Discharge devices and electrical equipment

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

[Technical Field]

[0001] The present invention relates to a discharge device and an electrical device. [Background technology]

[0002] BACKGROUND ART In recent years, electrical appliances such as air purifiers, air conditioners, fans, refrigerators, and vacuum cleaners have come to be equipped with discharge devices that generate ions, electrons, radicals, ozone, active species, and the like.

[0003] Patent Document 1 discloses a discharge device that includes a housing, a discharge electrode whose tip protrudes outside the housing, and an electrode protection part for protecting the tip of the discharge electrode. The electrode protection part prevents the discharge electrode from coming into contact with the workbench if the discharge device falls over when attached to an air purifier or the like, and prevents the discharge electrode from coming into contact with surrounding objects or the worker's fingers during work. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] International Publication No. 2018 / 055783 Summary of the Invention [Problem to be solved by the invention]

[0005] Patent Document 1 does not anticipate that after the discharge device is installed in an air purifier or the like during the manufacturing stage, the end user will replace it with a new discharge device or clean the discharge device. During the manufacturing stage, it is possible to have a worker install the discharge device according to a predetermined procedure so as not to damage the discharge electrode. However, it is difficult to have the end user follow the predetermined procedure. Therefore, if it is expected that the end user will touch the discharge device, a structure is needed to protect the discharge electrode so that it will not be damaged by contact with fingers or the like. However, Patent Document 1 does not anticipate a structure that can protect the discharge electrode during end user work.

[0006] An object of the present invention is to provide a discharge device and an electrical appliance that protect a discharge electrode by preventing an object from entering from a specific direction. [Means for solving the problem]

[0007] The discharge device of the present invention comprises a housing having an opening on one side, a discharge electrode protruding from the opening, and a pair of electrode protection parts facing each other across the discharge electrode, the opposing distance being different on one end side and the other end side.

[0008] The electrical device according to the present invention includes a discharge device and an air blower that blows air into an air passage that includes a space in which the discharge electrode of the discharge device is disposed. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a discharge device and an electrical device that protect a discharge electrode by preventing an object from entering from a specific direction. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a perspective view of a discharge device according to a first embodiment. [Figure 2] 1 is a plan view of a discharge device according to a first embodiment. [Figure 3]1 is a side view of a discharge device according to a first embodiment. [Figure 4] 3 is a plan view showing a pair of electrode protection parts in the first embodiment. FIG. [Figure 5] FIG. 10 is a plan view of a discharge device according to a second embodiment. [Figure 6] FIG. 10 is a plan view of a discharge device according to a third embodiment. [Figure 7] FIG. 10 is a vertical cross-sectional view of an air purifier according to a fourth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described with reference to the accompanying drawings, in which the same or corresponding parts are designated by the same reference numerals and will not be described repeatedly.

[0012] <Embodiment 1> A discharge device 1 according to a first embodiment will be described with reference to Figures 1 to 3. Figure 1 is a perspective view of the discharge device 1, Figure 2 is a plan view thereof, and Figure 3 is a side view thereof. Figure 4 is a plan view showing a pair of electrode protection parts 40a, 50a according to the first embodiment.

[0013] The discharge device 1 includes a housing 11, discharge electrodes 30a and 30b, and electrode protectors 40a, 40b, 50a, and 50b. The discharge device 1 is, for example, an ion generating device in which the discharge electrode 30a generates positive ions and the discharge electrode 30b generates negative ions.

[0014] The housing 11 has a flat, generally box-like shape and has a bottom surface and four side surfaces 13 to 16 surrounding the bottom surface. One surface opposite the bottom surface forms an opening 12. The housing 11 is formed, for example, from an insulating resin. The interior of the housing 11 is filled with insulating resin, with a step-up transformer, a dielectric electrode, a circuit board, etc. (hereinafter referred to as "board, etc.") (not shown) arranged inside. The insulating resin filled inside the housing 11 seals the opening 12. The insulating resin filled inside the housing 11 and sealing the opening 12 is referred to as a sealing portion 20.

[0015] The discharge electrodes 30a, 30b are electrically connected to the above-mentioned substrate, etc. (not shown). The arrangement direction D1 of the discharge electrodes 30a and 30b is shown by an arrow in Figure 1, etc. The tips of the discharge electrodes 30a, 30b protrude from the surface of the sealing portion 20 that seals the opening 12. The protruding direction D3 of the discharge electrodes 30a, 30b is shown by an arrow in Figure 1, etc.

[0016] The discharge electrodes 30a, 30b are made of a conductive material such as metal, carbon fiber, conductive fiber, or conductive resin. The discharge electrodes 30a, 30b in the first embodiment are brush-shaped discharge electrodes formed by bundling a plurality of linear conductors into a brush shape. The shape of the discharge electrodes 30a, 30b is not limited to a brush shape, and may be any shape such as a rod shape, needle shape, line shape, fiber shape, or planar shape.

[0017] A connector portion 21 is provided near the bottom surface of the side surface 14. A terminal 22 is disposed on the connector portion 21. One end of the terminal 22 is electrically connected to the above-mentioned circuit board or the like (not shown). The other end of the terminal 22 is electrically connected to an external power supply. The voltage from the external power supply is boosted by the circuit board or the like (not shown) and applied to the discharge electrodes 30a, 30b. When the voltage is applied, the discharge electrode 30a generates positive ions, and the discharge electrode 30b generates negative ions. The external power supply is, for example, a power supply supplied to the discharge device 1 by an electrical appliance. The electrical appliance is, for example, an air purifier 100 shown in FIG. 7, which will be described later.

[0018] The tips of the discharge electrodes 30a, 30b protrude outward beyond 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 electrical equipment before the discharge device 1 is attached to the electrical equipment, the discharge electrodes 30a, 30b may come into contact with the workbench or the like and be deformed or damaged. Furthermore, the discharge electrodes 30a, 30b may come into contact with surrounding objects or with the fingers of an operator during the attachment work, which may result in deformation or damage. Furthermore, when an end user replaces the discharge device 1 attached to the electrical equipment with a new one, or when removing and cleaning the discharge device 1 attached to the electrical equipment, the discharge electrodes 30a, 30b may come into contact with surrounding objects or with the fingers of the end user, which may result in deformation or damage. Because end users are less familiar with handling the discharge device 1 than operators, it is necessary to more reliably protect the discharge electrodes 30a, 30b.

[0019] Therefore, in the first embodiment, the discharge device 1 is provided with a pair of electrode protection parts 40a, 50a for protecting the discharge electrode 30a, and a pair of electrode protection parts 40b, 50b for protecting the discharge electrode 30b.

[0020] The pair of electrode protection units 40a, 50a are arranged line-symmetrically with a gap between them in the short-side direction of the housing 11 (i.e., the air flow direction D2 described below) so as to sandwich the discharge electrode 30a. Similarly, the pair of electrode protection units 40b, 50b are arranged opposite each other with a gap between them in the short-side direction of the housing 11 so as to sandwich the discharge electrode 30b. Furthermore, the electrode protection units 40a and 40b are arranged line-symmetrically with a gap between them in the long-side direction of the housing 11 (i.e., the arrangement direction D1). Similarly, the electrode protection units 50a and 50b are arranged line-symmetrically with a gap between them in the long-side direction of the housing 11.

[0021] The electrode protection part 40a has pillar parts 41a, 42a, and a protection piece 43a. The pillar part 41a is provided on the side surface 13, one of the four side surfaces 13 to 16 that constitute the housing 11. The pillar part 42a is provided on the side surface 15 that is different from the side surface 13. The side surface 13 is a side surface in the short direction (i.e., the air flow direction D2 described below), and the side surface 15 is a side surface in the long direction (i.e., the arrangement direction D1), and the side surfaces 13 and 15 are orthogonal to each other. Furthermore, the thickness T41a of the pillar part 41a is thicker than the thickness T13 of the side surface 13. Similarly, the thickness T42a of the pillar part 42a is thicker than the thickness T15 of the side surface 15.

[0022] The protective piece 43a is supported by the column portion 41a and the column portion 42a. The protective piece 43a is supported at a position higher than the discharge electrode 30a in the protruding direction D3. The protective piece 43a is U-shaped when viewed from the protruding direction D3. The two tip portions of the U correspond to the outer protruding portion 44a and the inner protruding portion 45a. In the arrangement direction D1, the outer protruding portion 44a is arranged on the outer side close to the side surface 13, and the inner protruding portion 45a is arranged on the inner side far from the side surface 13.

[0023] The electrode protection part 50a has pillar parts 51a and 52a, and a protection piece 53a. The pillar part 51a is provided on the side surface 13. The pillar part 52a is provided on the side surface 16 that is perpendicular to the side surface 13. The thickness T51a of the pillar part 51a is thicker than the thickness T13 of the side surface 13, and the thickness T52a of the pillar part 52a is thicker than the thickness T16 of the side surface 16.

[0024] The protective piece 53a is supported by the column portions 51a and 52a. The protective piece 53a is supported at a position higher than the discharge electrode 30a in the protruding direction D3. The protective piece 53a is U-shaped when viewed from the protruding direction D3. The two tip portions of the U correspond to the outer protruding portion 54a and the inner protruding portion 55a. In the arrangement direction D1, the outer protruding portion 54a is arranged on the outer side close to the side surface 13, and the inner protruding portion 55a is arranged on the inner side far from the side surface 13.

[0025] In the electrode protector 40a, the openings surrounded by the side surfaces 13 and 15, the pillars 41a and 42a, and the protective piece 43a are openings for air passage. Similarly, in the electrode protector 50a, the openings surrounded by the side surfaces 13 and 16, the pillars 51a and 52a, and the protective piece 53a are also openings for air passage. These openings are intended to prevent the electrode protectors 40a and 50a from acting as walls and obstructing the flow of air when the discharge device 1 is installed in an electrical device. These openings allow positive ions generated by the discharge of the discharge electrode 30a to be carried by the air flow. The air flow direction D2 is indicated by an arrow in FIG. 1 and other figures.

[0026] Furthermore, the presence of a structure around the discharge electrode 30a may have an adverse effect on the discharge performance of the discharge electrode 30a. By dividing the member that protects the discharge electrode 30a into the electrode protection part 40a and the electrode protection part 50a rather than having a structure that continuously surrounds the discharge electrode 30a, it is possible to reduce the adverse effect that the electrode protection parts 40a, 50a have on the discharge performance of the discharge electrode 30a.

[0027] Furthermore, 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 greater than the distances shown in Fig. 6 of the third embodiment, which will be described later. Therefore, it is possible to further reduce the adverse effects of the protective pieces 43a and 53a on the discharge performance of the discharge electrode 30a.

[0028] Furthermore, by separating the electrode protection part 40a and the electrode protection part 50a, a cleaning member (not shown) can be moved in the arrangement direction D1, which makes it possible to easily clean the discharge electrode 30a.

[0029] The configuration of the pair of electrode protection parts 40b, 50b for protecting the discharge electrode 30b is similar to the configuration of the pair of electrode protection parts 40a, 40b for protecting the discharge electrode 30a, and therefore a description thereof will be omitted.

[0030] Because the discharge electrode 30a is protected by the pair of electrode protection parts 40a, 50a and the discharge electrode 30b is protected by the pair of electrode protection parts 40b, 50b, even if the discharge device 1 falls over on a workbench or the like, the discharge electrodes 30a, 30b can be prevented from coming into contact with the workbench or the like. Furthermore, unless intentional, the discharge electrodes 30a, 30b can be prevented from coming into contact with surrounding objects.

[0031] The opposing distance between the pair of electrode protection portions 40a, 50a is greater on the other end side (the side of pillars 42a, 52a) far from side surface 13 than on one end side (the side of pillars 41a, 51a) close to side surface 13 on the edge side of four side surfaces 13 to 16 constituting housing 11. That is, the opposing distance between inner protrusion 45a and inner protrusion 55a far from side surface 13 is greater than on the opposing distance between outer protrusion 44a and outer protrusion 54a close to side surface 13. Similarly, the opposing distance between the pair of electrode protection portions 40b, 50b is greater on the other end side (the side of pillars 42b, 52b) far from side surface 14 than on one end side (the side of pillars 41b, 51b) close to side surface 14 on the edge side of four side surfaces 13 to 16 constituting housing 11. That is, the opposing distance between the inner protrusions 45b and 55b, which are far from the side surface 14, is greater than the opposing distance between the outer protrusions 44b and 54b, which are close to the side surface 14. Therefore, when an operator or end user works from the side surfaces 13 and 14, it is possible to prevent fingers or the like from coming into contact with the discharge electrodes 30a and 30b unless intentionally. That is, the pair of electrode protectors 40a and 50a prevents an object such as a finger from entering from the direction from the side surface 13 toward the side surface 14 (specific direction). Similarly, the pair of electrode protectors 40b and 50b prevents an object such as a finger from entering from the direction from the side surface 14 toward the side surface 13 (specific direction).

[0032] Furthermore, protective pieces 43a and 43b protect the side surface 15 of the discharge electrodes 30a and 30b, and protective pieces 53a and 53b protect the side surface 16. Therefore, when workers and end users work from the opposing side surfaces 15 and 16, it is possible to prevent fingers and the like from coming into contact with the discharge electrodes 30a and 30b unless intentional.

[0033] In this way, when attaching the discharge device 1 to an electrical device, the electrode protection parts 40a, 40b, 50a, and 50b can prevent fingers or the like from coming into contact with the discharge electrodes 30a and 30b, regardless of which side of the sides 13 to 16 the worker or end user works from. This makes it easy to attach and detach the discharge device 1 to and from the electrical device. In the first embodiment, the connector part 21 is provided on the side 14 in the arrangement direction D1. Therefore, for example, the worker or end user can attach or detach the discharge device 1 by applying force from the side of the sides 13 and 14 to slide the connector part 21 in the arrangement direction D1.

[0034] Furthermore, one column portion 41a and the other column portion 42a of the electrode protection portion 40a are provided on two different side surfaces 13, 15. Similarly, one column portion 51a and the other column portion 52a of the electrode protection portion 50a are provided on two different side surfaces 13, 16. Therefore, the pair of electrode protection portions 40a, 50a are less likely to deform due to forces applied in both the short-side direction (i.e., the air flow direction D2) and the long-side direction (i.e., the arrangement direction D1). This more reliably protects the discharge electrode 30a.

[0035] One column portion 41b and the other column portion 42b of the electrode protection portion 40b are provided on two different side surfaces 14, 15. Similarly, one column portion 51b and the other column portion 52b of the electrode protection portion 50b are provided on two different side surfaces 14, 16. Therefore, the pair of electrode protection portions 40b, 50b are also less likely to deform due to forces applied in both the short-side direction and the long-side direction. This more reliably protects the discharge electrode 30b.

[0036] Furthermore, since the thickness of each pillar is greater than the thickness of the side surface on which the pillar is formed, the strength of the electrode protection parts 40a, 40b, 50a, 50b is increased compared to when the side surface is simply extended to form pillars of the same thickness as the side surface.

[0037] As described above with reference to FIGS. 1 to 4 , the discharge device 1 according to the first embodiment includes a housing 11, discharge electrodes 30a and 30b, and electrode protectors 40a, 50a, 40b, and 50b. The housing 11 has an opening 12 that is open on one side. The discharge electrodes 30a and 30b protrude from the opening 12. The pair of electrode protectors 40a and 50a face each other across the discharge electrode 30a, with the distance between them varying between one end and the other end. The pair of electrode protectors 40b and 50b also face each other across the discharge electrode 30b, with the distance between them varying between one end and the other end. The distance between them on the side that is expected to be touched by workers and end users is shorter than the distance between them on the side that is expected not to be touched, thereby providing a discharge device 1 that protects the discharge electrodes 30a and 30b by preventing the intrusion of objects from a specific direction.

[0038] <Embodiment 2> Fig. 5 is a plan view of a discharge device 1 according to embodiment 2. In Fig. 5, the same or corresponding parts as those in Figs. 1 to 4 are designated by the same reference numerals and description thereof will not be repeated.

[0039] In the discharge device 1 according to the second embodiment shown in Fig. 5, the protective piece 43a-1 is L-shaped when viewed from the protruding direction D3 (see Fig. 1, etc.) of the discharge electrodes 30a, 30b. The protective piece 43a in the first embodiment has an outer protruding portion 44a and an inner protruding portion 45a, making it U-shaped, whereas the protective piece 43a-1 in the second embodiment has only the outer protruding portion 44a and no inner protruding portion 45a, making it L-shaped. The electrode protective portions 40b, 50a, 50b also have protective pieces 43b-1, 53a-1, 53b-1 that are L-shaped when viewed from the protruding direction D3.

[0040] As in the first embodiment, in the second embodiment, the opposing distance between the pair of electrode protection portions 40a, 50a is greater on the other end side (the side of the pillar portions 42a, 52a) far from the side surface 13 than on the one end side (the side of the pillar portions 41a, 51a) close to the side surface 13. In other words, the opposing distance between the pillar portions 42a and 52a far from the side surface 13 is greater than the opposing distance between the outer protrusions 44a and 54a close to the side surface 13.

[0041] Similarly, the opposing distance between the pair of electrode protection parts 40b, 50b is greater on the other end side (the pillar parts 42b, 52b side) farther from side surface 14 than on one end side (the pillar parts 41b, 51b side) closer to side surface 14 on the edge side of the four side surfaces 13 to 16 that make up housing 11. In other words, the opposing distance between pillar parts 42b and 52b farther from side surface 14 is greater than the opposing distance between outer protrusions 44b and 54b close to side surface 14.

[0042] Therefore, when an operator or end user works from the side surfaces 13, 14 where the opposing distance is small, fingers or the like can be prevented from coming into contact with the discharge electrodes 30a, 30b unless the operator or end user does so intentionally.

[0043] Even if the protective piece 43a-1 does not have the inward protrusion 45a, the strength of the electrode protection part 40a can be increased by making the thickness of the pillar part 42a thicker than the thickness of the side surface 15. The strength of the pillar parts 42b, 52a, 52b can also be increased by making them thicker than the thickness of the side surface.

[0044] <Embodiment 3> Fig. 6 is a plan view of a discharge device 1 according to embodiment 3. In Fig. 6, the same or corresponding parts as those in Figs. 1 to 4 are designated by the same reference numerals and description thereof will not be repeated.

[0045] In the discharge device 1 according to the third embodiment shown in Fig. 6, the protective piece 43a-2 has a linear shape that is inclined relative to the side surface 15 of the housing 11 when viewed from the protruding direction D3 of the discharge electrodes 30a, 30b (see Fig. 1, etc.). One end of the protective piece 43a-2 that is closer to the outside of the housing 11 in the protruding direction D3 is supported by the pillar portion 41a, and the other end that is closer to the inside of the housing 11 is supported by the pillar portion 42a. The protective piece 43b-2 also has a linear shape that is inclined relative to the side surface 15 when viewed from the protruding direction D3. The protective pieces 53a-2, 53b-2 have a linear shape that is inclined relative to the side surface 16 when viewed from the protruding direction D3.

[0046] As in the first and second embodiments, in the third embodiment, the corresponding distance between the pair of electrode protection portions 40a, 50a is greater on the other end side (the pillar portions 42a, 52a side) far from the side surface 13 than on the one end side (the pillar portions 41a, 51a side) close to the side surface 13. Similarly, the opposing distance between the pair of electrode protection portions 40b, 50b is greater on the other end side (the pillar portions 42b, 52b side) far from the side surface 14 than on the one end side (the pillar portions 41b, 51b side) close to the side surface 14. Therefore, when workers and end users work from the side surfaces 13, 14 where the opposing distance is smaller, it is possible to prevent fingers or the like from coming into contact with the discharge electrodes 30a, 30b unless intentionally.

[0047] In the third embodiment, the strength of the electrode protection part 40a can also be increased by making the thickness of the pillar part 42a greater than the thickness of the side surface 15. The strength of the pillar parts 42b, 52a, 52b can also be increased by making the thickness of the pillar parts 42b, 52a, 52b greater than the thickness of the side surface.

[0048] <Embodiment 4> In the fourth embodiment, an electrical device equipped with the discharge device 1 according to the first to third embodiments will be described. FIG. 7 is a longitudinal cross-sectional view of an air purifier 100 according to the fourth embodiment. The air purifier 100 is an example of an electrical device. In the air purifier 100, an intake port 102 is provided on the lower rear surface of a main body 101. An outlet 103 is provided on the upper surface of the main body 101, and an outlet 104 is provided on the upper front surface. Note that only one of the outlets 103 and 104 may be provided.

[0049] An air passage 111 is provided inside the main body 101, connecting the air inlet 102 and the air outlets 103 and 104. A blower fan 112 is installed near the air inlet 102 in the air passage 111. The blower fan 112 is a blowing device such as a crossflow fan, and draws external air into the air passage 111 through the air inlet 102. The air inlet 102 is also closed by a filter 114. The filter 114 removes dust and other particles contained in the air drawn into the air passage 111 from the air inlet 102. A lattice-shaped fan guard 115 is installed between the filter 114 and the blower fan 112.

[0050] A mounting hole 113 is provided near the air outlet 104 of the air passage 111. The discharge device 1 is attached to the mounting hole 113. The housing 11 of the discharge device 1 is inserted into the mounting hole 113, and the discharge electrodes 30a, 30b and electrode protection parts 40a, 40b, 50a, 50b protrude into the air passage 111. Ions and the like generated by the discharge device 1 are released into the air passage 111. The air containing the ions and the like is blown out from the air outlets 103, 104. The air flow in the air purifier 100 is indicated by arrows in FIG. 7. The air flow indicated by the arrows in FIG. 7 corresponds to the air flow direction D2 shown in FIG. 1 and the like.

[0051] The discharge device 1 may be placed anywhere on the air passage 111. In the illustrated example, it is placed near the air outlet 104 so that the end user can easily replace and clean the discharge device 1.

[0052] 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 embodiments, and can be embodied in various forms without departing from the spirit of the present invention.

[0053] For example, in the above embodiment, the discharge device 1 is configured to include two discharge electrodes 30a, 30b. However, the discharge device 1 may be configured to include only one discharge electrode (for example, only the discharge electrode 30a). A pair of electrode protectors 40a, 50a for protecting the discharge electrode 30a is provided around the discharge electrode 30a. Furthermore, in this configuration, it is assumed that workers and end users will attach and detach the discharge device 1 to and from electrical equipment by holding the side surface 13, which faces the side surface 14 on which the connector portion 21 is provided. In this assumption, the opposing distance between the pair of electrode protectors 40a, 50a is greater on the other end side (the side of the pillars 42a, 52a) farther from the side surface 13 than on the one end side (the side of the pillars 41a, 51a) close to the side surface 13, which is expected to be touched by workers and end users. Therefore, when workers and end users hold the side surface 13, it is possible to prevent their fingers or the like from coming into contact with the discharge electrode 30a unless unintentionally. [Industrial Applicability]

[0054] The discharge device according to the present invention can be applied to discharge devices that generate ions, electrons, ozone, radicals, active species, etc. by discharging. The discharge device according to the present invention can also be installed in electrical appliances such as air purifiers, air conditioners, fans, refrigerators, and vacuum cleaners. [Explanation of symbols]

[0055] 1 Discharge device 11. Housing 12 Opening 13~16 Side 20 Sealing part 21 Connector part Terminal 22 30a, 30b discharge electrode 40a, 40b, 50a, 50b Electrode protection part 41a, 41b, 42a, 42b, 51a, 51b, 52a, 52b Column section 43a, 43a-1, 43a-2, 43b, 43b-1, 43b-2, 53a, 53a-1, 53a-2, 53b, 53b-1, 53b-2 Protection piece 44a, 44b, 54a, 54b Outer protrusion 45a, 45b, 55a, 55b Inner protrusion 100 Air purifier (electrical equipment) 101 Main Unit 102 Intake port 103, 104 Air outlet 111 Wind path 112 Blower fan (blower device) 113 Mounting holes 114 filters 115 Fan Guard D1 Placement direction D2 Air flow direction D3 Projection direction T13, T15, T16, T41a, T42a, T51a, T52a thickness

Claims

1. a housing having an opening on one side; a discharge electrode protruding from the opening; a pair of electrode protection parts that face each other across the discharge electrode, the opposing distance being different on one end side and the other end side; Equipped with the discharge electrodes include a first discharge electrode and a second discharge electrode that are spaced apart from each other in a plan view, the pair of electrode protection parts includes a first pair of electrode protection parts sandwiching the first discharge electrode and a second pair of electrode protection parts sandwiching the second discharge electrode, an opposing distance between the first pair of electrode protection parts is larger on the one end side that is closer to one of four side surfaces constituting the housing than on the other end side that is farther from the one side surface; an opposing distance between the second pair of electrode protection parts is larger on the one end side farther from the other side surface than on the other end side closer to the one side surface opposite to the one side surface; The other end side of the first pair of electrode protection parts faces the other end side of the second pair of electrode protection parts.

2. The discharge device according to claim 1 , wherein the electrode protection portion has a U-shaped protection piece when viewed from the protruding direction of the discharge electrode.

3. The discharge device according to claim 1 , wherein the electrode protection portion has an L-shaped protection piece when viewed from the protruding direction of the discharge electrode.

4. The discharge device according to claim 1 , wherein the electrode protection portion has a linear protection piece that is inclined relative to a side surface of the housing when viewed from the protruding direction of the discharge electrode.

5. 5. The discharge device according to claim 2, wherein the protective piece is supported by two pillars provided on two perpendicular sides of four sides constituting the housing.

6. The discharge device according to claim 5 , wherein the thickness of the pillar portion is greater than the thickness of the side surface on which the pillar portion is provided.

7. A discharge device described in any one of claims 1 to 6, wherein a connector portion is provided in the arrangement direction of the discharge electrode.

8. The discharge device according to any one of claims 1 to 7; a blower that blows air into an air path that includes a space where the discharge electrode of the discharge device is disposed; Electrical equipment comprising:

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