JP2008288302A - Electronic equipment device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic equipment device effectively drawing a heat from a heat generating component in a casing inside while being capable of preventing the leakage of a foreign matter into the casing inside even when a thinning is sacrificed and a usable fan is selected specially. <P>SOLUTION: A dead space S between the outer peripheral surface of the fan 5 and the internal surface of a casing is interrupted from an air flow F formed in the inside of the casing 1, and the generation of the air flow F can be prevented in the dead space S. Even when the foreign matter such as a screw intrudes from an opening between the fan 5 and the casing 1, the foreign matter does not reach in a housing space for an electronic component 9 as the substantial internal space 24 of the casing 1 by an air-direction plate 21 closing the sectional opening of the casing 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electronic device apparatus having a forced air cooling structure surrounded by a casing.

  As this type of forced air-cooled electronic device, for example, Patent Document 1 discloses a structure in which a blower fan is attached to one side surface of a box-shaped housing. In such an apparatus, a forced air flow is formed in the housing by rotating the fan, thereby suppressing the temperature rise of various electronic components incorporated in the housing.

  FIG. 12 shows the internal structure of such an electronic apparatus device. In the figure, reference numeral 1 denotes a rectangular box-shaped housing, which is a metal plate material such as aluminum formed in a desired shape. The housing 1 includes a cylindrical casing 3 having an opening 2 on one side and an intake hole (not shown) on the other side, and a plate-like cover 4 that closes the opening 2 of the casing 3. The

  Reference numeral 5 denotes a cooling axial fan attached to the cover 4, and this fan 5 is attached to the inside of the cover 4 and thus the housing 1 with, for example, screws so as not to protrude outwardly from the housing 1. Fixed. Here, when the fan 5 is driven to rotate, air is forcibly sucked from the suction port 6 directed into the housing 1, and the air passes through the exhaust hole 8 formed in the cover 4 from the discharge port 7. The fan 5 is disposed so as to be discharged to the outside of the housing 1. Further, as is well known, one or a plurality of electronic components 9 are mounted on the substrate 10 inside the housing 1, and the heat generating electronic components 9 include a radiator (not shown) having a plurality of fins as necessary. ) Is thermally connected.

As the fan 5 is driven to rotate, an air flow F toward the suction port 6 of the fan 5 is forcibly formed inside the housing 1. In this state, the heat generated from the electronic component 9 when the electronic device is energized is the air flow F that is forcibly formed in the radiator or the electronic component 9 that generates heat that is thermally connected to the electronic component 9. It is taken away by hitting. Thus, the air passing through the radiator and the electronic component 9 deprives the heat, and the heated air is discharged from the fan 5 to the outside of the housing 1, thereby suppressing the temperature rise of the heat generating electronic component 9. it can.
JP 2003-8269 A

  However, the conventional electronic device as described above has the following problems.

  As shown in FIG. 12, the fan 5 is provided inside the housing 1 so as not to protrude to the outside of the housing 1, but in this case, the fan 5 has an outer peripheral surface and an inner surface of the housing 1. In the meantime, a dead space S that does not require much cooling is formed. However, when the fan 5 is driven to rotate, a wasteful air flow F is generated also in the dead space S and other spaces that do not require much cooling (for example, the space between the substrate 10 and the housing 1). There was a problem that heat could not be effectively removed from the space that originally required cooling.

  As another problem, in order to reduce the thickness of this type of electronic apparatus device, for example, as shown in FIG. And formed on the lower surface on one side. By doing so, it is possible to make the electronic device apparatus thinner with substantially the thickness of the outer surface dimension of the fan 5. However, if there is a gap between the edge of the notch 11 and the outer peripheral surface of the fan 5, a foreign matter such as a screw enters the inside of the housing 1 from there, and some countermeasure is required.

  As one of such measures to prevent foreign matter intrusion, for example, a fan 5 provided on the outer peripheral surface of a rib that closes a gap between the cutout portion 11 may be incorporated. Depending on the situation, there arises a problem that the desired fan 5 cannot be obtained. In addition, it is conceivable to surround the outer peripheral surface of the fan 5 with the casing 3, but this makes it impossible to reduce the thickness, which is the original purpose.

  Moreover, not only foreign matter but also air is sucked from the gap when the fan 5 is operated. In other words, an external flow from the gap is caught in the fan 5 via the dead space S, and there is a problem that the air volume in the space that originally needs cooling is reduced.

  Furthermore, when the housing 1 has a horizontally long shape, the midpoint of the outer surface portion in the longitudinal direction formed in the plate shape of the casing 3 is easily bent. Moreover, since the outer surface part of the longitudinal direction of the housing | casing 1 deform | transforms easily with respect to the pressure from the outside, the structure which prevents the bending and deformation | transformation of the outer surface part of the housing | casing 1 was desired.

  Accordingly, an object of the present invention is to effectively remove heat from heat-generating components inside the housing, and to prevent entry of foreign matter into the housing without sacrificing thickness reduction or selecting a usable fan. To provide an electronic device.

  According to a first aspect of the present invention, there is provided an electronic device device including a housing containing a heat-generating component and a fan for blowing air attached to the inside of the housing, and the fan outlet is disposed toward one side of the housing. In the electronic device apparatus, an airflow direction plate that has an opening facing the air inlet of the fan and is closely attached to the fan is disposed inside the casing so as to close the cross-sectional opening of the housing. is there.

  According to a second aspect of the present invention, there is provided an electronic device device in which a guide portion that engages with a peripheral edge of the wind direction plate is provided in the casing.

  Furthermore, the electronic device apparatus according to claim 3 of the present invention is provided with a fixing portion that allows the wind direction plate to be attached and fixed to the housing without using a stopper.

  According to the first aspect of the present invention, a wind direction plate is attached in close contact with the suction port side of the fan, and the outer surface of the fan and the inner surface of the housing are simply disposed by closing the wind direction plate so as to block the cross-sectional opening of the case. The dead space between the two is blocked from the air flow formed inside the housing, and in this dead space, it is possible to prevent the air flow including the external flow entering from the gap between the fan and the housing. it can. Further, by appropriately adjusting the shape of the opening formed in the wind direction plate, it is possible to similarly prevent the air flow from occurring in other spaces that do not require much cooling inside the housing. Therefore, the heat from the heat generating component can be effectively taken away inside the housing.

  In addition, even if foreign matter such as screws enters through the gap between the fan and the housing, the foreign material enters the housing space of the heat generating component, which is the substantial internal space of the housing, by the wind direction plate that closes the cross-sectional opening of the housing. Not reach. Therefore, it is possible to prevent the entry of foreign matter into the housing without having to select a fan that can be used and without surrounding the fan with a housing at the expense of thinning.

  According to the second aspect of the present invention, even if the outer surface portion of the housing is to be bent or an external force is applied, the peripheral edge of the wind direction plate abuts on the guide portion provided on the outer surface portion of the housing. The above bending and deformation can be prevented.

  In the third aspect of the present invention, for example, the wind direction plate can be attached and fixed to the housing by the fixing portion without using a fastener such as a screw, and the number of parts and the number of work steps can be reduced.

  Hereinafter, preferred embodiments of an electronic device apparatus according to the present invention will be described with reference to the accompanying drawings. In addition, the same code | symbol is attached | subjected to the same part as a prior art example, and description of the common location is abbreviate | omitted as much as possible in order to avoid duplication.

  1 to 3 showing a preferred embodiment, it is noted that a wind direction plate 21 is provided in close contact with the surface of the fan 5 on the side where the suction port 6 is formed. The wind direction plate 21 is opposed to the suction port 6 of the fan 5, and an opening 22 having a shape generally matched to the suction port 6 is formed. The opening 22 here defines the range of the air flow F sucked into the intake port 6, but at least the fan 5 is used to block the entry of foreign matter and the air flow from the dead space S. The opening 22 is preferably completely closed by the fan 5 when attached to the wind direction plate 21. Further, when the casing 1 is cut perpendicularly to the axial direction of the fan 5 along the air flow F, the wind direction plate 21 is provided inside the casing 1 so as to close the cut opening 23 of the casing 1 without a gap. Is disposed. Thereby, the dead space S formed between the outer peripheral surface of the fan 5 and the inner surface of the housing 1 and the internal space 24 of the housing 1 in which the electronic component 9 and the substrate 10 are accommodated are completely formed by the wind direction plate 21. Isolated. In addition, the structure of each part other than that is common in FIG. 12 and FIG. 13 in a prior art example.

  As the fan 5 is driven to rotate, an air flow F toward the suction port 6 of the fan 5 is forcibly formed inside the housing 1. However, in this embodiment, cooling is not so necessary. Since the dead space S is completely isolated from the internal space 24 of the housing 1, the unnecessary air flow F from the dead space S can be completely blocked, and the air flow F is formed only by the internal space 24. can do. Also, in this internal space 24, there is a part of the space that does not require much cooling, such as the space between the substrate 10 and the housing 1, but the shape of the opening 23 of the wind direction plate 21 is adjusted appropriately. Then, by forming the opening 23 inside the position where the substrate 10 is provided, unnecessary air flow F from the space can be blocked. Therefore, in this case, in the internal space 24 of the housing 1, it is possible to intensively form the air flow F only in the space between the substrates 10 and 10 that particularly needs cooling.

  Further, in this embodiment, in order to achieve a reduction in the thickness of the electronic device, notches 11 that expose the outer peripheral upper surface and the outer peripheral lower surface of the fan 5 are formed on the one upper surface and one lower surface of the casing 3, respectively. Yes. Here, even when a foreign object such as a screw enters from the gap between the edge of the notch 11 and the outer peripheral surface of the fan 5, the wind direction plate 21 that closes the cross-sectional opening of the housing 1 serves as a guard. Thus, the foreign matter stops inside the dead space S and does not enter the internal space 24 of the housing 1 that houses the electronic component 9 and the substrate 10. Therefore, even if the conventional fan 5 with ribs is not selected, foreign matter that has entered from the gap between the edge of the notch 11 and the outer peripheral surface of the fan 5 enters the internal space 24 of the housing 1. Intrusion can be blocked by the wind direction plate 21 described above.

  Further, since the wind direction plate 21 of the present embodiment blocks the flow of air between the internal space 24 of the housing 1 and the outside of the housing 1, the edge of the notch 11 is operated during the operation of the fan 5. Inflow of air from the gap between the fan and the outer peripheral surface of the fan 5 does not occur. Therefore, the air flow F in the internal space 24 can be formed in a concentrated manner, and the electronic component 9 mounted on the substrate 10 can be effectively cooled.

  As described above, in this embodiment, the housing 1 including the electronic component 9 that is a heat-generating component and the fan 5 for blowing attached to the inside of the housing 1 are provided, and the discharge port 7 of the fan 5 is connected to the housing 1. In the electronic device device arranged toward one side, the airflow direction plate 21 having an opening 23 facing the suction port 6 of the fan 5 and closely attached to the fan 5 is closed so as to block the cross-sectional opening of the housing 1. Is disposed inside the housing 1.

  In this way, the wind direction plate 21 is attached in close contact with the suction port 6 side of the fan 5, and the wind direction plate 21 is disposed so as to close the cross-sectional opening of the housing 1. The dead space S between the inner surface and the inner surface is blocked from the air flow F formed inside the housing 1, and the air flow F can be prevented from being generated in the dead space S. Further, by appropriately adjusting the shape of the opening 23 formed in the wind direction plate 21, the air flow F is similarly generated in other spaces that do not require much cooling in the internal space 24 of the housing 1. Can be prevented. Therefore, the heat from the electronic component 9 that generates heat inside the housing 1 can be effectively removed.

  Further, even if foreign matter such as a screw enters from the gap between the fan 5 and the housing 1, the foreign matter is an electron that is substantially the internal space 24 of the housing 1 by the wind direction plate 21 that closes the cross-sectional opening of the housing 1. It does not reach the housing space for the component 9. Therefore, it is possible to prevent the entry of foreign matter into the housing 1 without selecting the fan 5 that can be used and without surrounding the fan 5 with the housing 1 at the expense of thinning.

  Next, another modification of the present invention will be described with reference to FIGS. Here, a plurality of ribs 26 are formed on the outer peripheral edge of the wind direction plate 21, and slits 27 as guide portions are formed in the outer surface portion of the housing 1 corresponding to the ribs 26. When the wind direction plate 21 to which the fan 5 is previously attached is inserted from the opening 2 side of the casing 3, the wind direction plate 21 is attached to the inside of the housing 1 at a position where the rib 26 is fitted into the slit 27. In this example, the slit 27 that engages with the rib 26 formed on the peripheral edge of the wind direction plate 21 is provided in the outer surface portion of the housing 1, so that the outer surface portion of the housing 1 tries to bend, or the outer surface of the housing 1. Even if an external force is applied to the portion, the rib 26 of the wind direction plate 21 abuts against the slit 27 provided on the outer surface portion of the housing 1, and further bending and deformation can be prevented.

  Further, the ribs 26 and the slits 27 in the present modification are provided as fixing portions that enable the wind direction plate 21 to be attached and fixed to the housing 1 without using a stopper such as a screw. In this way, the wind direction plate 21 can be attached and fixed to the housing 1 by the engagement structure of the rib 26 and the slit 27 without using a stopper such as a screw, and the number of parts and the number of work steps can be reduced. Can do.

  In this modification, the slit 27 as a guide portion is formed in the housing 1 in order to reduce the number of parts. However, a guide member separate from the housing 1 is provided, and a wind direction plate is provided here. The peripheral edge of 21 may be engaged.

  Further, examples of the electronic device apparatus related to FIGS. 1 to 3 are shown in FIGS. The wind direction plate 21 here forms step portions 31 to 33 instead of the ribs 26 at appropriate positions on the periphery thereof. On the other hand, the housing 1 is formed in a box shape by combining the first to third frames 41 to 43 having a plurality of sheet metal shapes. The first frame 41 is formed with insertion slits 51 and 52 corresponding to the step portions 31 and 32, respectively, and the second frame 42 is also inserted corresponding to the step portion 33. A slit 53 is formed.

  In assembling, first, the wind direction plate 21 shown in FIG. 6 is attached to the first frame 41 shown in FIG. This is achieved by inserting the step portions 31 and 32 of the wind direction plate 21 into the slits 51 and 52 of the first frame 41 as shown in FIG. Next, the second frame 42 is attached so as to face the first frame 41 so that the stepped portion 33 of the wind direction plate 21 is inserted into the slit 53. As a result, as shown in FIG. 9, the wind direction plate 21 is fixed between the first frame 41 and the second frame 42 while being pressed from both side surfaces in the direction of arrow A. Further, the second frame 42 that forms the upper surface of the housing 1 covers the upper surface portion that forms other than the step portion 31 of the wind direction plate 21 and the slit 51 of the first frame 41.

  Thereafter, the third frame 43 forming the bottom surface of the housing 1 forms a lower surface other than the slit 52 of the first frame 41, the slit 53 of the second frame 42, and the step portions 32 and 33 of the wind direction plate 21. Mounted to cover the part. By doing so, the completed casing 1 has a structure in which the wind direction plate 21 cannot be seen from the outside, as shown in FIGS.

  And here, since the slits 51 to 53 that engage with the step portions 31 to 33 formed on the peripheral edge of the wind direction plate 21 are provided in the outer surface portion of the housing 1, the outer surface portion of the housing 1 tries to bend, Even if an external force is applied to the outer surface portion of the housing 1, the step portions 31 to 33 of the wind direction plate 21 come into contact with the slits 51 to 53 provided on the outer surface portion of the housing 1, so that further bending or deformation is caused. Can be prevented. Further, the step portions 31 to 33 and the slits 51 to 53 are provided as fixing portions that enable the wind direction plate 21 to be attached and fixed to the housing 1 without using a stopper such as a screw. In this way, it is possible to attach and fix the wind direction plate 21 to the housing 1 by the engagement structure of the step portions 31 to 33 and the slits 51 to 53 without using a stopper such as a screw. Can be reduced.

  In addition, here, the casing composed of the plurality of first to third frames 41 to 43 covers the periphery of the wind direction plate 21 so that the wind direction plate 21 is not visible from the outside. The appearance quality of the product can be improved.

  The present invention is not limited to the above embodiments, and can be modified without departing from the spirit of the present invention. For example, the fan 5 is not limited to the axial flow type that forms the air flow F along the rotation axis, but may be a centrifugal type in which the discharge port is positioned in the orthogonal direction with respect to the suction port.

It is sectional drawing of the principal part which shows the electronic device apparatus of preferable one Example of this invention. It is a perspective view of the state which removed the fan and the cover from the casing same as the above. It is a perspective view of the state which attached the fan and the cover to the casing same as the above. It is a perspective view of the principal part which shows another modification. It is a front view of a wind direction board same as the above. It is a front view of the wind direction board relevant to FIGS. It is a principal part perspective view of the 1st frame same as the above. It is a perspective view of the state which integrated the wind direction board into the 1st frame same as the above. It is a perspective view of the state which pressed down a wind direction board with the 1st-3rd frame as above. It is a perspective view of the principal part which shows the completion state of a housing | casing same as the above. It is a perspective view of the principal part which shows the completion state of a housing | casing same as the above. It is sectional drawing of the principal part which shows the electronic device apparatus of a prior art example. It is a perspective view of the principal part same as the above.

Explanation of symbols

1 Enclosure 5 Fan 6 Suction port 7 Discharge port 9 Electronic component (heat generating component)
21 wind direction plate 23 opening 26 rib (fixed part)
27 Slit (fixing part, guide part)
31-33 Stepped part (fixed part)
51-53 Slit (fixed part, guide part)

Claims (3)

In an electronic device apparatus including a housing containing a heat generating component and a fan for blowing air attached to the inside of the housing, the fan outlet being disposed toward one side of the housing,
An electronic apparatus having an opening facing the fan inlet, and a wind direction plate attached in close contact with the fan is disposed inside the housing so as to close a cross-sectional opening of the housing. .   The electronic device apparatus according to claim 1, wherein a guide portion that engages with a peripheral edge of the wind direction plate is provided in the casing.   The electronic device apparatus according to claim 1, further comprising a fixing portion that allows the wind direction plate to be attached and fixed to the housing without using a stopper.

Images