JP2007272272A - Electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide electronic equipment whose heat radiation performance and waterproofness can be improved. <P>SOLUTION: First and second support bases 16 and 17 are respectively formed with first and second vent holes 26 and 27 for radiating heat from a heating section. A mounting section 13 is formed with a third vent hole 28 for radiating heat from the heating section. Then, the second support base 17 is formed with an inclined face 25b at a position corresponding to the first vent hole 26, and the second vent hole 27 is installed so as to be positioned at the upper side of the position of the perpendicular lower part of the first vent hole 26 on the inclined face 25b. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an electronic device such as a notebook personal computer provided with a keyboard attached to a housing of a device main body.

  As a conventional electronic device, for example, in a notebook personal computer (PC), a keyboard is assembled to a mounting portion provided in a housing on the device main body side that supports a display unit.

  In recent years, this type of notebook PC tends to increase the amount of heat generated by electronic components such as integrated circuits and electronic devices such as hard disk drive units arranged in the main body of the device.

  In conventional notebook PCs, the hot air generated in the device main body rises, so the keyboard itself placed above the electronic parts and the heat sink of the electronic parts also ensures heat dissipation and heat dissipation in the housing. It is demanded to improve.

For this reason, as a conventional notebook type PC, a through hole is provided in the support base constituting the keyboard, and a pin made of a material having good thermal conductivity is inserted into the through hole, and through this pin, A structure for radiating heat is employed (for example, Patent Document 1).
JP-A-11-149337

  However, as described above, the configuration in which the through hole is provided in the support base of the keyboard provides heat dissipation in the housing, but the liquid penetrates when the user accidentally spills liquid such as a beverage on the keyboard. There is a risk of entering the device main body from the hole and damaging the electronic components or the like with the liquid.

  Then, an object of this invention is to provide the electronic device which can improve heat dissipation and waterproofness.

  In order to achieve the above-described object, an electronic apparatus according to the present invention includes an operation member that is pressed, a first support member that supports the operation member, and a first support that is disposed below the first support member. And a second support member for supporting the member. In addition, the electronic device includes a housing in which an attachment portion to which an operation unit is attached is provided and a heat generating portion is disposed inside. The first and second support members are provided with first and second vent holes for radiating heat from the heat generating portion, respectively. Further, the attachment portion is provided with a third vent hole for radiating heat from the heat generating portion. The second support member is formed with an inclined surface at a position corresponding to the first ventilation hole, and the second ventilation hole is formed on the inclined surface with respect to a position vertically below the first ventilation hole. It is provided on the upper side.

  According to the electronic apparatus according to the present invention configured as described above, when liquid enters from the first ventilation hole of the operating means, the liquid that has entered from the first ventilation hole is vertically below the first ventilation hole. However, the liquid is smoothly discharged from the discharge hole of the second support member without entering the second ventilation hole located above the position below the vertical direction. Further, in this electronic device, heat from the heat generating portion is radiated from the third vent hole of the mounting portion, and can be radiated to the outside from the first vent hole via the second vent hole. .

  Further, the second support member provided in the electronic apparatus according to the present invention may be provided with a discharge hole for discharging the liquid that has entered from the first vent hole so as to communicate with the first vent hole.

  In the electronic device according to the present invention, the operation means is a keyboard in which a plurality of keys are arranged, and the first vent hole of the first support member rotatably supports the support leg that supports the key top. It may be a hole formed by cutting and raising the supporting piece. This simplifies the configuration and improves productivity.

  Note that the heat generating portion in the present invention refers to an electronic component such as an integrated circuit or an electronic device such as a hard disk drive unit. In addition, the discharge hole in the present invention refers to not only a so-called circular hole but also includes other shapes such as a U-shaped opening and a groove-shaped discharge path.

  As described above, the electronic device according to the present invention can improve heat dissipation and waterproofness.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

  As shown in FIG. 1, a notebook personal computer (PC) 1 includes a display unit (not shown) having a liquid crystal display panel, and a device main body unit 7 provided with an openable / closable display unit at one end. ing.

  The apparatus main body 7 includes a keyboard 11 as an operation unit having a plurality of arranged keys, and a housing 12 provided with a mounting portion 13 to which the keyboard 11 is attached.

  As shown in FIGS. 2, 3, and 4, the keyboard 11 includes a plurality of keys 15 as operation members to be pressed, and a first support base 16 as a first support member that supports these keys 15. And a second support base 17 as a second support member disposed below the first support base 16 and supporting the first support base 16.

  As shown in FIG. 4, each key 15 has a key top 21 that is pushed in, a so-called pantograph (scissers) type support mechanism 22 that movably supports the key top 21, and the key top 21 is returned to the initial position. And an elastic member 23 for applying an urging force to be applied.

  Each key 15 is disposed on a flexible circuit board 24 that transmits a control signal according to the operation state of the key top 21. The flexible circuit board 24 is provided with a piezoelectric element (not shown) that detects the pressed state of each key top 21. The flexible circuit board 24 is disposed on the first support base 16.

  For example, as shown in FIG. 5, each key 15 includes a first support base 16 and a second support base 16 that support the support mechanism 22 of the key top 21 in order to further reinforce the mechanical strength of the entire keyboard 11. A configuration in which a third support base 19 made of metal, for example, is further disposed between the support base 17 and the support base 17 may be employed. In this configuration, the flexible circuit board 24 is disposed below the first support base 16. The third support base 19 is provided with a vent hole 19a at a position corresponding to a first vent hole 26 of the first support base 16 described later. In this configuration, the second support plate 17 may be formed integrally with the third support plate 19 as necessary.

  The first support base 16 is formed of a metal material in a flat plate shape, and, as shown in FIGS. 1 and 3, radiates heat generated by an electronic component such as an integrated circuit as a heat generating portion or an electronic device such as a hard disk drive unit. A plurality of first vent holes 26 are provided at predetermined intervals along the row direction of the key arrangement. In the present invention, for the sake of convenience, the long side direction of the keyboard 11 is referred to as the row direction of the key arrangement.

  These first ventilation holes 26 are arranged between the first row and the second row, and the second row if the first row and the second row are arranged in order from the most front side in the key arrangement, that is, the palm rest side row. It is located between the third row and provided along the row direction of the key arrangement.

  In addition, although the 1st ventilation hole 26 was taken as the structure formed in the predetermined position of the 1st support base 16, some support mechanisms 22 of each keytop 21 are utilized as a 1st ventilation hole. The structure to do may be taken.

  As shown in FIG. 4, the first support base 16 is formed with support pieces 16 a that rotatably support the rotation shaft 22 b on the lower end side of the support leg 22 a of the support mechanism 22 of each keytop 21. ing. These support pieces 16 a are formed by cutting and raising a part of the first support base 16, and a cutout hole is formed in the first support base 16 by raising the support piece 16 a. By using these cutout holes as the first ventilation holes, the configuration can be simplified, and it is not necessary to separately process the first ventilation holes in the first support base 16, thereby improving productivity. Can be achieved.

  Similarly, the flexible circuit board 24 on which the keys 15 are arranged is formed with vent holes 24 a at positions corresponding to the first vent holes 26 of the first support base 16.

  The second support base 17 is formed by bending a metal plate. As shown in FIGS. 3 and 4, the second support base 17 is continuous with the rising wall 25a substantially orthogonal to the main surface of the keyboard 11, and the rising wall 25a. Inclined surfaces 25b are formed along the row direction of the key arrangement.

  The rising wall 25 a is formed substantially orthogonal to the main surface of the keyboard 11, so that the first support base 16 is well supported against the pressing operation of each key 15. In addition, since the space surrounded by the rising wall 25a and the inclined surface 25b is secured in the second support base 17, heat rising from the electronic component or electronic device side due to the air in this space is on the keyboard 11 side. Insulation effect to block the transmission to is obtained.

  The inclined surface 25b is inclined with the display unit side upward and the palm rest side downward. A plurality of second ventilation holes 27 for radiating heat generated by electronic components such as a circuit board on which an integrated circuit is mounted and an electronic device such as a hard disk drive unit are provided on the inclined surface 25b. It is located on the upper side of the vertically lower position. For this reason, the liquid that has flowed into the inclined surface 25b from the first vent hole 26 is prevented from reaching the second vent hole 27 and flowing in.

  Further, as shown in FIG. 6, at the lower end of the inclined surface 25b of the second support base 17, a discharge hole for discharging the liquid that has entered from the first vent hole 26 on both sides in the row direction of the key arrangement. 29 is provided in communication with the first vent hole 27. In addition, on both side surfaces of the housing 12, discharge ports 30 for discharging the liquid discharged from the discharge holes 29 of the second support base 17 to the outside of the housing 12 are provided for each row of the key array. Is provided. In addition, as the discharge hole 29, not only a so-called circular hole but also an opening having another shape such as a U-shape or a groove-shaped discharge path may be applied.

  As shown in FIG. 3, the attachment portion 13 has an attachment plate 31 made of, for example, a resin material. Further, as shown in FIG. 4, the mounting plate 31 is formed with a recess 31 a at a position corresponding to the inclined surface 25 b provided on the second support base 17 and the second ventilation hole 27. A plurality of third vent holes 28 for radiating heat generated by an electronic component such as an integrated circuit or a device such as a hard disk drive unit are provided in the recess 31a. Therefore, the third ventilation hole 28 is communicated with the first ventilation hole 26 and the second ventilation hole 27, respectively, so that hot air in the housing 12 can be released from the main surface side of the keyboard 11. Has been.

  Further, as shown in FIGS. 6 and 7, the liquid path from the discharge hole 29 to the discharge port 30 of the second support base 17 is a circuit on which an integrated circuit in which the liquid is disposed below the mounting plate 31 is mounted. It is sealed so as not to enter an electronic component such as a substrate or the electronic device 37 side.

  Further, as shown in FIG. 2, a card-type water cooling unit 33 as a liquid cooling means for cooling the inside of the device main body 7 is provided in the device main body 7 at a position corresponding to the lower side of the keyboard 11. It is arranged to be thermally connected to an electronic circuit or an electronic device that is a heat generating part. The card-type water cooling unit 33 is formed in a flat plate shape, and although not shown, a cooling circuit filled with a cooling liquid, a pump that circulates the cooling liquid in the cooling circuit, and heat dissipation that dissipates heat from the cooling liquid. Have a container.

  In addition, as shown in FIG. 3, the housing 12 is provided with an exhaust port 34 for exhausting hot air in the device main body 7 as an exhaust means on the back surface on the display unit side. A fan 35 is provided. The exhaust port 34 and the exhaust fan 35 are driven by the exhaust fan 35 so that air flows in the direction of the arrow F in FIG. The heat sink of the water cooling unit 33 is arranged in the device main body 7 so as to be cooled by the air flow. As described above, in this embodiment, the exhaust fan 35 is used for both the cooling of the water cooling unit 33 and the exhaust of the air in the casing 12, so that the heat in the casing 12 is efficiently radiated.

  In the present embodiment, the card-type water cooling unit 33 is taken as an example. However, for example, a configuration in which a heat sink and a heat pipe are combined may be used. Other configurations may be applied.

  With respect to the notebook PC 1 configured as described above, a state in which heat from the electronic components or the like in the device main body 7 is radiated and a state in which liquid that has entered from the keyboard 11 is discharged from the device main body 7 will be described.

  In the notebook PC 1, when the exhaust fan 35 is driven, external air is sucked into the housing 12 from the first and second ventilation holes 26 and 27. The air sucked from the first and second vent holes 26 and 27 is smoothly guided into the housing 12, and the hot air sucked from the third vent hole 28 flows along the direction of arrow F. And exhausted from the exhaust port 34.

  In the notebook PC 1 of the present embodiment, the first vent holes 26 are provided in two rows between the first row and the second row of the key arrangement and between the second row and the third row. Thus, the airflow flowing in the housing 12 is stabilized, and the air in the housing 12 can be efficiently radiated from the palm rest side to the back surface side of the housing 12.

  In addition, even when the exhaust fan 35 is not driven, the hot air rising upward from the attachment portion 13 side toward the keyboard 11 side passes through the second and third ventilation holes 27 and 28 and the first ventilation hole 26. Is exhausted smoothly.

  When liquid is spilled on the keyboard 11, the liquid applied to the keyboard 11 enters the device main body 7 from the first vent hole 26. However, the liquid that has entered through the first vent hole 26 flows into the inclined surface 25b, but flows into the second vent hole 27 that is located above the position below the first vent hole 26 in the vertical direction. Instead, it is guided downward along the inclined surface 25 b and discharged from the discharge hole 29.

  As shown in FIG. 6, the liquid discharged from the discharge holes 29 of the second support base 17 flows downward along the direction of the arrow and respectively from the discharge ports 30 provided on both side surfaces of the housing 12. It is discharged outside.

  Further, for example, as shown in FIG. 7, the discharge port 30 is arranged on the bottom surface side of both side surfaces of the housing 12 as necessary, and the liquid discharged from the discharge hole 29 of the second support base 17 is It may be configured to flow downward along the arrow direction in FIG. 7 and to be discharged to the outside from the discharge port 30 on the bottom surface side of the housing 12.

  As described above, in the notebook PC 1, the inclined surface 25b is formed at a position corresponding to the first ventilation hole 26 of the first support base 16, and the second ventilation hole 27 is formed on the inclined surface 25b. By providing the second support base 17 provided on the upper side of the lower side of the ventilation hole 26, heat dissipation can be ensured and waterproofing can be improved.

(Other embodiments)
Next, another embodiment will be briefly described with reference to the drawings. In other embodiments, the same members as those in the above-described embodiments are denoted by the same reference numerals for the sake of convenience, and description thereof is omitted.

  As shown in FIG. 8, the second support base 38 is preferably provided with a second ventilation hole 27 at a position vertically above the inclined surface 25 b. As a result, the liquid that has entered from the first vent hole 26 of the first support base 16 can be further suppressed from flowing into the second vent hole 27 from the inclined surface 25b.

  Further, as shown in FIG. 9, the second support base 39 may be formed by injection molding with, for example, a resin material, and the second ventilation hole 27 may be formed through the inclined surface 25b. According to this configuration, the housing 12 can be formed integrally with the attachment portion 13.

  In the notebook PC of this embodiment, a keyboard is applied as an operation unit. However, the keyboard is applied to a so-called touch panel that is pressed by a finger, a touch pen, or the like, or a touch screen attached to a display surface of a display unit. Of course, it is also good.

It is a top view which shows the keyboard with which the notebook type PC of this embodiment is provided. It is AA sectional drawing in FIG. It is BB sectional drawing in FIG. It is a schematic diagram which shows the principal part of the said AA cross section. It is a schematic diagram which shows the other example of a keyboard. It is a schematic diagram which shows the state from which the liquid which permeated from the keyboard is discharged | emitted. It is a schematic diagram which shows the other structure which discharges | emits the liquid which permeated from the keyboard. It is a schematic diagram which shows the other example of the 2nd supporting member. It is a schematic diagram which shows the further another example of a 2nd supporting member.

Explanation of symbols

1 Notebook PC
7 Device Body 11 Keyboard 12 Housing 13 Attachment 15 Key 16 First Support Base 17 Second Support Base 25b Inclined Surface 26 First Vent Hole 27 Second Vent Hole 28 Third Vent Hole 29 Discharge Hole

Claims (11)

An operation having an operation member to be pressed, a first support member that supports the operation member, and a second support member that is disposed below the first support member and supports the first support member. Means,
An attachment portion to which the operation means is attached is provided, and a housing in which a heat generation portion is disposed;
The first and second support members are provided with first and second ventilation holes for radiating heat from the heat generating part, respectively.
The attachment portion is provided with a third vent hole for radiating heat from the heat generating portion,
The second support member is formed with an inclined surface at a position corresponding to the first ventilation hole, and the second ventilation hole is located on the inclined surface at a position vertically below the first ventilation hole. Electronic equipment provided on the upper side than the above.   2. The electronic device according to claim 1, wherein the second support member is provided with a discharge hole for discharging the liquid that has entered from the first vent hole so as to communicate with the first vent hole.   The electronic apparatus according to claim 1, wherein the operation unit is a keyboard on which a plurality of keys are arranged.   The electronic device according to claim 3, wherein the first support member has a plurality of the first ventilation holes arranged between the keys to be pressed.   4. The electronic device according to claim 3, wherein the first support member is provided with a plurality of the first ventilation holes at intervals along the row direction of the key arrangement. 5.   The electronic device according to claim 3, wherein the first ventilation hole is a hole formed by cutting and raising a support piece that rotatably supports a support leg that supports a key top.   The exhaust system according to any one of claims 1 to 6, wherein the casing is provided with exhaust means for exhausting air sucked from the first vent hole through the second vent hole to the outside of the casing. The electronic device as described in the paragraph. A display unit for displaying information is provided at one end of the housing,
The first vent hole, the second vent hole, and the exhaust unit are arranged to flow air in the casing in a direction from the front side of the casing toward the display unit. Item 8. The electronic device according to Item 7.   The electronic device according to claim 1, wherein the housing is provided with a discharge port that communicates with the discharge hole of the second support member.   10. The electronic device according to claim 1, wherein a liquid cooling means for cooling the inside of the casing is provided in the casing at a position directly below the operation means.   Any one of Claims 1 thru | or 10 provided with the other support member provided between the said 1st support member and the said 2nd support member, and the other ventilation hole corresponding to the said 1st ventilation hole was provided. The electronic device of Claim 1.

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