Electronic devices

Abstract

The electronic device (1) comprises: an electronic component including a microphone (21) and a substrate (23); a housing (10) for accommodating the electronic component; a through hole (31) formed in the housing (10) and connected to the microphone (21); a first groove (32) connected to the through hole (31); a second groove (33) having one end connected to the first groove (32); and a third groove (34) formed in a wall (13) of the housing (10) adjacent to the wall (11) and connected to the first groove (32), wherein the first groove (32) has an inclined surface (32B) inclined in such a manner that the cross-sectional area increases as it moves away from the through hole (31).

Description

Technical Field

[0001] The present invention relates to electronic equipment. Background Art

[0002] For example, electronic devices such as driving recorders mounted on two-wheeled vehicles and containing microphones and the like are known. There are known recording devices with waterproof functions for outdoor use, such as driving recorder bodies mainly used for two-wheeled vehicles and cameras used for the driving recorder bodies (for example, see Patent Document 1). The technology described in Patent Document 1 forms a vent hole in a housing portion that has been waterproofed, and the vent hole is sealed with a ventilated and waterproof membrane that has both air permeability and waterproof properties.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Utility Model Registration No. 3238502 Summary of the invention

[0006] Electronic devices mounted on two-wheeled vehicles are used in an environment exposed to the outdoors in order to be conveniently installed on the two-wheeled vehicles, and therefore require high waterproofness, so a test to confirm the waterproofness is performed. In the technology described in Patent Document 1, for example, when water is sprayed from the vent hole side, the ventilated waterproof membrane may be damaged.

[0007] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to suppress damage to a waterproof sheet and improve waterproof properties.

[0008] In order to solve the above-mentioned problems and achieve the purpose, the electronic device of the present invention includes: an electronic component, which includes a microphone and a substrate; a shell, which accommodates the electronic component; a through hole, which is formed in a first wall portion of the shell and connected to the microphone; a first groove portion, which is connected to the through hole; a second groove portion, one end of which is connected to the first groove portion; and a third groove portion, which is formed in a second wall portion of the shell adjacent to the first wall portion and connected to the first groove portion, the first groove portion having an inclined surface inclined in such a manner that the cross-sectional area increases as it moves away from the through hole.

[0009] According to the present invention, it is possible to suppress damage to the waterproof sheet and improve the waterproof property. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a perspective view of the electronic device according to the first embodiment.

[0011] Figure 2 It is a cross-sectional view of the electronic device according to the first embodiment.

[0012] Figure 3 yes Figure 2The partially enlarged view is a diagram showing the state of spraying water.

[0013] Figure 4 yes Figure 2 The partially enlarged view is a diagram showing a state where the bottom surface is used as the mounting surface.

[0014] Figure 5 yes Figure 2 The partially enlarged view is a diagram showing the state where the side surface is used as the mounting surface.

[0015] Figure 6 This is a partially enlarged view of an example of a conventional electronic device.

[0016] Figure 7 This is a partially enlarged view of another example of a conventional electronic device.

[0017] Figure 8 This is a partially enlarged view of another example of a conventional electronic device, and is a view showing a state where the bottom surface is used as a mounting surface.

[0018] Fig. 9 This is a partially enlarged view of an example of a conventional electronic device, and is a view showing a state where the side surface is used as a mounting surface.

[0019] Fig.10 This is a partially enlarged view of another example of a conventional electronic device. DETAILED DESCRIPTION

[0020] Hereinafter, an embodiment of the electronic device 1 of the present invention will be described in detail with reference to the drawings. In addition, the present invention is not limited to the following embodiment.

[0021] (First Embodiment)

[0022] (Electronic equipment)

[0023] Figure 1 It is a perspective view of the electronic device according to the first embodiment. Figure 2 This is a cross-sectional view of the electronic device of the first embodiment when it is observed from the wall portion 12 described later and divided along the drainage structure 30. In the figure, the flow of water is represented by solid arrows. The electronic device 1 is applied to, for example, a driving recorder for a two-wheeled vehicle, which is installed on a two-wheeled vehicle, etc., and in which a camera and a shell containing a microphone are formed separately. In this embodiment, as an example, a case where the electronic device 1 is a device including a microphone of a driving recorder for a two-wheeled vehicle is described. In the following description, the description of the camera of the driving recorder for a two-wheeled vehicle is omitted. The electronic device 1 includes a shell 10, a microphone 21 contained in the shell 10, a waterproof sheet 22, a substrate 23, and a drainage structure 30 formed in the shell 10.

[0024] The microphone 21 collects external sound. The microphone 21 is housed in the housing 10. The microphone 21 is arranged to face the through hole 31 arranged in the housing 10. The sound collected by the microphone 21 is processed by the circuit on the substrate 23.

[0025] The waterproof sheet 22 is a sheet material that prevents water from entering the microphone 21 side. The waterproof sheet 22 is made of a waterproof and breathable material. The waterproof sheet 22 is disposed in the middle portion of the through hole 31 in the axial direction.

[0026] The substrate 23 controls the electronic device 1. The substrate 23 is housed inside the housing 10. A circuit for processing the sound picked up by the microphone 21 is mounted on the substrate 23. The substrate 23 is arranged on the inner side of the housing 10 relative to the microphone 21.

[0027] (case)

[0028] The housing 10 is formed in a rectangular box shape. Electronic components including a microphone 21 and a substrate 23 are accommodated inside the housing 10. In the present embodiment, at least the microphone 21, the waterproof sheet 22 and the substrate 23 are arranged inside the housing 10. The housing 10 includes a wall portion (first wall portion) 11, a wall portion 12, a wall portion (second wall portion) 13, a wall portion 14, a wall portion (third wall portion) 15 and a wall portion 16. The outer shape of the housing 10 is defined by the wall portion 11, the wall portion 12, the wall portion 13, the wall portion 14, the wall portion 15 and the wall portion 16. The wall portion 11 is the bottom wall portion of the housing 10. The surface 11A of the wall portion 11 is the mounting surface of the electronic device 1. The wall portion 12 is arranged opposite to the wall portion 11. The wall portion 12 is the cover portion of the housing 10. The wall portion 13, the wall portion 14, the wall portion 15 and the wall portion 16 are the side wall portions of the housing 10. Walls 13, 14, 15, and 16 are erected from housing 10. Wall 15 is disposed opposite to wall 13. Wall 16 is disposed opposite to wall 14. In the present embodiment, wall 11, 13, 14, 15, and 16 are formed as one body.

[0029] The protrusion 17 is located around the front end of the through hole 31 and is a portion protruding toward the first groove 32. The protrusion 17 is located closer to the innermost portion of the first groove 32 in the Z-axis direction and closest to the microphone 21. The protrusion 17 is formed integrally with the wall 11 and the wall 13.

[0030] (Drainage structure)

[0031] The drain structure 30 is formed in the housing 10. The drain structure 30 includes a through hole 31, a first groove portion 32, a second groove portion 33, and a third groove portion 34. The through hole 31 and the second groove portion 33 are formed in the wall portion 11. The third groove portion 34 is formed in the wall portion 13.

[0032] The through hole 31 is a through hole that penetrates to the microphone 21. The through hole 31 is formed in the housing 10 and connected to the microphone 21. The through hole 31 is formed in the wall 11. The through hole 31 is connected to the first groove 32. The diameter of the through hole 31 is narrower than the narrowest part of the cross section of the first groove 32.

[0033] The first groove 32 is formed in the wall 11. The end of the first groove 32 on the microphone 21 side in the Z-axis direction is connected to the through hole 31. The first groove 32 is formed in a horn shape. When viewed in the X-axis direction, the cross-sectional area of ​​the first groove 32 decreases along the Z-axis direction, in other words, toward the through hole 31. The first groove 32 has an inclined surface 32B inclined in such a manner that the cross-sectional area increases as it moves away from the through hole 31 when viewed in the X-axis direction. The first groove 32 is exposed on the surface 11A of the wall 11.

[0034] When the housing 10 is mounted on an object W such as a vehicle body of a two-wheeled vehicle using the surface 11A of the wall 11 as a mounting surface, an end 32A of the first groove 32 on the side opposite to the through hole 31 side in the Z-axis direction and on the side of the wall 13 is exposed to the outside. When the housing 10 is mounted on the object W using the surface 11A of the wall 11 as a mounting surface, the end 32A of the first groove 32 can pick up external sound.

[0035] In the cross-sectional view viewed in the X-axis direction, the surface of the first groove 32 on the wall 15 side in the Y-axis direction is defined as an inclined surface 32B. The inclined surface 32B of the first groove 32 is inclined from the wall 13 side toward the wall 15 side as it moves away from the through hole 31 .

[0036] The second groove 33 is formed in the wall 11. The second groove 33 is connected to the first groove 32. The second groove 33 is formed along the Y-axis direction. One end 33A of the second groove 33 in the Y-axis direction is connected to the first groove 32. The second groove 33 is formed to the other end of the wall 11 in the Y-axis direction. The second groove 33 is formed to the wall 15 arranged opposite to the wall 13. The depth of the second groove 33 in the Z-axis direction is shallower than that of the first groove 32.

[0037] When the housing 10 is mounted on the object W using the surface 11A of the wall 11 as the mounting surface, the other end 33B of the second groove 33 in the Y-axis direction is exposed to the outside. When the housing 10 is mounted on the object W using the surface 11A of the wall 11 as the mounting surface, the end 33B of the second groove 33 can discharge water that has intruded into the drainage structure 30 to the outside.

[0038] The third groove 34 is formed in the wall 13 adjacent to the wall 11 of the housing 10. The third groove 34 is connected to the first groove 32. The protrusion 17 is located between the connection portion of the third groove 34 connected to the first groove 32 and the through hole 31. When the housing 10 is mounted on the mounted object W using the surface 11A of the wall 11 as the mounting surface, the third groove 34 is exposed to the outside.

[0039] The third groove portion 34 has an inclined surface that is inclined from the upper side toward the lower side with a cross-sectional area becoming narrower as it approaches the through hole 31 when viewed in the X-axis direction.

[0040] (Function of drainage structure)

[0041] Next, the operation of the drainage structure 30 of the electronic device 1 configured as described above will be described.

[0042] The electronic device 1 is mounted on a two-wheeled vehicle or the like, and therefore a test to confirm the waterproof property is performed. Figure 3 , a case where water is sprayed on the electronic device 1 in a waterproof test of the electronic device 1 is described. Figure 3 yes Figure 2 The partially enlarged view is a diagram showing the state of water injection. Figure 3 In the state where the housing 10 is mounted on the object W with the wall portion 11 facing downward as the mounting surface, water is sprayed from the side surface 113 toward the housing 10 as shown by the thick arrow. Figure 3 As shown, the water jet does not directly hit the through hole 31. The water that penetrates the drainage structure 30 from the third groove portion 34 penetrates the first groove portion 32. Since the third groove portion 34 has an inclined surface, it is easily guided by the first groove portion 32. A part of the water that penetrates the drainage structure 30 from the third groove portion 34 hits the protrusion 17 and flows downward and penetrates the first groove portion 32. The water that penetrates the first groove portion 32 and flows downward flows along the second groove portion 33 in the direction of the arrow by the water flow, and is discharged to the outside from the end portion 33B or the end portion 32A of the first groove portion 32. Since the water that enters the drainage structure 30 is discharged to the outside, the possibility of damaging the waterproof sheet 22 is reduced. Since the diameter of the through hole 31 is smaller than the diameter of the first groove portion 32, it is difficult for the water that enters the drainage structure 30 from the third groove portion 34 to enter the through hole 31.

[0043] In contrast, using Figure 6 , Figure 7 , illustrating the situation of water jetting on existing electronic equipment. Figure 6 This is a partially enlarged view of an example of a conventional electronic device. Figure 6In the embodiment, the through hole 134 for sound pickup is formed straightly along the Y-axis direction with respect to the microphone 21. The through hole 134 is formed in the wall portion 113 of the housing 110. When the housing 110 is mounted on the object W with the wall portion 111 of the housing 110 facing downward as the mounting surface, water is sprayed from the side 113 to the housing 110 as shown by the thick arrow. The water intruding from the third groove 134 directly contacts the waterproof sheet 22. Therefore, when the momentum of the water spray is strong or the pressure of the water is increased, the waterproof sheet 22 may be damaged.

[0044] Figure 7 This is a partially enlarged view of another example of a conventional electronic device. Figure 7 In the embodiment, the through hole 131 and the through hole 134 for sound pickup are formed in an L shape relative to the microphone 21. The through hole 131 is connected to the through hole 134. The through hole 131 is formed straightly along the Z-axis direction relative to the microphone 21. The diameter of the through hole 131 is larger than the diameter of the through hole 134. The through hole 134 is formed straightly along the Y-axis direction in the wall portion 113 of the housing 110. In a state where the housing 110 is mounted on the object W with the wall portion 111 of the housing 110 facing downward as a mounting surface, water is sprayed toward the housing 110 from the side 113 as shown by the thick arrow. The water that penetrates from the third groove 134 penetrates into the through hole 131 due to the water flow and hits the waterproof sheet 22. Therefore, when the momentum of the water spray is strong or the pressure of the water is increased, the waterproof sheet 22 may be damaged.

[0045] In such Figure 6 , Figure 7 In the conventional electronic device shown, it is necessary to take measures to prevent the water jet from directly contacting the waterproof sheet 22. When such measures are taken, the structure of the hole and groove for collecting sound communicating with the microphone 21 becomes complicated, and the cost may increase.

[0046] use Figure 4 The drainage structure 30 of the electronic device 1 will be described. Figure 4 yes Figure 2 The electronic device 1 may be a partially enlarged view of a two-wheeled vehicle or the like. Figure 4 Install in the direction shown. Figure 4 This is a state where the housing 10 is mounted on the object W with the side wall 11 as the mounting surface. Figure 4 In the embodiment, the wall portion 11 is arranged along the up-down direction. Figure 4In the embodiment, the wall portion 13 is arranged upward and the wall portion 15 is arranged downward. Water such as rainwater enters the drainage structure 30 from the third groove portion 34 and the end portion 32A on the wall portion 13 side of the first groove portion 32, and enters the first groove portion 32. The water entering from the third groove portion 34 drips downward along the inclined surface of the third groove portion 34 and enters the first groove portion 32. The water dripping from the third groove portion 34 to the first groove portion 32 hits the protrusion 17 and drips downward, and enters the first groove portion 32. The water that has entered the first groove portion 32 drips downward and flows in the direction of the arrow along the second groove portion 33 and is discharged to the outside from the end portion 33B. The through hole 31 extends in a direction different from the path of the water entering the drainage structure 30, and it is not easy to enter the through hole 31.

[0047] In contrast, using Figure 8 A groove structure 130 of a conventional electronic device will be described. Figure 8 FIG. 1 is a partially enlarged view of an example of a conventional electronic device, and is a view showing a state in which the bottom surface is used as a mounting surface. Figure 8 Install in the direction shown. Figure 8 This is a state where the housing 110 is mounted on the object W with the side wall 111 being used as the mounting surface. Figure 8 In the embodiment, the wall portion 111 is arranged along the up-down direction. Figure 8 In the embodiment, the wall portion 113 is arranged upward, and the wall portion 115 (not shown) is arranged downward. The third groove 134 opens upward. Water such as rainwater enters the groove structure 130 from the third groove 134 and enters the through hole 131. The water entering the groove structure 130 is not discharged but remains inside.

[0048] use Figure 5 , the sound pickup of the electronic device 1 is described. Figure 5 yes Figure 2 The partially enlarged view is a view showing the state where the side surface is used as the mounting surface. Figure 5 In FIG. 1 , the housing 10 is mounted on the object W with the side wall 13 as the mounting surface. Figure 5 In the embodiment, the wall portion 13 is arranged along the up-down direction. Figure 5 In the embodiment, the wall portion 12 (not shown) is arranged to face upward, and the wall portion 11 is arranged to face downward. In this case, the third groove portion 34 is blocked by the object to be mounted W. Figure 5 In the example shown, sound can be collected from the first groove portion 32 and the second groove portion 33 .

[0049] In contrast, using Fig. 9 , Fig.10 , the sound pickup of the existing electronic device 1 is described. Fig. 9This is a partially enlarged view of another example of a conventional electronic device, and is a view showing a state where the side surface is used as a mounting surface. Fig. 9 and Figure 6 The same structure. Fig. 9 In the embodiment, the housing 110 is mounted on the object W with the wall portion 113 facing the side as the mounting surface. In this case, the third groove 134 is blocked by the object W, so it is difficult to pick up sound. Thus, conventional electronic devices have restrictions on the mounting direction.

[0050] Fig.10 It is a partial enlarged view of another example of a conventional electronic device. In conventional electronic devices, a spacer S needs to be arranged between the object to be mounted W and the housing 110 so that the surface of the housing 110 exposed by the through hole 131 is not blocked by the object to be mounted W. Thus, conventional electronic devices have limitations in mounting.

[0051] (Effect)

[0052] As described above, in the present embodiment, the third groove portion 34 formed in the wall portion 13 has an inclined surface, so that the water intruding from the third groove portion 34 can be guided to the first groove portion 32. In the present embodiment, a portion of the water intruding from the third groove portion 34 into the drainage structure 30 can be guided so that it hits the protrusion 17 and flows downward and intrudes into the first groove portion 32. In the present embodiment, the water that intrudes into the first groove portion 32 and flows downward can be drained to the outside from the end portion 33B or the end portion 32A of the first groove portion 32 by flowing along the second groove portion 33 in the direction of the arrow. In the present embodiment, since the water intruding into the drainage structure 30 is discharged to the outside, the possibility of damage to the waterproof sheet 22 can be reduced. In this way, according to the present embodiment, Figure 3 As shown, the housing 10 is mounted on the object W with the downward wall 11 as the mounting surface, and the waterproof sheet 22 can be prevented from being damaged in a waterproof test in which water is sprayed from the side 113 toward the housing 10. According to this embodiment, the waterproof sheet can be prevented from being damaged and the waterproof property can be improved.

[0053] In this embodiment, water that has entered the first groove portion 32 can be discharged to the outside from the end portion 33B of the second groove portion 33 or the end portion 32A of the first groove portion 32. This embodiment can suppress the increase in water pressure in the drainage structure 30. According to this embodiment, since water does not stay in the drainage structure 30, the orientation of the mounting surface of the housing 10 can be unrestricted.

[0054] In the present embodiment, the protrusion 17 is provided around the front end of the through hole 31. According to the present embodiment, water intruding from the third groove 34 into the drainage structure 30 can hit the protrusion 17 and drip downward. According to the present embodiment, water intruding from the third groove 34 into the drainage structure 30 can be suppressed from intruding into the through hole 31. According to the present embodiment, the waterproof property of the electronic device 1 can be improved.

[0055] In the present embodiment, the diameter of the through hole 31 is smaller than the diameter of the first groove portion 32. According to the present embodiment, it is possible to suppress the water that has intruded from the third groove portion 34 into the drainage structure 30 from intruding into the through hole 31.

[0056] In this embodiment, if Figure 4 As shown, when the housing 10 is mounted on the mounted object W using the side wall portion 11 as the mounting surface, the through hole 31 extends in a direction different from the path of water that enters the drainage structure 30. According to this embodiment, it is possible to suppress water that has entered the drainage structure 30 from entering the through hole 31. According to this embodiment, even when the wall portion 11 is mounted in a state arranged along the up-down direction, it is possible to suppress water from reaching the waterproof sheet 22.

[0057] In this embodiment, if Figure 5 As shown, when the housing 10 is mounted on the object W using the side wall 13 as the mounting surface, even if the third groove 34 is blocked by the object W, sound can be picked up from the first groove 32 and the second groove 33. According to this embodiment, sound can be appropriately picked up regardless of the direction of the mounting surface of the housing 10 and the distance from the object W. According to this embodiment, sound can be appropriately picked up without arranging a spacer.

[0058] In this embodiment, the first groove 32 and the second groove 33 formed in the wall 11 and the third groove 34 formed in the wall 13 are included. According to this embodiment, even when water accumulates in the first groove 32 and the second groove 33, sound can be picked up from the third groove 34. According to this embodiment, even when water accumulates in the third groove 34, sound can be picked up from the first groove 32 and the second groove 33.

[0059] The electronic device 1 of the present invention has been described above, but the present invention can be implemented in various different forms other than the above-described embodiment.

[0060] Industrial Applicability

[0061] The electronic device of the present invention can be used in, for example, a driving recorder of a two-wheeled vehicle.

[0062] Description of Reference Numerals

[0063] 1 Electronic equipment

[0064] 10 Shell

[0065] 11 wall portion (first wall portion)

[0066] 12 Wall

[0067] 13 wall portion (second wall portion)

[0068] 14Wall

[0069] 15 wall portion (third wall portion)

[0070] 16 Wall

[0071] 21 Microphones

[0072] 22 waterproof sheet

[0073] 23 substrate

[0074] 31Through holes

[0075] 32 first groove

[0076] 32B slope

[0077] 33 Second groove

[0078] 34 Third groove

[0079] W Mounted object

Claims

1. An electronic device, comprising: an electronic component including a microphone and a substrate; A housing for accommodating the electronic components; a through hole formed in the first wall portion of the housing and connected to the microphone; A first groove portion connected to the through hole; a second groove portion, one end of which is connected to the first groove portion; as well as A third groove portion is formed on a second wall portion of the housing adjacent to the first wall portion and connected to the first groove portion. The first groove portion has a sloped surface that is inclined so that a cross-sectional area increases as the sloped surface extends away from the through hole toward the second groove portion.

2. The electronic device according to claim 1, wherein: The other end of the second groove portion reaches a third wall portion disposed opposite to the second wall portion and is exposed to the outside.

3. The electronic device according to claim 1, further comprising: The protrusion is arranged around the front end portion of the through hole and protrudes toward the first groove portion.

4. The electronic device according to claim 3, wherein: The protrusion is located between a portion of the third groove portion connected to the first groove portion and the through hole.

5. The electronic device according to claim 1, wherein: The through hole has a diameter narrower than the narrowest portion in the cross section of the first groove portion.

6. The electronic device according to any one of claims 1 to 5, wherein: The first groove is formed into a trumpet shape. When the housing is mounted on an object using the surface of the first wall as a mounting surface, an end portion of the first groove portion on the second wall portion side opposite to the through-hole side is exposed to the outside.

7. The electronic device according to any one of claims 1 to 5, wherein: The second groove portion has a depth shallower than that of the first groove portion.

8. The electronic device according to any one of claims 1 to 5, wherein: The third groove portion has an inclined surface that is inclined so that a cross-sectional area thereof becomes narrower as it approaches the through hole.

9. The electronic device according to any one of claims 1 to 5, further comprising: The waterproof sheet is arranged in the middle part of the through hole.

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