JP6931822B2 - electrical equipment - Google Patents

Description

The present invention relates to electrical equipment, and more particularly to electrical equipment for accommodating electrical equipment.

Electronic devices installed outdoors are exposed to rain in rainy weather. Therefore, the housing of such an electronic device has a waterproof structure (see, for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 2015-12140

Equipment installed outdoors is required to be waterproof, but not only waterproofness but also a structure suitable for outdoor use is required.

The present invention has been made in view of such a situation, and an object of the present invention is to provide an electric facility having a structure suitable for outdoors.

In order to solve the above problems, the electrical equipment of an embodiment of the present invention includes a main body case for accommodating electrical equipment, a front cover arranged in front of the main body case, and a rear cover arranged in the rear of the main body case. The cover is detachably arranged on the top surface of the rear cover and has a lower thermal conductivity than the rear cover. An opening area is arranged on the top surface of the rear cover, a plurality of holes communicating with at least a part of the opening area are arranged on the detachable cover, and the detachable cover has a first region, a second region, and a first. A boundary region is provided between the region and the second region, and a plurality of holes are arranged in each of the first region and the second region, and the boundary region has no holes and is a boundary. The width in the region, and the width between the first region and the second region, is larger than the distance between the two adjacent holes.
Another aspect of the invention is also electrical equipment. This device is detachably arranged on the main body case for storing electrical equipment, the front cover arranged in front of the main body case, the rear cover arranged behind the main body case, and the top surface of the rear cover. It includes a removable cover that has lower thermal conductivity than the rear cover. An opening area is arranged on the top surface of the rear cover, a plurality of holes communicating with at least a part of the opening area are arranged on the detachable cover, and the detachable cover has a first region, a second region, and a first. A boundary region is provided between the region and the second region, and a plurality of holes are arranged in each of the first region and the second region, and the boundary region has no holes and is a boundary. The width in the region, and the width between the first region and the second region is larger than the distance between the two adjacent holes, and the opening region on the top surface of the rear cover is in the first region of the removable cover. A first opening region facing each other and a second opening region facing the second region of the removable cover are included, and the top surface of the rear cover is arranged between the first opening region and the second opening region and is detachable. A boundary plate facing the boundary region of the cover is arranged, and a claw portion that meshes with the boundary plate of the rear surface cover is provided on the surface of the removable cover on the top surface side of the rear surface cover.

According to the present invention, it is possible to provide electrical equipment having a structure suitable for outdoors.

It is a perspective view which shows the structure of the electric equipment which concerns on Example 1 of this invention. It is another perspective view which shows the structure of the electrical equipment of FIG. It is an exploded perspective view which shows the structure of the electric equipment of FIG. It is a side view which shows the structure of the electric equipment of FIG. It is an exploded side view which shows the structure of the electric equipment of FIG. It is a front view which shows the structure of the electric equipment of FIG. It is another exploded perspective view which shows the structure of the electric equipment of FIG. 8 (a)-(b) are perspective views showing the structures of the main body case, the piping cover, and the wiring cover in the electrical equipment of FIG. 1. It is a perspective view which shows the structure of the pipe cover of FIG. 8 (a)-(b). It is a perspective view which shows the structure of the main body case in the electric equipment of FIG. It is a perspective view which shows the structure of the 1st heat sink of FIG. 8 (a)-(b). 8 (a)-(b) is another perspective view showing the structure of the first heat sink. It is still another perspective view which shows the structure of the 1st heat sink of FIG. 8 (a)-(b). It is a perspective view which shows the structure of the 2nd heat sink of FIG. 8A-(b). 15 (a)-(b) are views showing the structure of the electrical equipment according to the second embodiment of the present invention. 16 (a)-(b) is another diagram showing the structure of the electrical equipment of FIGS. 15 (a)-(b). It is a perspective view which shows the structure of the electric equipment which concerns on Example 3 of this invention. 18 (a)-(b) are exploded perspective views showing the structure of the electrical equipment of FIG. It is an exploded perspective view which shows the structure of the rear cover and the detachable cover of FIG.

(Example 1)
An outline of the examples will be described before the examples of the present invention are specifically described. The first embodiment relates to electrical equipment installed outdoors. An example of electrical equipment is a power converter. Electrical equipment installed outdoors is required to be waterproof in order to suppress the effects of rain. Furthermore, such electrical equipment is placed in the following situations.
(I) Outdoors, warm air containing water vapor is easily cooled by electrical equipment. As a result, dew condensation may occur inside the electrical equipment. Moisture due to dew condensation adheres to the electrical equipment stored in the electrical equipment, which causes the electrical equipment to break down.
(Ii) Outdoors, the temperature inside the electrical equipment tends to rise due to sunlight. For electrical equipment housed in electrical equipment, it is not desirable for the temperature to rise too high.
(Iii) By being installed outdoors, electrical equipment becomes noticeable. If the mechanical structure of the electrical equipment is exposed, it will spoil the appearance.

(Iv) It is effective to make the electric equipment a sealed structure in order to improve the waterproof property, but the heat dissipation of the electric equipment is lowered by the sealed structure. On the other hand, the electric equipment housed in the electric equipment generates heat by the operation, so that heat dissipation is required.
(V) Piping or wiring is inserted into electrical equipment from the outside. The insertion part is closer to the exposure than the other parts, and water can easily enter even if it is not directly exposed to rain. If water enters the electrical equipment from the insertion part, it may cause the electrical equipment housed in the electrical equipment to break down.
(Vi) Outdoors, dust may be trapped in the air. If dust enters the electrical equipment, it may cause the electrical equipment housed in the electrical equipment to break down.
(Vii) Since the temperature and the weather change greatly outdoors, the waterproof property of the electrical equipment tends to deteriorate. The greater the deterioration of waterproofness, the greater the burden of maintenance on electrical equipment.
(Viii) Since the installation work is outdoors, the ease of installation affects the workability.
(Ix) Electrical equipment that improves waterproofness tends to lead to an increase in manufacturing costs.
It can be said that a structure that improves these situations is a structure suitable for the outdoors. In this embodiment, an electric facility having a structure suitable for outdoors will be described.

In the following description, "parallel" and "vertical" include not only perfectly parallel and vertical, but also cases where they are deviated from parallel and vertical within the margin of error. In addition, "abbreviation" means that they are the same in an approximate range. In the following, in order to clarify the description, (1) overall structure, (2) piping structure and wiring structure, (3) main body case structure, and (4) electrical equipment structure will be described in this order.

(1) Overall Structure The overall structure of the electrical equipment 1000 will be described with reference to FIGS. 1 to 6. As shown in FIG. 1, a Cartesian coordinate system including an x-axis, a y-axis, and a z-axis is defined. The x-axis and y-axis are orthogonal to each other in the bottom surface of the electrical equipment 1000. The z-axis is perpendicular to the x-axis and the y-axis and extends in the height (vertical) direction of the electrical equipment 1000. Further, the positive directions of the x-axis, the y-axis, and the z-axis are defined in the direction of the arrow in FIG. 1, and the negative direction is defined in the direction opposite to the arrow. The positive side of the x-axis is the "front side" or "front side", the negative side of the x-axis is the "rear side" or "back side", and the positive side of the z-axis is the "upper side" or "top side". , The negative side of the z-axis may be referred to as the "lower side" or the "bottom side". Further, the y-axis direction may be referred to as "side surface side".

1 and 2 are perspective views showing the structure of the electric equipment 1000 according to the first embodiment of the present invention, FIG. 1 is a structure of the electric equipment 1000 viewed from the front side, and FIG. 2 shows the electric equipment 1000. It is a structure seen from the back side. FIG. 3 is an exploded perspective view showing the structure of the electrical equipment 1000, and is an exploded perspective view in the same direction as FIG. FIG. 4 is a side view showing the structure of the electric equipment 1000, and FIG. 5 is an exploded side view showing the structure of the electric equipment 1000 in the same direction as that of FIG. Note that FIG. 6 will be described later. Here, a case where the electric equipment 1000 is installed outdoors will be illustrated.

The electrical equipment 1000 includes a main body case 100, a front cover 200, a rear cover 300, a piping cover 400, and a wiring cover 500. The main body case 100 includes a main body case top surface 110, a main body flange 112, a main body case side surface 116, a handle portion 118, a main body case back 122, a bottom cover 124, a main body case bottom surface 126, a storage space 150, an opening space 152, an inner wall 154, and an inside. Includes a case 160, an inner case top surface 162, an inner case side surface 168, and an electrical equipment cover 180. The front cover 200 includes a front cover top surface 210, a heat dissipation port 212, a front cover side surface 216, and a front cover front surface 220. The rear cover 300 includes a rear cover top surface 310, a rear flange 312, a notch 314, a rear cover side surface 316, a rear cover back surface 322, a back cover bottom surface 326, a rear surface opening 328, a shielding plate 350, and a slit 360.

The components of the main body case 100, the front cover 200, the rear cover 300, and the wiring cover 500 are connected by screws, welding, an adhesive, or the like, but known techniques may be used. The explanation is omitted. The same applies to the connection between the main body case 100, the front cover 200, the rear cover 300, the piping cover 400, and the wiring cover 500. Further, a plurality of components may be integrally formed.

The main body case 100 is formed in a box shape that opens on the positive side of the x-axis. Here, the main body case top surface 110 is arranged on the positive direction side of the z-axis, the main body case side surfaces 116 are arranged on both sides in the y-axis direction, and the main body case back surface 122 is arranged on the negative direction side of the x-axis. , The bottom surface 126 of the main body case is arranged on the negative side of the z-axis. Further, the bottom cover 124 is arranged on the negative direction side of the z-axis of the bottom surface 126 of the main body case, and the bottom cover 124 supports the main body case 100 from the negative direction side of the z-axis. A handle 118 that can be gripped by a user is provided on the side surface 116 of each main body case. Inside the box-shaped main body case 100, an inner wall 154 having a plate shape extending in the y-axis direction is arranged. The inner wall 154 separates the inside of the main body case 100 into a storage space 150 on the positive direction side of the z-axis and an opening space 152 on the negative direction side of the z-axis.

An inner case 160 is arranged in the storage space 150. Like the main body case 100, the inner case 160 is formed in a box shape that opens in the positive direction of the x-axis. The details of the structure of the inner case 160 will be described later, but the inner case top surface 162 is arranged on the positive side of the z-axis, and the inner case side surfaces 168 are arranged on both sides in the y-axis direction. Further, the negative side of the inner case 160 on the x-axis is closed by the back surface 122 of the main body case. The inner case 160 houses electrical equipment. An example of an electric device is a conversion circuit that converts DC power into AC power. The details of the conversion circuit will be described later, but it can be said that this is a circuit provided with a heat generating element. Further, the opening portion of the inner case 160 is closed by the electric device lid 180 so as to be openable and closable. The electric device lid 180 is formed in a plate shape having a rectangular shape on the yz plane. A piping cover 400 and a wiring cover 500 are connected to the opening space 152. The piping cover 400 and the wiring cover 500 will be described later.

The front cover 200 is arranged in front of the main body case 100, that is, on the positive direction side of the x-axis so as to cover the opening in the main body case 100. In the front cover 200, the front cover front 220 for covering the opening in the main body case 100 is formed in a plate shape extending in the yz plane, and is formed on the front cover top surface 210 on the positive direction side of the z-axis and the y-axis. It is surrounded by the front cover side surfaces 216 on both sides. A plurality of heat dissipation ports 212 are provided on both ends of the front cover top surface 210 in the y-axis direction. The front cover 200 is attached to the main body case 100 from the positive direction side of the x-axis as shown in FIGS. 1, 2, and 4. Here, the front cover 200 is shown transparently in order to make the configuration of the main body case 100 easy to understand, but the main body case 100 is actually colored.

The rear cover 300 is arranged behind the main body case 100, that is, on the negative side of the x-axis so as to cover the back surface 122 of the main body case. In the rear cover 300, the rear cover back surface 322 for covering the main body case back surface 122 is formed in a plate shape extending in the yz plane, and the rear surface cover top surface 310 on the positive direction side of the z-axis and the y-axis both directions. It is surrounded by the side surface 316 of the rear cover on the side and the bottom surface 326 of the back cover on the negative side of the z-axis. A plurality of slits 360 are provided on the top surface 310 of the rear cover and the bottom surface 326 of the back cover. The slit 360 is used to dissipate heat against heat generated by the main body case 100. Further, a rear surface opening 328 and a shielding plate 350 are provided on the rear surface cover back surface 322. Since the rear cover 300 is attached to the main body case 100 from the negative direction of the x-axis as shown in FIGS. 1, 2, and 4, the main body case 100 is surrounded by the front cover 200 and the rear cover 300. As a result, the main body case 100 is not exposed, and it is possible to prevent the appearance from being spoiled regardless of the configuration of the main body case 100. Further, the surface on the negative side of the x-axis of the rear surface cover back surface 322 is fixed to a standing wall of a building or the like (not shown).

When the front cover 200 and the rear cover 300 are attached to the main body case 100, the front cover top surface 210 is arranged above the main body case top surface 110 and the rear cover top surface 310, that is, on the positive side of the z-axis. NS. Here, since the width of the front cover top surface 210 in the x-axis direction is wider than the width of the main body case top surface 110 in the x-axis direction, the main body case top surface 110 is covered by the front cover top surface 210. That is, in the z-axis direction, a double structure of the front cover top surface 210 and the main body case top surface 110 is formed. The double structure improves waterproofness, and the presence of an air layer between the top surface 210 of the front cover and the top surface 110 of the main body case suppresses the occurrence of dew condensation and raises the temperature inside the main body case 100 due to sunlight. It is suppressed. When the x-axis direction of the front cover top surface 210 is narrower than the width of the main body case top surface 110 in the x-axis direction, the main body case top surface 110 is covered by the front cover top surface 210 and the rear cover top surface 310. You may.

Further, a main body flange 112 projecting toward the front cover top surface 210 is provided on the edge of the main body case top surface 110 on the positive direction side of the x-axis. The main body flange 112 fills the gap between the front cover top surface 210 and the main body case top surface 110. The main body flange 112 is also provided on the side surface 116 of the main body case. The main body flange 112 projects toward the front cover side surface 216 and fills a gap between the main body case side surface 116 and the front cover side surface 216. This also leads to improved waterproofness.

A rear flange 312 projecting toward the front cover top 210 is provided at the edge of the rear cover top 310 on the positive direction side of the x-axis. The rear flange 312 fills the gap between the front cover top 210 and the rear cover top 310. This also leads to improved waterproofness. The rear flange 312 is provided with a plurality of notched portions 314 having a recessed shape. A heat radiating port may be provided instead of the notch 314. As a result, even if heat is generated inside the main body case 100, heat dissipation is promoted.

FIG. 6 is a front view showing the structure of the electrical equipment 1000. The main body case 100 in the electrical equipment 1000 further includes a terminal portion 156. A plurality of terminal portions 156 are provided on the opening space 152 side of the inner wall 154. The terminal portion 156 is a terminal for connecting a pipe or wiring inserted into the electric equipment 1000 from the outside. Here, piping and wiring correspond to electric wires. In the following, the illustration of piping and wiring will be omitted. Through such a connection, electric power is input and output between the electric device housed in the electric facility 1000 and the outside. Since the terminal portion 156 is arranged on the opening space 152 side, no pipe or wiring is inserted into the storage space 150. This eliminates the need to provide a hole for the pipe or wiring in the inner wall 154, and prevents water or dust from entering the storage space 150.

As described above, heat dissipation ports 212 are provided on both ends of the front cover top surface 210 in the y-axis direction. The heat radiating port 212 is arranged on the positive direction side of the z-axis of the space sandwiched between the main body case side surface 116 and the front cover side surface 216. As a result, even if heat is generated inside the main body case 100, heat is dissipated through the air path 800 formed in the space.

The handle portion 118 is provided on the side surface 116 of the main body case so as to be arranged in the space sandwiched between the side surface 116 of the main body case and the side surface 216 of the front cover. The side surface 116 of the main body case and the side surface 216 of the front cover are provided apart from each other, and the side surface 216 of the front cover has a certain length in the z-axis direction. Therefore, the front cover side surface 216 tends to bend toward the main body case 100, but the handle portion 118 supports the front cover side surface 216 to suppress the bending.

(2) Piping Structure and Wiring Structure FIG. 7 is another exploded perspective view showing the structure of the electrical equipment 1000, and is an exploded perspective view in the same direction as FIG. 8 (a)-(b) are perspective views showing the structures of the main body case 100, the piping cover 400, and the wiring cover 500 in the electrical equipment 1000, and are further exploded perspective views of the main body case 100 in FIG. 7. The main body case 100 further includes a bottom opening 128, a main body opening 130, a fixing bracket 132, and a piping hole 134. The piping cover 400 includes a piping hole 402. The wiring cover 500 includes a first flange 510, a second flange 512, a third flange 514, a cover portion 520, and a sealing groove portion 530. Further, a first heat sink 600 and a second heat sink 700 are arranged on the back surface 122 of the main body case.

The bottom surface 126 of the main body case is provided with a bottom surface opening 128 and a plurality of piping holes 134. The bottom opening 128 opens in a rectangular shape on the positive side of the y-axis of the bottom 126 of the main body case. The bottom opening 128 is provided for inserting a pipe (not shown) from below the main body case 100 into the main body case 100. Further, a plurality of piping holes 134 are provided in the portion of the bottom surface 126 of the main body case where the bottom surface opening 128 is not provided. A plurality of piping holes 134 are also provided for inserting piping from below the main body case 100 into the main body case 100. Since one pipe is passed through one pipe hole 134, the diameter of the pipe hole 134 is set to a size corresponding to the diameter of the pipe and larger than the diameter of the pipe.

The piping cover 400 is attached to the bottom surface 126 of the main body case so as to cover the bottom surface opening 128 from below. The piping cover 400 is formed in a plate shape that spreads in the xy plane, and has a size larger than the bottom opening 128 in the xy plane. The piping cover 400 is provided with a plurality of piping holes 402. The piping hole 402 is formed in the same manner as the piping hole 134. The pipe that has passed through the pipe hole 402 or the pipe hole 134 is connected to the terminal portion 156 described above. Here, when the electrical equipment 1000 is installed, the piping cover 400 is attached to the bottom surface 126 of the main body case after the piping is passed through the piping hole 402. Therefore, workability at the time of installation is improved. Further, since the piping cover 400 has a size larger than that of the bottom opening 128, water intrusion from between the piping cover 400 and the bottom opening 128 is suppressed. Details of the piping cover 400 will be described later.

A main body opening 130 is provided on the back surface 122 of the main body case. The main body opening 130 is arranged so as to be close to the bottom opening 128, and is arranged so as to face the rear opening 328 provided on the back surface 322 of the rear cover in the x-axis direction. The main body opening 130 has a shape that is a mirror image target with respect to the rear opening 328, and has, for example, a rectangular shape lacking an upper corner. Wiring is passed through the rear opening 328 from the outside of the electric equipment 1000, for example, from a vertical wall for fixing the electric equipment 1000. The wiring is inserted into the main body case 100 through the main body opening 130 following the rear opening 328. The wiring passing through the main body opening 130 is connected to the terminal portion 156 described above.

The wiring cover 500 is attached so as to connect the main body case 100 and the rear cover 300 while surrounding the main body opening 130 and the rear opening 328 from above. The first flange 510 of the wiring cover 500 has a shape that surrounds at least a part of the main body opening 130, specifically, the upper side and the side surface, and is fitted to the edge of the main body opening 130 while being fitted to the edge of the main body opening 130. Is fixed to. The second flange 512 has a shape that surrounds at least a part of the rear opening 328, specifically, the upper side and the side, and is fixed to the rear cover back surface 322 while being fitted to the edge of the rear opening 328. .. The cover portion 520 is arranged so as to connect between the first flange 510 and the second flange 512 in the x-axis direction. The cover portion 520 covers the wiring from the positive direction side of the z-axis. The cover portion 520 opens on the negative side of the z-axis.

Further, in the first flange 510, the second flange 512, and the cover portion 520, the negative end of the z-axis is connected by the third flange 514. Here, the first flange 510, the second flange 512, the third flange 514, and the cover portion 520 are integrally formed. Since the wiring straddling between the back surface 122 of the main body case and the back surface 322 of the rear cover is covered by the wiring cover 500 in this way, water temporarily flows between the back surface 122 of the main body case and the back surface 322 of the rear cover from the positive direction side of the z-axis. Even if it invades, the wiring is prevented from getting wet, so that the waterproof property is improved.

When the electrical equipment 1000 is installed on a standing wall, the main body case 100 is attached to the rear cover 300 after the rear cover 300 is fixed to the standing wall. At that time, the wiring cover 500 is connected to the rear cover back surface 322 in a state of being fixed to the main body case back surface 122. Therefore, since the connection between the second flange 512 and the back surface 322 of the rear cover is made at the installation site of the electrical equipment 1000, the connection state may vary and the waterproof property may deteriorate. In order to suppress this decrease in waterproofness, a sealing groove portion 530 that conforms to the shape of the surface is formed on the surface of the second flange 512 on the back surface 322 side of the rear cover. A sealing member such as packing is arranged in the sealing groove portion 530. Therefore, the second flange 512 and the rear cover back surface 322 are connected while sandwiching the sealing member. As a result, the connection becomes stronger and the deterioration of waterproofness is suppressed. Similar to the second flange 512, the sealing groove portion 530 may be formed in the first flange 510 and the third flange 514. At that time, the sealing member is also arranged in the sealing groove portion 530 of the first flange 510 and the third flange 514.

In the wiring cover 500, the cover portion 520 is not formed on the negative direction side of the z-axis, and the wiring cover 500 opens in that direction. Here, the third flange 514 is covered with the pipe cover 400 from the negative direction side of the z-axis. With such a configuration, the intrusion of water from below is suppressed. Here, the pipe cover 400 has a size corresponding to the distance between the two third flanges 514 in the y-axis direction. Since the piping cover 400 is not too large, deterioration of heat dissipation is suppressed. Further, since the pipe cover 400 and the wiring cover 500 are connected, the pipe lead-in position and the wiring lead-in position are put together, and the positions to be waterproofed are put together. With the piping cover 400 attached to the bottom surface 126 of the main body case, the bottom cover 124 is connected to the bottom surface 126 of the main body case from the negative direction side of the z-axis.

A first heat sink 600 and a second heat sink 700 are arranged on the back surface 122 of the main body case in the y-axis direction. The first heat sink 600 and the second heat sink 700 have separate structures, and dissipate heat generated by the electric devices housed in the main body case 100, respectively. The second heat sink 700 is formed so that the length in the z-axis direction is shorter than that of the first heat sink 600. Therefore, the space on the negative side of the z-axis of the second heat sink 700 is larger than the space on the negative side of the z-axis of the first heat sink 600. In order to effectively utilize such a space, the bottom surface opening 128 and the main body opening 130 are arranged on the negative direction side of the z-axis of the second heat sink 700. The fixing bracket 132 is connected to the back surface 122 of the main body case so as to cover the first heat sink 600 and the second heat sink 700. The fixing bracket 132 is also connected to the back surface 322 of the rear cover.

Further, in order to suppress the intrusion of water when the wiring cover 500 fixed to the back surface 122 of the main body case is connected to the back surface 322 of the rear surface cover, a shielding plate 350 is provided on the back surface 322 of the rear surface cover. The shielding plate 350 projects toward the positive direction side of the x-axis, that is, the rear surface 122 side of the main body case on the positive direction side of the z-axis of the rear opening 328.

FIG. 9 is a perspective view showing the structure of the piping cover 400. The piping cover 400 includes a piping hole 402, a cover bottom surface 404, a waterproof wall 410, a waterproof groove portion 420, and a drainage hole 430. The cover bottom surface 404 is formed in a substantially rectangular shape. A plurality of piping holes 402 are arranged on the bottom surface 404 of the cover. A waterproof wall 410 is erected on the bottom surface 404 of the cover so as to surround the piping hole 402 in the positive direction of the z-axis. Further, the cover bottom surface 404 is provided with a waterproof groove portion 420 so as to surround the waterproof wall 410. In the waterproof groove portion 420, a plurality of walls and grooves are lined up. Further, the waterproof groove portion 420 is provided with a drain hole 430 that penetrates the bottom surface 404 of the cover in the z-axis direction. When the piping cover 400 is attached to the main body case 100, the waterproof groove portion 420 comes into contact with the main body case bottom surface 126 and the third flange 514. The water that has entered the waterproof groove 420 does not flow over the waterproof wall 410 to the piping hole 402 side, but flows through the groove along the wall and is discharged from the drain hole 430. With such a configuration, the intrusion of water from the piping cover 400 into the inside of the main body case 100 is suppressed, and the waterproof property is improved.

(3) Main body case structure FIG. 10 is a perspective view showing the structure of the main body case 100 in the electrical equipment 1000. This corresponds to the configuration in which the electric device lid 180 is removed in the main body case 100 of FIG. The main body case 100 further includes an exhaust fan 164, heat dissipation fins 166, an inner case bottom surface 170, and an inner case opening 172. A plurality of reactor elements 610, a plurality of coils 612, and a transformer 614 are arranged on the mounting surface 602. A control board 710 and a circuit 712 are arranged on the mounting surface 702. As described above, the inside of the main body case 100 is separated into a storage space 150 and an opening space 152 with an inner wall 154 as a boundary. The storage space 150 stores electrical equipment, and the opening space 152 has a bottom opening 128 and a main body. Includes an opening 130 and a terminal 156.

In the storage space 150, an inner case 160 is arranged so as to be separated from the main body case 100 inward. That is, the inner case top surface 162 is arranged so as to face the main body case top surface 110, and the inner case side surface 168 is arranged so as to face the main body case side surface 116. Further, on the negative direction side of the z-axis, the inner case bottom surface 170 is arranged so as to face the inner wall 154. Further, the inner case top surface 162, the inner case side surface 168, and the inner case bottom surface 170 surround the main body case back surface 122 (not shown) to form a box-shaped inner case 160 that opens in the positive direction of the x-axis. Will be done. Since the main body case 100 houses the inner case 160, the main body case 100 can be said to be an "outer case".

Inside the inner case 160, the mounting surface 602 and the mounting surface 702 are arranged in the y-axis direction while facing the positive side of the x-axis. Here, the mounting surface 602 is the surface opposite to the first heat sink 600 shown in FIG. 8, and the mounting surface 702 is the surface opposite to the second heat sink 700 shown in FIG. Therefore, the mounting surface 702 is formed so that the length in the z-axis direction is shorter than that of the mounting surface 602. Electrical equipment is mounted on the mounting surface 602 and the mounting surface 702. As mentioned above, electrical equipment is a conversion circuit. Here, among the conversion circuits, the plurality of reactor elements 610, the plurality of coils 612, and the transformer 614 are installed on the mounting surface 602, and the control board 710 and the circuit 712 are installed on the mounting surface 702. Although a plurality of reactor elements 610, a plurality of coils 612, a transformer 614, a control board 710, and a circuit 712 (hereinafter, each is referred to as a "circuit component" or these are collectively referred to as a "circuit component") are connected to each other. Since a known technique may be used for the configuration of the conversion circuit, the description thereof will be omitted here. The circuit 712 includes a switch element.

Since the electric device configured in this way generates heat, heat dissipation is required to suppress the temperature rise due to the heat generation. Therefore, two exhaust fans 164 are provided on the top surface 162 of the inner case. In particular, the two exhaust fans 164 are arranged on the mounting surface 602 on which the electrical equipment is mounted and the mounting surface 702 on the positive side of the z-axis. The air warmed by the heat generated by the electrical equipment in the inner case 160 by the two exhaust fans 164 is output to the space between the main body case top surface 110 and the inner case top surface 162.

Radiation fins 166 are provided on the outside of the main body case top surface 110 facing the inner case top surface 162 on which the exhaust fan 164 is provided. The heat radiation fins 166 exchange heat between the air outside the top surface 110 of the main body case and the air inside the top surface 110 of the main body case. Therefore, the air that is output to the space between the top surface 110 of the main body case and the top surface 162 of the inner case and is warmed is cooled by heat exchange. The cold air travels through the storage space 150 to the inner wall 154 through the air path 810 formed in the portion sandwiched between the inner case side surface 168 and the main body case side surface 116. While traveling along the air path 810, the air cools while exchanging heat through the side surface 116 of the main body case. After that, the air cools the electric device by passing through the inner case opening 172 of the inner case bottom surface 170 or below the mounting surface 702. Further, the air warmed by the electrical equipment travels toward the exhaust fan 164, so that the air is circulated.

(4) Electrical Equipment Structure FIGS. 11 and 12 are perspective views showing the structure of the first heat sink 600, FIG. 11 shows a case where the reactor element 610 is installed, and FIG. 12 shows the case where the reactor element 610 is installed. Indicates the case where it is not done. Further, FIG. 13 is still another perspective view showing the structure of the first heat sink 600, which shows the opposite surfaces of FIGS. 11 and 12. The first heat sink 600 includes a mounting surface 602 and heat dissipation fins 604. Further, the mounting surface 602 includes a first storage groove 620, a second storage groove 622, a third storage groove 624, and a fourth storage groove 626. Since known techniques may be used for the reactor element 610, the coil 612, and the transformer 614, description thereof will be omitted here, but each of the plurality of reactor elements 610 has a non-planar connecting surface 616. Further, the coil 612 and the transformer 614 also have a non-planar connecting surface. The non-planar shape is, for example, a three-dimensional shape including a curved surface.

In the first heat sink 600, heat radiation fins 604 are provided on one surface. On the other hand, in the first heat sink 600, on the mounting surface 602 on the side opposite to the surface on which the heat radiation fins 604 are provided, the first storage groove 620 and the second storage groove 622 for storing each of the plurality of circuit components, A third storage groove 624 and a fourth storage groove 626 are provided. The first storage groove 620 is a groove for storing three reactor elements 610 side by side in a row, and has a shape longer in the z-axis direction than in the y-axis direction. Further, the second storage groove 622 is a groove arranged on the positive direction side of the y-axis of the first storage groove 620 and for storing the two reactor elements 610 side by side.

The reactor element 610 is stored in the second storage groove 622 with the connection surface 616 facing the second storage groove 622. That is, the shape of the bottom of the second storage groove 622 is formed so as to match the shape of the connecting surface 616. The same applies to the first storage groove 620, the third storage groove 624, and the fourth storage groove 626. In a state where the circuit components are stored in the first storage groove 620 to the fourth storage groove 626, the potting resin is injected into each of the first storage groove 620 to the fourth storage groove 626. As a result, the circuit components are fixed from the first storage groove 620 to the fourth storage groove 626. Since the first storage groove 620 to the fourth storage groove 626 are formed according to the shape of the connection surface of the circuit component, the first storage groove 620 to the fourth storage groove 620 to the fourth storage groove 626 even if the connection surface of the circuit component is non-planar. The circuit components can be easily stored in the groove 626.

The heat radiating fin 604 is fixed to the back surface 122 of the main body case so as to face the back surface 322 of the rear cover. Therefore, even if heat is generated in the circuit components fixed from the first storage groove 620 to the fourth storage groove 626, the heat dissipation fin 604 executes heat dissipation to the outside of the main body case 100.

FIG. 14 is a perspective view showing the structure of the second heat sink 700. The second heat sink 700 includes a mounting surface 702 and heat dissipation fins 704. Since known techniques may be used for the control board 710 and the circuit 712 shown in FIG. 10, description thereof will be omitted here, but each of the control board 710 and the circuit 712 has a flat connection surface mounted on it. Turn to surface 702.

In the second heat sink 700, heat radiation fins 704 are provided on one surface. On the other hand, in the second heat sink 700, the mounting surface 702 on the side opposite to the surface on which the heat radiation fin 704 is provided is formed in a flat shape. The control board 710 and the circuit 712 are fixed to the mounting surface 702 by the potting resin, but since all of the mounting surface 702, the control board 710, and the circuit 712 have a flat surface, the fixing is facilitated. The heat radiating fin 704 is fixed to the back surface 122 of the main body case so as to face the back surface 322 of the rear cover. Therefore, even if heat is generated in the circuit component fixed to the mounting surface 702, the heat radiating fin 704 executes heat radiating to the outside of the main body case 100.

Unlike the first heat sink 600 in which the first storage groove 620 and the like are formed on the mounting surface 602, a general-purpose product can be used for the second heat sink 700 in which the mounting surface 702 is flat. Therefore, the increase in manufacturing cost is suppressed by using the second heat sink 700. Further, since the circuit components having a non-planar connection surface are collected in the first heat sink 600 and the circuit components having a flat connection surface are collected in the second heat sink 700, a plurality of circuit components can be easily mounted.

According to this embodiment, it is possible to provide the electric equipment 1000 having a structure suitable for the outdoors, which improves the above-mentioned situations (i) to (ix).
(I) Since the double structure of the front cover top surface 210 and the main body case top surface 110 is formed, the presence of an air layer between the front cover top surface 210 and the main body case top surface 110 causes dew condensation. Can be suppressed. Further, since the double structure of the front cover top surface 210 and the main body case top surface 110 is formed, the waterproof property can be improved.
(Ii) Since the double structure of the front cover top surface 210 and the main body case top surface 110 is formed, the main body case by sunlight due to the presence of the air layer between the front cover top surface 210 and the main body case top surface 110. The temperature rise inside 100 can be suppressed.
(Iii) Since the main body case 100 is surrounded by the front cover 200 and the rear cover 300, it is possible to prevent the main body case 100 from being exposed. Further, since the main body case 100 is prevented from being exposed, it is possible to suppress the appearance from being spoiled regardless of the configuration of the main body case 100.

(Iv) Since a plurality of notched portions 314 having a concave shape are provided on the rear flange 312, heat dissipation can be promoted even if heat is generated inside the main body case 100. Further, since the heat radiating port 212 is opened in the front cover top surface 210, the air path 800 can be formed in the space sandwiched between the main body case side surface 116 and the front cover side surface 216. Further, since the air path 800 is formed in the space sandwiched between the main body case side surface 116 and the front cover side surface 216, even if heat is generated inside the main body case 100, heat can be dissipated through the air path 800. Further, since the heat radiating fins 166 are provided on the outside of the surface facing one surface of the inner case 160 in which the exhaust fan 164 is provided, the warm air output from the exhaust fan 164 can be radiated by the heat radiating fins 166. Further, since the air path 810 is formed in the portion sandwiched between the inner case side surface 168 and the main body case side surface 116, air can be circulated. In addition, since air circulates, electrical equipment can be cooled. Moreover, since the conversion circuit is housed as an electric device, the conversion circuit can be cooled.

(V) Since the piping cover 400 has a size larger than that of the bottom opening 128, it is possible to suppress the intrusion of water from between the piping cover 400 and the bottom opening 128. Further, since the piping cover 400 has a piping hole 402, the piping can be passed through while the piping cover 400 is connected to the main body case 100. Further, since the waterproof wall 410 surrounding the piping hole 402 is erected in the piping cover 400, it is possible to prevent water that has entered the waterproof groove portion 420 from flowing into the piping hole 402 side. Further, since the waterproof groove 420 surrounding the waterproof wall 410 is provided and the drain hole 430 is provided in the waterproof groove 420, the water flowing through the waterproof groove 420 can be discharged from the drain hole 430. Further, since the water flowing through the waterproof groove 420 is discharged from the drain hole 430, it is possible to suppress the intrusion of water from the piping cover 400 into the main body case 100. Further, since the intrusion of water from the piping cover 400 into the main body case 100 is suppressed, the waterproof property can be improved.

Further, since the wiring straddling the back surface 122 of the main body case and the back surface 322 of the rear cover is covered by the wiring cover 500, even if water enters between the back surface 122 of the main body case and the back surface 322 of the rear cover, the wiring gets wet. Can be prevented. Moreover, since the wiring is prevented from getting wet, the waterproof property can be improved. In addition, the electric wire is drawn by the wall surface and the exposed pipe, and the risk of water and dust invading the drawn portion can be reduced. In addition, it is possible to reduce the risk of storms and dust during a storm invading the inside from the lead-in portion. Further, since the lower portion of the cover portion 520 opened is covered by the pipe cover 400, it is possible to suppress the intrusion of water from below. Further, since the pipe cover 400 and the wiring cover 500 are connected, the pipe lead-in position and the wiring lead-in position can be put together, and the positions to be waterproofed can be aggregated.

(Vi) Since the terminal portion 156 is arranged on the opening space 152 side, piping or wiring can be prevented from being inserted into the storage space 150. Further, since the pipe or wiring is not inserted into the storage space 150, it is not necessary to provide a hole for passing the pipe or wiring in the inner wall 154, and water or dust can be prevented from entering the storage space 150. Also. Since the inner wall 154 is provided, the waterproofness of the storage space 150 can be improved.
(Vii) Since the second flange 512 and the rear cover back surface 322 are connected while sandwiching the sealing member, the connection can be strengthened. Moreover, since the connection becomes strong, deterioration of waterproofness can be suppressed. Further, since the deterioration of the waterproof property is suppressed, the maintenance burden on the electric equipment 1000 can be reduced.

(Viii) Since the handle portion 118 is provided on the side surface 116 of the main body case, safety can be improved by holding the handle portion 118 at the time of installation. Further, since the handle portion 118 supports the front cover side surface 216, the front cover side surface 216 can be made thinner. Further, since the front cover side surface 216 is thinned, the electric equipment 1000 can be reduced in weight. Further, since the handle portion 118 supports the front cover side surface 216, the bending of the front cover side surface 216 can be suppressed. Further, when the electrical equipment 1000 is installed, the piping cover 400 is attached to the bottom surface 126 of the main body case after the piping is passed through the piping hole 402, so that the workability at the time of installation can be improved. Further, in the rear cover 300, since the shielding plate 350 is provided above the rear opening 328, it is possible to suppress the intrusion of water at the time of installation.

(Ix) Since the first storage groove 620 to the fourth storage groove 626 are formed according to the shape of the connection surface of the circuit component, even if the connection surface of the reactor element 610, the coil 612, and the transformer 614 is non-planar. , These can be easily stored in the first heat sink 600. Further, since the reactor element 610, the coil 612, and the transformer 614 can be easily stored in the first heat sink 600, an increase in manufacturing cost can be suppressed. Further, unlike the first heat sink 600 in which the first storage groove 620 and the like are formed on the mounting surface 602, a general-purpose product can be used for the second heat sink 700 in which the mounting surface 702 is flat. Further, by using the second heat sink 700, which is a general-purpose product, an increase in manufacturing cost can be suppressed. Further, since the circuit components having a non-planar connection surface are collected in the first heat sink 600 and the circuit components having a flat connection surface are collected in the second heat sink 700, a plurality of circuit components can be easily mounted. Further, since it becomes easy to mount a plurality of circuit parts, it is possible to suppress an increase in manufacturing cost.

In addition to the effects described so far, the following effects can also be obtained according to this embodiment. Since the main body flange 112 is provided on the top surface 110 of the main body case and the rear surface flange 312 is provided on the top surface 310 of the rear cover, it is possible to temporarily shield the water swirled up by the wind in a storm or the like. In addition, since the water swirled up by the wind in a storm or the like is temporarily shielded, the waterproof property can be further improved. Further, since the main body flange 112 is provided on the top surface 110 of the main body case and the rear surface flange 312 is provided on the top surface 310 of the rear surface cover, it can be used for alignment when the front cover 200 is attached. Since the main body flange 112 and the rear flange 312 are used for the alignment when the front cover 200 is attached, the installation of the electrical equipment 1000 can be facilitated.

Further, since the first heat sink 600 and the second heat sink 700 having a shorter vertical length than the first heat sink 600 are arranged side by side, the space below the second heat sink 700 is larger than the space below the first heat sink 600. Can be wider. Further, since the bottom surface opening 128 and the main body opening 130 are arranged below the second heat sink 700, such a space can be effectively used.

The outline of one aspect of the present invention is as follows.
[Item 1-1]
The main body case (100) for storing electrical equipment and
The front cover (200) arranged in front of the main body case (100) and
A rear cover (300) arranged behind the main body case (100) is provided.
The electrical equipment (1000), wherein the main body case top surface (110) is covered by at least one of a front cover top surface (210) and a rear cover top surface (310).

[Item 1-2]
The front cover top surface (210) is arranged above the main body case top surface (110) and the rear cover top surface (310).
The main body case top surface (110) is provided with a main body flange (112) protruding toward the front cover (200).
The electrical equipment (1000) according to item (1-1), wherein the top surface (310) of the rear cover is provided with a rear flange (312) projecting toward the front cover (200).

[Item 1-3]
The electrical equipment (1000) according to item (1-2), wherein the rear flange (312) is provided with a notch (314) or a heat dissipation port.
[Item 1-4]
A heat dissipation port (212) is opened on the top surface (210) of the front cover.
The heat radiating port (212) is arranged above the air path (800) sandwiched between the side surface (116) of the main body case and the side surface (216) of the front cover, from items (1-1) to (1). -3) The electrical equipment (1000) according to any one of the items.
[Item 1-5]
A handle (118) is provided on the side surface (116) of the main body case.
The electrical equipment (1000) according to any one of items (1-1) to (1-4), wherein the handle portion (118) supports the front surface cover side surface (216).

[Item 1-6]
A pipe cover (400) which is a bottom opening (128) provided on the bottom surface (126) of the main body case and covers the bottom opening (128) for inserting the piping from below into the inside of the main body case (100). Further prepare
Items (1-1) to (1-5), wherein the pipe cover (400) has a size larger than that of the bottom opening (128) and has a pipe hole (402) through which the pipe is passed. The electrical equipment (1000) according to any one of the items.
[Item 1-7]
The electrical equipment (1000) according to item (1-6), wherein a waterproof wall (410) surrounding the piping hole (402) is erected on the piping cover (400).

[Item 1-8]
The piping cover (400) is provided with a waterproof groove (420) that surrounds the waterproof wall (410).
The electrical equipment (1000) according to item (1-7), wherein the waterproof groove portion (420) is provided with a drain hole (430) penetrating the piping cover (400).
[Item 1-9]
The main body case (100) is provided with an inner wall (154) that separates a storage space (150) for storing electrical equipment and a bottom opening (128).
Item (1-6) to (1-8), wherein a terminal portion (156) for connecting a pipe is provided on the bottom opening (128) side of the inner wall (154). The electrical equipment (1000) described.

[Item 2-1]
The main body case (100) for storing electrical equipment and
The rear cover (300) arranged behind the main body case (100) and
A wiring cover (500) arranged between the rear cover (300) and the main body case (100) is provided.
The rear cover (300) is provided with a rear opening (328) through which wiring is passed.
On the surface of the main body case (100) facing the rear cover (300), a main body opening (130) for inserting the wiring from the rear opening (328) into the main body case (100) is provided.
The wiring cover (500) surrounds at least a part of the main body opening (130) and the first flange (510) connected to the main body case (100), and surrounds at least a part of the rear opening (328). A second flange (512) connected to the rear cover (300) and a cover portion (520) connecting the first flange (510) and the second flange (512) to cover the wiring are provided. Electrical equipment (1000).

[Item 2-2]
The second flange (512) is provided with a sealing groove portion (530) for arranging the sealing member.
The electrical equipment (1000) according to item (2-1), wherein the second flange (512) and the rear cover (300) are connected while sandwiching the sealing member.
[Item 2-3]
Item (2-1) or (2-) characterized in that the rear cover (300) is provided with a shielding plate (350) projecting toward the main body case (100) above the rear opening (328). 2) The electrical equipment (1000).
[Item 2-4]
The main body case (100) is provided with an inner wall (154) that separates the storage space (150) for storing electrical equipment and the main body opening (130).
Item (2-1) to (2-3), wherein a terminal portion (156) for connecting wiring is provided on the main body opening (130) side of the inner wall (154). The electrical equipment (1000) described.

[Item 2-5]
The main body case (100) is provided with a first heat sink (600) and a second heat sink (700) having a length shorter in the vertical direction than the first heat sink (600).
The electrical equipment (1000) according to any one of items (2-1) to (2-4), wherein the main body opening (130) is arranged below the second heat sink (700). ..
[Item 2-6]
A bottom opening (128) provided in the vicinity of the main body opening (130) on the bottom surface (126) of the main body case, and the bottom opening (128) for inserting a pipe from below into the inside of the main body case (100). Further equipped with a piping cover (400) that covers from below,
The piping cover (400) has a size larger than the bottom opening (128) and has a piping hole (402) through which the piping is passed.
The electrical equipment (1000) according to any one of items (2-1) to (2-5), wherein the lower portion opened in the cover portion (520) is covered by the piping cover (400). ).

[Item 3-1]
An inner case (160) for storing electrical equipment and
Equipped with a main body case (100) for storing the inner case (160)
An exhaust fan (164) is provided on one side of the inner case (160).
An electric facility (1000) characterized in that, in the main body case (100), heat radiation fins (166) are provided on the outside of the surface facing one surface of the inner case (160) in which the exhaust fan (164) is provided.

[Item 3-2]
The exhaust fan (164) is arranged on the inner case top surface (162) and above the storage space (150) in which the electrical equipment should be stored.
The electrical equipment (1000) according to item (3-1), wherein an air path (810) is formed in a portion sandwiched between the inner case side surface (168) and the main body case side surface (122).
[Item 3-3]
The electrical equipment (1000) according to item (3-1) or (3-2), wherein the inner case (160) houses a conversion circuit that converts DC power into AC power as an electric device.
[Item 3-4]
The electrical equipment (1000) according to any one of items (3-1) to (3-3), wherein the inner case (160) accommodates a secondary battery as an electrical device.

[Item 4-1]
With multiple circuit components
Equipped with a main body case (100) for storing multiple circuit parts,
Each of the plurality of circuit components has a non-planar connecting surface (616).
A first heat sink (600) for connecting a plurality of circuit components is arranged in the main body case (100).
On the surface of the first heat sink (600) opposite to the surface on which the heat radiation fins (604) are provided, a first storage groove (620) and a first storage groove (620) for storing each of the plurality of circuit components from the connection surface (616) side. An electric facility (1000) characterized in that a plurality of two storage grooves (622), a third storage groove (624), and a fourth storage groove (626) are provided.
[Item 4-2]
The electrical equipment (1000) according to item (4-1), wherein the plurality of circuit components include a reactor element (610).

[Item 4-3]
The body case (100) also houses another type of circuit component with a flat connecting surface.
A second heat sink (700) for connecting another type of circuit component is also arranged in the main body case (100).
Item (4-1) or (4-2), wherein the surface of the second heat sink (700) opposite to the surface on which the heat radiation fins (704) are provided is formed in a flat shape. Electrical equipment (1000).
[Item 4-4]
The electrical equipment (1000) according to item (4-3), wherein another type of circuit component comprises a switch element.

(Example 2)
Next, Example 2 will be described. The second embodiment relates to the electrical equipment installed outdoors as in the first embodiment. In the second embodiment, the following situations are considered. A plurality of terminal portions 156 are arranged on the opening space 152 side of the inner wall 154 of the main body case 100. Since the surface of the inner wall 154 on the opening space 152 side faces downward, each terminal portion 156 also faces downward. When the terminal portion 156 is a quick-connect terminal block, the wiring is inserted into the terminal portion 156 from below. However, when the terminal portion 156 faces downward, it is difficult to see the insertion portion of the wiring, and the workability is not improved. On the other hand, even when the inner wall 154 is arranged so as to improve workability, it is desired that the electric equipment is efficiently stored in order to suppress the reduction of the storage space 150 in the main body case 100. The second embodiment will be described focusing on the difference from the first embodiment.

15 (a)-(b) show the structure of the electric equipment 1000 according to the second embodiment of the present invention. FIG. 15A is a front view showing the structure of the electrical equipment 1000, and is shown in the same manner as in FIG. Further, FIG. 15B is a perspective view showing the structure of the electrical equipment 1000, and is shown in the same manner as in FIG. In these, the main body case 100 of the electrical equipment 1000 is shown, and the front cover 200 arranged in front of the main body case 100 and the rear cover 300 arranged behind the main body case 100 are omitted.

As described above, the main body case 100 is formed in a box shape surrounded by the main body case top surface 110, the main body case side surface 116, the main body case back surface 122, and the main body case bottom surface 126, and opens to the front side. The storage space 150 is arranged on the upper side inside the main body case 100, and the opening space 152 is arranged on the lower side of the storage space 150.

A box-shaped inner case 160 is arranged in the storage space 150, and electrical equipment is stored in the inner case 160. Here, the opening portion formed on the front side of the inner case 160 is covered with the electric device lid 180. The main body opening 130 is arranged in the opening space 152. Through the main body opening 130, wiring from the rear opening 328 of the rear cover 300 (not shown) is inserted into the opening space 152.

Further, inside the main body case 100, an inner wall 154 that separates the storage space 150 and the opening space 152 is arranged so as to extend in the y-axis direction. In the first embodiment, the inner wall 154 had a plate shape along a substantially xy plane, but the shape of the inner wall 154 here is different from that of the first embodiment. The details of the inner wall 154 will be described later, but in the inner wall 154, the inclined surface 190 arranged on the front side and the horizontal plane 192 arranged on the rear side are connected. Further, the inner wall 154 is inclined so that the rearmost end of the horizontal plane 192 is lower than the frontmost end of the inclined surface 190. A terminal portion 156 for connecting wiring (not shown) is provided on the opening space 152 side of the inner wall 154. In particular, the terminal portion 156 is arranged on the inclined surface 190. As described above, since the terminal portion 156 is arranged on the opening space 152 side, the pipe or the wiring is not inserted into the storage space 150. This eliminates the need to provide a hole for the pipe or wiring in the inner wall 154, and prevents water or dust from entering the storage space 150.

16 (a)-(b) are another views showing the structure of the electrical equipment 1000. 16 (a) is a perspective view showing the structure of the main body case 100 from which the inner wall 154 is removed in FIG. 15 (b), and FIG. 16 (b) shows the structure of the main body case 100 excluding the side surface 116 of the main body case. It is a side view which shows.

As described above, the inner wall 154 includes an inclined surface 190 and a horizontal plane 192, and also includes an upper flange 186 and a lower flange 188. Here, the upper flange 186, the lower flange 188, the inclined surface 190, and the horizontal plane 192 are integrally formed. The upper flange 186 is formed so as to be long in the y-axis direction and face the yz plane. The lowermost side of the upper flange 186 is connected to one end of the inclined surface 190 on the front cover 200 (not shown) side. The inclined surface 190 descends from one end on the front cover 200 side toward the intermediate portion 194, which is a portion between the front cover 200 and the rear cover 300. That is, the inclined surface 190 has an inclination so as to decrease from the front side to the rear side.

A plurality of openings 196 are provided on the inclined surface 190, and each opening 196 penetrates the terminal portion 156 and the like. Therefore, when the inner wall 154 is attached to the main body case 100, the terminal portion 156 is provided on the inclined surface 190. Further, the terminal portion 156 is also tilted so as to face the front side in accordance with the tilt of the tilted surface 190. The terminal portion 156 is, for example, a quick-connect terminal block, but by inclining it so as to face the front side in accordance with the inclination of the inclined surface 190, the insertion portion of the wiring can be easily seen. Therefore, the wiring can be easily connected and the workability is improved. The intermediate portion 194 may be arranged at a position where a plurality of terminal portions 156 are provided on the inclined surface 190.

The horizontal plane 192 is along a substantially xy plane from the intermediate portion 194 of the inclined surface 190 toward one end on the rear cover 300 side. Therefore, the horizontal plane 192 is closer to the xy plane, which is more horizontal than the inclined plane 190. By combining the inner wall 154 with the horizontal plane 192 instead of forming it only with the inclined surface 190, the reduction of the storage space 150 is suppressed. Therefore, it becomes possible to efficiently store the electric equipment. The lower flange 188 is connected from one end on the rear cover 300 side of the inclined surface 190 toward the lower side. The lower flange 188 is formed so as to be long in the y-axis direction and face the yz plane.

As shown in FIGS. 16A-(b), the inner wall 154 is detachably provided with respect to the main body case 100. Since it is removable, the inner wall 154 is removed from the main body case 100 while the work of storing the electric device in the main body case 100 is being executed in a factory or the like. As a result, a space for a portion to which the inner wall 154 should be attached is created, and workability is improved. Hereinafter, the structure for attaching the inner wall 154 to the main body case 100 will be described.

Screw holes 198 are provided at both ends of the inclined surface 190 in the y-axis direction. A screw is inserted into the screw hole 198 when the inner wall 154 is attached to the main body case 100. Here, since the screw holes 198 and the screw holes of the main body case 100 are formed in the direction perpendicular to the inclined surface 190, the screws are inserted toward the inclined surface 190. Since the screw holes 198 and the screw holes of the main body case 100 are formed in the direction perpendicular to the inclined surface 190, a structure for changing these directions from the direction perpendicular to the inclined surface 190 becomes unnecessary. Further, a plurality of screw holes 198 are also arranged on the lower flange 188. Screws are also inserted into these when the inner wall 154 is attached to the main body case 100.

According to this embodiment, since the inner wall 154 is arranged so as to be inclined so that one end on the rear cover 300 side is lower than the one end on the front cover 200 side, the terminal portion 156 is tilted in accordance with the inner wall 154. be able to. Further, since the terminal portion 156 is tilted according to the inner wall 154, the insertion portion of the wiring can be easily seen. In addition, workability can be improved because the insertion portion of the wiring can be easily seen. Further, since the workability is improved, it is possible to provide the electric equipment 1000 having a structure suitable for the outdoors. Further, since the inner wall 154 is detachably provided with respect to the main body case 100, the inner wall 154 can be removed from the main body case 100 during the work, and the inner wall 154 can be attached to the main body case 100 when the work is completed. Further, since the inner wall 154 is removed from the main body case 100 during the work, the workability can be improved.

Further, since the inner wall 154 is formed by the combination of the inclined surface 190 and the horizontal plane 192, the terminal portion 156 can be tilted in accordance with the inclined surface 190 by providing the terminal portion 156 on the inclined surface 190. Further, by providing the horizontal plane 192, the reduction of the storage space 150 can be suppressed. Further, since the inclined surface 190 is provided with a screw hole 198 for inserting a screw toward the inclined surface 190, the structure for attaching the screw can be simplified.

The outline of one aspect of the present invention is as follows.
[Item 5-1]
The main body case (100) for storing electrical equipment and
A front cover (200) arranged in front of the main body case (100) and
A rear cover (300) arranged behind the main body case (100) is provided.
The rear cover (300) is provided with a rear opening (328) through which wiring is passed.
On the surface of the main body case (100) facing the rear cover (300), a main body opening (130) for inserting the wiring from the rear opening (328) into the main body case (100) is provided. , Provided below the part where the electrical equipment should be stored
The main body case (100) is an inner wall (154) that separates a portion for accommodating the electric device and the main body opening (130), and is more than one end on the front cover (200) side. An inner wall (154) inclined so that one end on the rear cover (300) side is downward is provided.
An electric facility (1000) characterized in that a terminal portion (156) for connecting the wiring is provided on the main body opening (130) side of the inner wall (154).

[Item 5-2]
The electrical equipment (1000) according to item (5-1), wherein the inner wall (154) is detachably provided with respect to the main body case (100).

[Item 5-3]
The inner wall (154) includes an inclined surface (190) that descends from one end on the front cover (200) side toward a portion between the front cover (200) and the rear cover (300), and the front cover. It has a horizontal plane (192) that is closer to horizontal than the inclined surface (190) from the portion between the rear cover (200) and the rear cover (300) toward one end on the rear cover (300) side.
The electrical equipment (1000) according to item (5-1), wherein the terminal portion (156) is provided on the inclined surface (190).

[Item 5-4]
The inclined surface (190) is a screw hole (198) for attaching the inner wall (154) to the main body case (100), and a screw is inserted toward the inclined surface (190). The electrical equipment (1000) according to item (5-3), wherein the screw holes (198) are provided.

(Example 3)
Next, Example 3 will be described. Example 3 relates to electrical equipment installed outdoors as before. In Example 3, the following situations are considered. The first heat sink 600 and the second heat sink 700 arranged on the back surface 122 of the main body case 100 dissipate heat generated by the electric equipment housed in the main body case 100. Therefore, the rear cover top surface 310 of the rear cover 300 arranged above the first heat sink 600 and the second heat sink 700 may become hot due to heat dissipation. On the other hand, if all the top surfaces 310 of the rear cover are opened, the efficiency of heat dissipation is improved, but there is a possibility that foreign matter may enter through the openings. Therefore, it is desired to suppress heat generation while preventing the invasion of foreign substances. The third embodiment will be described focusing on the differences from the past.

FIG. 17 is a perspective view showing the structure of the electrical equipment 1000 according to the third embodiment of the present invention, and is shown in the same manner as in FIG. 18 (a)-(b) are exploded perspective views showing the structure of the electrical equipment 1000, and are shown in the same manner as in FIGS. 3 or 7. Here, FIG. 18B is an enlarged perspective view of the rear cover 300 and the removable cover 900 of FIG. 18A. The electrical equipment 1000 in the first embodiment includes the main body case 100, the front cover 200, and the rear cover 300, but the detachable cover 900 is further added to the main body case 100 in the third embodiment. The main body case 100 stores electrical equipment, and the front cover 200 is arranged in front of the main body case 100. These have the same shape as before.

The rear cover 300 is arranged behind the main body case 100 so as to cover the back surface 122 of the main body case. The rear cover 300 is formed in a box shape surrounded by the rear cover top surface 310, the rear cover side surface 316, the rear cover back surface 322, and the back cover bottom surface 326, and opens to the front side. Further, the rear surface cover back surface 322 is provided with a rear surface opening 328 through which wiring is passed, and the rear surface cover back surface 322 is fixed to a standing wall such as a building (not shown).

The first opening region 370, the second opening region 372, and the third opening region 374 are arranged in the y-axis direction on the rear cover top surface 310. Each of the first opening region 370, the second opening region 372, and the third opening region 374 penetrates the rear cover top surface 310 in a rectangular shape. The first opening region 370, the second opening region 372, and the third opening region 374 may be collectively referred to as an opening region. A boundary plate 376 is arranged between the first opening region 370 and the second opening region 372, and a boundary plate 376 is also arranged between the second opening region 372 and the third opening region 374. It can be said that the first opening region 370, the second opening region 372, and the third opening region 374 are formed by these boundary plates 376.

The detachable cover 900 is detachably arranged on the rear cover top surface 310 of the rear cover 300. The removable cover 900 includes a removable cover top surface 910, a removable flange 912, and a removable cover upper surface 914, which are integrally formed of a material having lower thermal conductivity than the rear surface cover 300, for example, a resin material. The removable cover top surface 910 is formed in a plate shape so as to have a rectangular surface that is longer in the y-axis direction than in the x-axis direction. The detachable flange 912 is erected from the frontmost edge of the detachable cover top surface 910 toward the upper side, and the detachable cover upper surface 914 extends from the uppermost edge of the detachable flange 912 toward the front side.

A first region 920, a second region 922, and a third region 924 are arranged in the y-axis direction on the attachment / detachment cover top surface 910 of the attachment / detachment cover 900. Here, the first region 920 and the first opening region 370 face each other, the second region 922 and the second opening region 372 face each other, and the third region 924 and the third opening region 374 face each other. A plurality of holes 930 are arranged in each of the first region 920, the second region 922, and the third region 924. Since each hole 930 is formed so as to penetrate the top surface 910 of the removable cover, the hole 930 communicates with the opening region of the rear cover 300.

A boundary region 926 is arranged between the first region 920 and the second region 922, and a boundary region 926 is also arranged between the second region 922 and the third region 924. Here, the boundary region 926 and the boundary plate 376 face each other. No holes 930 are formed in the boundary region 926. On the other hand, the width in the y-axis direction in the boundary region 926 is made larger than the distance between the two adjacent holes 930 in the first region 920 and the like. Further, screw holes 960 are arranged at each of the ends in the y-axis direction on the top surface 910 of the removable cover. A screw is inserted into the screw hole 960 when the removable cover 900 is attached to the rear cover 300.

The detachable flange 912 is arranged along the rear flange 312 of the rear cover 300, and the detachable cover upper surface 914 is arranged so as to cover a part of the main body case top surface 110 of the main body case 100. As a result, the removable cover upper surface 914 is arranged between the front cover top surface 210 of the front cover 200 and the main body case top surface 110 of the main body case 100. By sandwiching the removable cover upper surface 914 with low thermal conductivity between the front cover top surface 210 and the main body case top surface 110, heat conduction between the front cover top surface 210 and the main body case top surface 110 is suppressed. Will be done.

FIG. 19 is an exploded perspective view showing the structure of the rear cover 300 and the removable cover 900. This corresponds to the case where FIG. 18C is viewed from the opposite direction. A plurality of rib portions 950 are arranged on the surface on the rear surface cover top surface 310 side, that is, the lower surface in each of the first region 920, the second region 922, and the third region 924 of the removable cover top surface 910. The rib portion 950 has a rod-like shape and extends in the x-axis direction or the y-axis direction. Here, the rib portion 950 is arranged so as to avoid the plurality of holes 930. The rib portion 950 is formed to increase the strength of the removable cover top surface 910. When the removable cover 900 is attached to the rear cover 300, the rib portion 950 is housed in each of the first opening region 370, the second opening region 372, and the third opening region 374 in the rear cover top surface 310 of the rear cover 300. NS. As a result, an increase in the thickness of the removable cover top surface 910 due to the rib portion 950 is suppressed.

A claw portion 940 extending in the positive direction of the y-axis is provided on the surface of the removable cover top surface 910 on the rear surface cover top surface 310 side. Specifically, the claw portion 940 extends from the first region 920 toward the boundary region 926 and extends from the second region 922 toward the boundary region 926. The claw portion 940 is engaged with the boundary plate 376 of the rear cover top surface 310. Therefore, even when the back surface 322 of the rear cover is fixed to the vertical wall, the removable cover top surface 910 is aligned with the rear surface cover top surface 310, and then the removable cover 900 is slid in the positive direction of the y-axis. , The claw portion 940 can be engaged with the boundary plate 376.

At the central portion of the top surface 910 of the removable cover, the removable cover 900 and the rear cover 300 are fixed by the claw portion 940, so that no screw is required. Since the central portion of the top surface 310 of the rear cover is heated to a high temperature due to heat dissipation, workability is improved by eliminating the need for screws. After the detachable cover 900 and the rear cover 300 are fixed by the claw portion 940, the screw is inserted into the screw hole 960 described above. Since the screw hole 960 is separated from the central portion of the rear cover top surface 310, the temperature rise due to heat dissipation is suppressed in this portion. After that, the front cover 200 is attached.

According to this embodiment, since the removable cover 900 having a thermal conductivity lower than that of the rear cover 300 is arranged on the top surface 310 of the rear cover, it is possible to suppress heat generation due to heat dissipation. In addition, workability can be improved because heat is suppressed from being heated by heat dissipation. Further, since the workability is improved, it is possible to provide the electric equipment 1000 having a structure suitable for the outdoors. Further, since the removable cover 900 is arranged on the rear cover top surface 310, even when the opening on the rear surface cover top surface 310 is enlarged, the detachable cover 900 can suppress the intrusion of foreign matter.

Further, since the removable cover 900 is removable, it can be replaced. Further, since the removable cover 900 is provided with a plurality of holes 930 communicating with the first opening region 370 to the third opening region 374 of the rear cover top surface 310, it is possible to suppress a decrease in heat dissipation efficiency. Further, since the first region 920 to the third region 924 separated by the boundary region 926 are arranged in the removable cover 900 and the boundary region 926 is not provided with the hole 930, it is difficult to conduct heat from the rear cover 300. Parts can be formed. In addition, since a portion that does not easily conduct heat from the rear cover 300 is formed, it is possible to prevent the surface from becoming hot.

Further, since the claw portion 940 that meshes with the boundary plate 376 of the rear cover top surface 310 is provided on the surface of the rear cover top surface 310 of the removable cover top surface 910, the central portion of the rear cover top surface 310 that becomes hot. The removable cover 900 can be easily attached to the cover. Further, since the claw portion 940 that meshes with the boundary plate 376 of the rear cover top surface 310 is provided on the surface of the rear cover top surface 310 of the removable cover top surface 910, the central portion of the rear cover top surface 310 that becomes hot. No screws are required to attach the removable cover 900 to the cover 900. Further, since the rib portion 950 is arranged on the removable cover top surface 910, the strength of the removable cover top surface 910 can be improved.

Further, since a screw hole 960 for attaching the detachable cover 900 to the rear cover 300 is arranged at the end of the detachable cover 900, the detachable cover 900 can be fixed to the rear cover 300 with screws in a portion where the temperature is unlikely to rise. .. Further, since the removable cover upper surface 914 is arranged between the front cover top surface 210 and the main body case top surface 110, heat conduction between the front cover 200 and the rear cover 300 can be suppressed.

The outline of one aspect of the present invention is as follows.
[Item 6-1]
The main body case (100) for storing electrical equipment and
A front cover (200) arranged in front of the main body case (100) and
A rear cover (300) arranged behind the main body case (100) and
A removable cover (900) that is detachably arranged on the top surface (310) of the rear cover and has a lower thermal conductivity than the rear cover (300).
Electrical equipment (1000).

[Item 6-2]
The first opening region to the third opening region (370 to 374) are arranged on the rear cover top surface (310).
The item (6--) is characterized in that the detachable cover (900) is provided with a plurality of holes (930) communicating with at least a part of the first opening region to the third opening region (370 to 374). The electrical equipment (1000) according to 1).

[Item 6-3]
The detachable cover (900) is
The first area (920) and
The second area (922) and
A boundary region (926) arranged between the first region (920) and the second region (922) is provided.
A plurality of holes (930) are arranged in each of the first region (920) and the second region (922).
Holes (930) are not arranged in the boundary region (926).
The width at the boundary region (926), and the width between the first region (920) and the second region (922) is larger than the distance between two adjacent holes (930). The electrical equipment (1000) according to the featured item (6-2).

[Item 6-4]
The first opening region to the third opening region (370 to 374) on the top surface (310) of the rear cover are the first opening region (370) facing the first region (920) of the removable cover (900). And the second opening region (372) facing the second region (922) of the detachable cover (900).
The rear cover top surface (310) is arranged between the first opening region (370) and the second opening region (372), and is located at the boundary region (926) of the removable cover (900). Opposing boundary plates (376) are arranged and
The surface of the removable cover (900) on the top surface (310) side of the rear cover is provided with a claw portion (940) that meshes with the boundary plate (376) of the rear cover (300). The electrical equipment (1000) according to the item (6-3).

[Item 6-5]
The plurality of holes (930) are avoided on the surface of the removable cover (900) on the top surface (310) side of the rear cover in each of the first region (920) and the second region (922). A rib portion (950) having a shape similar to that is arranged,
The item (6-4) is characterized in that the rib portion (950) is housed in each of the first opening region (370) and the second opening region (372) of the rear cover (300). The electrical equipment (1000) described.

[Item 6-6]
The detachable cover (900) is attached to the rear cover (900) at the end of the removable cover (900) in the direction connecting the first region (920) and the second region (922). The electrical equipment (1000) according to any one of items (6-3) to (6-5), wherein a screw hole (960) for attaching to the 300) is arranged.

[Item 6-7]
The front cover top surface (210) is arranged so as to cover the main body case top surface (110).
Items (6-1) to (6-6), wherein the removable cover (900) is arranged between the front cover top surface (210) and the main body case top surface (110). The electrical equipment (1000) according to any one of the above items.

The present invention has been described above based on examples. This embodiment is an example, and it will be understood by those skilled in the art that various modifications are possible for each of these components or combinations of each processing process, and that such modifications are also within the scope of the present invention. ..

In the first to third embodiments, the inner case 160 houses a conversion circuit as an electric device. However, the present invention is not limited to this, and for example, a secondary battery may be housed in the inner case 160 as an electric device. According to this modification, the degree of freedom of configuration can be improved.

Any combination of Examples 1 to 3 is also valid. According to this modification, the effect of any combination of Examples 1 to 3 can be obtained.

100 Main body case (outer case), 110 Main body case top surface (main body case top surface), 112 Main body flange, 116 Main body case side surface, 118 Handle, 122 Main body case back surface, 124 Bottom cover, 126 Main body case bottom surface, 128 Bottom surface Opening, 130 Main body opening, 132 Fixing bracket, 134 Piping hole, 150 Storage space, 152 Opening space, 154 Inner wall, 156 Terminal, 160 Inner case, 162 Inner case top surface, 164 Exhaust fan, 166 Heat sink, 168 Inner case side, 170 inner case bottom, 172 inner case opening, 180 electrical equipment lid, 190 inclined surface, 192 horizontal plane, 194 middle part, 196 opening, 198 screw hole, 200 front cover, 210 front cover top surface (front) Cover top surface), 212 heat sink, 216 front cover side surface, 220 front cover front surface, 300 rear surface cover, 310 rear surface cover top surface (rear surface cover top surface), 312 rear surface flange, 314 notch, 316 rear surface cover side surface , 322 Rear cover back, 326 back cover bottom, 328 rear opening, 350 shield, 360 slit, 400 piping cover, 402 piping hole, 404 cover bottom, 410 waterproof wall, 420 waterproof groove, 430 drain hole, 500 wiring cover , 510 1st flange, 512 2nd flange, 514 3rd flange, 520 cover part, 530 sealing groove part, 600 1st heat sink (heat sink), 602 mounting surface, 604 heat dissipation fin, 610 reactor element (circuit part), 612 Coil (circuit component), 614 transformer (circuit component), 616 connection surface, 620 first storage groove (storage groove), 622 second storage groove (storage groove), 624 third storage groove (storage groove), 626th Storage groove (storage groove), 700 second heat sink (another heat sink), 702 mounting surface, 704 heat dissipation flange , 710 Control board (circuit parts), 712 circuit (circuit parts), 800, 810 Air path (air path), 900 Detachable cover, 910 Detachable cover top surface, 912 Detachable flange, 914 Detachable cover top surface, 920 1st Area, 922 2nd area, 924 3rd area, 926 boundary area, 930 holes, 940 claws, 950 ribs, 960 screw holes, 1000 electrical equipment.

Claims (5)

The main body case for storing electrical equipment and
A front cover arranged in front of the main body case and
A rear cover arranged behind the main body case and
It is provided with a removable cover that is detachably arranged on the top surface of the rear cover and has a lower thermal conductivity than the rear cover.
An opening area is arranged on the top surface of the rear cover.
The removable cover is provided with a plurality of holes communicating with at least a part of the opening area.
The removable cover is
The first area and
Second area and
A boundary region arranged between the first region and the second region is provided.
A plurality of holes are arranged in each of the first region and the second region.
No holes are arranged in the boundary region,
Electrical equipment characterized in that the width in the boundary region and the width between the first region and the second region is larger than the distance between two adjacent holes. The main body case for storing electrical equipment and
A front cover arranged in front of the main body case and
A rear cover arranged behind the main body case and
It is provided with a removable cover that is detachably arranged on the top surface of the rear cover and has a lower thermal conductivity than the rear cover.
An opening area is arranged on the top surface of the rear cover.
The removable cover is provided with a plurality of holes communicating with at least a part of the opening area.
The removable cover is
The first area and
Second area and
A boundary region arranged between the first region and the second region is provided.
A plurality of holes are arranged in each of the first region and the second region.
No holes are arranged in the boundary region,
The width in the boundary region and the width between the first region and the second region is larger than the distance between two adjacent holes.
The opening region on the top surface of the rear cover includes a first opening region facing the first region of the removable cover and a second opening region facing the second region of the removable cover.
On the top surface of the rear cover, a boundary plate arranged between the first opening region and the second opening region and facing the boundary region of the removable cover is arranged.
An electric facility characterized in that a claw portion that meshes with the boundary plate of the rear surface cover is provided on the surface of the removable cover on the top surface side of the rear surface cover. On the top surface side surface of the rear surface cover in each of the first region and the second region of the detachable cover, rib portions having a shape so as to avoid the plurality of holes are arranged.
The electrical equipment according to claim 2 , wherein the rib portion is housed in each of the first opening region and the second opening region of the rear cover. A screw hole for attaching the detachable cover to the rear cover is arranged at the end of the detachable cover and at the end in the direction connecting the first region and the second region. The electrical equipment according to any one of claims 1 to 3. The top surface of the front cover is arranged so as to cover the top surface of the main body case.
The electrical equipment according to any one of claims 1 to 4 , wherein the removable cover is arranged between the top surface of the front cover and the top surface of the main body case.

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