JPH11211155A - Electrical box and casing - Google Patents

Abstract

(57) [Summary] When a circuit board is provided on one side of a casing of an electrical component box and a heat sink is provided on the other side, the circuit board may be inclined and it may be difficult to tighten screws. In an electric component box, a circuit board is provided in a concave portion on an upper side of a main portion of a box-shaped casing.
The plurality of heat sinks 7a and the connecting wire attachment portions 6h are
a. The surface including the lower end 6i of the connecting line attachment portion 6h and the end 7b of the heat sink 7a was made substantially parallel to the circuit board 5. The circuit board 5 can be supported horizontally, and the circuit board 5 can be easily screwed. The lower convex portion of the casing 6 and the upper concave portion 6c are overlapped in a plan view,
A plurality of casings 6 can be stacked in a nested manner, and the package is compact. [Effect] Reduction of assembly cost and transportation cost.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrical component box for accommodating and arranging electrical components such as a circuit board inside an electrical device or the like, and a casing therefor.

[0002]

2. Description of the Related Art For example, in the case of an outdoor unit of an air conditioner, the above-mentioned electrical component box is disposed in a housing separately from an air passage room and an equipment room in which a heat exchanger and the like are disposed. The electrical component box includes a resin casing, electrical components such as a circuit board and a capacitor housed in the casing, and a radiating member having a large number of radiating plates.

[0003] The casing has, for example, a plate-shaped main portion for holding a circuit board, a side wall rising from an end of the main portion, and a cylindrical shape for holding a capacitor which is arranged adjacent to the circuit board. And a capacitor holding section.
In addition, near the one end of the casing, a mounting plate for mounting the terminal block, a waterproof wall, and the like are erected from the main body toward the side opposite to the side wall. Further, the heat radiating member is attached to one end of the casing so as to protrude to the same side as the mounting plate, adjacent to the mounting plate.

[0004]

However, if there is a convex portion such as a mounting plate or a heat sink near one end of the casing,
When the projection is turned down, the circuit board attached to the casing is inclined and is not horizontally supported. For this reason, assembly work such as screwing of the circuit board is difficult.

[0005] In addition, the casing in which the mounting plate or the like protrudes tends to be bulky when transported, so that the transport cost is high. Therefore, the main object of the present invention is to
An object of the present invention is to solve the above-mentioned technical problems and to provide an electrical component box that can be easily assembled. It is another object of the present invention to provide a casing for an electrical component box having a projection, which can reduce the size of a package during transportation.

[0006]

In order to achieve the above object, an electric component box according to the first aspect of the present invention comprises a box-shaped casing having a main body, and a circuit board held on one side of the main body. And an electric component box provided on the other side of the main body with a plurality of heat sinks protruding from the main body, wherein the casing has a convex portion protruding from the main body on the same side as the direction in which the heat sink protrudes. The surface including the tip of the projection and the tip of the heat sink is substantially parallel to the circuit board.

According to this configuration, the following operation is achieved.
That is, when the projection of the casing and the tip of the heat sink are placed on a table or the like, the circuit board becomes substantially horizontal, so that it is easy to perform an assembling operation such as fixing the circuit board by, for example, screwing. Here, as the above-mentioned convex portion, for example, a waterproof wall, a connecting line attaching portion, and a capacitor holding portion can be exemplified. In addition, to be held on one side of the main body means to be held directly or indirectly on one surface of the main body.

According to a second aspect of the present invention, there is provided an electrical box.
In the electrical component box described above, the casing has a concave section defined on the one side, and the concave section is disposed so as to overlap with the convex section in plan view. According to this configuration, the following operation is achieved in addition to the operation of the first aspect of the invention. That is, when the casings of a plurality of electrical component boxes are superimposed, by accommodating the protrusions of one casing in the recesses of the other casing, the casings can be nested and brought close to each other, Even in the case where the casing has a convex portion and is likely to be bulky, it is possible to prevent the outer shape from being bulky due to the plurality of casings and to reduce the size of the package.

According to a third aspect of the present invention, there is provided an electrical box.
In the electrical component box described in the above, the casing has a component holding portion that constitutes the convex portion and holds the electrical component therein, and at least a part of the component holding portion overlaps the circuit board in plan view. It is characterized by being arranged. According to this configuration, the following operation is achieved in addition to the operation of the second aspect of the invention. That is, since the circuit board and the component holding portion can be arranged so as to overlap each other in plan view, the planar shape of the electrical component box can be reduced. In addition, the electrical components held inside the component holding unit can also be arranged so as to overlap the circuit board. As a result, it is possible to further reduce the packing style of the plurality of electrical component boxes.

According to a fourth aspect of the present invention, there is provided an electric component box casing according to any one of the first to third aspects, wherein the concave portion defined on one side and the other side are provided. And the convex portion is arranged so as to be accommodated in the concave portion so as to overlap with the concave portion in a plan view. According to this configuration, the following operation is achieved. That is, when a plurality of casings are overlapped, the appearance of the plurality of casings can be reduced by accommodating the protrusions of one casing in the recesses of the other casing.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An outdoor unit of an air conditioner having an electric component box according to an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a front sectional view of a schematic configuration of an outdoor unit of an air conditioner including an electrical component box according to an embodiment of the present invention.

The outdoor unit 1 is used by being connected to an indoor unit (not shown), and the indoor unit and the outdoor unit 1 constitute an air conditioner. The indoor unit and the outdoor unit 1 each include a heat exchanger, and both heat exchangers are connected to each other. Both heat exchangers, between which a heat transfer material such as a refrigerant can be moved,
The heat received in one heat exchanger is configured to be released in the other heat exchanger.

The outdoor unit 1 includes a box-shaped housing 2 forming an internal air passage, a blower 3 for introducing outside air into the internal air passage,
It has a heat exchanger 4 for exchanging heat with an airflow introduced into the internal air passage, and an electrical component box 9 including a circuit board 5.
The electrical component box 9 is arranged in the housing 2 so that the circuit board 5 can radiate heat by the airflow from the blower 3.

The interior of the housing 2 is partitioned by a first chamber 2a in which a blower 3 and a heat exchanger 4 are disposed, and a first chamber 2a and a partition plate 27 for a compressor (not shown) for heat exchange. Are divided into a second chamber 2b in which the components are arranged and an inner chamber 2d of the electrical component box 9 disposed above the second chamber 2b. These rooms communicate with each other to form an internal air passage, and also communicate with the outside of the machine.

When the blower 3 is operated, the air flows from the opening on the rear surface of the housing 2 through the first chamber 2a to the outside through the opening on the front surface of the housing 2. In addition, the airflow flows from the opening 28a to the air guide path 2c partitioned between the right side surface portion 25 of the housing 2 and the cover 28, the opening 25a,
It flows through the internal chamber 2d to the first chamber 2a. The airflow flows from the opening 28a to the first chamber 2a through the opening 25b and the vicinity of the electrical component box 9 in the second chamber 2b.

FIG. 2 is a front view of the electrical component box of FIG.
The electrical component box 9 includes a box-shaped casing 6 having a main body 6a.
And the above-mentioned circuit board 5 held on the upper part of the main part 6a, and the heat radiating member 7 attached to the lower part of the main part 6a. The heat dissipating member 7 includes a plurality of heat dissipating plates 7
a. The heat radiating plate 7a projects downward from the main body 6a, faces the second chamber 2b, and is cooled by the airflow flowing therethrough.

The details will be described below. FIG. 3 is a plan view of a casing of the electrical component box of FIG. FIG. 4 is an exploded perspective view of the electrical component box of FIG. FIG. 5 is a perspective view of a casing of the electrical component box of FIG. FIG. 6 is a front sectional view of a casing of the electrical component box in FIG. 2. First, reference is made to FIG. 3 and FIG.

The casing 6 has the above-mentioned plate-shaped main part 6a for mounting the circuit board 5, and a side wall part 6b standing upright from the periphery of the main part 6a. A recess 6c is defined on the inside surrounded by the side wall 6b and the main body 6a. The recess 6c serves as the above-described internal chamber 2d,
Here, the circuit board 5 is directly screwed and attached to a base 6 p formed in a protruding shape on the upper surface of the main body 6 a of the casing 6. The casing 6 has openings in a pair of opposing side wall portions 6b, and the air flows through the recesses 6c through these openings.

The casing 6 has a waterproof wall 6f, a connecting line attaching portion 6h, and a capacitor holding portion 6e on the lower surface of the main portion 6a. The terminal block 10 is attached to the connecting line attachment portion 6h. The capacitor holding unit 6e holds the capacitor 8. Waterproof wall 6f
As shown in FIG. 2, is disposed on the lower left side of the main body 6a and protrudes downward from the lower surface of the main body 6a.

The connecting line attaching portion 6h is a plate-like portion projecting below the main portion 6a and extending in the front-rear direction. The connecting line attachment part 6h is formed integrally with the right end of the main part 6a. The projecting height of the distal end 6i of the connecting line attachment portion 6h is substantially equal to the height of the heat sink 7a.
The virtual surface (shown by L in FIG. 2) including the front end 6i of the heat sink 7a and the front end 7b of the heat sink 7a is substantially parallel to the circuit board 5.

The capacitor holding portion 6e is provided with the connecting wire attaching portion 6
It is provided on the right side of the main body 6a of the casing 6 adjacent to h. The capacitor holding portion 6e has a plurality of U-shaped portions 6g protruding below the main portion 6a. For example, three U-shaped portions 6g constitute one set, and straddle the set of U-shaped portions 6g, and hold one columnar capacitor 8 therein so as to penetrate therein. The capacitor holding portion 6e has two sets of U-shaped portions 6g.
Are held. One of the sets (the left side in FIG. 2) is arranged so as to overlap the circuit board 5 in plan view.

The heat radiating plates 7a are arranged in parallel with each other, are connected to each other at upper ends, and are integrally formed in a comb shape. The upper end of the heat radiating plate 7a is connected to the circuit board 6 in a state of being fitted into a fitting ridge 6n formed on the lower surface of the main body 6a. The heat radiation member 7 is arranged on the left side of the main body 6a. This casing 6 is similar to that shown in FIG.
As shown in the figure, the upper and lower parts are configured to be able to be stacked upside down.

As shown in FIG. 5, the side wall portion 6b is arranged such that the upper end edge thereof is directed downward, and the casing 6 is placed on a mounting surface such as a desk (FIG. 6).
(Shown by T in FIG. 2) so as to be stably mounted without play. When the casing 6 is placed on the placing surface in this way, the casings 6 can be stacked. That is, an abutment surface 6m is formed on the peripheral edge of the lower surface of the main body 6a, and on this abutment surface 6m, the upper end edge 6q of the side wall 6b of the casing 6 placed thereon (in this case, So that the upper edge 6q of the side wall 6b and the main body 6 can be placed.
The contact surface 6m on the lower surface of a overlaps in plan view. Upper edge 6q of side wall 6b and contact surface 6m on the lower surface of main body 6a
Are parallel to each other. Therefore, as described above, a plurality of, especially a large number of casings 6 can be easily stacked without tilting.

As shown in FIG. 3, the waterproof wall 6f
And the connecting line attaching portion 6h and the capacitor holding portion 6e
It is arranged so as to overlap with the concave portion 6c in plan view. In addition, the waterproof wall 6f, the connecting wire attaching portion 6h, and the plurality of capacitor holding portions 6e have a protrusion amount at the lower end thereof (the contact surface 6a).
m from the recess 6 of the portion where each is provided.
c (the depth from the upper edge 6q of the side wall 6b). Therefore, when a plurality of casings 6 are stacked as described above, the waterproof wall 6f of the lower casing 6, the connecting wire attaching portion 6h, and the capacitor holding portion 6e (these protrude upward). ), It can be accommodated in the concave portion 6c of the casing 6 on the upper side.

The connecting line attaching portion 6h is provided in the recess 6c by arranging the connecting line attaching portion 6h along the inside of the side wall portion 6b of the casing 6 immediately above the connecting line attaching portion 6h, as in the casings 6B and 6A of FIG. It may be arranged. The casing 6 shown in FIG.
As in B and 6C, the connecting line attachment portion 6h may be arranged along the outside of the side wall portion 6b of the casing 6 immediately above the connecting line attachment portion 6h.

As described above, according to the present embodiment, as shown in FIG. 2, the casing 6 has the connecting line attaching portion 6h as a convex portion, and the connecting line attaching portion 6h is provided on the heat radiating plate 7a. The projecting portion 6a projects downward from the main body portion 6a on the same side as the projecting direction.
2 (L in FIG. 2) is substantially parallel to the circuit board 5. Thus, when the tip 6i of the connecting line attachment portion 6h and the tip 7b of the heat sink 7a are placed along a placement surface such as a table, the circuit board 5 becomes substantially horizontal. This facilitates assembly work such as fixing the circuit board 5, and as a result, assembly costs can be reduced.

In particular, since the connecting line attaching portion 6h is disposed on the right side of the casing 6 opposite to the heat radiating plate 7a on the left side, the circuit board 5 can be stably supported, so that the work is easy. . In addition, in the above-described embodiment, the connection line attachment portion 6h is exemplified as the protrusion that allows the circuit board 5 to be substantially horizontal, but is not limited thereto.
For example, the surface including the lower end of at least one capacitor holding portion 6e and the tip 7b of the heat sink 7a is
May be made substantially parallel. Also, the waterproof wall 6f
May be. Further, a plurality of these convex portions may be provided.

As shown in FIGS. 3 and 6, an upper concave portion 6c as one side of the casing 6 and a waterproof wall 6f as a lower convex portion as the other side are connected. Since the wire mounting portion 6h and the capacitor holding portion 6e are arranged so as to overlap each other in a plan view, when the casings 6 of the plurality of electrical component boxes 9 are overlapped, the above-mentioned respective projecting portions of one casing 6 are removed. Recess 6 of other casing 6
c so that a plurality of casings 6 can be accommodated.
As a result of being able to nest
Even when the casing 6 has a convex portion and is likely to be bulky, it is possible to prevent the bulkiness of the outer shape due to the plurality of casings 6 and reduce the packing of the plurality of casings 6, thereby reducing the transport cost. it can.

In particular, the capacitor holding portion 6e constitutes a component holding portion for holding the electrical components therein, and the component holding portion overlaps the upper concave portion 6c as one side of the casing 6 in a plan view. At least a part thereof is arranged so as to protrude downward as the other side and overlap with the circuit board 5 in plan view. As a result, the planar shape of the electrical component box 9 can be reduced, and the capacitor 8, which is the electrical component held inside the component holding portion, can also be arranged so as to overlap the circuit board 5. 9 can be made even smaller.

Further, as described above, in the casing 6 of the present embodiment, a large number of casings 6 can be stably stacked, which is convenient for transportation and storage. In the above-described embodiment, the connecting line attachment portion 6h serving as a protrusion for leveling the circuit board 5 is formed integrally with the main portion 6a of the casing 6, but is not limited thereto.
It may be formed separately from the main body 6a and assembled. In short, the casing 6 has a convex portion protruding from the main portion 6a, and this convex portion is located on the same side of the heat radiating plate 7a and the main portion 6a, and the tip of this convex portion and the tip of the heat radiating plate 7a The surface including the portion 7b may be substantially parallel to the circuit board 5.

In the above embodiment, the heat sink 7a
Extends in a direction orthogonal to the main body 6a and projects downward along the direction, but is not limited to this. For example, the heat radiating plate 7a may extend in a direction inclined with respect to the main body 6a and protrude downward. In addition, the connection line attachment portion 6h may be provided on the lower surface of the main body portion 6a and have a tip protruding downward. In this manner, the projecting portion for leveling the circuit board 5 may be such that the projecting direction and the projecting direction of the heat radiating plate 7a are on the same side with respect to the main body 6a, and the tips are mainly formed. What is necessary is just to be on the same side with respect to the part 6a.

In the above embodiment, the circuit board 5
Was directly held on the base 6p as a support formed integrally with the upper surface of the main body 6a of the casing 6, but is not limited to this. For example, the circuit board 5
It may be indirectly attached to the upper surface of the main body 6a of the casing 6 via a columnar support member formed separately from the main body 6a. In short, the circuit board 5 only needs to be held at a position on one side of the main body 6a.

In addition, various design changes can be made without changing the gist of the present invention.

[0034]

According to the first aspect of the present invention, the surface including the tip of the convex portion of the casing and the tip of the heat sink is made substantially parallel to the circuit board, so that the circuit board is substantially horizontal. For example, assembling work such as screw tightening can be performed easily, so that assembling cost can be reduced.

According to the second aspect of the invention, in addition to the effects of the first aspect, the concave portion on one side of the casing and the convex portion on the other side are arranged so as to overlap in plan view. As a result, the casings of the plurality of electrical component boxes can be nested and brought close to each other, and the packaging of the plurality of casings can be reduced. As a result, the transportation cost can be reduced. According to the third aspect of the present invention, in addition to the effect of the second aspect, at least a part of the component holding portion constituting the convex portion is disposed so as to overlap with the circuit board in plan view. Accordingly, the planar shape of the electrical component box can be reduced, and the held electrical components and the circuit board can be arranged so as to overlap each other, so that the package of the plurality of electrical component boxes can be further reduced.

According to the fourth aspect of the present invention, the convex portion and the concave portion are arranged so as to overlap in a plan view so that the concave portion defined on one side can accommodate the convex portion on the other side. When stacking a plurality of casings, the adjacent casings can accommodate the projections in the recesses, and the packing of the casings can be reduced.

[Brief description of the drawings]

FIG. 1 is a front sectional view of a schematic configuration of an outdoor unit of an air conditioner including an electrical component box according to an embodiment of the present invention.

FIG. 2 is a front view of the electrical component box of FIG.

FIG. 3 is a plan view of a casing of the electrical component box in FIG. 2;

FIG. 4 is an exploded perspective view of the electrical component box of FIG. 2;

5 is a perspective view of a casing of the electrical component box of FIG. 2,
This shows a state viewed from the rear lower side.

FIG. 6 is a front sectional view of a casing of the electrical component box in FIG. 2;

[Explanation of symbols]

 Reference Signs List 5 Circuit board 6 Casing 6a Main part 6c Depression 6e Capacitor holding part (part holding part) 6f Waterproof wall (convex part) 6h Connecting line attaching part (convex part) 6i Tip 7a Heat sink 7b Tip 9 Electrical component box

Claims (4)

[Claims] 1. A box-shaped casing (6) having a main body (6a).
A circuit board (5) held on one side of the main body (6a);
In an electrical component box (9) including a radiator plate (7a) on the other side of the main unit (6a) protruding from the main unit (6a) and a plurality of radiator plates (7a) arranged in a direction in which the radiator plate (7a) projects. And a projection (6h) projecting from the main body (6a) on the same side as
The electrical component box, wherein a surface including the tip (6i) of the h) and the tip (7b) of the heat sink (7a) is substantially parallel to the circuit board (5). 2. The electrical component box (9) according to claim 1, wherein said casing (6) has a recess (6) defined on said one side.
c), wherein the concave portion (6c) is arranged so as to overlap with the convex portion (6h) in plan view. 3. The electrical component box (9) according to claim 2, wherein the casing (6) includes a component holding portion (6e) that forms the convex portion and holds the electrical component (8) therein. At least a part of the component holding part (6e) includes a circuit board (5)
An electrical component box, wherein the electrical component box is arranged so as to overlap with a plan view. 4. A casing (6) for an electrical component box according to claim 1, wherein a concave portion (6c) partitioned on one side and a convex portion provided on the other side. (6e, 6f, 6h), and the convex portion (6e, 6f, 6h) has a concave portion so as to be accommodated in the concave portion (6c).
(6c) A casing of the electrical component box, wherein the casing is arranged so as to overlap in plan view.