JP2007150631A - Speech unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speech unit that can be downsized and low-profiled, and obtain a sense of the unity as a wiring system when the speech unit is used for a component of functional units in the wiring system. <P>SOLUTION: The speech unit includes a module body 10A for accommodating a speaker SP for outputting sound information transmitted via a wiring and one or more microphones M1 transducing an acoustic signal into an electric signal and transmitting the electric signal via the wiring, and each microphone M1 accommodates an acoustic signal-electric signal transducing section comprising a semiconductor substrate material, a bias drive circuit for applying a bias voltage to the acoustic signal-electric signal transducing section, and an impedance conversion circuit for converting an electric impedance of an output of the microphone in a housing with an electromagnetic shield function. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a communication device used in a wiring system capable of sending information and power simultaneously.

Conventionally, there is a communication device installed indoors with an interphone system or the like, which includes a speaker that outputs sound from a communication device installed in another place, a microphone that inputs sound transmitted to the other communication device, and the like. Yes. (For example, see Patent Document 1)
JP-A-7-183958 (paragraph numbers [0026] [0027], FIG. 1)

  However, in the conventional communication device, even if an electret condenser microphone using a semi-permanent charging phenomenon of a polymer material such as Teflon (registered trademark) is used, the size of the microphone is increased, and the communication device itself is reduced in size and thickness. It was difficult.

  In addition, when this telephone is used as a form of a functional device in a wiring system that is used by connecting functional devices such as switches and outlets installed on the ceiling surface, wall surface, floor surface, etc., to power lines and information lines, It became larger than other functional devices, and it did not give a sense of unity as a system. Furthermore, when using for the above-mentioned wiring system, workability and expandability as a system are also required.

  The present invention has been made in view of the above-described reasons, and the object thereof is to achieve downsizing and thinning, and to obtain a sense of unity as a system even when used as a functional device in a wiring system. An object of the present invention is to provide a communication device that can be used.

  The invention of claim 1 includes a main body that houses a speaker that outputs audio information transmitted via wiring and one or more microphones that convert an acoustic signal into an electrical signal and transmit the electrical signal via the wiring, The microphone includes an acoustic signal-electric signal conversion unit made of a semiconductor substrate material, a bias drive circuit that applies a bias voltage to the acoustic signal-electric signal conversion unit, and an impedance conversion circuit that converts the electric impedance of the output of the microphone. It is characterized by being housed in a housing with a shielding function.

  According to the present invention, since the microphone can be made smaller than the electret condenser microphone by providing the acoustic signal-electric signal converter made of a semiconductor substrate material, the communication device itself can be made smaller and thinner. Even if it is used as a form of a functional device in a wiring system, a sense of unity as a system can be obtained.

  According to a second aspect of the present invention, in the first aspect, the microphone detects an acoustic signal in an audible range.

  According to the present invention, it is possible to constitute an audible range sound detecting means such as a voice.

  According to a third aspect of the present invention, in the first or second aspect, the microphone detects an acoustic signal in an ultrasonic region.

  According to the present invention, the receiving means of the ultrasonic remote controller can be configured.

  According to a fourth aspect of the present invention, in any one of the first to third aspects, an A / D conversion circuit that converts an output of the impedance conversion circuit into a digital signal is housed in a casing having the electromagnetic shielding function. .

  According to this invention, since it converts into a digital signal within the housing | casing provided with the electromagnetic shielding function, the digital signal which suppressed noise can be output.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, at least two of the bias drive circuit, the impedance conversion circuit, and the A / D conversion circuit are configured by a single semiconductor integrated circuit. And

  According to the present invention, it is possible to further reduce the size and thickness.

  The invention of claim 6 provides the directivity of the detection range of the microphones arranged side by side based on the electrical signal output by each microphone when two or more of the microphones are arranged in parallel. It is characterized by comprising means for holding.

  According to the present invention, by detecting only an acoustic signal from a specific direction with high sensitivity, unnecessary sound wraparound from a speaker can be suppressed and howling can be prevented.

  A seventh aspect of the present invention provides the microphone according to any one of the first to fifth aspects, wherein two or more acoustic signal-electric signal converters are arranged in parallel in the housing of the microphone, and the microphone has each acoustic signal-electric signal converter. Based on the output of the unit, there is provided means for imparting directivity to the detection range of the acoustic signal-electric signal conversion unit provided in parallel.

  According to the present invention, by detecting only an acoustic signal from a specific direction with high sensitivity, unnecessary sound wraparound from a speaker can be suppressed and howling can be prevented.

  According to an eighth aspect of the present invention, in any one of the first to seventh aspects, the main body is formed of a synthetic resin, and the microphone is formed on a three-dimensional circuit board having a three-dimensional wiring on the main body. To do.

  According to the present invention, the microphone can be miniaturized and integrated.

  A ninth aspect of the present invention is the module according to any one of the first to seventh aspects, wherein the microphone is a circuit component built-in module in which an insulating resin is interposed in a circuit accommodating layer and sandwiched between a pair of outer wiring pattern forming substrates. It is characterized by being configured.

  According to the present invention, the microphone can be thinned.

  A tenth aspect of the present invention is the electronic device according to any one of the first to ninth aspects, wherein the main body is installed on an indoor ceiling surface, wall surface, or floor surface and is electrically connected to at least one system wiring for transmitting power and information signals. A second connection part for electrically connecting to the first connection part, receiving power supply, and transmitting / receiving an information signal to / from the first connection part; The voice information transmitted through the connecting portion is output, and the microphone transmits an information signal through the second connecting portion, and the microphone is adapted to the stylization of the arrangement and shape of the first connecting portion. The shape of the two connection portions is fixed.

  According to this invention, if the second connection unit is electrically connected to the first connection unit, it is possible to secure a power path and an information path at the same time, and it is not necessary to newly perform wiring work. Workability can be obtained.

  As described above, according to the present invention, it is possible to achieve a reduction in size and thickness, and it is possible to obtain a sense of unity as a system even if the wiring system is used as one form of a functional device.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

(Embodiment 1)
In the system configuration using the communication device 10a of the present embodiment, as shown in FIG. 10, one or a plurality of switch boxes 2 embedded and disposed at appropriate positions in a building are provided, and a leading wall is provided between the switch boxes 2 in the wall surface. The wired power line L1 and the information line L2 are sent and wired, and the power line L1 drawn indoors via the main breaker MB and the branch breaker BB in the wiring board 1 is connected to the switch box 2 at the beginning. The information line L2 is introduced and connected to the external Internet network NT via a gateway GW (with built-in router and hub). Here, the switch box 2 is provided at a high position HP such as an indoor ceiling surface, the switch box 2 is provided at a height position (middle position MP) recommended by a wall switch or the like, and near the foot (low position LP). ).

  These switch boxes 2 are standardized corresponding to a series of mounting frames 4 (see FIG. 11) to which three large-angle, single-module embedded wiring devices standardized by JIS, for example, can be mounted. As shown in FIG. 2, the power line L1 and the information line L2 sent from the wiring board 1 or other switch box 2 are introduced from the upper part as shown in FIG. 2, and the other switch box 2 is introduced from the lower part. A power line L1 and an information line L2 for leading and wiring are derived. The body of the gate device 3 to which the basic function module 8 is connected is attached to each switch box 2 by the attachment frame 4.

  As shown in FIG. 11, the mounting frame 4 is provided with a window hole 4a for mounting an instrument in the center, and the front part of the instrument body to be mounted is fitted from the back into the window hole 4a, and the left and right frame pieces are fitted. The locked body provided on the both sides of the device main body is locked by the locking means provided on the device to fix the device main body. And the attachment screw | thread (not shown) penetrated to the attachment hole 4b provided in the up-and-down frame piece is fastened to the screw hole (not shown) of the switch box 2, and it attaches to the switch box 2 with the instrument main body. Further, when the mounting is performed on the wall panel with the embedded hole opened without using the switch box 2, the wall panel can be clamped with a so-called clip fitting or can be mounted with a wood screw.

  As shown in FIG. 12, the gate device 3 is provided with connection terminal portions 5a and 5b having a quick connection terminal structure and connection terminal portions 5a ′ and 5b ′ for feed wiring on the back surface of the body, and corresponding power lines L1 and information lines. L2 is connected. Further, on the front surface of the body, a power path connection port 6A having a contact portion electrically connected to the sent power line L1, and an information path electrically connected to the sent information line L2. A modular connection port 6 having a connection port 6B is provided as shown in FIG.

  These connection ports 6A and 6B are standardized as a system in terms of the distance between them, the arrangement of internal contact portions, the shape of the opening, and the like. The front surface of the switch box 2 is covered so as to cover the front surface of the body of the gate device 3. Connected portions 7A and 7B of the connector 7 provided on the back surface of the basic function module 8 shown in FIG. 13 attached to the opening side are detachably coupled to the connection ports 6A and 6B.

  The basic function module 8 constitutes a functional device with the extended function module 10 described later, and is a flat module body made of synthetic resin (non-crystalline general-purpose plastic such as ABS) shown in FIGS. 13 and 14A. The circuit shown in FIG. 16 is built in 8A, and by connecting the connected portions 7A and 7B of the connector 7 on the back surface to the connection ports 6A and 6B of the gate device 3, the front opening of the switch box 2 is obtained. In addition, the mounting flange (not shown) is attached to the front surface of the mounting hole 80 which is perforated in the center of the upper portion and the lower portion. It is attached to the switch box 2 via the attachment frame 4 by being inserted from the part side and screwed into a screw hole 4 c provided in the upper and lower frames of the attachment frame 4.

  Further, on the front surface of the module main body 8A, at a position above or below the opening position of the upper and lower mounting holes 80, as shown in FIG. 14A, a wide groove 81a and a narrow width are formed in the width direction of the module main body 8A. A connecting groove 81 comprising a groove 81b is formed to be divided into left and right by a central partition wall 82.

  A half of one side of the synthetic resin coupling body 100 shown in FIG. 14B is fitted into the coupling groove 81 on the left or right side of the partition wall 82 to a position where it contacts the partition wall 82, and the other half of the coupling body 100 is illustrated. As shown in FIG. 15, the basic function module 8 and the extended function module 10 can be mechanically coupled by fitting into a connecting groove 81 that is similarly provided on the extended function module 10 side. The connecting body 100 is provided with a groove 100a in which a partition wall 81c for partitioning the wide groove 81a and the narrow groove 81b is fitted on the back surface, and is inserted so as to straddle both the grooves 81a and 81b. In the basic function module 8, the decorative cover 8 </ b> B is detachably attached from the front side, and in the extended function module 10, the lid 83 is closed so as to be fitted over the connecting groove 81. A certain connected body 100 is held so as not to fall off and is maintained in a connected state. Thus, the connecting body 100 and the connecting groove 81 constitute connecting means for the basic function module 8 and the extended function module 10.

  In the wiring system of the present embodiment, a plurality of types of basic function modules 8 are prepared depending on functions, and the basic function module 8 is a commercial power supply AC supplied via a connected portion 7A as shown in FIG. For transmitting / receiving an information signal transmitted bi-directionally through an information line L2 connected via an AC / DC converter 21 that converts the power to an operating power source + V of an internal circuit composed of a stable DC voltage and a connected portion 7B Transmission unit 22, power supply connectors 9A and 9A 'connected to commercial power supply AC via connected part 7A, and information connector connected to information line L2 via communication transmission part 22 and connected part 7B 9B, 9B ′ and the information signal received by the communication transmission unit 22 are used to perform processing, and from the basic function module 8 to another basic function module 8 Data is exchanged between the arithmetic processing unit 23 that performs data generation processing when data is sent to the extended function module 10 or via the information line L2, and the arithmetic processing unit 23 via the I / O interface 24. The function unit 25 is operated by performing the operation, and these units are supplied with the operating power source + V from the AC / DC converter 21. The configuration of the function unit 25 differs depending on the basic function module 8.

  A male power connector 9A and an information connector 9B are provided on one side of both side surfaces of the module main body 8A of the basic function module 8, and a female power connector 9A 'and an information connector 9B' are provided on the other side. Yes. Then, by connecting the contact pieces of the connected portion 7A to the contact pieces of the power connectors 9A and 9A ′, the commercial power supply AC is supplied even if the extended function module 10 is connected in either direction. To be able to. Further, by connecting the input / output of the communication transmission unit 22 to the contact pieces of the information connectors 9B and 9B ′, the information signal can be exchanged even if the extended function module 10 is connected in either the left or right direction. . The power connectors 9A and 9A ′ are arranged to be biased to one end on both side surfaces of the module body 8A, and the information connectors 9B and 9B ′ are biased to the other side on both side surfaces of the module body 8A. Arranged.

  The power connectors 9A and 9A ′ and the information connectors 9B and 9B ′ are standardized as a system in the arrangement of the internal contact portions, the shape of the openings, and the power connector and information arranged on the same surface. The distance from the connector for the connector is also standardized as a system, and power supply connectors 11A and 11A ′ and information connectors 11B and 11B ′, which will be described later, of the extended function module 10 are detachably coupled.

  Next, in the wiring system according to the present embodiment, a plurality of types of extended function modules 10 are prepared according to functions that operate upon receiving power supply. The extended function module 10 includes a power connector 11A as shown in FIG. , 11A ′, the information connectors 11B, 11B ′, and the commercial power supply AC supplied via any one of the power connectors 11A, 11A ′ are converted into an operating power supply + V of an internal circuit composed of a stable DC voltage. AC / DC converter 31, communication transmission unit 32 that transmits and receives information signals transmitted bidirectionally via information connectors 11 </ b> B and 11 </ b> B ′, and processing by capturing data from information signals received by communication transmission unit 32 To the basic function module 8 or another extended function module 10 from the extended function module 10 or information An arithmetic processing unit 33 that performs data generation processing when sending data via L2 and a functional unit 35 that operates by exchanging data with the arithmetic processing unit 33 via the I / O interface 34 These units are supplied with the operating power supply + V from the AC / DC converter 31. The configuration of the function unit 35 differs depending on the extended function module 10.

  In the extended function module 10, the height of the module body 10A is basically normalized to the same height as the basic function module 8 as shown in FIG. Standardized to an integral multiple of the unit module dimensions.

  Also, a male power connector 11A and an information connector 11B are provided on one side of both sides of the flat module body 10A made of synthetic resin (amorphous general-purpose plastic such as ABS), and a female power source is provided on the other side. Connector 11A 'and information connector 11B' are provided. The power connectors 11A and 11A ′ are biased to one end on both side surfaces of the module body 10A, and the information connectors 11B and 11B ′ are biased to the other side on both side surfaces of the module body 10A. Be placed. These power connectors 11A and 11A ′ and information connectors 11B and 11B ′ are arranged in the same manner as the power connectors 9A and 9A ′ and information connectors 9B and 9B ′ of the basic function module 8, and the arrangement and opening of the internal contact portions. The shape of the unit is standardized as a system, and the interval between the power connector and the information connector arranged on the same plane is also standardized as a system. The power connectors 9A, 9A ′ of the basic function module 8 are standardized. The information connectors 9B and 9B ′ or the power connectors 11A and 11A ′ and the information connectors 11B and 11B ′ of the other extended function modules 10 are detachably coupled.

  Specifically, the male power connector 11A and the information connector 11B are the female power connector 9A 'of the basic function module 8, the information connector 9B', or the female connector of another extension function module 10. Connected to the power connector 11A ′ and the information connector 11B ′, the female power connector 11A ′ and the information connector 11B ′ are the male power connector 9A, the information connector 9B of the basic function module 8, or The other extension function module 10 is connected to the male power connector 11A and the information connector 11B.

  In the module body 10A, the contact pieces of these power supply connectors 11A and 11A ′ are connected to each other, and the power supply connector on one side is fitted to the power supply connector of the adjacent basic function module 8 or the extended function module 10. When the power is received (power reception port), the other power connector is the power supply side (power supply port).

  Further, by connecting the input / output of the communication transmission unit 32 to the contact pieces of the information connectors (information transfer ports) 11B and 11B ′, the basic function module 8 and other extended function modules 10 are connected in either direction. However, the information signal can be exchanged, and the information signal can be exchanged with the basic function module 8 or the extended function module 10 adjacent to both sides.

  Further, the shape of the module main body 10A of the extended function module 10 is such that the back surface is formed into a flat surface as shown in FIGS. The upper and lower positions are provided with a connecting groove portion 81 including a wide groove 81a and a narrow groove 81b for inserting the connecting body 100 in the same manner as the basic function module 8, and a lid portion for opening and closing the connecting groove portion 81. 83 is provided so that the lid 83 is opened when the connecting body 100 is attached or removed, and is closed as described above when the attached state of the connecting body 100 is maintained (FIG. 18 (c). )reference).

  Next, the call device 10a of this embodiment which is one form of the extended function module 10 will be described below. As shown in FIG. 3, the call device 10a includes an AC / DC converter 31, a communication transmission unit 32, an arithmetic processing unit 33, an I / O interface 34, and a functional unit 35 in the module main body 10A, like the extended function module 10. The module main body 10A is provided with a male power connector 11A and an information connector 11B on one side and a female power connector 11A 'and an information connector 11B' on the other side. .

  As shown in FIG. 4, the module main body 10 </ b> A includes a speaker SP, a microphone M <b> 1, a call switch SW <b> 1, an alarm release switch SW <b> 2, an amplification unit 35 a, and echo cancellation units 35 c and 35 d as function units 35. An audio signal transmitted from another room or the like via the information line L2 is amplified by the amplifying unit 35a via the echo canceling unit 35d and then output from the speaker SP. In addition, by operating the call switch SW1, a call can be made, and the audio signal output from the microphone M1 passes through the echo cancel unit 35c and is transmitted to another room or the like via the information line L2. That is, it functions as an intercom that allows two-way calls between rooms.

  Further, when an alarm signal is transmitted from the basic function module 8 or the extended function module 10 having a sensor function installed in the room where the communication device 10a is arranged, or another room via the information line L2, An alarm sound is emitted from the speaker SP, but the alarm sound output can be canceled by operating the alarm cancel switch SW2.

  Hereinafter, the configuration of the speaker SP will be described. As shown in FIGS. 1 (a) and 1 (b), the speaker SP is formed of an iron-based material having a thickness of about 0.8 mm, such as cold-rolled steel plate (SPCC, SPKEN), electromagnetic soft iron (SUY), and has one end opened. The circular support body 72 is provided so as to extend outward from the open end of the yoke 70, and a cylindrical support section 72 a is formed on the outer edge of the support body 72. ing.

  A cylindrical permanent magnet 71 (for example, residual magnetic flux density of 1.39T to 1.43T) formed of neodymium is disposed in the cylinder of the yoke 70, and a dome-shaped diaphragm 73 is provided on the end surface of the support portion 72a. It has been. That is, the outer peripheral edge of the diaphragm 73 is fixed to the end surface of the support portion 72a.

  The diaphragm 73 is formed of a thermoplastic plastic (for example, a thickness of 12 μm to 35 μm) such as PET (PolyEthylene Terephthalate) or PEI (Polyetherimide). A cylindrical bobbin 74 is fixed to the rear surface of the diaphragm 73, and the rear end of the bobbin 74 is formed by winding a polyurethane copper wire (for example, φ0.05 mm) around a paper tube of kraft paper. A voice coil 75 is provided. The bobbin 74 and the voice coil 75 are provided so that the voice coil 75 is positioned at the opening end of the yoke 70, and freely move in the front-rear direction near the opening end of the yoke 70.

  When an audio signal is input to the polyurethane copper wire of the voice coil 75, an electromagnetic force is generated in the voice coil 75 due to the current of the audio signal and the magnetic field of the permanent magnet 71, so that the bobbin 74 is moved back and forth with the diaphragm 73. Visible in the direction. At this time, a sound corresponding to the audio signal is emitted from the diaphragm 73. That is, an electrodynamic speaker SP is formed (for example, a diameter of 20 to 25 mm and a thickness of about 4.5 mm).

  A rib 14 having an L-shaped cross section is formed in an annular shape inside the front surface of the module main body 10 </ b> A that the diaphragm 73 of the speaker SP is opposed to, and from the outer peripheral end of the circular support 72 of the speaker SP to the front side. The protruding end surface of the projecting portion 72b abuts on the mounting portion 14a of the rib 14, the outer surface of the projecting portion 72b is fitted to the inner surface of the projecting portion 14b of the rib 14, and the diaphragm 73 is placed on the front surface of the module body 10A. The speaker SP is positioned in a state of facing from the inside. Further, the outer edge portion of the support 72 is formed in a circular shape and the rib 14 is formed in an annular shape, so that the speaker SP can be easily mounted on the module main body 10A.

  As shown in FIG. 5, the speaker SP positioned by the rib 14 is provided with a mounting screw (not shown) inserted through insertion holes 76a formed in four mounting pieces 76 provided at equal intervals on the outer edge portion. The speaker SP is attached to the front inner side of the module main body 10A by fastening to a screw hole (not shown) on the front inner side of 10A.

  Next, the configuration of the microphone M1 will be described. The microphone M1 is composed of a condenser type silicon microphone, and the acoustic signal-electric signal converter Cm1 has a configuration composed of a semiconductor substrate material as shown in FIGS. 6A and 6B, and detects acoustic signals in the audible range. To do. An upper electrode formed of a polysilicon film, which includes a lower electrode 51 made of a silicon substrate formed on a substrate 57, a vibrating portion 53c, and support portions 53b extended to four locations on the outer periphery of the vibrating portion 53c. 53, a cavity 54a formed between the lower electrode 51 and the upper electrode 53, and an insulating layer 52 made of an SiN film disposed between the lower electrode 51 and the upper electrode 53. The insulating layer 52 covers substantially the entire surface of the lower electrode 51 except that an opening is provided almost directly below the vibrating portion 53 c of the upper electrode 53 and a region for connecting a terminal to the lower electrode 51. A plurality of small holes 53a are formed in the vibration portion 53c. Further, a terminal 55 made of an Au / TiW film connected to the lower electrode 51 is formed in the peripheral portion, and a terminal 55 made of an Au / TiW film connected to the upper electrode 53 is formed on the support portion 53b.

  Furthermore, in the present embodiment, as shown in FIG. 6B, an insertion hole 56 is provided in the lower electrode 51 and the substrate 57 facing substantially the center of the vibration portion 53c, and the cavity 54a is communicated with the outside to vibrate. Used as an exhaust hole when the portion 53c vibrates.

  When vibration corresponding to sound is applied from the outside, the upper electrode 53 that is a vibration film vibrates, and the distance from the lower electrode 51 changes. As a result, the capacitances of both electrodes 51 and 53 change, the amount of charge changes, and current flows from both electrodes 51 and 53 in accordance with the change in the amount of charge. The currents flowing from both electrodes 51 and 53 are converted into digital signals by the circuit shown in FIG. 7 and input to the echo canceling unit 35c.

  As shown in FIG. 7, the microphone M1 includes a constant voltage circuit K1 including a chip IC that converts the operating power source + V (for example, 5V) output from the AC / DC converter 31 (see FIG. 4) into a constant voltage Vr (for example, 12V). In the microphone M1, a constant voltage Vr is applied to the series circuit of the resistor R11 and the acoustic signal-electric signal converter Cm1, and a bias voltage is applied to the acoustic signal-electric signal converter Cm1. That is, the constant voltage circuit K1 and the resistor R11 constitute a bias drive circuit K2.

  The midpoint of connection between the resistor R11 and the acoustic signal-electric signal converter Cm1 is connected to the gate terminal of the junction type J-FET element S11 via the capacitor C11, and the drain terminal of the J-FET element S11 is the operating power supply. The source terminal is connected to the ground via a resistor R12. The J-FET element S11 is for converting the electrical impedance of the output of the microphone M1, and the voltage at the source terminal of the J-FET element S11 is converted into a digital signal by the A / D conversion circuit K4 and then echoed as an audio signal. The data is output to the cancel unit 35c. The capacitor C11 and the J-FET element S11 constitute an impedance conversion circuit K3.

  FIG. 8 is a side cross-sectional view of the microphone M1, and an acoustic signal-electrical signal is provided in a box-shaped casing 59 that is configured by a case 59a that is open on one surface and a cover 59b that covers the opening of the case 59a. A conversion unit Cm1, a bias drive circuit K2, an impedance conversion circuit K3, and an A / D conversion circuit K4 are accommodated. In addition, a sound hole 59c is formed on one surface of the housing 59 that faces the vibration portion 53c (sound collection unit) of the acoustic signal-electric signal conversion unit Cm1.

  The housing 59 has an electromagnetic shielding function, and is formed of, for example, a metal housing or a ceramic housing having a shield pattern on the surface. Further, the housing 59 may be grounded. In particular, by storing the A / D conversion circuit K4 in the casing 59, the digital signal is converted into the digital signal in the casing 59 having an electromagnetic shield function, so that a digital signal with suppressed noise can be output.

  As described above, the microphone M1 is configured by housing the acoustic signal-electric signal conversion unit Cm1, the bias drive circuit K2, the impedance conversion circuit K3, and the A / D conversion circuit K4 in the casing 59 having an electromagnetic shield function. The acoustic signal-electrical signal conversion unit Cm1 (for example, 2 mm on a side and 2.5 mm in thickness) is composed of a capacitor-type silicon microphone made of a semiconductor substrate material, so that a microphone can be used as compared with the case where an electret condenser microphone is used. M1 can be reduced in size and thickness. Therefore, the communication device 10a itself can be reduced in size and thickness, and even when used as a form of a functional device in the wiring system, a sense of unity as a system can be obtained.

  Further, as shown in FIG. 9, if the bias drive circuit K2, the impedance conversion circuit K3, and the A / D conversion circuit K4 are configured by one semiconductor integrated circuit K5, the communication device can be further reduced in size and thickness. . Alternatively, the same effect can be obtained even if any two of the bias drive circuit K2, the impedance conversion circuit K3, and the A / D conversion circuit K4 are configured by one semiconductor integrated circuit.

  The microphone M1 configured as described above is disposed in the box 16 provided on the side of the speaker SP that does not face the diaphragm 73 of the speaker SP, on the inner side of the front surface of the module body 10A, and the vibration portion 53c (collection unit). The sound part) is positioned by the rectangular frame-shaped rib 16a so as to face the front inner side of the module main body 10A. A partition plate 16b is formed from the inner side surface of the box 16 to the rear side of the microphone M1, and a rib 16c having an L-shaped cross section is formed on the back surface of the extended surface 17, so that the amplifying unit 35a, echo canceling The front surface of the IC package 35 i in which the portions 35 c and 35 d are built is placed on the rib 16 a, and the back surface of the IC package 35 i is positioned in contact with the inner surface of the box 16.

  A plurality of sound holes 10B and insertion holes 10C and 10C for exposing the call switch SW1 and the alarm release switch SW2 to the front surface are formed in the front surface of the module main body 10A facing the speaker SP and the microphone M1.

  The digital signal output from the microphone M1 is input to the echo cancellation unit 35c, and the echo cancellation units 35c and 35d store the digital signal from the microphone M1 in a memory and perform digital signal processing on the CPU or DSP. The following processing is performed.

  First, the echo canceling unit 35c (see FIG. 4) takes the output of the echo canceling unit 35d as a reference signal, and performs an operation on the output of the microphone M1, thereby obtaining an audio signal that has circulated from the speaker SP to the microphone M1. Cancel. Further, the echo canceling unit 35d takes the output of the echo canceling unit 35c as a reference signal, and performs an operation on the output of the I / O interface 34, so that the audio signal from the speaker to the microphone at the other party on the other side can be obtained. It also cancels wraparound.

  Specifically, the echo cancellation units 35c and 35d are provided in a loop circuit including a speaker SP-microphone M1-echo cancellation unit 35c-I / O interface 34-echo cancellation unit 35d-amplification unit 35a-speaker SP. By adjusting the amount of loss in the variable loss means (not shown), the loop gain becomes 1 or less to prevent howling.

  Here, the microphone M1 and the IC package 35i are electrically connected via a conductive pattern PT formed on the inner surface of the module main body 10A (see FIGS. 1A and 1B). A method for generating PT will be described below.

  In the present embodiment, the conductive pattern PT is formed using a MID (Molded Interconnection Device) molding substrate technique, and a conductive thin film is formed in a region including a portion where the conductive pattern PT is formed inside the front surface of the module body 10A made of synthetic resin. A plating base electrode made of is formed. The plating base electrode does not need to coincide with the conductor pattern PT, and may include the entire portion where the conductor pattern PT is formed.

  The plating base electrode is patterned by laser irradiation, so that the portion that becomes the conductor pattern PT and the other portion are separated. That is, a part of the plating base electrode is removed along the contour line of the portion that becomes the conductor pattern PT. Next, thickening is performed by electroplating on the portion to be the conductor pattern PT to form the conductor pattern PT, and then the conductor thin film at portions other than the conductor pattern PT is removed by etching. By this procedure, the shape of the conductor pattern PT can be determined by patterning by laser irradiation, and the conductor pattern PT can be finely processed. That is, the conductor pattern PT can be formed precisely. Further, separate power supply lines and signal lines are not required, and the structure can be simplified.

  Further, if the microphone M1 is formed on the three-dimensional circuit board in which the three-dimensional wiring is provided on the inner surface of the module main body 10A using the MID molded substrate technique, the microphone M1 can be miniaturized and integrated.

  Note that the number of microphones is not limited to one, and a plurality of microphones corresponding to the situation may be arranged to perform the same processing as described above.

  For example, as shown in FIG. 2, a basic function module 8b constituting a wall switch for turning on / off a lighting fixture is connected to the gate device 3, and an extended function module having a clock function is provided on the right side of the basic function module 8b. The intercom function can be added to various functional devices such as a wall switch function and a clock function by connecting the communication device 10a to the right side of the extended function module 10b. Alternatively, a new extended function module 10b can be connected to the communication device 10a installed in advance.

  In this case, the power connector 11A ′ and the information connector 11B ′ of the extended function module 10b are installed on the indoor ceiling surface, wall surface, and floor surface and are electrically connected to at least one line of wiring for transmitting power and information signals. The power connector 11A and the information connector 11B of the communication device 10a are supplied with power from the first connection unit, and receive information signals with the first connection unit. It corresponds to a second connection part for giving and receiving. Further, if an extended function module (not shown) having a predetermined function is connected to the right side of the communication device 10a, the power connector 11A ′ and the information connector 11B ′ of the communication device 10a supply power to the extended function module. This corresponds to a third connection unit for exchanging information signals with the extended function module.

  Therefore, the communication device 10a is connected to the power line L1 and the information line L2 that are preliminarily wired in advance through the gate device 3, the basic function module 8, and the other extended function module 10, so that the power path and the information path Can be secured at the same time, and there is no need to perform new wiring work, and the workability is excellent. Further, by using the same information line L2 as that of the basic function module 8 and the other extended function modules 10, it is possible to easily perform interlocking control between the communication device 10a and the basic function module 8 and the other extended function modules 10. Can be expanded and has excellent extensibility.

  The function unit 25 of the basic function module 8b constituting the wall switch for turning on / off the lighting fixture generates the operation switch SW3 and operation data of the operation switch SW3 as shown in FIG. The CPU section 25a has a function of generating data to be sent via the O interface 24, and the operation section of the operation switch SW3 is exposed on the front surface of the decorative cover 8B as shown in FIG.

  Further, as shown in FIG. 20, the functional unit 35 of the extended function module 10b having a clock function generates time data of the timer unit 35f and the timer unit 35f, and sends it to the arithmetic processing unit 33 via the I / O interface 34. A CPU 35e having a function of generating data to be sent and a time display unit 35g for displaying the time based on the time data. The time display unit 35g is exposed on the front surface of the module body 10A as shown in FIG. Yes.

  In addition to the above, the basic function module 8 includes a module having an outlet function, a module having a monitor function, and a module having only a speaker function.

  In addition to the above, the extended function module 10 includes an air conditioner operation controller, an air conditioner temperature setting device, an electric razor using electric power supply, an electric toothbrush, a charger such as a portable audio player, a lighting device, and an air conditioner. And the like having remote control infrared rays. In addition to audio information, there are interphone master and slave units that have a transmission function for video captured by a surveillance camera or the like, and a video monitoring function.

  In addition, as a transmission system of the information signal of the wiring system using the functional device of the present invention, either baseband transmission or broadband transmission may be adopted and any protocol may be used. A pair of audio and video is sent to and from the master unit and slave unit based on JT-H232 packets, and one or more can be operated by operation data from the operation side in the control system. A route control protocol corresponding to unicast and broadcast capable of one-to-one or one-to-N correspondence may be employed, and is not particularly limited, and thus description thereof is omitted. Further, the protocol used between the gate devices 3 and the protocol used in the functional modules 8 and 10 connected to the gate device 3 may be made different, for example, the protocol conversion may be performed by the gate device 3.

  Thus, in using the basic function module 8 constituting the functional device, first, the gate device 3 is first attached to the switch box 2 embedded in the appropriate wall surface of the building via the mounting frame 4 and wired in advance. The power line L1 and the information line L2 are connected. Thereafter, the corresponding connected portions 7A and 7B of the connector 7 of the basic function module 8 are connected to the electric wire connection ports 6A and 6B provided on the front surface portion of the gate device 3, and the basic function module 8 is connected to the gate device. 3 is attached to the attachment frame 4 so as to cover the front surface portion of the frame 3. When the basic function module 8 is attached, the front surface portion protrudes from the wall surface, and both side surfaces are exposed to the indoor side.

  Then, the extended function module 10 is connected to one of the exposed side surfaces of the basic function module 8 by connecting the side surface of one side to the connector, and in this state, the extended function module 10 and the basic function module 8 are connected using the coupling body 100. Connect mechanically. Thereby, the basic function module 8 and the extended function module 10 constitute a functional device. At this time, the back surface of the extended function module 10 is along the side wall surface of the switch box 2. For example, when the wall surface is cross-bonded or the like, the position of the back surface of the extended function module 10 is slightly shifted. In addition, it can be disposed in a state in which the back surface is in close contact with the wall portion, and even if an operation force or the like is applied from the front surface portion of the extended function module 10, the load applied to the connection portion can be reduced.

  Further, when another extended function module 10 is connected to the previously connected extended function module 10, the extended function modules 10 are mechanically connected to each other by the connecting body 100 in a state where the opposing side surfaces are in contact with each other and are connected by connectors. In this way, as shown in FIG. 2, the extended function modules 10 (10a, 10b...) Can be sequentially connected to the sides.

  Since the basic function module 8 can connect the extended function module 10 to both sides, the extended function module 10 may be connected to both sides of the basic function module 8. After the extended function module 10 is connected in this way, the end cover 101 is detachably attached to the side of the connection portion of the extended function module 10 or the basic function module 8 located at both ends, so that the extended function module 10 is attached. Will be completed. When the extended function module 9 is not connected to the basic function module 8, that is, when it is left unused, the end cover 101 is attached to both sides of the basic function module 8.

  The frame composed of the upper and lower sides of the decorative cover 8B of the basic function module 8, the lid 83 provided on the upper and lower sides of the extended function module 10 (including the communication device 10a), and the end cover 101 is standardized by JIS. It has substantially the same shape as the wide handle type switch plate (JIS8316), and it provides a uniform appearance with a wide handle type switch that has already been installed. Note that the shape of the frame is not limited to the shape of the wide handle type switch plate, but if the shape is substantially the same as the plate used for the large-angle continuous wiring apparatus standardized by JIS, It is possible to obtain a uniform appearance with an embedded wiring device such as the above.

  Further, the dimensions of the basic function module 8 and the extended function module 10 in the width direction and the height direction are the plate used for the large-angle continuous wiring apparatus standardized by JIS with the end covers 101 attached to both sides. The basic function module 8 and the extended function module 10 are formed to have the same dimensions, and the thickness dimensions of the basic function module 8 and the extended function module 10 are the same. Can be easily replaced.

  In addition, the number of extended function modules 10 that can be connected to the basic function module 8 is limited by the magnitude of the load applied to the connection site, and is also limited by the power supply capability of the basic function module 8.

  Here, for example, as shown in FIG. 10, the gate device of the switch box 2 provided at a high position HP such as an indoor ceiling surface among one or a plurality of switch boxes 2 which are embedded and disposed at appropriate positions in the building. 3 is connected to a basic function module 8 having a hooking blade connecting portion 60, and the basic function module 8 is connected to an extended function module 9 provided with a human sensor 61 or the like, or a gate device 3 A basic function module 8c having only a speaker SP and having a function for BGM and the like is connected.

  A basic function module 8b constituting a wall switch for turning on / off a lighting fixture is provided in the gate device 3 of the switch box 2 provided at a height position (middle position MP) such as a wall surface recommended by a wall switch or the like. In addition, an extended function module 10b having a clock function and a communication device 10a are connected. Alternatively, the basic function module 8 including the monitor device 64 is connected to the gate device 3 of the switch box 2 in the middle position MP.

  Furthermore, a basic function module 8 having a power outlet 62 is connected to the gate device 3 of the switch box 2 provided in the vicinity of the foot including the floor (low position LP), and an extended function module constituting the foot lamp 63. Or a basic function module 8c having only a speaker SP and having a function for BGM or the like is connected to the gate device 3.

  After the installation work is completed and the system is completed as described above, information signals are exchanged between the corresponding basic function module 8 and the extended function module 10, and if the call device 10a is used, a call in another room is performed. An intercom system is configured with the apparatus 10a, and a telephone call can be made between the two, and alarm notification is performed.

  Further, in this embodiment, no special construction is required for the addition or deletion of the extended function module 10 or the basic function module 8, and therefore, only by connecting the extended function module 10 to the basic function module 8 according to general user preference, Extensibility is ensured.

  Although the gate device 3 used in the present embodiment is attached to the switch box 2 with the attachment frame 4, it is of course possible to attach it directly to the back wall of the switch box 2 and attach the basic function module 8 to the switch box 2.

(Embodiment 2)
As shown in FIG. 21, the present embodiment includes a speaker SP, a microphone M1, a call switch SW1, an alarm release switch SW2, an amplification unit 35a, and echo cancellation units 35c and 35d as the functional unit 25 of the basic function module 8. A call device 8a having the same function as the call device 10a of the first embodiment is configured. In addition, the same code | symbol is attached | subjected to the structure similar to Embodiment 1, and description is abbreviate | omitted.

  As with the basic function module 8, the communication device 8a contains an AC / DC converter 21, a communication transmission unit 22, an arithmetic processing unit 23, an I / O interface 24, and a functional unit 25 in the module main body 8A. The appearance is shown in FIG.

  Also in the communication device 8a of the present embodiment, as shown in FIG. 23, it is arranged on the side of the speaker SP that does not face the diaphragm 73 of the speaker SP inside the front surface of the module body 8A, and the vibration portion 53c ( The sound collecting unit) is positioned by the rectangular frame-shaped rib 16a so as to face the front inner side of the module main body 10A. A partition plate 16b is formed from the inner side surface of the box 16 to the rear side of the microphone M1, and a rib 16c having an L-shaped cross section is formed on the back surface of the extended surface 17, so that the amplifying unit 35a, echo canceling The front surface of the IC package 35 i in which the portions 35 c and 35 d are built is placed on the rib 16 a, and the back surface of the IC package 35 i is positioned in contact with the inner surface of the box 16.

  A plurality of sound holes 8C and insertion holes 8D and 8D for exposing the call switch SW1 and the alarm release switch SW2 to the front surface are formed in the front surface of the module main body 8A facing the speaker SP and the microphone M1.

  Furthermore, the microphone M1 has the same configuration as that of the first embodiment shown in FIGS. 6 to 8, and the microphone M1 is connected to a housing 59 having an electromagnetic shield function in an acoustic signal-electric signal converter Cm1, bias drive. The circuit K2, the impedance conversion circuit K3, and the A / D conversion circuit K4 are accommodated, and the acoustic signal-electric signal conversion unit Cm1 is configured by a capacitor-type silicon microphone made of a semiconductor substrate material, so that an electret condenser microphone is used. Thus, the microphone M1 can be reduced in size and thickness. Therefore, the communication device 8a itself can be reduced in size and thickness, and even when used as a form of a functional device in the wiring system, a sense of unity as a system can be obtained.

  Further, the communication device 8a can be used as a basic function module alone, and if necessary, the extended function module 10 is connected to the side portion via the power connectors 9A and 9A ′ and the information connectors 9B and 9B ′. do it. In this case, the connection port 6 including the power path connection port 6 </ b> A and the information path connection port 6 </ b> B of the gate device 3 is installed on the indoor ceiling surface, wall surface, and floor surface, and transmits at least one system wiring. The connector 7 including the connected portion 7A and the connected portion 7B of the communication device 8a is supplied with power from the first connecting portion, and is connected to the first connection portion. This corresponds to a second connection unit for exchanging information signals with the unit. Further, if an extended function module (not shown) having a predetermined function is connected to the right side or the left side of the communication device 8a, the power connectors 9A and 9A ′ and the information connectors 9B and 9B ′ of the communication device 8a are expanded functions. It corresponds to a third connection part for supplying power to the module and exchanging information signals with the extended function module.

  Therefore, the communication device 8a can simultaneously secure the power path and the information path by connecting to the power line L1 and the information line L2 that are previously wired in the same way via the gate device 3, and it is necessary to newly perform wiring work. No workability and excellent workability. Further, by using the same information line L2 as the other basic function module 8 and the extended function module 10, it is possible to easily perform the interlock control between the communication device 8a and the other basic function module 8 and the extended function module 10. Can be expanded and has excellent extensibility.

(Embodiment 3)
This embodiment is different from the first and second embodiments in that two microphones M1 are provided. As shown in FIG. 24, two microphones M1 and M1 are provided in a box 16 provided inside the front surface of the module main body 10A. As shown in FIG. 25, the digital outputs of the two microphones M1 and M1 are input to the echo cancellation unit 35c via the directivity setting unit 35k.

  In the directivity setting unit 35k, the digital outputs of the two microphones M1 and M1 are processed based on a predetermined algorithm, thereby setting the directivity by the two microphones M1 and M1 to a single directivity limited to the front. . Therefore, by detecting only the acoustic signal from the front with high sensitivity, it is possible to suppress howling from unnecessary sound from the speaker SP to the microphone M1, thereby preventing howling.

  Note that the number of microphones M1 is not limited to two. If there are a plurality of microphones M1, directivity can be set by processing based on a predetermined algorithm as described above. Other configurations are the same as those in the first and second embodiments, and a description thereof will be omitted.

(Embodiment 4)
As shown in FIG. 26, the present embodiment is different from the first and second embodiments in that the microphone M1 includes four acoustic signal-electric signal converters Cm1 in the housing 59. The output of the signal conversion unit Cm1 is input to the echo cancellation unit 35c via the semiconductor integrated circuit K5.

  The semiconductor integrated circuit K5 has the same function as the directivity setting unit 35k of the third embodiment, in addition to the bias drive circuit K2, the impedance conversion circuit K3, and the A / D conversion circuit K4. By processing the output of the conversion unit Cm1 based on a predetermined algorithm, the directivity by the four acoustic signal-electric signal conversion units Cm1 is set to a unidirectionality limited to the front. Therefore, by detecting only the acoustic signal from the front with high sensitivity, it is possible to suppress howling from unnecessary sound from the speaker SP to the microphone M1, thereby preventing howling.

  Note that the number of acoustic signal-electrical signal conversion units Cm1 is not limited to four, and if there are a plurality of acoustic signal-electrical signal conversion units Cm1, directivity can be set by processing based on a predetermined algorithm as described above. Other configurations are the same as those in the first and second embodiments, and a description thereof will be omitted.

(Embodiment 5)
This embodiment is different from Embodiments 1 and 2 in that the microphone M1 is configured by the circuit component built-in module shown in FIG.

  The microphone M <b> 1 is configured as a structure in which a circuit housing layer 90 and the outer wiring pattern forming substrates 91, 91 that are a pair of the circuit housing layer 90 are vertically bonded.

  Here, the circuit accommodating layer 90 includes a bias driving circuit K2, an impedance conversion circuit K3, a semiconductor integrated circuit K5 constituting the A / D conversion circuit K4, peripheral components K6, and a plurality of vias formed of Cu (copper) rectangular parallelepiped columns. The (inner via) 92 is embedded and accommodated in an organic green sheet (OGS) 93 in which a highly filled epoxy resin layer is formed based on, for example, a PET film. Further, the semiconductor integrated circuit K5 and the peripheral component K6 are provided with electrode portions on the front and back surfaces thereof to expose the electrode portions. Further, if the via 92 is used, the process of forming the through wiring in the organic green sheet 93 can be omitted. Each of the outer wiring pattern forming substrates 91 has Cu (copper) wiring patterns formed on both sides of the insulating substrate made of an FR-4 core material having a thickness of 100 μm. It is electrically connected to electrode portions provided on the front and back surfaces of the component K6.

  Furthermore, an organic green sheet 93 is also bonded to the surface of one outer wiring pattern forming substrate 91 that is not in contact with the circuit accommodating layer 90, and a ground layer 94 is formed on the surface of the organic green sheet 93. . The organic green sheet 93 has a recess 95, and an acoustic signal-electric signal converter Cm 1 is disposed in the recess 95.

  Thus, the microphone M1 can be made thin by configuring the microphone M1 with the circuit component built-in module. Other configurations are the same as those in the first and second embodiments, and a description thereof will be omitted.

(Embodiment 6)
In the first to fifth embodiments, the microphone M1 detects an acoustic signal in the audible range, but in the present embodiment, the microphone M1 detects not only an acoustic signal in the audible range but also an acoustic signal in the ultrasonic range. The point which can comprise the receiving means of an ultrasonic remote control differs from Embodiment 1-5.

When the vibration part 53c (see FIGS. 6A and 6B) of the acoustic signal-electrical signal conversion unit Cm1 of the microphone M1 is formed in a circular shape with a uniform thickness b, and the radius of the vibration part 53c is a, The basic resonance frequency fo when the vibration part 53c vibrates in the normal direction is expressed by the following equation. However, E shows the Young's modulus of the vibration part 53c, and (rho) shows Poisson's ratio.
fo = 0.467b × √ {E / ρ (1−ρ ² )} / a ²
The sensitivity characteristic of the condenser microphone is usually required to be uniform, that is, flat in a frequency band lower than the basic resonance frequency fo.

  Here, when the microphone M1 detects an acoustic signal in the audible range, it is only necessary to obtain a flat and sufficient sensitivity in a band of about 50 Hz to 16 kHz that can be heard by a person.

  On the other hand, when the microphone M1 detects an acoustic signal in the ultrasonic range, in order to obtain a flat and sufficient sensitivity in a higher frequency range, the radius a of the vibrating portion 53c may be made smaller than the above formula. For example, a result of a simple simulation of a change in relative sensitivity when the radius a of the vibrating portion 53c is reduced to a1 × 4/5, a1 × 3/5, and a1 × 2/5 with respect to the representative dimension a1. Is shown in FIG. In FIG. 28, the characteristic Y1 has a radius a = a1, the characteristic Y2 has a radius a = a1 × 4/5, the characteristic Y3 has a radius a = a1 × 3/5, and the characteristic Y4 has a radius a = a1 × 2/5. It is a sensitivity characteristic. As described above, as the radius a of the vibrating portion 53c becomes smaller, flat and sufficient sensitivity can be obtained even in a higher frequency band.

  However, by reducing the radius a of the vibration part 53c, the rigidity of the vibration part 53c increases and it becomes difficult to vibrate, so the sensitivity tends to decrease. In order to prevent this decrease in sensitivity, the thickness b of the vibrating portion 53c is reduced in a method in which the bias voltage applied to the acoustic signal-electrical signal conversion unit Cm1 is increased or in the range where the basic resonance frequency fo of the vibrating portion 53c does not decrease. And a method of adjusting a gap between the vibrating portion 53 c and the lower electrode 51. Alternatively, in the case where a plurality of fine holes (not shown) through which air passes are provided in the lower electrode 51, the acoustic characteristics can be adjusted also by a method of controlling the acoustic resistance by the fine holes.

  When the microphone M1 detects an acoustic signal in the ultrasonic range emitted by the ultrasonic remote controller, the arithmetic processing unit 33 generates a control signal for a lighting fixture, an air conditioner, and the like, and the control signal is transmitted through the information line L2. And is transmitted to the air conditioner and the like, and performs on / off control, dimming control, room temperature control and the like of the lighting fixture and the air conditioner. Other configurations are the same as those in the first to sixth embodiments, and a description thereof will be omitted.

  Further, if the microphone M1 is configured so as to be able to detect only an acoustic signal in the ultrasonic range, a functional device having a reception function of the ultrasonic remote controller is obtained.

(Embodiment 7)
In the first to sixth embodiments, a power path and an information path are established by connector connection between the gate device 3, the basic function module 8 (including the communication device 8a), and the extended function module 10 (including the communication device 10a). ing.

  However, in this embodiment, the power path is configured by supplying electric power in a non-contact manner by magnetic coupling instead of connector connection. Specifically, the gate device 3, the basic function module 8, and the extended function module 10 each have a configuration in which a coil is wound around a core instead of a connector, and the cores are magnetically coupled to each other so that the other coil has a low pressure. AC power supply voltage is induced to supply power. Here, by applying an AC power supply having a frequency higher than the commercial frequency to the coil, the transformer configuration by the electromagnetic coupling portion can be reduced in size.

  Further, in the gate device 3, the basic function module 8, and the extended function module 10, an information signal is sent out through E / O conversion, and an information signal is taken in through O / E conversion, whereby an information signal composed of an optical signal is emitted as a light emitting element. Thus, an information path that can be transmitted bidirectionally without contact using the light receiving element is constructed.

(Embodiment 8)
In the first to seventh embodiments, the transmission of power (power supply) and the delivery of information signals are performed in separate systems. However, in this embodiment, the transmission system of the information signals of the entire system is performed on the power line carrier, thereby The road and information path are shared.

  That is, the preceding wiring in each switch box 2 is only the power line L1, and the connection port of the gate device 3 is only the power path connection port 6A of the connection port shown in FIG. The connector 7 (including the communication device 8a) also has only a connected port 7A corresponding to the power path connecting port 6A, and the information connectors 9B and 9B ′ are also omitted. Further, the extended function module 10 (including the communication device 10a) also omits the information connectors 11B and 11B '.

  As shown in FIG. 29, in the communication device 10a, the information signal received by the power line carrier and the PLC modem unit 36 for transmitting the information signal, and the information signal received via the PLC modem unit 36 are received. Are provided between the arithmetic processing unit 33, the functional unit 35, and the functional unit 35 and the arithmetic processing unit 33 for performing data processing of the above and generating data of an information signal transmitted by the power line carrier via the PLC modem unit 36. An I / O interface 34 is provided. The arithmetic processing unit 33, the I / O interface 34, and the function unit 35 have the same functions as those in the first to third embodiments.

  Further, the same configuration as the PLC modem unit 36 is also provided in the gate device 3, the basic function module 8, and the extended function module 10.

  The power line carrier modulation scheme employed in this embodiment may be any of various schemes such as a broadband spread spectrum scheme, a multi-carrier scheme, and an OFDM scheme, and is not particularly described here.

  Thus, in this embodiment, since the power path and the information path are common, the connection port in the gate device 3 is only the power path connection port 6A, and the connector 7 of the basic function module 8 is also one connected portion 7A. Thus, the connector 11 of the extended function module 10 also has only one connected portion 11A, so that the space around the connection is reduced. In addition, the internal circuit of the basic function module 8 or the extended function module 10 does not require the configuration of a communication transmission unit or an information connector, so that the arrangement space in the thin module bodies 8A and 10A can be increased.

  In addition, since a PLC modem part is built in the lighting equipment and air conditioning equipment, it is possible to send information signals directly to the lighting equipment and air conditioning equipment, so it is necessary to provide a function module with an infrared remote control signal transmission function for remote control. Disappears.

(A) (b) It is sectional drawing which shows the attachment state of the speaker of the telephone apparatus of Embodiment 1, and a microphone. It is a partially broken perspective view which shows the arrangement | positioning state of the wiring system using the communication apparatus same as the above. It is a perspective view which shows a communication apparatus same as the above. It is a circuit block diagram of a communication apparatus same as the above. It is a top view which shows a speaker same as the above. (A) (b) It is a block diagram of the acoustic signal-electrical signal conversion part of a microphone same as the above. It is a circuit block diagram of a microphone same as the above. It is side surface sectional drawing of a microphone same as the above. It is another side surface sectional drawing of a microphone same as the above. It is a block diagram of the wiring system using the call apparatus same as the above. It is a front view of the state which attached the gate apparatus same as the above to the attachment frame. It is a perspective view which shows the wiring form to the gate apparatus same as the above. It is a perspective view of the state which removed the basic functional module same as the above from the switch box. (A) is a perspective view of the basic functional module same as above with the decorative cover removed, and (b) is a perspective view of the coupling body. It is explanatory drawing of the connection structure of a basic function module same as the above and an expansion module. It is a circuit block diagram of a basic functional module same as the above. It is a circuit block diagram of an extended function module same as the above. The extended function module same as the above is shown, (a) is a front view, (b) is a side view, and (c) is a side view in a state where a lid is opened and a coupling body is removed. It is a circuit block diagram of the function part of the basic function module which comprises a wall switch same as the above. It is a circuit block diagram of the function part of the extended function module which has a clock function same as the above. FIG. 3 is a circuit configuration diagram of a functional unit of a communication device according to a second embodiment. It is a perspective view which shows the arrangement | positioning state of the wiring system using the communication apparatus same as the above. (A) (b) It is sectional drawing which shows the attachment state of the speaker of the telephone apparatus same as the above, and a microphone. It is sectional drawing which shows the microphone vicinity of the communication apparatus of Embodiment 3. It is a circuit block diagram of a communication apparatus same as the above. It is side surface sectional drawing of the microphone of the communication apparatus of Embodiment 4. 6 is a side cross-sectional view of a microphone of a communication device according to Embodiment 5. FIG. It is a figure which shows the simulation result of the change of the relative sensitivity of the microphone of the communication apparatus of Embodiment 6. FIG. 10 is a circuit configuration diagram of a communication device according to an eighth embodiment.

Explanation of symbols

10A module body 35i IC package SP speaker M1 microphone

Claims (10)

A main body that houses a speaker that outputs audio information transmitted via wiring and one or more microphones that convert an acoustic signal into an electrical signal and transmit the electrical signal via the wiring, the microphone being made of a semiconductor substrate material; A housing provided with an electromagnetic shield function comprising: an acoustic signal-electric signal converter, a bias drive circuit that applies a bias voltage to the acoustic signal-electric signal converter, and an impedance converter that converts the electrical impedance of the microphone output A telephone device characterized by being housed in The call device according to claim 1, wherein the microphone detects an acoustic signal in an audible range. The call device according to claim 1, wherein the microphone detects an acoustic signal in an ultrasonic region. 4. The communication device according to claim 1, wherein an A / D conversion circuit that converts an output of the impedance conversion circuit into a digital signal is housed in a casing having the electromagnetic shielding function. 5. The communication device according to claim 1, wherein at least two of the bias driving circuit, the impedance conversion circuit, and the A / D conversion circuit are configured by a single semiconductor integrated circuit. 6. The apparatus according to claim 1, further comprising means for arranging two or more microphones in parallel and providing directivity to a detection range of the microphones arranged in parallel based on an electric signal output from each microphone. Or a communication device according to claim 1. Two or more acoustic signal-electric signal converters are juxtaposed in a housing of the microphone, and the microphones are arranged in parallel based on outputs of the respective acoustic signal-electric signal converters. 6. The communication device according to claim 1, further comprising means for imparting directivity to the detection range of the conversion unit. 8. The communication device according to claim 1, wherein the main body is made of a synthetic resin, and the microphone is formed on a three-dimensional circuit board having a three-dimensional wiring on the main body. 8. The microphone according to claim 1, wherein the microphone includes a circuit component built-in module in which an insulating resin is interposed in a circuit housing layer and is sandwiched and bonded by a pair of outer wiring pattern forming substrates. Telephone equipment. The main body is electrically connected to a first connection portion that is installed on an indoor ceiling surface, wall surface, floor surface and electrically connected to at least one system wiring for transmitting power and information signals. And a second connection unit for receiving and supplying an information signal to and from the first connection unit, wherein the speaker outputs audio information transmitted through the second connection unit, and the microphone An information signal is transmitted through the second connection part, and the form of the second connection part is fixed in correspondence with the stylization of the arrangement and shape of the first connection part. Item 10. The communication device according to any one of Items 1 to 9.

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