JP2023146929A - Outdoor power panel - Google Patents

Abstract

To provide a highly reliable outdoor power panel which can properly cool an electric component having high resistance to adhesion of dirt and entry of dust, etc., and an electric component having low resistance to adhesion of dirt and entry of dust, etc.SOLUTION: In an outdoor power panel 10, a first space 40 houses a transformer 50 and communicates with a first air inlet 30 and a first exhaust port 32. A second space 42 houses an electric component 54, such as an inverter, and is formed in an airtight manner against the first space 40 and the third space 44. The third space 44 houses a heat radiation member 68 connected to the electric component 54 and communicates with a second air inlet 34 and a second exhaust port 36. A first fan 56 is supplied with air from the first air inlet 30 to generate airflow flowing in the first space 40 and discharged from the first exhaust port 32. A second fan 58 is supplied with air from the second air inlet 34 to generate airflow flowing in the third space 44 and discharged from the second exhaust port 36.SELECTED DRAWING: Figure 5

Description

The present invention relates to an outdoor power supply panel, and more particularly to an outdoor power supply panel capable of accommodating both electrical components such as transformers and electrical components such as inverters that are less resistant to dirt and dust.

In recent years, in consideration of the rise in average temperature due to global warming, a method for preventing a decrease in the life of an outdoor power distribution board for suppressing an increase in internal temperature has been proposed (see, for example, Patent Document 1). Meanwhile, the need for outdoor power panels is also increasing in order to achieve carbon neutrality. For example, power generated by a photovoltaic panel can be suitably supplied through an outdoor power panel.

However, unlike outdoor power distribution boards, outdoor power boards have electrical parts such as transformers that are relatively resistant to dirt and dust in the air; It is necessary to accommodate both electrical components such as inverters with relatively low Cooling by drawing in outside air is not necessarily appropriate for electrical components that have low resistance to dirt and dust. Additionally, in order to improve the reliability of power supply panels, it is also required to suppress the operation of fans that draw in outside air to cool electrical components.

JP 2019-134549 Publication

The present invention has been made in view of the above-mentioned problems, and provides both electrical parts that are highly resistant to dirt adhesion and intrusion of dust, and electrical parts that are less resistant to dirt adhesion and intrusion of dust. The purpose is to provide a highly reliable outdoor power supply panel that can properly cool.

In order to solve the above problems, an outdoor power supply board according to the present invention has a first space for accommodating a first electrical component, and communicates with a first air supply port and a first exhaust port. and a second space for accommodating a second electrical component that is less resistant to dirt adhesion and intrusion of dust than the first electrical component; a second space airtight with respect to the space; and a third space for accommodating a heat dissipation member connected to the second electrical component, the third space communicating with the second air supply port and the second exhaust port. a third space that is airtight with respect to the second space; and a flow of air that is supplied from the first air supply port, flows within the first space, and is discharged from the first exhaust port. a first air blower device that generates a flow of air that is supplied from a second air supply port, flows within a third space, and is discharged from a second air exhaust port. Be prepared.

According to this aspect, the first electrical component and the second electrical component can be appropriately cooled while avoiding air flow to the second electrical component, which has relatively low resistance to dirt adhesion and intrusion of dust. can do. Further, the first space and the second space can be thermally separated. Therefore, it is possible to suppress the influence of temperature control of the first space on the temperature of the second space, or the influence of temperature control of the second space on the temperature of the first space. Therefore, accurate temperature control of the first space and the second space is possible. Such accurate temperature control not only increases the reliability of the first electrical component and the second electrical component, but also suppresses excessive operation of the first and second blower devices. The reliability of the first air blower and the second air blower can also be improved.

The first space may be located below the second space. The first air supply port and the first air exhaust port, as well as the second air supply port and the second air exhaust port may be arranged on the same side. The first exhaust port may be arranged above the second air supply port.

The outdoor power supply panel includes a transformer, a reactor, an inverter, an AC switch (ACSW), a maximum power point tracker (MPPT), and a maximum power point tracker (MPPT). ) and other electrical components. Among these, transformers have relatively high resistance to dirt and dust infiltration. On the other hand, inverters, ACSWs, and MPPTs have relatively low resistance to dirt adhesion and intrusion of dust. Electrical components such as transformers, which are relatively resistant to dirt and dust, generally have a large mass. According to this aspect, since the first electric component having a large mass is disposed below, the stability of the power supply panel can be improved. In addition, by arranging the first exhaust port above the second air supply port, hot air is prevented from being supplied again for cooling, and the second electrical component is properly discharged. can be cooled to

It may further include a vertical exhaust duct for upwardly transporting air from the first space. The third space may be located on one side of the second space. The vertical exhaust duct may be arranged on the opposite side of the second space.

According to this aspect, the vertical exhaust duct can be extended above the second space and the third space while avoiding interference with the second space and the third space. Therefore, first, the power supply panel can be made more compact. In addition, air containing waste heat from the first electrical component can be discharged above the third space for cooling the second electrical component, and the hot air is returned to the supply air for cooling. It is possible to appropriately cool the second electrical component by avoiding the possibility that the second electrical component will be damaged.

The apparatus may further include a horizontal exhaust duct that horizontally sends air sent from the vertical exhaust duct to the first exhaust port, and a roof plate that is vertically spaced apart above the horizontal exhaust duct.

For example, in Patent Document 1, a ventilation fan storage box is arranged on the top surface of the device. However, this arrangement of the storage box causes the device to protrude upward, and also causes the problem of water intrusion into the interior due to rain. According to this aspect, the horizontal exhaust duct can suppress upward protrusion of the apparatus and also prevent water from entering the interior due to rain. The roof plate also avoids further heating of the air in the horizontal discharge duct.

A pair of second spaces are arranged horizontally above one first space, and a pair of third spaces respectively corresponding to the pair of second spaces are opposite to each other. It may be located on the first side and the second side. The vertical exhaust duct may be arranged between the pair of second spaces. The second air supply port and the second exhaust port of one of the pair of third spaces may be arranged on the first side. The second air supply port and the second exhaust port of the other of the pair of third spaces are arranged on the second side, and the first air supply port and the first exhaust port are arranged on the first side. It may be provided on both the side and the second side. The horizontal exhaust duct may extend from the upper end of the vertical exhaust duct to both the first exhaust port provided on the first side and the first exhaust port provided on the second side.

According to this aspect, the vertical exhaust duct can be arranged between the pair of second spaces. Therefore, a balanced arrangement is possible, and even when accommodating a plurality of second electrical components, it is possible to provide an outdoor power supply panel with a reduced size.

According to the present invention, a reliable system that can appropriately cool both electrical components that are highly resistant to dirt and dust intrusion and electrical components that are less resistant to dirt and dust penetration. It is possible to provide a high-quality outdoor power supply panel.

It is a perspective view of the outdoor power supply board concerning this embodiment. It is a front view of the outdoor power supply board concerning this embodiment. It is a left side view of the outdoor power supply board concerning this embodiment. FIG. 4 is a schematic cross-sectional view taken along the line QQ in FIG. 3 of the outdoor power supply panel according to the present embodiment. FIG. 3 is a schematic PP perspective view in FIG. 2 of the outdoor power supply panel according to the present embodiment. It is a perspective view of the outdoor power supply board concerning this embodiment.

FIG. 1 is a perspective view of an outdoor power supply board 10 according to the present embodiment. FIG. 2 is a front view of the outdoor power supply panel 10 according to the present embodiment. FIG. 3 is a left side view of the outdoor power supply panel 10 according to the present embodiment. The outdoor power supply panel 10 includes a front surface 12, a rear surface 14, a right side surface 16, a left side surface 18, and an upper unit 28. Although the outdoor power supply panel 10 does not actually have a concept of a front side and a rear side, in order to make it easier to understand, in the following explanation, the side numbered 12 in FIGS. 1-3 will be referred to as the front side, and the side numbered 14 will be referred to as the rear side.

The front surface 12 (first side) is composed of a frame plate 20, a lower plate 22, and an upper plate 24. In this embodiment, one frame plate 20, four lower plates 22, and four upper plates 24 are provided on the front surface 12. Of course, the number of lower plates 22 and upper plates 24 is not limited to this.

The lower plate 22 and the upper plate 24 are formed into rectangular shapes that are elongated in the vertical direction. Lower plate 22 and upper plate 24 have the same width. Upper plate 24 is located above lower plate 22. These four combinations of lower plates 22 and upper plates 24 arranged vertically are arranged in the left-right direction. The frame plate 20 has a large opening in the center. Four combinations of lower plates 22 and upper plates 24 are attached to this opening.

The rear surface 14 (second side) is also constituted by a frame plate 20, a lower plate 22, and an upper plate 24. The configuration of the rear surface 14 is similar to that of the front surface 12, so a detailed explanation will be omitted.

The lower plate 22 has a first air supply port 30 . The first air supply port 30 is formed into a substantially square shape. The first air supply port 30 is arranged below the lower plate 22 so that air can be supplied from a lower position. The first air supply port 30 has a louver that slopes upward toward the inside to prevent rain from entering the inside. A filter may be attached to the first air supply port 30. This filter is selected depending on the foreign objects and dust that are allowed to enter the first space 40.

Upper plate 24 has a second air inlet 34 and a second air outlet 36 . The second air supply port 34 is located below the upper plate 24 , and the second exhaust port 36 is located above the upper plate 24 . The second air supply port 34 and the second air exhaust port 36 are formed into horizontally long rectangles.

The upper unit 28 has substantially the same width and depth as the outdoor power supply panel 10, and is formed into a box shape with a small height. The upper unit 28 is placed and fixed on the front surface 12, the rear surface 14, the right side surface 16, and the left side surface 18.

The upper unit 28 has first exhaust ports 32 on the front and rear surfaces. The first exhaust port 32 has approximately the same width as the central two upper plates 24 among the four upper plates 24 . The first exhaust port 32 has a louver that slopes upward toward the inside to prevent rain from entering the inside.

The right side 16 and the left side 18 each have a side door 46. The side door 46 is fixed on both sides by hinges to the front surface 12 and the rear surface 14, respectively, so as to be rotatable about a vertical axis. Thereby, the side door 46 is configured to open at the center. By opening the side door 46, it becomes possible to access the electrical components inside the outdoor power supply panel 10.

FIG. 4 is a schematic cross-sectional view taken along the line QQ in FIG. 3 of the outdoor power supply board 10 according to the present embodiment. FIG. 5 is a schematic PP perspective view in FIG. 2 of the outdoor power supply panel 10 according to the present embodiment. The inside of the outdoor power supply panel 10 will be described in detail below with reference to FIGS. 4 and 5.

The outdoor power supply panel 10 houses a transformer 50 and a reactor 52 (first electrical component). Specifically, a bottom plate 62 is provided inside the outdoor power supply board 10. The transformer 50 and reactor 52 are fixed on this bottom plate 62.

The outdoor power supply panel 10 also accommodates electrical components 54 (second electrical components) such as an inverter, ACSW, and MPPT. In this embodiment, a total of eight electrical components 54 including four MPPTs, three inverters, and one ACSW are housed in the outdoor power supply panel 10. It goes without saying that the type and number of electrical components 54 are not limited to these.

The outdoor power supply board 10 has a first space 40, a second space 42, and a third space 44. The first space 40 is a space for accommodating a transformer 50 and a reactor 52. Since the transformer 50 and the reactor 52 have relatively high resistance to the adhesion of dirt and the intrusion of dust, it is preferable to take in outside air into the space in which they are housed to suppress a rise in temperature due to energization. Therefore, the first space 40 is configured to actively take in outside air.

The second space 42 is a space for accommodating the electrical component 54 described above. The electrical component 54 has lower resistance to the adhesion of dirt and the intrusion of dust than the transformer 50 and the reactor 52. For this reason, cooling the electrical components 54 by drawing in air is not necessarily appropriate. Therefore, the second space 42 is configured not to actively take in outside air. Thereby, failure of the electrical component 54 due to adhesion of dirt or intrusion of dust can be suppressed.

The electrical components 54 housed in the second space 42 are mainly cooled by the heat radiating member 68 rather than by air. The same number of heat dissipating members 68 as the electrical components 54 are provided, and each heat dissipating member 68 is connected to the corresponding electrical component 54 . The heat dissipation member 68 is a so-called heat sink and has a large number of fins. Since the heat dissipation member 68 is a well-known member, detailed description thereof will be omitted.

The third space 44 is a space for accommodating a heat dissipation member 68 connected to the electrical component 54. The third space 44 communicates with the second air supply port 34 and the second air exhaust port 36 . A second fan 58 (second blower) is attached to the heat radiation member 68. The second fan 58 creates a flow of air that is supplied from the second air inlet 34 , flows through the third space 44 , and is exhausted from the second exhaust port 36 .

Electrical components 54 are fixed to corresponding second partition plates 66. A heat dissipation member 68 is also fixed to the electrical component 54. The second partition plate 66 has an opening into which a heat radiating member 68 is inserted. When the electrical component 54 is fixed to the second partition plate 66, only the heat radiating member 68 protrudes from the opening of the second partition plate 66 toward the third space 44. In this way, the upper plate 24, the electrical component 54, the second partition plate 66, the heat radiating member 68, and the second fan 58 constitute one electrical component unit 78.

The outdoor power supply board 10 has two side plates 60, two first partition plates 64, and eight second partition plates 66. The first partition plate 64 is formed long in the horizontal direction to a length that can cover all the back surfaces of the four upper plates 24 arranged in the horizontal direction. The first partition plate 64 is bent so that the cross section perpendicular to the extending direction has a U-shape. The first partition plate 64 is fixed to the back surface of the frame plate 20 so as to cover all the back surfaces of the four upper plates 24 arranged in the horizontal direction. Side plate 60 has approximately the same shape and size as right side 16 and left side 18. The two side plates 60 are attached to the two first partition plates 64, the frame plates 20 on both the front surface 12 and the rear surface 14, and the bottom plate 62 so as to close the openings on both sides of the two first partition plates 64. Fixed. At this time, the first partition plate 64 is airtightly fixed to the frame plate 20. Further, the two side plates 60 are each airtightly fixed to both sides of the first partition plate 64.

The eight second partition plates 66 are formed into rectangular tab shapes. The opening of the second partition plate 66 is formed into a rectangular shape that is slightly smaller than the upper plate 24. The opening of the second partition plate 66 is fixed to the back surface of the upper plate 24. At this time, the second partition plate 66 is airtightly fixed to the upper plate 24. Further, the second partition plate 66 is fixed to the upper plate 24 such that the second air supply port 34 and the second air exhaust port 36 are arranged inside the opening.

A second space 42 is defined by the second partition plate 66, the frame plate 20, the upper plate 24, and the first partition plate 64. The second space 42 is configured to be airtight with respect to the first space 40. A third space 44 is also defined by the first partition plate 64 and the upper plate 24 . The third space 44 is configured to be airtight with respect to the second space 42 . In this way, the second space 42 is configured to be airtight with respect to the first space 40 and the third space 44, and is also configured to be airtight with respect to the outside air. Therefore, it is possible to prevent the electrical components 54 housed in the second space 42 from being contaminated by outside air and from entering the electrical components 54 by dust or the like.

The first space 40 is defined by the lower surfaces of the four lower plates 22 of the front face 12, the four lower plates 22 of the rear face 14, the two side plates 60, the bottom plate 62, and the two first bulkhead plates 64. be done. Since the first air supply port 30 is formed in the lower plate 22, the first space 40 communicates with the first air supply port 30. Note that a heat insulating material 67 is attached to the lower surface of the two first partition plates 64, respectively. The heat insulating material 67 has substantially the same shape and size as the lower surface of the first partition plate 64, and covers almost the entire lower surface of the first partition plate 64. Thereby, the transfer of heat from the first space 40 to the second space 42 can be significantly suppressed.

In this way, the first space 40 is located below the second space 42. As a result, the transformer 50 and the reactor 52, which have a larger mass than the electrical component 54, can be placed below, thereby increasing the stability of the power supply panel.

A gap is formed between the back surfaces of the two first partition plates 64. Further, the upper unit 28 has a roof plate 74 and a ceiling plate 75. The ceiling plate 75 is horizontally fixed to the two frame plates 20 with an interval from the upper surface of the vertical exhaust duct 70. The roof plate 74 is arranged above the ceiling plate 75 at intervals in the vertical direction.

The outdoor power supply panel 10 further includes two internal side plates 76. The internal side plate 76 is formed in a T-shape. The internal side plate 76 is arranged between the first and second upper plates 24 from the right and between the third and fourth upper plates 24 from the right when the outdoor power supply panel 10 is viewed from the front. At this time, the two internal side plates 76 are respectively arranged between the back surfaces of the two first partition plates 64 and between the upper surfaces of the two first partition plates 64 and the lower surface of the ceiling plate 75. Further, the two internal side plates 76 are each airtightly fixed to the back surfaces of the two first partition plates 64, the upper surfaces of the two first partition plates 64, and the lower surface of the ceiling plate 75.

A vertical exhaust duct 70 is defined by the back surfaces of the two first bulkhead plates 64 and the two internal side plates 76 . The vertical exhaust duct 70 extends vertically upward from the first space 40 to send air from the first space 40 upward. The third space 44 is arranged on the front surface 12 side and the rear surface 14 side of the second space 42. The vertical exhaust duct 70 is arranged on the opposite side of the second space 42, that is, on the back side of the second space 42. Thereby, the vertical exhaust duct 70 can be extended above the second space 42 and the third space 44 while avoiding interference with the second space 42 and the third space 44. Therefore, the size of the power supply panel can be suppressed. Further, air containing waste heat from the transformer 50 and the reactor 52 can be discharged above the third space 44. Therefore, it is possible to avoid supplying hot air again for cooling, and to appropriately cool the electrical component 54.

Further, a horizontal exhaust duct 72 is defined by the upper surface of the first partition plate 64, the lower surface of the ceiling plate 75, and the two internal side plates 76. The horizontal exhaust duct 72 has an opening 72a at the lower center. This opening 72a is hermetically connected to the upper end opening of the vertical exhaust duct 70. The horizontal exhaust duct 72 extends in the front-rear direction. The horizontal exhaust duct 72 has first exhaust ports 32 at the front and the rear, respectively. The horizontal exhaust duct 72 horizontally sends the air sent from the vertical exhaust duct 70 to the first exhaust port 32. The first space 40 communicates with the two first exhaust ports 32 via a vertical exhaust duct 70 and a horizontal exhaust duct 72.

Eight first fans 56 (first blower) are arranged inside the horizontal exhaust duct 72. The four first fans 56 are arranged horizontally in front of the opening 72a so as to cause air to flow to the first exhaust port 32 in the front. The remaining four first fans 56 are arranged horizontally behind the opening 72a so as to cause air to flow to the first exhaust port 32 at the rear. The first fan 56 creates a flow of air that is supplied through the first air inlet 30 , flows through the first space 40 , and is discharged through the first exhaust outlet 32 .

In this way, the transformer 50 and the reactor 52, which are arranged in the first space 40 and are relatively resistant to dirt and dust, are appropriately cooled by the air flowing in the first space 40. . Furthermore, the electrical components 54 which are arranged in the second space 42 and have relatively low resistance to the adhesion of dirt and the intrusion of dust, etc., are able to avoid the adhesion of dirt and the intrusion of dust due to air, and the heat dissipation member 68. properly cooled through.

As mentioned above, the roof plate 74 is spaced vertically above the horizontal exhaust duct 72. Furthermore, the roof plate 74 is coated with a heat insulating coating that blocks radiant heat from sunlight. Thereby, it is possible to prevent the air in the horizontal exhaust duct 72 from being further heated by sunlight. In this embodiment, not only the roof plate 74 but also the entire outer wall of the outdoor power supply panel 10, such as the frame plate 20, the lower plate 22, the upper plate 24, and the side door 46, is coated with heat insulation coating. Note that the heat insulating coating may be applied to a part of the outer wall of the outdoor power supply panel 10.

With the above configuration, the first air supply port 30 and the first exhaust port 32, and the second air supply port 34 and the second exhaust port 36 are arranged on the same side in each of the front surface 12 and the rear surface 14. has been done. However, the first air inlet 30 and the second air inlet 34 can be located below the first exhaust port 32 and the second exhaust port 36. Since the temperature of the air discharged from the first exhaust port 32 and the second exhaust port 36 has increased, the air expands upward after being discharged. Therefore, it is possible to prevent the air discharged from the first exhaust port 32 and the second exhaust port 36 from being taken in again from the first air supply port 30 or the second air supply port 34. Interference with exhaust gas can be suppressed.

The outdoor power supply board 10 has a control device (not shown) including a computer such as a microcomputer. The control device is connected to the first fan 56 and the second fan 58 and controls their operation. A first temperature sensor (not shown) is arranged inside the first space 40, and a second temperature sensor (not shown) is arranged inside the second space 42. . These temperature sensors are also connected to the control device. The control device controls the operation of the first fan 56 in response to the temperature of the first space 40 detected by the first temperature sensor. The control device controls the operation of the second fan 58 in response to the temperature of the second space 42 detected by the second temperature sensor.

In this embodiment, as described above, the first space 40 and the second space 42 are thermally separated. Therefore, it is possible to suppress the influence of the temperature control of the first space 40 on the temperature of the second space 42 or the influence of the temperature control of the second space 42 on the temperature of the first space 40 . Therefore, accurate temperature control of the first space 40 and the second space 42 is possible. Such accurate temperature control not only increases the reliability of the transformer 50, the reactor 52, and the electrical components 54, but also suppresses excessive operation of the first fan 56 and the second fan 58, thereby increasing the reliability of the first fan 56 and the second fan 58. The reliability of the second fan 56 and the second fan 58 can also be increased.

Further, with the above configuration, when viewed from the side, the pair of second spaces 42 are arranged horizontally above one first space 40 with the vertical exhaust duct 70 in between. A pair of third spaces 44 respectively corresponding to the pair of second spaces 42 are arranged on the front surface 12 side and the rear surface 14 side facing away from each other. The vertical exhaust duct 70 is arranged between the pair of second spaces 42. The second air supply port 34 and the second exhaust port 36 of one of the pair of third spaces 44 are arranged on the front surface 12. The second air supply port 34 and second air exhaust port 36 of the other pair of third spaces 44 are arranged on the rear surface 14 . The first air supply port 30 and the first air exhaust port 32 are provided on both the front surface 12 and the rear surface 14. The horizontal exhaust duct 72 extends from the upper end of the vertical exhaust duct 70 to both the first exhaust port 32 provided on the front surface 12 and the first exhaust port 32 provided on the rear surface 14 .

Thereby, the vertical exhaust duct 70 can be arranged between the pair of second spaces 42. Therefore, a balanced arrangement is possible, and even when accommodating a plurality of electrical components 54, it is possible to provide an outdoor power supply panel 10 with a reduced size. In addition, since the vertical exhaust duct 70 is not arranged in the second space 42 on the far right and the second space 42 on the far left when viewed from the front, they are constructed integrally at the front and rear, and are divided into a pair. do not have. Note that the rightmost second space 42 and the leftmost second space 42 may also be divided into a pair.

FIG. 6 is a perspective view of the outdoor power supply panel according to this embodiment. In this embodiment, each of the eight upper plates 24 is fixed to the frame plate 20 at its left end portion by a hinge so as to be rotatable about a vertical axis. As a result, as shown in FIG. 6, the electrical component unit 78 is configured to be rotatable about a vertical axis. By opening the electrical component unit 78, the electrical component 54 can be easily accessed, and the electrical component 54 can be easily maintained.

Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above-described embodiments, and the present invention also includes combinations or substitutions of the configurations of the embodiments as appropriate. It is something. Furthermore, it is also possible to make modifications to the embodiments, such as appropriately rearranging the combinations and order of processing in the embodiments and making various design changes, based on the knowledge of those skilled in the art. Embodiments may also be included within the scope of the invention.

10 outdoor power supply panel, 12 front, 14 rear, 16 right side, 18 left side, 20 frame plate, 22 lower plate, 24 upper plate, 28 upper unit, 30 first air supply port, 32 first exhaust Port, 34 Second air supply port, 36 Second exhaust port, 40 First space, 42 Second space, 44 Third space, 46 Side door, 50 Transformer, 52 Reactor, 54 Electrical parts, 56 first fan, 58 second fan, 60 side plate, 62 bottom plate, 64 first partition plate, 66 second partition plate, 68 heat dissipation member, 70 vertical exhaust duct, 72 horizontal exhaust duct, 72a opening part, 74 roof plate, 75 ceiling plate, 76 internal side plate, 78 electrical component unit

Claims (5)

a first space for accommodating a first electrical component, the first space communicating with the first air supply port and the first exhaust port;
A second space for accommodating a second electrical component that is less resistant to dirt adhesion and intrusion of dust than the first electrical component, the second space being airtight with respect to the first space. space and
A third space for accommodating a heat dissipation member connected to the second electric component, which communicates with the second air supply port and the second exhaust port, and which is connected to the second space. An airtight third space,
a first blower device that generates a flow of air that is supplied from a first air supply port, flows within a first space, and is discharged from a first exhaust port;
a second blower device that generates a flow of air that is supplied from the second air supply port, flows within the third space, and is discharged from the second exhaust port;
An outdoor power supply panel characterized by comprising: The first space is located below the second space,
The first air supply port and the first exhaust port, and the second air supply port and the second exhaust port are arranged on the same side,
2. The outdoor power supply board according to claim 1, wherein the first exhaust port is located above the second air supply port. further comprising a vertical exhaust duct that sends air upward from the first space,
The third space is located on one side of the second space,
The outdoor power supply panel according to claim 2, wherein the vertical exhaust duct is arranged on a side opposite to the one side of the second space. a horizontal exhaust duct that horizontally sends air sent from the vertical exhaust duct to the first exhaust port;
a roof plate arranged vertically at intervals above the horizontal exhaust duct;
The outdoor power supply panel according to claim 3, further comprising:. The pair of second spaces are arranged horizontally above one of the first spaces, and the pair of third spaces respectively correspond to the pair of second spaces. , disposed on first and second sides opposite each other;
The vertical exhaust duct is arranged between the pair of second spaces,
The second air supply port and the second exhaust port of one of the pair of third spaces are arranged on the first side,
The second air supply port and the second exhaust port of the other of the pair of third spaces are arranged on the second side,
The first air supply port and the first exhaust port are provided on both the first side and the second side,
The horizontal exhaust duct extends from an upper end of the vertical exhaust duct to both the first exhaust port provided on the first side and the first exhaust port provided on the second side. The outdoor power supply board according to claim 4, characterized by:

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