JP2014053082A - Ion generator and ion-generating device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ion generator capable of being downsized as compared with conventional ones.SOLUTION: An ion generator 1 includes an ion-generating element 100 and a driving unit 200. The ion-generating element 100 includes: a high-voltage-side circuit board 130 provided with a first discharge electrode 152a, a second discharge electrode 152b, and a step-up transformer; and a casing 101 housing them. The driving unit 200 includes a low-voltage-side circuit board 210 provided with a power-supply circuit. A first land 131 electrically connected to the step-up transformer is provided on the high-voltage-side circuit board 130, and a second land 211 electrically connected to the power-supply circuit is provided on the low-voltage-side circuit board 210. The casing 101 has a window portion 114a for exposing the first land 131, and the first land 131 and the second land 211 are electrically connected with a portion of the low-voltage-side circuit board 210 where the second land 211 is provided being overlapped with the ion-generating element 100.

Description

  The present invention relates to an ion generator including an ion generation element including a discharge electrode that generates ions by discharge, and a drive unit including a power supply circuit for driving the ion generation element, and an ion generation apparatus including the ion generator. .

  Conventionally, various ion generators using a discharge phenomenon have been put into practical use. Usually, these ion generators include an electrode unit for generating ions, a step-up transformer for applying a high voltage to the electrode unit, and a drive unit for generating a drive voltage to be supplied to the step-up transformer. Consists of.

  As a document disclosing the ion generator, for example, there is JP 2008-16345 A (Patent Document 1). In the ion generator disclosed in Patent Document 1, the space inside the exterior case includes a block in which the electrode unit is accommodated, a block in which the step-up transformer is accommodated, and a block in which the drive unit is accommodated. These components can be insulated and sealed for each block, so that each component can be placed close to each other, thereby reducing the size.

JP 2008-16345 A

  By the way, in recent years, the step-up transformer has been downsized, and a surface-mount type transformer has been put to practical use as a small step-up transformer that can be used in an ion generator. When this surface mount type step-up transformer is used, an ion generating element having a configuration in which the above-described electrode unit and the step-up transformer are integrated can be obtained. Therefore, the ion generating element and the element are driven. It is possible to configure an ion generator with a drive unit for the purpose, and as a result, further miniaturization can be expected.

  However, an ion generator that makes full use of this advantage and an ion generator equipped with the ion generator have not yet existed, and improvements are being demanded.

  Therefore, the present invention has been made in view of the above-described problems, and an object thereof is to provide an ion generator and an ion generator that can be reduced in size as compared with the conventional art.

  The ion generator based on this invention is provided with the ion generating element containing the discharge electrode which generates ion by discharge, and the drive unit containing the power supply circuit for driving the said ion generating element. The ion generating element includes a high voltage side circuit board on which the discharge electrode is provided, and a booster voltage provided on the high voltage side circuit board to boost the drive voltage supplied from the drive unit and apply the boosted voltage to the discharge electrode. It further includes a transformer, a first land provided on the high voltage side circuit board and electrically connected to the step-up transformer, and a casing for housing the high voltage side circuit board. The drive unit further includes a low voltage side circuit board provided with the power supply circuit, and a second land provided on the low voltage side circuit board and electrically connected to the power supply circuit. The casing has a window portion that exposes the high-voltage circuit board in a portion where the first land is provided. In the ion generator according to the present invention, the portion of the low voltage side circuit board in which the second land is provided is superposed on the ion generating element along the thickness direction of the high voltage side circuit board; In this state, the first land and the second land are electrically connected.

  In the ion generator based on the said invention, it is preferable that the said casing further has the support frame part provided adjacent to the said window part. In this case, the low voltage side circuit board in the portion where the second land is provided is placed on the support frame, and in this state, the first land and the second land are connected. It is preferable to be electrically connected via a member.

  In the ion generator according to the present invention, the ion generating element is injected with a liquid resin into the casing and hardened to cure the step-up transformer. In order to prevent leakage of the liquid resin, a seal portion formed by applying and curing a liquid sealant so as to close a gap between the support frame portion and the high voltage side circuit board; Furthermore, it is preferable to include. In that case, it is preferable that a groove for preventing the liquid sealant from protruding is provided in the support frame along the end of the high-voltage circuit board.

  In the ion generator according to the present invention, the ion generating element is provided on the high-voltage side circuit board, and is electrically connected to the step-up transformer and the discharge electrode between them. It is preferable that it contains. In that case, it is preferable that the rectifying element is sealed by the resin sealing portion.

  In the ion generator according to the present invention, it is preferable that the discharge electrode has a needle-like positive electrode that generates positive ions and a needle-like negative electrode that generates negative ions. In that case, the positive electrode is disposed on one end side in the predetermined direction of the high-voltage side circuit board when viewed from the step-up transformer, and the negative electrode is disposed at the high voltage when viewed from the step-up transformer. It is preferable that it is arrange | positioned at the other end part side in the said predetermined direction of a side circuit board.

  The ion generator based on this invention is equipped with the ion generator based on the said invention, and the air blower which generate | occur | produces the airflow for sending out the ion generated by the said discharge electrode.

  ADVANTAGE OF THE INVENTION According to this invention, it can be set as the ion generator and ion generator by which size reduction was achieved compared with the past.

It is a schematic perspective view of the ion generator in embodiment of this invention. It is a figure which shows the circuit structure of the ion generating element shown in FIG. It is the schematic perspective view which looked at the ion generating element shown in FIG. 1 from diagonally upward. It is the schematic perspective view which looked at the ion generating element shown in FIG. 1 from diagonally downward. It is a top view of the ion generating element shown in FIG. It is a bottom view of the ion generating element shown in FIG. It is the schematic perspective view which looked at the high voltage side circuit board after component mounting integrated in the ion generating element shown in FIG. 1 from diagonally upward. It is the schematic perspective view which looked at the high voltage side circuit board after component mounting integrated in the ion generating element shown in FIG. 1 from diagonally downward. It is a disassembled perspective view of the ion generating element shown in FIG. It is a top view which shows the structure of the connection part of the ion generating element and drive unit of the ion generator shown in FIG. It is a schematic cross section which shows the structure of the connection part of the ion generating element and drive unit of the ion generator shown in FIG. It is a schematic cross section which shows the structure of the connection part of the ion generating element of the ion generator which concerns on a modification, and a drive unit.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. In the following embodiments, the same or common parts are denoted by the same reference numerals in the drawings, and description thereof will not be repeated.

  FIG. 1 is a schematic perspective view of an ion generator according to an embodiment of the present invention. FIG. 2 is a diagram showing a circuit configuration of the ion generating element shown in FIG. First, with reference to these FIG. 1 and FIG. 2, the structure and operation | movement of the ion generator 1 in this Embodiment and the circuit structure of the ion generating element 100 with which the ion generator 1 was equipped are demonstrated.

  As shown in FIG. 1, the ion generator 1 includes an ion generation element 100 and a drive unit 200. The ion generating element 100 includes a circuit module that forms a predetermined electric circuit by mounting various electric components on the high-voltage side circuit board 130, and the driving unit 200 includes various electric components that are included in the low-voltage side circuit board. It is composed of a circuit module constituting a predetermined electric circuit by being mounted on 210.

  The ion generating element 100 is covered with a casing 101 having a substantially flat outer shape that is approximately flat as a whole, and a high-voltage side circuit board 130 having a substantially rectangular shape in plan view is accommodated inside the casing 101. On the other hand, in the drive unit 200, the low-voltage circuit board 210 having a substantially rectangular shape in plan view is not particularly covered with a casing or the like, and is exposed.

  The ion generating element 100 is a circuit module including at least a discharge electrode that generates ions by discharge, and a step-up transformer that boosts the drive voltage supplied from the drive unit 200 and applies the boosted voltage to the discharge electrode. In the embodiment, as shown in FIGS. 1 and 2, the above-described high-voltage circuit board 130, the first discharge electrode (positive electrode) 152a and the second discharge electrode (negative electrode) 152b as the discharge electrodes, It has a surface mount type step-up transformer 140 (see FIG. 7 and the like) as a transformer.

  In the present embodiment, ion generating element 100 further includes first induction electrode 153a and second induction electrode 153b as induction electrodes, first diode 151a and second diode 151b as rectifier elements, and a capacitor. 161, a transistor 162, and a plurality of lands 131-134.

  On the other hand, the drive unit 200 is a circuit module including at least a power supply circuit for driving the ion generating element. In the present embodiment, as shown in FIG. And a power supply circuit (not shown) provided on the low-voltage side circuit board 210.

  In the present embodiment, drive unit 200 further includes a plurality of lands 211 to 214, a step-up transformer drive circuit (not shown), and connector 220. Here, the step-up transformer drive circuit is for controlling the drive of step-up transformer 140 provided in ion generating element 100, and connector 220 is, for example, an external power source (in this embodiment, such as a dry battery or a storage battery). A power supply terminal for connecting the ion generator 1 to a DC power supply (or a commercial power supply in some cases), a signal terminal for connecting the ion generator 1 to an external control device, and the like are included.

  As shown in FIG. 1, the ion generating element 100 and the drive unit 200 are arranged in close proximity by a screw or the like (not shown) and are physically fixed. By connecting the lands 131 to 134 and the plurality of lands 211 to 214 provided on the low-voltage side circuit board 210 in association with each other by the connection member 300 that realizes electrical connection therebetween, respectively. Are electrically connected. The type of the connection member 300 is not particularly limited, but known means such as a bonding wire, a conductive tape, and a conductive wire (bus bar) whose both ends are connected to the land by soldering or the like can be used. It is.

  In summary, in the ion generator 1 in the present embodiment, the drive voltage generated by the power supply circuit provided in the drive unit 200 is supplied to the ion generating element 100, which is supplied to the step-up transformer 140 to boost the voltage. Is applied to the first discharge electrode 152a and the second discharge electrode 152b, thereby generating a discharge between the first discharge electrode 152a and the first induction electrode 153a and between the second discharge electrode 152b and the second induction electrode 153b. Let The discharge generates positive ions in the space near the first discharge electrode 152a and negative ions in the space near the second discharge electrode 152b. Hereinafter, a circuit configuration for realizing this operation and its operation will be described in more detail with reference to FIG. 1 and FIG.

  The first discharge electrode 152a, the second discharge electrode 152b, the step-up transformer 140, the first induction electrode 153a, the second induction electrode 153b, the first diode 151a, the second diode 151b, the capacitor 161, the transistor 162, and the plurality of lands 131 described above. ˜134 are all provided on the high voltage side circuit board 130 of the ion generating element 100 and are electrically connected to each other by a wiring pattern provided on the high voltage side circuit board 130.

  Of the lands 131 to 134 provided on the high-voltage circuit board 130, the land 131 as a first land is a power input terminal, the land 132 is a first ground terminal, and the land 133 is a signal input terminal. The land 134 is a second ground terminal.

  The capacitor 161 is temporarily charged based on the drive voltage supplied via the land 131 and supplies it to the step-up transformer 140. One end of the capacitor 161 is connected to the land 131 and the other end is connected to the land 131. 132. The capacitor 161 is made of, for example, a film capacitor, and is configured by a surface mount component (see FIG. 8 and the like) that can be mounted on the high voltage circuit board 130.

  The step-up transformer 140 includes a primary winding 141 and a secondary winding 142, and boosts the supplied drive voltage and applies it to the first discharge electrode 152a and the second discharge electrode 152b. One end of the primary winding 141 is connected to the land 131, and the other end of the primary winding 141 is connected to the land 134 via the transistor 162. One end of the secondary winding 142 is connected to the one end of the primary winding 141 and to the land 131 described above, and the other end of the secondary winding 142 is connected to the first diode 151a and the second diode. Each of 151b is connected to first discharge electrode 152a and second discharge electrode 152b. The step-up transformer 140 is composed of surface-mounted components (see FIG. 7 and the like) that can be mounted on the high-voltage side circuit board 130.

  The transistor 162 is for controlling the drive of the step-up transformer 140, the base thereof is connected to the other end of the primary winding 141 of the step-up transformer 140, and the source thereof is connected to the land 134. The gate is connected to the land 133. The transistor 162 is composed of, for example, a packaged MOS transistor, and is configured by a surface mounting component (see FIG. 8 and the like) that can be mounted on the high voltage side circuit board 130.

  The first diode 151a is for rectifying current, and has an anode connected to the other end of the secondary winding 142 of the step-up transformer 140 and a cathode connected to the first discharge electrode 152a. Yes. The second diode 151b is for rectifying current, and has an anode connected to the second discharge electrode 152b and a cathode connected to the other end of the secondary winding 142 of the step-up transformer 140. Yes. Each of the first diode 151a and the second diode 151b is composed of discrete components, and is composed of an axial-type mounting component that can be mounted on the high-voltage side circuit board 130 (see FIGS. 7 and 8, etc.). Is done.

  The first discharge electrode 152a is for generating positive ions by generating discharge, and is connected to the cathode of the first diode 151a. The second discharge electrode 152b is an electrode for generating discharge, and is connected to the anode of the second diode 151b. Each of the first discharge electrode 152a and the second discharge electrode 152b has a needle-like shape with one end processed into a sharp shape, and is a pin-type component that can be mounted on the high-voltage side circuit board 130 ( 7 and FIG. 8).

  The first induction electrode 153 a is arranged in the vicinity of the first discharge electrode 152 a to induce the discharge at the first discharge electrode 152 a and is connected to the land 132. The second induction electrode 153b is arranged in the vicinity of the second discharge electrode 152b to induce the second discharge electrode 152b to generate a discharge, and is connected to the land 134. Each of the first induction electrode 153a and the second induction electrode 153b is configured by a conductive pattern (see FIG. 7 and the like) formed on the surface of the high-voltage side circuit board 130.

  On the other hand, of the lands 211 to 214 provided on the low voltage side circuit board 210 of the drive unit 200, the land 211 as the second land is a power output terminal, the land 212 is a third ground terminal, Reference numeral 213 denotes a signal output terminal, and the land 214 is a fourth ground terminal.

  The power supply circuit provided on the low voltage side circuit board 210 adjusts the DC power supply voltage input from the external DC power supply via the connector 220 described above to generate a predetermined drive voltage, and via the land 211, Furthermore, this is supplied to the ion generating element 100 by way of the connection member 300 and the land 131.

  The step-up transformer drive circuit provided on the low-voltage side circuit board 210 generates a signal for controlling the on / off operation of the transistor 162, passes through the land 213, and further passes through the connection member 300 and the land 133. This is derived to the ion generating element 100.

  The low-voltage circuit board 210 is provided with a ground pattern that is held at the ground potential, and is connected to the lands 212 and 214. The lands 212 and 214 are connected to lands 132 and 134 provided in the ion generating element 100 via connection members 300, respectively.

  In the present embodiment, with the above circuit configuration, the capacitor 161 is repeatedly charged and discharged. By switching on / off operation of the transistor 162 in synchronization with this, the primary of the step-up transformer 140 is changed. An impulse voltage is generated in the winding 141. Accordingly, positive and negative high voltage pulses are alternately generated in the secondary winding 142 of the step-up transformer 140, and the generated positive high voltage pulse is transmitted through the first diode 151a to the first discharge electrode 152a. The negative high voltage pulse is applied to the second discharge electrode 152b through the second diode 151b. Thereby, corona discharge is generated at the tips of the first discharge electrode 152a and the second discharge electrode 152b, and positive ions and negative ions are generated, respectively.

  3 and 4 are schematic perspective views of the ion generating element shown in FIG. 1 as viewed obliquely from above and obliquely below, respectively. FIGS. 5 and 6 are a top view and a bottom view of the ion generating element shown in FIG. It is. FIGS. 7 and 8 are schematic perspective views of the high-voltage circuit board after mounting the components incorporated in the ion generating element shown in FIG. 1 as viewed obliquely from above and obliquely below. Further, FIG. 9 is an exploded perspective view of the ion generating element shown in FIG. Next, a specific structure of the above-described ion generating element 100 will be described with reference to FIGS.

  As shown in FIGS. 3 to 6, a casing 101 which is an outer shell of the ion generating element 100 includes a box-shaped upper case 110 having a lower surface opening and a box-shaped lower case 120 having an upper surface opening. By combining the upper case 110 and the lower case 120, a space for accommodating the high-voltage circuit board 130 is provided inside. Both the upper case 110 and the lower case 120 are made of resin members.

  As shown in FIG. 7, on the upper surface which is one main surface of the high voltage side circuit board 130 having a substantially rectangular shape in plan view, a first discharge electrode 152a, a second discharge electrode 152b, a first induction electrode 153a, The second induction electrode 153b and the step-up transformer 140 are mounted, and lands 131 to 134 are provided on the upper surface. In addition, a part of the first diode 151a and the second diode 151b reaches the portion on the upper surface side of the high-voltage side circuit board 130.

  The step-up transformer 140 is disposed at the center of the high-voltage circuit board 130 in the predetermined direction (here, the longitudinal direction) so that the axial direction thereof is orthogonal to the predetermined direction.

  The first discharge electrode 152a is disposed in the vicinity of one corner located on the one end side in the predetermined direction of the high-voltage side circuit board 130, and the second discharge electrode 152b is disposed on the high-voltage side circuit board 130. It is arranged near one corner located on the other end side in the predetermined direction. The first discharge electrode 152a and the second discharge electrode 152b have their root portions at the high voltage side circuit board so that the sharpened tip portions are arranged on the upper surface side of the high voltage side circuit board 130. The high voltage side circuit board 130 is fixed to the high voltage side circuit board 130 in a state of penetrating the 130.

  The first induction electrode 153a is disposed at the approximate center on the one end side in the predetermined direction of the high-voltage side circuit board 130 so as to be positioned in the vicinity of the first discharge electrode 152a, and the second induction electrode 153b is The high-voltage circuit board 130 is disposed at the approximate center on the other end side in the predetermined direction so as to be positioned in the vicinity of the second discharge electrode 152b.

  On the other hand, the lands 131 to 133 are arranged in the vicinity of the other corner located on one end side in the predetermined direction of the high-voltage side circuit board 130, and the lands 134 are in the predetermined direction of the high-voltage side circuit board 130. It is arrange | positioned in the other corner | angular part position located in the other end part side.

  As shown in FIG. 8, a first diode 151 a, a second diode 151 b, a capacitor 161, and a transistor 162 are formed on the lower surface, which is the other main surface of the high-voltage side circuit board 130 having a substantially rectangular shape in plan view. Has been implemented. Further, the root portions of the first discharge electrode 152a and the second discharge electrode 152b described above are located on the lower surface of the high-voltage circuit board 130.

  The first diode 151 a is disposed at a position between the one end portion and the central portion in the predetermined direction of the high voltage side circuit board 130 and fits into a notch provided in the high voltage side circuit board 130. It is provided as follows. The second diode 151b is disposed at a position between the other end portion and the central portion in the predetermined direction of the high voltage side circuit board 130, and fits into a notch provided in the high voltage side circuit board 130. Is provided.

  The transistor 162 is disposed in the vicinity of the other corner located on the one end side of the high voltage side circuit board 130 in the predetermined direction, and the capacitor 161 is the other end of the high voltage side circuit board 130 in the predetermined direction. It is arranged near the other corner located on the side.

  As shown in FIG. 7 and FIG. 8, in addition to the notches for accommodating the first diode 151a and the second diode 151b described above, a slit shape is further provided at a predetermined position of the high-voltage side circuit board 130. A large number of notches extending in the direction are formed. These notches improve the circulation of the liquid resin that becomes the resin sealing portion 170 in the casing 101 when forming a resin sealing portion 170 (see FIGS. 4, 6, and 11) described later. belongs to.

  As shown in FIGS. 3 and 5, a convex step-up transformer accommodating portion 111 that covers and can accommodate the step-up transformer 140 is provided at a position corresponding to the step-up transformer 140 of the upper case 110. In addition, at the positions corresponding to the first diode 151a and the second diode 151b of the upper case 110, convex diode housing portions 112a and 112b that cover the first diode 151a and the second diode 151b, respectively, and can accommodate them. Is provided.

  Further, the discharge electrode accommodating hole 113a is arranged so that the first discharge electrode 152a and the second discharge electrode 152b can be inserted and disposed at positions corresponding to the first discharge electrode 152a and the second discharge electrode 152b of the upper case 110, respectively. 113b are provided. Further, window portions 114a for exposing the lands 131 to 134 are provided at positions corresponding to the lands 131 to 133 of the upper case 110, and the lands 134 are exposed at positions corresponding to the lands 134 of the upper case 110. A window 114b is provided.

  In addition, support frame portions 115a and 115b are provided at positions adjacent to the window portions 114a and 114b of the upper case 110 and where the drive unit 200 described above is disposed. The support frame portions 115a and 115b are not only portions where the end portions of the low voltage side circuit board 210 of the drive unit 200 are placed, but also portions where the end portions of the high voltage side circuit substrate 130 are also placed. is there.

  As shown in FIGS. 4 and 6, a substantially central portion of the lower case 120 is provided with an injection hole 121 used when injecting a liquid resin to be the resin sealing portion 170 into the casing 101. ing. In addition, diode housing holes 122a and 122b that can accommodate the ends of the first diode 151a and the second diode 151b are provided at positions corresponding to the first diode 151a and the second diode 151b of the lower case 120, respectively. ing. Furthermore, a capacitor accommodation hole 123 that can accommodate the end of the capacitor 161 is provided at a position corresponding to the capacitor 161 of the lower case 120.

  As shown in FIG. 9, when assembling the ion generating element 100, first, the upper case 110 is assembled to the high-voltage side circuit board 130 after various components are mounted, and then the upper case 110 is mounted. The lower case 120 is assembled. At this time, the end portion of the high-voltage side circuit board 130 is placed on the support frame portions 115 a and 115 b of the upper case 110.

  Next, a gap between the discharge electrode housing hole 113a and the first discharge electrode 152a inserted therethrough, a gap between the discharge electrode housing hole 113b and the second discharge electrode 152b inserted therethrough, and The sealing portion 180 (see FIG. 11) is formed by applying and curing a liquid sealing agent on these portions so as to close the gap between the window portions 114a and 114b and the high voltage side circuit board 130. By forming the seal portion 180, it is possible to prevent the liquid resin from leaking from these gaps when the liquid resin to be described later is injected.

  Subsequently, the resin sealing portion 170 is formed by injecting a liquid resin into the casing 101 through the injection hole 121 and curing the resin. The material of the resin sealing portion 170 is not particularly limited, but an epoxy resin can be preferably used.

  By filling the space inside the casing 101 using the resin sealing portion 170, the step-up transformer 140 (particularly the secondary winding 142 portion) as a high-voltage component, the first diode 151a, the second diode 151b, It becomes possible to insulate and seal the root portion of the first discharge electrode 152a and the root portion of the second discharge electrode 152b, and in addition to this, components such as the capacitor 161 and the transistor 162, which are not high-voltage components, and the high-voltage side circuit Most of the substrate 130 can be insulated and sealed. For this reason, these components can be placed close to each other while being insulated, and reliability such as moisture absorption resistance is improved.

  3 to 6, the ion generating element 100 as shown in FIG. 3 is manufactured. In the ion generating element 100, the distal end portion of the first discharge electrode 152a, the distal end portion of the second discharge electrode 152b, The lands 131 to 134 are exposed from the upper case 110, and the injection hole 121, the diode housing holes 122 a and 122 b and the capacitor housing hole 123 provided in the lower case 120 are sealed by the resin sealing portion 170. By doing so, the tip portion of the first discharge electrode 152a, the tip portion of the second discharge electrode 152b, and the portions excluding the lands 131 to 134 are all covered with the casing 101 and the resin sealing portion 170.

  10 and 11 are a top view and a schematic cross-sectional view showing the structure of the connecting portion between the ion generating element and the drive unit of the ion generator shown in FIG. Next, referring to FIG. 10 and FIG. 11, the structure of the connecting portion between the ion generating element 100 and the drive unit 200 of the ion generator 1 in the present embodiment will be described in detail. 10 and 11, the connection member 300 (see FIG. 1) is not shown. Further, FIG. 11 shows a cross section when the ion generator 1 is cut along the line XI-XI shown in FIG. 10 (that is, a cross section crossing the land 131 and the land 211), but along the same direction. Even when the lands 132 to 134 and the lands 212 to 214 are cut across the land, the same cross-sectional shape is obtained.

  As shown in FIG. 10, the physical connection between the ion generating element 100 and the drive unit 200 is such that the protrusions 215a, 215b is placed on the support frame portions 115a and 115b, which are a part of the ion generating element 100, along the thickness direction of the high-voltage circuit board 130. This is performed by fixing the generating element 100 and the driving unit 200.

  With this configuration, the lands 131 to 134 provided on the high voltage side circuit board 130 and the lands 211 to 214 provided on the low voltage side circuit board 210 are respectively connected to the ion generating element 100 and the drive unit 200. Are arranged close to each other along the direction in which they are arranged, and electrical connection between the lands 131 to 134 and the lands 211 to 214 via the respective connection members 300 becomes possible.

  As shown in FIG. 11, in a state where the ion generating element 100 and the drive unit 200 are connected, the end face of the high-voltage side circuit board 130 and the end face of the low-voltage side circuit board 210 on the support frame portions 115a and 115b. Are in a state of being opposed to each other. Here, a seal portion 180 is applied and formed on the end surface of the high-voltage circuit board 130, thereby preventing leakage of the resin sealing portion 170 filled in the casing 101.

  As shown in FIG. 11, the high voltage side circuit board 130 is composed of a printed wiring board thicker than the low voltage side circuit board 210 from the viewpoint of withstand voltage. A support frame portion 115a on which the end of the high-voltage circuit board 130 and the end of the low-voltage circuit board 210 are placed so that the upper surface of the circuit board 210 is positioned on the same plane. It is preferable to provide a stepped portion as shown in the upper surface of 115b.

  By configuring as described above, the connection between the ion generating element 100 and the driving unit 200 can be realized in a state where the low voltage side circuit board 210 of the driving unit 200 is overlapped with a part of the ion generating element 100. Therefore, the length dimension of the ion generator 1 can be reduced by the distance D (see FIG. 11) of the portion where the low voltage side circuit board 210 and the support frame portions 115a and 115b overlap, and accordingly. The ion generator 1 can be downsized, and the occupied volume can be reduced.

  Therefore, by using the ion generator 1 in the present embodiment, it is possible to obtain an ion generator that is reduced in size as compared with the prior art, and further, an ion in which the ion generator 1 is incorporated. By using the generator, the ion generator can be miniaturized.

  Here, the ion generator is configured by combining at least an ion generator and a blower that generates an air flow for sending ions generated in the ion generator. By mixing ions and negative ions at high density, decomposition of viruses, fungi, etc., inactivation of various allergens, removal of odors, static elimination, etc. are performed. Accordingly, the ion generator includes various devices such as an air purifier, an air conditioner, and a beauty / health device.

  FIG. 11 is a schematic cross-sectional view illustrating a structure of a connection portion between an ion generating element and a drive unit of an ion generator according to a modification. Next, with reference to FIG. 11, the structure of the connection part between the ion generating element 100 and the drive unit 200 of the ion generator 1 according to the modification will be described.

  As shown in FIG. 11, the ion generator 1 according to this modification has an end of the high-voltage circuit board 130 on the upper surface of the support frame portions 115a and 115b of the upper case 110 when compared with the above-described embodiment. This is different in that a groove 116 is provided along the portion. In the groove 116, the liquid sealant applied to the end face of the high voltage side circuit board 130 and the upper surfaces of the support frame parts 115a and 115b when the seal part 180 is formed is placed on the low voltage side circuit board 210. This is to prevent the portions of the support frame portions 115a and 115b from protruding to the surface.

  As described above, by providing the groove portions 116 in the support frame portions 115a and 115b, not only the above-described effect of downsizing can be obtained, but also the liquid sealant is blocked by the walls of the groove portions 116 and fits in the groove portions 116. In other words, when the ion generating element 100 and the drive unit 200 are physically connected, the low voltage side circuit board 210 is placed on the surface of the support frame portions 115a and 115b where the low voltage side circuit board 210 is placed. Can be surely positioned and fixed, and in the electrical connection using the connecting member 300 between the lands 131 to 134 and the lands 211 to 214, it is possible that a connection failure occurs in these. It can be prevented.

  In the above-described embodiment of the present invention and the modifications thereof, the ion generator and the ion generator provided with the ion generator have been described as examples that generate both positive ions and negative ions. However, as a matter of course, the present invention can also be applied to an ion generator that generates only one of positive ions and negative ions and an ion generator that includes the ion generator.

  Thus, the above-described embodiment disclosed herein is illustrative in all respects and is not restrictive. The technical scope of the present invention is defined by the terms of the claims, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

  DESCRIPTION OF SYMBOLS 1 Ion generator, 100 ion generating element, 101 casing, 110 upper case, 111 step-up transformer accommodating part, 112a, 112b diode accommodating part, 113a, 113b discharge electrode accommodating hole part, 114a, 114b window part, 115a, 115b support frame Part, 116 groove part, 120 lower case, 121 injection hole part, 122a, 122b diode accommodation hole part, 123 capacitor accommodation hole part, 130 high voltage side circuit board, 131-134 land, 140 step-up transformer, 141 primary winding, 142 Secondary winding, 151a First diode, 151b Second diode, 152a First discharge electrode, 152b Second discharge electrode, 153a First induction electrode, 153b Second induction electrode, 161 capacitor, 162 transistor, 170 Resin sealing Part, 180 Seal part, 200 drive unit, 210 low voltage side circuit board, 211-214 land, 215a, 215b protrusion, 220 connector, 300 connecting member.

Claims (6)

An ion generating element including a discharge electrode for generating ions by discharge;
A drive unit including a power supply circuit for driving the ion generating element,
The ion generating element is provided on the high-voltage side circuit board on which the discharge electrode is provided, and on the high-voltage side circuit board, and boosts the drive voltage supplied from the drive unit and applies it to the discharge electrode. A transformer, a first land provided on the high-voltage circuit board, and electrically connected to the step-up transformer; and a casing for housing the high-voltage circuit board,
The drive unit further includes a low voltage side circuit board provided with the power supply circuit, and a second land provided on the low voltage side circuit board and electrically connected to the power supply circuit,
The casing has a window portion that exposes the high-voltage side circuit board in a portion where the first land is provided,
The portion of the low voltage side circuit board in which the second land is provided is overlaid on the ion generating element along the thickness direction of the high voltage side circuit board. In this state, the first land and the An ion generator that is electrically connected to the second land. The casing further includes a support frame portion provided adjacent to the window portion,
The portion of the low voltage side circuit board on which the second land is provided is placed on the support frame, and in this state, the first land and the second land are connected via a connecting member. The ion generator according to claim 1, which is electrically connected. The ion generating element includes a resin sealing portion that insulates and seals the step-up transformer by injecting a liquid resin into the casing and is cured, and the support frame to prevent the liquid resin from leaking out. A seal part formed by applying and curing a liquid sealant so as to close a gap between the part and the high voltage side circuit board,
The ion generator according to claim 2, wherein a groove portion that prevents the liquid sealant from protruding is provided in the support frame portion along an end portion of the high-voltage side circuit board. The ion generating element includes a rectifying element that is provided on the high-voltage circuit board and is electrically connected to the step-up transformer and the discharge electrode.
The ion generator according to claim 3, wherein the rectifying element is sealed by the resin sealing portion. The discharge electrode has a needle-like positive electrode for generating positive ions and a needle-like negative electrode for generating negative ions,
The positive electrode is disposed on one end side in a predetermined direction of the high-voltage circuit board as viewed from the step-up transformer,
5. The ion generator according to claim 1, wherein the negative electrode is disposed on the other end side in the predetermined direction of the high-voltage circuit board as viewed from the step-up transformer. An ion generator according to any one of claims 1 to 5;
An ion generator comprising: a blower that generates an air flow for sending out ions generated by the discharge electrode.

Images