JP3115376U - Electrical equipment cabinet - Google Patents

Abstract

[PROBLEMS] To respond to the design requirement of exposing the square shape of a slit-shaped heat radiation hole to the outer surface of a cabinet body, and to suppress the load bias to the corner corner where the heat radiation hole is squared to prevent damage. Providing electrical equipment cabinet to prevent.
A perforated section (A) is formed in a cabinet body (1) made of a resin molding by arranging a plurality of heat radiation holes (2) in the form of vertically long rectangular slits side by side. The hole wall surface 22 of the corner 21 of the corner of the heat radiating hole 2 is divided into two regions, a visible region Z1 having an angular shape located on the outer surface side of the cabinet body 1 and an invisible region Z2 located on the inner surface side of the cabinet body 1. The invisible area Z2 is pushed out from the visible area Z1 to the inside of the heat radiating hole 2 in a stepped shape, and the invisible area Z2 is formed into a recessed arc shape.
[Selection] Figure 3

Description

  The present invention relates to an electric equipment cabinet, and more particularly to an electric equipment cabinet in which a cabinet body is formed of a resin molded body and a plurality of slit-shaped heat radiation holes are formed in such a cabinet body.

  2. Description of the Related Art Conventionally, it has been widely used to let heat inside a cabinet escape to the outside by a vent hole provided in the cabinet of the television receiver (see, for example, Patent Document 1). Further, it has been known that a circular sound emitting hole provided in a housing of a television receiver is formed with a fine hole in order to make it difficult to see from the outside (see, for example, Patent Document 2). Furthermore, in a cathode ray tube type display device, it is proposed to provide a plurality of slits over the entire width of the shield plate with the intention of reducing the secondary magnetic field generated from the top shield plate for blocking electromagnetic waves. (For example, refer to Patent Document 3). Among these, Patent Document 1 has a description that the vent hole exerts an action of releasing heat generated inside the electronic device to the outside, and a vertically long rectangular vent hole in which four corners are squared is illustrated. Has been.

On the other hand, in the electrical equipment cabinet of the example shown in FIG. 5, the perforated section A formed by arranging a plurality of vertically elongated rectangular slit-like heat radiation holes 2 side by side is formed in the cabinet body 1 made of a resin molded body. The hole wall surfaces of all the corner corners 21 of the heat radiating holes 2 are formed in a rectangular shape at right angles, and the square shape is exposed on the outer surface of the cabinet body 1. When the electrical equipment cabinet is configured in this way, it can be said that the load applied to the cabinet body 1 is biased to the corners of the corners of the individual heat radiating holes 2 and cracks are likely to occur in the corners. The same applies to the cabinet described in the above-mentioned Patent Document 1.
Japanese Patent Laid-Open No. 11-4393 (0003, FIG. 2) JP-A-7-59184 Japanese Patent Laid-Open No. 7-336086

  Therefore, with respect to the cabinet described with reference to FIGS. 5 and 6, as a measure for preventing the cabinet body 1 from being damaged by cracks or cracks at the locations where the heat radiation holes 2 are formed, the thickness of the cabinet body 1 is partially set. Although it is effective to increase the overall strength by increasing the thickness, this does not only increase the material requirements and increase the material cost, but also increases the weight of the cabinet and reduces the weight of the electrical equipment. It becomes difficult to plan.

  Further, when the heat radiation hole is formed by the round hole shown in the above-mentioned Patent Document 2 or the end edge is formed in an arc shape like the slit shown in Patent Document 3, It is thought that the cabinet body 1 is less likely to be damaged by cracks or cracks at the locations where the heat radiation holes 2 are formed because the angular portion at the mouth edge disappears and the load bias is suppressed. However, on the other hand, if a round hole with a size that does not cause inconvenience in appearance is used as the heat dissipation hole, the opening area tends to be insufficient, and it is difficult to satisfy the heat dissipation performance required for the heat dissipation hole. In addition, by forming the slit-like heat radiation hole into a rectangular shape having a square shape, it becomes impossible to meet the design requirement of exposing the square shape to the outer surface of the cabinet body.

  The present invention has been made in view of the above situation and problems, and in an electric equipment cabinet, the shape of the heat radiation hole provided in the cabinet body is formed in a slit shape to enhance the heat radiation performance required for the heat radiation hole. It is possible to meet the design requirement of exposing the square shape of the heat dissipation hole to the outer surface of the cabinet body, while reducing the load bias to the cornered corner where the heat dissipation hole is square. An object of the present invention is to provide an electrical equipment cabinet that can suppress and prevent the cabinet body from cracking or cracking at the location where the heat dissipation holes are formed without increasing the thickness of the cabinet body. To do.

  In addition, the present invention makes it easier to reduce the thickness and weight of the cabinet body by taking measures that can prevent the cabinet body from being cracked or broken at the location where the heat dissipation holes are formed. An object is to provide an electrical equipment cabinet.

  In the electric equipment cabinet according to the present invention, a perforated section formed by arranging a plurality of slit-shaped heat radiation holes side by side is formed in a cabinet body made of a resin molded body. And the hole wall surface of all the corner corners of the heat radiating hole is located on the outer surface side of the cabinet body and on the inner surface side of the cabinet body, and protrudes from the visible region to the inside of the heat radiating hole. The hole wall surface is divided into an invisible region, and the hole wall surface is formed in an angular shape in the visible region, and the angular shape is exposed on the outer surface of the cabinet body, whereas the indented region is recessed in the invisible region. It is shaped like an arc.

  If this configuration is adopted, the load applied to the cabinet body is not mainly biased to the arc-shaped invisible region of the hole wall surface of the corner corner of the heat radiating hole, and is not biased to the visible region. The load is distributed because it is arcuate. For this reason, it is difficult for the cabinet body to be cracked or broken at the place where the heat radiating holes are formed. In addition, while the outer surface of the cabinet body is exposed to the square shape of the visible area of the hole wall, the non-angular invisible area of the hole wall surface is difficult to see from the outside. Therefore, it is possible to meet the design requirement of exposing the square shape of the heat radiating hole to the outer surface of the cabinet body.

  In the present invention, it is desirable that the hole wall surface be partitioned into two regions, the visible region and the invisible region. According to this, even if the thickness of the cabinet body is not increased, the visible region and the invisible region can be formed without difficulty in the corner of the hole wall of the heat radiating hole.

  In the present invention, it is possible to adopt a configuration in which the heat radiating holes are formed in a vertically long shape, and the invisible regions of the hole wall surfaces of the two corner corners adjacent in the lateral direction are continuous in an arc shape. It is. According to this, since it is possible to form an invisible region of the hole wall surface of each corner corner even in the arc shape even if the width of the heat dissipation hole is narrowed, the inside of the cabinet body is hardly visible through the heat dissipation hole. It becomes possible to reduce the lateral width of the heat radiation hole.

  In the present invention, it is preferable that the hole wall surface is continuous without forming a step in the vertically long hole wall surface positioned in the width direction of the heat dissipation hole in both the visible region and the invisible region. According to this, a situation in which the load is not biased to the boundary portion between the hole wall surface of the corner corner of the heat dissipation hole and the vertically long hole wall surface does not occur, and the cabinet body is cracked or cracked at the position where the heat dissipation hole is formed. The situation of damage is further suppressed.

  An electrical equipment cabinet according to the present invention includes a cabinet body formed of a resin molded body, in which a perforated section is formed by arranging a plurality of vertically long rectangular slit-shaped heat radiation holes side by side, and all corners of the heat radiation holes are provided. In the electric equipment cabinet as a liquid crystal television receiver cabinet, the wall surface of the hole is formed in an angular shape and the angular shape is exposed on the outer surface of the cabinet body. The wall surface is divided into two regions, a visible region located on the outer surface side of the cabinet body and an invisible region located on the inner surface side of the cabinet body, and the invisible region of the hole wall surface from the visible region to the inside of the heat dissipation hole Two tops that are adjacent to each other in the horizontal direction by forming a stepped shape and forming an invisible region of the hole wall into a recessed arc. The invisible area of the hole wall surface of the corner of the corner is continuous in an arc shape, and the hole wall surface has a step on a vertically long hole wall surface positioned in the width direction of the heat dissipation hole in both the visible area and the invisible area. It is possible to adopt a configuration in which they are continuous without being formed. According to this, in a liquid crystal television receiver that easily generates internal heat, the cabinet body at the location where the heat dissipation holes are formed even though the appearance of the heat dissipation holes for releasing the internal heat to the outside is a vertically long rectangle. It becomes possible to suppress the situation that a crack and a crack generate | occur | produce and damage.

  As described above, according to the present invention, the shape of the heat radiating hole of the cabinet body can be formed in a slit shape to improve the heat radiating performance required for the heat radiating hole, and the square shape of the heat radiating hole can be made to be a cabinet. Responding to the design requirements of exposing to the outer surface of the main body, suppressing the uneven load on the corner corner where the heat radiating holes are angular, and forming the heat radiating holes without increasing the thickness of the cabinet body It is possible to prevent the cabinet body from being cracked or cracked at the location and being damaged. Therefore, the effect that it becomes easy to aim at the weight reduction through thickness reduction of a cabinet main body is also show | played.

  FIG. 1 is a plan view of an electrical equipment cabinet according to an embodiment of the present invention, and FIG. 2 is a rear view thereof. 3 is an enlarged view of a portion III in FIG. 1, and FIG. 4 is a cross-sectional view of a portion along line IV-IV in FIG.

  The electric equipment cabinet shown in FIGS. 1 and 2 corresponds to a rear cabinet of a liquid crystal television receiver, and a front panel or the like (not shown) is assembled to the rear cabinet. In addition, a liquid crystal panel, a drive circuit, a power supply circuit, and the like are accommodated in a housing formed of a rear cabinet and a front cabinet.

  In the illustrated cabinet, perforated sections A are formed at a plurality of locations on a cabinet body 1 made of a resin molded body. In the illustrated example, perforated sections A are respectively formed at predetermined positions on the upper and lower sides and the left and right sides of the bulging portion 12 provided in the cabinet body 1, and the perforated sections A have a plurality of vertically radiating rectangular slits. The holes 2 are arranged side by side. Further, by forming one heat radiating hole 2 in a vertically long slit shape, the heat radiating hole 2 is provided with satisfactory heat radiating performance.

  As shown in FIG. 3, each heat radiating hole 2 is provided with four corners 21 in total. In addition, as shown in FIG. 4, the hole wall surface 22 of each corner corner 21 has two regions, a visible region Z1 located on the outer surface side of the cabinet body 1 and an invisible region Z2 located on the inner surface side of the cabinet body 1. The invisible region Z2 is projected in a stepped shape from the visible region Z1 to the inside of the heat radiating hole 2 and is formed into an arc shape in which the hole wall surface 22 is recessed in the invisible region Z2. In this embodiment, the thickness of the cabinet body 1 around the heat radiating hole 2 is formed to be about 2 to 2.5 mm, and the visible region Z1 and the invisible region Z2 described above are the thicknesses of 2 to 2 mm. The width of the visible region Z1 and the invisible region Z2 (the length in the thickness direction of the cabinet body 1) is determined to be, for example, 1 mm each. Further, the lateral width of each heat radiating hole 2 is set to about 2 mm so that the inside of the cabinet body 1 is difficult to see through the heat radiating hole 2. Note that the pitch of the plurality of heat radiation holes 2.

  As described above, in the heat radiating hole 2 formed in the cabinet body 1 having a thickness of about 2 to 2.5 mm and having a width of about 2 mm, the corner 21 is invisible to the visible region Z1 having a width of about 1 mm. When partitioned into the region Z2, it is confirmed that the visible region Z1 is visible from the outside, but the invisible region Z2 is hidden behind the visible region Z1 and the shape is almost invisible from the outside.

  In all four corner corners 21 of the heat radiating holes 2, the visible region Z <b> 1 described above is formed in an angular shape at right angles, as shown in the partial enlarged view of FIG. 3. Therefore, when the user looks at the cabinet body 1 from the outside, the vertical rectangular slit-like heat radiation holes 2 in which the corners 21 are formed at right angles are formed in the perforated section A of the cabinet body 1 side by side. Will look like.

  On the other hand, as shown in the partial enlarged view of FIG. 3, in the invisible region Z2 of the corner corner 21, the hole wall surface 22 of the corner corner 21 is formed in an arc shape, specifically, a quarter arc shape. Yes. Moreover, in this embodiment, by setting the radius of the ¼ arc of the hole wall surface 22 of the invisible region Z2 to a dimension that is half the width of the heat radiating hole 2, the two corner corners 21 adjacent in the lateral direction are adjacent. , 21 invisible regions Z2 and Z2 of the hole wall surface are continuous in an arc shape. As described above, since the invisible region Z2 is hidden behind the visible region Z1 and the shape thereof is hardly visible from the outside, even if the user looks at the cabinet body 1 from the outside, the end edge of the heat radiating hole 2 is arcuate. It can be said that there is almost no recognition that it is.

  And the hole wall surface 22 of the corner corner 21 of each heat radiation hole 2 does not form a step in the vertically long hole wall surface 23 positioned in the width direction of the heat radiation hole 2 in both the visible region Z1 and the invisible region Z2. It is continuous.

  According to this embodiment, the load applied to the cabinet body 1 during a strength test according to the UL standard or other handling is mainly caused by the arc-shaped invisible region Z2 of the hole wall surface 22 of the corner 21 of the heat radiation hole 2. Since it is received, the load is hardly applied to the angular visible region Z1, and the load is dispersed in the invisible region Z2 to which the load is applied because the shape is an arc. Therefore, it is difficult for the cabinet body 1 to be cracked or broken at the place where the heat radiating holes 2 are formed. In addition, with respect to one heat radiating hole 2, the invisible regions Z2 and Z2 of the hole wall surfaces 22 and 22 of the two corner corners 21 and 21 adjacent in the lateral direction are continued in an arc shape. Although the width of 2 is as narrow as 2 mm, the invisible region Z2 of the hole wall surface 22 of each of the corner corners 21 and 21 can be formed into an arc without difficulty.

  In this embodiment, the invisible region Z2 for the hole wall surface 22 of the corner corner 21 of the heat radiation hole 2 is formed in an arc shape, but this point may be formed in an arc shape that is not an accurate arc shape. . Further, depending on the width of the heat radiating hole 2, the invisible regions Z2 and Z2 of the hole wall surfaces 22 and 22 of the adjacent corner corners 21 and 21 can be formed in a discontinuous form.

  In this embodiment, a liquid crystal television receiver cabinet is shown as an example of a cabinet. However, in this respect, the present invention can be applied to a projector cabinet and other electrical equipment cabinets.

  Furthermore, in this embodiment, since the invisible area Z2 of the corner 21 of the heat radiation hole 2 is pushed out from the visible area Z1, the corner corner 21 having such a shape can be easily formed. It becomes possible, and it is also suitable for mass production of the cabinet body 1.

It is a top view of the electric equipment cabinet which concerns on embodiment of this invention. It is the same rear view. It is the III section enlarged view of FIG. It is sectional drawing of the part which follows the IV-IV line | wire of FIG. It is a top view of the principal part of the electric equipment cabinet which has a vertically long rectangular heat radiating hole. It is sectional drawing of the part which follows the VI-VI line of FIG.

Explanation of symbols

1 Cabinet body 2 Radiation hole 21 Corner corner 22, 23 Hole wall surface A Apertured space Z1 Visible area Z2 Invisible area

Claims (5)

In the cabinet body made of resin molding, a perforated section is formed by arranging a plurality of vertically rectangular slit-shaped heat radiation holes side by side, and the hole wall surfaces of all corners of the heat radiation holes are formed in an angular shape In the electrical equipment cabinet as a liquid crystal television receiver cabinet whose cornered shape is exposed on the outer surface of the cabinet body,
The hole wall surface of all corners of the heat radiating holes is divided into two regions, a visible region located on the outer surface side of the cabinet body and an invisible region located on the inner surface side of the cabinet body. By making the invisible region protrude from the visible region to the inside of the heat dissipation hole in a stepped shape and forming the invisible region of the hole wall surface into a recessed arc shape, the two corner corners adjacent to each other in the lateral direction are formed. The invisible region of the hole wall surface is continuous in an arc shape, and the hole wall surface does not form a step on the vertically long hole wall surface positioned in the width direction of the heat dissipation hole in both the visible region and the invisible region. Electrical equipment cabinet characterized by being continuous. In the electrical equipment cabinet in which a perforated section formed by arranging a plurality of slit-shaped heat radiation holes side by side in the cabinet body made of a resin molded body,
The invisible area where the hole wall surface of all corners of the heat radiating hole is located on the outer surface side of the cabinet body and the inner surface side of the cabinet body and protrudes from the visible area to the inside of the heat radiating hole The hole wall surface is formed in an angular shape in the visible region, and the angular shape is exposed on the outer surface of the cabinet body, whereas the hole wall surface is in an arc shape recessed in the invisible region. Electrical equipment cabinet characterized by being shaped. The electrical equipment cabinet according to claim 2, wherein the hole wall surface is divided into two regions, the visible region and the invisible region. The electric device according to claim 2 or 3, wherein the heat radiating hole is formed in a vertically long shape, and the invisible regions of the hole wall surfaces of the two corner corners adjacent in the horizontal direction are continuous in an arc shape. cabinet. 5. The electrical equipment cabinet according to claim 4, wherein the hole wall surface is continuous without forming a step on a vertically long hole wall surface positioned in the width direction of the heat radiation hole in both the visible region and the invisible region.

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