WO2009130754A1

WO2009130754A1 - Electronic equipment

Info

Publication number: WO2009130754A1
Application number: PCT/JP2008/057703
Authority: WO
Inventors: 英之藤川; 先勝加藤
Original assignee: 富士通株式会社
Priority date: 2008-04-21
Filing date: 2008-04-21
Publication date: 2009-10-29

Abstract

An electronic equipment equipped with a housing having electronic parts disposed therein, adapted to cover the electronic parts and provided with a suction port. In order to realize a simple structure ensuring high dust removing capability, the electronic equipment is equipped with a housing having electronic parts disposed therein, adapted to cover the electronic parts and provided with a suction port. Inside the suction port, there is provided a suction chamber furnished with an air intake port for introduction of the air of the suction chamber in a deeper area within the housing, which air intake port consists of multiple holes whose size of cross section intersecting with the direction of suction air inflow from the suction port is greater than the size of the suction port, the multiple holes disposed in dispersed form over an area broader than the size of the suction port on the plane opposite to the suction port.

Description

Electronics

This case relates to an electronic device provided with a housing having an electronic component disposed therein, which covers the electronic component and has an air inlet.

For example, an electronic device such as a personal computer (hereinafter abbreviated as “PC”) incorporates a heat generating electronic component such as a CPU inside the housing, and the heat dissipation of the heat generating electronic component itself and the temperature rise inside the housing. In order to suppress this, a structure in which the inside of the housing is air-cooled with an intake port and an exhaust port is employed.

Here, one of the problems with this air-cooling structure is that external dust is sucked into the housing. If dust is sucked into the case and attached to the inside of the case, the air flow inside the case will be hindered and air cooling performance will deteriorate, and it will also adhere to internal electronic components and wiring boards. There is a risk of malfunction due to short circuit between wiring.

In Patent Document 1, a plurality of air introduction plates inclined so as to change the direction of the air flow inside the suction port are provided, and a plurality of protrusions are provided on the surface of the air introduction plate, so that dust is forced on the portion. A structure for preventing dust from being deposited by being deposited is disclosed.

Further, Patent Document 2 discloses an air dust removing device in which dust is sinked by forming a zigzag flow path to generate turbulent flow to enhance dust removing ability.

However, even if the direction of the airflow is changed as in Patent Document 1, it is difficult to accumulate dust in the portion only by changing the direction of the airflow, and the possibility of the dust getting into the depth is reduced sufficiently. Is difficult.

In addition, as disclosed in Patent Document 2, it is considered that dust removal performance can be improved by generating turbulent flow at each zigzag bending angle, but in this case, an extremely large volume is required only for dust removal. It is extremely difficult to incorporate the structure into an electronic device casing such as a PC.
JP 2006-332154 A JP-A-6-152170

The problem of the electronic device disclosed herein is to provide an electronic device having a simple structure and a high dust removal capability in view of the above circumstances.

The electronic device of the present disclosure is an electronic device including a housing having an air inlet and an electronic component disposed inside and covering the electronic component,
Inside the intake port, the cross-sectional dimension that intersects the intake air flow direction from the intake port is wider than the intake port dimension, and is distributed in a wider area on the opposite side of the intake port than the intake port dimension. The electronic device is provided with an air intake chamber having a plurality of holes and an air intake port for taking the air in the air intake chamber deeper into the housing.

According to the electronic device of the present disclosure, the air sucked from the air intake port is temporarily decelerated in the air intake chamber, and by this deceleration, dust is left in the air intake chamber and passes through the air intake port to be further deep inside the housing. Is taken in. According to the electronic device of the present disclosure, an electronic device having such a simple structure and a structure with high dust removal capability is provided.

1 is an external perspective view of a personal computer (PC). It is the external appearance perspective view which looked at the back side of PC shown in FIG. It is the cross-sectional perspective view which showed the part of the inlet port of PC back surface. It is the figure which removed the back cover of the PC main body shown in FIG. 1, FIG. 2, and showed the internal structure. It is the perspective view which showed the single hard disk drive (HDD) and the holder which preserve | saves the HDD. It is the figure which showed the state which has arrange | positioned HDD in the opening of a holder. It is a figure which shows the part of one combination of two protrusions and two holes of a holder. It is a figure which shows the part of one combination of two protrusions and two holes of a holder. It is a perspective view of a fixture. It is a figure which shows the state by which the fixture was fixed on the main board | substrate. It is a figure which shows the state in which the holder holding HDD was put on the fixing metal fitting. It is the perspective view which removed the back cover of PC main body and showed the plane seeing from diagonally downward. It is the same perspective view as FIG. 12 which removed and showed some components from the state shown in FIG. It is the perspective view which removed the support plate from the display panel back surface, and showed the support plate and the display panel (back surface) side by side. It is the perspective view which showed the part of one fixing metal fitting. It is the top view which showed the lower end part of one fixing bracket. It is a figure which shows the part of a latching | locking part when a support plate gets on a fixing metal fitting. It is a figure which shows the state which the support plate slid down from the state shown in FIG. It is a figure which shows a state when a support plate is put on a fixing metal fitting. It is a figure which shows the state after sliding a support plate below with respect to a fixing metal fitting. It is the perspective view which removed the back cover of PC main body, and showed the back as seen from diagonally upward. It is the elements on larger scale of FIG. It is the perspective view which showed one place among the three antenna arrangement | positioning parts. It is the perspective view which showed the state by which the antenna was arrange | positioned at the antenna arrangement | positioning part. It is the perspective view which showed another antenna arrangement | positioning part by which the antenna was arrange | positioned. It is a figure which shows the antenna arrangement | positioning part by which the antenna is arrange | positioned, and a front frame. It is a figure which shows the antenna arrangement | positioning part by which the antenna is arrange | positioned, and a front frame. It is the perspective view which removed the back cover of PC main body, and showed the back as seen diagonally from the optical disk unit side. It is the figure which showed the state which made the optical disk unit slide only a little. It is the figure which showed the support plate after removing an optical disk unit. It is the figure which showed the surface on the side which contact | connects a support plate of an optical disk unit. It is a disassembled perspective view which shows the state which removed the holder, leaving the base plate of an optical disk unit on a support plate. It is the figure which showed the optical disk drive of the state hold | maintained at the holder. It is the figure which showed the holder and the optical disk drive of the state removed from the holder side by side.

Hereinafter, embodiments of the presently disclosed invention will be described.
(overall structure)
1 is an external perspective view of a personal computer (hereinafter abbreviated as “PC”), and FIG. 2 is an external perspective view of the back side of the PC shown in FIG.

The PC 10 shown in FIGS. 1 and 2 includes a PC main body 20 that holds a display panel 21 having a display screen 21a. The external shape of the front surface of the PC main body 20 includes a display screen 21a and a periphery of the display screen 21a. And a front frame 22 surrounding the frame. Under the front frame 22, an icon 22a by silk printing is displayed. The icon 22a represents a power button, and when the finger is placed on the icon 22a, the PC main body 20 is turned on.

The PC 10 shown in FIGS. 1 and 2 includes an arithmetic circuit made up of a CPU or the like on the back side of the display panel 21 in the same casing as the PC main body 20 that holds the display panel 21 having the display screen 21a. Has been.

Therefore, as a normal configuration of a PC, a keyboard is prepared separately to satisfy all functions as a PC. Since the embodiment of the present disclosure is not related to a keyboard, illustration and description of the keyboard are omitted here.

Further, the rear surface of the housing of the PC main body 20 is covered with a cover 29 after an air inlet 23 and an air outlet 24 are formed. The intake port 23 is for taking outside air into the housing of the PC main body 20, and the exhaust port 24 is for exhausting air heated in the housing.

Furthermore, although a power supply connection portion, a connector connection portion, and the like are arranged on the rear surface of the casing of the PC main body 20, description thereof is omitted here.

Further, the PC 10 shown in FIGS. 1 and 2 includes a turntable 90 and a support mechanism 91 that supports the back surface of the PC main body 20. The turntable 90 is a table for changing the orientation of the display screen 21a of the PC main body 20, and the support mechanism 91 is a mechanism for supporting the PC main body 20 at a desired height position of the user.

(Inlet structure)
FIG. 3 is a cross-sectional perspective view showing a portion of the air inlet on the back surface of the PC main body.

The intake port 23 has a plurality of columns 291 that are part of the rear cover 29 and are arranged in the horizontal direction. The intake port 23 includes a plurality of columns that are formed between the columns 291 and that are arranged horizontally. A hole 231 is formed.

An intake chamber 25 is formed inside the intake port 23. The intake chamber 25 is formed by an inner wall surface 292 of the rear cover 29, a wall 293 erected from the inner wall surface, and a shield plate 26. The vertical dimension h of the intake chamber 25 is several times wider than the vertical dimension d of the intake port 23, and the horizontal dimension is substantially the same as the horizontal dimension of the horizontally long intake port 23 shown in FIG. . As described above, the intake chamber 25 is formed such that the cross-sectional dimension that intersects the intake inflow direction from the intake port 23 is wider than the dimension of the intake port 23.

Further, the shield plate 26 plays a role of covering and electrically shielding internal electronic components, and the shield plate 26 is formed with a large number of holes 261. The numerous holes 261 are formed on the surface of the shield plate 26 forming the intake chamber 25, that is, the inner surface 292 of the casing on the side where the intake port 23 is formed, of the surfaces forming the intake chamber 25. Are distributed in a region wider than the size of the air inlet 23 on the opposite surface, and the air inlets for taking the air in the air intake chamber 25 further into the housing through these holes 261. 262 is formed.

As described above, in the PC according to the present embodiment, the air sucked from the air inlet 23 is once decelerated in the air intake chamber 25, and by this deceleration, dust remains in the air intake chamber 25 and passes through the air intake 262. Then, it is taken in further into the housing. That is, in this embodiment, a PC having such a simple structure and a structure with high dust removal capability is provided.

FIG. 4 is a diagram showing the internal configuration of the PC body 20 shown in FIGS. 1 and 2 with the back cover removed.

Here, the fan 27 and the heat radiation fin 28 are shown. The fan 27 is for forcibly exhausting the air in the housing. When the fan 27 rotates, air is taken in from the air inlet 23 shown in FIGS. 2 and 3, reaches the fan 27 through the inside of the housing, and the air blown out from the fan 27 passes through the gaps of the heat radiation fins 28. As a result, the air is exhausted from the exhaust port 24 (see FIG. 2). Even before the air passing through the housing reaches the fan 27, it is heated by taking heat from various electronic components inside the housing. However, the radiating fins 28 are in contact with a CPU (not shown) which is a heat generating electronic component. The air sent out by the fan 27 takes heat from the heat radiation fins 28 heated by the CPU and is then exhausted from the exhaust port 24.

4 includes the main board 30, the hard disk drive (HDD) unit 40 placed on the main board 30, and the main board 30. The main board 30 occupies the wide area on the right side of FIG. And an optical disk unit 50 connected by a connector (described later). Details of the HDD unit 40 and the optical disk unit 50 will be described later.

Further, here, a mounting bracket 63 extending vertically on the right side of FIG. 4 is provided. This mounting bracket 63 will also be described later.
(HDD mounting structure)
FIG. 5 is a perspective view showing a single hard disk drive (HDD) and a holder for storing the HDD.

The HDD 41 has a substantially rectangular plate shape in plan view, and an HDD connector 411 is provided on the front end surface. The HDD connector 411 is a connector that is combined with the mating connector when the HDD 41 is advanced with the front end surface on which the HDD connector 411 is disposed as the tip. Further, the HDD 41 has two engagement holes 412 formed on both side surfaces thereof. FIG. 5 shows an engagement hole 412 on one side of the front side of the engagement holes 412 on both sides.

The holder 42 is composed of two

holder members

421 and 422. These two

holder members

412 and 422 cooperate with each other to form an opening 42a in which the HDD 41 is disposed, and one of the two

holder members

421 and 422 is transverse to the other (arrow X− The lateral width of the opening 42a is expanded or reduced by the sliding. Further, by narrowing the lateral width of the opening 42a in a state where the HDD 41 is disposed in the opening 42a, both side surfaces of the HDD 41 are sandwiched and held by the holder 42a.

Here, two pins are provided on the side surfaces of the two

holder members

421 and 422 constituting the holder 42 that define the opening 42a. In FIG. 4, two pins 422 a provided on the side surface of one holder member 422 are shown.

FIG. 6 is a diagram showing a state in which the HDD is disposed in the opening of the holder.

In the state shown in FIG. 6, the opening 42a of the holder 42 is in a state where its lateral width is open.

As shown in FIG. 6, when the HDD 41 is disposed in the opening 42 a of the holder 42 and the lateral width of the opening 42 a is further narrowed, the pins (pins 422 a and the like) on both sides of the holder 42 are engaged with both sides of the HDD 41. The hole 412 (see FIG. 5) enters, whereby the HDD 41 is positioned with respect to the holder 42 and the HDD 41 is securely held by the holder 42.

One holder member 421 of the two

holder members

421 and 422 is formed with two protrusions 421a for clicking, and the other holder member 422 has two holes 422a into which the two protrusions 421a respectively enter. Is formed.

7 and 8 are diagrams showing a combination part of one of the two protrusions and the two holes of the holder. FIG. 7 shows the positional relationship between the protrusion and the hole when the lateral width of the opening is widened, and FIG. 7 shows the positional relationship between the projection and the hole when the lateral width of the opening is narrowed.

In the state where the width of the opening 42a is widened, the protrusion 421a is located outside the holder member 422 as shown in FIG. When one of the two

holder members

421 and 422 is slid with respect to the other to narrow the lateral width of the opening 42a, the protrusion 421 enters the hole 422a as shown in FIG. As described above, when the

holder members

421 and 422 are slid to widen or narrow the lateral width of the opening 42a, they slide with a click due to interference between the protrusion 42a and the holder member 422, and widen unless a certain force is applied. It is the structure which does not slide between the state which narrowed and the state narrowed.

The two

holder members

421 and 422 are respectively provided with screw fixing mounting

holes

421b and 422b at two locations, and these mounting

holes

421b and 422b overlap with each other with the lateral width of the opening 42a narrowed. Thus, a mounting hole 42b of the holder 42 is formed, and the holder 42 is screwed to a fixing bracket described below.

FIG. 9 is a perspective view of the fixing bracket.

The fixing bracket 43 is for attaching the holder 42 holding the HDD 41, and is fixed on the main board 30 (see FIG. 4).

The fixing metal 43 has an opening 43a in the center of which the HDD 41 held by the holder 42 is disposed, and guide rails 431 for guiding the holder 42 are formed on both sides of the opening 43a. .

Further, the fixing metal 43 is provided with a base 432 for placing the fixing metal 43 on the main board, which is bent so as to enter the opening 43a from the guide rail 431. Fixed metal pieces 43 are provided with fixed tongue pieces 433 at two locations. These fixed tongue pieces 433 are bent to the main board side, and the tip part is bent in the opposite direction, and a fixing hole 433a for screwing is formed at the tip part contacting the main board. Further, the fixing metal 43 is formed with a screw hole 434 for screwing the holder 42.

FIG. 10 is a diagram showing a state in which the fixing metal fitting shown in FIG. 9 is fixed on the main board.

A large number of electronic components such as a CPU are mounted on the main board 30, but the main board 30 is combined with the HDD connector 411 (see FIG. 5) as necessary parts for the description here. A board connector 31 is mounted. The board connector 31 is located at the front end of the opening 43a formed by the fixing bracket 43, the fitting surface 311 to be combined with the HDD connector 411 is turned sideways, and the fitting surface 311 is directed to the rear end side of the opening 43a. It is in the state of facing.

Furthermore, an insulating sheet 441 is disposed in the opening 43 a of the fixing metal 43 and is fixed on the main substrate 30 with a double-sided adhesive tape (not shown).

In this opening 43a, the HDD 41 is placed at a height that is not in contact with the main board 30. However, since printed wiring (not shown) exists on the main board 30, an insulating sheet 441 is attached to the opening 43a. Thus, contact between the printed wiring and the housing of the HDD 41 is surely prevented.

FIG. 11 is a diagram showing a state in which the holder holding the HDD is placed on the fixing bracket.

The holder 42 is placed on the fixing bracket 43 while holding the HDD 41. FIG. 11 shows a state immediately after the placement. After the holder 42 is placed on the fixture 43, it is slid forward (in the direction of arrow Y) while being guided by the guide rail 431 (see FIG. 10). By this slide, the HDD connector 411 is assembled with the board connector 31 (see FIG. 10) fixed on the main board 30.

Here, since the holder 42 is guided and slid by the guide rail 431, the HDD connector 411 and the board connector 31 face each other in a state of being positioned with respect to each other and are reliably combined.

In addition, an opening 43a is provided in the fixing bracket 43, and the holder 42 also has an opening 42a. The HDD 41 is arranged at a height that does not contact the main board 30, and the PC main body 20 is thinned and miniaturized. It contributes to.

When the holder 42 is slid forward (in the arrow Y direction) from the state of FIG. 11, the mounting hole 42b of the holder overlaps with the screw hole 434 of the fixing bracket 43, and the holder 42 is in that state, as shown in FIG. The fixing bracket 43 is screwed with a screw 442.
(Support plate mounting structure)
12 is a perspective view showing the back surface of the PC main body with the back cover removed as seen obliquely from below. FIG. 13 is the same as FIG. 12 with some components removed from the state shown in FIG. FIG. 14 is a perspective view showing the support plate and the display panel (rear surface) side by side with the support plate removed from the rear surface of the display panel.

FIG. 12 shows the fan 27, the heat radiation fin 28, the main board 30, the HDD unit 40, the optical disk unit 50, and the like, as in FIG. 4, and these display panels have the display screen 21a shown in FIG. 21 (shown in FIG. 14 is a back surface 21b of the display panel 21).

13 and 14, it can be seen that the optical disk unit 50 has been removed and the support plate 60 has spread. The holes and protrusions shown in the portion of the support plate 60 from which the optical disk unit 50 has been removed are responsible for attaching and detaching the optical disk unit, locking the support plate 60, and the like. It will be described later.

Further, the main substrate 30 spreads on the support plate 60 except for the part where the optical disk unit 50 is removed. 13 and 14, the fan 27 and the heat radiating fins 28 are also removed, and holes 301 for sucking air into the fan 27 formed in the main board 30 are shown. The target CPU 302 is shown. In addition, a connector 303 is fixed to the main substrate 30 on the optical disc unit side, with the fitting surface 303a to be assembled with the mating connector facing the optical disc unit side.

Further, the two support plates 60 are formed on the bottom surface 61 of the support plate, which is formed by being bent on the back side of the PC main body on the lower end side (front side in FIGS. 12 and 13) in addition to the portion spreading on the back surface of the display panel 21. And a support plate upper surface 62 formed by being bent on the back side of the PC main body on the upper end side (the back side in FIGS. 12 and 13).

In addition, screw holes (not shown) are formed on both side surfaces of the display panel 21, and a pair of left and right fixing brackets 70 are fixed to both side surfaces of the display panel 21 with screws. The fixing bracket 70 is fitted into the front frame 22 in a state where it is screwed.

Further, a front frame engaging hole 611 is formed in the support plate lower surface 61, and a front frame locking projection formed on the support plate lower surface 61 protrudes toward the support plate lower surface 61 in the front frame 22. A locking projection 222 that enters the hole 611 is formed.

The pair of fixing brackets 70 fixed to the left and right sides of the display panel 21 extend vertically along the left and right frame bodies 221 constituting the front frame 22, and the support plate 60 is attached to the pair of fixing brackets 70. It is placed and slid downward (front side in FIGS. 12 to 14). Here, each of the pair of fixing brackets 70 has a fastening portion 71 which is bent at the lower end of the PC main body and is erected on the back side of the PC main body and has a mounting hole 711 for screwing. A mounting hole 612 is also formed in the plate lower surface 61. When the support plate 60 rides on the pair of fixing brackets 70 and slides down, the mounting holes 711 formed in the fastening portion 71 of the fixing bracket 70 and the mounting holes 612 formed in the lower surface 61 of the support plate overlap to support. The plate 60 is fixed to the fixing bracket 70 using these mounting

holes

711 and 612.

Here, the fastening portions 71 are provided on both of the pair of fixing brackets 70 and the support plate 60 is fixed with two screws 718 (see FIG. 12). The fixing bracket 70 and the support plate 60 are as follows. Since it is locked by the locking mechanism described in (1), the screwing may be either left or right.

FIG. 15 is a perspective view showing a portion of one fixing bracket, and FIG. 16 is a plan view showing a lower end portion of one fixing bracket.

As shown in FIGS. 13 and 14, the fixing bracket 70 has a locking protrusion 72 that protrudes toward the side of supporting the support plate 60 and has a shape in which the center is widened.

The locking projections 72 are configured to lock the support plate 60 in a releasable manner by sliding relative to the support plate 60.

FIG. 17 is a view showing a portion of the locking portion when the support plate is placed on the fixing bracket, and FIG. 18 is a view showing a state where the support plate is slid downward from the state shown in FIG.

The left and right portions of the support plate 60 corresponding to the locking protrusions 72 provided on the fixing bracket 70 are formed with locking holes 63 having a wide lower side and a narrow upper side. When the support plate 60 is placed on the fixing bracket 70, the supporting plate 60 is placed so that the locking protrusion 72 of the fixing bracket 70 is aligned with the wide portion of the locking hole 63. In this way, the locking protrusion 72 protrudes above the surface on the opposite side of the support plate 60 (the surface of the support plate 60 on which the main board 30 or the like is mounted) through the locking hole 63. In this state, when the support plate 60 is slid downward relative to the fixing bracket 70, the locking protrusion 72 of the fixing bracket 70 has a narrow width of the locking hole 62 of the support plate 60 as shown in FIG. 18. It overlaps with the portion, and the support plate 60 is locked to the fixing bracket 70, so that the support plate 60 is not detached from the fixing bracket 70 even when the support plate 60 is lifted.

19 and 20 are diagrams showing a positional relationship between the fastening portion of the fixing bracket and the lower surface of the support plate. FIG. 19 is a diagram showing a state when the support plate is placed on the fixing bracket. FIG. It is a figure which shows the state after sliding down below with respect to a fixing metal fitting.

Before the slide, the lower surface 61 of the support plate is separated from the fastening portion 71 of the fixture 70 as shown in FIG. 19, and when the support plate 60 is slid downward, the support plate 60 is fixed as shown in FIG. While being locked by the metal fitting 70, the support plate lower surface 61 abuts against the fastening portion 71 of the fixed metal fitting 70 as shown in FIG. 20.

Also, due to this slide, the locking projection 222 provided on the front frame 22 enters the front frame locking hole 611 (see FIG. 14) provided on the lower surface 61 of the support plate.

In this state, the mounting hole 711 of the fastening portion 71 and the mounting hole 612 of the support plate lower surface 61 shown in FIG. 14 overlap, and further, screw holes (not shown) provided in the mounting member 63 also overlap. Are used and screwed with one screw 718 on each of the left and right as shown in FIG.

As described above, in the PC main body according to the present embodiment, the pair of fixing brackets 70 extending along the left and right edges of the display panel are used, and the support plate 60 on which a large number of electronic components are mounted is placed on the fixing bracket 70. Thus, the support plate 60 is locked to the fixing bracket 70 by being arranged and slid on the rear surface of the display panel 21. The PC main body of the present embodiment has such a simple structure, and can be easily assembled and disassembled.
(Antenna mounting structure)
FIG. 21 is a perspective view showing the PC main body with the rear cover removed and the rear surface seen obliquely from above, and FIG. 22 is a partially enlarged view of FIG.

21 also shows the main board 30, HDD unit 40, fan 27, heat radiation fin 28, optical disk unit 50, support plate 60, and the like.

A resin frame 80 extending to the left and right along the support plate upper surface 62 is fixed to the support plate upper surface 62 (see also FIG. 13) with screws 81, and 3 in the longitudinal direction (left and right direction). An antenna arrangement portion 82 is formed at a location. An antenna 89 is arranged at two antenna arrangement portions of the three antenna arrangement portions 82. The remaining one antenna arrangement portion 82 is a spare antenna arrangement portion, and no antenna is arranged here and is left empty.

Here, an engagement hole 83 is formed in the frame 80, and a locking claw 223 that enters the engagement hole 83 and fixes the front frame 22 to the frame 80 is formed in the front frame 22. . As described above, when the support plate 60 is placed on the fixing bracket 70 and slides downward, the locking claw 223 enters the locking hole 83 and the front frame 22 is fixed to the frame 80, so that the antenna 89 is fixed to the antenna arrangement portion 82. Details will be described below.

FIG. 23 is a perspective view showing one of the three antenna placement portions. Here, the front frame is removed and the antenna is removed from the antenna placement portion.

The frame 80 has an opening 821 that exposes a part of the upper edge of the front surface of the support plate 60 (the surface facing the back surface 21b (see FIGS. 14 and 15) of the display panel 21) in the antenna arrangement portion 82. . In this opening 821, an antenna grounding surface 600 formed by an exposed portion 603 that is a part of the front surface of the support plate and an exposed portion 623 that is a part of the upper surface 62 of the support plate that follows the exposed portion 603 is exposed. is doing.

The antenna 89 is a general-purpose product and has a base 891 that is grounded and a transmission / reception unit 892 that transmits and receives radio waves. The antenna placement unit 82 is in a posture in which the base 891 of the antenna 89 is in contact with the antenna ground plane 600. Be placed. Further, the antenna placement portion 82 is formed with a contact wall 822 that contacts the transmission / reception portion 892 of the antenna 89 when the antenna 89 is placed on the antenna placement portion 82. The contact wall 822 is a wall formed in the frame 80 that defines the exposed portion 623 of the support plate upper surface 62 of the opening 821 and rises vertically from the support plate upper surface 62.

That is, the base 891 of the antenna 89 has a bent shape in contact with both the exposed portion 603 on the front surface of the support plate 60 and the exposed portion 623 of the support plate upper surface 62, and the transmission / reception portion 892 of the antenna 89 has the contact wall 822. It has a shape that is further bent from the base 891 so as to be addressed to.

In addition, the antenna placement portion 83 has a protruding piece 823 that sandwiches the base portion 891 of the antenna 89 between the antenna grounding surface 600 of the support plate 60.

FIG. 24 is a perspective view showing a state where the antenna is arranged in the antenna arrangement portion.

The antenna 89 is arranged such that the base 891 is in contact with the antenna grounding surface 600 (see FIG. 23) and is pressed by the projecting piece 823.

FIG. 25 is a perspective view showing another antenna arrangement portion where an antenna is arranged.

The shape of the projecting piece 823 is slightly different from the antenna arrangement portion shown in FIG. 24, but the basic configuration is the same as that of the antenna arrangement portion shown in FIG.

FIG. 26 and FIG. 27 are diagrams showing the antenna arrangement portion where the antenna is arranged and the front frame. FIG. 26 shows a state before the front frame 22 is attached, and FIG. 27 shows a state after the front frame 22 is attached. ing. The above-described engagement holes 83 are formed on both sides of the antenna arrangement portion 82, and the engaging claws 223 of the front frame 22 enter the engagement holes 83 to fix the front frame 22 to the frame 80.

At this time, the projecting piece 823 constituting the antenna arrangement portion 82 is pressed by the pressing portion 224 which is a portion of the front frame 22 facing the projecting piece 823, whereby the projecting piece 823 is attached to the antenna 89. The base 891 is pressed against the antenna ground plane 600 of the support plate 60, and the base 891 of the antenna 89 is reliably in contact with the antenna ground plane 600 and is maintained at the ground potential.

As described above, according to the present embodiment, the antenna 89 is temporarily fixed by the protruding piece 823 by arranging the antenna 89 in the antenna arrangement portion 82, and the protruding piece 823 is attached by attaching the front frame 22. Thus, the antenna 89 is reliably pressed against the antenna ground plane 600 of the support plate 60. According to this embodiment, the general-purpose antenna 89 can be easily assembled and removed with such a simple structure, and after assembly, the antenna performance is maintained by reliable contact between the support plate 60 and the base portion 891.
(Removable structure between main board and optical disk unit)
FIG. 28 is a perspective view showing the PC main body with the rear cover removed, and the rear surface thereof viewed obliquely from the optical disk unit side.

The optical disk unit 50 includes a base plate 51, an optical disk drive 52 that is a flat electronic component, a holder 53 that holds the optical disk drive 52, and a circuit board 54. The optical disk drive 52 is an electronic component that accesses an optical disk loaded with an optical disk such as a CD or DVD that can be taken out freely. The optical disk drive 52 is supported by the base plate 51 while being held by the holder 53, and the circuit board 54 is fixed to the base plate 51. Here, the base plate 51 extends below the optical disk drive 52 in FIG. 28 in the region where the optical disk drive 52 is supported, rises between the optical disk drive 52 and the circuit board 54, and then rises to the circuit board 54. In the region for fixing the circuit board 54, the circuit board 54 is spread out in FIG.

The entire optical disk unit 50 is mounted on the support plate 60.

FIG. 28 also shows the main board 30 extending on the back side of the optical disk unit 50 and the HDD unit 40 arranged on the main board 30.

FIG. 29 is a diagram showing a state in which the optical disc unit 50 is slightly slid.

The optical disk unit 50 is configured to slide with respect to the support plate 60 (details will be described later). Here, the entire optical disk unit 50 slides in the direction of the arrow Z1 from the mounted state shown in FIG. A state in which the holder 53 constituting the optical disc unit 50 is further slid in the Z2 direction with respect to the base plate 51 is shown.

As described above, the optical disk unit 50 is slid with respect to the support plate 60 in the form of a module in which the entire optical disk unit 50 is integrated. Further, the holder 53 holding the optical disk drive 52 constituting the optical disk unit 50 is provided. , A double slide structure of sliding with respect to the base plate 51.

In FIG. 29, the connector 303 (see also FIG. 4) provided on the main board 30 is shown by the slide of the optical disk unit 50, and the circuit board 54 is provided by the slide of the holder 53. A connector 51 is also shown.

The connector 303 provided on the main board 30 is a connector combined with the connector 542 (see FIG. 31) provided on the back surface of the circuit board 54 when viewed from FIG. 29. The circuit board 54 shown in FIG. The connector 541 provided in the connector is a connector combined with a connector (not shown) provided in the optical disc drive 52.

30 is a view showing the support plate after the optical disc unit is removed, and FIG. 31 is a view showing the surface of the optical disc unit on the side in contact with the support plate.

As shown in FIG. 30, in the support plate 60, the locking hole 651 for locking the base plate 51 of the optical disk unit 50 and the locking of the optical disk unit 50 after locking are not accidentally removed. And a guide protrusion 653 for guiding the slide of the optical disc unit 50 are provided. The lock piece 652 has a cantilever shape, and a lock claw 652a is provided at the center.

Further, as shown in FIG. 31, the base plate 51 constituting the optical disk unit 50 has an engaging projection 511 that enters the locking hole 651 shown in FIG. 30 and a locking claw 652a. A stop projection 512 is provided. When mounting the optical disc unit 50 on the support plate 60, the optical disc unit 50 is placed on the support plate 60 so that the engagement protrusions 511 on the back surface of the base plate 61 are aligned with the wide portions of the locking holes 651 of the support plate 60. Put. At this time, the base plate 51 is in contact with the guide protrusion 653 and the slide is guided by the guide protrusion 653. When the optical disk unit 50 is slid to the main substrate 30 side on the support plate 60 in this state, the engagement protrusion 511 on the back surface of the base plate 52 moves to a narrow portion of the locking hole 651 of the support plate 60. A base plate 51 is fixed on the support plate 60. At this time, the locking projection 512 on the back surface of the base plate 51 gets over the lock claw 652a on the support plate 60, and the slide in the reverse direction is locked. Further, at this time, the connector 542 mounted on the back surface of the circuit board 54 constituting the optical disc unit 50 is combined with the connector 303 fixed to the main board 30.

When removing the optical disk unit 50, a thin rod-like object is inserted under the base plate 51 and the lock piece 652 is pushed, and the lock projections 512 on the lower surface of the base plate 51 and the lock claws 652a provided on the support plate 60 The optical disk unit 50 is slid in the direction away from the main board 30 as it is. Then, the engagement protrusion 511 on the back surface of the base plate 51 moves to a wide portion of the locking hole 651 provided in the support plate 60, and the optical disc unit 50 is lifted from the support plate 60 by lifting the optical disc unit 50 in this state. Can be removed.

As described above, the PC main body according to the present embodiment includes the main substrate 30 fixed to the support plate 60 extending on the back surface of the display panel 21 and the optical disc unit 50 supported by the same support plate 60. Is locked to the support plate 60 by sliding with respect to the support plate 60, or the lock is released by sliding in the opposite direction, and the connector 303 of the main board 30 is When the connector 542 of the circuit board 54 constituting the optical disk unit 50 is assembled and the locking is released by sliding in the opposite direction, the connection of these

connectors

303 and 542 is also released. With this structure, the optical disk unit 50 can be easily assembled and disassembled to the support plate 60, and the main board 30 can be easily connected to and separated from the optical disk unit 50. Removal is easy.

FIG. 32 is an exploded perspective view showing a state in which the holder 53 is removed while the base plate 51 of the optical disc unit 50 is left on the support plate 60.

The base plate 51 has a locking piece 511 on one side surface 51a. On the other hand, the holder 53 has a locking bulge portion 531 formed on one side surface 53a.

The holder 53 is guided by the side wall 51 a and the wall surface 51 b of the base plate 51, slides in a direction approaching / separating from the main substrate 30, and slides in a direction approaching the main substrate 30. Is engaged with and fixed to a locking piece 511 formed on the side surface 51 a of the base plate 50.

Further, by sliding toward the main board 30 side, the connector 541 provided on the circuit board 54 and the connector (not shown) provided on the optical disk drive 52 are coupled.

FIG. 33 is a view showing the optical disc drive held by the holder, and FIG. 34 is a view showing the holder and the optical disc drive removed from the holder side by side.

The holder 53 has a main member 534 on which the optical disc drive 52 is placed, and a slide plate 535 that slides against the main member 534 and presses one side surface of the optical disc drive 52. As shown in FIG. The optical disk unit 52 is placed on the holder 53 in a state where the plate 535 is expanded, and the slide plate 535 is narrowed as shown in FIG. 33, whereby the optical disk unit 52 is held by the holder 53.

Claims

An electronic device including a housing having an air inlet and an electronic component disposed therein and covering the electronic component,
Inside the intake port, a cross-sectional dimension intersecting with the intake inflow direction from the intake port is wider than the size of the intake port, and a region wider than the size of the intake port on the surface opposite to the intake port An electronic device comprising an air intake chamber having a plurality of holes distributed in the air and for taking in the air in the air intake chamber further into the housing.
The intake chamber is composed of an inner wall surface of the housing, a wall erected from the inner wall surface, and a shield plate that covers an internal electronic component and is formed with the air intake port. The electronic device according to claim 1.
The intake port is a horizontally long intake port, and the intake chamber includes the entire length of the intake port in the lateral direction, and is formed wider than the vertical width of the intake port in the vertical direction. The electronic device according to claim 1 or 2.
4. The electronic device according to claim 1, wherein the housing further includes an exhaust port, and a fan for forcibly exhausting air from the exhaust port is provided inside the housing. 5. .
5. The electronic apparatus according to claim 1, wherein a display screen for displaying an image is provided on a front surface, and the air inlet is formed on a back surface of the housing.