JP2023056246A - Discharge device and electric equipment - Google Patents

Abstract

To provide a discharge device and electric equipment which comprise discharge electrodes and protect the discharge electrodes by suppressing ingress of an object from a specific direction.SOLUTION: A discharge device 1 includes an enclosure 11, discharge electrodes 30a, 30b, and electrode protection portions 40a, 50a, 40b, 50b. The enclosure 11 has an opening portion 12 with one surface open. The discharge electrodes 30a and 30b protrude from the opening portion 12. A pair of electrode protection portions 40a, 50a oppose each other across the discharge electrode 30a. The facing distance differs between one end and the other end. The other pair of electrode protection portions 40b, 50b oppose each other across the discharge electrode 30b. The facing distance differs between the one end and the other end.SELECTED DRAWING: Figure 1

Description

The present invention relates to a discharge device and electrical equipment.

In recent years, electric appliances such as air purifiers, air conditioners, blowers, refrigerators, and vacuum cleaners have come to be equipped with discharge devices that generate ions, electrons, radicals, ozone, active species, and the like.

Patent Literature 1 discloses a discharge device including a housing, a discharge electrode having a tip portion protruding outside the housing, and an electrode protection portion for protecting the tip portion of the discharge electrode. The electrode protection part prevents the discharge electrode from coming into contact with the work table when the discharge device is attached to an air purifier, etc. was prevented from doing so.

WO2018/055783

In Patent Document 1, it is not assumed that the end user will replace the discharge device with a new discharge device and clean the discharge device after the discharge device is attached to an air cleaner or the like in the manufacturing stage. In the manufacturing stage, it is possible to have the worker perform the installation work of the discharge device according to a predetermined procedure so as not to damage the discharge electrode. On the other hand, it is difficult to make end users follow predetermined procedures. Therefore, when it is assumed that an end user touches the discharge device, a structure for protecting the discharge electrode is required so that the discharge electrode is not damaged by touching the discharge electrode with a finger or the like. However, Patent Literature 1 does not assume a structure capable of protecting the discharge electrode during work by the end user.

SUMMARY OF THE INVENTION An object of the present invention is to provide a discharge device and an electric device that protect a discharge electrode by preventing objects from entering from a specific direction.

A discharge device according to the present invention includes a housing having an opening with one side open, and a discharge electrode protruding from the opening facing each other with the discharge electrode interposed therebetween. and a different pair of electrode protectors.

An electrical device according to the present invention includes a discharge device and a blower that blows air into an air passage including a space in which the discharge electrodes of the discharge device are arranged.

Advantageous Effects of Invention According to the present invention, it is possible to provide a discharge device and an electric device that protect a discharge electrode by suppressing an object from entering from a specific direction.

1 is a perspective view of a discharge device according to Embodiment 1. FIG. 1 is a plan view of a discharge device according to Embodiment 1. FIG. 1 is a side view of a discharge device according to Embodiment 1. FIG. 4 is a plan view showing a pair of electrode protection parts in Embodiment 1. FIG. FIG. 8 is a plan view of a discharge device according to Embodiment 2; FIG. 8 is a plan view of a discharge device according to Embodiment 3; FIG. 11 is a vertical cross-sectional view of an air cleaner according to Embodiment 4;

An embodiment of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and description thereof will not be repeated.

<Embodiment 1>
A discharge device 1 according to Embodiment 1 will be described with reference to FIGS. 1 to 3. FIG. 1 is a perspective view of a discharge device 1, FIG. 2 is a plan view of the same, and FIG. 3 is a side view of the same. FIG. 4 is a plan view showing a pair of electrode protection portions 40a and 50a according to the first embodiment.

The discharge device 1 includes a housing 11, discharge electrodes 30a and 30b, and electrode protection portions 40a, 40b, 50a and 50b. The discharge device 1 is, for example, an ion generator in which the discharge electrode 30a generates positive ions and the discharge electrode 30b generates negative ions.

The housing 11 has a substantially flat box shape and has a bottom surface and four side surfaces 13 to 16 surrounding the bottom surface. One surface facing the bottom surface is an opening 12 . The housing 11 is made of, for example, insulating resin. The inside of the housing 11 is filled with an insulating resin while a step-up transformer (not shown), a dielectric electrode, a circuit board, etc. (hereinafter referred to as "substrate, etc.") are arranged. The insulating resin filled in the housing 11 seals the opening 12 . The insulating resin that fills the housing 11 and seals the opening 12 is referred to as a sealing portion 20 .

The discharge electrodes 30a and 30b are electrically connected to the above-described substrate or the like (not shown). The arrangement direction D1 of the discharge electrode 30a and the discharge electrode 30b is indicated by an arrow in FIG. 1 and the like. The tip portions of the discharge electrodes 30 a and 30 b protrude from the surface of the sealing portion 20 that seals the opening 12 . The projecting direction D3 of the discharge electrodes 30a and 30b is indicated by arrows in FIG. 1 and the like.

The discharge electrodes 30a and 30b are made of a conductive material such as metal, carbon fiber, conductive fiber, and conductive resin. The discharge electrodes 30a and 30b of Embodiment 1 are brush-like discharge electrodes formed by bundling a plurality of linear conductors into a brush-like shape. The shape of the discharge electrodes 30a and 30b is not limited to the brush shape, and may be any shape such as a rod shape, a needle shape, a line shape, a fibrous shape, and a planar shape.

A connector portion 21 is provided near the bottom surface of the side surface 14 . A terminal 22 is arranged in the connector portion 21 . One end of the terminal 22 is electrically connected to the board or the like (not shown) described above. The other end of terminal 22 is electrically connected to an external power supply. A voltage from an external power supply is stepped up by a substrate (not shown) or the like and applied to the discharge electrodes 30a and 30b. By applying a voltage, the discharge electrode 30a generates positive ions and the discharge electrode 30b generates negative ions. The external power supply is, for example, power supplied to the discharge device 1 by an electrical device. The electric device is, for example, an air purifier 100 shown in FIG. 7, which will be described later.

The tip portions of the discharge electrodes 30 a and 30 b protrude outside from the sealing portion 20 of the housing 11 . Therefore, if the discharge device 1 falls over on a workbench or the like during the manufacturing stage of the electric device, before the discharge device 1 is attached to the electric device, the discharge electrodes 30a and 30b come into contact with the workbench and deform. Or it may be damaged. Moreover, the discharge electrodes 30a and 30b may come into contact with surrounding objects or the fingers of the operator during the installation work, and the discharge electrodes 30a and 30b may be deformed or damaged. Furthermore, when the end user replaces the discharge device 1 attached to the electrical equipment with a new discharge device 1, or removes and cleans the discharge device 1 attached to the electrical equipment, the discharge electrode 30a, There is also a possibility that the discharge electrodes 30a, 30b may be deformed or damaged due to the contact of the 30b with a surrounding object or the end user's finger. End users are less accustomed to handling the discharge device 1 than operators, and therefore need to protect the discharge electrodes 30a and 30b more reliably.

Therefore, in Embodiment 1, the discharge device 1 is provided with a pair of electrode protection portions 40a and 50a for protecting the discharge electrode 30a and a pair of electrode protection portions 40b and 50b for protecting the discharge electrode 30b. ing.

The pair of electrode protection portions 40a and 50a are arranged line-symmetrically with a gap therebetween in the lateral direction of the housing 11 (that is, the air flow direction D2 described later) so as to sandwich the discharge electrode 30a. Similarly, the pair of electrode protection portions 40b and 50b are opposed to each other with a gap therebetween in the lateral direction of the housing 11 so as to sandwich the discharge electrode 30b. In addition, the electrode protection portion 40a and the electrode protection portion 40b are arranged line-symmetrically with a space therebetween in the longitudinal direction of the housing 11 (that is, the arrangement direction D1). Similarly, the electrode protection portion 50a and the electrode protection portion 50b are arranged line-symmetrically with a space therebetween in the longitudinal direction of the housing 11 .

The electrode protection portion 40a has column portions 41a and 42a and a protection piece 43a. The column portion 41 a is provided on the side surface 13 of the four side surfaces 13 to 16 that constitute the housing 11 . The column portion 42 a is provided on the side surface 15 different from the side surface 13 . The side surface 13 is a side surface in the lateral direction (that is, an air flow direction D2 to be described later), and the side surface 15 is a side surface in the longitudinal direction (that is, the arrangement direction D1). there is Moreover, the thickness T41a of the column portion 41a is thicker than the thickness T13 of the side surface 13 . Similarly, the thickness T42a of the column portion 42a is thicker than the thickness T15 of the side surface 15. As shown in FIG.

The protective piece 43a is supported by the column portion 41a and the column portion 42a. The protection piece 43a is supported at a position higher than the discharge electrode 30a in the projecting direction D3. Moreover, the protective piece 43a has a U shape when viewed from the projecting direction D3. Both ends of the U-shape correspond to the outer projecting portion 44a and the inner projecting portion 45a. In the arrangement direction D<b>1 , the outer protruding part 44 a is arranged on the outer side near the side surface 13 , and the inner protruding part 45 a is arranged on the inner side farther from the side surface 13 .

The electrode protection portion 50a has column portions 51a and 52a and a protection piece 53a. The column portion 51 a is provided on the side surface 13 . The column portion 52 a is provided on the side surface 16 orthogonal to the side surface 13 . Further, the thickness T51a of the column portion 51a is thicker than the thickness T13 of the side surface 13, and the thickness T52a of the column portion 52a is thicker than the thickness T16 of the side surface 16.

The protective piece 53a is supported by the column portion 51a and the column portion 52a. The protection piece 53a is supported at a position higher than the discharge electrode 30a in the projecting direction D3. Moreover, the protection piece 53a has a U shape when viewed from the projecting direction D3. Both ends of the U-shape correspond to the outer protruding portion 54a and the inner protruding portion 55a. In the arrangement direction D<b>1 , the outer protruding portion 54 a is arranged on the outer side near the side surface 13 , and the inner protruding portion 55 a is arranged on the inner side farther from the side surface 13 .

In the electrode protection portion 40a, openings surrounded by the side surfaces 13 and 15, the pillars 41a and 42a, and the protection piece 43a are openings for passing air. Similarly, in the electrode protection portion 50a, opening portions surrounded by the side surfaces 13 and 16, the column portions 51a and 52a, and the protection piece 53a are also openings for passing air. These openings are intended to prevent the electrode protection portions 40a and 50a from becoming walls and impeding the flow of air when the discharge device 1 is mounted on an electrical device. With these openings, the positive ions generated by the discharge of the discharge electrode 30a can be transported along with the air flow. The airflow direction D2 is indicated by an arrow in FIG. 1 and the like.

Moreover, if there is a structure around the discharge electrode 30a, it may adversely affect the discharge performance of the discharge electrode 30a. The member that protects the discharge electrode 30a does not have a structure that surrounds the discharge electrode 30a in one piece, but is divided into the electrode protection portion 40a and the electrode protection portion 50a. Adverse impact on performance can be reduced.

In addition, in the air flow direction D2, the distance from the discharge electrode 30a to the protective piece 43a and the distance from the discharge electrode 30a to the protective piece 53a are larger than the distances shown in FIG. 6 of Embodiment 3, which will be described later. . Therefore, it is possible to further reduce the adverse effect of the protection pieces 43a and 53a on the discharge performance of the discharge electrode 30a.

Further, by dividing the electrode protection portion 40a and the electrode protection portion 50a, a cleaning member (not shown) can be moved in the arrangement direction D1. Therefore, it is possible to easily clean the discharge electrode 30a.

The configuration of the pair of electrode protection portions 40b, 50b for protecting the discharge electrode 30b is the same as the configuration of the pair of electrode protection portions 40a, 40b for protecting the discharge electrode 30a. Therefore, the description is omitted.

Since the pair of electrode protection portions 40a and 50a protects the discharge electrode 30a and the pair of electrode protection portions 40b and 50b protects the discharge electrode 30b, even if the discharge device 1 falls over on a workbench or the like, It is possible to prevent the discharge electrodes 30a and 30b from coming into contact with a workbench or the like. In addition, it is possible to prevent the discharge electrodes 30a and 30b from coming into contact with surrounding objects unless it is intentional.

The facing distance between the pair of electrode protection portions 40a and 50a is, compared to one end side (pillar portion 41a and 51a side) closer to the side surface 13 on the edge portion side among the four side surfaces 13 to 16 constituting the housing 11, The other end side (pillar part 42a, 52a side) far from the side surface 13 is larger. That is, the distance between the inner protrusions 45a far from the side surface 13 and the inner protrusions 55a is greater than the distance between the outer protrusions 44a and 54a that are closer to the side surface 13 . Similarly, the facing distance between the pair of electrode protection portions 40b and 50b is set to one end (the side of the pillars 41b and 51b) near the side surface 14 on the edge side of the four side surfaces 13 to 16 constituting the housing 11. In comparison, the other end side (the side of the pillars 42b and 52b) farther from the side surface 14 is larger. That is, the distance between the inner protrusions 45b and 55b farther from the side surface 14 is greater than the distance between the outer protrusions 44b and 54b that are closer to the side surface 14 . Therefore, when the operator and the end user work from the sides 13 and 14, fingers or the like can be prevented from touching the discharge electrodes 30a and 30b unless intentional. In other words, the pair of electrode protection portions 40a and 50a prevents an object, such as a finger, from entering from the side surface 13 to the side surface 14 (specific direction). Similarly, the pair of electrode protection portions 40b and 50b prevent an object such as a finger from entering from the side 14 to the side 13 (specific direction).

Protective pieces 43a and 43b protect the side surfaces 15 of the discharge electrodes 30a and 30b, and protective pieces 53a and 53b protect the side surfaces 16 of the discharge electrodes 30a and 30b. Therefore, when the operator and the end user work from the opposing side surfaces 15 and 16, fingers or the like can be prevented from coming into contact with the discharge electrodes 30a and 30b unless intentional.

As described above, when the discharge device 1 is attached to an electric device, even if the operator or the end user works from any of the side surfaces 13 to 16, the electrode protection portions 40a, 40b, 50a, and 50b protect the discharge electrode 30a. , 30b can be prevented from being touched by a finger or the like. Therefore, it is easy to attach and detach the discharge device 1 to and from the electrical equipment. In Embodiment 1, the connector portion 21 is provided on the side surface 14 in the arrangement direction D1. Therefore, for example, the operator and the end user attach and detach the discharge device 1 by applying force from the sides 13 and 14 to slide the connector portion 21 in the arrangement direction D1.

Moreover, it is provided on two side surfaces 13 and 15 different from one column portion 41a and the other column portion 42a of the electrode protection portion 40a. Similarly, one column portion 51 a and the other column portion 52 a of the electrode protection portion 50 a are provided on two different side surfaces 13 and 16 . Therefore, the pair of electrode protection portions 40a and 50a are less likely to be deformed by both the force applied in the lateral direction (ie, the air flow direction D2) and the force applied in the longitudinal direction (ie, the arrangement direction D1). Therefore, the discharge electrode 30a is protected more reliably.

One column portion 41 b and the other column portion 42 b of the electrode protection portion 40 b are provided on two different side surfaces 14 and 15 . Similarly, the one column portion 51b and the other column portion 52b of the electrode protection portion 50b are provided on two different side surfaces 14 and 16, respectively. Therefore, the pair of electrode protection portions 40b and 50b is also less likely to deform against both the force applied in the lateral direction and the force applied in the longitudinal direction. Therefore, the discharge electrode 30b is protected more reliably.

In addition, since the thickness of each pillar is thicker than the thickness of the side surface on which the pillar is formed, compared to the case where the pillar is formed by extending the side as it is and forming the pillar with the same thickness as the side, the electrode protection portion 40a, The strength of 40b, 50a, 50b increases.

As described above with reference to FIGS. 1 to 4, the discharge device 1 according to the first embodiment includes the housing 11, the discharge electrodes 30a and 30b, and the electrode protection portions 40a, 50a, 40b and 50b. Prepare. The housing 11 has an opening 12 with one side open. Discharge electrodes 30 a and 30 b protrude from opening 12 . The pair of electrode protection portions 40a and 50a face each other with the discharge electrode 30a interposed therebetween, and the facing distance differs between one end side and the other end side. The pair of electrode protection portions 40b and 50b also face each other with the discharge electrode 30b interposed therebetween, and the facing distance differs between the one end side and the other end side. Objects can be prevented from entering from a specific direction by making the facing distance on the side expected to be touched by workers and end users smaller than the facing distance on the side expected not to be touched. As a result, the discharge device 1 that protects the discharge electrodes 30a and 30b can be provided.

<Embodiment 2>
FIG. 5 is a plan view of the discharge device 1 according to Embodiment 2. FIG. In FIG. 5, the same or corresponding parts as those in FIGS. 1 to 4 are denoted by the same reference numerals, and description thereof will not be repeated.

In the discharge device 1 according to Embodiment 2 shown in FIG. 5, the protective piece 43a-1 has an L shape when viewed from the projecting direction D3 of the discharge electrodes 30a and 30b (see FIG. 1, etc.). The protective piece 43a in Embodiment 1 has a U-shape by having the outer protruding portion 44a and the inner protruding portion 45a, whereas the protective piece 43a-1 in the second embodiment has only the outer protruding portion 44a. , and has an L-shape due to the absence of the inner protrusion 45a. The electrode protection portions 40b, 50a and 50b also have L-shaped protection pieces 43b-1, 53a-1 and 53b-1 when viewed from the projecting direction D3.

As in the first embodiment, also in the second embodiment, the opposing distance between the pair of electrode protection portions 40a and 50a is set to the other end side farther from the side surface 13 (pillar portions 41a and 51a side) than the one end side closer to the side surface 13 (pillar portions 41a and 51a side). pillar part 42a, 52a side) is larger. That is, the opposing distance between the column portion 42a and the column portion 52a far from the side surface 13 is greater than the opposing distance between the outer protrusion portion 44a and the outer protrusion portion 54a that are closer to the side surface 13 .

Similarly, the facing distance between the pair of electrode protection portions 40b and 50b is set to one end (the side of the pillars 41b and 51b) near the side surface 14 on the edge side of the four side surfaces 13 to 16 constituting the housing 11. In comparison, the other end side (the side of the pillars 42b and 52b) farther from the side surface 14 is larger. That is, the opposing distance between the pillars 42b and 52b that are far from the side surface 14 is greater than the opposing distance between the outer protrusions 44b and 54b that are closer to the side surface 14 .

Therefore, when an operator and an end user work from the sides 13 and 14 with a small opposing distance, fingers or the like can be prevented from touching the discharge electrodes 30a and 30b unless intentional.

Even if the protective piece 43a-1 does not have the inner projecting portion 45a, the strength of the electrode protective portion 40a can be increased by making the thickness of the column portion 42a larger than the thickness of the side surface 15. FIG. The thickness of the pillars 42b, 52a, and 52b can also be increased by making them thicker than the thickness of the side surfaces.

<Embodiment 3>
FIG. 6 is a plan view of the discharge device 1 according to Embodiment 3. FIG. In FIG. 6, the same or corresponding parts as those in FIGS. 1 to 4 are denoted by the same reference numerals, and description thereof will not be repeated.

In the discharge device 1 according to Embodiment 3 shown in FIG. 6, the protective piece 43a-2 is positioned against the side surface 15 of the housing 11 when viewed from the projecting direction D3 of the discharge electrodes 30a and 30b (see FIG. 1, etc.). It has an inclined linear shape. The protection piece 43a-2 has one end closer to the outside of the housing 11 in the projecting direction D3 supported by the column 41a, and the other end closer to the inside of the housing 11 is supported by the column 42a. The protective piece 43b-2 also has a linear shape that is inclined with respect to the side surface 15 when viewed from the projecting direction D3. The protection pieces 53a-2 and 53b-2 have a linear shape that is inclined with respect to the side surface 16 when viewed from the projecting direction D3.

As in Embodiments 1 and 2, in Embodiment 3 as well, the corresponding distance between the pair of electrode protection portions 40a and 50a is set at the other end far from the side surface 13 compared to the one end side (pillar portion 41a and 51a side) closer to the side surface 13. The side (pillar part 42a, 52a side) is larger. Similarly, the opposing distance between the pair of electrode protection portions 40b and 50b is greater on the other end side (pillar portions 42b and 52b side) farther from the side surface 14 than on the one end side (pillar portions 41b and 51b side) closer to the side surface 14. is larger. Therefore, when an operator and an end user work from the sides 13 and 14 with a small opposing distance, fingers or the like can be prevented from touching the discharge electrodes 30a and 30b unless intentional.

Also in Embodiment 3, by making the thickness of the column portion 42a larger than the thickness of the side surface 15, the strength of the electrode protection portion 40a can be increased. The thickness of the pillars 42b, 52a, and 52b can also be increased by making them thicker than the thickness of the side surfaces.

<Embodiment 4>
In Embodiment 4, electric equipment equipped with the discharge device 1 according to Embodiments 1 to 3 will be described. FIG. 7 is a longitudinal sectional view of an air cleaner 100 according to Embodiment 4. FIG. Air cleaner 100 is an example of an electrical device. In the air cleaner 100 , a suction port 102 is provided on the lower rear surface of the main body 101 . A blowout port 103 is provided on the top surface of the main body 101, and a blowout port 104 is provided on the top front surface. Note that only one of the outlets 103 and 104 may be provided.

Inside the main body 101, an air passage 111 is provided that communicates the inlet 102 and the outlets 103 and 104 with each other. A blower fan 112 is installed near the suction port 102 of the air passage 111 . The blower fan 112 is a blower such as a cross-flow fan, and sucks outside air from the suction port 102 into the air passage 111 . In addition, the suction port 102 is closed by a filter 114 . The filter 114 removes dust and the like contained in the air sucked into the air passage 111 from the suction port 102 . A grid-shaped fan guard 115 is installed between the filter 114 and the blower fan 112 .

A mounting hole 113 is provided near the air outlet 104 of the air passage 111 . The discharge device 1 is attached to the attachment hole 113 . Discharge electrodes 30 a and 30 b and electrode protection portions 40 a , 40 b , 50 a and 50 b which are inserted into mounting holes 113 of casing 11 of discharge device 1 protrude into air passage 111 . Ions and the like generated by the discharge device 1 are emitted into the air passage 111 . The air containing ions and the like is blown out from the outlets 103 and 104 . Airflow in the air purifier 100 is indicated by arrows in FIG. The air flow indicated by arrows in FIG. 7 corresponds to the air flow direction D2 shown in FIG. 1 and the like.

Note that the discharge device 1 may be arranged at any position on the air passage 111 . In the illustrated example, it is arranged near the outlet 104 so that the end user can easily replace and clean the discharge device 1 .

The embodiments of the present invention have been described above with reference to the drawings (FIGS. 1 to 7). However, the present invention is not limited to the above-described embodiments, and can be implemented in various aspects without departing from the gist of the present invention.

For example, in the above embodiment, the discharge device 1 is configured to include two discharge electrodes 30a and 30b. good. A pair of electrode protection portions 40a and 50a for protecting the discharge electrode 30a is provided around the discharge electrode 30a. Also, in this configuration, it is assumed that the operator and the end user hold the side surface 13 opposite to the side surface 14 on which the connector portion 21 is provided, and attach/detach the discharge device 1 to/from the electrical equipment. In this assumption, the facing distance between the pair of electrode protection parts 40a and 50a is greater than the one end side (pillar parts 41a and 51a side) near the side surface 13 that is expected to be touched by the operator and the end user. The other end side far from 13 (the side of pillars 42a and 52a) is larger. Therefore, when an operator or an end user holds the side surface 13, it is possible to prevent the finger or the like from touching the discharge electrode 30a unless it is intentional.

INDUSTRIAL APPLICABILITY The discharge device according to the present invention can be applied to a discharge device that generates ions, electrons, ozone, radicals, active species, etc. by discharge. Also, the discharge device according to the present invention can be mounted in electrical equipment such as air cleaners, air conditioners, blowers, refrigerators, and vacuum cleaners.

1 discharge device 11 housing 12 openings 13 to 16 side surface 20 sealing portion 21 connector portion 22 terminals 30a, 30b discharge electrodes 40a, 40b, 50a, 50b electrode protection portions 41a, 41b, 42a, 42b, 51a, 51b, 52a , 52b Columns 43a, 43a-1, 43a-2, 43b, 43b-1, 43b-2, 53a, 53a-1, 53a-2, 53b, 53b-1, 53b-2 Protective pieces 44a, 44b, 54a , 54b outer protrusions 45a, 45b, 55a, 55b inner protrusions 100 air cleaner (electrical equipment)
101 Main body 102 Suction ports 103, 104 Air outlet 111 Air passage 112 Blower fan (blower device)
113 Mounting hole 114 Filter 115 Fan guard D1 Arrangement direction D2 Airflow direction D3 Projection direction T13, T15, T16, T41a, T42a, T51a, T52a Thickness

Claims (10)

a housing having an opening with one side open;
a discharge electrode protruding from the opening;
A discharge device, comprising: a pair of electrode protection parts facing each other with the discharge electrode interposed therebetween, and having different facing distances on one end side and the other end side. 2. The pair of electrode protection parts according to claim 1, wherein the facing distance between the pair of electrode protection parts is greater on the other end side farther from the one side than on the one end side closer to one of the four sides constituting the housing. discharge device. 3. The discharge device according to claim 1, wherein said electrode protection portion has a U-shaped protection piece when viewed from the projecting direction of said discharge electrode. 3. The discharge device according to claim 1, wherein said electrode protection portion has an L-shaped protection piece when viewed from the projecting direction of said discharge electrode. 3. The discharge device according to claim 1, wherein said electrode protection portion has a linear protection piece that is inclined with respect to a side surface of said housing when viewed from the projecting direction of said discharge electrode. 6. The protection piece according to any one of claims 3 to 5, wherein the protective piece is supported by two pillars provided on two orthogonal sides of the four sides forming the housing. discharge device. 7. The discharge device according to claim 6, wherein the thickness of said pillar is thicker than the thickness of the side surface on which said pillar is provided. The discharge device according to any one of claims 1 to 7, wherein there are two discharge electrodes, and the pair of electrode protection portions are provided for each of the discharge electrodes. 9. The discharge device according to any one of claims 1 to 8, wherein there are two discharge electrodes, and a connector portion is provided on the arrangement direction of the discharge electrodes. a discharge device according to any one of claims 1 to 9;
An electric device comprising: an air blower that blows air into an air passage including a space in which the discharge electrodes of the discharge device are arranged.

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