JP2003153404A - Power receiving/distributing apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cubicle switchboard having a ventilating means which has superior workability and safety for manufacturing, transportation, installation, inspection, etc. SOLUTION: This power receiving/distributing apparatus comprises a cubicle, a transformer founded on the bottom of the cubicle, and a roof of the cubicle. The roof has an inclination from a horizontal plane. A fan is provided in a space near the high part of the inclined roof and inside the wall of the cubicle on the side of the high part of the roof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat dissipation structure for cubicle type power receiving and distributing equipment.

[0002]

2. Description of the Related Art A conventional forced ventilation structure for an outdoor cubicle type power receiving and distributing facility (hereinafter referred to as power receiving and distributing facility) is shown in FIGS.
Will be explained. FIG. 4 is an example of a forced ventilation structure of a conventional outdoor cubicle type power receiving and distributing facility (hereinafter referred to as power receiving and distributing facility). In this case, the propeller-type fan 158 is used as a forced ventilation device, and in addition to the exhaust port for natural ventilation that is normally arranged, by arranging this device on the upper part 156 of the roof and outside the door surface, it is heated inside the switchboard. The rising air was forcibly discharged to the outside. In addition, JP 2000
In the ventilation means of the power receiving and distributing equipment, which is the invention described in the cubicle type switchboard, as shown in FIG. 5, a planar shape is provided so as to guide the warm air rising inside the switchboard to the eaves part 110. The wind-tunnel-shaped ceiling part 1 by the roof part 106 and the roof support part 107 supporting the roof part.
No. 08 is formed, and the ventilation means is installed inside the eaves portion so as to be attachable and detachable from below the eaves portion, so that the conventional technique described in the above publication is disclosed. In comparison, the forced ventilation device provided a highly safe and easy maintenance and inspection of the ventilation means.

[0003]

The conventional ventilation device described above has the following problems.

In maintenance and inspection of the ventilation device and replacement of the ventilation fan, it is necessary to work on the roof of the cubicle to which a high voltage is applied, which is a security defect.

There are drawbacks such as a complicated structure of the roof portion and the ventilation device cover, high cost, and difficulty in pinhole inspection of the welded portion. Overlooking the pinhole is a fatal defect of water leakage. Was imitating.

Cubicles are often installed on the rooftops of buildings, etc. If the ventilation device is installed on the roof of the cubicle, it is easily affected by wind and rain, and there are unexpected situations such as collision of flying objects. It had the drawback of causing water leaks and secondary accidents. It is expected that the situation will be particularly severe during a storm.

In a heavy snow area, there is a drawback that the ventilation fan exhaust port on the cubicle roof is covered with snow, resulting in a significant decrease in efficiency.

The propeller-type ventilation fan, which has been widely used in the past, has a drawback that gas is accumulated or vortexes are generated in a corner or the like in a rectangular switchboard because the airflow is concentrated in one place.

When the ventilation fan is installed on the roof of the cubicle, the cubicle becomes tall, the height limit of the Road Traffic Law cannot be cleared when the truck is loaded, and the cubicle type switchboard must be disassembled. was there.

When a cubicle type switchboard is connected in a large-scale power receiving and transforming facility, when only some of the ventilation fans are operated, the exhaust air flow is short-circuited, which may reduce the warm air suction capacity. There was a flaw. That is, FIG.
At cubicle type switchboard 162, 163, 16
When 4 is connected, the ventilation fans 165 and 167 are stopped, and when only the ventilation fan 166 is operated, the exhaust flow is short-circuited and recirculates as shown by arrows a and b, and the exhaust flow as shown by arrow c is generated. The ability to suck has diminished.

Further, the ventilation means, which is the invention of the above publication, has the following problems.

Since the ventilation holes for intake air are arranged at the place where the transformer 104 is placed on the foundation table 101 and the cubicle floor 102 and in the vicinity thereof, it becomes difficult to form the flow of the ascending air current, and the heat generated by other transformers is not generated. The ventilation effect on the body is weak.

A wind tunnel-shaped ceiling is formed by a flat roof portion and a roof support portion that supports the roof portion 106, and the ventilation means 111 is attached to and detached from the outside of the eave portion inside the eave portion. Although it is installed so that work can be performed, the intake direction of the ventilation means 111 is limited to the horizontal direction. For this reason, it is more difficult to form an ascending airflow in other heat generating parts inside the switchboard, which does not have a ventilation hole for the intake air around it, and the ventilation effect cannot be expected any more.

The function required of the eaves is the ability to withstand wind and rain and flying objects for a long period of 20 years or more and the ability to prevent rainwater from entering the inside of the switchboard without impairing the ventilation ability. It is difficult to protect the switchboard for a long time from the splash of rain and wind and the entry of flying objects with a simple vent plate provided in the evacuation direction of the eaves part in actual operation. Also, in order to protect, it is necessary to improve the structure of the ventilation hole plate or to separately provide a rainwater shielding plate near the eaves portion, which makes the structure complicated.

As the ventilation means to be housed in the eaves part, it is necessary to select a device having waterproof performance for the same reason as described above. Therefore, it is necessary to use a device having inferior ventilation / volume capacity as compared with a popular product. The same consideration needs to be given to the wiring section. Therefore, as a result, the cost naturally rises, so it is necessary to consider the actual adoption.

The present invention has been made in consideration of the above-mentioned conventional problems.
It is an object of the present invention to provide a cubicle type switchboard having a forced ventilation means which is excellent in workability and safety such as transportation, installation and inspection.

[0017]

In order to achieve this object, the power distribution equipment according to claim 1 of the present invention is a box of the power distribution equipment, a transformer installed in the box, and the box. A roof portion of the body, the roof portion is formed to have a slope with respect to a horizontal plane, the roof portion near the high portion of the slope roof portion, and the roof portion having the slope. A fan portion is provided inside the wall surface of the box near the high portion.

The power distribution equipment according to claim 2 of the present invention comprises a box of the power distribution equipment, a transformer installed in the box, and a roof part of the box, and the roof part. Is formed so as to have a slope with respect to a horizontal plane, is near the high part of the sloped roof part, and is near the high part of the sloped roof part. It has a configuration in which a fan part is provided inside and a blowout port is provided on the leeward side of the fan part, and a waterproof part is provided inside the blowout port.

The power distribution equipment according to claim 3 of the present invention comprises a box of the power distribution equipment, a transformer installed in the box, and a roof part of the box, and the roof part. Is formed so as to have a slope with respect to a horizontal plane, is near the high part of the sloped roof part, and is near the high part of the sloped roof part. It has a configuration in which a heat source is arranged inside the fan unit and between the fan unit and the transformer.

According to a fourth aspect of the present invention, there is provided the power receiving and distributing facility according to any one of the first to third aspects, in which the fan portion is a cross flow fan.

The power distribution equipment according to a fifth aspect of the present invention comprises a box of the power distribution equipment, a transformer installed in the box, and a roof portion of the box, and the roof portion. Is formed so as to have a slope with respect to a horizontal plane, is near the high part of the sloped roof part, and is near the high part of the sloped roof part. It has the structure which provided the 1st fan part provided in the inner side, and the 2nd fan part which produces a wind so that it may go along with the said transformer and the inner wall of the said box.

The power distribution equipment according to claim 6 of the present invention comprises a box of the power distribution equipment, a transformer installed in the box, and a roof part of the box, and the roof part. Is formed so as to have a slope with respect to a horizontal plane, is near the high part of the sloped roof part, and is near the high part of the sloped roof part. It has a configuration in which a first fan portion provided on the inner side and a second fan portion provided near the lower portion of the transformer are provided.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the power distribution equipment according to claim 1, the fan part is provided inside the wall surface of the box near the high part of the roof part so that the fan part can serve as a ventilation path. It is possible to use the ventilation hole near the roof, which is arranged before the equipment.

According to the power receiving and distributing equipment of the second aspect, in addition to the structure of the first aspect, the waterproof performance is enhanced by providing the waterproof portion inside the blowout port provided on the leeward side of the fan portion. can do.

According to the power receiving and distributing equipment of claim 3, in addition to the structure of claim 1, even when a heat source is provided between the fan part and the fan part and the transformer, It is possible to efficiently dissipate heat.

According to the power receiving and distributing facility of the fourth aspect, in the configuration according to any one of the first to third aspects, ventilation can be efficiently performed by using a cross flow fan for the fan part.

According to the power receiving and distributing equipment of the fifth aspect, the first fan portion installed at a high position near the roof portion is in charge of discharging hot air near the upper portion of the box body to the outside. Then
The second fan unit generates wind so as to extend between the transformer, which is the main heating element, and the inner wall of the box body, thereby promoting heat dissipation of the transformer and the first fan unit. Since it supports the blowing of high-temperature air inside the box, it is possible to perform exhaust heat associated with very efficient blowing and ventilation.

According to the power receiving and distributing equipment of the sixth aspect, the first fan portion installed at a high position near the roof portion is in charge of exhausting hot air near the upper portion of the box body to the outside. Then
The second installed near the bottom of the transformer, which is the main heating element
The fan part of the transformer generates wind along the surface of the transformer from the lower side to the upper side of the transformer to promote heat dissipation of the transformer, and at the same time, the high temperature air in the box to the first fan part. In order to support the ventilation of air, it is possible to perform exhaust heat associated with very efficient ventilation and ventilation.

The embodiments of the present invention will be described below.

FIG. 1 is a sectional view of a cubicle type switchboard showing an example of the first to fourth embodiments of the present invention. Figure 2
FIG. 6 is a sectional view of a cubicle type switchboard showing an example of fifth and sixth embodiments of the present invention. FIG. 3 is a cross-sectional shape of an upper vent hole (blowout port) and a fan portion of the cubicle type switchboard.

The cubicle type switchboard according to the present embodiment will be described with reference to the drawings. Reference numeral 1 indicates a box, which incorporates a transformer and the like, which will be described later. Reference numeral 2 indicates the bottom surface of this box, reference numeral 3 indicates a transformer placed on the floor surface of the box 1, and reference numeral 4 indicates a structure that is oblique to the horizontal direction. The roof part, which is designated by reference numeral 5, is
A wall portion including a door portion and a side plate, denoted by reference numeral 6, is a fan portion provided inside a wall surface 5 of the box body 1, which is a higher portion of the roof portion 4 having a slope, and denoted by reference numeral 8. Is a blow-out port for returning the air inside the box body to the outside of the box body 1 after recirculating the inside of the fan unit 6.

Reference numeral 15 indicates a high-voltage load switch housed in the box 1, and reference numeral 16 indicates the box 1.
It is a low voltage load switch provided inside. Also, reference numeral 17
Indicated by is a conductive portion that electrically connects and wires the transformer 3, the high-voltage load switch 15, and the low-voltage load switch 16, and these devices and the conductive portion generate heat.

Reference numeral 19 is a lower vent hole provided in the lower portion of the front surface and the back surface of the box body 1 for taking in outside air into the inside of the box body 1, a reference numeral 20 is a roof stand,
Reference numeral 22 indicates an eaves portion that forms a part of the roof portion 4 that is provided so as to project on the front surface side of the box body 1.

Base part at the bottom of the box and roof part 4 at the top of the box
The ventilation outlets provided near the are equipped with rain flaps that take measures to prevent rain. Moreover, it is desirable that the slope of the roof portion is 1/30 or more. Further, there is a case where a bottom plate having a ventilation hole is provided on the upper portion of the base portion below the box body.

With respect to the cubicle type switchboard configured as described above, the mechanism of heat dissipation by ventilation will be described with reference to FIGS.

Since the state of heat radiation changes depending on whether the fan unit 6 is started or not, the description will be divided into two states, a natural ventilation state when stopped and a forced ventilation state when started. First, the mechanism of heat dissipation in the natural ventilation state will be described through the flow of air.

The outside air taken into the inside of the box through the lower ventilation hole 19 takes heat from the heat source such as the transformer 3 and expands, and starts to rise in the box by natural convection. The hot air that has reached the vicinity of the roof in the upper part of the box body will be sequentially discharged to the outside of the box body through the upper ventilation holes. The first state is to radiate heat from the heating elements such as the transformer 3, the low-voltage load switch 16, and the conductive portion 17 by continuously repeating such natural convection action.

Next, the mechanism of heat dissipation when the fan is started will be described in the same manner.

[0039] Mainly because of the necessity of waterproofing, the exhaust passage provided in the roof portion 4 is generally narrow and bent, and inevitably has a structure in which air does not easily flow. For this reason, when the amount of heat generated by the internal equipment such as the transformer 3 increases due to an increase in load, the air that has risen due to thermal expansion is not sufficiently discharged to the outside of the box body and near the roof near the roof. There was a weakness that the convection action could not catch up and the temperature inside the box would rise.

When the fan unit 6 is started in this state, the heated air is expelled from the upper ventilation hole, so that the convection action is promoted and an efficient circulation environment of heat radiation can be created.

At this time, the suction port of the fan portion 6 is provided on the lower side surface of the fan portion 6 so as to face the inside of the box, as shown in FIG. Therefore, not only the air that has passed through the vicinity of the transformer 3 but also the air around the low-voltage load switch 16 and the conductive portion 17, which are heat sources, can be actively discharged to the outside.

Further, since the fan portion is provided in the ventilation passage, a hood having complicated external measures against rain and a new ventilation passage are provided like the upper ventilation hole provided in the conventional power receiving and distributing equipment. There is no need to provide it, and with a very simple structure,
A very effective wind force can be obtained. Further, the roof which is the outer surface of the power receiving and distribution equipment, the side surface portion, since the protrusion of the hood on the wall surface portion such as the door portion is eliminated, the restriction in the height direction during transportation and the restriction in the width direction are eased, It is possible to provide power receiving and distribution equipment with excellent loading efficiency and work efficiency. Further, even when the power receiving and distributing equipment is installed, unnecessary protrusions are eliminated, so that the installation space can be reduced. Also, when manufacturing and inspecting power distribution equipment, the height of the lower part of the hood protrusion is often slightly higher than the line of sight, and accidents such as accidentally hitting the head during work should be prevented. You can

Next, a structural example of the roof portion of the present invention will be described.

The roof 4 is supported by the roof stand 20 at the front and rear of the box. The roof stand has a substantially L-shaped cross section, and has the same length as the width dimension of the general box body. The L-shaped vertical component is the roof support portion 2.
The portion that forms 1 and extends horizontally to the outside of the box body forms a waterproof portion 9 that is processed by rain burr. Ventilation holes for ventilation are provided in the roof support part, and the shape of the rain breeze is bent at the tip toward the bottom, so that the invading droplets escape to the bottom outer surface direction. There is.

In the power receiving / distributing equipment having the roof portion configured as described above, when the row board structure is formed by connecting several boxes, the lower space of the roof has a feature that there is no partition in the row board direction. Have. Due to this feature, some ventilation advantages arise.

That is, in power receiving and distributing equipment in which several boxes are connected to form a row board, the air that has risen due to the internal heat generation of the box part, which generates a large amount of heat, can freely move to the left and right boxes near the roof. Since it diffuses, the ventilation holes provided in the upper parts of the left and right boxes are used to discharge the particles to the outside of the box, which allows efficient ventilation.

When the fan unit 6 is started, for the same reason as described above, not only the heat generated from the box 1 in which the fan unit 6 is installed but also the heat generated in the left and right box bodies serving as a row board is considered. Since it will be possible to promote the emission of
Provided is a power receiving / distributing equipment with a high cost performance, which does not necessarily need to be provided with the fan unit 6 in all the boxes, even in the power receiving / distributing equipment in which the boxes having a large heat load are arranged in a row. be able to.

In addition, since the conventional ventilation means is detachably arranged from the outside on the eaves of the roof portion having a wind-tunnel-shaped and widthwise dimension restriction, the fan portion constituting the ventilation means is for starting. There is no choice but to make it a small size excluding parts such as the motor part and fixed part. Therefore, the fan cannot be arranged over the entire cross section of the ventilation passage extending in the width direction of the box body, and there is a drawback that it cannot be an effective exhaust means.
However, as shown in the configuration example of the present invention, the roof support portion is performed on the front and rear surfaces of the box body, and if the wind tunnel shape in the depth direction of the roof portion is not required, the interference of the space with the motor portion and the fixed portion is concerned. Without doing so, the fin portion can be arranged over the entire cross section of the ventilation path, and effective ventilation can be performed. At this time,
The roof stand described above may be integrally processed with a roof or a wall surface member such as a side plate or a door frame.

Further, since the fan portion 6 is provided inside the waterproof wall surface formed of the door and side plate of the box body 1, since the fan portion 6 is kept waterproof, It is possible to provide a favorable usage environment for a long period of time without the need for a special waterproof function and without the need of using an expensive waterproof fan.

The waterproof part needs to have the ability to withstand wind and snow and flying objects for a long period of 20 years or more, like the outer surface of the box body. Therefore, as an example, a steel plate having a plate thickness of 2.3 mm or more is used. It is manufactured as a vent hole with a diameter of φ10 to prevent the entry of small animals.
It is manufactured to the extent that the mm round bar does not fit.

The ventilation path from the fan section to the outlet on the leeward side of the fan section is provided with a shielding section for shielding the ventilation between the left and right box bodies on both end surface portions of the box body. The air sent out by can be prevented from diffusing to the eaves of the left and right boxes and from flowing back into the box, and can be released to the outside more efficiently.

Further, since the fan section is provided inside the wall surface formed of the door and side plates of the box body, the suction opening is ensured at least in the side surface and the lower surface direction of the fan section. , It is possible to suck the air in the box with the least resistance. Furthermore, because there is a suction port not only in the side direction but also in the bottom direction, not only in the transformer section, but also in the box body containing the air of the heating element section such as the low-voltage load switch and conductive section immediately below the fan section. Since the flow of air can be promoted, heat dissipation can be promoted and the temperature rise can be suppressed. As a result, it is possible to prevent malfunction of the device and reduce the size of the cubicle type switchboard of the corresponding part.

In the above-described embodiment, by using the cross flow fan for the fan portion 6, it is possible to efficiently blow air to the entire blow-out port which is full in the board width direction.

In addition, this time, although the description has been given of the ventilation hole 8 which is processed in the eaves portion 22 of the roof portion 4 as the ventilation hole portion,
The attachment of the fan part and the ventilation hole may be provided in the gutter part which is also a constituent member in the upper part of the box body.

In this case, it is preferable that the air outlets are ventilation holes arranged in the depth direction in the roof upper part and the gutter lower part or in the eaves lower part before and after the gutter.

Next, another embodiment will be described with reference to FIG. In FIG. 2, 14 is a second fan unit. This fan is arranged in the lower part of the box between the transformer, which is the main heating element, and the inner wall of the box, and when the fan is started, wind is blown along the space between the transformer and the inner wall of the box. By promoting the heat dissipation of the transformer by causing it,
Since it supports the blowing of the hot air inside the box to the first fan installed at a high position near the roof, it is possible to construct an extremely efficient blowing / ventilation system, Exhaust heat can be effectively performed. The transformer,
The same effect can be expected even if it is replaced with another heating element or a device that needs to suppress the temperature rise. Further, since the exhaust heat of the transformer 3 itself can be directly promoted by directly blowing air to the surface of the heat dissipation rib of the transformer, it is possible to increase the overload withstand capacity for an output higher than the rated value.

Generally, the power receiving equipment is used for a load of 100% or more for a short time, but the maximum usable load capacity determines the equipment capacity of the transformer 3 and the power receiving and distributing equipment. However, according to this method, it is possible to significantly extend the operation time of the equipment at 100% or more, and conventionally, it was necessary to replace the transformer 3 or the power receiving and distributing equipment itself in order to increase the power consumption. Even in such a case, it is possible to cope with the conventional equipment capacity, and it is possible to provide a transformer and a power receiving / distributing equipment with excellent cost performance.

Further, even when the fan section is composed of only the second fan section, the effect of increasing the overload withstand amount can be expected.

In FIG. 2, similarly to the above, the second fan unit 14 is located at the bottom of the transformer, and when the fan unit is started, it extends along the surface of the transformer from the bottom to the top of the transformer. It is arranged to generate wind in the.

Therefore, when the fan is started up, the wind generated along the surface of the transformer 3 effectively removes heat from the transformer, and also to the first fan unit 8 installed at a high position near the roof. An effective exhaust heat system can be constructed to support the blowing of hot air inside the box. In this case, the second fan 14 is fixed to the base portion of the power receiving and distribution facility, the leg portion of the transformer, or the lower portion of the fin. According to this method, the same effect as that of the fifth embodiment can be obtained.

[0061]

As described above, in the power receiving and distributing equipment according to the first aspect of the present invention, the ventilation hole near the roof portion, which is arranged in front of the power receiving and distributing equipment, can be used as an air passage for the fan portion. Therefore, it is possible to provide a power receiving / distributing facility with a ventilation device that is economical, safe, and has excellent workability with a very simple structure without newly providing a fan hood and a ventilation hole that are also waterproof.

In addition to the effect of claim 1, the power receiving and distributing equipment according to claim 2 of the present invention is waterproof by providing a waterproof part inside the blowout port provided on the leeward side of the fan part. It is possible to provide a power receiving and distributing facility with a ventilation device that has enhanced performance.

Further, in addition to the effect of claim 1, the power receiving and distributing equipment according to claim 3 of the present invention has the intake part of the fan part opened not only in the depth direction of the box but also in the lower part thereof.
Efficient heat dissipation can be promoted also to the heat source provided between the fan unit and the fan unit and the transformer in the lower direction of the fan unit.

In addition to the effect of claim 1, the power receiving and distributing equipment according to claim 4 uses a cross flow fan in the fan part, so that the entire rectangular ventilation hole part that has been conventionally provided is provided. Since the fan part can be configured,
Ventilation with good space efficiency can be performed.

In addition to the effect of claim 1, the power receiving and distributing equipment according to claim 5 can promote the heat dissipation of the transformer itself and support the blowing of hot air inside the box. As a result, it is possible to provide a power receiving and distributing facility with improved overload withstand capability of the transformer.

In addition to the effect of claim 1, the power distribution equipment according to claim 6 directly generates wind from the lower direction of the transformer to the upper direction along the surface of the transformer. It is possible to provide a power receiving and distributing facility in which the overload withstanding capability of the transformer is improved because it promotes the heat dissipation of the box and supports the blowing of hot air inside the box.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of power receiving and distributing equipment according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of the power distribution device according to the embodiment of the present invention.

FIG. 3 is a cross-sectional view from the fan unit to the blowing unit according to the embodiment of the present invention.

FIG. 4 is a sectional view of a cubicle type power receiving / distributing facility in Conventional Example 1.

FIG. 5 is a cross-sectional view of a cubicle type power receiving and distributing facility in Conventional Example 2.

FIG. 6 is a cross-sectional view of a cubicle type power receiving and distributing facility in which a plurality of boxes are connected.

[Explanation of symbols]

1 box 2 bottom 3 transformer 4 roof 5 wall surfaces 6 Fan section 8 outlet 9 Waterproof section 12 First fan section 13 Between the transformer and the inner wall of the box 14 Second fan section 15 High-voltage load switch 16 Low-voltage load switch 17 Conductive part 19 Lower vent 20 roof stand 21 roof support 22 Eaves

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Konosuke Kawahara             1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric             Sangyo Co., Ltd. F term (reference) 5G016 AA03 CB01 CG09 CG10 CG13

Claims (6)

[Claims] 1. A box body, a transformer installed in the box body, and a roof portion of the box body, wherein the roof portion is formed to have a slope with respect to a horizontal plane and has the slope. A power receiving and distribution facility comprising a fan portion provided inside a wall surface of the box near the high portion of the roof and near the high portion of the sloped roof portion. 2. A box body, a transformer installed in the box body, and a roof portion of the box body, wherein the roof portion is formed to have a slope with respect to a horizontal plane and has the slope. A fan part is provided inside the wall surface of the box near the high part of the roof part and near the high part of the sloped roof part, and is provided on the leeward side of the fan part. A power receiving and distributing facility comprising a mouth and a waterproof portion provided inside the outlet. 3. A box body, a transformer installed in the box body, and a roof portion of the box body, wherein the roof portion is formed to have a slope with respect to a horizontal plane and has the slope. Between the fan part inside the wall surface of the box near the high part of the roof part and near the high part of the sloped roof part, and between the fan part and the transformer Power distribution equipment with a heat source. 4. The fan unit is a cross flow fan,
The power receiving / distributing equipment according to any one of claims 1 to 3. 5. A box body, a transformer installed in the box body, and a roof portion of the box body, wherein the roof portion is formed to have a slope with respect to a horizontal plane and has the slope. A first fan portion provided inside a wall surface of the box near the high portion of the roof and near the high portion of the sloped roof portion; and the transformer. A power receiving and distribution facility including a second fan unit for generating wind along the inner wall of the box. 6. A box body, a transformer installed in the box body, and a roof portion of the box body, wherein the roof portion is formed to have a slope with respect to a horizontal plane and has the slope. A first fan portion provided inside a wall surface of the box near the high portion of the roof and near the high portion of the sloped roof portion; and A power receiving and distribution facility having a second fan unit provided near a lower portion.