In order to prevent noise generated from the transformer 3 from being released to the outside when supplying a high voltage to the ion generating element 1, the transformer 3 is covered with a metal cap 10 made of iron or copper. . The metal cap 10 is a metal container having a substantially rectangular parallelepiped that is slightly larger than the transformer 3 and having a space in which one surface of the rectangular parallelepiped is opened to accommodate the transformer 3. The metal cap 10 is connected to a ground pattern (not shown) formed on the circuit board 2 by a lead wire (not shown), and absorbs noise generated by the transformer 3 and flows to the ground pattern. It is like that.

  Furthermore, the metal cap 11 larger than the metal cap 10 is mounted from the direction almost perpendicular to the direction in which the metal cap 10 is put on the transformer 3, and the transformer 3 is mounted from the ends of the transformer 3, the metal cap 10 and the circuit board 2. It covers and covers up to the part that is covered. Similar to the metal cap 10, the metal cap 11 is a metal container in which one surface of a substantially rectangular parallelepiped is opened and an accommodation space is provided therein, and is connected to the ground pattern of the circuit board 2 by a lead wire. Since the metal cap 11 can cover one surface of the transformer 3 that cannot be covered by the metal cap 10, that is, the surface that contacts the mounting surface 2a of the circuit board 2, from the solder connection surface 2b side of the circuit board 2, The entire surface of the vessel 3 is covered with metal caps 10 and 11 so as to reliably absorb noise generated from the transformer 3.

  Between the ion generating element 1 and the circuit board 2 arranged to face each other, a cylindrical electromagnetic shielding member 20 whose opening shape is substantially rectangular is disposed. The electromagnetic shielding member 20 is a cylindrical member made of metal such as iron or copper, and lead pins 4 and 4 that connect the ion generating element 1 and the circuit board 2 are passed through the inside of the cylinder. Similarly to the metal caps 10 and 11, the electromagnetic shielding member 20 is connected to the ground pattern of the circuit board 2 by a lead wire, and a lead pin when a high voltage from the transformer 3 is supplied to the ion generating element 1. The noise emitted from 4 and 4 is absorbed and passed through the ground pattern.

  FIG. 4 is a perspective view showing the configuration of the electromagnetic shielding member 20 according to the present invention. The cylindrical electromagnetic shielding member 20 having an approximately rectangular opening has a slit 21 formed on one side surface substantially parallel to the axis of the cylinder. In the manufacturing process of the ion generator, when the solder connection surface 2b of the circuit board 2 is covered with the urethane resin for insulation, the urethane resin injected onto the circuit board 2 flows into the electromagnetic shielding member 20 from the slit 21. In addition, after the electromagnetic shielding member 20 is disposed, it is possible to perform insulation work using urethane resin. It is also possible to inject urethane resin from the slit 21.

  The noise emitted with the operation of the ion generator can be classified into, for example, a long wave, a medium wave, and a short wave according to the length of the wavelength. The noise emitted from the transformer 3 is mainly long wave and medium wave noise, and the noise emitted from the lead pins 4 and 4 and the ion generating element 1 is mainly short wave noise. Even when the slit 21 is formed in the electromagnetic shielding member 20 provided so as to surround the lead pins 4, 4, since the short wave noise is less leaked from the slit 21, the shielding effect by the electromagnetic shielding member 20 can be maintained.

  In the ion generator having the above-described configuration, the transformer 3 is covered with the metal caps 10 and 11, and the lead pins 4 and 4 are surrounded by the electromagnetic shielding member 20, so that the transformer 3 is transformed in accordance with the operation of the transformer 3 at the time of ion generation. Since the noise emitted from the device 3 and the noise emitted from the lead pins 4 and 4 can be absorbed and passed through the ground pattern of the circuit board 2, it is possible to prevent the noise from being released to the outside of the ion generator.

  In the present embodiment, the configuration in which the ion generating element 1 and the circuit board 2 are connected by the lead pins 4 and 4 is shown. However, the configuration is not limited to this, and for example, a configuration in which the connection is made by two lead wires. Also good. Moreover, although the structure which arrange | positions the ion generating element 1 and the circuit board 2 facing each other was shown, it does not necessarily need to oppose. In this case, the electromagnetic shielding member 20 is curved or bent, and the ion generating element 1 and the circuit are arranged. It may be provided between the substrates 2. In addition, although the configuration in which the two lead pins 4 and 4 are surrounded by the single electromagnetic shielding member 20 is shown, the present invention is not limited to this, and the lead pins 4 and 4 may be surrounded by the two electromagnetic shielding members. Moreover, although the structure which connects the metal caps 10 and 11 and the electromagnetic shielding member 20 to the ground pattern of the circuit board 2 with the lead wire was shown, it is not restricted to this, The structure connected with a lead pin may be sufficient. Further, a configuration in which the ground pattern is directly contacted may be used, or a configuration in which the ground pattern is not connected may be used. Moreover, when the metal caps 10 and 11 are not required, the structure which does not provide these may be sufficient. Moreover, although the structure which forms the slit 21 for inject | pouring urethane resin to the electromagnetic shielding member 20 was shown, it is not restricted to this, The structure which does not form the slit 21 may be sufficient, and it shows in the following modifications. It may be a configuration.

  (Modification 1) FIG. 5 is a perspective view showing a configuration of electromagnetic shielding member 20 according to Modification 1 of Embodiment 1 of the present invention. On the four side surfaces of the electromagnetic shielding member 20 whose opening shape forms a substantially rectangular tube shape, substantially circular through holes 22, 22... Are formed, respectively. When the circuit board 2 is insulated with urethane resin, the urethane resin flows into the electromagnetic shielding member 20 from the through holes 22, 22. In the case where the through holes 20 are formed in the electromagnetic shielding member 20, the same effect as the configuration in which the slits 21 are formed in the electromagnetic shielding member 20 can be obtained.

  (Modification 2) FIG. 6 is a perspective view showing a configuration of electromagnetic shielding member 20 according to Modification 2 of Embodiment 1 of the present invention. The electromagnetic shielding member 20 is formed in a cylindrical shape having a substantially rectangular opening using a mesh-like metal. When the circuit board 2 is insulated with the urethane resin, the urethane resin flows into the electromagnetic shielding member 20 from the mesh gap, so that the circuit board 2 can be easily insulated. Even when the electromagnetic shielding member 20 has a mesh shape, the same effect as the configuration in which the slit 21 is formed in the electromagnetic shielding member 20 can be obtained.

(Embodiment 2)
FIG. 7 is a schematic cross-sectional view showing the configuration of the ion generator according to Embodiment 2 of the present invention. A substantially rectangular opening 6a is formed in the housing 6 of the ion generating apparatus that accommodates the circuit board 2, the transformer 3, the metal caps 10, 11 and the like, and surrounds the opening 6a from the periphery of the opening 6a. A hollow cylindrical projecting portion 7 protrudes toward the outside of 6. The ion generating element 1 is disposed at the protruding end of the cylindrical protruding portion 7, and the transformer 3 is arranged inside the housing 6 with the cylindrical protruding portion 7 facing the ion generating element 1 therebetween. Is mounted on the circuit board 2. The ion generating element 1 and the circuit board 2 are connected by two lead pins 4 and 4 that pass through the cylindrical protrusion 7.

  Between the ion generating element 1 and the circuit board 2 that are arranged to face each other, a cylindrical electromagnetic shielding member 20 having an approximately rectangular opening is disposed. The electromagnetic shielding member 20 is a metallic cylindrical member, and is disposed inside the cylindrical protruding portion 7, and lead pins 4, 4 that connect the ion generating element 1 and the circuit board 2 are passed through the inside of the cylinder. The electromagnetic shielding member 20 is connected to the ground pattern of the circuit board 2 by a lead wire, and absorbs noise generated from the lead pins 4 and 4 when a high voltage from the transformer 3 is supplied to the ion generating element 1. Then, it is made to flow in the ground pattern.

  A casing-side electromagnetic shielding member 40 is provided around the outer periphery of the cylindrical protrusion 7. The casing-side electromagnetic shielding member 40 is made of a cylindrical metal conductor whose opening shape is substantially rectangular, and is fitted and fixed to the cylindrical protrusion 7. By providing the casing-side electromagnetic shielding member 40, the lead pins 4, 4 are surrounded by the electromagnetic shielding member 20 and the casing-side electromagnetic shielding member 40, so that noise generated from the lead pins 4, 4 is released to the outside of the ion generator. This can be prevented more reliably.

  In addition, an electromagnetic shielding coating 45 containing a high magnetic permeability component, for example, iron powder, is applied to the outer surfaces of the casing 6 and the cylindrical protrusion 7 of the ion generator, and noise generated in the casing 6 is generated. It is prevented from being released to the outside of the ion generator.

  In the ion generator configured as described above, the metal caps 10 and 11 can prevent the noise generated by the transformer 3 from being released to the outside, and the lead pin 4 can be prevented by the electromagnetic shielding member 20 and the casing-side electromagnetic shielding member 40. 4 can be prevented from being released to the outside, and the electromagnetic shielding paint 45 applied to the outer surface of the housing 6 can be used to protect the circuit board 2, the transformer 3, the lead pins 4, 4, and the like in the housing 6. It is possible to prevent the noise generated by each component from being released to the outside.

  In addition, in Embodiment 2, although the structure which provides the housing | casing side electromagnetic shielding member 40 in the outer periphery of the cylindrical protrusion part 7 was shown, it is not restricted to this, It is the structure provided in the inner periphery of the cylindrical protrusion part 7. There may be. Moreover, although the structure which apply | coats the electromagnetic shielding coating 45 to the outer surface of the housing | casing 6 was shown, it is not restricted to this, The structure applied to the inner surface of the housing | casing 6 may be sufficient. Moreover, you may connect the housing | casing side electromagnetic shielding member 40 to the ground pattern of the circuit board 2 with a lead wire etc., In this case, it can prevent releasing noise more reliably outside.

  In addition, since the other structure of the ion generator which concerns on Embodiment 2 is the same as that of the ion generator which concerns on Embodiment 1, the same code | symbol is attached | subjected to a corresponding location and detailed description is abbreviate | omitted. To do.

(Embodiment 3)
FIG. 8 is a schematic cross-sectional view showing the configuration of the ion generator according to Embodiment 3 of the present invention. In FIG. 8, reference numeral 50 denotes an electromagnetic shielding member, which is a rectangular plate member made of metal such as iron or copper. The electromagnetic shielding member 50 is slightly shorter than the distance between the two lead pins 4 and 4 that connect the ion generating element 1 and the circuit board 2, and the discharge electrode of the ion generating element 1 is between the lead pins 4 and 4. It is provided so as to face the surface opposite to the surface provided with 32 and to cover this surface. The electromagnetic shielding member 50 is connected to the ground pattern of the circuit board 2 by a lead wire (not shown).

  In the ion generating apparatus having the above configuration, the electromagnetic shielding member 50 absorbs the noise emitted by the ion generating element 1 during the ion generating operation and can flow to the ground pattern of the circuit board 2. Noise emitted to the outside of the device can be reduced.

  In the third embodiment, the ion generator includes only the electromagnetic shielding member 50. However, the present invention is not limited to this. The lead pin 4 further includes the electromagnetic shielding member 20 described in the first embodiment. 4 may be configured to absorb the noise emitted by the case 4, and when the cylindrical protrusion is formed on the case as in the ion generator of the second embodiment, the case side electromagnetic shielding member 40 is further provided. It may be a configuration. Moreover, although the structure which makes the electromagnetic shielding member 50 plate shape was shown, it is not restricted to this, Other shapes may be sufficient, for example, it is good also as a structure of the modification shown below.

  (Modification 1) FIG. 9 is a schematic cross-sectional view showing a configuration of an ion generator according to Modification 1 of Embodiment 3 of the present invention. In FIG. 9, reference numeral 55 denotes an electromagnetic shielding member, which is a rectangular plate-shaped facing portion 55a facing the ion generating element 1, and two rectangular plate-shaped leg portions 55b and 55b provided substantially vertically at both ends of the facing portion 55a. And a metal member such as iron or copper having a substantially U-shaped cross section. The facing portion 55a of the electromagnetic shielding member 55 is slightly shorter than the distance between the two lead pins 4 and 4 that connect the ion generating element 1 and the circuit board 2, and the leg portions 55b and 55b are connected to the ion generating element 1 and the circuit board 2, respectively. The distance between the circuit boards 2 is slightly shorter. Thereby, the electromagnetic shielding member 55 can be provided between the lead pins 4 and 4 and between the ion generating element 1 and the circuit board 2. Therefore, the facing portion 55a is opposed to and covers the surface opposite to the surface on which the discharge electrode 32 of the ion generating element 1 is provided, and the leg portions 55b and 55b are connected to the solder connection surface 2b of the circuit board 2. The electromagnetic shielding member 55 is provided in contact with the electromagnetic wave. The electromagnetic shielding member 55 is connected to the ground pattern of the circuit board 2 by directly contacting the leg portions 55b and 55b or using a lead wire or the like.

  In the ion generating apparatus having the above configuration, the electromagnetic shielding member 55 absorbs noise emitted by the ion generating element 1 during the ion generation operation and can flow to the ground pattern of the circuit board 2. Noise emitted to the outside of the device can be reduced. Moreover, since the electromagnetic shielding member 55 has the leg portions 55b and 55b, the leg portions 55b and 55b can be easily disposed by contacting the circuit board 2.

  (Modification 2) FIG. 10 is a schematic cross-sectional view showing a configuration of an ion generator according to Modification 2 of Embodiment 3 of the present invention. In FIG. 10, 60 is an electromagnetic shielding member, which is a rectangular plate member made of metal such as iron or copper. The electromagnetic shielding member 60 is sufficiently larger than the ion generating element 1, and when arranged opposite to the ion generating element 1, the entire surface opposite to the surface on which the discharge electrode 32 of the ion generating element 1 is provided. Can be covered. For this reason, the electromagnetic shielding member 60 has two through holes 61 and 61 through which the two lead pins 4 and 4 connecting the ion generating element 1 and the circuit board 2 are passed. Thereby, the electromagnetic shielding member 60 is arranged so as to cover the ion generating element 1 without obstructing the connection between the ion generating element 1 and the circuit board 2 by the lead pins 4 and 4. The electromagnetic shielding member 60 is connected to the ground pattern of the circuit board 2 by a lead wire (not shown).

  The noise emitted from the ion generating element 1 is mainly short-wave noise, and even when the through holes 61 and 61 are formed in the electromagnetic shielding member 60, the short-wave noise leaks from the through holes 61 and 61. Therefore, the shielding effect by the electromagnetic shielding member 60 can be maintained.

  In the ion generating apparatus having the above configuration, the ion generating element 1 is covered with the electromagnetic shielding member 60 larger than the ion generating element 1 without hindering the connection between the ion generating element 1 and the circuit board 2 by the lead pins 4 and 4. Since the noise generated by the ion generating element 1 can be more reliably absorbed and passed through the ground pattern of the circuit board 2, noise emitted to the outside of the ion generating device can be reduced. .

  (Modification 3) FIG. 11: is typical sectional drawing which shows the structure of the ion generator which concerns on the modification 3 of Embodiment 3 of this invention. In FIG. 11, reference numeral 65 denotes an electromagnetic shielding member, which is a rectangular plate-shaped facing portion 65a facing the ion generating element 1 and two rectangular plate-shaped leg portions 65b and 65b provided substantially vertically at both ends of the facing portion 65a. And a metal member such as iron or copper having a substantially U-shaped cross section. The facing portion 65a of the electromagnetic shielding member 65 is substantially the same size as the ion generating element 1, and the leg portions 65b and 65b are slightly shorter than the distance between the ion generating element 1 and the circuit board 2. It is. As a result, the electromagnetic shielding member 65 is disposed between the ion generating element 1 and the circuit board 2 so that the facing portion 65a faces the opposite surface of the surface on which the discharge electrode 32 of the ion generating element 1 is provided. The leg portions 65 b and 65 b are provided so as to cover the solder connection surface 2 b of the circuit board 2. The electromagnetic shielding member 65 is formed with two through holes 66 and 66 through which the two lead pins 4 and 4 connecting the ion generating element 1 and the circuit board 2 are passed. Thus, the electromagnetic shielding member 60 can be arranged between the ion generating element 1 and the circuit board 2 without hindering the connection between the ion generating element 1 and the circuit board 2 by the lead pins 4 and 4. The electromagnetic shielding member 65 is connected to the ground pattern of the circuit board 2 by directly contacting the leg portions 65b and 65b or using a lead wire or the like.

  In the ion generating apparatus having the above configuration, the electromagnetic shielding member 65 having a size substantially equal to that of the ion generating element 1 is provided without impeding the connection between the ion generating element 1 and the circuit board 2 by the lead pins 4 and 4. 1, the noise generated by the ion generating element 1 can be more reliably absorbed and passed through the ground pattern of the circuit board 2. Moreover, since the electromagnetic shielding member 65 has the leg portions 65b and 65b, the leg portions 65b and 65b can be easily disposed by contacting the circuit board 2.

  (Modification 4) FIG. 12 is a schematic cross-sectional view showing a configuration of an ion generator according to Modification 4 of Embodiment 3 of the present invention. In FIG. 12, reference numeral 70 denotes an electromagnetic shielding member, which is a rectangular mesh member made of metal such as iron or copper. The electromagnetic shielding member 70 is sufficiently larger than the ion generating element 1, and when arranged opposite to the ion generating element 1, the entire surface opposite to the surface on which the discharge electrode 32 of the ion generating element 1 is provided. Can be covered. For this reason, the two lead pins 4 and 4 connect the ion generating element 1 and the circuit board 2 through the mesh gap of the electromagnetic shielding member 70. The electromagnetic shielding member 70 is connected to the ground pattern of the circuit board 2 by a lead wire (not shown).

  In the ion generator having the above configuration, the lead pins 4, 4 are passed through the mesh gap of the electromagnetic shielding member 70, so that the connection between the ion generating element 1 and the circuit board 2 by the lead pins 4, 4 is not hindered. The electromagnetic shielding member 70 larger than the generating element 1 can be disposed so as to cover the ion generating element 1, and the noise generated by the ion generating element 1 can be more reliably absorbed and flowed to the ground pattern of the circuit board 2. Therefore, noise emitted to the outside of the ion generator can be reduced.

  Since the other configurations of the ion generator according to the third embodiment and this modification are the same as those of the ion generator according to the first embodiment, the corresponding portions are denoted by the same reference numerals and detailed. The detailed explanation is omitted.

It is typical sectional drawing which shows the structure of the ion generator which concerns on Embodiment 1 of this invention. It is a perspective view which shows the structure of an ion generating element. It is sectional drawing by the III-III line of FIG. It is a perspective view which shows the structure of the electromagnetic shielding member which concerns on this invention. It is a perspective view which shows the structure of the electromagnetic shielding member which concerns on the modification 1 of Embodiment 1 of this invention. It is a perspective view which shows the structure of the electromagnetic shielding member which concerns on the modification 2 of Embodiment 1 of this invention. It is typical sectional drawing which shows the structure of the ion generator which concerns on Embodiment 2 of this invention. It is typical sectional drawing which shows the structure of the ion generator which concerns on Embodiment 3 of this invention. It is typical sectional drawing which shows the structure of the ion generator which concerns on the modification 1 of Embodiment 3 of this invention. It is typical sectional drawing which shows the structure of the ion generator which concerns on the modification 2 of Embodiment 3 of this invention. It is typical sectional drawing which shows the structure of the ion generator which concerns on the modification 3 of Embodiment 3 of this invention. It is typical sectional drawing which shows the structure of the ion generator which concerns on the modification 4 of Embodiment 3 of this invention.

Explanation of symbols

1 Ion generator (ion generator)
2 Circuit board 3 Transformer 4 Lead pin (connection part)
5, 6 Housing 5a, 6a Opening 7 Cylindrical protrusion 10, 11 Metal cap 20, 50, 55, 60, 65, 70 Electromagnetic shielding member 21 Slit 22 Through-hole 40 Housing side electromagnetic shielding member 45 Electromagnetic shielding paint 55a, 65a Opposing part 55b, 65b Leg part 61, 66 Through-hole

Claims (14)

A transformer, an ion generation unit that generates ions when an output voltage from the transformer is applied, a circuit board provided with the transformer, and a connection unit that connects the ion generation unit and the circuit board. In an ion generator comprising:
An ion generator comprising an electromagnetic shielding member surrounding the connecting portion. A casing having a cylindrical protrusion formed so as to project around the opening, a transformer, a circuit board provided with the transformer, and the cylindrical protrusion; An ion provided on the projecting end side and generating an ion when an output voltage from the transformer is applied, and a connection unit connecting the ion generating unit and the circuit board through the cylindrical projecting portion In the generator,
An ion generator comprising a casing-side electromagnetic shielding member surrounding the cylindrical protrusion of the casing.   The ion generator according to claim 2, wherein the casing-side electromagnetic shielding member is a cylindrical conductor.   The ion generator according to claim 2, wherein an electromagnetic shielding paint is applied to the casing.   The ion generator according to any one of claims 2 to 4, further comprising an electromagnetic shielding member surrounding the connection portion in the cylindrical projecting portion.   The ion generator according to claim 1 or 5, wherein the electromagnetic shielding member surrounding the connection portion is a cylindrical conductor.   The ion generator according to claim 6, wherein a hole is provided in the electromagnetic shielding member surrounding the connecting portion.   The ion generator according to claim 6, wherein the electromagnetic shielding member surrounding the connection portion is mesh-shaped. A transformer, an ion generator that generates ions when an output voltage from the transformer is applied thereto, a circuit board that is arranged opposite to the ion generator and provided with the transformer, and the ion generator And an ion generator comprising a connection part for connecting the circuit board,
An ion generator comprising an electromagnetic shielding member provided between the ion generator and the circuit board so as to cover a portion of the ion generator facing the circuit board.   The ion generator according to claim 9, wherein the electromagnetic shielding member is a plate-like conductor.   The ion generator according to claim 9, wherein the electromagnetic shielding member is a conductor having a plate-like facing portion facing the ion generating portion and two legs provided to intersect the facing portion. .   The ion generator of Claim 10 or Claim 11 with which the through-hole which lets the said connection part pass is formed in the said electromagnetic shielding member.   The ion generator according to claim 10 or 11, wherein the electromagnetic shielding member has a mesh shape.   The ion generator according to any one of claims 6 to 8, or 10 to 13, wherein the electromagnetic shielding member is connected to a ground potential.

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