JP2001144475A - Enclosure for electronic device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air cooling structure which is provided with both suction and exhaust holes on the surface of itself and never fail suction and exhaust functions even if its enclosure is adjacent to another enclosure or it is installed in contact with a wall or the like. SOLUTION: The enclosure 10 of an electronic device is provided with protrusions 14 and 16 of almost H shape, and a rectangular recess 18 at the lower half of the H shape includes a suction hole 20 and a rectangular recess 22 at the upper half thereof includes an exhaust hole 24. Further, at least two protrusions 40 which have the same height as a tip 30 projecting most outward at the center of the protrusion 14 are provided at a desired place on the protrusion 14, so that the protrusion 40 and tip 30 may not be on the same straight line.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a housing for electronic equipment.

[0002]

2. Description of the Related Art In general, an electronic device such as a desktop computer has a structure in which a plurality of component mounting boards in which various electronic components are incorporated are separated from each other inside a device housing. In such an electronic device, large heat is generated from the component mounting board. In addition, a plurality of component mounting boards are arranged, and in recent years, with the miniaturization of electronic devices, it has become increasingly important to increase the density of electronic components. Increasingly. Therefore, when such an electronic device is operated for a long time, the temperature inside the device increases due to the heat generated from each electronic component, and further heat is generated from the electronic component as the temperature rises. In this case, each electronic component cannot exhibit its original functions and characteristics, or the deterioration of the electronic component is promoted, so that a design target life cannot be achieved or a failure occurs.

[0003] Such an electronic device has an air-cooling structure, thereby cooling a substrate that generates heat and avoiding damage to the device. The air cooling structure generally includes an intake hole and an exhaust hole. These air intake and exhaust holes are realized as a plurality of pores provided in the device housing. Air cooling is the following process (1)
This is performed by repeating (3) to (3). That is, (1) the air heated by the heat generated by the board expands and the specific gravity becomes lighter, so it rises vertically upward inside the equipment housing, and (2) the air that rises inside the equipment housing is exhausted as it is. (3) The inside of the device housing is exhausted,
This is a process of sucking air from the outside of the device housing having a high air pressure into the inside of the housing through an air intake hole due to the negative pressure. Such a method is called natural air cooling. In some cases, a fan is provided in the vicinity of the intake hole, and the fan artificially flows outside air into the housing.

[0004] For natural air cooling, the exhaust holes must be located above the intake holes. This is because the warmed air is carried upward and exhausted. In addition, there is a method in which an intake hole and an exhaust hole are provided on different surfaces of a device housing as in the related art described later. It is desirable to form an enclosure with a plurality of surfaces provided with an intake hole and an exhaust hole above, and both of the intake and exhaust holes. Therefore, conventionally, a method has been adopted in which the intake and exhaust holes are provided on the same surface among the surfaces constituting the device housing.

[0005]

When a large number of attached electronic devices are required, such as a large computer, not only one housing but also a plurality of housings are required. For example, when an electronic device as a storage medium is added, device housings having the same shape are connected in series to the main computer and arranged side by side. The problem to be solved here is that the pores of the housings arranged adjacent to each other are closed with each other, which hinders cooling. In order to solve such a problem, Japanese Patent Application Laid-Open No. H11-68372 and Japanese Patent Application Laid-Open No. H10-270879 are known as conventional techniques. Japanese Patent Application Laid-Open No. H11-68372 discloses an electronic device having a structure in which a projection is provided on a housing of an electronic device, and when the housings are adjacent to each other, the projections come into contact with each other to secure a space for intake and exhaust. Are described.

However, for example, a housing provided with a projection described in Japanese Patent Application Laid-Open No. 11-68372 cannot cope with a case in which the housing is shifted vertically or horizontally and adjacent to each other. In the case shown in FIG. 1 of the same publication, when the cases are installed on bases having different heights and are adjacent to each other while being shifted in the vertical direction, the heights of the protrusions extending in the horizontal direction are different, and the protrusions are different from each other. They cannot be in contact with each other, thereby blocking the suction space or the exhaust space of another housing. In FIG. 3 of the publication, the casings do not engage with each other due to the displacement in the vertical direction.
It is clear that the housings engage with each other due to the displacement in the horizontal direction.

[0007] In FIG. 5 of Japanese Patent Application Laid-Open No. H11-68372, although the air intake / exhaust holes are not closed, the air cooling structure is not fixed for each case, and cases having different air cooling structures must be combined. No. In such a case, a user who adds or combines equipment must purchase new equipment while paying attention to the air-cooling structure of the equipment housing to be purchased, which is cumbersome, and also requires the producer. In addition, it is necessary to prepare a plurality of production lines for manufacturing casings having different structures, which causes a burden in terms of cost and the like.

Japanese Patent Application Laid-Open No. H11-68372 originally has an intake hole or an exhaust hole provided only in one region of the housing surface divided by protrusions. That is, a certain housing surface is responsible for only one of intake and exhaust. This structure is disclosed in
The same applies to Japanese Patent No. 70879. On the other hand, the present invention deals with an efficient air-cooling structure of an equipment housing in which both intake and exhaust holes are provided in the same housing surface. Under these preconditions,
Usually, the same type of pores that face each other, such as the intake holes or the exhaust holes, must have an appropriate interval so that these pores are not blocked, and at the same time, the intake space formed by the intake holes. And heat exchange between the exhaust holes formed by the exhaust holes should be as small as possible. This is because, in these different spaces, air having different temperatures, that is, cold air and warm air, respectively flows, so that when both airs are mixed, the cooling efficiency is reduced. As described above, the air-cooling structure provided with both the intake and exhaust holes in the same plane, which is handled by the present invention, is efficient, but has a large requirement to be satisfied.

Japanese Patent Application Laid-Open No. H11-68372 deals only with a case where devices are adjacent to each other, and Japanese Patent Application Laid-Open No. H10-270879 deals only with a case where the device is against an obstacle such as a wall. On the other hand, the object of the present invention is both in the case of adjacent devices and in the case of obstacles such as walls.

As described above, the problem to be solved by the present invention is that the same housing surface constituting the housing is provided with both the air intake and exhaust holes, and one efficient housing surface is in charge of both air intake and exhaust. In an air-cooled structure, when an equipment housing is installed adjacent to another equipment housing or in close contact with a wall or the like, it is necessary to secure an appropriate space between intake holes or exhaust holes facing each other, and This is a reduction in heat exchange between the intake space created by the holes and the exhaust space created by the exhaust holes. If the former is not achieved, the intake holes or the exhaust holes block each other to prevent cooling, and if the latter is not achieved, the exhausted warm air flows into the intake holes to which the cool air should flow. This is because there is a problem in that

The present invention solves the above-mentioned drawbacks of the prior art, and an electronic device that does not lose its efficient cooling function even when the equipment housings are installed adjacent to each other or close to other obstacles. An object of the present invention is to provide an air-cooled structure of equipment.

[0012]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention has at least one opening opened in a substantially horizontal direction, and has a housing body for housing an electronic device, and a housing body mounted on the housing body. And a cover portion that covers the opening, the cover portion is substantially at the center of the cover portion,
A first protrusion that extends in a horizontal direction in a state of being mounted on the housing main body and protrudes in a horizontal direction substantially perpendicular to the direction of extension; A first recess having a first ventilation opening formed in a region above the first projection,
A second concave portion having a second ventilation opening formed in a region below the first convex portion when mounted on the housing main body; and a first concave portion substantially formed on the first convex portion when mounted on the housing main body. A second projection extending upward and downward from the first projection in a direction orthogonal to the first projection, and the height of the projection of the second projection is at most
Is equal to the protruding height of the projection.

Further, in the present invention, at least two projections having the same height as the outermost protruding tip of the first protruding portion are formed so that the first and second protruding portions are not located on the same straight line. It can be provided at any position on the second convex portion.

According to the present invention, when the device housings are adjacent to each other, the convex portions come into contact with each other, and the intake holes or the exhaust holes provided in the concave portions do not block each other.
Also, due to the surface shape of the projections, the contact between the projections reduces heat exchange between the intake space and the exhaust space.

According to the present invention, when the device comes into close contact with an obstacle such as a wall, the device comes into contact with the obstacle by the tip at the center of the convex portion and at least two projections provided on the convex portion, so that the device is stable. While obtaining point support, the air intake and exhaust holes are not blocked.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of an air-cooling structure of an electronic device according to the present invention. In the drawings, the same reference numerals denote the same elements, and elements irrelevant to the configuration of the present invention are omitted. FIG. 1 is a perspective view showing a first embodiment of the present invention. The electronic device housing 10 houses, for example, an electronic substrate 12 including a power supply or the like therein, and in the present embodiment, a housing main body 10a having a substantially rectangular parallelepiped shape as a whole, and at least one opening 10b opened substantially in the horizontal direction. It consists of.

The opening 10b is covered by a front cover 14 and a rear cover 16 mounted on the housing body 10a. Since the front cover 14 and the rear cover 16 are symmetrical as shown in FIG.
The same applies to the back cover 16. The front cover 14 has a substantially center extending in a horizontal direction (X direction on the coordinate axis in FIG. 1) in a state where the front cover 14 is mounted on the housing body 10a, and is substantially perpendicular to the extending direction. A first protrusion 14a protruding in the horizontal direction (same Y direction), and upward and downward from both ends of the first protrusion 14a in a direction (same Z direction) substantially orthogonal to the first protrusion. A substantially H-shaped protrusion composed of the extending second protrusion 14b is formed. The height of the protrusion of the second protrusion 14b is at most equal to the height of the protrusion of the first protrusion 14a.

In the present embodiment, in order to perform efficient cooling by natural air cooling, the intake hole is located below, and the exhaust hole for exhausting heat generated by the electronic substrate 12 inside the equipment housing 10 is located above. Then, intake and exhaust are performed. Therefore, H-shaped
The downwardly open rectangular recess 18 located in the lower half of 14 includes an intake hole 20, and the upwardly open rectangular recess 22 located in the upper half of the H-shape includes an exhaust hole 24. The recesses 18 and 22 are shaped like a scoop, and the inlet 20 and the outlet 24 are completely separated by the H-shape.

FIG. 2 is a front view of FIG. 2 showing the embodiment of FIG.
As shown in (b), for the sake of convenience, the H-shape 14 is
The three-dimensional shape will be described in section 28. The surfaces of the two regions 26 long in the vertical direction (Z direction) on both sides of the H-shaped 14
As shown in the side view (c) of FIG. 2, the shape has a contour of an elliptical arc of an ellipse having a major axis in the vertical direction (Z direction). Then, as shown in the plan view (a) of FIG.
And 16 have a trapezoidal shape from this point of view. That is, the line extending horizontally along the surface of the convex portion 14 or 16 through the tip portion 30 that protrudes outward from the center of the convex portion 14 or 16 is long in the vertical direction (Z direction) on both sides of the H-shape. It is a straight line until it reaches the two regions 26. Then, this straight line is bent after reaching the region 28, while maintaining an elliptic arc, a linear shape or an arbitrary curvature, the surface of the region 26 is retracted toward the side, and the plan view of the convex portion 14 is substantially trapezoidal. I do.

The exhaust hole 24 at the top of the H-shape 14 shown in FIG.
The open area (exhaust hole area) SOUT is calculated from the power consumption value inside the device and the design target value of the internal temperature. The opening area (suction hole area) SIN of the suction hole portion 20 below the H-shape 14 is preferably about 80% of the exhaust hole area SOUT. That is, it follows the following equation (1).

[0021]

SIN ≒ SOUT × 0.8 (1) FIG. 3 is a perspective view when the device housings 10 are adjacent to each other.
At this time, the space where the intake holes 20 face each other is the intake space.
The space where the exhaust holes 24 face each other is called an exhaust space. FIG. 4 shows a view of FIG. 3 from the side.
The area GIN of the wedge-shaped side projection surface 36 of the intake space shown by the hatched portion in FIG. 4 and the area GOUT of the wedge-shaped side projection surface 38 of the exhaust space shown by the hatched portion are determined by the respective openings of the intake and exhaust holes. The area SIN and SOUT should be at least twice as large to secure a sufficient cooling function. That is, an elliptical arc shape (FIG. 2 (c)) that forms the convex portion 14 or 16 when the device housing 10 is viewed from the side so as to satisfy the following expressions (2) and (3). Body 10
When viewed from above, a trapezoidal shape (FIG. 2 (a)) forming the convex portion 14 or 16 is formed.

[0022]

## EQU2 ## GIN ≧ SIN × 2 (2) GOUT ≧ SOUT × 2 (3) As shown in FIG. And two wall-hanging fixing projections 40 having the same height as. Each projection 40 and the tip portion 30 are not located on the same straight line but are provided so as to form a triangle.

Since the present embodiment has the above-described air cooling structure, as shown in FIG. A space 32 or an exhaust space 34 is formed. Here, the present embodiment is compared with the conventional air-cooled structure shown in FIG. In the conventional air cooling structure shown in FIG. 6, when the housings 42 are adjacent to each other, as shown in FIG. 7, the air intake and exhaust holes are closed. It is clear that the air intake / exhaust hole is closed even when it is applied to a wall and the cooling function is lost. On the other hand, in order to prevent the intake and exhaust holes from being blocked by an obstacle such as a wall, a conventional device housing 44 having a substantially I-shape viewed from above is shown in FIG. A conventional housing 46 having a projection 45 (similar to FIG. 3 of JP-A-11-68372) is shown.
See Figure 10. In the case where the equipment housings in the conventional air cooling structure are adjacent to each other, the housings are shifted from the normal adjacent state in the horizontal direction, for example, as shown in FIG.
There is a problem that the intake and exhaust holes are blocked. However, in this embodiment, even if the housing 10 is shifted from the state shown in FIG. 5A, which is a plan view of a normal adjacent state, to the state shown in FIG. Absent. Further, a conventional air cooling structure having a horizontally extending projection 47 shown in FIG.
In the case of adjacent device casings 48 in FIG. 8372 (similar to FIG. 1), the casings are shifted in the vertical direction,
Although it is clear that the intake and exhaust holes are closed (not shown), since the present embodiment has the H-shaped convex portion, the intake and exhaust holes are not affected by such vertical displacement. It is not blocked.

In this embodiment, the air intake / exhaust hole and the air intake / exhaust space are secured for the above-mentioned vertical and horizontal adjacent displacements, and when fixed to a wall, as shown in FIG. The screw 50 is fixed to the wall 50, and together with the tip portion 30 of the H-shape 16, performs a stopper function by three-point support with respect to the wall 50. Therefore, even when fixed to a planar obstacle such as the wall 50, the air intake and exhaust holes are not closed.

Also, as described with reference to FIG.
Since the projections 14 and 16 have trapezoidal shapes as viewed from above, as shown in FIG. 4, the intake space 32 and the exhaust space 34 are in contact with each other at the portions corresponding to the upper bases of the trapezoidal shape, thereby causing heat. Replacement is reduced.

FIG. 13 is a perspective view showing a second embodiment of the present invention. The electronic device housing 110 houses an electronic substrate 112 including, for example, a power supply and the like. It consists of. Opening 11
0b is covered by a front cover 114 and a back cover 116 mounted on the housing body 110a. Since the front cover 114 and the rear cover 116 are symmetrical as shown in FIG. 13, the following description of the front cover 114 is common to the rear cover 116. The center of the front cover 114 is substantially horizontally aligned with the front cover 114 attached to the housing body 110a (FIG. 13).
The first convex portion 114a protrudes in a horizontal direction (the same Y direction) substantially perpendicular to the direction of the extension, and the first convex portion substantially extends in the first convex portion. A substantially cross-shaped convex portion composed of a first convex portion 114a and a second convex portion 114b extending upward and downward from substantially the center of the first convex portion 114a is formed in a direction (same Z direction) perpendicular to the horizontal direction. The height of the protrusion of the second protrusion 114b is at most equal to the height of the protrusion of the first protrusion 114a.

The rectangular recesses 118 located in the lower left and lower right quarters of the cross shape include the intake holes 120, and the rectangular recesses located in the upper left and upper right quarters of the cross shape.
122 includes an exhaust port 124. Inlet 120 and exhaust 124
Are completely separated from each other by such a cross shape.

FIG. 14 is a front view of FIG. 14 showing the embodiment of FIG. 13 in three views.
As shown in (b), for the sake of convenience, the cross shape 114 is formed by two vertical portions 126 long in the vertical direction (Z direction), two horizontal portions 128 long in the horizontal direction (X direction), and a cross shape. The three-dimensional shape will be described by dividing it into a central portion 129 that intersects. The surface of the vertical portion 126 is shown in the side view (c) of FIG.
As shown in the figure, the shape has an elliptical arc of an ellipse having a major axis in the vertical direction (Z direction) as a contour. FIG. 14 plan view
As shown in (a), the surface of a certain area near the central part 129 of the surface of the lateral part 128 is flat, and this flat area ends at most before the wall-hanging fixing projection 140. As shown in the plan view (a), the surface of the lateral portion 128 other than the fixed plane region has a shape that outlines an elliptical arc of an ellipse having a major axis in the horizontal direction (X direction). The contour may be, for example, a straight line or a contour that maintains a constant curvature as long as the surface of the lateral portion 128 is retracted toward the side and the projection 114 has a substantially trapezoidal plan view. The surface of the central portion 129 is flat.

The opening area (exhaust hole area) of the exhaust hole 124 at the upper left quadrant and the upper right quadrant of the cross projection 114 shown in FIG. calculate. Also in the second embodiment, similarly to the first embodiment, the area of the exhaust hole, the opening area (the area of the intake hole) of the intake hole 120 in the lower left quadrant and the lower right quadrant of the cross,
The area of the side projection plane of the intake / exhaust space complies with the equations (1) to (3). As shown in a hatched portion in FIG. 15 which is a side view of the state in which the housings 110 are adjacent to each other, the side projection surface 13 in the second embodiment is shown.
The shapes of 6 and 138 are rectangular, unlike the wedge in the first embodiment. This is because the shape of the convex portions 114 and 116 is a cross shape.

As shown in FIG. 13, similarly to the first embodiment, the surfaces of the projections 114 and 116 of the equipment casing 110 also have the same height as the tip 130 at the center of each projection. Two wall-hanging fixing projections 140 are provided. In the present embodiment, three projections 140 are provided. However, it is sufficient if three points can be supported on a wall or the like. Therefore, at least two projections 140 that are not on the same straight line as the tip 130 may be provided.

In the second embodiment, as in the first embodiment, the air intake / exhaust hole and the air intake / exhaust space are secured for vertical and horizontal adjacent displacements, and the projection 140 functions as a stopper against the wall even when fixed to the wall. Fulfill. Further, as described with reference to FIG. 14 (a), since the projections 114 and 116 are trapezoidal when viewed from above, heat exchange between the intake space and the exhaust space is reduced.

As described above, the first and second embodiments of the present invention have been described as applied to an air cooling structure using natural air cooling without using a fan. However, it goes without saying that the present invention can be applied not only to natural air cooling but also to an air cooling structure using a fan. Further, in the embodiments of the present invention, only the H-shaped and cross-shaped convex portions are shown, but these are merely examples, and any shape that can avoid blocking of the intake and exhaust holes due to vertical and horizontal adjacent displacement, such as X-shaped and The present invention can be applied to a T-shape, an h-shape that is not symmetric, and the like.

[0033]

As described above, according to the present invention, a necessary and sufficient space for air intake and exhaust can be ensured when the same equipment housing is adjacently arranged. Further, the heat exchange between the intake space and the exhaust space is reduced by the convex shape, and the cooling effect does not decrease due to the mixture of the warm air and the cool air.

Furthermore, the tip of the convex portion such as an H-shape and the respective projections for fixing to the wall allow a three-point support and fixation to an obstacle such as a wall, so that a stable equipment housing can be installed. It is possible to secure a necessary and sufficient space for intake and exhaust.

In addition, since the wall-hanging fixing projection can be installed at an arbitrary position on the surface of the convex portion such as an H-shape, the projection is inconspicuous in design even when the wall-mounting is not installed.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a three-view drawing of FIG. 1;

FIG. 3 is a perspective view showing the first embodiment of the present invention adjacent to the first embodiment.

FIG. 4 is a side view of FIG. 3;

FIG. 5 is a plan view of FIG. 3;

FIG. 6 is a view showing a conventional air cooling structure.

FIG. 7 is a view in which the conventional air cooling structure of FIG.

FIG. 8 is a view showing a conventional air-cooling structure having a substantially I shape when viewed from above.

9 is a plan view in which the conventional air cooling structure of FIG. 8 is adjacent.

FIG. 10 is a view showing a conventional air cooling structure using vertical projections.

FIG. 11 is a view showing a conventional air cooling structure using horizontal projections.

FIG. 12 is a side view in which the first embodiment of the present invention is fixed to a wall.

FIG. 13 is a perspective view showing a second embodiment of the present invention.

FIG. 14 is a three-view drawing of FIG. 13;

FIG. 15 is a side view adjacent to a second embodiment of the present invention.

[Explanation of symbols]

 10, 110 Device housing 14, 16, 114, 116 Convex portion 40, 140 Wall-hanging fixing protrusion 18, 118 Intake recess 20, 120 Intake hole 22, 122 Exhaust recess 24, 124 Exhaust hole

 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Shinobu Matsubara 1-7-12 Toranomon, Minato-ku, Tokyo Oki Electric Industry Co., Ltd. (72) Inventor Yasuo Mizutori 1-6-1, Uchisaiwaicho, Chiyoda-ku, Tokyo d NTT Communications Inc. (72) Inventor Tomohiro Makoto 1-6 Uchisaiwaicho, Chiyoda-ku, Tokyo NTT Communications Inc. F-term (reference) 5E322 BA01 BA05

Claims (14)

[Claims] 1. An electronic device, comprising: a housing body having at least one opening opened in a substantially horizontal direction and housing an electronic device; and a cover mounted on the housing body and covering the opening. In the housing, the cover portion extends substantially at the center of the cover portion in a horizontal direction in a state where the cover portion is mounted on the housing body, and a horizontal direction substantially perpendicular to the extending direction. A first convex portion protruding from the first main body; a first concave portion having a first ventilation opening formed in a region above the first convex portion when the first main body is mounted on the housing main body; A second concave portion having a second ventilation opening formed in a region below the first convex portion when mounted, and substantially orthogonal to the first convex portion when mounted on the housing body. And a second protrusion extending upward and downward from the first protrusion in a direction in which the second protrusion projects. A housing for an electronic device, which is at most equal to the height of the projection of the first convex portion. 2. The housing for an electronic device according to claim 1, wherein the second convex portion of the cover portion is attached to the housing main body from both ends of the first convex portion. A housing for an electronic device, wherein the housing extends above and below the electronic device. 3. The housing for an electronic device according to claim 1, wherein the second convex portion of the cover portion is attached to the main body of the housing from substantially the center of the first convex portion. A housing for an electronic device, wherein the housing extends upward and downward. 4. The housing for an electronic device according to claim 2, wherein the first convex portion extends from substantially the center of the cover portion in a horizontal direction when mounted on the housing body. Accordingly, the height of the protrusion of the first protrusion is maintained or reduced, and the second protrusion moves upward and downward from both ends of the first protrusion in a state of being mounted on the housing body. As the protrusion extends, the height of the protrusion of the second protrusion is kept constant or decreases, and the height of the protrusion of the second protrusion is further attached to the housing body. A case for an electronic device, which is held or lowered in a horizontal direction in a state. 5. The electronic device housing according to claim 3, wherein the first convex portion extends from substantially the center of the cover portion in a horizontal direction in a state where the first convex portion is mounted on the housing main body. Accordingly, the height of the protrusion of the first convex portion is kept constant or decreases, and as the second convex portion extends upward and downward in a state where the first convex portion is mounted on the housing main body, Second
Wherein the height of the projection of the projection is kept constant or reduced. 6. The housing for an electronic device according to claim 4, wherein upper and lower portions of the cover portions mounted on the two housings coincide with each other in a state of being mounted on the housing main body. When each of the cover portions is opposed to and adjacent to each other, the second convex portion connecting the height of the protrusion of the edge in the horizontal direction of the two second convex portions facing each other extends upward. The area surrounded by the two trajectories and the straight line connecting the upper ends of the two trajectories is at least twice the opening area of the exhaust hole, and the second area connecting the heights 2 downwards where the protrusion extends
An enclosure for an electronic device, wherein an area surrounded by two trajectories and a straight line connecting the lower ends of the two trajectories is at least twice as large as the opening area of the air inlet. 7. The electronic device housing according to claim 5, wherein upper and lower portions of the cover portions mounted on the two housings are aligned with each other in a state of being mounted on the housing main body. When each of the cover portions is opposed to and adjacent to each other, two substantially L-shaped contour lines formed by the depth and the upward length of the first concave portion facing each other, and the two contours The area of a rectangle surrounded by a straight line passing through each upper end of the line is at least twice the opening area of the exhaust hole, and is defined by the depth and the downward length of the second concave portions facing each other. Two substantially L-shaped contour lines,
An enclosure for an electronic device, wherein the area of a rectangle surrounded by a straight line passing through the lower ends of the two contour lines is at least twice the opening area of the intake hole. 8. The housing for an electronic device according to claim 1, wherein the cover has at least the same height as an outermost tip of the first projection. A housing for an electronic device, comprising: two projections, wherein the projections are provided on the first or second projection so as not to be located on the same straight line as the tip. 9. A cover of a housing for an electronic device which is attached to an opening opened in a substantially horizontal direction of a housing for accommodating the electronic device and covers the opening. A first protrusion that extends in a horizontal direction in a state of being mounted on the housing and protrudes in a horizontal direction substantially perpendicular to the direction of the extension; A first recess having a first ventilation opening formed in a region above the first projection, and a second ventilation formed in a region below the first projection when mounted on the housing body. A second concave portion having an opening formed therein, and a second concave portion extending upward and downward from the first convex portion in a direction substantially orthogonal to the first convex portion when mounted on the housing body. A height of the protrusion of the second protrusion is at most equal to the height of the protrusion of the first protrusion. Cover of the housing of the equipment. 10. The cover of a housing for an electronic device according to claim 9, wherein the second convex portion of the cover is provided with the first protrusion.
A cover for a housing for an electronic device, which extends upward and downward from both ends of a convex portion of the electronic device when mounted on the housing body. 11. The cover of the housing for an electronic device according to claim 9, wherein the second projection of the cover is provided with the first protrusion.
A housing for an electronic device, wherein the housing extends upward and downward from a substantially central portion of the convex portion when mounted on the housing main body. 12. The cover of an electronic device housing according to claim 10, wherein the first convex portion extends from substantially the center of the cover in a horizontal direction when mounted on the housing main body. As a result, the height of the protrusion of the first protrusion is kept constant or decreases, and the second protrusion moves upward and downward from both ends of the first protrusion while being attached to the housing body. The height of the protrusion of the second protrusion is maintained or reduced as the protrusion of the second protrusion extends, and the height of the protrusion of the second protrusion is further attached to the housing body. A cover for a housing for an electronic device, wherein the cover is held or lowered in a horizontal direction in a folded state. 13. The cover of the housing for an electronic device according to claim 11, wherein the first convex portion extends from substantially the center of the cover in a horizontal direction when mounted on the housing body. As the height of the projection of the first projection is kept constant or decreases, and as the second projection extends upward and downward in a state of being mounted on the housing body, The height of the protrusion of the second projection is kept constant or decreases, and the cover of the housing for an electronic device is characterized in that the height of the projection is kept constant or reduced. 14. The cover for an electronic device casing according to claim 9, wherein the cover has the same height as a tip of the first projection that protrudes outmost. An electronic device housing having at least two projections, wherein the projections are provided on the first or second projections so as not to be located on the same straight line as the tip. Body cover.