Louvers and charging devices

Abstract

This louver 1 comprises: a first member 2 having a lid part 22, slits 24 spaced apart in the lid part 22, and rising parts 25 and 26 that extend from he circumferential edge section of the slits 24 toward one side in the depth direction; and a second member 3 having a lid part 32, slits 34 spaced apart in the lid part 32, and rising parts 35 and 36 that extend from the circumferential edge section of the slits 34 toward the other side in the depth direction. The first member 2 and the second member 3 are disposed facing each other, and the slits 24 in the first member 2 and the slits 34 in the second member 3 are offset from each other.

Description

Technical Field

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[0001] The present disclosure relates to a louver and a charging device.

Background Art

[0002] When a cabinet is installed outdoors, an example of a louver that can prevent rainwater and the like from entering the cabinet and prevent deterioration of waterproof performance, and can also improve ventilation performance is disclosed in Patent Document 1. In the technology described in Patent Document 1, the louver is composed of two types, an inner louver and an outer louver.

Prior Art Documents

[0007] According to this disclosure, a charging device comprising the above-mentioned louvers is provided. [Effects of the Invention]

[0008] According to this disclosure, waterproof performance can be improved. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a perspective view of a charging device equipped with louvers according to this embodiment. [Figure 2] Figure 2 is a schematic cross-sectional view showing the inside of a charging device equipped with louvers according to this embodiment. [Figure 3] Figure 3 is a perspective view of the louver according to this embodiment, seen from the upper right front. [Figure 4] Figure 4 is a perspective view of the louver according to this embodiment, seen from above and to the right rear. [Figure 5] Figure 5 is a front view of the louver according to this embodiment. [Figure 6] Figure 6 is a rear view of the louver according to this embodiment. [Figure 7] Figure 7 is a cross-sectional view of the louver according to this embodiment, and is a view taken along line AA in Figure 5. [Figure 8] Figure 8 is a partially enlarged cross-sectional view of the louver according to this embodiment, and is a cross-sectional view taken from the upper right front. [Figure 9]Figure 9 is a perspective view showing the first component. [Figure 10] Figure 10 is a perspective view showing the second member. [Figure 11] Figure 11 is a close-up view of a section of the louver. [Figure 12] Figure 12 is a schematic diagram illustrating the noise leaking from the charging device to the outside. [Figure 13] Figure 13 is a schematic diagram illustrating the interference of noise leaking from the charging device to the outside. [Modes for carrying out the invention]

[0010] The following describes embodiments of the present invention with reference to the drawings, but the present invention is not limited thereto. The components of the embodiments described below can be combined as appropriate. In addition, some components may not be used.

[0011] [Charging device] Figure 1 is a perspective view of a charging device 100 equipped with a louver 1 according to this embodiment. Figure 2 is a schematic cross-sectional view showing the inside of the charging device 100 equipped with a louver 1 according to this embodiment. In Figure 2, various components and devices arranged inside the charging device 100 are omitted from the illustration. The charging device 100 shown in Figures 1 and 2 is a charging facility for charging the battery of a work vehicle (not shown). The charging device 100 is installed in a charging location such as outdoors or in a factory. The charging device 100 has a cable 101 that supplies power to the battery and a plug 102 located at the end of the cable 101. The plug 102 can be plugged into the connector of the work vehicle. A cap 102C that covers the terminal portion is detachably provided on the plug 102. The charging device 100 is supplied with power from a power source connected via a power cable 103. The power source is, for example, an AC power source (commercial power source).

[0012] The charging device 100 takes in air from the outside to the inside of the housing 110 and exhausts the cooled air inside to the outside. A louver 1 is arranged at the inlet and outlet of the external air in the charging device 100. In the present embodiment, the charging device 100 has a suction-side louver 1 arranged on the suction side of the charging device 100 and an exhaust-side louver 1 arranged on the exhaust side.

[0013] The housing 110 is box-shaped. The housing 110 has a wall portion 110a facing downward, a wall portion 110b facing the wall portion 110a, a wall portion 110c connecting the wall portion 110a and the wall portion 110b, wall portions 110d, 110e, and 110f. The wall portion 110d faces the wall portion 110c. The wall portion 110e connects the wall portion 110c and the wall portion 110d. The wall portion 110f faces the wall portion 110e. In the present embodiment, the wall portions 110a, 110b, 110c, 110d, 110e, and 110f are formed of a plate-like material. The housing 110 has a suction port A1 formed on the air suction side and an exhaust port A2 formed on the exhaust side.

[0014] The suction-side louver 1 is provided at the suction port A1. The exhaust-side louver 1 is provided at the exhaust port A2.

[0015] The wall portion 110c is provided with an air suction port A1. The suction port A1 is an opening for introducing gas into the electric component housing chamber 120 and the heat sink housing chamber 130. The suction port A1 is covered by the suction-side louver 1. A suction filter (not shown) is arranged at the suction port A1. The suction filter suppresses dust and the like from entering the inside of the housing 110 from the suction port A1.

[0016] The wall portion 110d is provided with an air exhaust port A2. The exhaust port A2 is an opening for discharging gas from the electric component housing chamber 120 and the heat sink housing chamber 130. The exhaust port A2 is covered by the exhaust-side louver 1. An exhaust filter (not shown) is arranged at the exhaust port A2. The exhaust filter suppresses dust and the like from entering the inside of the housing 110 from the exhaust port A2.

[0017] The intake port A1 and exhaust port A2 are positioned opposite each other. This allows the gas introduced into the heat sink 131 from the intake port A1 to be efficiently discharged from the exhaust port A2.

[0018] A suction fan 112 is provided at the intake port A1. The suction fan 112 introduces gas into the electrical component storage chamber 120. The suction fan 112 introduces gas into the electrical component storage chamber 120 from the intake port A1 by drawing gas from the electrical component storage chamber 120, and discharges it from the exhaust port A2.

[0019] An exhaust fan 113 is provided at exhaust port A2. The exhaust fan 113 introduces gas into the heat sink housing chamber 130. The exhaust fan 113 draws gas from the heat sink housing chamber 130, thereby introducing gas into the heat sink housing chamber 130 from the intake port A1 and discharging it from exhaust port A2.

[0020] A bracket 111 is located inside the housing 110. The space above the bracket 111 is the electrical component housing 120, and the space below it is the heat sink housing 130. Electrical components (not shown) are located in the electrical component housing 120. A heat sink 131, which is a heat dissipation member, is located in the heat sink housing 130. An intake fan 112 is located upstream of the electrical component housing 120. An intake-side louver 1 is located on the outside of the housing 110, facing the intake fan 112. Some electrical components are located on the heat sink 131. A duct 132 is connected downstream of the heat sink 131. An exhaust fan 113 is located downstream of the duct 132. An exhaust-side louver 1 is located on the outside of the housing 110, facing the exhaust fan 113.

[0021] [Luva] As shown in Figures 1 and 2, the louvers 1 are positioned at the air intake and outlet of the charging device 100. More specifically, the intake-side louver 1 is positioned at the intake port A1 of the charging device 100, and the exhaust-side louver 1 is positioned at the exhaust port A2. The intake-side louver 1 and the exhaust-side louver 1 are configured similarly.

[0022] In the following description, when the louver 1 is assembled to the charging device 100, the side exposed to the outside is the front, and the side facing the housing 110 of the charging device 100, which is the mounting part, is the rear. The front-rear direction is the depth direction of the louver 1. In this embodiment, left and right refer to left and right with respect to the front. The left-right direction is the lateral direction of the louver 1. Up is the side perpendicular to the front-rear and left-right directions, pointing upwards. Down is the side perpendicular to the front-rear and left-right directions, pointing downwards. The up-down direction is the vertical direction of the louver 1. The front-rear axis is the X-axis, the up-down axis is the Y-axis, and the left-right axis is the Z-axis.

[0023] Figure 3 is a perspective view of the louver according to this embodiment, viewed from the upper right front. Figure 4 is a perspective view of the louver according to this embodiment, viewed from the upper right rear. Figure 5 is a front view of the louver according to this embodiment. Figure 6 is a rear view of the louver according to this embodiment. Figure 7 is a cross-sectional view of the louver according to this embodiment, viewed from the line AA in Figure 5. Figure 8 is a partially enlarged cross-sectional view of the louver according to this embodiment, viewed from the upper right front. As shown in Figures 3 through 8, the louver 1 comprises a first member 2 and a second member 3. The louver 1 is assembled with the first member 2 and the second member 3 integrally.

[0024] Figure 9 is a perspective view showing the first member. As shown in Figure 9, the first member 2 has a main body 21, a lid 22, and a flange 23. The main body 21 is formed in a rectangular tube shape by walls 21a, 21b, 21c, and 21d. Wall 21b is positioned opposite wall 21a. Wall 21c connects wall 21a and wall 21b. Wall 21d is positioned opposite wall 21c. The lid 22 is positioned at the front end of the main body 21 in the depth direction. The lid 22 is formed of a plate-shaped member. The flange 23 is positioned at the rear end of the main body 21 in the depth direction. The flange 23 flares out in a flange shape from the rear end of the main body 21. The flange 23 is positioned opposite the lid 22. The flange 23 is formed in a rectangular frame shape. The rearward-facing surface 23F of the flange portion 23 faces the housing 110 of the charging device 100.

[0025] The first member 2 has a lid portion 22 provided with spaced-apart slits 24, and a pair of rising portions 25 and 26 extending from the peripheral edge of the slits 24 toward one direction in the depth direction.

[0026] The slits 24 are formed in the lid portion 22. In this embodiment, the slits 24 extend in the vertical direction. Multiple slits 24 are arranged side by side in the horizontal direction of the lid portion 22. In this embodiment, six slits 24 are arranged. As shown in Figure 7, the width of the lid portion 22 located between adjacent slits 24 in the horizontal direction is denoted as d11. For example, d11 is 40 [mm]. The width of a slit 24 is denoted as d12. For example, d12 is 17.5 [mm].

[0027] The rising sections 25 and 26 are positioned opposite each other with the slit 24 in between. The rising sections 25 and 26 are constructed similarly. The rising sections 25 and 26 are made of rectangular plate material. The rising sections 25 and 26 are erected perpendicular to the lid section 22 in the depth direction. As shown in Figure 9, the rising sections 25 and 26 connect the wall section 21a and the wall section 21b. In Figure 7, the width of the rising sections 25 and 26 in the depth direction is d13. d13 is, for example, 15 [mm].

[0028] As shown in Figures 4, 7, and 8, the stepped portion 27 is positioned on the flange portion 23 of the first member 2, and engages with a sealing member (not shown) that seals the space between it and the housing 110, which is the part to be attached. The stepped portion 27 is formed on the rearward-facing surface 23F of the flange portion 23. The stepped portion 27 is formed in a stepped shape on the rearward-facing surface 23F of the flange portion 23. The stepped portion 27 can accommodate the sealing member. The sealing member housed in the stepped portion 27 seals the periphery of the louver 1 and the periphery of the intake port A1 and exhaust port A2 of the housing 110 of the charging device 100.

[0029] When the second member 3 is assembled to the first member 2, the sealing member is pressed against the housing 110 of the charging device 100, sealing the peripheral edge of the second member 3. The sealing member has a size and shape that closes the gap S (see Figure 11), which will be described later.

[0030] As shown in Figures 3 to 8, the first member 2 and the second member 3 are positioned facing each other. The second member 3 is assembled integrally with the first member 2. More specifically, the second member 3 is assembled while housed inside the main body portion 21 of the first member 2.

[0031] Figure 10 is a perspective view showing the second member. As shown in Figure 10, the second member 3 has a main body 31 and a lid 32. The main body 31 is formed in a rectangular tube shape having an outer circumference smaller than the inner circumference of the main body 21 of the first member 2. The main body 31 is formed in a rectangular tube shape by walls 31a, 31b, 31c and 31d. Wall 31b is positioned opposite wall 31a. Wall 31c connects wall 31a and wall 31b. Wall 31d is positioned opposite wall 31c. The lid 32 is positioned at the rear end in the depth direction of the main body 31. The lid 32 is formed of a plate-shaped member.

[0032] As shown in Figures 3 to 8, when the second member 3 is assembled to the first member 2, wall portion 31a faces wall portion 21a, wall portion 31b faces wall portion 21b, wall portion 31c faces wall portion 21c, and wall portion 31d faces wall portion 21d.

[0033] As shown in Figure 10, the second member 3 has a lid portion 32 provided with spaced-apart slits 34, and a pair of rising portions 35 and 36 extending from the periphery of the slits 34 toward the other side in the depth direction.

[0034] The slits 34 are formed in the lid portion 32. In this embodiment, the slits 34 extend in the vertical direction. Multiple slits 34 are arranged side by side in the horizontal direction of the lid portion 32. In this embodiment, five slits 34 are arranged.

[0035] As shown in Figures 3 to 8, when the second member 3 is assembled to the first member 2, the slit 34 is positioned offset from the slit 24 in the lateral direction. When the second member 3 is assembled to the first member 2, the inside of the housing 110 is not visible when viewed from the outside of the housing 110. More specifically, when the second member 3 is assembled to the first member 2, when viewed from the front, the lid portion 32 of the second member 3 is located behind the slit 24. When the second member 3 is assembled to the first member 2, when viewed from the rear, the lid portion 22 of the first member 2 is located in front of the slit 34.

[0036] As shown in Figure 7, the width of the cover portion 32 located between adjacent slits 34 in the horizontal direction is denoted as d21. For example, d21 is 40 [mm]. In this embodiment, d21 = d11. The width of the slit 34 is denoted as d22. For example, d22 is 17.5 [mm]. In this embodiment, d22 = d12.

[0037] The rising sections 35 and 36 are positioned opposite each other with the slit 34 in between. The rising sections 35 and 36 are similarly constructed. The rising sections 35 and 36 are formed from rectangular plate material. The rising sections 35 and 36 are erected perpendicular to the lid section 32 in the depth direction. As shown in Figure 10, the rising sections 35 and 36 connect the wall section 31a and the wall section 31b. In Figure 7, the width of the rising sections 35 and 36 in the depth direction is d23. d23 is, for example, 15 [mm]. In this embodiment, d23 = d13.

[0038] The first member 2 and the second member 3 are arranged facing each other in the direction in which their respective rising portions 25 and 26, and rising portions 35 and 36 extend. In this embodiment, the rising portions 25 and 26 of the first member 2 and the rising portions 35 and 36 of the second member 3 partially overlap in the depth direction.

[0039] As shown in Figure 10, the second member 3 has four legs 37 and ten legs 38. The legs 37 and 38 protrude forward from the rising portions 35 and 36. The legs 37 are erected from the corners of the main body 31. The legs 37 extend forward. The legs 38 are erected from the upper and lower ends of the slit 34. The legs 38 extend forward. The front ends of the legs 37 and 38 contact the lid portion 22 of the main body 21 of the first member 2. The second member 3 is positioned in the depth direction relative to the first member 2 by the legs 37 and 38. The rising portions 35 and 36 are spaced apart from the lid portion 22 of the first member 2. As a result, a gas flow path is formed between the lid portion 22, the rising portion 25, and the rising portion 26 of the first member 2, and the lid portion 32, the rising portion 35, and the rising portion 36 of the second member 3.

[0040] As shown in Figure 7, in the gas flow path, the width in the depth direction between the rear end of the riser portion 26 and the cover portion 32 is d31, the width in the lateral direction between the riser portion 26 and the riser portion 36 is d32, and the width in the depth direction between the front end of the riser portion 36 and the cover portion 22 is d33. It is preferable that d31, d32, and d33 are the same. Furthermore, the width d12 of the slit 24 and the width d22 of the slit 34 and the widths d31, d32, and d33 of the gas flow path are related by d12 = 2 × d31 (d12 = d22, d31 = d32, d31 = d33).

[0041] Figure 11 is a magnified view of a portion of the louver. As shown in Figure 11, the lower end of the second member 3 creates a gap S between it and the first member 2. More specifically, the upward-facing surface 21aF of the wall portion 21a and the lower end of the cover portion 32 are not in close contact, and a gap S is created.

[0042] Each component of the louver 1, as configured in this way, is formed by resin molding.

[0043] [Effect] Let's explain the airflow. The intake fan 112 and exhaust fan 113 operate, drawing air from the outside to the inside of the housing 110 through the intake louver 1, and the cooled air is exhausted to the outside through the exhaust louver 1. More specifically, air is drawn into the interior of the intake louver 1 of the charging device 100 through the slit 24 of the intake louver 1. The air flowing in through the slit 24 passes through the flow path formed between the first member 2 and the second member 3, and flows into the interior through the slit 34 and the intake port A1 of the housing 110. The incoming air flows into the electrical component housing chamber 120 and the heat sink housing chamber 130. As the air passes through the electrical component housing chamber 120 and the heat sink housing chamber 130, the components placed there are cooled. Then, the air that has cooled the inside of the housing 110 passes through the exhaust port A2 and is drawn into the interior of the exhaust louver 1 through the slit 34 of the exhaust louver 1. The air flowing in through the slit 34 passes through the channel formed between the first member 2 and the second member 3, and is then discharged to the outside through the slit 24.

[0044] Next, let's explain the waterproofing performance. In the louver 1, the cover portion 32 of the second member 3 is located behind the slit 24, and the cover portion 22 of the first member 2 is located in front of the slit 34. Therefore, the direct flow of liquids such as water from the louver 1 into the interior of the housing 110 is restricted.

[0045] The following describes the case when a liquid such as water adheres to the louver 1. In the following, water is described as an example of a liquid. Water blown diagonally onto the louver 1 is prevented from entering the interior by the rising portions 35 and 36 of the second member 3. Also, water adhering to the lid portion 22 of the first member 2 flows down along the lid portion 22 and does not enter the interior of the louver 1. Water adhering to the rising portions 25 and 26 of the first member 2, or the lid portion 32 of the second member 3, flows down along each member. Then, at the bottom of the slit 24, it reaches the wall portions 21a and 31a. The sealing member housed in the stepped portion 27 seals the periphery of the louver 1 and the periphery of the housing 110 of the charging device 100. In addition, the wall portions 21a and 31a are formed with a draft angle during molding, which is inclined from rear to front, or in other words, from the inside to the outside. As a result, water flows along the wall sections 21a and 31a and is discharged to the outside.

[0046] Next, the noise of the charging device 100 equipped with louvers 1 will be explained using Figures 12 and 13. Figure 12 is a schematic diagram illustrating the noise leaking from the charging device to the outside. Figure 13 is a schematic diagram illustrating the interference of noise leaking from the charging device to the outside. For the sake of simplicity, we will explain the case where the charging device 100 has one louver 1. During operation, the charging device 100 generates high-frequency switching noise from the transformer. Figure 12 schematically shows the slits 24 of the louver 1 and the spread of sound leaking from the slits 24 when the charging device 100 is viewed from above. As shown in Figure 12, the sound inside the charging device 100 spreads outward from each slit 24.

[0047] The sound emanating from the slits 24, in other words, the noise generated during the operation of the charging device 100, varies depending on interference conditions such as the distance between the user and the slits 24, the wavelength of the sound (i.e., the frequency), and the slit pitch (the distance between the centers of the slits), which is the distance between adjacent slits 24. The sounds emanating from the slits 24 interfere with each other, either reinforcing or weakening each other. Depending on the user's position, the sound emanating from the slits 24 may sound louder due to reinforcement in some areas, or quieter due to weakening in other areas.

[0048] For example, let the slit width d11 be 17.5 [mm], the slit pitch be 64 [mm], the sound frequency be 100 [Hz], and the distance L from slit 24 be 3 [m]. In this case, if the wavelength of the sound is λ, the lateral distance of the charging device 100 is dx, the distance in the direction away from slit 24 is L, and m is a natural number, then at positions where equation 1 holds true, the sounds reinforce each other, and at positions where equation 2 holds true, the sounds cancel each other out. dx / L = λ / 2 × 2m ... (1) dx / L = λ / 2 × (2m + 1) ... (2)

[0049] Figure 13 shows the relationship between the user's position and the noise level at a distance L=3[m] from the slit 24. In Figure 13, the horizontal axis represents the lateral distance dx of the charging device 100, and the vertical axis represents the wavelength of sound. As shown in Figure 13, under the above conditions, it was confirmed that the intensity of the sound changes with a period of approximately 30[cm] for dx. If the user finds the sound too loud, it is possible to improve the perception of the sound by adjusting the angle of the charging device 100.

[0050] [effect] As described above, in this embodiment, the slit 24 of the first member 2 and the slit 34 of the second member 3 are offset from each other in the lateral direction. In this embodiment, the cover portion 32 of the second member 3 is located behind the slit 24, and the cover portion 22 of the first member 2 is located in front of the slit 34. According to this embodiment, it is possible to restrict the visibility of the inside of the housing 110. According to this embodiment, it is possible to restrict water from entering the inside of the housing 110 from the louvers 1.

[0051] In this embodiment, the slit 24 of the first member 2 and the slit 34 of the second member 3 extend in the vertical direction. In this embodiment, water adhering to the lid portion 22 of the first member 2 flows straight down along the lid portion 22, thus preventing it from entering the interior of the louver 1. In this embodiment, water adhering to the lid portion 22 of the first member 2 can be prevented from entering the interior of the louver 1.

[0052] In this embodiment, the rising portions 25 and 26 of the first member 2 and the rising portions 35 and 36 of the second member 3 partially overlap in the depth direction. In this embodiment, water blown diagonally into the slit 24 can be prevented from entering the interior by the rising portions 35 and 36 of the second member 3. This embodiment ensures a passage for air drawn into the interior of the housing 110 and a passage for air discharged to the outside of the housing 110. Furthermore, this embodiment allows for a reduction in the thickness of the louver 1 in the depth direction.

[0053] In this embodiment, the first member 2 has a stepped portion 27 into which a sealing member engages, which seals the space between it and the housing 110 of the charging device 100. According to this embodiment, the sealing member can seal the peripheral edge of the louver 1 and the peripheral edge of the housing 110 of the charging device 100.

[0054] In this embodiment, a gap S is created between the lower end of the second member 3 and the first member 2. According to this embodiment, water adhering to the rising portion 25 and rising portion 26 of the first member 2, or the lid portion 32 of the second member 3, can be discharged to the outside along the wall portion 21a and wall portion 31a due to the draft angle of the wall portion 21a and wall portion 31a and the sealing member.

[0055] In this way, according to this embodiment, it is possible to reliably prevent water from entering the interior of the housing 110 from the louver 1. This embodiment can improve waterproof performance.

[0056] In this embodiment, during the operation of the charging device 100, the noise leaking from the slit 24 of the louver 1 may sound louder in some locations due to sound reinforcement, or quieter in other locations due to sound weakening, depending on the user's position. In this embodiment, the way the sound is heard can be improved, for example, by adjusting the angle of the charging device 100.

[0057] Although this embodiment has been described above, it is not limited to the above. Furthermore, the components described above include those that can be easily imagined by a person skilled in the art, those that are substantially the same, and those that are equivalent. Moreover, the components described above can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the components can be made without departing from the gist of this embodiment.

[0058] In this embodiment, the rising portions 25 and 26 of the first member 2 and the rising portions 35 and 36 of the second member 3 are assumed to overlap in the depth direction, but they do not necessarily have to overlap. The rear ends of the rising portions 25 and 26 and the front ends of the rising portions 35 and 36 may be at the same position in the depth direction.

[0059] In the above description, the rising portions 25 and 26 of the first member 2 and the rising portions 35 and 36 of the second member 3 were described as rising perpendicularly to the lid portion 22 or lid portion 32, but this is not limited to this. The rising portions 25 and 26 and the rising portions 35 and 36 may be inclined rather than perpendicular to the lid portion 22 or lid portion 32. The rising portions 25 and 26 and the rising portions 35 and 36 may be connected to the lid portion 22 or lid portion 32 via a curved portion. [Explanation of Symbols]

[0060] 1...Louver, 2...First member, 21...Main body, 21a...Wall, 21aF...Surface, 21b...Wall, 21c...Wall, 21d...Wall, 22...Lid, 23...Flange, 24...Slit, 25...Rising section, 26...Rising section, 27...Stepped section, 3...Second member, 31...Main body, 31a...Wall, 31b...Wall, 31c...Wall, 31d...Wall, 32...Lid, 34...Slit, 35...Rising section, 36...Rising section, 37...Legs 38...legs, 100...charging device, 101...cable, 102...plug, 103...power cable, 110...casing, 110a...wall, 110b...wall, 110c...wall, 110d...wall, 110e...wall, 110f...wall, 112...intake fan, 113...exhaust fan, 120...electrical component housing, 130...heat sink housing, 131...heat sink, 132...duct, intake port A1..., A2...exhaust port, S...gap.

Claims

1. A first member having a lid portion with spaced-apart slits and a rising portion extending from the peripheral edge of the slits toward one direction in the depth direction, A second member having a lid portion with spaced-apart slits and a rising portion extending from the peripheral edge of the slits toward the other side in the depth direction, Equipped with, The first member and the second member are arranged facing each other in the direction in which the rising portion extends. The slit of the first member and the slit of the second member are positioned offset from each other. The slits in the first member and the slits in the second member extend vertically to the end of the lid, The slit of the first member and the slit of the second member are formed from the rising portion and the lid portion, The rising portion of the first member and the rising portion of the second member overlap in part in the depth direction. Louver.

2. The rising portions of the first member are arranged opposite each other as a pair, with the slit of the first member in between. The rising portions of the second member are arranged opposite each other as a pair, with the slit of the second member in between. The louver according to claim 1.

3. A stepped portion is arranged on the outer circumference of the first member, and a sealing member that seals the space between it and the mounting portion engages with it. A louver according to claim 1 or 2, comprising:

4. The lower end of the second member creates a gap between it and the first member. The louver according to claim 3.

5. A charging device comprising a louver according to any one of claims 1 to 4.

6. The charging device according to claim 5, comprising a transformer that generates high-frequency switching noise.

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