Discharge device

Abstract

A discharge device is provided that can prevent noise caused by high voltage and adverse effects on peripheral components. [Solution] The discharge device 100 comprises a connector portion 3, an electrode portion 4, and a housing portion 1. Power is applied to the connector portion 3 from the outside. The electrode portion 4 discharges by boosting the voltage from the connector portion 3 and supplying it. The housing portion 1 houses the connector portion 3 and the electrode portion 4. The housing portion 1 has a step portion 2 between the connector portion 3 and the electrode portion 4. The step portion 2 is, for example, a recess 21.

Description

[Technical Field]

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

[0002] The discharge device described in Patent Document 1 includes a connector, a discharge electrode, and a housing. An external voltage is applied through the connector. The discharge electrode discharges by boosting the voltage from the connector and supplying it. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2018 / 055783 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in the discharge device described in Patent Document 1, the path that serves as the reference for the creepage distance between the connector and the discharge electrode is flat. Specifically, the surface along the side wall of the housing between the connector and the discharge electrode is flat.

[0005] In the discharge device described in Patent Document 1, the discharge electrode (electrode portion) is far from the connector (connector portion), so there is no problem, but if the distance between the discharge electrode (electrode portion) and the connector (connector portion) is short, the high voltage caused by the discharge is likely to propagate to the connector. As a result, the high voltage may cause noise and may have a negative impact on surrounding components.

[0006] The present invention has been made in view of the above-mentioned problems, and has an object to provide a discharge device that can prevent noise caused by high voltage and adverse effects on peripheral components. [Means for solving the problem]

[0007] According to one aspect of the present invention, a discharge device includes a connector portion, an electrode portion, and a housing portion. An external voltage is applied by the connector portion. The electrode portion discharges by boosting the voltage from the connector portion to a voltage value with a desired waveform and supplying it. The housing portion houses the connector portion and the electrode portion. The housing portion has a step portion between the connector portion and the electrode portion. [Effects of the Invention]

[0008] The discharge device of the present invention can prevent noise caused by high voltage and adverse effects on peripheral components. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a partially cutaway front view showing a discharge device of a first embodiment. [Figure 2] FIG. 2 is a right side view showing the discharge device of the first embodiment. [Figure 3] 1 is a perspective view showing a discharge device of a first embodiment. [Figure 4] FIG. 10 is a perspective view showing a discharge device of a second embodiment. [Figure 5] FIG. 10 is a perspective view showing a discharge device according to a third embodiment. [Figure 6] FIG. 10 is a perspective view showing a discharge device according to a fourth embodiment. [Figure 7] FIG. 10 is a perspective view showing a discharge device according to a fifth embodiment. [Figure 8] FIG. 10 is a perspective view showing a discharge device of a sixth embodiment. [Figure 9] FIG. 10 is a partially cutaway front view showing a discharge device of a sixth embodiment. [Figure 10] FIG. 11 is a perspective view showing a discharge device of a seventh embodiment. [Figure 11] FIG. 13 is a perspective view showing a discharge device according to an eighth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, identical or corresponding parts are designated by the same reference numerals, and descriptions thereof will not be repeated. In the following description, terms such as "upper," "lower," "left," "right," "front," or "rear" that indicate specific positions and directions may be used. These terms are used for convenience to facilitate understanding of the contents of the embodiments, and are not related to the directions in which the embodiments are actually implemented. [Embodiment 1]

[0011] A discharge device 100 according to a first embodiment of the present invention will be described with reference to FIGS.

[0012] Fig. 1 is a partially cutaway front view showing a discharge device 100 of embodiment 1. Fig. 2 is a right side view showing the discharge device 100 of embodiment 1. Fig. 3 is a perspective view showing the discharge device 100 of embodiment 1.

[0013] As shown in FIG. 1, the discharge device 100 includes a connector portion 3, an electrode portion 4, and a housing portion 1. The connector portion 3 is supplied with power from an external source. The electrode portion 4 discharges by boosting the voltage from the connector portion 3 to a voltage value with a desired waveform and supplying it. The housing portion 1 houses the connector portion 3 and the electrode portion 4. The housing portion 1 has a step portion 2 between the connector portion 3 and the electrode portion 4.

[0014] The step 2 between the connector portion 3 and the electrode portion 4 increases the creepage distance between the connector portion 3 and the electrode portion 4. The creepage distance between the connector portion 3 and the electrode portion 4 is the shortest distance on the surface along the housing portion 1 between the connector portion 3 and the electrode portion 4. Therefore, the increase in creepage distance makes it more difficult for high voltage due to discharge to propagate from the electrode portion 4 to the connector portion 3. As a result, it is possible to prevent noise caused by high voltage and adverse effects on surrounding components.

[0015] Discharge device 100 further includes an electrode protection unit 6 and an electronic component group 7. Electrode protection unit 6 protects electrode unit 4. Electronic component group 7 electrically connects connector unit 3 and electrode unit 4. Electronic component group 7 has various electronic components (not shown) mounted on a board to enable discharge at electrode unit 4, and supplies a boosted voltage to electrode unit 4.

[0016] The housing 1 is an insulating housing. The housing 1 is formed, for example, from resin. The housing 1 has a main housing 10 and a sub-housing 18. The main housing 10 has a roughly rectangular parallelepiped shape with the left-right direction being the longitudinal direction. The main housing 10 has an upper surface 11, a lower surface 12, a right side surface 13, and a left side surface 14. In the following, the right side surface 13 and the left side surface 14 will be referred to as the first side surface 13 and the second side surface 14, respectively.

[0017] The connector portion 3 is disposed on the first side surface 13. A step portion 2 is disposed above the connector portion 3 on the first side surface 13. The electrode portion 4 and the electrode protection portion 6 are disposed on the upper surface 11. A sub-accommodation portion 18 protrudes from the lower surface 12. By disposing the connector portion 3 and the step portion 2 on the first side surface 13 and the electrode portion 4 on the upper surface 11, the connector portion 3 and the electrode portion 4 are close to each other, but a long creepage distance can be ensured. Therefore, the electronic component group 7 that electrically connects the connector portion 3 and the electrode portion 4 can be simplified.

[0018] The connector section 3 has a socket 30 and a terminal section 37. The socket 30 is insulating. The socket 30 is formed, for example, from resin. The socket 30 is, for example, integrally molded with the main accommodating section 10. The socket 30 has an upper wall 31, a lower wall 32, a front wall 33, and a rear wall 34. The socket 30 further has a rear wall 35. The rear wall 35 connects the upper wall 31, the lower wall 32, the front wall 33, and the rear wall 34 at the rear side (left side). The right end surfaces of the upper wall 31, the lower wall 32, the front wall 33, and the rear wall 34 are flush with the first side surface 13. The socket 30 has an insertion space 36. The insertion space 36 is surrounded by the upper wall 31, the lower wall 32, the front wall 33, the rear wall 34, and the rear wall 35. The insertion space 36 is a space into which an external connector (for example, a housing) for applying a voltage is inserted, although this is not shown.

[0019] The terminal portion 37 is electrically connected to the electrode portion 4 by the electronic component group 7. The terminal portion 37 penetrates the rear wall 35. The right end 38 of the terminal portion 37 is located further back (left side) than the first side surface 13. Therefore, the right portion of the terminal portion 37 is located within the insertion space 36. The left portion of the terminal portion 37 is connected to the electronic component group 7. The terminal portion 37 is, for example, a plurality of metal pins.

[0020] The electronic component group 7 includes, for example, a control board 73, a high-voltage board 74, and other electronic component groups (not shown). The control board 73 and the high-voltage board 74 are housed in the main housing section 10. The other electronic component groups are housed in the main housing section 10 or the sub-housing section 18. The control board 73 is connected to the left of the rear wall 35 and to the left of the terminal section 37. Therefore, a voltage is applied to the control board 73 from the terminal section 37. The other electronic component groups are mounted on the control board 73 and increase the voltage. The high-voltage board 74 supplies the increased voltage (i.e., high voltage) to the electrode section 4.

[0021] As shown in FIG. 2, the step portion 2 is a recess 21 formed in the first side surface 13. Because the step portion 2 is the recess 21, the overall contour of the housing portion 1 is not significantly changed. Therefore, the versatility of the discharge device 100 can be maintained. The bottom 22 of the recess 21 is preferably located to the left (rearward) of the right end 38 of the terminal portion 37 to increase the creepage distance. As shown in FIGS. 2 and 3, the recess 21 does not reach the front end or rear end of the main housing portion 10. In other words, the recess 21 is sandwiched between the front end piece 15 and the rear end piece 16 of the main housing portion 10 in the front-to-rear direction.

[0022] The recess 21 has a rectangular shape with its longitudinal direction extending in the front-rear direction. The recess 21 is wider than the terminal portion 37 in the front-rear direction. That is, the width 2W of the recess 21 in the front-rear direction is wider than the width 3W of the terminal portion 37 in the front-rear direction (2W > 3W). Here, the front-rear direction refers to a direction perpendicular to the direction along the creepage distance between the electrode portion 4 and the terminal portion 37. Because the recess 21 is wider than the terminal portion 37 in the front-rear direction, a high voltage that can propagate from the electrode portion 4 to the terminal portion 37 passes through the recess 21. This further prevents noise caused by high voltage and adverse effects on surrounding components. Note that the recess 21 may be wider than the terminal portion 37 not only in the front-rear direction but also in any direction intersecting the direction along the creepage distance.

[0023] Preferably, the front end 2f of the recess 21 is located forward of the front end 3f of the terminal portion 37, and the rear end 2r of the recess 21 is located rearward of the rear end 3r of the terminal portion 37. This ensures that the path of high voltage that can propagate from the electrode portion 4 to the terminal portion 37 passes through the recess 21. This further prevents noise caused by high voltage and adverse effects on surrounding components.

[0024] As shown in FIG. 3, the electrode unit 4 has a first electrode 41 and a second electrode 42. The first electrode 41 and the second electrode 42 are brush-like electrodes. The first electrode 41 and the second electrode 42 may be needle-like electrodes. One of the first electrode 41 and the second electrode 42 may be a dielectric electrode surrounding the needle electrode. When a high voltage is applied, the first electrode 41 and the second electrode 42 generate a corona. In other words, each of the first electrode 41 and the second electrode 42 discharges and generates ions. Therefore, each of the first electrode 41 and the second electrode 42 is also referred to as a discharge electrode.

[0025] For example, one of the first electrode 41 and the second electrode 42 emits positive ions by discharging. The positive ions are hydrogen ions (H + ) around which multiple water molecules are clustered, forming a cluster ion [H + (H2O) m(m is any positive number equal to or greater than zero). Furthermore, for example, the other of the first electrode 41 and the second electrode 42 emits negative ions by discharging. The negative ions are oxygen ions (O2 - ) is a cluster ion [O2 - (H2O) n (n is any positive number greater than or equal to zero)].

[0026] When the first electrode 41 and the second electrode 42 emit positive ions and negative ions, respectively, the larger the distance between the first electrode 41 and the second electrode 42, the more the neutralization of the ions emitted from the first electrode 41 and the second electrode 42 can be suppressed, and a high amount of ions can be maintained.

[0027] The released positive and negative ions surround, for example, mold spores floating in the air and cause a chemical reaction on the surface of the mold spores. The chemical reaction generates the active species hydroxyl radical (·OH). The action of the hydroxyl radical (·OH) then removes the mold spores.

[0028] The first electrode 41 is disposed on the right side (closer to the first side surface 13) of the upper surface 11 of the main accommodating portion 10. The second electrode 42 is disposed on the left side (closer to the second side surface 14) of the upper surface 11 of the main accommodating portion 10. That is, the first electrode 41 is closer to the first side surface 13 than to the second side surface 14. The second electrode 42 is closer to the second side surface 14 than to the first side surface 13. Furthermore, the distance A between the first electrode 41 and the first side surface 13 is longer than the distance B between the second electrode 42 and the second side surface 14 (A>B). This increases the creepage distance on the upper surface 11 of the accommodating portion 1. Therefore, the longer creepage distance makes it even more difficult for high voltage due to discharge to propagate from the electrode portion 4 to the connector portion 3. As a result, it is possible to further prevent noise caused by high voltage and adverse effects on peripheral components.

[0029] The electrode protection unit 6 has a first protection body 61, a second protection body 62, and a wall member 63. The first protection body 61 is erected on the right side of the upper surface 11 of the main storage unit 10. The first protection body 61 protects the first electrode 41. The second protection body 62 is erected on the left side of the upper surface 11 of the main storage unit 10. The second protection body 62 protects the second electrode 42. The wall member 63 is disposed between the first electrode 41 and the second electrode 42. The wall member 63 lengthens the leakage path of current that may occur between the first electrode 41 and the second electrode 42. The wall member 63 also functions as a wall to suppress neutralization of positive and negative ions released into the space. [Embodiment 2]

[0030] Next, a discharge device 100 according to a second embodiment of the present invention will be described with reference to Fig. 4. In the second embodiment, the shape of the step portion 2 differs from that of the first embodiment. The differences between the second embodiment and the first embodiment will be described below.

[0031] Fig. 4 is a perspective view showing a discharge device 100 of embodiment 2. As shown in Fig. 4, the step portion 2 is a recess 23 that extends to the front and rear ends of the main accommodating portion 10. This ensures that the path of high voltage that can propagate from the electrode portion 4 to the terminal portion 37 passes through the recess 23. This further prevents noise caused by high voltage and adverse effects on surrounding components. [Embodiment 3]

[0032] Next, a discharge device 100 according to a third embodiment of the present invention will be described with reference to Fig. 5. In the third embodiment, the shape of the step portion 2 differs from that of the first and second embodiments. The differences between the third embodiment and the first and second embodiments will be described below.

[0033] FIG. 5 is a perspective view showing a discharge device 100 of a third embodiment. As shown in FIG. 5, the step portion 2 is a protrusion 28 that extends to the front and rear ends of the main housing portion 10. This ensures that the path of high voltage that can propagate from the electrode portion 4 to the terminal portion 37 passes through the protrusion 28. This further prevents noise caused by high voltage and adverse effects on surrounding components. Furthermore, since the step portion 2 is a protrusion 28, the strength of the housing portion 1 can be increased.

[0034] Although the step portion 2 provided in the discharge device 100 of embodiment 3 has been described as a convex portion 28 that reaches the front and rear ends of the main accommodating portion 10, it may also be a convex portion that does not reach the front and rear ends of the main accommodating portion 10. [Embodiment 4]

[0035] Next, a discharge device 100 according to a fourth embodiment of the present invention will be described with reference to Fig. 6. In the fourth embodiment, the shape of the step portion 2 differs from that of the first to third embodiments. Below, the differences between the fourth embodiment and the first to third embodiments will be described.

[0036] Fig. 6 is a perspective view showing a discharge device 100 of the fourth embodiment. As shown in Fig. 6, the step portion 2 is a plurality of recesses 21. Specifically, the step portion 2 is a two-tiered recess 21 arranged vertically. The two-tiered recesses 21 do not reach the front end or rear end of the main accommodating section 10, respectively. In other words, the two-tiered recesses 21 are sandwiched between the front end piece 15 and the rear end piece 16 of the main accommodating section 10 in the front-rear direction.

[0037] The step portion 2 has two recesses 21, one above the other, which further increases the creepage distance. This makes it even more difficult for high voltage caused by discharge to propagate from the electrode portion 4 to the connector portion 3. As a result, it is possible to further prevent noise caused by high voltage and adverse effects on surrounding components.

[0038] Although the stepped portion 2 of the discharge device 100 of the fourth embodiment has been described as having two vertically-two stepped recesses 21, it may also have three or more vertically-two stepped recesses 21. Furthermore, each recess 21 may extend to the front and rear ends of the main accommodating portion 10. Furthermore, the stepped portion 2 may also be a protruding portion 28 having two or more vertically-two stepped recesses. [Embodiment 5]

[0039] Next, a discharge device 100 according to a fifth embodiment of the present invention will be described with reference to Fig. 7. In the fifth embodiment, the shape of the step portion 2 differs from that of the first to fourth embodiments. Below, the differences between the fifth embodiment and the first to fourth embodiments will be described.

[0040] FIG. 7 is a perspective view showing a discharge device 100 of a fifth embodiment. As shown in FIG. 7, the step portion 2 is a recess 21 and a protrusion 24. The protrusion 24 is disposed within the recess 21. That is, the protrusion 24 protrudes rightward from the bottom 22 of the recess 21. The front and rear ends of the protrusion 24 do not reach the front end 2f and rear end 2r of the recess 21. That is, the front and rear ends of the protrusion 24 are not in contact with the front end piece 15 and rear end piece 16 of the main accommodating section 10. The right end surface of the protrusion 24 is flush with the first side surface 13, for example.

[0041] This not only increases the creepage distance, but also makes the step portion 2 easier to hold by an external holder (not shown). Therefore, it is possible to further prevent noise caused by high voltage and adverse effects on surrounding components, and the step portion 2 is easier to hold by an external holder.

[0042] Incidentally, the portion of the external holder that holds the stepped portion 2 (holding portion) has a shape that corresponds to the recessed portion 21 of the stepped portion 2 and the protruding portion 24 that is arranged in the recessed portion 21 of the stepped portion 2. For example, the holding portion of the external holder has a shape that can be fitted into the recessed portion 21 around the protruding portion 24.

[0043] The right end surface of the protrusion 24 of the step portion 2 included in the discharge device 100 of the fifth embodiment is not limited to being flush with the first side surface 13. For example, the right end surface of the protrusion 24 may be located on the inner side (left side) of the first side surface 13 or on the protruding side (right side) of the first side surface 13. [Embodiment 6]

[0044] Next, a discharge device 100 according to a sixth embodiment of the present invention will be described with reference to Figures 8 and 9. In the sixth embodiment, the shape of the step portion 2 differs from that of the first to fifth embodiments. Below, the differences between the sixth embodiment and the first to fifth embodiments will be described.

[0045] Fig. 8 is a perspective view showing a discharge device 100 of a sixth embodiment. Fig. 9 is a partially cutaway front view showing the discharge device 100 of the sixth embodiment. As shown in Figs. 8 and 9, the step portion 2 is a recess 21 formed on the upper surface 11 of the housing portion 1. The recess 21 is located to the right of the right end of the electrode protection portion 6. The recess 21 does not reach the front end or rear end of the main housing portion 10. In other words, the recess 21 is sandwiched between the front end piece 15 and the rear end piece 16 of the main housing portion 10 in the front-to-rear direction.

[0046] By arranging the recess 21, which is the step portion 2, on the top surface 11 of the main housing portion 10, the space of the main housing portion 10 is effectively utilized. This makes it possible to further prevent noise caused by high voltage and adversely affect peripheral components, and also makes it possible to give the housing portion 1 a rational shape.

[0047] Although the stepped portion 2 provided in the discharge device 100 of the sixth embodiment has been described as a recessed portion 21 that does not reach the front or rear end of the main accommodating portion 10, it may be a recessed portion 23 that reaches the front or rear end of the main accommodating portion 10. The number of recessed portions 21 formed on the top surface 11 of the main accommodating portion 10 is not limited to one, and may be two or more. Furthermore, the stepped portion 2 arranged on the top surface 11 of the main accommodating portion 10 may be one or two or more protruding portions 28. [Embodiment 7]

[0048] Next, a discharge device 100 according to a seventh embodiment of the present invention will be described with reference to Fig. 10. In the seventh embodiment, the shape of the step portion 2 differs from that of the first to sixth embodiments. Below, the differences between the seventh embodiment and the first to sixth embodiments will be described.

[0049] Fig. 10 is a perspective view showing the discharge device 100 of the seventh embodiment. As shown in Fig. 10, the step portion 2 is a recess 21 formed on each of the top surface 11 and the first side surface 13 of the main accommodation portion 10. The recess 21 formed on the top surface 11 is the same as the recess 21 described in the sixth embodiment. The recess 21 formed on the first side surface 13 is the same as the recess 21 described in the first embodiment. Therefore, it is possible to further prevent noise caused by high voltage and adverse effects on peripheral components, and the accommodation portion 1 can be made into a rational shape. [Embodiment 8]

[0050] Next, a discharge device 100 according to an eighth embodiment of the present invention will be described with reference to Fig. 11. In the eighth embodiment, the shape of the step portion 2 differs from that of the first to seventh embodiments. Below, the differences between the eighth embodiment and the first to seventh embodiments will be described.

[0051] FIG. 11 is a perspective view showing a discharge device 100 of embodiment 8. As shown in FIG. 11, the step portion 2 is a corner recess 25, and the recess 21 and protrusion 24 described in embodiment 5. The corner recess 25 has a shape obtained by cutting off the corner formed by the top surface 11 and the first side surface 13 of the main accommodating portion 10. That is, the corner recess 25 is formed on the top surface 11 and the first side surface 13 of the main accommodating portion 10. The corner recess 25 has a vertical bottom 26 and a horizontal bottom 27. The vertical bottom 26 is perpendicular to the top surface 11 of the main accommodating portion 10. The horizontal bottom 27 is perpendicular to the first side surface 13 of the main accommodating portion 10. The vertical bottom 26 and the horizontal bottom 27 are continuous.

[0052] The corner recesses 25, which are step portions 2, are arranged on the top surface 11 and the first side surface 13 of the main storage section 10, thereby making effective use of the space in the main storage section 10. Therefore, the storage section 1 can be made into a rational shape.

[0053] Furthermore, since the step portion 2 also has the recessed portion 21 and the protruding portion 24 described in embodiment 5, it is possible to further prevent noise caused by high voltage and adversely affecting surrounding components, and it is also easier to hold in an external holder.

[0054] The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above embodiments and can be embodied in various forms without departing from the spirit and scope of the present invention. Furthermore, various inventions can be formed by appropriately combining multiple components disclosed in the above embodiments. For example, some components may be omitted from all of the components shown in the embodiments. Furthermore, components from Embodiments 1 to 8 may be appropriately combined. Furthermore, components from different embodiments may be appropriately combined. The drawings mainly show each component in a schematic manner for ease of understanding. The thickness, length, number, spacing, etc. of each illustrated component may differ from the actual components due to the convenience of drawing. Furthermore, the speed, material, shape, dimensions, etc. of each component shown in the above embodiments are merely examples and are not particularly limited. Various modifications are possible within a scope that does not substantially deviate from the configuration of the present invention.

[0055] (1) In the discharge devices 100 of the first to eighth embodiments, the polarities of the first electrode 41 and the second electrode 42 are not described, but this is not particularly limited. For example, the polarities of the first electrode 41 and the second electrode 42 may be different polarities or the same polarity.

[0056] (2) In the discharge devices 100 of the first to eighth embodiments, the electrode unit 4 has been described as having the first electrode 41 and the second electrode 42, but is not limited thereto. For example, the electrode unit 4 may have only the first electrode 41 or the second electrode 42, or may have three or more electrodes.

[0057] (3) In the discharge device 100 of the first embodiment, the recess 21 is described as being wider in the front-rear direction than the terminal portion 37 (2W>3W). However, it is not limited to the recess 21, and the step portion 2 other than the recess 21 may be wider in the front-rear direction than the terminal portion 37. [Industrial Applicability]

[0058] The present invention provides a discharge device and has industrial applicability. [Explanation of symbols]

[0059] 1. Storage section 2 Step 2W Recess width 3W Terminal width 3 Connector part 4 Electrode part 6 Electrode protection part 7 Electronic Components 10 Main Storage Section 11 Top side 12 Bottom side 13 Right side (1st side) 14 Left side (second side) 15 Front end piece 16 Rear end piece 18 Secondary Storage Unit 21 Recess 22 bottom 24 Convex part 25 Corner recess 26 Vertical base 27 Horizontal bottom 30 outlets 31 Upper Wall 32 Lower wall 33 Front wall 34 Back wall 35 Back wall 36 Insertion space 37 Terminal section 38 Right end of terminal 41 1st electrode 42 2nd electrode 61 First Protector 62 Second Protective Body 63 Wall components 73 Control board 74 High Voltage Board 100 Discharge device

Claims

1. a housing portion provided with a connector portion to which a voltage is applied from the outside; an electrode that is held in the housing portion and discharges when a voltage that is a boosted voltage of the voltage applied to the connector portion is applied thereto; The storage section is an upper surface on which the electrodes are disposed; a first side surface that is continuous with the top surface and on which the connector portion is disposed; a recess formed on the upper surface, Discharge device.

2. At least a portion of the recess is formed at a position away from the first end of the upper surface. The discharge device according to claim 1 .

3. At least a portion of the recess is formed parallel to the first end of the upper surface. The discharge device according to claim 2 .

4. At least a part of the recess is formed linearly. The discharge device according to claim 1 .

5. The recess is formed from one end to the other end of the upper surface. The discharge device according to claim 1 .

6. The storage section has a plurality of recesses formed on the upper surface. The discharge device according to claim 1 .

7. The connector portion has a plurality of terminal portions arranged in a straight line, At least a portion of the recess is formed linearly with one direction as a longitudinal direction, a dimension of the recess in one direction is longer than a dimension between both end terminal portions of the plurality of terminal portions; The discharge device according to claim 1 .

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