US20110310549A1 - Mobile personal computer and electronic device - Google Patents
Mobile personal computer and electronic device Download PDFInfo
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- US20110310549A1 US20110310549A1 US13/115,847 US201113115847A US2011310549A1 US 20110310549 A1 US20110310549 A1 US 20110310549A1 US 201113115847 A US201113115847 A US 201113115847A US 2011310549 A1 US2011310549 A1 US 2011310549A1
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- board
- protrusion
- housing
- personal computer
- mobile personal
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1643—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being associated to a digitizer, e.g. laptops that can be used as penpads
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1615—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function
- G06F1/1616—Constructional details or arrangements for portable computers with several enclosures having relative motions, each enclosure supporting at least one I/O or computing function with folding flat displays, e.g. laptop computers or notebooks having a clamshell configuration, with body parts pivoting to an open position around an axis parallel to the plane they define in closed position
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/16—Constructional details or arrangements
- G06F1/1613—Constructional details or arrangements for portable computers
- G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
- G06F1/1637—Details related to the display arrangement, including those related to the mounting of the display in the housing
- G06F1/1641—Details related to the display arrangement, including those related to the mounting of the display in the housing the display being formed by a plurality of foldable display components
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- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Casings For Electric Apparatus (AREA)
Abstract
According to one embodiment, a mobile personal computer includes: a display panel with a display screen; a board assembly including a board and a component mounted on the board; and a housing including an outer housing constituting an outline and an inner housing arranged between the display panel and the board assembly, and houses the board assembly.
Description
- This application is based upon and claims the benefit of priority from Japanese Patent Application No. 2010-139820, filed Jun. 18, 2010, the entire contents of which are incorporated herein by reference.
- An embodiment described herein relates generally to a mobile personal computer and an electronic device.
- Electronic devices including a circuit board housed in housings are known.
- It is desired in electronic devices to increase the rigidity of housings while preventing inconveniences.
- A general architecture that implements the various features of the invention will now be described with reference to the drawings. The drawings and the associated descriptions are provided to illustrate embodiments of the invention and not to limit the scope of the invention.
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FIG. 1 is a perspective view of a mobile personal computer that is an electronic device according to one embodiment; -
FIG. 2 is a view illustrating a state in which a display panel of a second body is removed from the state ofFIG. 1 to expose an inside of the second body, in the embodiment; -
FIG. 3 is an exploded perspective view of the second body of the mobile personal computer in the embodiment; -
FIG. 4 is a perspective view of the mobile personal computer as viewed from the back thereof, in the embodiment; -
FIG. 5 is a perspective view illustrating a first usage state of the personal computer in the embodiment; -
FIG. 6 is a perspective view illustrating a second usage state of the personal computer in the embodiment; -
FIG. 7 is a perspective view of a third usage state of the personal computer in the embodiment; -
FIG. 8 is a sectional view taken along a line VIII-VIII ofFIG. 1 , in the embodiment; -
FIG. 9 is a sectional view taken along a line IX-IX ofFIG. 1 , in the embodiment; -
FIG. 10 is a plan view of an inner plate that is an inner housing of the second body of the mobile personal computer as viewed from the back (rear face), in the embodiment; -
FIG. 11 is a plan view of the inside of the second body of the mobile personal computer in a state in which the display panel of the second body is removed as viewed from the front (front face) thereof, in the embodiment; -
FIG. 12 is a plan view of the inside of the second body of the mobile personal computer in a state in which a case of the second body is removed as viewed from the back (rear face) thereof, in the embodiment; -
FIG. 13 is a plan view of the case of the second body of the mobile personal computer as viewed from the front (front face) thereof, in the embodiment; and -
FIG. 14 is a perspective view of the case that is an outer housing of the second body of the mobile personal computer as viewed from the front (front face) thereof, in the embodiment. - In general, according to one embodiment, a mobile personal computer comprises: a display panel with a display screen; a board assembly comprising a board and a component mounted on the board; and a housing comprising an outer housing constituting an outline and an inner housing arranged between the display panel and the board assembly, and houses the board assembly.
- According to another embodiment, an electronic device comprises: a display panel with a display screen; a board on which a component is mounted; and a housing configured to support the display panel in a state in which the display screen is exposed on a front face, and to house the board therein. The housing comprises an outer housing constituting an outline and an inner housing arranged between the display panel and the board.
- A mobile
personal computer 1 of a so-called notebook type that is an electronic device according to one embodiment comprises a rectangular and flatfirst body 2 and a rectangular and flatsecond body 3 as illustrated inFIG. 1 . Thefirst body 2 and thesecond body 3 are connected via ajoint portion 4 in a manner that thefirst body 2 and thesecond body 3 can pivot relative to each other. - The
first body 2 is provided with adisplay panel 6 such as a liquid crystal display (LCD) that is a display unit having atouch panel 5 arranged on a front face (display screen 6 a) thereof, and apush button mechanism 7, which are exposed on afront face 2 b that is an outer face of ahousing 2 a. On the other hand, thesecond body 3 is provided with adisplay panel 9 such as a LCD that is a display unit having atouch panel 8 arranged on a front face (display screen 9 a) thereof, and apush button mechanism 10, which are exposed on afront face 3 b that is an outer face of ahousing 3 a. In the embodiment, the width direction (lateral direction) of thesecond body 3 is referred to as an X direction, the direction toward a leading end of thesecond body 3 is referred to as a Y direction, and the thickness direction of thesecond body 3 is referred to as a Z direction for convenience. The X-axis, Y-axis and Z-axis are perpendicular to one another. - In an unfolded state as illustrated in
FIG. 1 , thedisplay panels push button mechanisms front faces display panels push button mechanisms housings touch panels push button mechanisms display panels - The
joint portion 4 is apart that connects thefirst body 2 and thesecond body 3, and is formed as a separate part from thefirst body 2 and thesecond body 3. Thejoint portion 4 connects anend 2 c of thefirst body 2 and anend 3 c of thesecond body 3 on the base end side. In central portions in the longitudinal direction ofedges ends rectangular notches joint portion 4 is inserted in onenotch 2 e and the other half thereof is inserted in theother notch 3 e. The length L of thejoint portion 4 is slightly smaller than the width of thenotches joint portion 4 is substantially the same as the total thickness of thefirst body 2 and thesecond body 3 in the folded state where one body lies on the other. - The
first body 2 and thejoint portion 4 are connected via afirst hinge mechanism 11A in a manner that thefirst body 2 and thejoint portion 4 can pivot relative to each other around a pivoting axis Ax1, and thesecond body 3 and thejoint portion 4 are connected via asecond hinge mechanism 11B in a manner that thesecond body 3 and thejoint portion 4 can pivot relative to each other around a pivoting axis Ax2. The pivoting axis Ax1 and the pivoting axis Ax2 are parallel to each other. In the embodiment, thefirst hinge mechanism 11A and thesecond hinge mechanism 11B are in cooperation with each other, and a relative pivoting angle of thefirst body 2 with respect to thejoint portion 4 around the pivoting axis Ax1 is the same as a relative pivoting angle of thesecond body 3 with respect to thejoint portion 4 around the pivoting axis Ax2. However, the relative pivoting directions of thefirst body 2 and thesecond body 3 with respect to thejoint portion 4 are opposite to each other. Accordingly, if a user opens one of thefirst body 2 and thesecond body 3 with respect to thejoint portion 4, the mobilepersonal computer 1 becomes the unfolded state, while if a user closes one of the bodies, the mobilepersonal computer 1 becomes the folded state. Further, if a user operates to open thefirst body 2 and thesecond body 3, the mobilepersonal computer 1 becomes the unfolded state, while if a user operates to close the bodies, the mobilepersonal computer 1 becomes the folded state. - In the embodiment, a
board 12 a (board assembly 12), on which at least a part of control circuits comprisingelectronic components 15 is mounted, is arranged in thehousing 3 a of thesecond body 3, for example, as illustrated inFIGS. 2 and 3 . Theboard 12 a and components such as theelectronic components 15 mounted on theboard 12 a constitute theboard assembly 12. Theboard 12 a is fixed on thehousing 3 a with screws 13 (seeFIG. 8 ) that are fixing members. In thefirst body 2, on the other hand, abattery 14 that is a device power supply on a back face side (rear face side) of thedisplay panel 6 as illustrated inFIG. 4 . The back face of thefirst body 2 has arecess 2 f formed to have a rectangular shape in rear view. Thebattery 14 is detachably attached in thehousing 2 a of thefirst body 2 in a state in which thebattery 14 covers therecess 2 f. In the embodiment, theboard assembly 12, in which the mainelectronic components 15 such as aCPU 16 are mounted, and thebattery 14 are arranged separately in thefirst body 2 and thesecond body 3. If theboard 12 a and thebattery 14 are arranged together in one of thefirst body 2 and thesecond body 3, disadvantages that the thickness of the body portion is increased or, conversely, that thebattery 14 and thus the capacity are more likely to be limited due to the restriction in the thickness, for example, are likely to be caused. In the embodiment, however, since theboard 12 a and thebattery 14 are arranged separately in thefirst body 2 and thesecond body 3, such disadvantages can be more easily avoided. It is to be noted that, in the embodiment, the weight of thefirst body 2 is larger than that of thesecond body 3 so as to place the mobilepersonal computer 1 more stably on a desk or the like in a first usage state U1 illustrated inFIG. 5 . - The mobile
personal computer 1 according to the embodiment can be also be used in a second usage state U2 illustrated inFIG. 6 and a third usage state U3 illustrated inFIG. 7 in addition to the first usage state U1 illustrated inFIG. 5 . The second usage state U2 is a usage state in which thefirst body 2 and thesecond body 3 are opened relatively widely and hands H holdside edge portions 2 g on both sides on thefirst body 2 in the width direction as illustrated inFIG. 6 . In this usage state, a user can operate thepush button mechanism 7 with thumbs T of the hands H holding thefirst body 2. The third usage state U3 is a usage state in which thefirst body 2 and thesecond body 3 are opened relatively widely and hands H hold aside edge portion 2 g on one side of thefirst body 2 in the width direction and aside edge portion 3 f on one side of thesecond body 3 in the width direction as illustrated inFIG. 7 . The second usage state U2 is the same as the first usage state U1 in the view provided to a user, but is different from the first usage state U1 in whether the mobilepersonal computer 1 is used in a state in which it is held by hands H in a standing posture or a sitting posture or in a state in which it is placed on a desk or the like. On the other hand, the usage state U3 is different from the first and second usage states U1 and U2 in that the display screens 6 a, 9 a of thedisplay panels - Specifically, the mobile
personal computer 1 according to the embodiment can be used in a first posture P1 in which aside 9 b of thedisplay screen 9 a of thedisplay panel 9 is positioned at the top (first and second usage states U1 and U2; seeFIGS. 5 and 6 ) and in a second posture P2 in which anotherside 9 c of thedisplay screen 9 a and aside 6 b of thedisplay screen 6 a are positioned at the top (third usage state U3; seeFIG. 7 ). Theside 6 b of thedisplay screen 6 a is a side away from a boundary portion Bd of the first andsecond bodies side 9 c of thedisplay screen 9 a and theside 6 b of thedisplay screen 6 a lie next to each other with the boundary portion Bd therebetween. In the embodiment, the first posture P1 of thedisplay screen 9 a corresponds to a third posture P3 of the twodisplay screens display screen 9 a corresponds to a fourth posture P4 of the twodisplay screens - Each of the
display panels display panels electronic components 15 mounted on theboard 12 a, and display images such as still images and moving images. Also in the embodiment, light producing images displayed on the display screens 6 a, 9 a of thedisplay panels transparent touch panels personal computer 1 comprise a control unit, a storage unit (such as a read only memory (ROM), a random access memory (RAM) and a hard disk drive (HDD)), an interface circuit, and various controllers. The mobilepersonal computer 1 also has a built-in speaker (not illustrated) for audio output. - As illustrated in
FIG. 2 , theCPU 16 that is a heat generator and theelectronic component 15 is mounted on theboard 12 a. Aradiator block 16 a is placed on a die (not illustrated) of theCPU 16, and aheat receiving portion 17 a of aheat pipe 17 that is a heat transport mechanism is placed on theradiator block 16 a. Theheat receiving portion 17 a is pressed against theradiator block 16 a by a pressingmember 18 fixed on theboard 12 a by thescrews 13 that are fastening members. With such a structure, heat generated at theCPU 16 that is a heat generator is transmitted to theheat receiving portion 17 a via theradiator block 16 a. - The
heat pipe 17 that is a heat transport mechanism has a tube made of a metal material (such as a copper alloy) having a relatively high heat conductivity and having an oval and flat cross-section, for example. One end of the tube is theheat receiving portion 17 a, the other end thereof is aheat radiating portion 17 b, and a portion between theheat receiving portion 17 a and theheat radiating portion 17 b is aheat transfer portion 17 c. A plurality offins 17 d made of a thin sheet metal material (such as a copper alloy) having a relatively high heat conductivity is arranged outside the tube of theheat radiating portion 17 b. In addition, afan 19 is arranged at a position in thehousing 3 a adjacent to theheat radiating portion 17 b. Thefan 19 has a flat appearance that is thin in the width direction of theboard 12 a, and comprises a rotor (not illustrated) configured to rotate around a rotary axis along a direction perpendicular to the front and rear faces of theboard 12 a. Thefan 19 exhausts air taken from the inside of thehousing 3 a throughair inlets 19 a provided on both sides in the axial direction of the rotary axis (on both the front side and the rear side), for example, through anair outlet 3 h opposed to theheat radiating portion 17 b by rotating the rotor with an electric motor. Specifically, airflow exhausted from thefan 19 blows to theheat radiating portion 17 b and thefins 17 d, whereby theheat radiating portion 17 b and thefins 17 d are cooled. Thefan 19 is arranged to be fitted in an L-shapednotch 12 b formed at a corner of theboard 12 a. - Referring to
FIGS. 1 , 2, 5 to 7, it will be appreciated that theheat receiving portion 17 a is positioned lower than theheat radiating portion 17 b in both the first posture P1 and the second posture P2 in the embodiment. If theheat pipe 17 that is a heat transport mechanism becomes a so-called top heat state in which theheat receiving portion 17 a is positioned upper than theheat radiating portion 17 b, a liquefied heat transport medium becomes difficult to flow from theheat radiating portion 17 b back to theheat receiving portion 17 a. Accordingly, the heat transport efficiency, namely the heat dissipation efficiency is reduced. In the embodiment, however, since theheat receiving portion 17 a is positioned lower than theheat radiating portion 17 b in both the first posture P1 and the second posture P2 that are defined as correct postures, it is possible to prevent reduction of the heat transport efficiency, namely the heat dissipation efficiency, caused by positioning theheat receiving portion 17 a upper than theheat radiating portion 17 b. In addition, in the first posture P1 and the second posture P2, the control unit can make a user aware of the posture by displaying an image in an orientation corresponding to each posture P1 or P2 on the display screens 6 a, 9 a based on a detection result of a posture sensor (not illustrated) arranged in thehousing 3 a of thesecond body 3. Further, by providing posture representing elements such as concaves and convexes or display elements on at least one of thefirst body 2 and thesecond body 3, it is possible to make a user aware of the first posture P1 and the second posture P2. - The
heat radiating portion 17 b is arranged at acorner 3 g of thehousing 3 a, which is a top end in the first posture P1 (FIGS. 5 and 6 ) and in the second posture P2 (FIG. 7 ) as illustrated inFIG. 2 . Inside thehousing 3 a, heat is likely to flow upward due to the airflow. Therefore, by arranging theheat radiating portion 17 b at thecorner 3 g of thehousing 3 a, which is the top end in the first posture P1 and the second posture P2, heat is less likely to remain inside thehousing 3 a. - In addition, as illustrated in
FIGS. 2 and 4 , theair outlet 3 h is formed in aside wall 3 i at thecorner 3 g of thehousing 3 a in the embodiment. Thus, the airflow, which is blown out from thefan 19 and heated while passing through theheat radiating portion 17 b arranged at thecorner 3 g, is more smoothly exhausted through theair outlet 3 h provided at thecorner 3 g of thehousing 3 a and closely opposed to theheat radiating portion 17 b. Accordingly, heat is less likely to remain inside thehousing 3 a. - In addition, as illustrated in
FIGS. 2 and 11 , theCPU 16, which is a heat generator, is arranged in a rectangular region An that comes on an upper side (namely, on the left side inFIG. 11 ) than a center Ct in the second posture P2 in front view of thedisplay screen 9 a (namely, in the view ofFIG. 11 ). Accordingly, the upward airflow generated by the heat of theCPU 16, which is a heat generator, in thehousing 3 a or the airflow drawn into thefan 19 travels a relatively long distance in thehousing 3 a, whereby it is possible to prevent the electronic components in a larger area in thehousing 3 a from being easily affected by the heat. In addition, if it is assumed that theCPU 16, which is a heat generator, is positioned at the center Ct, the heated air may remain in a region opposite to theair outlet 3 h across the center Ct in thehousing 3 a. In the embodiment, however, since theCPU 16, which is a heat generator, is arranged in a region on the side of theair outlet 3 h with respect to the center Ct in both the first posture P1 and the second posture P2, the heated air is more easily exhausted outside thehousing 3 a. In addition, in the embodiment, when a user hold thesecond body 3 with his/her hand H as illustrated inFIG. 7 , the user holds a side opposite to the rectangular region An across the center Ct with his/her hand H. Therefore, since the user holds with his/her hand H a region of thesecond body 3 that is away from theCPU 16 and theheat pipe 17, he/she can avoid holding a region that is heated by the heat from theCPU 16 and theheat pipe 17 in thehousing 3 a. Thus, the user can avoid feeling uncomfortable due to theheated housing 3 a when he/she holds the mobilepersonal computer 1 with his/her hand H. - As illustrated in
FIG. 3 , thehousing 3 a of thesecond body 3 comprises amask 20 and acase 21, which constitute an outer housing, and aninner plate 22, which is an inner housing. Themask 20 and thecase 21, which constitute an outer housing, are integrated with each other by screwing, engagement or fitting, and constitute an outline of thehousing 3 a. Theinner plate 22 that is an inner housing is fixed to themask 20 or the case 21 (thecase 21, for example) that is an outer housing by screwing or the like. Thehousing 3 a is configured to house thedisplay panel 9 in a manner that thedisplay screen 9 a thereof is exposed on the front face, and also house theboard 12 a. Theinner plate 22 is arranged at a position between thedisplay panel 9 and theboard 12 a, namely at the back of thedisplay panel 9 and in front of theboard 12 a. Theboard 12 a is fixed to theinner plate 22 with thescrews 13 that are fixing members. In the embodiment, thedisplay panel 9 is held between theinner plate 22 and thecase 21 with anelastic buffer material 23 interposed as illustrated inFIGS. 8 and 9 . As illustrated inFIG. 3 , a plurality ofribs 22 b (seeFIG. 3 ) that holds thedisplay panel 9 therebetween in the X direction and the Y direction is provided on theinner plate 22. Thedisplay panel 9 is held between theribs 22 b with an elastic buffer material (not illustrated) interposed. Alternatively, thedisplay panel 9 may be attached to thehousing 3 a by screwing, engagement or fitting. - The
mask 20 constitutes afront wall 3 k that form thefront face 3 b of thehousing 3 a. Themask 20 is formed in a rectangular frame extending along the circumferential edge of thedisplay panel 9, and has arectangular opening 3 m for exposing thedisplay screen 9 a of thedisplay panel 9 in the center thereof. Themask 20 can also be used as a base for attaching components such as a board and an antenna inside thehousing 3 a. Themask 20 may be formed of a metal material, a synthetic resin material, or the like. Thedisplay panel 9 is formed in a flat shape that is rectangular in front view and thin in the thickness direction (Z direction). - The
touch panel 8 is arranged to cover theopening 3 m of themask 20 as illustrated inFIGS. 8 and 9 . The front faces of thetouch panel 8 and themask 20 are bonded to atransparent cover 3 p made of a synthetic resin material or the like formed in a thin sheet, a film, or a plate with a double-sided tape (not illustrated) or an adhesive. Thetouch panel 8 and themask 20 are integrated via thecover 3 p. - The
inner plate 22 has a plate-like partition wall 22 a that is rectangular in plan view as illustrated inFIGS. 3 and 10 . A plurality of wall-like ribs 22 b, for example, is provided on thepartition wall 22 a so as to improve the rigidity. On aback face 22 c of thepartition wall 22 a, a plurality ofbosses 22 d that protrudes toward theboard 12 a at the back are provided. Thebosses 22 d each comprises aninternal thread hole 22 e formed therein. Thecrews 13 are fixed in thebosses 22 d, whereby theboard 12 a and other components (such as thefan 19 and a solid state drive (SSD) 29) are fixed to theinner plate 22. Thepartition wall 22 a also comprises a plurality of through-holes 22 f formed therein. The through-holes 22 f contribute to reduction in weight and improvement in air permeability. -
Brackets 22 g protrude laterally (in a direction along a XY plane) from the corners of thepartition wall 22 a. Thebrackets 22 g can be formed in an arm-shape, a tongue-shape or a flange-shape, for example. Further, through-holes 22 h through which thescrews 13 that fix theinner plate 22, which is an inner housing, to thecase 21, which is an outer housing, are inserted are formed in the corners or the tips of thebrackets 22 g. Thus, in the embodiment, thepartition wall 22 a on which theboard 12 a and the components are attached is supported by thecase 21 via the plurality ofbrackets 22 g. Accordingly, if an external force is applied to thepartition wall 22 a from the side of thecase 21 or if an inertial force acts on thepartition wall 22 a, thebrackets 22 g are elastically deformed, whereby it is possible to suppress the influence of the external force or the inertial force on thepartition wall 22 a and therefore theboard 12 a and the components . - In addition, a
protrusion 25 that protrudes toward afront face 12 c that is a surface of theboard 12 a is provided on theback face 22 c of thepartition wall 22 a. In the embodiment, theprotrusion 25 corresponds to a second protrusion. - The
board 12 a is formed in a rectangular shape as a whole except for a portion where thenotch 12 b in which thefan 19 is accommodated as illustrated inFIGS. 11 and 12 . In the embodiment, a number ofelectronic components 15 are mounted on both thefront face 12 c and a back face (rear face) 12 d of theboard 12 a. In the embodiment, relatively tallerelectronic components 15 are mounted on thefront face 12 c and relatively shorterelectronic components 15 are mounted on theback face 12 d. It is thus possible to prevent the height (thickness) of the board structure comprising theboard 12 a and theelectronic components 15 from being larger as compared to a case where the tallelectronic components 15 are mounted on both thefront face 12 c and theback face 12 d. - In the embodiment, a
SSD 24 that is a relatively tall (relatively thick)electronic component 15 having a relatively large mounting area is arranged on thefront face 12 c of theboard 12 a. TheSSD 24 is arranged like a wall as illustrated inFIGS. 8 and 9 in a space Sf between thefront face 12 c of theboard 12 a and theinner plate 22 on a side (right side inFIGS. 2 and 11 ) opposite to a side (left side inFIGS. 2 and 11 ) where theCPU 16 and thefan 19 are arranged as illustrated inFIGS. 2 and 11 . Accordingly, in the embodiment, theSSD 24 is arranged away from theCPU 16 and thefan 19 on the side opposite thereto so as to make the space Sf toward theCPU 16 and thefan 19 from theSSD 24 larger, and thereby to increase the amount of airflow flowing through the space Sf. - As illustrated in
FIGS. 4 , 11 and 13, anair inlet 3 j is provided in anend 21 b on the base end side of abottom wall 21 a of thecase 21. In the embodiment, theair inlet 3 j is formed as a collection of a plurality of (a number of) small holes through thebottom wall 21 a. Theair inlet 3 j (namely, the region where small holes are formed) is provided in a relatively elongated region along anedge 21 c. In a state where thesecond body 3 is assembled, anedge 12 e on the base end side (on the hinge mechanism side) of theboard 12 a is arranged away from theedge 21 c of thecase 21. Accordingly, an introduction portion of an airflow flowing from theair inlet 3 j, which is provided in thebottom wall 21 a of thecase 21 on a lateral side (laterally outside; the lower side inFIG. 11 ) of theedge 12 e toward the space Sf between thefront face 12 c of theboard 12 a and theinner plate 22 is formed in thehousing 3 a. Further, theSSD 24 is arranged away from theedge 12 e on thefront face 12 c of theboard 12 a. Accordingly, airflow Stf that is shown by a dashed arrow inFIG. 11 and flows from theair inlet 3 j to theair outlet 3 h is generated in the space Sf between thefront face 12 c of theboard 12 a and theinner plate 22. As illustrated inFIG. 8 , airflow Stb that is shown by a dashed arrow and flows from theair inlet 3 j to theair outlet 3 h is also generated in a space Sb between theback face 12 d of theboard 12 a and thebottom wall 21 a of thecase 21. - As illustrated in
FIGS. 11 and 12 , through-holes 26 (26A to 26E) into which screws 13 (13A to 13E) fixed to thebosses 22 d of theinner plate 22 are inserted are formed in theboard 12 a. The through-holes 26A to 26E are formed in the circumferential edge portion of theboard 12 a in view of the mounting efficiency of theelectronic components 15 on theboard 12 a. Additional capital letters at the end of reference numerals provided below are identifiers of combinations of corresponding components. - The
board 12 a is also provided with studs 27 (27F to 27J) that are component-to-be-fixed joined with the screws 13 (13F to 13J) that are fixing members for fixing components. In the embodiment, the pressingmember 18 and theSSD 24 are attached to thestuds 27 with thescrews 13. The studs 27 (27I, 27J) for theSSD 24 are provided in a manner embedded in theboard 12 a, and the studs 27 (27F to 27H) for the pressingmember 18 are provided in a manner protruding from thefront face 12 c of theboard 12 a. - The
case 21 that is an outer housing comprises thebottom wall 21 a formed in a rectangular shape in plan view (in front view) as viewed from the front and aside wall 21 d arranged around thebottom wall 21 a, and arecess 21 e surrounded by thebottom wall 21 a and theside wall 21 d is formed in thecase 21 as illustrated inFIGS. 13 and 14 . Therecess 21 e accommodates theboard 12 a, theinner plate 22, thefan 19 and theSSD 29. - At the corners in the
recess 21 e of thecase 21,bosses 21 f that are board fixing members for fixing theinner plate 22 that is an inner housing using thescrews 13 that are fixing members are provided. The corners of thecase 21 are portions that are near thebottom wall 21 a and theside wall 21 d and have relatively high rigidity. The corners are also portions whose rigidity can be easily increased by providing ribs or the like. Thus, by providingbosses 21 f, which support theinner plate 22 on which theboard 12 a is fixed, at the corners of thecase 21 having higher rigidity, it is possible to further easily suppress the influence of the external force acting on thecase 21 on theinner plate 22 and therefore on theboard 12 a. - The
bottom wall 21 a of thecase 21 is provided with a plurality of protrusions 28 (28A to 28E, 28I) protruding toward theback face 12 d of theboard 12 a. Theprotrusions 28A to 28E out of theprotrusions 28 are opposed to thescrews 13A to 13E (seeFIG. 12 ) that are fixing members for fixing theboard 12 a to thebosses 22 dA to 22 dE of theinner plate 22 that is an inner housing in an assembled state.FIG. 8 includes a cross-section of structures of theprotrusion 28E, thescrew 13E and theboss 22 dE out of theprotrusions 28A to 28E, thescrews 13A to 13E and thebosses 22 dA to 22 dE (seeFIG. 10 ). As illustrated inFIG. 8 , theprotrusion 28E and thescrew 13E are opposed to each other with a gap therebetween in the free state in the embodiment. Theprotrusion 28E and thescrew 13E may be structured to be in contact with each other in the free state, but it is preferable to provide a gap therebetween in the free state in terms of suppressing accumulation of manufacturing errors and abnormal noises. The structures of theother protrusions 28A to 28D, theother screws 13A to 13D and theother bosses 22 dA to 22 dD that are not illustrated inFIG. 8 are similar to those of theprotrusion 28E, thescrew 13E and theboss 22 dE illustrated inFIG. 8 . Theprotrusions 28A to 28E are each structured in a columnar shape having a cross-shaped cross-section as illustrated inFIGS. 13 and 14 . - With such structures, if the
bottom wall 21 a of thecase 21 that is an outer housing bends toward the inside of thehousing 3 a (upward inFIG. 8 ) as a result of being pressed by fingers of a user, theprotrusions 28A to 28E come in contact with theopposed screws 13A to 13E, respectively, and thereby thebottom wall 21 a is prevented from bending further. Thus, in the embodiment, the bending of thecase 21 that is an outer housing can be suppressed by a relatively simple structure in which theprotrusions 28A to 28E are provided to be opposed to thescrews 13A to 13E, respectively. Therefore, according to the embodiment, thehousing 3 a is less easily deformed due to the external force applied toward the inside of thehousing 3 a. If the thickness of thecase 21 is increased or thecase 21 is reinforced, for example, in order to suppress the bending of thecase 21 by increasing the rigidity, disadvantages may be caused such as an increase in weight of thecase 21 and an increase in trouble in the manufacture. In the embodiment, however, the structures that can suppress the bending of thecase 21 can be achieved without increasing so much weight and trouble in the manufacture. In the embodiment, theprotrusions 28A to 28E correspond to third protrusions. In the embodiment, corresponding ones of theprotrusions 28A to 28E, thescrews 13A to 13E and thebosses 22 dA to 22 dE constitute a second displacement controlling mechanism 31 (seeFIG. 8 ). - The protrusion 28I is opposed to the stud 27I (see
FIG. 12 ) provided in theboard 12 a or to an end of the screw 13I fixed to the stud 27I in the assembled state. The screw 13I, which is a fixing member for fixing theSSD 24 that is a component to theboard 12 a, is attached to the stud 27I. The protrusion 25 (seeFIG. 10 ) is arranged on theinner plate 22 at a position opposite to the protrusion 28I with respect to the stud 27I. Theprotrusion 25 is opposed to the head of the screw 13I (seeFIG. 11 ) in the assembled state. The protrusion 28I and theprotrusion 25 each have a columnar shape having a cross-shaped cross-section as illustrated inFIGS. 3 , 10, 13 and 14.FIG. 9 includes a cross-section of a portion of theprotrusions 28I and 25, the screw 13I and the stud 27I. As illustrated inFIG. 9 , the protrusion 28I and the stud 27I, thescrew 131 and theprotrusion 25, respectively, are opposed to each other with a gap therebetween in the free state in the embodiment. The protrusion 28I and the stud 27I, the screw 13I and theprotrusion 25, respectively, may be structured to be in contact with each other in the free state, but it is preferable to provide a gap therebetween in the free state in terms of suppressing accumulation of manufacturing errors and abnormal noise. - With such structures, if the
bottom wall 21 a of thecase 21 that is an outer housing bends toward the inside of thehousing 3 a (upward inFIG. 9 ) as a result of being pressed by fingers of a user, the protrusion 28I comes in contact with the opposed stud 27I (or the end of the screw 13I), the screw 13I comes in contact with theopposed protrusion 25, and thereby thebottom wall 21 a is prevented from bending further. Thus, in the embodiment, the bending of thecase 21 that is an outer housing can be suppressed by a relatively simple structure in which theprotrusion 25 is provided to be opposed to the screw 13I and the protrusion 28I is provided to be opposed to the stud 27I (or the end of the screw 13I). Thus, according to the embodiment, thehousing 3 a is less easily deformed due to the external force applied toward the inside of thehousing 3 a. If the thickness of thecase 21 is increased or thecase 21 is reinforced, for example, in order to suppress the bending of thecase 21 by increasing the rigidity, disadvantages may be caused such as an increase in weight of thecase 21 and an increase in trouble in the manufacture. In the embodiment, however, the structures that can suppress the bending of thecase 21 can be achieved without increasing so much weight and trouble in the manufacture. In the embodiment, the protrusion 28I corresponds to a first protrusion, and theprotrusion 25 corresponds to a second protrusion. In the embodiment, the protrusion 28I, theprotrusion 25, the stud 27I and the screw 13I constitute a displacement controlling mechanism 30 (seeFIG. 9 ) that controls relative approach between thebottom wall 21 a and thepartition wall 22 a. - As described above, in the embodiment, the stud 27I and the screw 13I are interposed between the protrusion 28I that is a first protrusion and the
protrusion 25 that is a second protrusion, and the protrusion 28I and theprotrusion 25 are not in direct contact with theboard 12 a. Therefore, deformation and damage of theboard 12 a are less likely to be caused as compared to a case where theprotrusions 25 and 28I are in contact with theboard 12 a. In the embodiment, the stud 27I and the screw 13I correspond to interposed components, the stud 27I corresponds to a component-to-be-fixed, and the screw 13I corresponds to a fixing member. The interposed components are not limited to a combination of a stud and a screw, but may be structured as a rivet that is a fixing member and a through-hole that is a fixed member provided in a board. - In addition, in the embodiment, the stud 27I and the screw 13I, which is used to fix the
SSD 24 that is theelectronic component 15 to theboard 12 a, are used as interposed components opposed to theprotrusions 25 and 28I. Therefore, the number of parts can be reduced, the mounting efficiency of theelectronic components 15 on theboard 12 a can be prevented from being reduced and the trouble in the manufacture can be reduced as compared to a case where the interposed components are provided as exclusive members. - In the embodiment, the stud 27I and the screw 13I corresponding to the interposed components are different from the
studs 27 and thescrews 13 used to fix the pressingmember 18 to theboard 12 a. Therefore, it is possible to suppress the influence of the external force applied via theprotrusions 25 and 28I on functions and operations of the pressingmember 18 and theCPU 16. Specifically, it is possible to prevent disadvantages such as reduction in the heat dissipation performance due to a decrease in the contact area of theheat receiving portion 17 a of theheat pipe 17 and theradiator block 16 a. - As can be seen in
FIGS. 11 and 12 , theprotrusion 25 and theprotrusion 281 are opposed to a portion in a circuit forming region inside of the circumferential edge of theboard 12 a in the embodiment. With such structures, it is possible to produce an effect of suppressing deformation of thehousing 3 a due to theprotrusions 25 and 28I described above also at a position opposed to inside of the circuit forming region where a point of theboard 12 a to be fixed to thehousing 3 a is difficult to define, namely a region near the center of thebottom wall 21 a of thecase 21 in the embodiment. - Further, with such a structure in which the circumferential edge of the
board 12 a is fixed to thehousing 3 a (theinner plate 22 in the embodiment) at a plurality of positions (positions at which the through-holes 26A to 26E are provided in the embodiment; seeFIG. 11 ), it is preferable to arrange theprotrusion 25 and the protrusion 28I at positions nearer to the center of gravity Cg (seeFIG. 11 ) of theboard 12 a than positions at which the protrusions are fixed. In this manner, it is possible to produce an effect of suppressing deformation of thehousing 3 a due to theprotrusions 25 and 28I also in the region near to the center of thebottom wall 21 a of thecase 21. Such structures can also produce better effect in terms of suppressing the bending of theboard 12 a. - In particular, in the embodiment, the positions where the circumferential edge of the
board 12 a is fixed to thehousing 3 a are provided at positions where theboard 12 a or thescrews 13A to 13E that are fixing members are interposed between theprotrusions 28A to 28E that are third protrusions and thebosses 22 dA to 22 dE that are component-to-be-fixed, respectively, and thereby the deformation of thebottom wall 21 a is suppressed by interference between theboard 12 a or thescrews 13A to 13E and theprotrusions 28A to 28E. Therefore, by arranging theprotrusion 25 and the protrusion 28I to be opposed to a portion in a circuit forming region inside of the circumferential edge of theboard 12 a or arranging theprotrusion 25 and the protrusion 28I to be opposed to positions nearer to the center of gravity Cg of theboard 12 a than positions at which theboard 12 a is fixed to theinner plate 22, it is possible to further distribute the positions at which the deformation of thebottom wall 21 a is suppressed and to produce the effect of suppressing the deformation due to theprotrusions bottom wall 21 a. - In the embodiment, the
studs 27, thescrews 13 and theprotrusions studs 27 are connected to ground electrodes (not illustrated) of theboard 12 a, whereby the ground potentials become easily equalized by contact between theprotrusions studs 27 or thescrews 13. - The mobile
personal computer 1 is desirably more lightweight since a user may hold it for use. In addition, thehousings personal computer 1 are required to have sufficient rigidity and strength to resist an external force applied by a user holding the housings. If the structure only includes the outer housing, it is difficult to balance such requirements in some cases. In the embodiment, however, it is structured such that thesecond body 3 is provided with theinner plate 22 that is an inner housing, and the parts of thesecond body 3 such as theboard 12 a and thedisplay panel 9 are supported using theinner plate 22, whereby it is relatively easier to balance the reduction in weight and the improvement in rigidity. - Thus, in the embodiment, the
board 12 a is fixed to theinner plate 22 that is an inner housing. Accordingly, it is possible to suppress the influence of an external force applied to the outer housing by a user holding thehousing 3 a on theboard 12 a, the parts and theelectronic components 15 as compared to a case where theboard 12 a is fixed to the outer housing. - In the embodiment, the
front face 12 c of theboard 12 a, which is a surface on which theCPU 16 that is a heat generator is mounted, is arranged on the side of thedisplay panel 9, and theinner plate 22 that is an inner housing having heat conductivity is arranged between theboard 12 a and thedisplay panel 9. Accordingly, the heat of theCPU 16 that is a heat generator acts less on thecase 21 that is an outer housing, and the heat dissipating property is increased by heat transfer through theinner plate 22 by making theinner plate 22 of a heat conductive material such as a metal material, whereby the temperature in thehousing 3 a is more easily decreased. - In the embodiment, the
bosses 21 f, which are component-to-be-fixed for fixing theinner plate 22 that is an inner housing to thecase 21 that is an outer housing, are provided at the corners of thecase 21. Thus, theinner plate 22 can be fixed to thebosses 21 f having relatively high rigidity of thecase 21, and it is therefore possible to further suppress the influence of an external force applied to the outer housing by a user holding thehousing 3 a on theboard 12 a, the parts and theelectronic components 15. - In the embodiment, the
inner plate 22 that is an inner housing comprises thepartition wall 22 a and thebrackets 22 g protruding laterally from thepartition wall 22 a, and thebrackets 22 g are fixed to thebosses 21 f that are component-to-be-fixed. Accordingly, by elastically deforming thebrackets 22 g, it is possible to further suppress the influence of an external force applied to the outer housing by a user holding thehousing 3 a on theboard 12 a, the parts and theelectronic components 15. - If the number of positions at which the
bottom wall 21 a of thecase 21 that is an outer housing and theboard 12 a are fixed is increased, for example, so as to suppress the bending of thebottom wall 21 a toward the inside of thehousing 3 a, the mounting efficiency of theboard 12 a becomes lower and the weight is likely to increase due to an increase in the number of fixing members for the fixing. In the embodiment, however, since the deformation of thehousing 3 a can be suppressed by providing theprotrusions housing 3 a as described above, fixing members or the like need not be added. Accordingly, it is possible to improve the rigidity of thehousing 3 a without increasing so much weight and trouble in the manufacture. - In addition, the mobile
personal computer 1 according to the embodiment has a structure in which theboard 12 a is held from both the front and rear sides in the thickness direction between protrusions provided on one of the outer housing and the inner housing and protrusions or bosses provided on the other. Accordingly, the rigidity of thehousing 3 a is easily improved with a relatively simple structure. In addition, since the portions or parts for other use (namely thestuds 27 and thescrews 13 that are interposed components, thebosses 21 f and thescrews 13 that are board fixing members, and the like) are used to hold theboard 12 a, disadvantages such as an increase in weight due to additional parts and a reduction in the circuit mounting efficiency of theboard 12 a are less likely to occur. - A preferred embodiment of the invention has been described above. However, the invention is not limited to the above-described embodiment, and various modifications can be made. For example, while an example in which the invention is embodied as a notebook type mobile personal computer having two display screens is described in the above-described embodiment, the invention may be embodied as other electronic devices having at least one display screen, such as a computer (notebook type, desktop type), a personal digital assistant (PDA), a smartbook, a smartphone or a mobile phone terminal, having one display screen.
- The specifications (such as systems, structures, shapes, materials, sizes, numbers, orientations, types and layouts) of the electronic device, display device, display screens, display panels, parts, board, housing, outer housing, inner housing, first protrusion, second protrusion, third protrusions, board fixing members, interposed components, fixing members, component-to-be-fixed, pressing member and the like may be modified as necessary in carrying out the invention.
- According to the embodiment, it is possible to provide a mobile personal computer and an electronic device capable of improving the rigidity of a housing while preventing disadvantages from being caused.
- While certain embodiments have been described, these embodiments have been presented by way of example only, and are not intended to limit the scope of the inventions. Indeed, the novel embodiments described herein may be embodied in a variety of other forms; furthermore, various omissions, substitutions and changes in the form of the embodiments described herein may be made without departing from the spirit of the inventions. The accompanying claims and their equivalents are intended to cover such forms or modifications as would fall within the scope and spirit of the inventions.
Claims (10)
1. A mobile personal computer comprising:
a display panel comprising a display screen;
a board assembly comprising a board and a component mounted on the board; and
a housing configured to house the board assembly, comprising an outer housing forming an outline and an inner housing between the display panel and the board assembly.
2. The mobile personal computer of claim 1 , further comprising:
a first protrusion on the outer housing and protruding toward a portion of the board assembly;
a second protrusion on the inner housing at a position opposite the first protrusion with respect to the portion of the board assembly, and protruding toward the portion of the board assembly; and
a displacement-controlling mechanism comprising the first protrusion, the portion of the board assembly, and the second protrusion, the displacement-controlling mechanism being configured to control relative approach between the outer housing and the inner housing by controlling contact of the first protrusion, the portion of the board assembly, and the second protrusion.
3. The mobile personal computer of claim 2 , wherein the first protrusion and the second protrusion protrude toward the portion of the board assembly positioned in a circuit-forming region inside a circumferential edge of the board.
4. The mobile personal computer of claim 2 , wherein
a circumferential edge of the board is fixed to the housing at a plurality of positions, and
the portion of the board assembly is positioned closer to a center of gravity of the board than the positions where the board is fixed to the housing.
5. mobile personal computer of claim 2 , wherein the portion of the board assembly positioned between the first protrusion and the second protrusion comprises a component provided on the board and interposed between the first protrusion and the second protrusion.
6. The mobile personal computer of claim 5 , wherein a fixing member is fixed to the interposed component.
7. The mobile personal computer of claim 5 , wherein the interposed component comprises a fixing member configured to be fixed to a second component.
8. The mobile personal computer of claim 5 , wherein
the board comprises a plurality of pairs of a fixing member and a second component to which the fixing member is fixed,
one or more of the plurality of pairs is configured to fix to the board a pressing member configured to press a heat pipe against the component mounted on the board, and
another of the plurality of pairs is the interposed component.
9. The mobile personal computer of claim 1 , further comprising:
a board-fixing member on the outer housing or the inner housing and to which the board is fixed;
a third protrusion on the other of the outer housing or the inner housing at a position opposite the board-fixing member with respect to the board and protruding toward the board-fixing member; and
a second displacement-controlling mechanism comprising the board-fixing member and the third protrusion, the second displacement-controlling mechanism being configured to control relative approach between the outer housing and the inner housing by controlling contact between the board fixing member and the third protrusion.
10. An electronic device comprising:
a display panel comprising a display screen;
a board on which a component is mounted; and
a housing configured to support the display panel in a state in which a front face of the display screen is exposed, and configured to house the board,
wherein the housing comprises an outer housing forming an outline and an inner housing disposed between the display panel and the board.
Priority Applications (1)
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US13/596,812 US9141142B2 (en) | 2010-06-18 | 2012-08-28 | Mobile personal computer and electronic device |
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JP2010-139820 | 2010-06-18 | ||
JP2010139820A JP4920098B2 (en) | 2010-06-18 | 2010-06-18 | Mobile personal computers and electronic devices |
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US13/596,812 Expired - Fee Related US9141142B2 (en) | 2010-06-18 | 2012-08-28 | Mobile personal computer and electronic device |
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USD830465S1 (en) * | 2017-04-06 | 2018-10-09 | Nintendo Co., Ltd. | Portable computer |
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Also Published As
Publication number | Publication date |
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JP2012003629A (en) | 2012-01-05 |
JP4920098B2 (en) | 2012-04-18 |
US20120320515A1 (en) | 2012-12-20 |
US9141142B2 (en) | 2015-09-22 |
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