JP2007280281A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a notebook personal computer capable of efficiently discharging air passed through a radiation part out of a casing while simplifying the layout of a cable stored in the casing. <P>SOLUTION: The notebook personal computer comprises an equipment body 2 including a left wall 323 having a vent hole; a wiring board 13 stored in the equipment body 2 and mounted with an electronic part which generates heat during operation; a heat exchange part 46 disposed with a gap G from the left wall 323, which releases the heat from the electronic part; a fan 58 for blowing air to the gap G through the heat exchange part 46; and a retention member 71 disposed over the heat exchange part 46 and the inner surface of the left wall 323, which guides the air from the heat exchange part 46 to the vent hole and retains the cable C stored in the equipment body 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electronic device such as a notebook computer that cools a heat generating portion such as an electronic component by using a blowing means such as a fan.

2. Description of the Related Art In recent years, in electronic devices such as notebook computers, electronic components that process various information such as characters, sounds, and images, for example, MPUs (Micro Processing Units) have been highly integrated and enhanced. Along with this, the power consumption of electronic components has increased, and the amount of heat generated during operation has also increased rapidly. Therefore, an electronic device equipped with an air-cooling type cooling device that forcibly cools the electronic component in order to improve the heat dissipation of the electronic component has been disclosed (for example, see Patent Document 1).
The cooling device described in Patent Document 1 includes a heat receiving unit that receives heat from an electronic component, a heat exchange unit that releases heat from the electronic component, a heat pipe that transfers heat from the heat receiving unit to a heat radiating unit, And a fan for sending air to the heat radiating section.

In the cooling device as described above, the heat generated in the electronic component flows from the heat receiving portion through the heat pipe to the heat exchanging portion, where it is released to the air from the fan. And the air which became high temperature by heat exchange is exhausted out of the housing | casing from the vent formed in the side wall of the housing | casing.
JP 2003-97892 A

  By the way, the heat radiating part in the conventional electronic device is disposed with a gap with respect to the side wall of the housing. For this reason, the high-temperature air that has passed through the heat radiating portion may not be exhausted well from the vent and may convect in the housing.

  Moreover, in the conventional electronic device, various devices may be arranged on both sides of the cooling device. In such a case, the cable connecting the devices is arranged so as to bypass the cooling device. However, in recent notebook computers, the internal space of the housing tends to be narrowed, so that the arrangement of cables becomes complicated depending on the balance between the cooling device and the device.

  The present invention provides an electronic device in which the air that has passed through the heat radiating portion is efficiently discharged out of the casing, and the arrangement of the cables stored in the casing is simplified.

  An electronic device according to the present invention includes a housing including a wall portion in which a vent is formed, a substrate on which an electronic component that is housed in the housing and generates heat during operation is mounted, and a gap with respect to the wall portion. Arranged between the heat dissipating part and the inner surface of the wall part, the heat dissipating part for releasing heat from the electronic component, the air blowing means for sending air to the gap through the heat dissipating part, and the heat dissipating part. And a holding member for guiding the air from the heat radiating portion to the vent and holding the cable accommodated in the housing.

  According to the present invention, the air that has passed through the heat radiating portion is efficiently exhausted outside the housing. In addition, the arrangement of cables accommodated in the housing is simplified.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view of a notebook computer according to an embodiment of the present invention, and FIG. 2 is a perspective view of a portion provided with a cooling device for the notebook computer according to the embodiment.

  In the following description, the “front side” is the side closer to the user of the notebook computer 1, the “rear side” is the side farther from the user of the notebook computer 1, and the “left side” is the notebook computer 1. The right side is the right side as viewed from the user of the electronic device. Also, “upper” and “lower” are defined according to gravity.

  As shown in FIG. 1 to FIG. 2, a notebook personal computer (electronic device) 1 according to the present embodiment has a device main body (housing) 2. The device body 2 is formed in a box shape by a case 3 and a cover 4.

  The case 3 includes a rectangular base wall 31 that faces a desktop or the like when in use, and a peripheral wall 32 connected to the periphery of the base wall 31. Further, the peripheral wall 32 includes a front wall 321, a rear wall 322, a left wall 323, and a right wall 324. Among these, the left wall (wall portion) 323 extends right above the base wall 31, and a portion slightly behind the center in the front-rear direction has a high temperature from a heat exchange portion 46 (described later) of the cooling device 21. A plurality of vent holes 323a for discharging air are formed. The number and shape of the vent holes 323a are not particularly limited.

  The cover 4 is fixed to a flange portion (not shown) formed inside the side wall 3b, and a keyboard attaching portion 6 for attaching the keyboard 7 is formed at a predetermined portion thereof. And the liquid crystal display 12 is attached to the rear part of the cover 4 so that rotation is possible by the two hinge parts 11 arrange | positioned at intervals.

  A wiring board 13 is housed inside the device body 2. The keyboard 7 and the liquid crystal display 12 are electrically connected to the wiring board 13. Thus, when the keyboard 7 is operated, desired information is displayed on the liquid crystal display 12 in conjunction with the operation.

  A socket 14 is provided on the wiring board 13. An electronic component 15 such as an MPU is mounted on the socket 14. The electronic component 15 generates heat during operation. Therefore, the electronic component 15 is forcibly cooled by the cooling device 21 mounted in the device main body 2.

  FIG. 3 is a schematic view of the cooling device 21 according to the embodiment. As shown in FIG. 3, the cooling device 21 includes a heat receiving unit 24, a heat exchanging unit (heat radiating unit) 46, a heat pipe 22, and a fan 58, and a large amount generated in the electronic component 15 by these linkages. Heat is released to the outside of the device body 2.

  The heat receiving portion 24 has a rectangular plate shape, and is in close contact with the electronic component 15 mounted on the wiring board 13 by the spring member 28. The heat receiving portion 24 is a lump such as aluminum having a high thermal conductivity, and a mounting groove 25 is formed in the center of the heat receiving portion 24 over the entire length of the heat receiving portion 24.

  The spring member 28 includes a rectangular base portion 29 and four leg portions 30 extending from the four corners of the base portion 29. The base portion 29 is fixed to the upper surface of the heat receiving portion 24 with a screw 37. Each leg 30 extends from the base 29 toward the wiring board 13 and is fixed to a stud 41 provided on the wiring board 13 with a screw 42.

  As shown in FIG. 1 to FIG. 2, the heat exchanging portion 46 is arranged at a position corresponding to the vent 323 a formed in the left wall 323 so as to be close to the base wall 31 of the case 3. A gap G for absorbing the movement of the heat exchanging portion 46 is formed between the inner surface of the H.323. The heat exchanging unit 46 includes a large number of fins 47 arranged at a predetermined interval in the front-rear direction. Each of these fins 47 extends in the left-right direction, and the gap between the fin 47 and the fin 47 is directed to the vent hole 323a.

  The heat pipe 22 includes a first end portion 23a, a second end portion 23b, and a curved portion 23c that connects them. The first end portion 23a and the second end portion 23b form an angle of almost 90 degrees by the curved portion 23c.

  The first end portion 23 a of the heat pipe 22 is fitted in an attachment groove 25 formed in the heat receiving portion 24, and is fixed by caulking of the protruding portions 26 provided on both sides of the attachment groove 25. The second end portion 23 b of the heat pipe 22 penetrates all the fins 47 constituting the heat exchange unit 46 in the front-rear direction.

  That is, the heat exchanging portion 46 of the cooling device 21 is supported in a so-called cantilever manner by the heat pipe 22 extending from the heat receiving portion 24 fixed to the wiring board 13, and is movable according to the degree of thermal expansion of the heat pipe. It has become.

  The fan 58 is disposed on the opposite side of the left wall 323 with respect to the heat exchange unit 46. The fan 58 includes a fan case 51 and a fan main body 52.

  The fan case 51 is fixed to the base wall 31 of the case 3, and a suction port 51 a for sucking air in the device main body 2 is formed in a portion that becomes the upper wall of the fan case 51, and the heat exchange unit 46. An exhaust port 51b for exhausting the sucked air is formed in a portion corresponding to. It should be noted that the shape and size of the exhaust port 51 b almost correspond to the heat exchange unit 46.

  The fan main body 52 is accommodated in the fan case 51 and is supported so as to be rotatable about an axis perpendicular to the base wall 31 of the case 3. Accordingly, when the fan main body 52 rotates around the axis, the air in the device main body 2 is sucked from the suction port 51a and sent to the heat exchange unit 46 from the exhaust port 51b.

  4 is a plan view showing the vicinity of the cooling device 21 of the notebook computer 1 according to the embodiment, FIG. 5 is a side sectional view showing the vicinity of the cooling device 21 of the notebook computer 1 according to the embodiment, and FIG. It is a sectional side view which shows the vicinity of the cooling device 21 of the notebook type personal computer 1 concerning the embodiment.

  As shown in FIG. 2 and FIG. 4 to FIG. 6, the portion corresponding to the gap G between the heat exchanging portion 46 and the left wall 323 extends from the vicinity of the inner surface of the left wall 323 to the upper surface of the heat exchanging portion 46. Is disposed so as to cover the gap G from above.

  The holding member 71 includes a bottom wall 72 and two standing walls 73, and extends in the front-rear direction so as to straddle the front side and the rear side of the gap G. That is, the holding member 71 closes the upper portion of the gap G with the bottom wall 72. Thereby, the high-temperature air discharged from the heat exchanging section 46 is efficiently guided to the vent 323a formed in the left wall 323 without flowing upward from the gap G.

  The standing walls 73 and 73 are connected to the left edge and the right edge of the bottom wall 72, respectively, and the cable C is fitted in a groove portion 77 defined inside the standing walls 73 and 73. The height of the standing walls 73 and 73 is larger than the outer diameter of the cable C. Accordingly, when the cable C is fitted into the groove 77, the entire cable C is accommodated in the groove 77.

  A plurality of locking pieces 731 are formed at the upper end of each standing wall 73. These locking pieces 731 protrude inside the groove 77 and prevent the cable C fitted in the groove 77 from falling off. However, since the locking piece 731 is formed of an elastic resin, the presence of the locking piece 731 does not interfere when the cable C is fitted into the groove portion 77.

  The cable C connects the left rear corner in the apparatus main body 2, that is, the device D at the rear of the cooling device 21 and the wiring board 13 at the front side of the cooling device 21. The type of the cable C is not particularly limited, but a LAN cable is assumed in the present embodiment.

  As described above, the holding member 71 holds the cable C using the groove 77 defined inside the standing walls 73, 73 and uses the lower surface of the bottom wall 72 to clear the gap from the heat exchange unit 46. The high temperature air discharged to G is guided to a vent 323 a formed in the left wall 323.

  In addition, auxiliary guide plates 74 and 74 are provided below the holding member 71 so as to face each other. These auxiliary guide plates 74, 74 are arranged from the vicinity of the side surface of the heat exchanging portion 46 to the vicinity of the inner surface of the left wall 323, slightly on the front side of the heat exchanging portion 46 and slightly on the rear side of the heat exchanging portion 46. Is located in each.

  Each auxiliary guide plate 74 is fixed to the base wall 31 of the case 3, and the upper end portion thereof reaches the vicinity of the lower surface of the bottom wall 72 of the holding member 71. That is, the auxiliary guide plates 74 and 74 close the front part and the rear part of the gap G, respectively. Thereby, the high-temperature air discharged from the heat exchanging part 46 to the gap G is efficiently guided to the vent 323a formed in the left wall 323 without flowing back and forth from the gap G.

  In the notebook personal computer 1 configured as described above, when a large amount of heat is generated from the electronic component 15, the fan 58 is activated and air in the device main body 2 is sent to the heat exchanging unit 46. A large amount of heat from the electronic component 15 flows into the heat receiving unit 24 and is transferred to the heat exchange unit 46 through the heat pipe 22. The air from the fan 58 exchanges heat with the heat exchanging unit 46 that has become high temperature due to a large amount of heat from the electronic component 15, and flows into the gap G between the heat exchanging unit 46 and the left wall 323. The high-temperature air that has flowed into the gap G is guided to the vent 323 a formed in the left wall 323 by the bottom wall 72 of the holding member 71, the two auxiliary guide plates 34, and the base wall 31 of the case 3. And efficiently discharged outside the device body 2.

(Operation by this embodiment)
In the present embodiment, the holding member 71 uses the lower surface of the bottom wall 72 to guide the high temperature air from the heat exchanging portion 46 to the vent 323 a formed in the left wall 323 and is defined by the standing walls 73 and 73. The cable C is held along the left wall 323 using the groove portion 77 formed.

  Therefore, the high-temperature air that has passed through the heat exchanging unit 46 is efficiently exhausted to the outside of the apparatus body 2 through the gap G between the heat exchanging unit 46 and the left wall 323, and the device D on the rear side of the cooling device 21 The arrangement of the cable C connecting the wiring board 13 on the front side of the cooling device 21 is not complicated.

  Furthermore, since the holding member 71 has the function of holding the cable C and the function of guiding the high-temperature air from the heat exchanging unit 46 to the vent 323a, the limited internal space of the device body 2 can be effectively used. The

  In the present embodiment, the auxiliary guide plates 74 and 74 guide the high-temperature air of the heat exchange unit 46 to the vent 323 a formed in the left wall 323. Therefore, the high-temperature air that has passed through the heat exchange unit 46 is exhausted to the outside of the device body 2 more efficiently.

  In the present embodiment, the heat exchange unit 46 is close to the base wall 31 of the case 3. That is, there is almost no gap between the heat exchange part 46 and the base wall 31. Therefore, the high-temperature air that has passed through the heat exchange unit 46 does not flow into the interior of the device main body 2 from between the heat exchange unit 46 and the base wall 31.

  In the present embodiment, the holding member 71 straddles the front side and the rear side of the gap G. That is, the upper part of the gap G is almost completely covered by the holding member 71. Therefore, the high temperature air from the heat exchange part 46 does not flow into the upper side of the gap G.

  In the present embodiment, the holding member 71 sandwiches the cable C between the two standing walls 73 and 73. In addition, the height of the standing walls 73 and 73 is larger than the outer diameter of the cable C. Therefore, even if the high temperature air from the heat exchanging section 46 unintentionally flows upward from the gap G, the cable C is not damaged by the high temperature air.

  In the present embodiment, the holding member 71 includes a locking piece 731 for locking the cable C on the upper ends of the standing walls 73 and 73. Therefore, the cable C fitted in the groove 77 does not fall off the holding member 71.

  The present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

1 is a perspective view of a notebook computer according to an embodiment of the present invention. The perspective view which shows the vicinity of the cooling device of the notebook type personal computer concerning the embodiment. The schematic diagram of the cooling device concerning the embodiment. The top view which shows the vicinity of the cooling device of the notebook type personal computer concerning the embodiment. The sectional side view which shows the vicinity of the cooling device of the notebook type personal computer concerning the embodiment. The sectional side view which shows the vicinity of the cooling device of the notebook type personal computer concerning the embodiment.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Notebook-type personal computer (electronic device), 2 ... Device main body (casing), 13 ... Wiring board, 15 ... Electronic component, 22 ... Heat pipe (heat transfer means), 24 ... Heat receiving part, 31 ... Base wall, 46 ... heat exchange part (heat radiating part), 58 ... fan (air blowing means), 71 ... holding member, 73 ... standing wall (protective wall), 74 ... auxiliary guide plate, 323 ... left wall (wall part), 323a ... vent hole, 731 ... Locking piece, C ... Cable, G ... Gap.

Claims (10)

A housing having a wall portion formed with a vent; and
A board that is housed in the housing and on which electronic components that generate heat during operation are mounted;
A heat dissipating part that is arranged with a gap with respect to the wall part and that releases heat from the electronic component;
Blower means for sending air to the gap through the heat radiating part;
A holding member that is disposed between the heat radiating portion and the inner surface of the wall portion, guides air from the heat radiating portion to the vent, and holds a cable accommodated in the housing;
An electronic device comprising:   The electronic device according to claim 1, wherein the holding member holds the cable along an inner surface of the wall portion.   The electronic apparatus according to claim 1, wherein the holding member extends in parallel with the substrate along the inner surface of the wall portion and straddles both sides of the gap.   The electronic device according to claim 1, wherein the holding member includes at least two protective walls that sandwich and protect the cable.   The electronic device according to claim 1, wherein the holding member includes a locking piece for locking the cable.   An auxiliary guide plate is provided between the heat radiating portion and the inner surface of the wall portion, intersects with the holding member, and further guides air that has passed through the heat radiating portion to the vent hole. The electronic device according to claim 3.   The electronic apparatus according to claim 1, wherein the heat dissipating part is close to a base wall disposed on the opposite side of the holding member with respect to the heat dissipating part. A heat receiving portion for receiving heat from the electronic component;
Heat transfer means for transferring the heat received by the heat receiving portion to the heat radiating portion;
The electronic apparatus according to claim 1, further comprising:   The electronic apparatus according to claim 8, wherein the heat transfer unit is a heat pipe.   The electronic device according to claim 1, wherein the heat radiating unit is movable with respect to the housing.

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