JP7108943B2 - electrical equipment - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to electrical equipment, and more particularly to electrical equipment that houses electrical equipment.

Heat generated in the power element module of the power converter is released to the outside of the power converter by a fan installed in the power converter. However, in the process, polluted air from the outside flows into the inside of the power converter, and dust or foreign matter also enters and accumulates inside the power converter. Therefore, the internal heat exchanger in the case is provided with a heat exchange medium passage, the heat exchange medium passage and the inside of the case are isolated from each other, and the heat transferred to the internal heat exchanger is released to the outside of the case. (See Patent Document 1, for example).

Japanese translation of PCT publication No. 2016-517262

In order to miniaturize electrical equipment such as power converters, it is required to improve heat dissipation performance.

The present invention has been made in view of such circumstances, and an object thereof is to provide a technique for improving heat dissipation performance.

In order to solve the above problems, an electrical equipment according to one aspect of the present invention includes a housing having a hollow structure, a radiator arranged outside the housing, and a first electric device arranged inside the housing. , and a second electrical device arranged outside the housing. The mounting surface included in the housing is provided with an opening penetrating the outer surface and the inner surface, the first electric device is disposed on the inner surface with at least a portion thereof exposed through the opening, and the radiator comprises: a second portion facing the outer surface, a first portion protruding from the second portion toward the outer surface, a box-shaped storage portion provided on the opposite side from the second portion, and the second portion has heat radiating fins protruding to the opposite side, the first part of the heat sink is inserted into the opening of the mounting surface and attached in contact with the exposed part of the first electrical device, and the second part of the heat sink The portion is spaced apart from the outer surface, and the second electrical device is housed within the housing .

According to the present invention, heat dissipation performance can be improved.

1(a) and 1(b) are perspective views showing the structure of the electrical equipment according to the first embodiment. FIGS. 2(a)-(b) are perspective views showing the structure of the inner housing of FIGS. 1(a)-(b). 3(a)-(b) are diagrams showing the structure of the electrical equipment of FIGS. 1(a)-(b). 4(a)-(b) are perspective views showing the structure of the radiator of FIG. 1(b). Fig. 1(a)-(b) illustrates the conduction of heat in the electrical installation; 6(a) and 6(b) are diagrams showing the structure of the electrical equipment according to the second embodiment.

(Example 1)
Before specifically describing the embodiments of the present invention, an outline of the embodiments will be described. Example 1 relates to an electric facility that accommodates an electric device that generates heat, such as a power conversion device. Examples of electrical equipment are IGBTs (Insulated Gate Bipolar Transistors), reactors, and the like, but components other than electrical equipment are also housed in electrical equipment. In order to reduce the size of such electrical equipment, it is necessary to efficiently dissipate the heat generated by the electrical equipment. The electrical equipment according to this embodiment has the following structure in order to improve the heat radiation performance.

The electrical equipment is formed in a donut-shaped double shell consisting of an inner housing and an outer housing, and the inner housing is provided with ventilation holes penetrating through the inner housing. Due to the double shell structure, the area where the inside air generated by the electrical equipment and the like can dissipate heat to the outside through the inner housing and the outer housing is increased, so that the heat radiation performance is improved. Furthermore, since the ventilation holes inside the inner housing are also used as a heat dissipation part, the heat dissipation performance is improved.

Also, in the electrical equipment, the board is arranged between the outer circumference of the inner housing and the inner circumference of the outer housing. Electrical devices that can be mounted on the board (hereinafter referred to as "first electrical devices") are placed on the board, but electrical devices that cannot be mounted on the board (hereinafter referred to as "second electrical devices") are separated from the board. placed in the air vent. The second electrical device is connected to the board via a harness or the like. Since the first electric device and the second electric device are separated and arranged at different positions in this way, the heat-generating portions are dispersed and the heat radiation performance is improved.

Furthermore, although the radiator is arranged in the ventilation hole, the radiator is separated from the inner housing except for the portion where the radiator contacts the first electrical device. Also, the second electric device is housed in the radiator. Since the contact area between the radiator and the outside air is increased, the heat radiation efficiency to the outside air is improved. In addition, since the heat generated by the second electric device is less likely to be conducted into the inner housing, the heat dissipation performance requirements of the inner housing are reduced. In the following description, "parallel" and "perpendicular" include not only perfectly parallel and perpendicular, but also deviate from parallel and perpendicular within a margin of error. Moreover, "substantially" means that they are the same within an approximate range.

1(a) and 1(b) are perspective views showing the structure of the electrical equipment 1000. FIG. 2(a) and 2(b) are perspective views showing the structure of the inner housing 100. FIG. As shown in FIGS. 1(a)-(b), an orthogonal coordinate system is defined consisting of x, y, and z axes. The x-axis and y-axis are orthogonal to each other within the bottom surface of the electrical equipment 1000 . The z-axis is perpendicular to the x- and y-axes and extends in the height (vertical) direction of the electrical installation 1000 . In addition, the positive directions of the x-axis, y-axis, and z-axis are defined in the directions of the arrows in FIGS. . In addition, the positive direction of the x-axis is "front" or "front", the negative direction of the x-axis is "back" or "back", the positive direction of the z-axis is "top" or "top", and the negative direction of the z-axis is "back" or "back". The direction side is sometimes called "bottom" or "bottom". Furthermore, the y-axis direction is sometimes called a "side surface".

The electrical installation 1000 includes an inner housing 100 , an outer housing 200 , a base 300 , a substrate 402 and a radiator 500 . Inner housing 100 includes inner housing front surface 112 , inner housing side surface 114 , inner housing rear surface 116 , inner housing bottom surface 118 , opening 140 , top plate 150 , side plates 152 , bottom plate 154 , and fan 160 . Outer housing 200 includes outer housing top surface 210 , outer housing front surface 212 , outer housing side surface 214 , outer housing rear surface 216 , and slit 230 . Heatsink 500 includes a first portion 540 . The components of the inner housing 100, the outer housing 200, the base 300, and the radiator 500 are connected by screws, welding, adhesives, or the like. Description is omitted here. The same applies to connections between the inner housing 100, the outer housing 200, the base portion 300, and the radiator 500. FIG. Also, a plurality of components may be integrally formed.

The inner housing 100 includes an inner housing front surface 112 arranged on the front side, an inner housing side surface 114 arranged on the side surface side, an inner housing rear surface 116 arranged on the rear side, and an inner housing rear surface 116 arranged on the rear side. It has a cylindrical shape surrounded by the inner housing bottom surface 118 . The inner housing front surface 112, the inner housing side surface 114, and the inner housing rear surface 116 are formed of substantially rectangular metal plates elongated in the height direction. A space surrounded by the inner housing front surface 112 , the inner housing side surface 114 , and the inner housing rear surface 116 is the ventilation hole 130 . Therefore, the ventilation hole 130 is arranged inside the inner housing 100 whose upper side is open. In the following description, the surfaces of the inner housing front surface 112, the inner housing side surface 114, and the inner housing rear surface 116 on the side of the ventilation hole 130 are referred to as "inner surfaces". The surface of the housing rear surface 116 opposite to the ventilation holes 130 is sometimes referred to as the "outer surface."

An inner housing bottom surface 118 arranged below the inner housing front surface 112, the inner housing side surface 114, and the inner housing rear surface 116 is formed of a substantially rectangular metal plate. A base portion 300 is attached to the lower side of the inner housing bottom surface 118 . The base portion 300 supports the inner casing 100 from below, and may have any shape.

The outer housing 200 includes an outer housing top surface 210 arranged on the upper side, an outer housing front surface 212 arranged on the front side, an outer housing side surface 214 arranged on the side surface side, and an outer housing side surface 214 arranged on the rear side. It has a cylindrical shape surrounded by the rear surface 216 of the outer housing. The lower side of the outer housing 200 is open, and it is possible to cover the outer housing 200 from the upper side of the inner housing 100 . In other words, the outer housing 200 is detachable from the inner housing 100, and is arranged so as to cover the outer circumference of the inner housing 100 when attached.

The front surface 212 of the outer housing, the side surface 214 of the outer housing, and the rear surface 216 of the outer housing are formed of substantially rectangular metal plates elongated in the height direction. Further, the outer housing top surface 210 is formed of a substantially rectangular metal plate, and has a plurality of slits 230 arranged therein. Each slit 230 vertically penetrates the top surface 210 of the outer housing. With such a plurality of slits 230 , even when the outer housing 200 is attached to the inner housing 100 , the ventilation holes 130 of the inner housing 100 are exposed to the outside air.

The radiator 500 is arranged in the ventilation hole 130 in the inner housing 100 . Although the shape of the radiator 500 will be described later, the two first portions 540 provided on the front surface of the radiator 500 are exposed through the two openings 140 provided on the front surface 112 of the inner housing. The two openings 140 have a rectangular shape and are arranged side by side in the vertical direction on the inner housing front surface 112 . The two first portions 540 have shapes matching the two openings 140 . A substrate 402 is attached to the front side of the inner housing front surface 112 so as to block the opening 140 and the first portion 540 . Further, a top plate 150 is arranged above the substrate 402 , a side plate 152 is arranged on the side surface side of the substrate 402 , and a bottom plate 154 is arranged below the substrate 402 so as to surround the substrate 402 . Top plate 150 , side plate 152 , and bottom plate 154 all extend forward from substrate 402 . Furthermore, a fan 160 is attached to the upper side of the top plate 150 . In such a structure, top plate 150 to bottom plate 154 , fan 160 , and substrate 402 are arranged in the space between the outer circumference of inner housing 100 and the inner circumference of outer housing 200 .

3(a)-(b) show the structure of the electrical installation 1000. FIG. 3(a) is a top view of the electrical equipment 1000, and FIG. 3(b) is a cross-sectional view of the inner housing 100. FIG. As previously mentioned, inner housing 100 is bounded by inner housing front surface 112 , inner housing side surfaces 114 , and inner housing rear surface 116 . A substrate 402 is arranged facing the outer side surface of the inner housing front surface 112, and the first electric device 400 is attached to the surface of the substrate 402 on the inner housing front surface 112 side by soldering. Therefore, the first electric device 400 and the substrate 402 are arranged in the space between the outer circumference of the inner housing 100 and the inner circumference of the outer housing 200 . A plurality of components, which are arbitrary elements, may be attached by soldering to the surface of the substrate 402 on the side of the inner casing front surface 112 . The first electric device 400 is, for example, a heat-generating semiconductor element such as an IGBT. It is mountable to the substrate 402 as it has terminals for mounting to the substrate 402 . The surface of the first electrical device 400 opposite to the substrate 402 is exposed from the opening 140 of the inner housing front surface 112, and the exposed portion is attached with the first portion 540 of the radiator 500. FIG.

Before describing the mounting of the heat sink 500, the structure of the heat sink 500 will be described using FIGS. 4(a)-(b). 4(a) and 4(b) are perspective views showing the structure of the radiator 500. FIG. The radiator 500 includes a first portion 540 , a second portion 542 , a lid 544 , a housing portion 550 and heat radiating fins 560 . Here, FIG. 4(a) shows the structure with the lid 544 removed, and FIG. 4(b) shows the structure with the lid 544 attached. A planar second portion 542 is arranged on the front side of the radiator 500 , that is, on the side of the inner housing front surface 112 , and two first portions 540 are arranged in the second portion 542 . The first portion 540 has a shape that protrudes forward from the second portion 542 and becomes smaller as the distance from the second portion 542 increases. Also, the left portion of the second portion 542 corresponds to the lid 544 . The lid 544 has a surface that is substantially flush with the second portion 542 . A box-shaped storage portion 550 is provided on the rear side of the lid 544 . The housing part 550 is an independent closed box when the lid 544 is attached to the radiator 500 , but opens forward when the lid 544 is removed from the radiator 500 .

The second electric device 410 and the third electric device 412 are fixed inside the storage unit 550 by potting. The second electric device 410 is, for example, a reactor, and the third electric device 412 is, for example, a transformer. These are devices that generate heat. Also, the second electric device 410 and the third electric device 412 cannot be mounted on the substrate 402 because they do not have terminals for mounting on the substrate 402 . Therefore, these are connected to the board 402 via the harness 414 pulled out from the storage section 550 . A plurality of heat radiation fins 560 are arranged behind the first portion 540 and the second portion 542 . In particular, the radiating fins 560 are also arranged on the rear side of the housing portion 550 . Returning to FIGS. 3(a)-(b).

The radiator 500 is placed in the ventilation hole 130 in the inner housing 100 with the first portion 540 and the second portion 542 facing the inner surface of the inner housing front surface 112 . Therefore, the second electric device 410 and the third electric device 412 are also arranged inside the ventilation hole 130 in the inner housing 100 . Here, the first portion 540 passes through the opening 140 of the inner housing front surface 112 toward the front side, and is attached in contact with the exposed portion of the first electrical device 400 . On the other hand, the second portion 542 is spaced rearward from the inner surface of the inner housing front surface 112 . With this arrangement, part of the heat generated by the first electric device 400 is radiated from the heat radiating fins 560 of the radiator 500 . On the other hand, the heat generated by the second electric device 410 and the third electric device 412 is less likely to escape to the inner housing front surface 112 due to the separation between the second portion 542 and the inner housing front surface 112, and the heat dissipation of the radiator 500 Heat is dissipated from the fins 560 . In particular, since the housing portion 550 and the heat radiation fins 560 of the radiator 500 are exposed from the slits 230 of the outer housing 200, the heat radiation effect is improved.

The first electric device 400 is fixed to the inner housing front surface 112 by arranging the radiator 500 , the inner housing front surface 112 , and the first electric device 400 . Also, the inner housing 100 and the outer housing 200 are formed of independent members. Therefore, the relative position of the first electric device 400 with respect to the inner housing 100 is the same when the outer housing 200 is attached to the inner housing 100 and when the outer housing 200 is removed from the inner housing 100. .

FIG. 5 shows the conduction of heat in electrical installation 1000 . This is shown similarly to FIG. 3(b). As described above, part of the heat generated by first electrical device 400 and the heat generated by second electrical device 410 and third electrical device 412 are radiated from radiation fins 560 of radiator 500 . Here, the rest of the heat generated from the first electric device 400 is the object of explanation. The rest of the heat generated by the first electric device 400 is radiated as internal air into the space between the outer circumference of the inner housing 100 and the inner circumference of the outer housing 200 . Such inside air is stirred by the fan 160 and moves in the space between the outer circumference of the inner housing 100 and the inner circumference of the outer housing 200 as indicated by the dotted arrows in the figure. Here, the outer housing front surface 212, the outer housing side surface 214, the outer housing rear surface 216, the inner housing front surface 112, the inner housing side surface 114, and the inner housing rear surface 116 are in contact with the outside air. Therefore, the heat contained in the inside air is transferred to the outside air through the outer housing front surface 212, the outer housing side surface 214, the outer housing rear surface 216, the inner housing front surface 112, the inner housing side surface 114, and the inner housing rear surface . waste heat. Heat dissipation is improved not only from the outer casing front surface 212, the outer casing side surface 214, and the outer casing rear surface 216, but also from the inner casing front surface 112, the inner casing side surface 114, and the inner casing rear surface 116. do.

Here, in a structure in which only the outer housing 200 is provided, if the dimensions are width 280×height 350×depth 195 (mm), the surface area of the outer housing 200 is 441700 mm ² . On the other hand, in the structure including the inner housing 100 and the outer housing 200 as in the embodiment, when the dimensions of the inner housing 100 are width 250×height 350×depth 100 (mm), the surface area is 636700 mm ² . , which increases by 44% compared to the former. In fact, the areas of the inner housing front face 112, the inner housing side face 114, the inner housing rear face 116, the outer housing front face 212, the outer housing side face 214, and the outer housing rear face 216, which are highly effective in cooling by convection, are greatly increased. Therefore, the cooling efficiency is improved by 1.4 times or more.

According to this embodiment, the first electrical device 400 is arranged in the space between the outer periphery of the inner housing 100 and the inner periphery of the outer housing 200, and the second electrical device 410 is disposed in the ventilation hole 130 of the inner housing 100. , the heat generated by these can be dispersed. In addition, since the heat generated by the first electric device 400 and the second electric device 410 is dispersed, heat dissipation performance can be improved. In addition, since the heat radiation performance is improved, the size of the inner housing 100 and the outer housing 200 can be reduced. Moreover, since the radiator 500 is arranged in the ventilation hole 130 in the inner housing 100, the radiator 500 can be exposed to the outside air. Moreover, since the radiator 500 is in contact with the outside air, the heat radiation performance can be improved. In addition, since the area where the radiator 500 is in contact with the outside air is increased, the heat radiation efficiency to the outside air can be improved.

In addition, since the first electric device 400 that can be mounted on the substrate 402 and the second electric device 410 that cannot be mounted on the substrate 402 are used, the first electric device 400 and the second electric device 410 can be arranged separately. . In addition, since the fan 160 is arranged in the space between the outer periphery of the inner housing 100 and the inner periphery of the outer housing 200, the heat in the space between the outer periphery of the inner housing 100 and the inner periphery of the outer housing 200 is can be circulated. Moreover, since heat circulates, heat can be radiated from the inner housing 100 and the outer housing 200 . Further, the relative position of the first electric device 400 with respect to the inner housing 100 is the same when the outer housing 200 is attached to the inner housing 100 and when the outer housing 200 is removed from the inner housing 100. Therefore, maintenance can be easily performed. In addition, since the inner housing 100 and the outer housing 200 are separated, the internal devices and wiring fixed to the inner housing 100 remain as they are, and maintenance can be performed while they are installed.

In addition, since the first portion 540 of the radiator 500 is in contact with the first electrical device 400 and the remaining second portion 542 is separated from the inner housing front surface 112, heat escaping from the radiator 500 to the inner housing front surface 112 is prevented. can be suppressed. In addition, since the heat escaping from the radiator 500 to the inner housing front surface 112 is suppressed, the heat dissipation performance can be improved. In addition, since the radiator 500 is provided with the storage portion 550 , the second electric device 410 can be mounted on the radiator 500 . Moreover, since the radiator 500 has the heat radiation fins 560 on the side opposite to the inner housing front surface 112 side, the heat radiation performance can be improved. In addition, since the heat generated by the second electrical device 410 and the third electrical device 412 is less likely to be transmitted to the inner housing 100 and the outer housing 200, the heat dissipation performance requirements of the inner housing 100 and the outer housing 200 can be reduced. In addition, since the heat dissipation performance requirements of the inner housing 100 and the outer housing 200 are reduced, the inner housing 100 and the outer housing 200 can be made smaller. In addition, since the independent box-shaped radiator 500 is fixed apart from the inner casing 100, the influence of heat from the radiator 500 to the inner casing 100 can be reduced.

An overview of one aspect of the present invention is as follows.
[Item 1-1]
a cylindrical inner housing (100) containing ventilation holes (130);
a cylindrical outer casing (200) arranged to cover the outer circumference of the inner casing (100);
a first electric device (400) arranged in a space between the outer circumference of the inner housing (100) and the inner circumference of the outer housing (200);
a second electrical device (410) disposed in the ventilation hole (130) in the inner housing (100);
An electrical installation (1000) comprising:

[Item 1-2]
further comprising a radiator (500) disposed in the vent (130) in the inner housing (100);
The electrical equipment (1000) according to (Item 1-1).

[Item 1-3]
further comprising a substrate (402) arranged in a space between the outer circumference of the inner housing (100) and the inner circumference of the outer housing (200);
The first electrical device (400) is mountable on the substrate (402), and
the second electrical device (410) is not mountable on the substrate (402);
The electrical equipment (1000) according to (Item 1-1) or (Item 1-2).

[Item 1-4]
further comprising a fan (160) arranged in a space between the outer circumference of the inner housing (100) and the inner circumference of the outer housing (200);
The electrical equipment (1000) according to any one of (Item 1-1) to (Item 1-3).

[Item 1-5]
The outer housing (200) is detachable from the inner housing (100),
When the outer housing (200) is attached to the inner housing (100) and when the outer housing (200) is removed from the inner housing (100), the inner housing (100) the relative position of the first electrical device (400) with respect to
The electrical equipment (1000) according to any one of (Item 1-1) to (Item 1-4).

[Item 2-1]
a first electrical device (400) disposed on one side of a surface having an opening with at least a portion exposed to the opening;
On the other side of the surface, the surface side first portion (540) contacts the first electrical device (400), and the surface side second portion (542) is spaced apart from the surface. a radiator (500);
a second electric device (410) arranged in a storage portion (550) provided in the second portion (542) of the radiator (500);
The heat radiator (500) has heat radiation fins (560) on the side opposite to the surface side,
Electrical equipment (1000).

[Item 2-2]
a cylindrical inner housing (100) containing ventilation holes (130);
Further comprising a cylindrical outer housing (200) arranged to cover the outer periphery of the inner housing (100),
said inner housing front face (112) is included in said inner housing (100);
One side of the inner housing front surface (112) is the outer peripheral side of the inner housing (100),
The other side of the inner casing front surface (112) is the ventilation hole (130) side of the inner casing (100),
The first electric device (400) is arranged in a space between the outer circumference of the inner housing (100) and the inner circumference of the outer housing (200),
the radiator (500) and the second electrical device (410) are placed in the ventilation holes (130) in the inner housing (100);
The electrical equipment (1000) according to (Item 2-1).

[Item 2-4]
further comprising a substrate (402) positioned on one side of said face;
The first electrical device (400) is mountable on the substrate (402), and
the second electrical device (410) is not mountable on the substrate (402);
The electrical equipment (1000) according to any one of (Item 2-1) to (Item 2-3).

(Example 2)
Next, Example 2 will be described. The second embodiment also relates to electrical equipment that accommodates heat-generating electrical equipment. The electrical equipment according to the second embodiment includes a radiator similar to that of the first embodiment, but has a housing with a structure different from that of the inner housing and the outer housing in the first embodiment. Here we will focus on the differences.

6(a) and 6(b) show the structures of the electric equipment 1100 and the electric equipment 1200. FIG. FIG. 6(a) shows the structure of the electrical equipment 1100, which is similar to FIG. 3(b). Housing 600 includes housing front surface 612 , housing side surfaces 614 , and housing rear surface 616 . Also, the first electric device 400, the substrate 402, and the radiator 500 are the same as those in the first embodiment.

The housing 600 has a hollow structure surrounded by a housing front surface 612 arranged on the front side, a housing side surface 614 arranged on the lateral side, and a housing rear surface 616 arranged on the rear side. In the following description, the inner surface of the housing 600 at the housing front surface 612 may be referred to as the "inner surface", and the outer surface of the housing 600 at the housing rear surface 616 may be referred to as the "outer surface". A substrate 402 is arranged to face the inner surface of the housing rear surface 616, and the first electrical device 400 is attached to the surface of the substrate 402 on the housing rear surface 616 side by soldering. Therefore, the first electric device 400 and the board 402 are arranged in the space inside the housing 600 . The surface of the first electrical device 400 opposite to the substrate 402 is exposed from the opening 640 of the housing rear surface 616, and the exposed portion is attached with the first portion 540 of the radiator 500. FIG. Therefore, second electric device 410 , third electric device 412 , and radiator 500 are arranged outside housing 600 .

At that time, the first portion 540 and the second portion 542 of the radiator 500 face the outer surface of the housing rear surface 616 . Here, the first portion 540 passes through the opening 640 of the housing rear surface 616 toward the front side, and is attached in contact with the exposed portion of the first electrical device 400 . On the other hand, the second portion 542 is spaced rearward from the outer surface of the housing rear surface 616 . With this arrangement, part of the heat generated by the first electric device 400 is radiated from the heat radiating fins 560 of the radiator 500 . On the other hand, the heat generated by the second electrical device 410 and the third electrical device 412 is less likely to escape to the housing rear surface 616 due to the separation between the second portion 542 and the housing rear surface 616 , and the heat radiation fins 560 of the radiator 500 heat is radiated from

FIG. 6(b) shows the structure of the electrical equipment 1200, which is similar to FIG. 3(b). Electrical installation 1200 is compared to electrical installation 1100 . Housing 700 includes housing front surface 712 , housing side surfaces 714 , and housing rear surface 716 . These correspond to a housing front face 612, a housing side face 614, and a housing rear face 616, respectively. Also, the first electric device 400, the substrate 402, and the radiator 500 are the same as those in the first embodiment. In housing 700 , first portion 540 and second portion 542 pass through opening 740 in housing rear surface 716 toward the front, and first portion 540 is in contact with the exposed portion of first electrical device 400 . It is attached. Therefore, the second portion 542 is also arranged inside the housing 700 . As described above, when the radiator 500 is exposed to the inside air of the housing 700 , the heat generated by the second electric device 410 and the third electric device 412 easily escapes to the inside of the housing 700 . As a result, the temperature inside the housing 700 tends to rise.

According to this embodiment, since the radiator 500 is attached to the housing 600, the flexibility of the structure can be improved.

An overview of one aspect of the present invention is as follows.
[Item 2-3]
further comprising a housing (600);
said housing back surface (616) is included in said housing (600);
one side of the housing rear surface (616) is the interior side of the housing (600);
The other side of the housing rear surface (616) is the exterior side of the housing (600),
The first electric device (400) is arranged inside the housing (600),
The radiator (500) and the second electric device (410) are arranged outside the housing (600),
The electrical equipment (1000) according to (Item 2-1).

The present invention has been described above based on the examples. It should be understood by those skilled in the art that this embodiment is merely an example, and that various modifications can be made to combinations of each component or each treatment process, and such modifications are within the scope of the present invention. .

In Examples 1 and 2, the electrical equipment 1000 is assumed to be a power converter. However, not limited to this, for example, the electrical equipment 1000 may be a storage battery instead of a power conversion device. According to this modified example, the degree of freedom in configuration can be improved.

In the first embodiment, the second portion 542 of the radiator 500 is separated from the inner housing front surface 112 . However, the structure is not limited to this and, for example, the second portion 542 of the radiator 500 may be structured so as not to be separated from the inner housing front surface 112 . According to this modification, the degree of freedom in the structure of the radiator 500 can be improved.

100 inner housing 112 inner housing front surface 114 inner housing side surface 116 inner housing rear surface 118 inner housing bottom surface 130 ventilation hole 140 opening 150 top plate 152 side plate 154 bottom plate 160 fan 200 Outer housing 210 Outer housing top surface 212 Outer housing front surface 214 Outer housing side surface 216 Outer housing rear surface 230 Slit 270 Space between housings 300 Base 400 First electric device 402 Board .

Claims (2)

a housing with a hollow structure;
a radiator arranged outside the housing;
a first electrical device arranged inside the housing;
a second electrical device arranged outside the housing,
The mounting surface included in the housing is provided with an opening penetrating the outer surface and the inner surface,
The first electrical device is disposed on the inner surface with at least a portion exposed to the opening,
The radiator has a second portion facing the outer surface, a first portion protruding from the second portion toward the outer surface, and a box-like shape provided on the opposite side from the second portion. and a radiating fin protruding on the side opposite to the second portion,
the first part of the radiator is inserted into the opening of the mounting surface and mounted in contact with the exposed part of the first electrical device;
the second portion of the radiator is spaced apart from the outer surface;
The second electric device is housed in the housing,
electrical equipment. Further comprising a substrate disposed on the inner surface ,
The first electrical device can be mounted on the substrate,
The second electrical device cannot be mounted on the substrate,
The electrical equipment according to claim 1 .

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