JP2005086081A - Housing box for electronic equipment or the like - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a housing box for electronic equipment or the like which can suppress temperature rise of the electronic equipment by efficiently ventilating the inside of the box to suppress the internal temperature rise. <P>SOLUTION: The housing box 1 for the electronic equipment or the like comprises a housing-box main body 2 in which pieces of electronic equipment E1, E2 are housed in its inside, intake ports 3 for air installed close to the lower parts of the side boards 24 or on the bottom board 21 of the housing-box main body 2, and exhaust fans 4 installed vertically penetrating the ceiling board 22 of the housing-box main body 2. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an electronic device storage box that stores electronic devices such as communication devices, and more particularly to an electronic device storage box that can cool electronic devices by efficiently ventilating the inside. is there.

  In recent years, storage boxes for storing communication devices (hereinafter referred to as “electronic devices”) such as terminal devices, exchanges, transmission devices, wireless communication devices, and communication cables have been installed outdoors. When such electronic devices are housed in the housing box, the heat generated by the electronic device itself and the heat generated by other devices increase the temperature inside the housing box and the temperature of the electronic device itself. On the other hand, electronic devices have a temperature condition (normal operating temperature) at which they can operate normally. If this temperature condition is not obtained, the function or quality of the electronic devices may be deteriorated and a failure may occur. is there. Therefore, there is an electronic equipment storage box configured to cool the electronic equipment by effectively taking outside air in order to suppress the temperature rise of the electronic equipment (see, for example, Patent Document 1).

The high-voltage power receiving equipment storage box disclosed in Patent Document 1 includes a housing, a channel base that supports the housing, and a roof body that is placed on the housing. An airflow rectifying plate is provided so as to surround the power receiving facility (electronic equipment). In addition, an intake port for taking in outside air is provided in the channel base, and an exhaust port for exhausting outside air is provided so as to open to the side surface side of the roof body. And the exhaust fan for taking in outside air and exhausting efficiently is attached to the exhaust-port vicinity, ie, the side surface side of a roof body. In the high-voltage power receiving equipment storage box configured as described above, outside air is taken into the housing from the intake port by the operation of the exhaust fan, and the introduced air is rectified by the air flow rectifying plate and blown to the power receiving equipment. The air absorbs heat generated by the power receiving facility and suppresses a temperature rise of the power receiving facility. The air thus heated is discharged from the exhaust port. As described above, the outside air is effectively taken in and the heated air is discharged, so that the temperature rise inside the housing can be suppressed and the power receiving equipment itself can be cooled.
Japanese Utility Model Publication No. 7-36513 (paragraphs 0010 and 0011, FIG. 1)

  However, in the above-described high-voltage power receiving equipment storage box, after the air heated inside the casing reaches the lower surface of the roof body on the rising airflow, it is sucked into the exhaust fan attached to the side surface, and from the exhaust port. Since it is discharged, in the vicinity of the roof body, the air that flows to the side surface side along the lower surface temporarily stays there, and a heat pool is generated in the upper part in the housing. And this heat pool had the problem that the temperature inside a housing | casing raised as a result and the temperature of power receiving equipment also raised. Therefore, when the normal operating temperature of the power receiving equipment is low, a malfunction may occur in the operation.

  Further, when the outer surface of the housing is irradiated with direct sunlight, the temperature of the housing outer surface increases, and the temperature inside the housing also increases accordingly. Therefore, there is a problem that it is difficult to obtain a suitable temperature condition in a harsh outdoor environment.

  Furthermore, when multiple electronic devices that are heat sources are installed inside the housing, if the air heated by taking heat away from the electronic devices generating a large amount of heat is blown to other electronic devices, the other electronic devices There is also a problem that it is not possible to cool the battery effectively, and malfunctions are likely to occur.

  Therefore, in the present invention, it is an object to provide an electronic equipment storage box that solves the above-described problems and that suppresses an increase in internal temperature and suppresses an increase in temperature of the electronic equipment while efficiently ventilating. To do.

  In order to solve the above-mentioned problem, in the electronic device storage box according to claim 1, a storage box main body that stores the electronic device therein, and an air inlet provided in the vicinity of the lower portion of the side plate or the bottom plate of the storage box main body, And an exhaust fan provided so as to penetrate the ceiling plate of the container box body in the vertical direction.

  According to the electronic equipment storage box according to claim 1, the outside air taken into the storage box body from the intake port absorbs heat generated from the stored electronic equipment, and the heated air is exhaust fan. Exhausted from. At this time, since the exhaust fan is provided so as to penetrate the ceiling plate in the vertical direction, the heated air reaches the ceiling plate while riding the ascending current, and is directly exhausted to the outside through the exhaust fan. Therefore, unlike the case where the exhaust fan and the exhaust port are provided on the side surface side, no heat pool is generated in the vicinity of the ceiling plate, so that an increase in temperature inside the storage box body due to the heat pool can be suppressed. In addition, since the outside air can be efficiently taken in and exhausted by the exhaust fan, the electronic devices can be effectively cooled and the normal operation of the electronic devices can be maintained. In the present invention, if the exhaust fan is exposed to the outside, raindrops or the like are likely to enter the storage box body, and the electronic devices are damaged by moisture or the like. Therefore, a cover that can cover at least the exhaust fan is provided. Is preferred.

  According to a second aspect of the present invention, in the electronic device storage box according to the first aspect, the electronic device storage box includes an exhaust hood that covers the entire top surface of the ceiling plate of the storage box body from above, and the exhaust hood is oriented horizontally or horizontally. It has a downward exhaust port.

  According to the electronic equipment storage box according to claim 2, in addition to the action of the electronic equipment storage box according to claim 1, the exhaust hood provided with an exhaust port covers the entire top surface of the ceiling plate. In addition, the air sucked into the exhaust fan is discharged to the outside through an exhaust port that is horizontal or downward from the horizontal. According to such a configuration, since the exhaust fan is not exposed to the outside, intrusion of raindrops, dust, and the like can be prevented. Moreover, since the exhaust hood covers the entire top surface of the ceiling panel, the ceiling panel can be shielded from direct sunlight and the temperature rise of the ceiling panel can be suppressed, so that the temperature increase in the storage box body can be further suppressed.

  According to a third aspect of the present invention, in the electronic equipment storage box according to the second aspect, the exhaust hood protrudes laterally from the ceiling plate, and the exhaust port is discharged along the side plate. It is characterized by being formed downward.

  According to the electronic equipment storage box according to claim 3, in addition to the action of the electronic equipment storage box according to claim 2, the air sucked into the exhaust fan is placed in the space formed by the exhaust hood and the top surface of the ceiling plate. It is discharged and exhausted downward from the space through the exhaust port. Since the air exhausted downward is blown along the outer surface of the side plate of the storage box body, the outer surface temperature of the storage box body is lowered. Therefore, even when installed in a harsh outdoor environment such as a high temperature, it is possible to suppress an increase in temperature in the storage box body. Moreover, since the exhaust port is formed downward, it is possible to further prevent intrusion of raindrops, dust, and the like.

  The invention according to claim 4 is characterized in that, in the electronic equipment storage box according to claim 2 or claim 3, the exhaust hood is detachable.

  According to the electronic equipment storage box according to claim 4, in addition to the action by the electronic equipment storage box according to claim 2 or claim 3, since the exhaust hood is configured to be removable, the exhaust hood is removed, Maintenance of the exhaust fan and the like can be easily performed.

  According to a fifth aspect of the present invention, in the electronic equipment storage box according to any one of the first to fourth aspects, the air sucked from the air inlet is intensively flowed around the electronic equipment. It has the baffle plate to be made.

  According to the electronic equipment storage box according to claim 5, in addition to the action of the electronic equipment storage box according to any one of claims 1 to 4, when outside air is taken in from the air intake, Concentrates around the equipment. Therefore, air can efficiently absorb heat from the electronic devices, and the electronic devices can be effectively cooled.

  According to a sixth aspect of the present invention, in the electronic equipment storage box of the fifth aspect, the rectifying plate is made of a heat insulating material disposed between the electronic equipment and the side plate.

  According to the electronic device storage box according to claim 6, in addition to the operation of the electronic device storage box according to claim 5, a rectifying plate is provided between the electronic device and the side plate. For this reason, when outside air is taken in from the intake port, an air flow is formed on the side plate side and the electronic device side with the rectifying plate interposed therebetween. Thus, since air can flow intensively around the electronic devices, the electronic devices can be effectively cooled. Even if the outer surface temperature of the container box rises due to direct sunlight, etc. and radiant heat is transmitted from the side plate to the inside of the container box body, it is a rectifying plate made of heat insulating material, so the radiant heat is Do not reach the air flowing between the devices. Therefore, the radiant heat to the electronic devices emitted from the side plate of the storage box body can be blocked.

  According to a seventh aspect of the present invention, in the electronic equipment storage box according to any one of the first to sixth aspects, the plurality of the electronic equipments are arranged such that the one having a larger horizontal projection area is higher. Are arranged side by side vertically.

  According to the electronic equipment storage box according to claim 7, in addition to the action by the electronic equipment storage box according to any one of claims 1 to 6, when outside air is taken in from the air inlet, Air absorbs heat from electronic devices with a small horizontal projection area disposed below, and rises while cooling them. And after cooling the electronic devices with a large horizontal projection area arranged above, it is exhausted to the outside through the exhaust fan of the ceiling board. Since the electronic devices having a small horizontal projection area are arranged below in the container box body, a wide air flow path in the vicinity of the air inlet can be secured and a large amount of outside air can be taken in. Therefore, the absorption efficiency of heat generated by electronic devices can be improved.

  According to an eighth aspect of the present invention, in the electronic equipment storage box according to any one of the first to sixth aspects, the electronic equipment having a large calorific value is disposed upward. And

  According to the electronic equipment storage box according to claim 8, in addition to the action by the electronic equipment storage box according to any one of claims 1 to 6, when outside air is taken in from the air inlet, Air absorbs heat from electronic devices with a small calorific value disposed below, and rises while cooling them. And after cooling the electronic device with large calorific value arrange | positioned above, it is discharged | emitted outside through the exhaust fan of a ceiling board. Therefore, heat can be efficiently absorbed in the storage box body, and a temperature rise in the storage box body can be suppressed.

  According to such an electronic equipment storage box, while taking in outside air efficiently, the rise in temperature in the storage box body can be suppressed more than before, and the electronic equipment to be stored can be effectively Can be cooled. Therefore, normal operation of the electronic devices can be maintained.

  Next, embodiments of the present invention will be described in detail with reference to the drawings as appropriate. FIG. 1 is an exploded perspective view of an electronic device storage box according to the present embodiment, and FIG. 2 is a perspective view of a part of the electronic device storage box according to the present embodiment. FIG. 3 is a side sectional view of the electronic device storage box according to the present embodiment, and FIG. 4 is a bottom view of the electronic device storage box according to the present embodiment.

  As shown in FIGS. 1 and 2, the electronic device storage box 1 of the present embodiment includes a storage box body 2 that stores electronic devices E <b> 1 and E <b> 2, and an intake port for taking outside air into the storage box body 2. 3 (see FIG. 4), an exhaust fan 4 for exhausting air from the inside of the storage box body 2 to the outside, and an exhaust hood 5 for preventing raindrops and the like from entering the exhaust fan 4 Inside the box body 2, an electronic equipment storage shelf 6 for placing electronic equipment is installed.

As shown in FIG. 1, the storage box main body 2 includes a bottom plate 21, a ceiling plate 22, and a frame body 23 that is integrally joined between the bottom plate 21 and the ceiling plate 22 so as to surround the periphery thereof. Two side plates 24, 24 arranged to face each other between the bottom plate 21 and the ceiling plate 22, and a front door 25 and a back plate 26 arranged to face each other between the side plates 24, 24 are frame bodies 23. And is formed into a box shape (see FIG. 3 and the like). The front door 25 is attached to the frame body 23 by a hinge H and can be freely opened and closed. Further, the piece P is welded to the frame body 23 in advance, and the side plates 24, 24 and the back plate 26 are attached to the piece P with attachment pins or the like (not shown). In this way, the side plates 24 and 24 and the back plate 26 can be easily attached and removed at the site, so that maintenance and replacement of the electronic devices E1 and E2 can be simplified. Can do. Further, there is no need to make a through hole for attachment to the side plate 24 or the back plate 26, and the waterproofness and airtightness can be improved. In order to further secure the waterproof property, a watertight packing or the like may be interposed when the side plates 24, 24 and the back plate 26 are attached to the frame body 23.
The side plates 24, 24, the front door 25, and the rear plate 26 correspond to “side plates” in the claims.

  As shown in FIG. 4, the bottom plate 21 is provided with an air inlet 3. In order to install the dustproof filter F at the intake port 3, a dustproof filter installation frame 21 a is provided (see FIG. 3), and replacement and maintenance of the dustproof filter F can be facilitated. Note that the air inlet 3 may be provided not near the bottom plate 21 but near the lower portion of the side plate 24 or may be provided near the lower portions of the bottom plate 21 and the side plate 24. In particular, when it is provided on both the bottom plate 21 and the side plate 24, the air that is sucked up from the side of the bottom plate 21 and the air that rises when sucked up from the side plate 24 can be mixed to efficiently generate the rising airflow. , Can make air flow easier.

  As shown in FIG. 1, two exhaust fans 4 are arranged in parallel on the ceiling plate 22 so as to penetrate in the vertical direction, and the outside air is taken into the storage box body 2 and the air inside thereof is taken up. It can be discharged. When the exhaust fan 4 is provided in this manner, the internal air stays in the vicinity of the ceiling plate 22 to generate a heat pool as in the case where the exhaust plate 4 is provided in the side plate 24 so as to open horizontally. It can be exhausted outside.

FIG. 5 is a perspective view of an electronic device storage shelf.
As shown in FIG. 5, the electronic device storage shelf 6 has two plate-like members (rectifying plates) 61 and 62 arranged opposite to each other, and a lower position and an intermediate position between the plate-like members 61 and 62. Two mounts 63 and 64 are provided, and electronic devices E1 and E2 (see FIG. 3 and the like) can be placed on the mounts 63 and 64. In addition, an optical termination box 65 is attached to one plate-like member 61 so that a power distribution cable or a communication cable connected to the electronic devices E1 and E2 can be stored.

  As the material of the plate-like members 61 and 62, for example, a heat insulating material such as wood fiber or inorganic fiber is suitable. If the heat insulating material is used, the radiant heat from the side plates 24, 24, etc. is not transmitted to the electronic devices E1, E2 placed between the plate-like members 61, 62, and the electronic devices E1, E2 are efficiently cooled. be able to. Between the plate-like members 61 and 62, pedestals 63 and 64 are attached with screws or the like (not shown). In addition, a plurality of locking holes are formed along the vertical direction at both ends in the horizontal direction of the surfaces where the plate-like members 61 and 62 face each other. You may comprise so that the base 63 and 64 may be attached by inserting a latching protrusion in a latching hole. By mounting a plurality of locking holes in the vertical direction, the mounting height of the mounts 63 and 64 can be selected in accordance with the sizes of the electronic devices E1 and E2.

  The mounts 63 and 64 have a rectangular shape, and are provided with mesh-like vent holes 63a and 64a so that air can flow therethrough. The mounts 63 and 64 are horizontally mounted between the plate-like members 61 and 62, and the electronic devices E1 and E2 are placed thereon (see FIG. 3). For this reason, it is preferable to use a material that has the strength to withstand the weight of the electronic devices E1 and E2 and does not transmit heat. The electronic device E2 having a large horizontal projection area is placed on the gantry 64 attached to the upper side, and the electronic device E1 having a small horizontal projection area is placed on the gantry 63 attached to the lower side.

With this arrangement, outside air is taken in from the air inlet 3 of the bottom plate 21, and while the taken-in air rises, first, the heat generated from the electronic device E1 having a small horizontal projection area is absorbed, and then the horizontal projection area. The heat generated from the large electronic device E1 is absorbed. Since the electronic device E1 having a small horizontal projection area is disposed below the container box body 2, a wide air flow path in the vicinity of the air inlet 3 can be secured, and a large amount of outside air can be taken in. Therefore, it is possible to improve the efficiency of absorbing heat generated by the electronic devices E1 and E2.
In the present embodiment, the vertical arrangement of the electronic device is determined by the size of the horizontal projection area, but when the horizontal projection area is the same, the amount of heat generation is the upper and lower of the electronic device. The placement can also be determined. In this case, if an electronic device with a large calorific value is arranged above, the air taken in from the air inlet 3 absorbs heat from an electronic device with a small calorific value and then absorbs heat from an electronic device with a large calorific value. Therefore, the heat recovery efficiency can be improved.

As shown in FIG. 3, the exhaust hood 5 is attached to the storage box body 2 so as to cover the ceiling plate 22 from above, and raindrops and the like are prevented from entering the storage box body 2 via the exhaust fan 4. (See FIG. 2). The exhaust hood 5 covers the entire upper surface 22a of the ceiling plate 22 and is formed in a substantially rectangular shape in a plan view formed by projecting sideward from the back side of the ceiling plate, and peripheral edges on all four sides thereof. And peripheral edges 51, 52, 53, 54 extending downward from the head (see FIG. 2). The exhaust hood 5 is fixed to the storage box body 2 with bolts and nuts with the peripheral portions 51, 52, and 53 positioned on the front side and the side surface contacting the upper surface 22 a of the ceiling plate 22 of the storage box body 2. . By configuring the bolts and nuts to be detachable, maintenance of the exhaust fan 4 and the like can be easily performed.
The exhaust hood 5 may be attached with a fitting structure on the exhaust hood 5 and the ceiling plate 22 so that the exhaust hood 5 can be easily detached.

  Further, the peripheral edge 54 located on the back side has a predetermined gap between the back plate 26 and opens downward between the peripheral edge 54 and the back plate 26 of the storage box body 2. An exhaust port 55 is formed (see FIG. 3). Although the exhaust port 55 can be provided so as to open in the horizontal direction, waterproofing can be improved by providing the exhaust port 55 so as to open downward. Further, when provided so as to open downward, the air in the space S formed by the hood main body 50, the peripheral portions 51, 52, 53, 54 and the upper surface 22 a of the ceiling plate 22 is exhausted along the back plate 26. Therefore, the temperature rise of the outer surface of the back plate 26 can be suppressed (see FIG. 6).

The air flow in the electronic equipment storage box 1 configured as described above will be described below.
FIG. 6 is a side sectional view schematically showing the flow of air in the electronic equipment housing box.
First, when the exhaust fan 4 is operated, outside air is taken into the housing box body 2 through the dust filter F from the air inlet 3 provided in the bottom plate 21. The air taken in is separated by the plate-like members 61 and 62 while the flow is divided between the front door 25 (rear plate 26) side and the electronic equipment E1 and E2 side with the plate-like member 61 (62) interposed therebetween. It rises while being guided in the flowing direction. At this time, the air rising through the ventilation holes 63a between the plate-like members 61 and 62 absorbs heat generated by the electronic device E1 having a small horizontal projection area, and cools the electronic device E1. At this time, in the lower part near the intake port 3, a wide air flow path can be secured, so that a large amount of air can be taken in. The air that has further risen and passed through the vent hole 64a absorbs heat generated from the electronic device E2 having a large horizontal projection area, and cools the electronic device E2. Further, since the plate-like members 61 and 62 guide the air flow, the air can be intensively flowed around the electronic devices E1 and E2 to effectively cool the electronic devices E1 and E2.

  On the other hand, radiant heat from the front door 25 (rear plate 26) is transmitted to the air flowing toward the front door 25 (rear plate 26), but this radiant heat is blocked by the plate-like members 61 and 62 made of a heat insulating material. Thus, the electronic devices E1 and E2 can be protected from excess heat without being transmitted to the air between the plate-like members 61 and 62.

  The air that has reached the ceiling board 22 in this way is discharged from the exhaust fan 4 into the space S. At this time, since the exhaust fan 4 is attached to the ceiling plate 22 so as to penetrate vertically, air does not stay in the vicinity of the ceiling plate 22 in the storage box body 2, and no heat pool is generated.

  In the space S, air flows along the lower surface of the hood main body 50 and the upper surface of the ceiling plate 22, flows toward the peripheral edge 54, and is exhausted to the outside from the exhaust port 55. Since the exhaust port 55 opens downward, the air is blown along the outer surface of the back plate 26, and the temperature rise of the outer surface of the back plate 26 can be suppressed.

According to the above, the following effects can be obtained in the electronic device housing box 1 according to the present embodiment.
Since the exhaust fan 4 is provided so as to penetrate the ceiling plate 22 vertically, the air taken into the storage box main body 2 reaches the ceiling plate 22 while riding the rising airflow, and the exhaust fan 4 and the exhaust port It is exhausted to the outside through 55. Therefore, unlike the case where the exhaust fan 4 and the exhaust port 55 are horizontally opened on the side surface 24 side, no heat pool is generated near the ceiling plate 22 in the storage box body 2, and the storage box body due to the heat pool is generated. The temperature rise in 2 can be suppressed.
In addition, since the outside air can be efficiently taken in and exhausted by the exhaust fan 4, the electronic devices E1 and E2 can be efficiently cooled, and normal operation of the electronic devices E1 and E2 can be maintained.

Since the plate-like members 61 and 62 guide the air flow and allow the air to flow efficiently in the vicinity of the electronic devices E1 and E2, the electronic devices E1 and E2 can be effectively cooled, and the normal operation of the electronic devices E1 and E2 is normal. The operation can be kept.
Moreover, since the plate-shaped members 61 and 62 are formed of a heat insulating material, it is possible to prevent the radiant heat from the front door 25 or the like of the storage box body 2 from being transmitted to the electronic devices E1 and E2. Therefore, the temperature rise of the electronic devices E1 and E2 can be suppressed.

  The air exhausted downward by opening the exhaust port 55 downward is blown along the outer surface of the back plate 26 of the storage box body 2, and the external surface temperature of the storage box body 2 is lowered. Therefore, even when installed in a harsh outdoor environment such as a high temperature, an increase in temperature in the storage box body 2 can be suppressed. In addition, since the exhaust port 55 is provided so as to open downward, it is possible to further prevent intrusion of raindrops, dust, and the like.

  Since the exhaust hood 5 can be easily attached and detached, the exhaust hood 5 can be removed and maintenance of the exhaust fan 4 and the like can be easily performed.

  The exhaust hood 5 covers the entire upper surface 22a of the ceiling board 22, and the exhaust fan 4 is not exposed to the outside, so that intrusion of raindrops, dust, and the like can be prevented. Moreover, since the exhaust hood covers the entire upper surface 22a of the ceiling plate 22, the ceiling plate 22 can be shielded from direct sunlight.

  When outside air is taken in from the air inlet 3, the air first rises while taking heat from the electronic device E <b> 1 having a small horizontal projection area disposed below and cooling them. And after cooling the electronic device E2 with a large horizontal projection area arrange | positioned upwards, it is discharged | emitted outside via the exhaust fan 4 of the ceiling board 22. FIG. Since the electronic device E1 having a small horizontal projection area is disposed in the lower part of the storage box body 2, a wide air flow path can be secured in the vicinity of the air inlet 3. Therefore, since a large amount of outside air can be taken in and the air flow rate can be increased, efficient heat recovery can be performed.

As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment.
In the present embodiment, the air flow is rectified by the plate-like members 61 and 62 of the electronic device storage shelf 6. However, the air flow is concentrated in the vicinity of the electronic devices E1 and E2. If so, it may be provided separately from the electronic device storage shelf 6. Moreover, in this embodiment, although it comprised so that it rectified | straightens only by the plate-shaped members 61 and 62 arrange | positioned facing, you may arrange | position a plate-shaped member so that it may surround four sides. In this way, radiant heat from the side plate 24 and the like can also be blocked.
Furthermore, in the present embodiment, the electronic device storage shelf 6 is constituted by two stages of the gantry 63, 64, but the gantry may be provided by three or more stages.

  Further, the hood main body 50 of the exhaust hood 5 is configured to protrude only from the back plate 26 side in a plan view and to blow air only on the outer surface of the back plate 26, but also on the side plates 24 and 24 side and the front door 25 side. You may comprise so that it may blow away. The air is dispersed more than the case where only one surface of the back plate 25 is blown, and although the effect of blowing is inferior, the outer surface temperature of the storage box body 2 can be lowered uniformly.

Hereinafter, it will be described how the temperature distribution in the main body of the storage box changes by simulating the structure and the like of the electronic equipment storage box with reference to the drawings. In this simulation, the outside air temperature is set to 35 degrees in any case. In addition, the upper air temperature of the electronic device disposed above is (1), and the upper air temperature of the electronic device disposed below is represented as (2). In the drawing, the higher the temperature, the darker the color. indicate.
FIG. 7 is a view showing a temperature distribution in the storage box body of the electronic equipment storage box according to the present embodiment. 8 is a diagram showing a temperature distribution in the housing body when the exhaust fan is attached to the side in the electronic equipment housing box of FIG. 7, and FIG. 9 is a rectification in the electronic equipment housing box of FIG. FIG. 10 is a diagram showing the temperature distribution in the storage box body when the plate is not provided, and FIG. 10 is a diagram showing the temperature distribution in the storage box body when the electronic device is switched up and down.

  First, FIG. 7 shows an electronic device storage box according to the present embodiment, in which an exhaust fan is attached to a ceiling plate, an exhaust port is opened downward, and an electronic device having a large horizontal projection area is formed in the storage box body. In the upper part, an electronic device having a small horizontal projection area is arranged below, and a case where a rectifying plate that allows air to flow intensively around the electronic device is shown. In this case, the temperature inside the container box body is 39.0 ° C. for (1) and 37.8 ° C. for (2), and the color is light as a whole in the drawing. That is, it can be seen that the inside of the container box body has a generally low temperature and a uniform temperature distribution.

  FIG. 8 shows a case where the exhaust fan is attached to the side, and the temperature inside the storage box body is 43.3 ° C. in (1) and 37.1 ° C. in (2). That is, as can be seen from the fact that the color of the upper part inside the container box is particularly dark, it can be seen that a heat pool is generated near the ceiling plate and the ambient temperature is extremely high.

  FIG. 9 shows a case where a current plate is not provided. The temperature inside the container box body is 47.4 ° C. for (1) and 48.2 ° C. for (2). Is darker. In other words, since the air cannot be intensively flowed around the electronic device by the rectifying plate, efficient heat recovery cannot be performed, and the temperature inside the storage box body becomes extremely high as a whole. I understand that.

  FIG. 10 shows a case where an electronic device having a small horizontal projection area is arranged on the upper side and an electronic device having a large horizontal projection area is arranged on the lower side. The temperature inside the container box body is (1) 44.0 ° C. (2) is 44.3 ° C. Also, in the drawing, the electronic device disposed above and its periphery are darkened as a whole. In other words, if an electronic device with a large horizontal projection area is disposed below, the efficiency of taking in outside air will deteriorate, the temperature of the electronic device disposed above will become high, and the temperature inside the storage box main body will also increase overall. I understand.

  Next, how the temperature distribution in the housing box changes by simulating the arrangement of an electronic device with a large horizontal projection area and a small calorific value and an electronic device with a small horizontal projection area and a large calorific value. explain. FIG. 11 is a diagram showing the temperature distribution in the housing body when an electronic device having a large horizontal projection area and a small amount of heat generation is arranged upward, and FIG. 12 shows an electronic device having a small horizontal projection area and a large amount of heat generation upward. It is a figure which shows the temperature distribution in the container main body at the time of arrange | positioning.

  FIG. 11 shows a case where an electronic device having a large horizontal projection area and a small amount of heat generation is disposed above, and an electronic device having a small horizontal projection area and a large amount of heat generation is disposed below. In this case, the temperature in the container box body is 38.9 ° C. for (1) and 38.1 ° C. for (2), and it can be seen that the overall color is light in the drawing. That is, since air efficiently flows through the inside of the housing box body, it can be seen that the inside of the housing box body has a uniform temperature distribution at a low temperature as a whole.

  FIG. 12 shows a case where an electronic device with a small horizontal projection area and large heat generation is arranged above, and an electronic device with a large horizontal projection area and small heat generation is arranged below. In this case, the temperature inside the storage box body is 51.7 ° C. for (1) and 40.8 ° C. for (2). In the drawing, the color around the electronic device disposed above is dark. You can see that In other words, since air cannot efficiently flow through the container body, the flow rate of air is low, heat generated around the electronic device disposed above cannot be efficiently recovered, and the ambient temperature becomes extremely high. I understand that.

  From the above simulation results, the following was found. First, comparing FIG. 7 and FIG. 8, it was found that the temperature increase in the storage box body can be suppressed when the exhaust fan is attached to the ceiling plate than when the exhaust fan is attached to the side. Moreover, comparing FIG. 7 and FIG. 9, it was found that the temperature increase in the container main body can be suppressed more when the rectifying plate is not provided than when the rectifying plate is not provided. Furthermore, comparing FIG. 7 and FIG. 10, it was found that the temperature increase in the container body can be suppressed when the electronic device having a large horizontal projection area is arranged upward. 11 and 12, when an electronic device having a small horizontal projection area and a large amount of heat generation and an electronic device having a large horizontal projection area and a small amount of heat generation are housed in the housing box body, the former is directed downward and the latter is directed upward. It turned out that the direction which arrange | positioned can suppress the temperature rise in a container main body.

It is a disassembled perspective view of the electronic device storage box which concerns on embodiment. It is the perspective view which saw through a part of electronic device storage box concerning an embodiment. It is side surface sectional drawing of the electronic device storage box which concerns on embodiment. It is a bottom view of the electronic device storage box which concerns on embodiment. It is a perspective view of an electronic device accommodation shelf. It is side surface sectional drawing which illustrates roughly the flow of the air inside an electronic device storage box. It is a figure which shows the temperature distribution in the container main body of the electronic device storage box which concerns on this embodiment. It is a figure which shows the temperature distribution in the container main body in case the exhaust fan is attached to the side in the electronic device storage box of FIG. It is a figure which shows the temperature distribution in the container main body in case the rectifying plate is not provided in the electronic device container of FIG. It is a figure which shows the temperature distribution in the container main body at the time of changing arrangement | positioning of an electronic device in the electronic device container of FIG. It is a figure which shows the temperature distribution in the container main body at the time of arrange | positioning upward the electronic device with a large horizontal projection area and little heat_generation | fever. It is a figure which shows the temperature distribution in the container main body at the time of arrange | positioning upward the electronic device with a small horizontal projection area and a big heat_generation | fever.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electronic equipment storage box 2 Storage box main body 3 Intake port 4 Exhaust fan 5 Exhaust hood 6 Electronic equipment storage shelf 21 Bottom plate 22 Ceiling plate 24 Side plate 25 Front door 26 Back plate 55 Exhaust port E1, E2 Electronic device

Claims (8)

A storage box body for storing electronic devices inside;
An inlet provided in the vicinity of the bottom of the side plate of the storage box body or in the bottom plate;
An exhaust fan provided vertically through the ceiling plate of the storage box body;
An electronic equipment storage box characterized by comprising:   2. The electronic device housing according to claim 1, further comprising an exhaust hood that covers the entire top surface of the ceiling plate of the housing box body from above, and the exhaust hood has an exhaust port that is horizontally oriented or downward from the horizontal. box.   The electronic apparatus according to claim 2, wherein the exhaust hood protrudes laterally from the ceiling plate, and the exhaust port is formed downward so as to be discharged along the side plate. Kind storage box.   The electronic equipment storage box according to claim 2, wherein the exhaust hood is detachable.   5. The electronic device storage box according to claim 1, further comprising a rectifying plate that intensively flows air sucked from the air intake port around the electronic devices. 6. .   The electronic device housing box according to claim 5, wherein the current plate is made of a heat insulating material disposed between the electronic devices and the side plate.   The electronic device according to any one of claims 1 to 6, wherein the plurality of electronic devices are arranged side by side in such a way that the one with a larger horizontal projection area is located above. Kind storage box. The electronic device storage box according to any one of claims 1 to 6, wherein among the electronic devices, a device having a large calorific value is disposed above.