JP3263637B2 - Outdoor mounting structure of power supply - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photovoltaic power generation system which is installed in a general household and can cover a part or most of the required power, and particularly to the photovoltaic power generation system, The present invention relates to an outdoor mounting structure of a power supply device for converting and supplying AC power to AC power.

[0002]

2. Description of the Related Art In recent years, power systems that use clean energy, for example, natural energy such as sunlight, wind power, and geothermal energy, have been actively developed due to the depletion of resource energy and environmental conservation problems.

[0003] Among them, a solar power generation system (hereinafter also referred to as a photovoltaic power generation system) is advantageous in that the system is small and inexpensive in terms of equipment cost and the like.
In addition, due to the development of solar cells having high power conversion rates and improved performance, power demand in ordinary households can be almost satisfied.

In order to use the photovoltaic power generation system in ordinary households, a power supply device for converting the obtained DC power into AC power and supplying power is required.

[0005] The power supply device for power conversion includes power components such as an electrolytic capacitor and a reactor for power conversion,
It incorporates a substrate on which a large number of electronic circuit components such as ICs, transistors, and resistors are wired, and an inverter device composed of circuit components such as power transistors, and further has a large number of input / output terminals and connector connectors. It has a structure in which a cooling air path provided to promote heat radiation of components and a cooling fan and the like are mounted.

[0006] The power supply device can be used both outdoors and indoors, and has good versatility.

[0007]

However, when the power supply device is installed outdoors, the weight of the power supply device is about 20 kg. Therefore, if the power supply device is directly installed on the outer wall of a house, the outer wall may be damaged. Considering that the workability should be good so that it can be freely installed in a suitable place, it is convenient to use a separate mounting plate made of a thin iron plate etc. so that the power supply unit can be mounted and supported on it. It is.

However, in this case, the problem is that the casing of the power supply unit is provided with an intake port and an exhaust port for the cooling air that enters and exits through the above-described cooling air path.

Therefore, if the power supply device is mounted on the mounting plate without care, there are cases where the power supply device is mounted in a state where the intake port and the exhaust port are blocked. May cause problems.

In view of the above circumstances, in the present invention, when the power supply device is mounted outdoors using the mounting plate, not only an easy and stable method of mounting the power supply device on the mounting plate, but also an internal portion for cooling the power supply device. It proposes a clever mounting structure that does not hinder ventilation.

[0011]

In order to achieve the above-mentioned object, the present invention has a built-in inverter for converting DC power from a solar cell or the like into AC power for home use in a housing. A cooling air is forcibly ventilated into the housing for cooling, and a power supply having an outlet for the cooling air at the back of the housing and a power supply mounted on an outer wall of a house and the like are locked. A pair of left and right locking holes provided on the rear surface of the housing of the power supply device, and a pair of left and right locking pieces provided on the wall mounting plate corresponding to the locking holes. The power supply device can be attached to a wall-mounted plate, and the wall-mounted plate is provided with an interval holding piece for abutting against a rear surface of the housing of the power supply device and holding the power supply device at a predetermined distance from the wall-mounted plate. The above-described exhaust port is Reluctant lest by being configured so as to secure a space behind is obtained by the outdoor mounting structure of the power supply device according to claim.

Further, the present invention provides an outdoor mounting structure of a power supply device in which four interval holding pieces are arranged at four positions in up, down, left and right on the wall hanging plate.

Further, according to the present invention, an exhaust port is provided on each of the left and right portions of an upper portion of a rear surface of the housing of the power supply device, and the locking holes are provided near a lower portion of the exhaust port, respectively. A rainwater intrusion prevention guard which forms a water passage for receiving intruded rainwater downward and discharges the rainwater to the outside with the exhaust hole as an outlet is provided inside the housing so as to face the exhaust hole. This is an outdoor mounting structure of a power supply device that is extended and installed.

[0014]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the power supply device 1 has a box-shaped main body that is slightly laterally long, and its housing 2 is formed of a thin steel plate. Further, the upper surface of the housing 2 is formed on an inclined surface 3 having a certain inclination angle, for example, 10 degrees or more, so that the front half thereof is lowered toward the front side. We make it easy for rain to fall.

Next, the internal structure of the power supply device 1 will be described with reference to FIGS. 2 to 14. The inside of the housing 2 which is the main body, when viewed from the front, the left and right side chambers 4, 5 and In order to cool various electric parts provided in the left and right side chambers 4 and 5 and the central chamber 6 below the central chamber 6, there are vertically formed three large chambers 6. In addition, a wind tunnel 7 having a special shape for sending cooling air by outside air is provided.

The wind tunnel 7 has a wind tunnel main body 7A having open ports 27 and 28 whose upper and left ends are open, and a front plate closed and fixed to the end open ports 28 by screws 50. 7
B, a suction port 8 is formed as a substantially square opening at a position slightly closer to the right side (front side of the housing) than the center of the front plate 7B, and slightly above the suction port 8. Has an elongated outlet 25 at a central position. From the air outlet 25, the motor 1 of the blower 9 for sucking outside air into the housing 2 and generating cooling air
The cooling air for 0M is sent, and is also sent to the left chamber 4 as cooling air.

The blower 9 is disposed below the left chamber 4 and comprises a shading motor 10M and a sirocco fan 11 driven to rotate by the motor 10M. 11A is a fan cover. Also, as shown in FIG. 11, a plurality of slit holes 14 are provided in the left area of the bottom plate 13 of the housing 2 so as to line the outside air suction port 12 of the blower.

The outlet 25 is connected to the central chamber 6.
The eaves 16 for preventing rainwater that has entered the wind tunnel 7 from the cooling air exhaust port 32 (see FIG. 13) on the back surface of the blower from entering the motor 10M of the blower from the outlet 25, As shown in FIG. 10, it is provided so as to protrude inward at an angle of about 45 degrees. The eaves 16 provided so as to cover the air outlet 25 extend downward from the lower end of the mouth of the air outlet 25, so that the effect of preventing rain intrusion becomes higher. Also, the rainwater that has entered the wind tunnel 7 easily flows downward due to the inclined surfaces 26A, 26B, 26C on the inner surface of the wind tunnel. Finally, the water is discharged from a round opening 29A provided on the bottom surface of the wind tunnel 7 and further discharged from a drain port 29 (see FIG. 11) of the bottom plate 13 of the housing 2. A rectangular rod-shaped heat insulating material 8A is bent and attached to the periphery of the suction air port 8 of the wind tunnel 7.

The central chamber 6 further includes a front chamber 6A.
And the rear room 6B. And the front room 6A
As shown in FIG. 3, a board (chassis) 51 on which IC components, transistors, resistors, and various other circuit components are mounted is erected and incorporated therein.

As shown in FIGS. 2, 3 and 5, a power conversion element such as a power transistor 17 and a drive component thereof are mounted on the front side of the rear chamber 6B, and a radiating fin 18F is mounted on the rear side. Are stored integrally with each other.

Further, input / output terminals of the solar cell and the power supply device 1 and input / output terminals of the home power wiring and the power supply device are provided at a lower portion of the right room 5 adjacent to the right side of the central room 6. Terminal board with many terminals such as output terminals (not shown)
Are housed in the recesses and are closed by a removable lid 21 (see FIG. 1). Above the noise filter 2 is a noise filter 2 composed of a coil (L) and a capacitor (C).
2 are stored.

As shown in FIG. 18, a plurality of reactors 19 having different impedances for absorbing noise such as harmonics generated at the time of power conversion are provided in the left chamber 4 in the central chamber 6 and the left chamber 4. Are vertically installed at an appropriate interval in the vertical direction on the partition wall 6L for partitioning the partition wall. This is because when the wind that cools the shading motor 10M of the blower 9 flows upward from the bottom of the left chamber 4 to cool the plurality of reactors 19, for example, the reactor 19 has a large resistance to the wind. In order to increase the contact of the wind with any reactor and improve cooling by installing the reactor 19 at an angle to the wind, reducing the contact with the wind, lowering the resistance and improving the ventilation, as compared to the case where they are orthogonal to each other. It is. In the space 15 below the wind tunnel 7, a plurality of condensers 23 of different thickness
And are attached and held together.

As described above, the inside of the housing 2 of the power supply device 1 is divided into a plurality of chambers 4, 5, and 6, and various electric components are installed in each of the chambers. Therefore, it is necessary to take in the outside air and flow the cooling air to the central chamber 6 and the left and right side chambers 4 and 5 for cooling.

Therefore, the wind tunnel 7 supplies the wind coming from the suction port 8 to the central chamber 6 through the opening 27 above the same, and the left chamber 4 and the blower 9 from the discharge port 25 on the left side thereof.
To the shading motor 10M with a required air volume. However, since the rear chamber 6B of the central chamber 6 contains the substrate 18 which is a component generating more heat, such as the power transistor 17, the bottom plate 5 shown in FIG.
3 is interposed between the central chamber 6 and the wind tunnel 7 and its bottom plate 53
A large amount of air is blown into the radiating fins 18F of the rear chamber 6B from the rectangular air outlet 54 formed in the rear chamber 6B. The bottom plate 53 is also provided with one ventilation slit hole 55 in a position in parallel with the ventilation port 54 so as to ventilate the power transistor 17 itself.

Further, a gap 9 at the lower part on both sides of the central chamber 6
From 0 and 90, a part of the cooling air from the rear chamber 6B is sent to the left and right side chambers 4 and 5. This cooling air causes the reactor 19 and the noise filter 22
Is cooled. Incidentally, reference numeral 92 denotes a heat insulating material, which is inserted into the assembly surface of the housing.

The air passage structure as described above is formed inside the power supply device 1. Therefore, when the blower 9 is driven, the outside air is sucked in from the slit hole 14 on the bottom surface of the housing 2 by the rotation of the sirocco fan 11. After entering the wind tunnel 7 through the suction vent 8, the cooling air blown from the two discharge vents 25, 27 and a part of the cooling air are added or taken in, and are introduced into the respective chambers 4, 5, 6. In this case, the cooling air flows forcibly, thereby effectively cooling the components.

The cooling air after passing through each of the chambers 4, 5, and 6 is exhausted to the outside. The exhaust ports of the left and right chambers 4 and 5 are shown in FIG. As described above, three slit holes 3 provided vertically in the upper portion of the rear wall 2D are provided.
Exhaust outlets 30 and 31 composed of 0S and 31S, and in the central chamber 6, at appropriate intervals so as to be aligned in a horizontal line on the upper part of the rear wall 2D corresponding to the rear chamber 6B. Exhaust port 3 composed of four slit holes 32S provided
2.

Reference numeral 60 denotes a breaker device which performs a power-off operation when the power used exceeds the output power in the power supply device 1 having the above-described internal structure. As shown in FIG.
The power supply device 1 is provided at the right side of the bottom of the power supply device 1 at a position closer to the front.

The mounting structure of the breaker 60 will be described.
As shown in FIG. 11, the bottom plate 13 of the power supply device 1 is an insertion hole for mounting the breaker 60, and is a circular operation hole 61 into which a finger enters when the breaker 60 that has been shut off is returned. Are formed. The breaker 60 has a cylindrical shape, and a large-diameter skirt portion 60
b. Further, at the bottom end of the breaker 60, a push operation type breaker return switch 62S is provided.

A concave portion 63 is formed at the bottom of the power supply device 1 and communicates with the operation hole 61 and is formed by being depressed upward at a required height. Therefore, the recess 63 exists at the bottom of the power supply device 1 like a raised bottom, and the recess 63
A circular mounting hole 64 for mounting the cylindrical breaker 60 is formed in the upper bottom.

A ring-shaped eyelet 65 made of rubber is fitted and fixed to the inner peripheral edge of the circular mounting hole 64.
Then, when the breaker 60 is inserted from below through the operation hole 61 into the mounting hole 64 in which the eyelet 65 is fitted, the breaker 60 is press-fitted into the eyelet 65 and is fixedly attached to the back of the recess 63. You. In this case, breaker 6
The rubber eyelets 65 in which 0 is fitted serve as a waterproof member. When the breaker 60 is mounted, the shoulder of the skirt portion 60 b of the breaker 60 is
Positioning is performed by hitting one edge. Accordingly, the breaker 60 has a structure in which the breaker 60 is mounted at a position slightly deeper (floating) above the housing bottom plate 13, so that even if the power supply device 1 is installed outdoors such as by mounting it on an outer wall of a house or the like, It is possible to make it difficult for rainwater to enter from the bottom in the case of rain, etc.
Since the rainwater is effectively prevented from entering from the mounting portion, the waterproofness is further improved, and the failure of the breaker 60 or the short-circuit of the internal electric component and the failure of the power supply device 1 can be prevented.

If the breaker 60 provided at the bottom of the housing of the power supply unit 1 becomes excessively use of electric power and the power is cut off after the waterproof structure is provided in this manner, the operation is reduced when the operation load is reduced. A finger (indicated by an arrow) is inserted from below through the hole 61, and the breaker return switch 6 in the concave portion 63 is inserted.
By pressing 2S, the breaker 60 can be easily returned.

The place where the breaker 60 is provided as described above is as follows.
Since it is the bottom of the power supply device 1, it is hard to see, and its location can only be known by a specific person such as the user of the power supply device 1, thus avoiding mischievous operations.

In order to return the breaker 60 without exposing the breaker 60, the concave portion 6 recessed into the bottom of the bottom is required.
Since the gesture is that the finger is depressed intentionally into 3, the device can be prevented from operating only with a slight touch, and malfunction can be prevented.

The box-shaped power supply device 1 having the above-described structure can be used outdoors.
In this case, if the power supply device 1 is directly attached to an outer wall or the like, it is disadvantageous in that the maintenance property and the mounting change cannot be easily performed.
A wall-mounted plate 33 as shown in FIG.

The fixing of the power supply device 1 to the wall hanging plate 33 is performed by hooking a locking hole provided on the power supply device 1 to a locking piece provided on the wall hanging plate 33.

For this purpose, first, the rear wall 2D of the power supply device 1
As shown in FIG. 13, a rectangular locking hole 35
A and 35B are formed one each on the left and right. The pair of locking holes 35A and 35B are cut out and provided like window holes at positions slightly below the left and right exhaust ports 30 and 31 communicating with the side chambers 4 and 5, respectively. Hole 35
A and 35B have an engagement protruding piece 36 whose upper side is cut upright at a right angle to the rear and slightly traveled rearward.

On the other hand, on the wall mounting plate 33, the locking holes 35A and 35B of the power supply device 1 correspond to the locking holes 35A and 35B.
Locking pieces 37, 37, which are slightly smaller than the widths of A and 35B and whose tips are bent upward to form hooks 37f, are provided on both left and right sides.

Accordingly, the power supply device 1 is provided with the locking holes 35A, 35B on the left and right sides of the
If it is inserted from above in accordance with 7, 37, each locking piece 3
Hook 37f at the tip of 7, 37 and locking holes 35A, 35B
Is stopped by the engagement with the engaging projection 36, and is suspended.

However, at this time, if the rear wall 2D of the power supply device 1 is mounted in close contact with the wall hanging plate 33, the left and right exhaust ports 30 and 31 are closed, and cooling of the electric components inside the power supply device 1 is performed. Therefore, a plurality of space-retaining pieces 38 for mounting the power supply device 1 with a predetermined space between the exhaust ports 30 and 31 and the wall-mounting plate 33 are provided in the direction of the wall-mounting plate 33. Provided.

That is, the spacing member 38 is arranged as shown in FIG.
As shown in the figure, the projections protrude from the locking pieces 37, 37 by a length shorter by the dimension of b, maintain a constant separation distance G from the wall hanging plate 33, and have a contact portion 38m with the power supply device 1 at the tip. It is bent.

The spacing member 38 is located slightly below the left and right locking pieces 37, 37,
The upper and lower spacing members 38 are provided on the left and right sides of the lower portion of the wall hanging plate 33 in correspondence with the upper spacing members 38, so that the four spacing members 38 are provided at four locations on the upper, lower, left and right sides of the wall hanging plate 33. It has become.

In the present embodiment, the spacing members 38 are provided side by side at the upper and lower positions corresponding to the left and right locking pieces 37, 37. However, the present invention is not limited to this arrangement. Even if the piece 38 is displaced from the left and right locking pieces 37, 37, it is sufficient that the piece 38 be in contact with the housing rear surface 2D of the power supply device 1 at four upper and lower locations. Further, four or more spacing members 38 may be arranged at appropriate intervals and at even positions.

Therefore, since the wall mounting plate 33 has the spacing members 38 on four sides in this way, the power supply device is connected to the locking pieces 3.
7 and 37, when installed on the back of the power supply 2
D is stably received by the abutment portion 38m of the spacing member 38, and is provided between the wall holding plate 33 and the exhaust ports 30, 3
1 is mounted in a state where a certain space G is kept so as not to block the space 1. For this reason, the cooling air is smoothly exhausted from the exhaust ports 30 and 31 without hindrance, and the built-in electric components can be sufficiently cooled, and a good cooling effect can be obtained.

Although rain enters through the exhaust ports 30 and 31, even if the rain enters the inside of the power supply device 1, the rainwater that has entered in cooperation with the locking holes 35 A and 35 B described above is removed. Rain intrusion prevention guards 40, which function so as to be able to flow out of the power supply device 1, are fixed to the inner surface of the rear surface 2D of the power supply device so as to face the left and right exhaust ports 30, 31 respectively.

That is, the rain intrusion prevention guard 40
Is formed by bending an iron plate or the like into a U-shaped cross section to form a concave portion serving as a water passage 41 as described later, and the concave portion has a bottom surface 4.
1b, the bottom is closed, and the top is also closed. Then, when mounting the rain intrusion prevention guard 40, the bottom surface 41b of the concave portion and the lower side 35Y of the locking holes 35A, 35B are set at the same height, and then the mounting screws (represented by x marks) are used. Left and right mounting sides 40
m and the lower mounting side 40n are mounted and fixed.

The guard 4 for preventing rain intrusion thus attached
The structure of the mounting portion 0 is as shown in FIG. 17, whereby the recess of the rain intrusion prevention guard 40 has the rain invading as shown by the arrow due to the opposing inner surface 2 d of the back wall of the power supply device 1. r becomes a water passage 41 that guides downward, and hits the inner wall 40b of the rain intrusion prevention guard 40,
It is transmitted by hitting the inner surface 2d of the back wall and reaches the lower part.

Then, the rainwater r that has reached the bottom surface 41b is disengaged from the locking holes 35A, 3A communicating with the outside via the bottom surface 41b.
5B serves as an outlet for the invading rainwater, so that rain can flow out. As a result, the rain is exhaust 3
Even if they enter from 0 and 31, they do not enter into the inside of the power supply device, and it is possible to prevent the power supply device 1 from being damaged due to a short circuit or the like.

With the above configuration, the housing 2 of the power supply device 1 can be hung as long as the locking holes 35A, 35B on its back are engaged with the locking pieces 37, 37 of the wall hanging plate 33. Can be easily installed outdoors.

The wall-mounting plate 38 has a spacing member 38, and even if the housing of the power supply is mounted on the wall-mounting plate 38, a space G is left between the housing and the wall-mounting plate 38, The exhaust ports 30 and 31 on the rear surface 2D of the housing 1
8 is not blocked. Therefore, the outside air is sucked in by the fan, and the cooling air that flows to cool the inside of the housing 2 is:
It can smoothly go out of the exhaust ports 30 and 31 and a sufficient cooling effect can be secured.

Further, the spacing between the power supply device 1 and the wall hanging plate 38 can be maintained and can be hung and fixed in a stable state by the space holding pieces 38 arranged at four positions on the left, right, upper and lower sides of the wall hanging plate 38.

Even if rainwater enters the power supply device 1 through the exhaust ports 30 and 31, the rainwater intrusion prevention guard 40 receives the rainwater and prevents further intrusion into the interior. Since the water passage 43 is formed such that the locking holes 35A and 35B serve as rainwater outlets, the infiltrating rainwater is finally drained to the outside. Thereby, the occurrence of the failure of the power supply device 1 due to rainwater is also eliminated.

[0054]

As described above, according to the present invention, when the power supply device is mounted on the outside of a house or the like by using a wall hanging plate, the housing is provided with the locking hole provided on the back thereof and the wall hanging plate. It can be easily installed outdoors by engaging with the locking pieces.

Further, the space holding piece provided on the wall hanging plate keeps a space behind the housing of the mounted power supply device, and can be mounted so that the exhaust port on the rear surface of the housing is not blocked. In this case, the power supply unit can be sufficiently cooled and the inside of the power supply unit can be sufficiently cooled, and the DC / AC power conversion operation by the inverter unit in the housing can be performed stably and the reliability and durability can be improved. Be able to provide.

Further, by providing the space holding pieces provided on the wall hanging plate at four places, that is, up, down, left and right, the power supply device can be stably formed.
It can be mounted on the wall hanging plate while keeping the space.

Furthermore, even if rainwater enters the power supply through the exhaust port, a rainwater intrusion prevention guard capable of forming a water passage is provided opposite the exhaust port, and the guard member lowers the rainwater. , And the bottom thereof is connected to the locking hole, so that rainwater can be finally drained outside using the locking hole as an outlet. Therefore, it is possible to reliably prevent rainwater from penetrating into the deep part of the power supply device, to completely waterproof the power supply device, and to install the power supply device outdoors with confidence.

[Brief description of the drawings]

FIG. 1 is an overall view of a power supply device of the present invention, FIG.
Figures b and c are left and right side views, and Figure d is a top view.

FIG. 2 is an internal structural view of the power supply device of the present invention in which the power supply device is divided into three rooms of a central room including left and right side chambers and two front and rear rooms and has a breaker at a bottom portion. It is a front view explaining the structure in the back room in which the power transistor is stored.

FIG. 3 is a top structural view of the power supply device shown together with a substrate incorporated in a front chamber.

FIG. 4 is an internal structural view of the power supply device, and is a front view illustrating a structure of a front room in which an electric board on which various electric circuit components such as ICs are mounted is housed in two front and rear chambers.

FIG. 5 is a top structural view of the power supply device.

FIG. 6 is a view showing a mounting structure of a capacitor in a lower portion of the inside of the housing.

FIG. 7 is a front view of a wind tunnel for sending cooling air to each of the three chambers of the power supply device.

FIG. 8 is a left side view of the wind tunnel.

FIG. 9 is a top view of the wind tunnel.

FIG. 10 is a side sectional view of a main part of an air outlet of the wind tunnel having a rain intrusion prevention eave.

FIG. 11 is a bottom view of the power supply device in which an outside air suction port communicating with the wind tunnel is formed.

FIG. 12 is a plan view showing a cooling air outlet formed in a lower bottom portion of the central chamber.

FIG. 13 is a rear view of the power supply device in which an exhaust port through which cooling air that has passed through each of the three chambers of the power supply device is discharged is formed, and a sectional view taken along the line AA showing the structure of the exhaust port portion.

FIG. 14 is a rear view of the back wall of the power supply, showing a state in which rainwater intrusion prevention guards for letting out rainwater entering through the exhaust outlets in the left and right side chambers to the outside of the power supply are provided inside the exhaust outlet. FIG.

FIG. 15 is an external view of a wall hanging plate for attaching the power supply device to an outdoor wall surface or the like.

FIG. 16 shows a case where a power supply device is mounted on an outer wall of a house using a wall hanging plate,
FIG. 4 is a mounting structure diagram of the power supply device of the present invention, which enables installation at a distance so as not to block the exhaust port.

FIG. 17 is an explanatory view showing an aspect in which rainwater intruding by a rainwater intrusion prevention guard flows out when a power supply device is attached.

FIG. 18 is a schematic configuration side view of a left ventricle in which a reactor is installed at an angle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power supply device 4, 5 Left and right side chambers 6 Central chamber 7 Wind tunnel 8 Suction air port 9 Blower 14 Suction port 25 Air outlet 27 Upper opening 30, 31 Exhaust port 33 Wall mounting plate 37 Lock hole 38 Space holding piece 40 Rainwater intrusion prevention guard

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-9-247955 (JP, A) JP-A-9-237992 (JP, A) JP-A-63-240099 (JP, A) 32592 (JP, U) Shokai Sho 59-81081 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) H02M 7/48 G05F 1/67 H01L 31/04 H05K 5/02

Claims (3)

(57) [Claims] An inverter for converting DC power from a solar cell or the like into AC power for home use is built in a housing, and cooling air is forcibly passed through the housing to cool the inverter. And the cooling air outlet
On the power supply unit with the
A pair of left and right locking holes provided on the rear surface of the housing of the power supply device, and a pair of right and left locking holes provided on the wall mounting plate corresponding to the locking holes. The power supply device can be attached to the wall hanging plate by engaging with the locking piece, and the wall hanging plate comes into contact with the rear surface of the housing of the power supply device to hold the power supply device at a predetermined distance from the wall hanging plate. Characterized in that the space holding piece is provided, and a space is provided behind the space holding piece so that the exhaust port is not blocked. 2. The outdoor mounting structure for a power supply device according to claim 1, wherein four space holding pieces are arranged on the wall hanging plate at four positions, up, down, left, and right. 3. An exhaust port is provided on each of left and right portions of an upper portion of a rear surface of the housing of the power supply device, and the locking holes are provided near the lower portion of the exhaust port, respectively. Form a water channel that drains down,
The rainwater intrusion prevention guard that discharges the rainwater to the outside using the exhaust hole as an outlet is extended and installed inside the housing so as to face the exhaust hole. Outdoor mounting structure of power supply unit.