Electronic device

Abstract

To obtain an electronic apparatus in which design change corresponding to an object to be cooled by a fan can be performed by changing a small number of elements.SOLUTION: The electronic apparatus of an embodiment comprises a chassis, a cover, a fan, a first substrate, a first connector, and a substrate unit. The chassis is provided with a storage chamber opened in a first direction. The cover is attachable to and detachable from the chassis. The cover is located on the side in the first direction of the chamber to cover the storage chamber. The fan, the first substrate, the first connector, and the substrate unit are stored in the storage chamber. The substrate unit includes a holder, a relay substrate, a second connector, a third connector, and an air guide member, and is attachable to and detachable from the chassis. The second connector is inserted to an insertion port of the first connector. With the cover removed from the chassis, the substrate unit is removable from the chassis in the first direction.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] Embodiments of the present invention relate to electronic devices.

Background Art

[0002] Conventionally, there has been known an electronic device including a housing, a first substrate housed in the housing, an intermediate substrate housed in the housing, connected to the first substrate, and capable of attaching and detaching an expansion card, and a fan housed in the housing.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] One of the problems to be solved by the present invention is to obtain an electronic device capable of making design changes according to the object to be cooled by a fan with a small number of element changes.

Means for Solving the Problems

[0005] The electronic device according to the embodiment includes a chassis, a cover, a fan, a first substrate, a first connector, and a substrate unit. The chassis is provided with a housing chamber that opens in a first direction. The cover is detachable from the chassis. The cover is located on the first direction side with respect to the housing chamber and covers the housing chamber. The fan is housed in the housing chamber and fixed to the chassis. The first substrate is housed in the housing chamber and fixed to the chassis. The first connector is provided with an insertion port that opens in the first direction and is provided on the first substrate. The substrate unit includes a holder, a relay substrate supported by the holder, a second connector protruding from the relay substrate in the direction opposite to the first direction, a third connector provided on the relay substrate and located in the first direction with respect to the second connector, and a ventilation member supported by the holder, and is detachable from the chassis. The second connector is inserted into the insertion port. An expansion card connector can be connected to the third connector. The ventilation member is located between the fan and the relay substrate and guides the air in the housing chamber moved by the fan to an object. In a state where the cover is removed from the chassis, the substrate unit is detachable from the chassis in the first direction.

Brief Description of the Drawings

[0006]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Embodiments for Carrying Out the Invention

[0007] Hereinafter, exemplary embodiments of the present invention will be disclosed. The configurations of the embodiments shown below, as well as the actions and effects brought about by the configurations, are examples. The present invention can also be realized by configurations other than those disclosed in the following embodiments. Further, according to the present invention, it is possible to obtain at least one of various effects (including derivative effects) obtained by the configuration.

[0008] Also, a plurality of embodiments disclosed below include similar components. Therefore, hereinafter, the same reference numerals will be given to those similar components, and duplicate explanations will be omitted. Note that in this specification, ordinal numbers are used only for distinguishing parts, members, parts, positions, directions, etc., and do not indicate order or priority.

[0009] [First Embodiment] <Configuration of Electronic Device 1> FIG. 1 is an exploded perspective view of the electronic device 1. In each of the following figures, for convenience, three mutually orthogonal directions are defined. The X direction is along the depth (front-rear direction) of the electronic device 1, the Y direction is along the width (left-right direction) of the electronic device 1, and the Z direction is along the height (up-down direction) of the electronic device 1.

[0010] As shown in FIG. 1, the electronic device 1 is a rack-mounted industrial computer and includes a housing 2. The housing 2 houses a board unit 3, 9, a fan unit 4, a first board 5, storage devices 6, 7, a power supply device 8, and the like. Note that the electronic device 1 is not limited to this example and can be configured as various electronic devices 1 such as a desktop personal computer, a video display device, a television receiver, a game machine, a video display control device, and an information storage device.

[0011] As shown in FIG. 1, the housing 2 is configured in a thin rectangular parallelepiped box shape in the Z direction. The housing 2 has a plurality of wall portions such as a bottom wall 2a, a top wall 2b, a front wall 2c, a left wall 2d, a rear wall 2e, and a right wall 2f. The front wall 2c, the left wall 2d, the rear wall 2e, and the right wall 2f are examples of side walls. The bottom wall 2a is also referred to as a lower wall or the like, and the top wall 2b is also referred to as an upper wall or the like.

[0012] Both the bottom wall 2a and the top wall 2b extend along a direction (XY plane) orthogonal to the Z direction and are provided parallel to each other with a space therebetween in the Z direction. That is, the thickness direction of the bottom wall 2a and the top wall 2b is along the Z direction. The bottom wall 2a is provided with a plurality of support portions that protrude in the direction opposite to the Z direction and support the housing 2 in a state of being separated from a placement portion such as a shelf, a desk, or a table (not shown).

[0013] The front wall 2c, the left wall 2d, the rear wall 2e, and the right wall 2f are connected to each other and extend in the Z direction from the bottom wall 2a.

[0014] Both the left wall 2d and the right wall 2f extend along a direction (XZ plane) orthogonal to the Y direction and are provided parallel to each other with a space therebetween in the Y direction. The left wall 2d extends between the Y-direction ends of the bottom wall 2a and the top wall 2b, and the right wall 2f extends between the Y-direction opposite ends of the bottom wall 2a and the top wall 2b.

[0015] The front wall 2c and the rear wall 2e both extend along a direction (YZ plane) orthogonal to the X direction and are provided parallel to each other with a spacing in the X direction. The front wall 2c extends across the ends of the bottom wall 2a and the top wall 2b in the direction opposite to the X direction, and the rear wall 2e extends across the ends of the bottom wall 2a and the top wall 2b in the X direction. The rear wall 2e is an example of the first side wall.

[0016] Also, an air inlet is provided in the front wall 2c. The air inlet is arranged on the side opposite to the X direction with respect to the fan unit 4 and is aligned with the fan unit 4 in the X direction. The air inlet is configured as a portion where a plurality of small holes provided in the front wall 2c gather.

[0017] Also, an exhaust port 2k is provided in the rear wall 2e. The exhaust port 2k is configured as a portion where a plurality of small holes 2k1 provided in the rear wall 2e gather. The exhaust port 2k can discharge the cooling air (air flow) of the fan unit 4 that has exchanged heat with the heat sink 16 etc. provided on the first substrate 5 to the outside of the housing 2.

[0018] Also, the housing 2 is configured by combining a plurality of components (divided bodies). Specifically, the housing 2 has a chassis 21 and a cover 22. The chassis 21 has a bottom wall 2a, a left wall 2d, a right wall 2f, a front wall 2c, and a rear wall 2e. The chassis 21 is provided with a housing chamber 2g surrounded by the bottom wall 2a, the front wall 2c, the left wall 2d, the rear wall 2e, and the right wall 2f and opening in the Z direction. The cover 22 has a top wall 2b. The cover 22 is located on the side opposite to the bottom wall 2a with respect to the housing chamber 2g and covers the housing chamber 2g. The cover 22 is detachably fixed to the chassis 21 by a coupling tool such as a screw. The cover 22 is removable in the Z direction with respect to the chassis 21 in a state where the coupling tool is removed. The housing 2 is made of a metal material such as stainless steel.

[0019] Also, the chassis 21 includes a fan holder 41. The fan holder 41 is arranged between the front wall 2c and the rear wall 2e and extends across the left wall 2d and the right wall 2f. The fan holder 41 is fixed to the bottom wall 2a by a coupling tool such as a screw.

[0020] The fan unit 4 has a fan holder 41 and a plurality of fans 42.

[0021] The fan holder 41 has a front wall 41a, a rear wall 41b, a left wall 41c, and a right wall. Both the front wall 41a and the rear wall 41b extend along a direction orthogonal to the X direction (YZ plane), and are provided parallel to each other with a space therebetween in the X direction. Both the left wall 41c and the right wall extend along a direction orthogonal to the Y direction (XZ plane), and are provided parallel to each other with a space therebetween in the Y direction. The left wall 41c extends between the Y-direction ends of the front wall 41a and the rear wall 41b, and the right wall extends between the ends on the opposite side in the Y direction of the front wall 41a and the rear wall 41b.

[0022] The plurality of fans are arranged in the Y direction. The fan 42 is fixed to the fan holder 41 by a fixing portion such as a screw. The fan 42 is exposed to the outside of the fan unit 4 through the openings provided in the front wall 41a and the rear wall 41b. The fan 42 blows air in the X direction.

[0023] The storage devices 6 and 7 are arranged between the front wall 2c and the fan unit 4 in the housing 2. Also, the storage devices 6 and 7 are arranged in the Y direction. The storage devices 6 and 7 are fixed to the front wall 2c and the bottom wall 2a. One of the storage devices 6 and 7 is an auxiliary storage device such as an HDD (Hard Disk Drive) or an SSD (Solid State Drive), and the other of the storage devices 6 and 7 is an external storage device such as an ODD (Optical Disk Drive).

[0024] The power supply device 8 is located at the corner between the rear wall 2e and the left wall 2d in the housing 2. In other words, the power supply device 8 is arranged between the rear wall 2e and the fan unit 4. The power supply device 8 has a fan 8a for cooling the inside of the power supply device 8.

[0025] The first substrate 5 is configured in a rectangular plate shape provided parallel to the bottom wall 2a with a space therebetween in the Z direction. The first substrate 5 is disposed between the rear wall 2e and the fan unit 4 within the housing 2. In other words, the size of the first substrate 5 is smaller than the size of the bottom wall 2a. The first substrate 5 is fixed to the bottom wall 2a. Also, the first substrate 5 is aligned with the fan unit 4 (front wall 2c) in the X direction. The first substrate 5 has an upper surface 5a facing the Z direction. The upper surface 5a is an example of the first surface. The first substrate 5 can also be referred to as a main board, a circuit board, a control board, etc.

[0026] FIG. 2 is an exemplary cross-sectional view of the electronic device 1 according to the first embodiment. As shown in FIG. 2, a plurality (two in this example) of CPUs 14 (Central Processing Units) and a plurality of electronic components such as the first connector 15 are provided on the upper surface 5a of the first substrate 5. The first connector 15 is provided with an insertion port 15a that opens in the Z direction. Note that in FIG. 2, only one of the plurality of CPUs 14 is shown. At least a part of the control circuit of the electronic device 1 is constituted by the wiring within the first substrate 5 and these plurality of electronic components. The CPU 14 is an example of a processor.

[0027] A heat sink 16 is attached to the upper surface of the CPU 14. The heat sink 16 and the CPU 14 are aligned with a space therebetween in the X direction. The heat sink 16 has a plurality of fins aligned in the Y direction with spaces therebetween.

[0028] <Configuration of the substrate unit 3> As shown in FIG. 1, the substrate unit 3 is disposed on the Z-direction side of the upper surface 5a of the first substrate 5 between the fan unit 4 and the rear wall 2e.

[0029] FIG. 3 is an exemplary perspective view plan view of the substrate unit 3 of the electronic device 1 according to the first embodiment. As shown in FIG. 3, the substrate unit 3 includes a holder 51, an intermediate substrate 52, and a ventilation member 53.

[0030] The holder 51 has a top wall 51a, a front wall 51b, a rear wall 51c, overhanging walls 51d, 51g, and a right wall 51e. The top wall 51a, the front wall 51b, the rear wall 51c, the overhanging walls 51d, 51g, and the right wall 51e are all configured in a flat plate shape.

[0031] The top wall 51a is in the shape of a flat plate extending along a direction orthogonal to the Z direction (XY plane).

[0032] Both the front wall 51b and the rear wall 51c extend along a direction orthogonal to the X direction (YZ plane), and are provided parallel to each other with a space therebetween in the X direction. The rear wall 51c is longer in the X direction than the front wall 51b. The front wall 51b extends from the end portion 51a1 on the X-direction side of the top wall 51a in the opposite direction of the Z direction, and the rear wall 51c extends from the end portion 51a2 on the X-direction side of the top wall 51a in the opposite direction of the Z direction.

[0033] An overhanging wall 51g is connected to the end portion of the rear wall 51c in the Z direction. The overhanging wall 51g projects in the X direction from the end portion of the rear wall 51c in the Z direction. The overhanging wall 51g extends along a direction orthogonal to the Z direction (XY plane).

[0034] The overhanging wall 51d projects in the opposite direction of the X direction from the lower end portion on the opposite side of the Z direction of the front wall 51b. The overhanging wall 51d extends along a direction orthogonal to the Z direction (XY plane).

[0035] The right wall 51e extends along a direction orthogonal to the Y direction (XZ plane). The right wall 51e spans between the end portions on the opposite side of the Y direction of the top wall 51a, the front wall 51b, the rear wall 51c, and the overhanging wall 51d.

[0036] In addition, the holder 51 is provided with an opening 51f surrounded by the top wall 51a, the front wall 51b, the rear wall 51c, and the right wall 51e, and opening in the opposite directions of the X direction and the Z direction. An expansion card 80 is disposed within this opening 51f.

[0037] In addition, a plurality of holes 51a4 and notches 51a5 are provided in the top wall 51a. The plurality of holes 51a4 are arranged at intervals in the X direction between the end 51a1 and the end 51a2. The hole 51g1 penetrates the top wall 51a in the Z direction. The notch 51a5 is provided at the end on the Y-direction side of the top wall 51a and is recessed from the end in the opposite direction of the Y direction.

[0038] The relay substrate 52 is disposed in the opening 51f. The relay substrate 52 is fixed to the surface on the Y-direction side of the right wall 51e by a coupling tool such as a screw. The relay substrate 52 extends in the XZ plane. The relay substrate 52 is also referred to as a riser substrate.

[0039] A second connector 54 is provided at the end on the opposite side in the Z direction of the relay substrate 52. The second connector 54 protrudes from the relay substrate 52 in the opposite direction of the Z direction. The second connector 54 provided with the second connector 54 is a flat male connector. The second connector 54 extends along the direction (XZ plane) orthogonal to the Y direction. The second connector 54 is inserted into the insertion port 15a of the first connector 15 provided on the first substrate 5 and is electrically connected to the first connector 15. The second connector 54 is removed from the first connector 15 by being pulled out from the first connector 15 in the Z direction. That is, the removal direction of the second connector 54 with respect to the first connector 15 is the Z direction. Further, the second connector 54 is attached to the first connector 15 by being inserted into the insertion port 15a of the first connector 15. The attachment direction of the second connector 54 with respect to the first connector 15 is the opposite direction of the Z direction.

[0040] In addition, a plurality (two as an example) of third connectors 55 are provided on the surface 52a of the relay substrate 52 facing the Y direction. In FIG. 3, one third connector 55 is shown. The two third connectors 55 are located in the Z direction and arranged in the Z direction, more in the Z direction than the second connector 54. The third connector 55 is a female connector that opens in the Y direction. The third connector 55 extends in the X direction.

[0041] The connector 80b of the expansion card 80 is detachable from the third connector 55.

[0042] The expansion card 80 has a card body 60 and a connector 80b. An electronic circuit is provided in the card body 60. The connector 80b protrudes from the card body 60. The connector 80b forms part of the electronic circuit. The connector 80b is a flat male connector. The expansion card 80 is, for example, a graphics card, a sound card, a network card, or the like. Note that the expansion card may be other than the above.

[0043] The removal direction of the connector 80b with respect to the third connector 55 is one direction along the thickness direction of the relay substrate 52 (the Y direction in the state of FIG. 3). The attachment direction of the connector 80b with respect to the third connector 55 is the other direction along the thickness direction of the relay substrate 52 (the direction opposite to the Y direction in the state of FIG. 3).

[0044] The air guiding member 53 is located on the side opposite to the Z direction with respect to the overhanging walls 51d and 51g, and protrudes in the Y direction from the surface on the Y direction side of the right wall 51e. The air guiding member 53 is located between the fan 42 and the relay substrate 52. The air guiding member 53 is arranged on the side opposite to the X direction with respect to the relay substrate 52. Further, the air guiding member 53 is arranged at an interval on the X direction side with respect to the fan 42 and is arranged side by side with the fan 42 in the X direction. Also, the air guiding member 53 is arranged on the Z direction side with respect to the upper surface 5a of the first substrate 5. An air flow path 56 (space) is formed between the air guiding member 53 and the upper surface 5a. That is, the air guiding member 53 partitions the inside of the opening 51f of the holder 51 and forms the flow path 56. The flow path 56 faces the right wall 51e. The air guiding member 53 is fixed by a coupling tool such as a screw. The air guiding member 53 is plate-shaped. The air guiding member 53 is also referred to as a wind direction plate or a guide member. The flow path 56 is also referred to as an air guiding path.

[0045] As shown in FIG. 2, the air guiding member 53 has plate portions 53a and 53b. The plate portion 53a is inclined with respect to the X direction and the Z direction so as to face the opposite direction of the Z direction as it goes in the X direction. The end portion on the opposite side of the X direction of the plate portion 53a is connected to the overhanging wall 51d. The plate portion 53b extends in the X direction from the end portion on the X direction side of the plate portion 53a. The plate portion 53b extends in a direction intersecting the Z direction (XY plane). The plate portion 53b is disposed on the Z direction side with respect to the heat sink 16. The plate portion 53b is arranged at a distance from the heat sink 16 in the Z direction.

[0046] The air guiding member 53 guides the air in the accommodation chamber 2g moved by the fan 42 to the heat sink 16. The air passes through the flow path 56 between the air guiding member 53 and the first substrate 5t positioned at a distance on the opposite side of the Z direction of the air guiding member 53. At this time, the plate portion 53a guides the air toward the heat sink 16, and the plate portion 53b guides the air so that the air moves along the heat sink 16. Also, the right wall 51e of the holder guides the air so that the air moves along the heat sink 16. That is, the function of the holder 51 as a wind tunnel is utilized. At this time, the flow path 56 of the air between the plate portion 53a and the first substrate 5 positioned on the opposite side of the X direction with respect to the plate portion 53a becomes smaller in cross section as it goes in the X direction. Thereby, the flow velocity of the air is increased in the process of passing through the passage between the plate portion 53a and the first substrate 5, and the air passes through the heat sink 16 at the increased flow velocity. Therefore, the cooling effect of the heat sink 16 by the air is increased. The arrow F in FIG. 2 indicates the flow direction of the air.

[0047] <Mounting Structure of the Substrate Unit 3> Next, the mounting structure of the substrate unit 3 to the chassis 21 will be described. As shown in FIG. 1, the substrate unit 3 is detachably attached to the chassis 21 by a plurality (four as an example) of first male screw members 61 and a plurality (two as an example) of second male screw members 62.

[0048] The plurality of first male screw members 61 includes two first male screw members 61A that fix the X-direction side portion of the substrate unit 3 to the chassis 21, and two first male screw members 61B that fix the end portion on the opposite side of the X direction of the substrate unit 3 to the chassis 21. The two first male screw members 61A are arranged at intervals in the Y direction. The two first male screw members 61B are located on the opposite side in the X direction with respect to the two first male screw members 61A and are arranged at intervals in the Y direction. Further, the second male screw member 62 fixes the X-direction side portion of the substrate unit 3 to the chassis 21. The two second male screw members 62 are located in the opposite direction in the Z direction than the first male screw members 61 and are arranged at intervals in the Y direction.

[0049] FIG. 4 is an exemplary perspective view of a part of the mounting structure of the substrate unit 3 of the electronic device 1 according to the first embodiment. Specifically, FIG. 4 shows the upper part of the corner between the rear wall 2e and the left wall 2d in the chassis 21.

[0050] As shown in FIG. 4, the chassis 21 has a fixing portion 21a. The fixing portion 21a projects in the X direction from the Z-direction side end of the rear wall 2e. The fixing portion 21a is configured in a strip shape with the Z direction as the thickness direction and the Y direction as the longitudinal direction. The fixing portion 21a is an example of the first fixing portion.

[0051] A first female screw portion 63A having the Z direction as the axial direction is provided in the fixing portion 21a. The first female screw portion 63A is provided so as to penetrate the fixing portion 21a.

[0052] Further, a hole 2e1 (second hole) penetrating the rear wall 2e in the X direction is provided in the rear wall 2e. The hole 2e1 is an example of the second hole.

[0053] Further, a hole 51g1 is provided in the overhanging wall 51g of the substrate unit 3. For example, two holes 51g1 are provided at intervals in the Y direction. In FIG. 4, only one hole 51g1 is shown. The hole 51g1 penetrates the overhanging wall 51g in the Z direction. The hole 51g1 is an example of the first hole, and the overhanging wall 51g is an example of the first fixed portion.

[0054] The first male screw member 61A has a first head 61a and a first male screw portion 61b. The first male screw portion 61b extends from the first head 61a in the opposite direction of the Z direction. The first male screw portion 61b extends from the first head 61a in the opposite direction of the Z direction.

[0055] The second male screw member 62 has a second head 62a and a second male screw portion 62b. The second male screw portion 62b extends from the second head 62a in the opposite direction of the X direction.

[0056] FIG. 5 is an exemplary cross-sectional view of a part of the mounting structure of the substrate unit of the electronic device 11 according to the first embodiment. As shown in FIG. 5, the top wall 51a of the substrate unit 3 is overlapped with the fixing portion 21a of the chassis 21 on the Z direction side, and the hole 51g1 of the top wall 51a and the first female screw portion 63A of the fixing portion 21a are aligned in the Z direction. The first head 61a of the first male screw member 61A is overlapped with the top wall 51a of the substrate unit 3 on the Z direction side. The first male screw portion 61b of the first male screw member 61A is inserted into the hole 51g1 and coupled to the first female screw portion 63A. The first male screw member 61A that couples the chassis 21 and the substrate unit 3 in this way is detachable from the chassis 21 in the Z direction.

[0057] FIG. 6 is an exemplary cross-sectional view of a part of the mounting structure of the substrate unit 3 of the electronic device 1 according to the first embodiment. As shown in FIG. 6, the rear wall 51c of the substrate unit 3 is overlapped with the rear wall 2e of the chassis 21 on the side opposite to the X direction. A second female screw portion 64 is provided on the rear wall 51c of the substrate unit 3. The second female screw portion 64 penetrates the rear wall 51c. The second head 62a of the second male screw member 62 is overlapped with the rear wall 2e on the X direction side. The second male screw portion 62b of the second male screw member 62 is inserted into the hole 2e1 and coupled to the second female screw portion 64. The second male screw member 62 that couples the chassis 21 and the substrate unit 3 in this way is removable in the X direction.

[0058] FIG. 7 is an exemplary exploded perspective view of a part of the mounting structure of the substrate unit 3 of the electronic device 1 according to the first embodiment. As shown in FIG. 7, the chassis 21 has a fixing portion 21b. The fixing portion 21b projects in the X direction from the rear wall 41b of the fan holder 41. The fixing portion 21b is configured in a plate shape with the Z direction as the thickness direction. The fixing portion 21b is an example of the first fixing portion.

[0059] A first female screw portion 63B having the Z direction as the axial direction is provided in the fixing portion 21b. The first female screw portion 63 is provided so as to penetrate the fixing portion 21a. Hereinafter, the first female screw portion 63 is used as a general term for the first female screw portion 63A and the first female screw portion 63B.

[0060] A hole 51d1 is provided in the protruding wall 51d of the substrate unit 3. As an example, two holes 51d1 are provided at intervals in the Y direction. In FIG. 7, only one hole 51d1 is shown. The hole 51d1 penetrates the protruding wall 51d in the Z direction. The hole 51d1 is an example of the first hole, and the protruding wall 51d is an example of the first fixed portion.

[0061] The first male screw member 61B has the same configuration as the first male screw member 61A. That is, the first male screw member 61B has a first head 61a and a first male screw portion 61b. The first male screw portion 61b extends in the direction opposite to the Z direction from the first head 61a.

[0062] The overhanging wall 51d of the substrate unit 3 is overlapped with the fixing portion 21b of the chassis 21 on the Z-direction side, and the hole 51d1 of the overhanging wall 51d and the first female screw portion 63B of the fixing portion 21b are aligned in the Z direction. The first head 61a of the first male screw member 61B is overlapped with the overhanging wall 51d of the substrate unit 3 on the Z-direction side. The first male screw portion 61b of the first male screw member 61B is inserted into the hole 51d1 and is coupled to the first female screw portion 63B. The first male screw member 61B that couples the chassis 21 and the substrate unit 3 in this way is removable in the Z direction with respect to the chassis 21.

[0063] In the electronic device 1 having the above configuration, as shown in FIG. 1, with the cover 22 removed from the chassis 21 and the accommodation chamber 2g opened in the Z direction, the substrate unit 3 is exposed to the outside of the chassis 21, and the substrate unit 3 is removable in the Z direction with respect to the chassis 21.

[0064] As described above, in this embodiment, the electronic device 1 includes a chassis 21, a cover 22, a fan 42, a first substrate 5, a first connector 15, and a substrate unit 3. The chassis 21 is provided with a housing chamber 2g that opens in the Z direction (the first direction). The cover 22 is located on the side opposite to the bottom wall 2a with respect to the housing chamber 2g and covers the housing chamber 2g. The cover 22 is detachable from the chassis 21. The fan 42 is housed in the housing chamber 2g and fixed to the chassis 21. The first substrate 5 is housed in the housing chamber 2g and fixed to the chassis 21. The first connector 15 is provided on the first substrate 5. The first connector 15 is provided with an insertion port 15a that opens in the first direction. The substrate unit 3 includes a holder 51, an intermediate substrate 52, a second connector 54, a third connector 55, and a ventilation member 53, and is detachable from the chassis 21. The intermediate substrate 52 is supported by the holder 51. The second connector 54 protrudes from the intermediate substrate 52 in the direction opposite to the first direction. The third connector 55 is located in the Z direction with respect to the second connector 54. The second connector 54 is inserted into the insertion port 15a. The connector 80b of the expansion card 80 can be connected to the third connector 55. The ventilation member 53 is located between the fan 42 and the intermediate substrate 52, and guides the air in the housing chamber 2g moved by the fan 42 to the object. With the cover 22 removed from the chassis 21, the substrate unit 3 is removable from the chassis 21 in the Z direction.

[0065] According to such a configuration, when making a design change according to the object to be cooled by the fan 42, a plurality of different types of substrate units 3 corresponding to the object to be cooled by the fan 42 are prepared with the ventilation member 53, and the substrate unit 3 can be replaced. That is, by changing only the substrate unit 3, a design change can be made according to the object to be cooled by the fan 42. Therefore, a design change according to the object to be cooled by the fan 42 can be made with a small number of element changes. As a result, it is possible to respond to the diversification of user requirements for the specifications of the electronic device 1 with a small number of types of components (resources).

[0066] Further, the electronic device 1 includes a first male screw member 61 and a second male screw member 62. The chassis 21 has a bottom wall 2a with the Z direction as the thickness direction, and a rear wall 2e (side wall) that extends from the bottom wall 2a in the Z direction after extending in the X direction that is orthogonal to the Z direction and faces outward from the accommodation chamber 2g with the X direction as the thickness direction, and plate-shaped fixing portions 21a, 21b (first fixing portions) that are located in the Z direction relative to the bottom wall 2a and have the Z direction as the thickness direction. A first female screw portion 63 with the Z direction as the axial direction is provided in the fixing portions 21a, 21b. A hole 2e1 (second hole) that penetrates the rear wall 2e in the X direction is provided in the rear wall 2e. The substrate unit 3 is provided on the holder 51, overlapped on the fixing portions 21a, 21b on the Z direction side, and has plate-shaped overhanging walls 51d, 51g (first fixed portions) with the Z direction as the thickness direction, and a plate-shaped rear wall 51c (second fixed portion) that is provided on the holder 51 and overlapped on the opposite side of the rear wall 2e in the X direction with the X direction as the thickness direction. Holes 51d1, 51g1 (first holes) that are located on the Z direction side with respect to the first female screw portion 63 and penetrate the overhanging walls 51d, 51g in the Z direction are provided in the overhanging walls 51d, 51g. A second female screw portion 64 with the X direction as the axial direction is provided in the rear wall 51c and is located on the opposite side of the hole 2e1 in the X direction. The first male screw member 61 has a first head 61a that is overlapped on the overhanging walls 51d, 51g on the Z direction side, and a first male screw portion 61b that extends from the first head 61a in the opposite direction of the Z direction, is inserted into the holes 51d1, 51g1, and is coupled to the first female screw portion 63. The first male screw member 61 is removable in the Z direction with the cover 22 removed from the chassis 21. The second male screw member 62 has a second head 62a that is overlapped on the rear wall 2e on the X direction side, and a second male screw portion 62b that extends from the second head 62a in the opposite direction of the X direction, is inserted into the hole 2e1, and is coupled to the second female screw portion 64. The second male screw member 62 is removable in the X direction.

[0067] According to such a configuration, since the substrate unit 3 is fixed to the chassis 21 by the first male screw member 61 and the second male screw member 62, the substrate unit 3 can be more firmly fixed to the chassis 21 than in a configuration where the substrate unit 3 is fixed to the chassis 21 by only one of the first male screw member 61 and the second male screw member 62.

[0068] Further, the electronic device 1 includes a fan 42. The fan 42 is housed in the housing chamber 2g and fixed to the chassis 21. The substrate unit 3 has an air guiding member 53. The air guiding member 53 is fixed to the holder 51 and guides the air in the housing chamber 2g moved by the fan 42 to the object.

[0069] According to such a configuration, since the air guiding member 53 can guide the air in the housing chamber 2g moved by the fan 42 to the object, the object can be cooled.

[0070] The electronic device 1 further includes a CPU 14 (processor) provided on the upper surface 5a and a heat sink 16 located on the Z-direction side with respect to the CPU 14 and stacked on the CPU 14. The object is the heat sink 16.

[0071] According to such a configuration, the CPU 14 can be cooled via the heat sink 16 by the air in the housing chamber 2g moved by the fan 42.

[0072] <Second Embodiment> FIG. 8 is an exemplary cross-sectional view of the electronic device 1 according to the second embodiment. The present embodiment shown in FIG. 8 is mainly different from the first embodiment in that a substrate unit 103 is provided instead of the substrate unit 3 in the first embodiment. In the present embodiment, the CPU 14 and the heat sink 16 are not provided. However, a CPU (not shown) different from the CPU 14 is provided in the same manner as in the first embodiment.

[0073] FIG. 9 is an exemplary perspective view of a substrate unit 103 of the electronic device 1 according to the second embodiment. As shown in FIG. 9, the substrate unit 3A has a holder 51 and a relay substrate 52, similar to the substrate unit 3. However, the substrate unit 3A has an air guiding member 153 instead of the air guiding member 53.

[0074] The air guiding member 153 is located on the opposite side in the Z direction with respect to the overhanging walls 51d and 51g, and protrudes in the Y direction from the surface on the Y direction side of the right wall 51e. The air guiding member 153 is located between the fan 42 and the relay substrate 52. The air guiding member 153 is disposed on the opposite side in the X direction with respect to the relay substrate 52. Further, the air guiding member 153 is spaced apart in the X direction from the fan 42 and is arranged side by side with the fan 42 in the X direction. An air flow path 156 (space) is formed between the air guiding member 153 and the top wall 51a of the holder 51. That is, the air guiding member 153 partitions the inside of the opening 51f of the holder 51 to form the flow path 156. The flow path 156 faces the right wall 51e. The air guiding member 153 is fixed by a coupling tool such as a screw. The air guiding member 153 is plate-shaped.

[0075] The air guiding member 153 has plate portions 153a, 153b, and 153c. The plate portion 153a is inclined with respect to the X direction and the Z direction so as to go in the Z direction as it goes in the X direction. The plate portion 153b extends in the X direction from the end portion on the X direction side of the plate portion 53a. The plate portion 153b spreads in a direction (XY plane) intersecting the Z direction. The plate portion 153c extends in the X direction from the end portion on the X direction side of the plate portion 53a. The plate portion 153c is inclined with respect to the X direction and the Z direction so as to go in the Z direction as it goes in the X direction.

[0076] As shown in FIG. 8, the air guiding member 53 guides the air in the accommodation chamber 2g moved by the fan 42 to the expansion card 80 to which the connector 80b is connected to the third connector 55. The air passes through the flow path 56 between the air guiding member 53 and the top wall 51a spaced apart from the air guiding member 53 in the Z direction. The air guiding member 53 guides the air to the air inlet 80c provided on the lower wall of the card body 80a of the expansion card 80. The arrow F in FIG. 8 indicates the air flow direction. The expansion card 80 is an example of the object.

[0077] Note that the mounting structure of the substrate unit 3A to the chassis 21 is the same as the mounting structure of the substrate unit 3 to the chassis 21.

[0078] As described above, in this embodiment, the object is the expansion card 80 to which the connector 80b is connected to the third connector 55.

[0079] According to such a configuration, the expansion card 80 can be cooled by the air in the accommodation chamber 2g moved by the fan 42.

[0080] As described above, several embodiments of the present invention have been described. However, this embodiment is presented as an example and is not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the invention described in the claims and its equivalent scope.

Explanation of Reference Numerals

[0081] 1... Electronic device 2... Housing 2a... Bottom wall 2e... Rear wall (side wall) 2e1... Hole (second hole) 2g... Accommodation chamber 3, 103... Substrate unit 5... First substrate 14... CPU (processor) 15…The first connector 15a…Insertion port 16…Heat sink (object) 21…Chassis 21a, 21b…Fixing part (the first fixing part) 22…Cover 42…Fan 51…Holder 51c…Rear wall (the second fixed part) 51d, 51g…Overhanging wall (the first fixed part) 51d1, 51g1…Hole (the first hole) 52…Relay board 53, 153…Air guiding member 54…The second connector 55…The third connector 61, 61A, 61B…The first male screw member 61a…The first head 61b…The first male screw part 62…The second male screw member 62a…The second head 62b…The second male screw part 63…The first female screw part 64…The second female screw part 80…Expansion card (object) 80b…Connector

Claims

1. A chassis provided with a housing chamber that opens in a first direction, A cover that is located on the first direction side with respect to the housing chamber and covers the housing chamber, and is detachable from the chassis, A fan housed in the housing chamber and fixed to the chassis, A first substrate housed in the housing chamber and fixed to the chassis, An insertion port that opens in the first direction, and a first connector provided on the first substrate, A holder, a relay substrate supported by the holder, a second connector protruding from the relay substrate in the direction opposite to the first direction, a third connector provided on the relay substrate and located in the first direction with respect to the second connector, and a wind guiding member supported by the holder, and a substrate unit that is detachable from the chassis, Comprising The second connector is inserted into the insertion port, An expansion card connector can be connected to the third connector, The wind guiding member is located between the fan and the relay substrate, and guides the air in the housing chamber moved by the fan to an object, In a state where the cover is removed from the chassis, the substrate unit is detachable from the chassis in the first direction, An electronic device.

2. A first male screw member, A second male screw member, Comprising The chassis has a bottom wall with the first direction as the thickness direction, a side wall that is orthogonal to the first direction and has the second direction from the housing chamber to the outside of the housing chamber as the thickness direction and extends in the first direction from the bottom wall, and a plate-shaped first fixing portion that is located in the first direction with respect to the bottom wall and has the first direction as the thickness direction, A first female screw portion having the first direction as the axial direction is provided in the first fixing portion, A second hole that penetrates the side wall in the second direction is provided in the side wall, The substrate unit has a first fixed portion that is provided on the holder, overlapped on the first direction side of the first fixed portion, and has the first direction as the thickness direction, and a second fixed portion that is provided on the holder, overlapped on the opposite side of the side wall in the second direction, and has the second direction as the thickness direction, A first hole that is located on the first direction side with respect to the first female screw portion and penetrates the first fixed portion in the first direction is provided in the first fixed portion, In the second fixed part, a second female screw part is provided on the side opposite to the second direction with respect to the second hole, and the second direction is the axial direction. The first male screw member has a first head overlapped on the first direction side with respect to the first fixed part, and a first male screw part extending from the first head in the opposite direction of the first direction and inserted into the first hole and coupled to the first female screw part. The first male screw member is removable in the first direction with the cover removed from the chassis. The second male screw member has a second head overlapped on the second direction side with respect to the side wall, and a second male screw part extending from the second head in the opposite direction of the second direction and inserted into the second hole and coupled to the second female screw part. The second male screw member is removable in the second direction. The electronic device according to claim 1.

3. A processor provided on the first substrate; A heat sink located on the first direction side with respect to the processor and overlapped with the processor; Comprising: The object is the heat sink. The electronic device according to claim 1 or 2.

4. The object is the expansion card with the connector connected to the third connector. The electronic device according to claim 1 or 2.

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