JP2004072057A - Electronic device housing case and electronic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic device housing case for realizing sufficient noise reduction without impairing a cooling operation of a cooling fan, even when the electronic device is provided with the cooling fan rotating at a high speed in the inside, and to provide the electronic device. <P>SOLUTION: The case is provided with a case body 1A for covering the electronic device; a cable leading-out door 12 provided in the body 1A to pinch cables 101-104 extending from the electronic device 100, without making a gap; an introducing duct 20 for introducing air into the inside of the case from the outside of the case; an exhausting duct for exhausting the air into the outside of the case from the inside of the case; and a fan 30A for exhibiting an introducing/exhausting operation of air. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electronic device housing case that covers an electronic device such as a personal computer to reduce the noise, and a technique for reducing the noise of the electronic device.
[0002]
[Prior art]
2. Description of the Related Art There are electronic devices including a cooling fan for suppressing heat generation of an LSI built in the device, such as a personal computer and a digital AV device. In recent years, a powerful cooling fan has been used with an increase in the speed of an LSI, and the noise thereof has become noticeable. Further, many of such electronic devices are equipped with a module having a large operation sound, such as a hard disk, a CD-ROM drive, and a DVD drive.
[0003]
[Problems to be solved by the invention]
For example, when the electronic device is used in a quiet room, the noise generated by the electronic device is very annoying. Therefore, conventionally, noise has been reduced by a personal device such as reducing the number of revolutions of the cooling fan or sealing the hard disk in a metal box. However, such a work goes against the purpose of suppressing heat generation and does not satisfy both cooling and low noise.
[0004]
The present invention has been made in view of the above circumstances, and provides an electronic device housing case and an electronic device that can satisfy both cooling and noise reduction.
[0005]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a case body for covering an electronic device from which a cable is drawn out to attenuate noise emitted from the electronic device, and a case body provided in the case body, wherein the cable is opened from the case to the outside of the case. A cable exit door that allows the cable to be inserted into the case without leaving a gap in a closed state, an introduction duct that introduces air from outside the case into the case, and an exit duct that guides air from inside the case to the outside of the case An electronic device housing case comprising: a fan having a function of introducing and extracting air in the introduction duct or the extraction duct.
[0006]
According to the present invention, the noise transmitted to the outside of the case is attenuated by the case body covering the electronic device, and the leakage of the noise can be greatly reduced by the cable lead-out door at the cable lead-out portion where the noise easily leaks. Further, since outside air is introduced by the introduction duct, the extraction duct, and the fan, the temperature around the device can be reduced to the same temperature as the outside. In addition, by providing the introduction duct and the exit duct leading to the inside with a predetermined length, the noise leaking through the duct can be suppressed to a certain level or less. Therefore, even if the electronic device includes a powerful fan or the like for cooling, the noise can be reduced without hindering the cooling effect.
[0007]
In the first, second, and eighth aspects of the invention, the fan can exert an air introducing / deriving action by being provided, for example, near the opening end inside the case of the introduction duct or the extraction duct or in the duct path. .
[0008]
According to a second aspect of the present invention, there is provided a case body which covers an electronic device from which a first cable is drawn out to attenuate noise emitted from the electronic device, and a case body provided on a surface of the case body, wherein the first cable is provided inside a case. Continuation means (for example, a continuation connector or extension cable) that is electrically connected to the cable and electrically connected to the second cable outside the case to electrically continue the first cable and the second cable; ), An introduction duct that introduces air from outside the case into the case, an extraction duct that derives air from inside the case to the outside of the case, and a fan that acts to introduce and extract air in the introduction duct or the extraction duct. It is an electronic device housing case provided.
[0009]
According to the present invention, in addition to the noise transmitted to the outside of the case being attenuated by the case body covering the electronic device, the lead portion of the cable through which the noise is likely to leak is electrically pulled out by the continuation means, and the cable itself is physically moved. Since no withdrawal is performed, noise leakage can be greatly reduced. Further, since outside air is introduced by the introduction duct, the extraction duct, and the fan, the temperature around the device can be reduced to the same temperature as the outside. In addition, by providing the introduction duct and the exit duct leading to the inside with a predetermined length, the noise leaking through the duct can be suppressed to a certain level or less. Therefore, even if the electronic device includes a powerful fan or the like for cooling, the noise can be reduced without hindering the cooling effect.
[0010]
According to a third aspect, in the electronic device housing case of the first or second aspect or the electronic device of the eighth aspect, the introduction duct and the exit duct have a path length from an open end outside the case to an open end inside the case. Alternatively, the configuration is such that the shorter one of the length from the open end outside the case to the fan along the duct path is 5 cm or more.
[0011]
According to the present invention, the noise leaking from the duct can be suppressed low. In addition, the noise reduction effect is improved as the length of the duct path is longer, for example, 10 cm, 15 to 20 cm, and the shorter the path length is, for example, 3 cm, the more the air resistance increases. It is good to decide the width.
[0012]
According to a fourth aspect, in the electronic device housing case according to any one of the first to third aspects, a storage medium (such as a DVD disk or a flexible disk) that is provided in the case body and that is inserted into and removed from the electronic device in an open state. ) Or a tray on which the storage medium is mounted (e.g., a tray of a DVD disk drive) can be discharged to the outside of the case body, and the storage medium or the tray is sealed with respect to the case body in a state where the tray is housed in an electronic device. The door is provided with an exposure door that can be closed.
[0013]
According to the present invention, for example, it is possible to insert and remove a removable storage medium in an electronic device such as a computer or a game machine, and it is possible to greatly reduce noise leakage from that location.
[0014]
According to a fifth aspect, in the electronic device accommodating case according to any one of the first to fourth aspects, the inside of the case body can be sealed except for the openings of the introduction duct and the exit duct. And
[0015]
According to the present invention, noise leakage can be minimized. In addition, even if it is not a completely closed state, a small hole such as a needle hole does not significantly affect noise.
[0016]
A sixth invention is the electronic device housing case according to any one of the first to fifth inventions, wherein the introduction duct and the extraction duct are respectively provided along a surface of the case body, and a cross section of the duct is The case has a shape that is long in a direction along the surface of the case body and short in a direction orthogonal to the surface, and is provided so that an opening inside the case is opened in a direction substantially perpendicular to the surface of the case body. The configuration is such that the rotation axis of the fan is set to be substantially the same as the direction in which the opening of the duct opens. Note that a case where the duct is provided along a plurality of surfaces of the case body due to an increase in the path of the duct is also included.
[0017]
According to the present invention, since the direction of the fan and the direction of the duct path are substantially orthogonal to each other, the duct path can be narrowed even if a fan having a large diameter is used. This makes it possible to increase the amount of outside air introduced from the duct by using a fan having a large diameter, and to reduce the noise leak from the duct by narrowing the duct path.
[0018]
According to a seventh aspect of the present invention, in the electronic device housing case according to any one of the first to sixth aspects, a plate for sound wave isolation is provided in a path of the introduction duct or the extraction duct. did.
[0019]
According to this invention, the leakage of noise from the duct can be extremely reduced by the plate piece.
[0020]
An eighth invention provides a case body that covers an internal structure and attenuates noise generated from the internal structure, an introduction duct that introduces air from outside the case into the case, and a derivation that guides air from inside the case to the outside of the case. It has a duct and a fan that acts to introduce and extract air in the introduction duct or the extraction duct, and the case body can keep the inside of the case almost closed except for the openings of the introduction duct and the extraction duct. Electronic device.
[0021]
According to the present invention, low noise is realized by the case body and the duct, and the internal configuration can be sufficiently cooled by introducing outside air through the duct.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0023]
[First Embodiment]
FIG. 1 is a front perspective view of an electronic device housing case according to a first embodiment of the present invention, and FIG. 2 is a rear perspective view thereof.
[0024]
The electronic device housing case 1 according to the first embodiment houses a vertically long PC (personal computer) 100 called a tower type. A power cable 101, a video cable 102, connection cables 103 and 104 for a mouse and a keyboard are connected to the back of the PC 100, and a tray of a disk drive 110 for handling data disks such as CDs and DVDs is connected to the front of the PC. A drawer port 110a, a disk insertion port 120a of an FDD (flexible disk drive) 120, a power switch SW1, a reset switch SW2, and the like are provided.
[0025]
The electronic device housing case 1 mainly includes a box-shaped case body 1A that covers all six surfaces of the PC 100, that is, up, down, left, right, front and rear. The material of each surface of the case body 1A is made of a synthetic resin such as acrylic (transparent acrylic in FIGS. 1 and 2). The sound insulation can be further improved by using a member having a high sound insulation or a heavy member such as a metal.
[0026]
On the front side of the storage case 1, an exposure door 11 that exposes the tray drawer opening 110a and the disk insertion opening 120a of the PC 100 to the outside is provided. In addition, a cable leading door 12 for guiding the various cables 101 to 104 of the PC 100 to the outside is provided on the rear side. In addition, an introduction duct 20 for introducing outside air and a discharge duct 30 for discharging internal air are provided inside the storage case 1, and further, internal opening ends 21, 21 of the introduction duct 20 and the discharge duct 30 are provided. Fans 20A and 30A are attached to 31, and rotate by guiding the power supply of the PC 100.
[0027]
The exposure door 11 can be rotated by a hinge 11a and opened and closed, and can be closed while being pressed against a door frame 11c by a fastener 11b. An elastic material is stuck on the surface of the door frame 11c that the exposure door 11 contacts, so that when the exposure door 11 is closed, the elastic material comes into close contact with the exposure door 11 so that no gap is formed.
[0028]
FIG. 3 shows a partially enlarged view of the cable leading door 12. FIG. 3A shows a state where the door is open, and FIG. 3B shows a state where the door is closed.
[0029]
The cable lead-out door 12 is rotated by a hinge 12a to be opened and closed, and closed as shown in FIG. 3 such that an end surface 12b on a side on which the door rotates is overlapped with a surface 12d on one side of a door frame 12c. Holes 12h, 12h,... Are provided in a portion between the end face 12b and the surface 12d of the door frame 12c so as to cover both the door 12 and the door frame 12c, and the cable passes through the holes 12h, 12h. Derived outside. The holes 12h, 12h... Are respectively provided in diameters corresponding to the assumed thickness of the cable. When there is an unused cable, the hole 12h corresponding to the cable is closed with a columnar elastic body 12i therebetween. The center of the hole 12h is slightly displaced toward the door frame 12c, and the cable can be semi-fixed to the hole 12h provided on the door frame 12c in a state where the cable leading door 12 is open. ing.
[0030]
An elastic material 12e is attached to a surface of the door frame 12c where the cable lead-out door 12 contacts, and when the cable lead-out door 12 is closed, the elastic member 12e comes into close contact with the cable lead-out door 12 so that no gap is generated. Is to be. In addition, in the above-mentioned door 11 for exposure and door 12 for cable derivation, even if elastic material 12e is not provided, the door is closed without forming a gap between both by adjusting the shape of the overlapping portion of the door and the door frame. I can do it.
[0031]
FIG. 4 shows a detailed view of the introduction duct. 2A is a plan view, FIG. 2B is a cross-sectional view taken along line AA, and FIG. 2C is a cross-sectional view taken along line BB.
[0032]
The introduction duct 20 is provided along the inner side surface of the storage case 1, and has a cross section that is wide in the direction along the side surface of the storage case 1 and low in the height direction perpendicular to the side surface of the storage case 1. ing. The width W of the duct path is about the diameter of the fan 20A. The longer the length of the duct, the more the duct is formed to meander, so that the noise in the case can be further prevented from leaking to the outside. In addition, since the noise leakage can be reduced by forming the height h of the duct path to be low, it is preferable to form the duct as long as possible within a range where necessary and sufficient air can be blown. In addition, one side surface 20a of the introduction duct 20 may be configured by the side surface of the housing case 1, so that the number of components can be reduced and the thickness of the introduction duct 20 can be reduced.
[0033]
A large number of sound insulating plates 25 are provided in the introduction duct 20 so that the space does not connect linearly from the inner open end 21 to the outer open end 22. Thus, while the air flows in a bypass, the sound waves can be attenuated by reflection without directly going outside.
[0034]
The opening end 21 inside the case of the introduction duct 20 is opened in a direction orthogonal to the inner side surface 20a of the housing case 1 as shown in FIGS. Opening diameter. The fan 20A is attached to the opening end 21 via an interference member for preventing vibration. Note that the fan 20A may be mounted on another base and disposed so as to face the opening end 21, thereby easily preventing the vibration of the fan 20A. The fan 20A is preferably a large fan having a diameter of, for example, 120 mm, a low rotation speed, and a silent design. Further, the opening end 21 and the fan 20A may be formed and arranged at a slight angle, or the opening end 21 may be formed slightly larger and longer so that the fan 20A is mounted on the way. good. The open end 22 of the introduction duct 20 that is connected to the outside of the case is disposed on the back side of the storage case 1.
[0035]
The outlet duct 30 is provided along the side surface opposite to the inlet duct 20, and has substantially the same configuration except that the fan 30A and the fan 20A have opposite air blowing directions. The opening ends of the introduction duct 20 and the extraction duct 30 outside the case may be shifted up and down, or the positions of the opening ends inside the case may be shifted up and down and back and forth. Also. Either of the fans 20A and 30A can be omitted.
[0036]
As described above, according to the electronic device housing case 1 of the present embodiment, the electronic device is substantially sealed except for the opening ends 22 and 32 of the introduction duct 20 and the extraction duct 30, so that the electronic device can be connected to the outside. Noise can be greatly reduced. In addition, by introducing outside air and discharging internal air by the introduction duct 20 and the discharge duct 30, the electronic device can be thermally brought into the same state as being outside, and the cooling effect of the electronic device can be reduced. Absent. That is, both low noise and cooling of the electronic device can be satisfied.
[0037]
[Second embodiment]
FIG. 5 is an exploded perspective view showing the structure of the back surface of the electronic device housing case 50 according to the second embodiment.
[0038]
The electronic device housing case 50 of the second embodiment is different from the electronic device housing case 1 of the first embodiment in the structure for guiding the cable of the electronic device to the outside, and the other configuration is the same. .
[0039]
A continuation connector 61 as a continuation means for continuing a power cable 101, a video cable 102, connection cables 103 and 104 for a mouse and a keyboard, respectively, is embedded on the back surface of the storage case 50 of this embodiment. A base plate 60 is provided. The continuation base plate 60 is detachably provided from a base plate frame 59 on the back surface of the storage case 50, and the base frame 59 and the base plate 60 can be fitted in a sealed state without any gap.
[0040]
According to such a continuation base plate 60, the cable connection port of the PC placed in the storage case 50 and the terminal 61a on the inner surface side of the continuation connector 61 are connected by the extension cable (first cable) 105 or the like. On the other hand, by connecting a power cable 101, a video cable 102, connection cables 103 and 104 for a mouse and a keyboard as second cables to terminals 61b on the outer surface side of the continuation connector 61, the PC 100 and the outside of the case are connected. The cables 101 to 104 are electrically connected.
[0041]
According to the electronic device housing case 50 as described above, both noise reduction and cooling of the electronic device can be satisfied.
[0042]
[Third Embodiment]
FIG. 6 is a rear perspective view illustrating an outline of an electronic device according to the third embodiment.
[0043]
The electronic device 70 of this embodiment is, for example, a main body of a personal computer, and has a tray drawer opening of a disk drive (not shown) and a FDD disk insertion opening at the front, and a power cable, a video cable, and a mouse at the back. , 720,... For connecting a connection cable for a keyboard or a USB cable or the like.
[0044]
In the electronic device 70, a system board (generally called a motherboard) having a mouse, a keyboard, and connectors 710 for connecting USB devices and having a CPU, a memory, and an expansion board (such as a video card) mounted thereon, a disk drive, An expansion board such as an FDD and a video card, and a power supply have a size and a screwing position in accordance with a standard of a general personal computer.
[0045]
However, in the electronic device 70 of this embodiment, these portions are externally connected to the portion 740 of the system board where the connector 710 is provided, the metal fitting portion 750 exposed outside the device of the expansion board, and the front portion of the disk drive. An elastic body or the like is interposed in the frame of the opening of the case that is exposed to the outside, and is brought into close contact with a portion exposed to the outside, so that a gap is not opened between the portion and the opening of the case. Even without an elastic body or the like, gaps may be eliminated by processing each opening to have a size and shape that just fits a portion exposed to the outside.
[0046]
In addition, the front part of the disk drive or the like is not mounted in a manner similar to a general personal computer with little care for the gap, but instead of the exposure door 11 shown in the first embodiment. By adding a similar configuration, this portion can be closed in a closed state, and noise leakage from this portion can be eliminated.
[0047]
Similarly, on the back surface of the electronic device 70, as in the case of a general personal computer, instead of using a format in which the connector portion of the system board and the metal portion of the expansion board can be attached without concern for the gap, the first device is also used. By adding the same configuration as the cable lead-out door 12 shown in the embodiment, it is possible to close this portion in a sealed state, and it is also possible to eliminate noise leakage from this portion.
[0048]
In the electronic device 70 of this embodiment, the power supply 755 is mounted in the case so as not to be exposed to the outside. The power supply device 755 is provided with a cooling fan and holes for exhaust air intake, both of which are arranged in a case so that air in the case is sent and received. The power supply cable 101 is led out to the outside by a lead-out door 760 having the same configuration as the cable lead-out door 12 of the first embodiment. In addition, if the surface where the cable connector 755a of the power supply device 755 does not have a hole for sending and receiving air is provided, it may be attached so that the surface where the connector is exposed outside the case. good. In this case, the deriving door 760 can be omitted.
[0049]
Further, the electronic device 70 is provided with the introduction duct 20, the extraction duct 30, and the fans 20A and 30A shown in the first embodiment, and thereby, the introduction and exhaust of outside air into the device are performed. Is supposed to do it.
[0050]
As described above, according to the electronic device 70 of the present embodiment, the cooling effect in the device is not reduced by the introduction duct 20 and the extraction duct, and the portions other than the openings of the ducts 20 and 30 are in a sealed state. So, for example. Even if the number of revolutions of a fan or the like for cooling each component in the apparatus is high, it is possible to considerably suppress the sound from leaking to the outside.
[0051]
Note that the electronic device housing case of the present invention is not limited to the above-described first and second embodiments, and various changes can be made without departing from the spirit of the invention. For example, the inside of the housing case was sealed except for the opening of the duct.For example, even if a small gap or a small hole is opened in the thick part of the case, the sound insulation effect is hardly affected. Absent. In addition, a power switch or a reset switch may be provided on the case body, or a thermometer for measuring the temperature inside the case body may be provided.
[0052]
Further, in the electronic device according to the third embodiment, the case is made of a highly sound-insulating member, or the case is doubled so as to enhance the sound insulation of the case itself, for example, to further enhance the noise reduction effect. You may do it.
[0053]
Further, in the electronic device housing case and the electronic device of the above embodiment, the duct path and the rotation axis of the fan are arranged substantially orthogonally, and the duct is made thin, but the duct diameter is increased by increasing the hole diameter of the duct. The path and the rotation axis of the fan may be arranged substantially linearly. In that case, a sound deadening material can be inserted into the duct to further improve the sound insulation.
[0054]
【The invention's effect】
According to the electronic device housing case of the present invention, even if the electronic device housed therein has a powerful fan or the like for cooling, the noise leaking to the outside is reduced without hindering the cooling effect. You can do it.
[0055]
Further, according to the electronic device of the present invention, even when a powerful fan or the like for cooling electronic components is provided inside, the noise leaking to the outside can be reduced without hindering the cooling effect.
[Brief description of the drawings]
FIG. 1 is a front perspective view showing an electronic device housing case according to a first embodiment of the present invention.
FIG. 2 is a rear perspective view of the electronic device housing case.
FIGS. 3A and 3B are partially enlarged views of the cable lead-out door of FIG. 2, in which FIG. 3A shows a state where the door is open, and FIG. 3B shows a state where the door is closed.
4A and 4B are detailed views showing the introduction duct of FIG. 1, wherein FIG. 4A is a plan view thereof, FIG. 4B is a sectional view taken along line AA of FIG. 1, and FIG. 4C is a sectional view taken along line BB of FIG.
FIG. 5 is an exploded perspective view showing the structure of the back surface of the electronic device housing case according to the second embodiment of the present invention.
FIG. 6 is a rear perspective view illustrating a schematic configuration of an electronic device according to a third embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Storage case 11 Exposure door 12 Cable derivation door 20 Introductory duct 20A Fan 30 Derivation duct 30A Fan 50 Storage case 61 Continuation connector 70 Electronic device

Claims (9)

A case body that covers the electronic device from which the cable is drawn out and attenuates noise emitted from the electronic device;
A cable deriving door that is provided on the case body and that allows the cable to be led out of the case to the outside of the case in an open state, and sandwiches the cable in a closed state without opening a gap,
An introduction duct for introducing air into the case from outside the case,
A lead duct for leading air from inside the case to outside the case,
An electronic device housing case, comprising: a fan that acts to introduce and extract air in the introduction duct or the extraction duct. A case body that covers the electronic device from which the first cable is drawn out and attenuates noise emitted from the electronic device;
The first cable and the second cable are provided on the surface of the case body, are electrically connected to the first cable inside the case, and are electrically connected to the second cable outside the case. Electrical continuation means (such as continuation connectors and extension cables)
An introduction duct for introducing air into the case from outside the case,
A lead duct for leading air from inside the case to outside the case,
An electronic device housing case, comprising: a fan that acts to introduce and extract air in the introduction duct or the extraction duct. The inlet duct and the outlet duct have a shorter path length from the open end outside the case to the open end inside the case, or the length from the open end outside the case to the fan along the duct path. The electronic device housing case according to claim 1, wherein the electronic device housing case is formed to be 5 cm or more. A storage medium provided in the case body and opened or removed from the electronic device in the open state, or a tray on which the storage medium is placed can be discharged to the outside of the case body, and the storage medium or the tray fits in the electronic device. The electronic device housing case according to any one of claims 1 to 3, further comprising an exposure door that can be closed in a closed state with respect to the case body in a state where the electronic device housing is located. 5. The electronic device according to claim 1, wherein the inside of the case body is configured to be in a sealed state except for the openings of the introduction duct and the extraction duct. 6. Equipment storage case. The inlet duct and the outlet duct are respectively provided along the surface of the case body, and the cross section of the duct has a shape that is long in a direction along the surface of the case body and short in a direction orthogonal to the surface, and An opening inside the case is provided so as to open in a direction substantially orthogonal to the surface of the case body,
6. The electronic device housing according to claim 1, wherein the fan is installed such that a rotation axis of the fan is substantially the same as a direction in which the opening of the duct is opened. Case. The electronic device housing case according to claim 1, wherein a plate for sound insulation is provided in a path of the introduction duct or the extraction duct. A case body that covers the internal configuration and attenuates noise generated from the internal configuration;
An introduction duct for introducing air into the case from outside the case,
A lead duct for leading air from inside the case to outside the case,
A fan that exerts an air introduction / extraction action in the introduction duct or the exit duct,
An electronic device, wherein the case body is capable of keeping the inside of the case substantially closed except for the openings of the introduction duct and the outlet duct. The inlet duct and the outlet duct have a shorter path length from the open end outside the case to the open end inside the case, or the length from the open end outside the case along the path of the duct to the fan, whichever is shorter. The electronic device according to claim 8, wherein the electronic device is formed to have a length of 5 cm or more.

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