JP7417915B2 - Telephone equipment and intercom systems - Google Patents

Description

TECHNICAL FIELD The present invention relates to a waterproof communication device and an intercom system equipped with this communication device.

2. Description of the Related Art Conventionally, communication devices equipped with microphones are known. As an example of this type of communication device, Patent Document 1 discloses a hands-free intercom in which a microphone is provided inside a housing (case).

Japanese Patent Application Publication No. 11-068259

The communication device is installed, for example, at the entrance of a building. Therefore, rainwater or the like may enter from outside the housing, and the microphone provided inside the housing may become inoperable. Therefore, in order to protect the microphone from water, a waterproof body may be provided between the housing and the microphone. However, in that case, the waterproof body blocks the sound that should be collected by the microphone, so there is a problem that the sound cannot be collected sufficiently.

The present invention provides a communication device and the like that suppresses the sound to be collected from being blocked by a waterproof body.

A telephone communication device according to one aspect of the present invention includes: a circuit board; a microphone surface-mounted on the circuit board; a casing that covers the circuit board and the microphone from a sound receiving side of the microphone; a waterproof body that is disposed on the sound receiving side of the microphone and has a vibrating part that has a larger area than the microphone when viewed from the sound receiving direction of the microphone, the microphone or the circuit board, and the vibrating part; an intermediate member that is provided and defines a distance between the microphone and the vibrating section, and the circuit board is fixed to the casing, so that the intermediate member and the waterproof body are connected to the casing. The intermediate member is fixed between the circuit board and has a cylindrical shape, and has a first surface that is a bottom surface and a second surface that is a side surface, and the housing has a concave shape. The housing part has an inner bottom part and a cylindrical inner part that protrudes from the inner bottom part toward the circuit board, and the inner bottom part of the housing part has a cylindrical inner part that projects from the inner bottom part toward the vibrating part side. an annular protrusion that protrudes into the protrusion; a housing recess provided inside the protrusion; and an annular recess provided between the protrusion and the inner part; is provided with a first casing surface perpendicular to the sound receiving direction, a second casing surface along the sound receiving direction is provided on the inner side of the housing part, and the waterproof body is provided with a first casing surface perpendicular to the sound receiving direction. sandwiched between a casing surface and the first surface facing the first casing surface; and sandwiched between the second casing surface and the second surface facing the second casing surface. It is housed in the housing part in a state of being

An intercom system according to one aspect of the present invention includes the above communication device and a communication device that communicates with the communication device and is different from the communication device.

According to the communication device and the like of the present invention, it is possible to prevent the sound to be collected from being blocked by the waterproof body.

1 is a diagram showing a telephone communication device according to Embodiment 1. FIG. FIG. 3 is a diagram showing how the communication device according to the first embodiment is assembled and manufactured. FIG. 3 is an exploded perspective view showing a sound collection section of the telephone communication device according to the first embodiment. 1A is a cross-sectional view of the sound collection section of the communication device according to Embodiment 1 taken along line III-III shown in FIG. 1A. FIG. 3B is an enlarged view showing a vibrating section of the telephone device shown in FIG. 3A. FIG. 1A is a cross-sectional view of the sound collection section of the communication device according to Embodiment 1 taken along the line IV-IV shown in FIG. 1A. FIG. FIG. 3 is a cross-sectional view of the sound collection section of the communication device according to Modification 1 of Embodiment 1; FIG. 7 is a perspective view of a communication device according to a second modification of the first embodiment. FIG. 7 is a cross-sectional view of the communication device according to Modification 2 of Embodiment 1 taken along line VII-VII shown in FIG. 6; FIG. 2 is a schematic diagram showing an intercom system according to a second embodiment. FIG. 7 is a diagram showing another communication device that constitutes the intercom system according to the second embodiment.

Hereinafter, embodiments will be specifically described with reference to the drawings. Note that the embodiments described below are all inclusive or specific examples. The numerical values, shapes, materials, components, arrangement positions and connection forms of the components shown in the following embodiments are merely examples, and do not limit the present invention. Further, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the most significant concept will be described as arbitrary constituent elements.

Note that each figure is a schematic diagram and is not necessarily strictly illustrated. Furthermore, in each figure, substantially the same configurations are denoted by the same reference numerals, and overlapping explanations may be omitted or simplified. Further, the Z direction shown in each figure is a vertical direction, and the X direction and Y direction are horizontal directions and are orthogonal to each other.

(Embodiment 1)
[1-1. Configuration of communication device]
First, a schematic configuration of a telephone communication device according to the present embodiment will be described with reference to FIGS. 1A and 1B.

FIG. 1A is a diagram showing a telephone communication device 1 according to the first embodiment. FIG. 1B is a diagram showing how the communication device 1 is assembled and manufactured.

The communication device 1 is, for example, an intercom entrance device, and is installed at the entrance of a collective facility. As shown in FIG. 1A, the communication device 1 includes an operation reception section 121, a communication section (125a and 125b), a control section 126, and a communication section 127. Note that the communication device 1 may further include an imaging section and a display section.

Further, as shown in FIG. 1B, the communication device 1 includes a housing 10, a front panel 60 that covers the front surface of the housing 10, a decorative panel 80 having a window portion 81, and a mounting plate that is fixed to a wall of a building or the like. member 85. The telephone device 1 is manufactured, for example, by attaching the casing 10 provided with the front panel 60 to the mounting member 85 and then covering the mounting member 85 and the casing 10 with the decorative panel 80. The front panel 60 is exposed through a window 81 of the decorative panel 80.

As shown in FIG. 1A, the operation reception unit 121 receives an operation from a visitor, such as calling another communication device different from the communication device 1 (for example, an intercom base unit). The operation reception unit 121 is, for example, a user interface such as a touch panel or a numeric keypad.

The communication unit is a device for communicating with residents via other communication devices. The telephone call section includes two sound collection sections 125a that collect sounds emitted by visitors, and a sound output section 125b that outputs signals transmitted from other communication devices as sounds. For example, each sound collection section 125a has a microphone, and the sound output section 125b has a speaker. Note that the front panel 60 of the communication device 1 is provided with a panel sound hole 63 that serves as an entrance for sound.

Based on instructions from the control unit 126, the communication unit 127 transmits a command for operating the other communication device to the other communication device. The communication unit 127 is, for example, a communication circuit such as a communication module.

The control unit 126 controls various components included in the communication device 1. When the control unit 126 receives an operation by the visitor via the operation reception unit 121, the control unit 126 operates another telephone device via the communication unit 127.

Next, a schematic configuration of the sound collection section 125a of the telephone device 1 will be described with reference to FIGS. 2 to 4.

FIG. 2 is an exploded perspective view showing the sound collection section 125a of the communication device 1. As shown in FIG. FIG. 3A is a cross-sectional view of the sound collection section 125a of the communication device 1 taken along the line III--III shown in FIG. 1A. FIG. 3B is an enlarged view showing the vibrating section 51 of the communication device 1 shown in FIG. 3A. FIG. 4 is a cross-sectional view of the sound collection section 125a of the communication device 1 taken along the line IV--IV shown in FIG. 1A.

As shown in FIG. 2, the sound collection section 125a of the communication device 1 includes a circuit board 30, a microphone 20, an intermediate member 40, a waterproof body 50, and a housing 10. The casing 10 has a concave housing portion 14, and the intermediate member 40 is fitted into the housing portion 14 together with the waterproof body 50. The circuit board 30, the microphone 20, the intermediate member 40, and the waterproof body 50 are fixed to the housing 10 using the support 19 of the housing 10, a pressing member 71, and a fastening member 72 such as a screw.

As shown in FIGS. 3A and 4, the communication device 1 includes a front panel 60 that covers the outer surface of the housing 10. As shown in FIGS. The front panel 60 is provided with a panel sound hole 63 that extends through the microphone 20 along the sound receiving direction RS. Further, the housing 10 is provided with a housing sound hole 13 that penetrates along the sound receiving direction RS and communicates with the panel sound hole 63. Further, the intermediate member 40 is provided with an intermediate member sound hole 43 that penetrates along the sound receiving direction RS and communicates with the microphone 20. The microphone 20 collects sound through the panel sound hole 63, the housing sound hole 13, the waterproof body 50, and the intermediate member sound hole 43.

The waterproof body 50 of this embodiment has a vibrating portion 51 having a larger area than the microphone 20 when viewed from the sound receiving direction RS of the microphone 20 (see FIG. 1A). In this communication device 1, since the area of the vibrating part 51 is larger than the area of the microphone 20, it is possible to suppress the sound input to the vibrating part 51 from being attenuated more than necessary, and the sound to be collected is transmitted to the waterproof body 50. This can prevent the camera from being blocked by other people.

Note that the vibrating section 51 is formed by sandwiching a part of the waterproof body 50 between the casing 10 and the intermediate member 40, as shown in FIG. 3B. In the XZ plane, when the housing 10 and the intermediate member 40 are in contact with the waterproof body 50 at different positions, for example, the area surrounded by the contacting part on the inner side may be used as the vibrating part 51. good.

Next, each configuration of the sound collection section 125a of the communication device 1 will be explained.

The circuit board 30 is made of, for example, a resin material or a ceramic material. Wiring and the like connected to the microphone 20 are formed on one main surface 31 of the circuit board 30 .

The microphone 20 has a rectangular parallelepiped shape and is surface mounted on one main surface 31 of the circuit board 30 using solder or the like. The microphone 20 is, for example, a MEMS (Micro Electro Mechanical Systems) microphone. A MEMS microphone includes, for example, a ceramic substrate, a MEMS chip mounted on the ceramic substrate, and a cover attached to the ceramic substrate so as to cover the MEMS chip (not shown). A microphone sound hole 23 is provided on the top surface of the cover to collect sound that has entered through the panel sound hole 63, the housing sound hole 13, the waterproof body 50, and the intermediate member sound hole 43 of the intermediate member 40. ing.

The waterproof body 50 is provided on the sound receiving side of the microphone 20. The waterproof body 50 has a sheet shape, and has a thickness of, for example, 10 μm or more and 50 μm or less. The waterproof body 50 is made of resin that is difficult for liquids such as water to pass through. Note that the waterproof body 50 may be formed of cloth or leather through which liquid does not easily pass, or a metal sheet that does not easily rust.

The waterproof body 50 has a vibrating section 51 that vibrates due to sound entering from the panel sound hole 63, the housing sound hole 13, and the like. The vibrating section 51 is provided between the microphone 20 and the housing 10. Specifically, the vibrating section 51 is provided between the intermediate member sound hole 43 and the housing sound hole 13, and is arranged to extend perpendicularly to the sound receiving direction RS. The vibrating section 51 is formed by fitting the intermediate member 40 together with the waterproof body 50 into the housing portion 14 of the casing 10, and by sandwiching a part of the waterproof body 50 between the intermediate member 40 and the casing 10.

A first space s1 that covers one principal surface of the vibrating section 51 exists on the microphone 20 side (specifically, the microphone sound hole 23 side) of the vibrating section 51. Further, a second space s2 that covers the other main surface of the vibrating section 51 exists on the opposite side of the vibrating section 51 from the microphone 20 (specifically, on the side of the housing sound hole 13).

The intermediate member 40 is made of elastic resin. Intermediate member 40 is provided between microphone 20 and vibrating section 51.

The intermediate member 40 has a cylindrical shape and has a first surface 41 as a bottom surface, a second surface 42 as a side surface, and a top surface 44 facing the bottom surface. The top surface 44 of the intermediate member 40 is provided with an accommodation recess 46 in which the microphone 20 is accommodated. The microphone 20 is accommodated in the accommodation recess 46 by bringing one main surface 31 of the circuit board 30 into contact with the top surface 44 of the intermediate member 40 . The intermediate member 40 of this embodiment defines the distance between the microphone 20 and the vibrating section 51 by housing the microphone 20 therein. Furthermore, the first surface 41 of the intermediate member 40 is provided with a cavity 45 that defines the first space s1 described above. That is, the cavity portion 45 covers one main surface of the vibrating portion 51 via the first space s1.

The intermediate member 40 has a rotation stopper 48 that stops the intermediate member 40 from rotating around an axis Y1 perpendicular to the circuit board 30 (see FIG. 3A). This axis Y1 coincides with the axis of the housing sound hole 13. The rotation stopper 48 is provided so as to protrude outward from the second surface 42 of the intermediate member 40 . The rotation stopper 48 is inserted into the cutout 18 of the housing 10 when the intermediate member 40 is fitted into the housing 14 . The intermediate member 40 is restrained from rotating about the axis Y1 because the rotation stopper 48 is restricted by the notch 18 .

The housing 10 covers the circuit board 30, the microphone 20, the intermediate member 40, and the waterproof body 50 from the sound receiving side of the microphone 20. The housing 10 is made of, for example, a resin material.

The housing portion 14 of the case 10 has an inner bottom portion and a cylindrical inner portion that protrudes from the inner bottom portion toward the circuit board 30 side. The inner bottom of the housing part 14 has an annular protrusion 16 protruding toward the vibrating part 51, a housing recess 15 provided inside the protrusion 16, and a recess provided between the protrusion 16 and the inner part. It has an annular recess 17. The housing recess 15 defines the second space s2 described above. That is, the housing recess 15 covers the other main surface of the vibrating section 51 via the second space s2.

A first housing surface 11 perpendicular to the sound receiving direction RS is provided at the tip of the protrusion 16 . A second housing surface 12 along the sound receiving direction RS is provided on the inner side of the housing portion 14 .

A waterproof body 50 and an intermediate member 40 are housed in the housing portion 14 . At the time of accommodation, the waterproof body 50 is accommodated in the housing part 14 with the outer side of the vibrating part 51 being bent in the sound receiving direction RS. Specifically, the waterproof body 50 is sandwiched between the first casing surface 11 and the first surface 41 opposite to the first casing surface 11, and between the second casing surface 12 and the second casing surface 12. It is housed in a state sandwiched between the second surface 42 facing the.

Further, an annular region 51 a outside the vibrating section 51 of the waterproof body 50 is sandwiched between the housing 10 and the intermediate member 40 . Specifically, the annular region 51 a is sandwiched between the first casing surface 11 of the casing 10 and the first surface 41 of the intermediate member 40 . By sandwiching the waterproof body 50 between the first casing surface 11 and the first surface 41, the vibrating section 51 described above is formed inside the annular region 51a.

Thus, in this embodiment, the intermediate member 40 is fitted into the housing portion 14 of the casing 10 together with the waterproof body 50. By this fitting, a part of the waterproof body 50 is sandwiched between the intermediate member 40 and the housing 10, and a vibrating part 51 is formed. A first space s1 is formed on one main surface side of the vibrating section 51, and a second space s2 is formed on the other main surface side, so that the vibrating section 51 can vibrate in the sound receiving direction RS. . The vibrating section 51 has a circular shape when viewed from the sound receiving direction RS, and has a larger area than the microphone 20. Furthermore, the housing sound hole 13 has a smaller area than the vibrating section 51 when viewed from the sound receiving direction RS.

[1-2. Effects, etc.]
As described above, the communication device 1 according to the present embodiment includes a circuit board 30, a microphone 20 surface-mounted on the circuit board 30, and a housing that covers the circuit board 30 and the microphone 20 from the sound receiving side of the microphone 20. The microphone 20 includes a body 10 and a waterproof body 50, at least a portion of which is disposed on the sound receiving side of the microphone 20. The waterproof body 50 has a vibrating portion 51 having a larger area than the microphone 20 when viewed from the sound receiving direction RS of the microphone 20.

In this way, in the telephone device 1, since the area of the vibrating part 51 is larger than the area of the microphone 20, it is possible to suppress the sound input to the vibrating part 51 from being attenuated more than necessary, and the sound to be collected can be collected by the waterproof body. 50 can be prevented from being blocked.

Furthermore, the vibrating section 51 may be provided between the microphone 20 or the circuit board 30 and the housing 10.

According to this, since the vibrating part 51 is located closer to the microphone 20 or the circuit board 30 than the housing 10, the vibrating part 51 is prevented from coming into contact with water outside the housing 10, and the vibration of the vibrating part 51 is suppressed. Attenuation can be suppressed. Thereby, it is possible to prevent the sound to be collected from being blocked by the waterproof body 50.

The communication device 1 may further include an intermediate member 40 that is provided between the microphone 20 or the circuit board 30 and the vibrating section 51 and defining the distance between the microphone 20 and the vibrating section 51.

In this way, by providing the communication device 1 with the intermediate member 40 that defines the distance between the microphone 20 and the vibrating section 51, variations in sound collection quality of the microphone 20 can be suppressed.

Further, the intermediate member 40 has a cavity 45 that defines a first space s1 that exists on the microphone 20 side of the vibrating section 51, and the housing 10 exists on the opposite side of the vibrating section 51 from the microphone 20. It may have a housing recess 15 that defines the second space s2.

In this way, the first space s1 is formed on the microphone 20 side of the vibrating section 51, and the second space s2 is formed on the side opposite to the microphone 20, so that the vibration of the vibrating section 51 is inhibited. can be suppressed. Thereby, it is possible to suppress the sound input to the vibrating section 51 from being attenuated, and it is possible to suppress the sound to be collected from being blocked by the waterproof body 50.

Furthermore, the annular region 51a outside the vibrating section 51 of the waterproof body 50 may be sandwiched between the housing 10 and the intermediate member 40.

In this way, by sandwiching the outer annular region 51a of the vibrating section 51 between the housing 10 and the intermediate member 40, a node can be formed when the vibrating section 51 vibrates. Thereby, it is possible to suppress the sound input to the vibrating section 51 from being attenuated, and it is possible to suppress the sound to be collected from being blocked by the waterproof body 50.

Further, the casing 10 has a first casing surface 11 perpendicular to the sound receiving direction RS and a second casing surface 12 along the sound receiving direction RS, and the intermediate member 40 faces the first casing surface 11. The waterproof body 50 has a first surface 41 and a second surface 42 opposite to the second casing surface 12 , and the waterproof body 50 is arranged between the first casing surface 11 and the first surface 41 and between the second casing surface 12 and the second casing surface 12 . It may be sandwiched between the second surface 42 and the second surface 42 .

In this way, by sandwiching the waterproof body 50 between the first casing surface 11 and the first surface 41 and between the second casing surface 12 and the second surface 42, the waterproof body 50 is securely fixed. can do. Thereby, it is possible to suppress the sound input to the waterproof body 50 from being attenuated, and it is possible to suppress the sound that should be collected from being blocked by the waterproof body 50.

Further, the intermediate member 40 has an intermediate member sound hole 43 along the sound receiving direction RS, and the intermediate member sound hole 43 communicates with the microphone 20 through the circuit board 30 or without the circuit board 30. You can.

According to this, the sound input to the vibrating section 51 can be propagated to the microphone 20 via the intermediate member sound hole 43.

Further, the housing 10 has a housing sound hole 13 along the sound receiving direction RS, and the housing sound hole 13 is connected to the intermediate member sound hole 43 and the vibrating part 51 when viewed from the sound receiving direction RS. They may overlap.

According to this, it is possible to suppress the sound input from the housing sound hole 13 to the vibration section 51 and the sound input to the intermediate member sound hole 43 via the vibration section 51 from attenuating.

Further, the housing sound hole 13 may have a smaller area than the vibrating section 51 when viewed from the sound receiving direction RS.

According to this, it is possible to suppress the vibrating part 51 from coming into contact with water outside the housing 10, and it is possible to suppress the vibration of the vibrating part 51 from being attenuated. Thereby, it is possible to prevent the sound to be collected from being blocked by the waterproof body 50.

Furthermore, the intermediate member 40 may include a rotation stopper 48 that stops the intermediate member 40 from rotating around the axis Y1 perpendicular to the circuit board 30.

By regulating the rotation of the intermediate member 40 in this manner, the vibration of the vibrating section 51 can be stabilized. Thereby, variations in sound collection quality of the microphone 20 can be suppressed.

Further, the waterproof body 50 may have a sheet shape, and the vibrating section 51 may vibrate in the sound receiving direction RS.

In this way, by the vibrating part 51 vibrating in the sound receiving direction RS, it is possible to suppress the sound input to the vibrating part 51 from being attenuated more than necessary, and the sound to be collected is blocked by the waterproof body 50. This can be suppressed.

Further, the vibrating section 51 may have a circular shape when viewed from the sound receiving direction RS.

According to this, good frequency characteristics can be obtained in the vibrating section 51. Thereby, it is possible to prevent the sound input to the vibrating section 51 from being attenuated more than necessary, and it is possible to prevent the sound to be collected from being blocked by the waterproof body 50.

[1-3. Modification 1 of Embodiment 1]
Next, the configuration of the sound collection section 125a of the communication device 1A according to the first modification of the first embodiment will be described with reference to FIG. 5. In a first modification of the first embodiment, an example will be described in which the circuit board 30 is provided on the sound receiving side of the microphone 20.

FIG. 5 is a cross-sectional view of the sound collection section 125a of the communication device 1A according to the first modification.

As shown in FIG. 5, the sound collection section 125a of the communication device 1A includes a microphone 20, a circuit board 30, an intermediate member 40, a waterproof body 50, and a housing 10. The casing 10 has a concave housing portion 14, and the intermediate member 40 is fitted into the housing portion 14 together with the waterproof body 50.

The circuit board 30 has one main surface 31 on which the microphone 20 is mounted, and the other main surface 32 located closer to the vibrating section 51 than the one main surface 31. Further, the circuit board 30 is provided with a board sound hole 33 that penetrates the circuit board 30. The substrate sound hole 33 is formed at a position where the first space s1 and the microphone 20 communicate with each other, and overlaps with the vibrating section 51 when viewed from the sound receiving direction RS.

The microphone 20 is, for example, a MEMS microphone. A MEMS microphone includes, for example, a ceramic substrate, a MEMS chip mounted on the ceramic substrate, and a cover attached to the ceramic substrate so as to cover the MEMS chip. The MEMS chip collects the sound that enters the microphone 20 via the panel sound hole 63, the housing sound hole 13, the waterproof body 50, the intermediate member sound hole 43, and the board sound hole 33.

The waterproof body 50 has a vibrating part 51 that vibrates due to sound. The vibrating section 51 is provided between the circuit board 30 and the housing 10. Specifically, the vibrating section 51 is provided between the substrate sound hole 33 and the housing sound hole 13, and is arranged to extend perpendicularly to the sound receiving direction RS. The vibrating section 51 is formed by fitting the intermediate member 40 together with the waterproof body 50 into the housing portion 14 of the casing 10, and by sandwiching a part of the waterproof body 50 between the intermediate member 40 and the casing 10.

A first space s1 that covers one principal surface of the vibrating section 51 exists on the microphone 20 side (specifically, the substrate sound hole 33 side) of the vibrating section 51. Further, a second space s2 that covers the other main surface of the vibrating section 51 exists on the side of the housing 10 of the vibrating section 51 (specifically, on the side of the housing sound hole 13).

Intermediate member 40 is provided between circuit board 30 and vibrating section 51. The intermediate member 40 has a cylindrical shape and includes a first surface 41 that is a bottom surface, a second surface 42 that is a side surface, and a top surface 44 that is opposite to the bottom surface. The circuit board 30 is arranged on the intermediate member 40 so that the other main surface 32 of the circuit board 30 is in contact with the top surface 44 of the intermediate member 40 . The intermediate member 40, together with the circuit board 30, defines the distance between the microphone 20 and the vibrating section 51. The intermediate member 40 is provided with a cavity 45 that defines the first space s1 described above.

The housing portion 14 of the case 10 has an inner bottom portion and a cylindrical inner portion that protrudes from the inner bottom portion toward the circuit board 30 side. The inner bottom of the housing part 14 has an annular protrusion 16 protruding toward the vibrating part 51, a housing recess 15 provided inside the protrusion 16, and a recess provided between the protrusion 16 and the inner part. It is constituted by an annular recess 17. The housing recess 15 defines the second space s2 described above.

A first housing surface 11 perpendicular to the sound receiving direction RS is provided at the tip of the protrusion 16 . A second housing surface 12 along the sound receiving direction RS is provided on the inner side of the housing portion 14 .

The waterproof body 50 is sandwiched between a first casing surface 11 and a first surface 41 facing the first casing surface 11 , and is sandwiched between a second casing surface 12 and a second casing surface 41 facing the second casing surface 12 . It is accommodated in a state sandwiched between the surface 42 and the surface 42 .

Further, an annular region 51 a outside the vibrating section 51 of the waterproof body 50 is sandwiched between the housing 10 and the intermediate member 40 . Specifically, the annular region 51 a is sandwiched between the first casing surface 11 of the casing 10 and the first surface 41 of the intermediate member 40 . By sandwiching the waterproof body 50 between the first casing surface 11 and the first surface 41, the vibrating section 51 described above is formed inside the annular region 51a.

In this manner, also in Modification 1, the intermediate member 40 is fitted into the housing portion 14 of the casing 10 together with the waterproof body 50. By this fitting, a part of the waterproof body 50 is sandwiched between the intermediate member 40 and the housing 10, and a vibrating part 51 is formed. A first space s1 is formed on one main surface side of the vibrating section 51, and a second space s2 is formed on the other main surface side, so that the vibrating section 51 can vibrate in the sound receiving direction RS. . The vibrating section 51 has a circular shape when viewed from the sound receiving direction RS, and has a larger area than the microphone 20. Also in the communication device 1A, since the area of the vibrating part 51 is larger than the area of the microphone 20, it is possible to suppress the sound to be collected from being blocked by the waterproof body 50.

[1-4. Modification 2 of Embodiment 1]
Next, a communication device 1B according to a second modification of the first embodiment will be described with reference to FIGS. 6 and 7. In a second modification, an example will be described in which the sound collection section 125a of the communication device 1B has drainage grooves c1 and c2.

FIG. 6 is a perspective view of a communication device 1B according to a second modification. FIG. 7 is a cross-sectional view of the communication device 1B according to Modification Example 2 taken along the line VII-VII shown in FIG.

As shown in FIG. 6, the communication device 1B includes an operation reception section 121, a communication section (125a and 125b), a control section 126, and a communication section 127.

The telephone call section includes two sound collection sections 125a that collect sounds emitted by visitors, and a sound output section 125b that outputs signals transmitted from other communication devices as sounds. A plurality of panel sound holes 63 are provided in the front panel 60 that covers each sound collection section 125a.

Each sound collection section 125a is provided with a drainage groove c1 for draining water that enters from the outside. The drain c1 is connected to the panel sound hole 63. As shown in FIG. 6, each drainage groove c1 is formed to extend outward and downward from the center of the communication device 1B.

Further, as shown in FIG. 7, the housing 10 is provided with a drainage groove c2. The drainage groove c2 is a groove for draining water that has entered from the outside through the panel sound hole 63. The drainage groove c2 is formed to connect both the housing sound hole 13 and the drainage groove c1.

In the communication device 1B according to the second modification of the first embodiment, the housing 10 has a drain c2 for draining water that enters from the outside.

Since the communication device 1B has the drain c2, it is possible to suppress water from entering the communication device 1B. Thereby, it is possible to suppress the vibrating part 51 from coming into contact with water, and suppressing the vibration of the vibrating part 51 from being attenuated. Thereby, it is possible to prevent the sound to be collected from being blocked by the waterproof body 50.

Further, in the communication device 1B, the height of the second space s2 may be lower than the height of the first space s1. According to this structure, it is possible to suppress water from accumulating in the second space s2.

(Embodiment 2)
Next, an intercom system according to a second embodiment will be described with reference to FIGS. 8 and 9. FIG. 8 is a schematic diagram showing an intercom system 100 according to the second embodiment.

As shown in FIG. 8, the intercom system 100 is provided in a collective facility H101. The collective facility H101 includes a plurality of facilities 101, 201, 301 such as residences or offices, and an entrance which is an example of a common space.

The intercom system 100 includes a communication device (an intercom entrance device) 1, a control device 150, other communication devices (interphone base devices) 160a, 160b, 160c different from the communication device 1, and a plurality of intercom slave devices 170a, 170b, 170c. Hereinafter, the other communication device will be referred to as an intercom base unit.

The control device 150 is a device that controls communication between the telephone device 1 and each intercom base unit 160a to 160c.

Each of the intercom base units 160a to 160c is installed within each of the facilities 101 to 301.

The intercom handsets 170a to 170c are door phones, and are installed at the entrances of the respective facilities 101 to 301. For example, the intercom slave unit 170a is directly connected to the intercom base unit 160a and can communicate with the intercom base unit 160a.

Although only three sets of intercom base units 160a to 160c and intercom slave units 170a to 70c are illustrated in FIG. 8, the intercom system 100 actually includes multiple sets of intercom units depending on the number of facilities in the collective facility H101. Equipped with a base unit and an intercom slave unit. Further, in FIG. 8, each of the intercom base units 160a to 160c is directly connected to the control device 150, but the present invention is not limited to this. A branch is placed on the main line connected to the control device 150, and Each intercom base unit 160a to 160c may be connected to the branched main line.

Next, the intercom base units 160a to 160c of the intercom system 100 will be explained. Note that the communication device 1 has the same configuration as the communication device 1 of Embodiment 1, so a description thereof will be omitted.

FIG. 9 is a diagram showing another telephone device that constitutes the intercom system 100. In FIG. 9, explanation will be given by taking as an example the intercom base unit 160a among the intercom base units 160a to 160c, which are other communication devices.

As shown in FIG. 9, the intercom base unit 160a includes a communication section 167, a control section 166, a talking section (164a and 164b), and an input reception section 161.

The communication unit 167 receives the operation command transmitted from the control device 150. The communication unit 167 is, for example, a communication circuit such as a communication module.

The input reception unit 161 is a user interface that accepts operations for responding to visitors. The input reception unit 161 is, for example, a touch panel or a hardware button.

The control unit 166 causes the communication unit to output a ring tone based on the command received via the communication unit 167. The control unit 166 is, for example, a microcomputer or a processor.

The telephone communication unit is a device for communicating with a visitor who has performed a calling operation using the telephone communication device 1. The communication unit includes a sound collection unit 164a that collects sounds emitted by a resident, and a sound output unit 164b that outputs a signal transmitted from the communication device 1 via the control device 150 as sound. The sound collection section 164a includes, for example, a microphone, and the sound output section 164b includes, for example, a speaker. The sound collection section 164a may have the same configuration as the sound collection section 125a shown in the first embodiment.

In this way, the intercom system 100 can transmit voice to the other party of the communication device using the communication device 1 and the intercom base unit 160a.

The intercom system 100 according to the second embodiment includes a communication device 1 and a communication device that communicates with the communication device 1 and is different from the communication device 1 (for example, another communication device 160a).

In this way, by including the intercom system 100 with the above-mentioned communication device 1, it is possible to provide an intercom system 100 that suppresses the sound to be collected from being blocked by the waterproof body 50.

(Other embodiments)
Although the first and second embodiments have been described above, the present invention is not limited to the above embodiments.

In the above embodiment, the microphone 20, the circuit board 30, the intermediate member 40, and the waterproof body 50 are fixed to the housing 10 by the fastening member 72 pressing the pressing member 71. However, the method is not limited to this. For example, the microphone 20, the circuit board 30, the intermediate member 40, and the waterproof body 50 may be fixed to the housing 10 by pressing the pressing member 71 with another housing different from the housing 10.

For example, in the above embodiment, the intercom base unit 160a is exemplified as the other communication device, but the other communication device may be a mobile terminal such as a smartphone or a tablet terminal, or a personal computer. Further, the other communication device may be a manager's room main unit installed in a manager's room of a collective facility.

Further, in the second embodiment, the intercom system 100 is a system for the collective facility H101, but it may be a system for a detached house.

Other embodiments may be obtained by making various modifications to each embodiment that a person skilled in the art would think of, or may be realized by arbitrarily combining the components and functions of each embodiment without departing from the spirit of the present invention. The present invention also includes such forms.

1, 1A, 1B Telephone equipment (intercom entrance equipment)
10 Housing 11 First housing surface 12 Second housing surface 13 Housing sound hole 15 Housing recess 20 Microphone 30 Circuit board 40 Intermediate member 41 First surface 42 Second surface 43 Intermediate member sound hole 45 Cavity portion 48 Rotation stop portion 50 waterproof body 51 vibrating part 51a annular region 100 intercom system 160a, 160b, 160c other communication devices (intercom base unit)
c1, c2 Drainage ditch RS Sound receiving direction s1 First space s2 Second space Y1 Axis

Claims (12)

a circuit board;
a microphone surface-mounted on the circuit board;
a casing that covers the circuit board and the microphone from a sound receiving side of the microphone;
a waterproof body having a vibrating part, at least a part of which is disposed on the sound receiving side of the microphone, and has a larger area than the microphone when viewed from the sound receiving direction of the microphone;
an intermediate member provided between the microphone or the circuit board and the vibrating section and defining a distance between the microphone and the vibrating section;
Equipped with
By fixing the circuit board to the casing, the intermediate member and the waterproof body are fixed between the casing and the circuit board,
The intermediate member has a cylindrical shape and has a first surface that is a bottom surface and a second surface that is a side surface,
The casing has a concave housing part,
The housing portion has an inner bottom portion and a cylindrical inner portion protruding from the inner bottom portion toward the circuit board,
The inner bottom part of the housing part includes an annular protrusion protruding toward the vibrating part, a housing recess provided inside the protrusion, and a housing recess provided between the protrusion and the inner part. an annular recess;
A first housing surface perpendicular to the sound receiving direction is provided at the tip of the protrusion,
A second housing surface along the sound receiving direction is provided on the inner side of the housing part,
The waterproof body is sandwiched between the first casing surface and the first surface facing the first casing surface, and is sandwiched between the second casing surface and the first surface facing the second casing surface. accommodated in the housing portion while being sandwiched between the two surfaces.
Telephone device. The telephone device according to claim 1, wherein the vibrating section is provided between the microphone or the circuit board and the casing. The intermediate member has a cavity defining a first space existing on the microphone side of the vibrating section,
The communication device according to claim 1 or 2, wherein the housing has a housing recess defining a second space that exists on the opposite side of the vibration section from the microphone. The communication device according to any one of claims 1 to 3, wherein an annular region outside the vibrating portion of the waterproof body is sandwiched between the casing and the intermediate member. The intermediate member has an intermediate member sound hole along the sound receiving direction,
The telephone communication device according to any one of claims 1 to 4 , wherein the intermediate member sound hole communicates with the microphone through or without the circuit board. The housing has a housing sound hole along the sound receiving direction,
The telephone device according to claim 5 , wherein the housing sound hole overlaps the intermediate member sound hole and the vibration section when viewed from the sound receiving direction. The communication device according to claim 6 , wherein the housing sound hole has a smaller area than the vibrating section when viewed from the sound receiving direction. The communication device according to any one of claims 1 to 7 , wherein the intermediate member has a rotation stopper that stops the intermediate member from rotating around an axis perpendicular to the circuit board. The waterproof body has a sheet shape,
The telephone communication device according to any one of claims 1 to 8 , wherein the vibrating section vibrates in the sound receiving direction. The telephone device according to any one of claims 1 to 9 , wherein the vibrating section has a circular shape when viewed from the sound receiving direction. The communication device according to any one of claims 1 to 10 , wherein the casing has a drainage groove for draining water that enters from the outside. A communication device according to any one of claims 1 to 11 ,
An intercom system comprising: a communication device that communicates with the communication device and is different from the communication device.

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