JPH10256765A - Electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an electronic apparatus having high reliability, without air leaks by preventing air leak-blocking members from peeling off or being damaged. SOLUTION: This apparatus has a duct 32 having an air hole 32a, an electronic circuit module having an air duct 37 which has a hole 37a coupled with the duct 32 for feeding cooling air through the hole 32a, leak-blocking member 3 for blocking air from leaking from the coupling of the holes 32a and 37a and comprises a part 4, pressed to the duct 32 surface around the hole 32a and duct 37 surface around the hole 37a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic apparatus for cooling an electronic component through a heat radiating member provided in the duct, for example, by sending air into the duct.

[0002]

2. Description of the Related Art FIG.
FIG. 13 is an explanatory view showing a conventional electronic apparatus disclosed in Japanese Patent Application Publication No. 3 (Kokai) No. 3; FIG. 13 is a cross-sectional view taken along a line AA shown in FIG. 12; 12 and 13
, 30 is the electronic device, 31 is the electronic device 3
Reference numeral 32 denotes an intake duct provided in the electronic device 30, reference numeral 33 denotes an exhaust duct provided in the electronic device 30, reference numeral 34 denotes a storage portion provided in the electronic device 30, and It is formed between the exhaust duct 33. Reference numeral 35 denotes a guide block, which comprises an elliptical through-hole and a guide portion provided upright around the through-hole. A guide block 35 is also provided on the exhaust duct 33 side. Reference numeral 36 denotes an electronic circuit module, and 37 denotes a ventilation duct provided in the electronic device module 36, through which cooling air flows. 38 is a radiating fin provided in the ventilation duct 37, 39 is an electronic component part of the electronic device module 36,
Reference numeral 40 denotes a connector section of the electronic device module. FIG.
In the figure, 32a is a ventilation port, which is formed by providing an elliptical through hole in the wall surface of the intake duct 32. The exhaust duct 33 is also provided with a ventilation port. Reference numeral 35a denotes an elliptical through hole provided in the guide block 35, and the shape of the through hole 35a is the same as that of the ventilation port 32a. 37a is a ventilation opening of the ventilation duct 37, 37b is a slide surface provided at an end of the ventilation duct 37, 41 is a seal rubber which is an air leakage prevention member, and has a projection 41a protruding inward of the guide block 35a. It is provided around the inner wall of the guide portion of the guide block 35 with an adhesive or the like. The protrusion 41a of the seal rubber 41 and the slide surface 37b are in close contact with each other to prevent air leakage between the intake duct 32 and the ventilation duct 37.

FIG. 15 is an explanatory view showing a guide block as viewed from an arrow V shown in FIG. In FIG.
The same reference numerals as those shown in FIG. 14 to FIG. Reference numeral 41b denotes a projection made of the same material as the seal rubber 41 provided on the seal rubber 41. FIG.
FIG. 16 is an explanatory diagram showing an engagement state between the protrusion 41b and the ventilation duct 37 shown in FIG. 16, the same reference numerals as those in FIGS. 12 to 15 denote the same or corresponding parts, and a description thereof will be omitted. Reference numeral 37c denotes a seal cap portion provided at the end of the ventilation duct 37, which is in close contact with the projection 41b from above.

Next, the operation will be described with reference to FIGS. First, the electronic device module 36 is mounted on the housing 31. The electronic device module 36 is inserted into the storage section 34 such that the ventilation port 32a and the ventilation port 37a match. At this time, the slide surface portion 37b of the ventilation duct 37 is inserted into the seal rubber 41 while deforming the protrusion 41a of the seal rubber 41 and in close contact with the protrusion 41a. When the electronic device module 36 is sufficiently inserted, the seal cap portion 37c deforms the protrusion 41c and comes into close contact with the protrusion 41c. Therefore, the slide surface portion 37
Due to the close contact between the protrusion b and the protrusion 41a and the close contact between the seal cap portion 37c and the protrusion 41c, air leakage is prevented, and a housing-side connector portion (not shown) provided on the bottom surfaces of the connector portion 40 and the housing portion. ) Are engaged with each other to make an electrical connection. Next, a method for cooling the electronic device 30 will be described. Cooling air taken into the electronic device 30 from the outside is sent from the intake duct 32 into the ventilation duct 37 provided with the radiation fin 38 through the ventilation port 32a and the ventilation port 37a. The cooling air indirectly cools the heat generated by the electronic components mounted on the electronic component section 39 of the electronic device module 36. Cooling air is vented duct 3
The air is exhausted to the exhaust duct 33 through the air vent 37a on the exhaust side 7 and finally exhausted to the outside of the electronic apparatus 30.

[0005]

A conventional electronic device 3
0 is configured as described above, and when the electronic device module 36 is mounted, the slide surface portion 37b deforms the protrusion 41a of the seal rubber 41.
There is a problem in that large friction occurs between the protrusion 7a and the protrusion 41a, the seal rubber 41 is peeled off from the inner wall of the guide block 35a, or the protrusion 41a is damaged, and cooling air leaks from that portion. .

SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. When an electronic device module is mounted, a leakage prevention member for preventing air leakage can be removed.
It is an object of the present invention to provide a highly reliable electronic device that is prevented from being damaged and has no risk of air leakage.

[0007]

According to the present invention, there is provided an electronic apparatus including a duct having a ventilation opening for passing cooling air,
An electronic circuit module provided with a ventilation duct having a ventilation hole that engages with the duct and vents the cooling air through the ventilation hole, and air leakage from an engagement portion between the ventilation hole and the ventilation hole. An electronic device comprising: a leakage prevention member for preventing leakage; and a pressing portion for pressing the leakage prevention member against the surface of the duct around the ventilation hole and the surface of the ventilation duct around the ventilation hole. is there.

[0008] Further, an electronic apparatus according to the following invention is provided.
The leak prevention member is a first leak prevention member provided around the ventilation hole side of the engagement portion between the ventilation hole and the ventilation hole, and a second leakage protection member provided around the ventilation hole side of the engagement portion. A pressing portion provided between the first leak preventing member and the second leak preventing member to press the first leak preventing member against a duct surface around the ventilation opening; And pressing the second leak prevention member against the surface of the ventilation duct around the ventilation port.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. An embodiment of an electronic apparatus according to the present invention will be described. FIG. 1 is an overall view showing an electronic apparatus according to a first embodiment, FIG. 2 is a cross-sectional view taken along line AA shown in FIG. 1, and FIG. 3 is an enlarged view of a portion B shown in FIG. FIG. 4 is an explanatory diagram showing the pressing portion viewed from the arrow V1 shown in FIG.
1 to 4, the same reference numerals as those in FIGS. 13 to 16 denote the same or corresponding parts, and a description thereof will be omitted. 1 and 2, reference numeral 1 denotes an electronic apparatus. In FIG. 3, C is a contact portion on the side of the intake duct 32 to which the leak prevention member (described later) adheres, and the ventilation duct 32 around the ventilation port 32 a.
Formed. D is a contact portion on the side of the ventilation duct 37 to which the leak prevention member is in close contact, and is formed in the ventilation duct 37 around the ventilation port 37a. Reference numeral 2 denotes a holder, and a ventilation port 32
Each of the plate pieces protrudes into the storage portion 34 from both sides and is bent by 90 degrees to the ventilation opening 32a side after protruding by a predetermined amount, and the tip ends thereof are provided closer to each other than the protruding starting positions. Reference numeral 3 denotes an O-ring which is a leak prevention member, and 4 denotes a pressing portion, and a holding portion 4a for holding the O-ring 3 and a pressed portion 4b.
When the pressed portion 4b is pressed by the holder 6, the O-ring 3 is pressed against the contact portions C and D to come into close contact therewith. The pressing portion 4 is provided around the ventilation duct 37 as shown in FIG. Reference numeral 5 denotes a support rod for supporting the pressing portion 4, which is inserted into a pipe portion 37 a penetrating the ventilation duct 37 and has a loose-fit pipe diameter, and moves the pressing portion 4 within the range of the loose fit. It is possible. Reference numeral 6 denotes a holder, which presses the pressed portion 4b to hold the pressed portion. The holder 2, the O-ring 3, the pressing part 4, the support bar 5, the holder 6, and the pipe 37b are similarly provided on the exhaust duct 33 side. In addition, the electronic device 1 has a configuration denoted by reference numerals 2 to 6 and the above-described housing 31, the intake duct 32, the exhaust duct 33, and the storage unit 3.
4, electronic circuit module 36, ventilation duct 37, radiating fins 38, electronic component 39, and connector 40. Note that the engagement portion between the ventilation port 32a and the ventilation port 37a in the electronic device according to the first embodiment is
It is a portion where the ventilation port 32a including the contact portions C and D and the ventilation port 37a face each other.

FIG. 5 is a detailed explanatory view of the holder 6. FIG.
5A is an overall perspective view showing the holder 6, FIG. 5B is an exploded view of the holder 6, FIG. 5C is a side view showing a state before the holding operation of the holder 6, and FIG. It is a side view which shows the holding | maintenance operation | movement of the holding tool 6. In FIG. 5, reference numeral 6a denotes a bolt portion, and 6b denotes a quadrangular prism-shaped first edge portion. A through hole is provided for inserting the bolt portion 6a by fitting it to the outer diameter thereof, and a surface on which the through hole is provided is provided. One surface is provided with a taper 6b1. Reference numeral 6c denotes a quadrangular prism-shaped second edge portion, which is provided with a through hole through which the bolt portion 6a is fitted to fit the outer diameter thereof, and one of the surfaces provided with the through holes has a direction opposite to the taper 6b1. Tapered 6c1
And a nut 6c2 to be screwed with the screw of the bolt portion 6a is provided on the other surface. Reference numeral 6d denotes a square pillar-shaped pressing piece tapered at both ends, a through hole for loosely inserting the bolt portion 6a, and a taper 6d1 engaging the taper 6b1 on one surface provided with the through hole, and the other. Is provided with a taper 6d2 that engages with the taper 6c1, and is disposed between the first edge portion 6b and the second edge portion 6c. As shown in FIG. 5 (c), before the holding operation, the first edge portion 6b, the second edge portion 6c, and the pressing piece 6d of the holder 6 have substantially the same front and side surfaces. I have. When the bolt head of the bolt portion 6a is turned in the direction in which the screw is tightened from this state, the screw of the bolt portion 6a is screwed into the nut 6c2 of the second edge portion 6c.
The first edge portion 6b moves on the surface of the taper 6d1, and the second
Edge portion 6c moves on the surface of taper 6d2, and the second
5d moves to the first edge 6b side, and as shown in FIG. 5D, the pressing piece 6d is loosened by the first piece 6b and the second piece 6c. Extruded by

Next, the operation will be described with reference to FIGS.
First, the electronic device module 36 is inserted into the storage portion 34 such that the pressed portion 4b of the pressing portion 4 enters the space formed by the holder 2 and the ventilation duct 32, and the ventilation port 32a
The connector part 40 is fitted to a connector (not shown) provided in the storage part 34. At this time, since the pressing portion 4 is not pressed by the holder 6, it is supported by the support bar 5 in a floating state and can be easily moved. Therefore, a large frictional force does not occur between the O-ring 3 and the contact portions C and D. Next, when the pressing piece 6d is pushed out by the first edge portion 6b and the second edge portion 6c, the holder 6 and the holder portion 2 are pressed so that the pressing piece 6d presses the pressed portion 4b. 4b. When the bolt head of the bolt 6a of the holder 6 is turned in the direction in which the screw is tightened, the holder 6 changes from the state shown in FIG. 5C to the state shown in FIG. The pressing piece 6d that engages with the second edge portion 6c via a taper is pushed out to press the pressed portion 4b between the holder portion 2 and the intake duct 32 side. Therefore, the O-ring 3 can be brought into close contact with the contact portions C and D without being damaged.

The pressing means may be formed by using an elastic member such as a leaf spring or a coil spring instead of the holder 6.
FIG. 6 is an explanatory view showing a pressing portion using a leaf spring, and FIG.
It is explanatory drawing which shows the press part from arrow V2 shown in FIG. 6 and 7, the same reference numerals as those in FIGS. 1 to 5 denote the same or corresponding parts, and a description thereof will be omitted. 7 is a leaf spring part,
As shown in FIG. 7, it is constituted by a spring portion 7a formed in a wavy shape and a support portion 7b for fixing both ends of the spring portion 7a with screws or the like. As described above, when the leaf spring portion 7 is used,
First, the electronic device module 36 (shown in FIG. 1) is inserted into the storage portion 34 so that the pressed portion 4b of the pressing portion 4 enters the space formed by the holder portion 2 and the ventilation duct, and the ventilation port 32a is opened. The connector part 40 is fitted to a connector (not shown) provided in the storage part 34 while aligning with the ventilation port 37a. Next, the leaf spring portion 7 is attached to the holder portion 2 and the pressed portion 4b so that the wavy spring portion 7a faces the intake duct 32 side.
Insert between The spring part 7a of the leaf spring part 7 is
b, it is prevented from being greatly deformed in the insertion direction, and the elastic force presses the pressed portion 4b toward the intake duct 32 side, so that the O-ring 3 is not damaged and adheres to the contact portions C, D. Can be in close contact. in this case,
The structure of the member that presses the pressed portion 4b is simplified, and the work is also easy because the leaf spring portion 7 only needs to be inserted.

Note that a screw or the like may be used instead of the holder 6. FIG. 8 is an explanatory view showing a pressing portion using a screw. 8, the same reference numerals as those in FIGS. 1 to 7 denote the same or corresponding parts, and a description thereof will be omitted. Reference numeral 8 denotes a screw for pressing the pressed portion 4b toward the intake duct 32. As shown in FIG. 8, the O-ring 3 is broken by screwing the pressed portion 4 b with a female screw provided on the wall surface of the intake duct 32 and pressing the head toward the intake duct 32 side. It can be brought into close contact with the contact portions C and D without any problem.

The leak prevention member need not be the O-ring 3 but may be any member that can elastically deform to prevent air leakage. For example, an annular packing or an annular hollow packing may be used.

Although the pressing portion 4 is separate from the ventilation duct 37, the pressing portion 4 may be integrated with the ventilation duct. FIG. 9 is an explanatory view showing a ventilation duct integrally formed with a pressing portion. 9, the same reference numerals as those in FIGS. 1 to 8 denote the same or corresponding parts, and a description thereof will be omitted. In FIG. 9, 9
Is a flow path branching part, and the wall surface of the intake duct 32 is
4 and provided in the shape of a prism. A ventilation port 9a is provided on one surface of the flow path branching portion. Reference numeral 10 denotes a holder, which is provided by projecting a plate piece from the wall surface of the intake duct 32 into the storage portion 34. Reference numeral 11 denotes a pressing portion integrally formed at an end of the ventilation duct 37, and a holding portion 11 for holding the O-ring 3 around the ventilation opening 11a and the ventilation opening 11a.
b and a part 11c to be pressed is provided on the back surface of a part of the holding part 11b.

Next, the operation will be described with reference to FIG. An electronic device module 36 (shown in FIG. 1) is inserted into the storage section 34,
The ventilation port 9a and the ventilation port 11a are aligned, and the connector section 40 (shown in FIG. 1) is fitted to a connector (not shown) provided in the storage section 34, and the electronic device module 36 is mounted. At this time, since the pressing portion 11 is not pressed by the holder 6, a large frictional force does not occur between the O-ring 3 and the contact portions C and D. Next, the holder 6 is attached to the holder 1 such that the taper of the first edge 6a faces the flow path branch 9 side.
0 and the pressed portion 11c. And the holder 6
Turn the bolt head of the bolt part 6c. As a result, when the second edge 6b (shown in FIG. 5) moves toward the first edge 6a, the first edge 6a and the second edge 6a move.
b, since the pressing piece 6c (shown in FIG. 5) is engaged by a taper, the pressing piece 6c is pushed out and presses the pressed portion 11c toward the flow path branching portion 9 side. Therefore, the O-ring 3 can be brought into close contact with the contact portions C and D without being damaged.

It should be noted that cooling air may flow from one flow path branching section 9 to two electronic device modules 36. FIG. 10 is an explanatory view showing another example of attachment of the ventilation duct shown in FIG. 10, the same reference numerals as those in FIGS. 1 to 9 denote the same or corresponding parts, and a description thereof will be omitted. FIG.
At 0, reference numeral 12 denotes a passage branching portion, and the intake duct 32
Are provided in the storage portion 34 so as to protrude into a prism shape. This passage branch portion has a ventilation port 12a and a ventilation port 12b.
Are provided. Numeral 10 denotes holder portions, each of which is provided with a plate piece protruding from the wall surface of the intake duct 32 into the storage portion 34. Reference numeral 13 denotes a pressing portion integrally formed at an end of the ventilation duct 37, a ventilation hole 13a, a holding portion 13b for holding the O-ring 3 around the ventilation hole 13a, and a holding portion 13b.
A pressed portion 13c is provided on a part of the back surface of the portion b.
The pressing portion 13 and the pressing portion 11 are provided in ventilation ducts 37 provided in different electronic device modules 36, respectively. The pressing portion 13 is obtained by reversing the direction of a vent or the like with respect to the pressing portion 11. The operation is the same as that in the case where the above-described flow path branching portion 9 and the pressing portion 11 are used, and thus the description is omitted.

As described above, according to the electronic device 1 according to the first embodiment, the electronic device module 36
Is inserted into the storage section 34 and the ventilation port 32a and the ventilation port 37a are aligned, and then the O-ring 3 is brought into close contact with the contact section C by pressing means formed by the holder 2, the pressing section 4, the support rod 5, and the holder 6. , D, the electronic device module 36
When the O-ring 3 is mounted, a large frictional force does not occur between the O-ring 3 and the contact portions C and D, so that the O-ring 3 can be prevented from being damaged. Therefore, it is possible to obtain a highly reliable electronic device which is free from air leakage.

Further, by replacing the holder 6 of the pressing means with the leaf spring 7, the O-ring 3 can be brought into close contact with the contact portions C and D with a simpler structure.

Further, by replacing the holding member 6 of the pressing means with the screw 8, the O-ring 3 can be connected to the contact portion C with a simpler structure.
D.

Further, by forming the pressing portion 4 and the ventilation duct 37 integrally, the O-ring 3 can be brought into close contact with the contact portions C and D with a simpler structure.

Embodiment 2 FIG. Another embodiment of the electronic apparatus of the present invention will be described. FIG. 11 is an explanatory view showing a leakage prevention structure of an electronic apparatus according to a second embodiment. 11, the same reference numerals as those in FIGS. 1 to 10 denote the same or corresponding parts, and a description thereof will be omitted. In FIG. 11, 1
Reference numeral 4 denotes a flow path branching portion, which is provided on the storage portion 34 side shown in FIG. Reference numeral 14a denotes a ventilation port provided in the flow path branching portion 14, and 37d denotes a narrow end of the ventilation duct 37, which is incorporated in the ventilation port 14a.
Note that the outer peripheral shape of the ventilation port 14a of the flow path branching portion 14 is the same as the outer peripheral shape of the ventilation port 37a of the ventilation duct 37 and is elliptical. C is a contact portion on the side of the intake duct 32 that contacts the O-ring 3, and is formed on the outer peripheral surface of the flow path branch portion 14. D is a contact portion on the side of the ventilation duct 37 that adheres to the other O-ring 3, and is formed on the outer peripheral surface of the ventilation duct 37. Reference numeral 15 denotes an annular pressing portion provided around the outside of the ventilation duct 37, and a holding portion 15 for holding the O-rings 3 one by one.
a and b are provided. This pressing part is a ventilation duct 37
Before the electronic device module 36 (shown in FIG. 1) is inserted into the storage portion 34, the holding portion 1 is provided.
The O-rings 3 held at 5 a and 5 b are closed while being pressed against the outer periphery of the ventilation duct 37, and both O-rings 3 are brought into close contact with the outer periphery of the ventilation duct 37. In the second embodiment, a pressing unit is formed by the pressing unit 15. It should be noted that a branch channel section 14 and a pressing section 15 are also provided on the exhaust duct 33 side. Next, the operation will be described with reference to FIG. First, the electronic device module 36 is inserted into the storage section 34, and the narrow neck end 37d is incorporated into the ventilation port 14a.
4a and the vent 15a, and the connector 40
(Shown in FIG. 1) is fitted to a connector (not shown) provided in the storage portion 34. At this time, the O-ring 3 is
, The O-ring 3 does not slide on the contact portions C and D, and no large frictional force is generated between the O-ring 3 and the contact portions C and D. Next, when the pressing portion 15 is moved to the flow channel branching portion 14 side, the O-ring 3 held by the holding portion 15a comes into close contact with the contact portion C on the branch flow channel 14 side, and the holding portion 15b
O-ring 3 held in close contact with the contact portion D on the ventilation duct 37 side. Thereby, the O-ring 3 is brought into close contact with the contact portions C and D without being damaged, and the ventilation port 14a and the ventilation port 37a
The air leakage of the engaging portion can be prevented.

As described above, according to the pressing means according to the second embodiment, after the ventilation opening 15a and the ventilation opening 37a are aligned, the pressing portion 15 is moved to the ventilation opening 14a side, and the contact portion C, Since the D and the O-ring 3 are brought into close contact with each other, when the electronic device module 36 is mounted, the contact portions C, D and O
The generation of a large frictional force between the ring 3 and the O-ring can be avoided, and the O-ring can be prevented from being damaged. Therefore, it is possible to obtain a highly reliable electronic device which is free from air leakage. Further, since the pressing means can have a simpler configuration, cost reduction and the like can be achieved.

[0024]

According to the electronic apparatus of the present invention,
Since it has a pressing part that presses the leak prevention member against the duct surface around the ventilation port and the ventilation duct surface around the ventilation port,
It is possible to prevent the leakage prevention member from being damaged, and to obtain a highly reliable electronic device that is free from air leakage.

Further, in the electronic apparatus according to the next invention, the leakage preventing member is provided with the first leakage preventing member provided around the ventilation port side of the engaging portion between the ventilation port and the ventilation port. A second leakage prevention member provided around the ventilation port side of the first member, and the pressing portion is provided across the first leakage prevention member and the second leakage prevention member so that the first leakage prevention member is provided. Since the second leakage prevention member is pressed against the ventilation duct around the ventilation hole while pressing against the surface of the duct around the ventilation hole, it is possible to prevent the leakage prevention member from being damaged with a simple configuration, and there is a possibility of air leakage. A highly reliable electronic device can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating an electronic apparatus according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA shown in FIG.

FIG. 3 is an enlarged view of a portion B shown in FIG.

FIG. 4 is an explanatory view showing a pressing portion viewed from an arrow V shown in FIG. 1;

FIG. 5 is a detailed explanatory view of a holder.

FIG. 6 is an explanatory view showing a pressing portion using a leaf spring.

FIG. 7 is an explanatory view showing a pressing portion from arrow V1 shown in FIG. 6;

FIG. 8 is an explanatory view showing a pressing portion using a screw.

FIG. 9 is an explanatory view showing a ventilation duct integrally formed with a pressing portion.

FIG. 10 is an explanatory view showing another attachment example of the ventilation duct shown in FIG. 9;

FIG. 11 is an explanatory view showing a leakage prevention structure according to a second embodiment of the present invention.

FIG. 12 is an explanatory diagram showing a conventional electronic device.

13 is a sectional view taken along line AA shown in FIG.

14 is an enlarged view of a portion B shown in FIG.

FIG. 15 is an explanatory view showing a guide block starting from arrow V shown in FIG. 12;

FIG. 16 is an explanatory diagram showing an engagement state between the protrusion shown in FIG. 15 and a ventilation duct.

[Explanation of symbols]

1 electronic equipment, 2 holder, 3 O-ring,
4 pressing part, 4a holding part, 4b pressed part, 5
Support rod, 6 holder, 7 leaf spring, 8 screw,
Reference Signs List 9 flow path branching part, 10 holder part, 11 pressing part, 11a ventilation port, 11b holding part, 11c pressed part, 12 flow path branching part, 13 pressing part, 13
a vent, 13b holding part, 13c pressed part,
14 flow path branching part, 15 pressing part.

Claims (2)

[Claims] 1. An electronic circuit module comprising: a duct having a ventilation port through which cooling air passes, and a ventilation duct having a ventilation port which engages with the duct and vents the cooling air through the ventilation port. In an electronic device including a leak prevention member for preventing air from leaking from an engagement portion between the ventilation hole and the ventilation hole, the leakage prevention member may be provided between the duct surface around the ventilation hole and the ventilation hole. An electronic device, comprising: a pressing portion that presses against a surface of the surrounding ventilation duct. 2. A leakage prevention member is provided around a first leakage prevention member provided around the ventilation port side of an engagement portion between the ventilation hole and the ventilation port and around the ventilation port side of the engagement portion. The second
A pressing portion is provided across the first leak preventing member and the second leak preventing member, and the first leak preventing member is provided on a duct surface around the ventilation opening. 2. The electronic apparatus according to claim 1, wherein the second leak prevention member is pressed against the surface of the ventilation duct around the ventilation port while being pressed.