JP2008178076A - Call terminal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a call terminal capable of changing functions without replacing the whole of the call terminal. <P>SOLUTION: The call terminal A has a body module B fixed onto a wall with the rear stored in the wall, and an exposure panel C attached removably to the front side of the body module B. The exposure panel C has a voice I/O section 18 inputting and outputting at least voice and a signal processing section 42 inputting and outputting a sound signal, and can be selected from a plurality of different kinds of exposure panels C. The body module B has: a power terminal section 6 to which a power line is connected; a signal terminal section 7 to which a signal line is connected; a power supply section 39 that is connected to the power terminal 6 and supplies a DC power supply to an internal circuit; and an external interface section 40 connected to the signal terminal section 7. Therefore, the body module B can be shared with the plurality of kinds of exposure panels C. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a call terminal that is attached to a wall and is capable of making a call with a partner terminal.

  Conventionally, an interphone system has been constructed by connecting to a slave terminal (door phone slave) as a counterpart terminal installed outside the house, for example, by using a signal line as this type of telephone terminal. A device (intercom base phone) that can communicate with a side terminal is provided.

  In recent years, there has also been proposed an embedded type telephone terminal that is attached in such a manner that the rear part of the body is embedded in the wall in order to keep the amount of protrusion of the body from the wall surface small (for example, Patent Document 1). reference).

In the call terminal described in Patent Document 1, in order to achieve a uniform appearance with other embedded wiring devices and to reduce the cost of members used for mounting, the embedded terminal is widely used. It can be mounted on a wall using a switch box for a type of wiring apparatus. That is, the telephone terminal is fixed to the switch box using a mounting screw that is screwed into a screw hole provided in the switch box so that the rear part of the telephone terminal body is housed in the switch box. Here, in the telephone terminal of Patent Document 1, since the mounting hole for the mounting screw is provided in the container and the container can be directly fixed to the switch box, the embedded wiring apparatus is fixed to the switch box. Therefore, the mounting frame used for this purpose is unnecessary.
JP-A-6-291818

  By the way, in the above-mentioned call terminal, all the internal circuits for enabling a call with the counterpart terminal are housed in one container, and therefore, when the function of the call terminal is changed even partially. Need to replace the entire call terminal. In particular, when the call terminal is attached with the rear part embedded in the wall, the exchange work of the entire call terminal is troublesome.

  The present invention has been made in view of the above-described reasons, and an object thereof is to provide a call terminal capable of changing functions without exchanging the whole.

  The invention according to claim 1 is a call terminal attached to a wall and capable of making a call with a counterpart terminal, and a main body module fixed to the wall, and an exposure that is detachably attached to the front side of the main body module. And an internal circuit for enabling a call with the other terminal is divided into a first circuit part in the main body module and a second circuit part in the exposed panel. It is characterized by.

  According to this configuration, the internal circuit for enabling communication with the counterpart terminal is divided and provided in the first circuit portion in the main body module and the second circuit portion in the exposed panel. So, the main module and the exposed panel can be replaced separately.For example, when changing the function of the exposed panel, you only need to replace the exposed panel attached to the main module with another type of exposed panel. The main module itself does not need to be replaced. Therefore, the function of the call terminal can be changed without exchanging the entire call terminal.

  According to a second aspect of the present invention, in the first aspect of the invention, the exposed panel includes at least a voice input / output unit that performs voice input / output, and the signal processing unit that performs voice signal input / output is the second circuit. The main body module includes a power supply terminal portion to which a power supply line is connected and a signal terminal portion to which a signal line is connected, and can be selected from a plurality of different types of exposed panels. In addition, the first circuit unit includes a power supply unit connected to the power supply terminal unit to supply DC power to the internal circuit and an external interface unit connected to the signal terminal unit. It is characterized by that.

  According to this configuration, since the main body module can be shared by a plurality of types of exposed panels, it is not necessary to prepare a main body module for each of various types of exposed panels. Therefore, there is an advantage that the cost for development and manufacture of the main body module can be suppressed to a low cost. In addition, since the functions related to the voice processing are integrated in the exposed panel, the functions related to the voice processing in the call terminal can be changed by simply replacing the exposed panel with another type of exposed panel. In addition, since the functions related to audio processing are integrated in the exposed panel, the number of connection lines for electrical connection between the exposed panel and the main body module can be relatively reduced.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the main body module comprises an embedded module that is fixed to the wall so that the rear portion is housed in the wall.

  According to this configuration, since the rear part of the main body module fits in the wall, the main body module and the exposed panel wall surface can be compared with the case where the main body module is fixed with the back surface facing the wall surface without being embedded in the wall. The protrusion amount of can be kept small. Therefore, for example, even when the call terminal is installed in a corridor or the like where the space secured in front of the wall surface is relatively narrow, there is an advantage that the call terminal is unlikely to obstruct traffic.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects, the main body module is fixed to a wall using a mounting screw inserted from a front side into a peripheral portion of the front side, and the exposed panel However, it has the plate part which covers the front side of the said attachment screw integrally, It is characterized by the above-mentioned.

  According to this configuration, since the mounting screw for fixing the main body module to the wall can be covered with the plate portion, the appearance of the communication device is improved as compared with the case where the mounting screw is exposed. In addition, since the plate portion is formed integrally with the exposed panel, the number of parts can be reduced and the workability of installing the call terminal can be improved compared to the case where another member is attached to cover the mounting screw. .

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects of the present invention, the main body module and the exposed panel each have attachment means for attaching the exposed panel to the main body module by engaging with each other. A connecting means for electrically connecting the first circuit portion and the second circuit portion to each other by attaching an exposed panel to the body module is provided.

  According to this configuration, the exposed panel can be attached to the main body module by engaging the attachment means with each other, and the first circuit portion and the second circuit portion can be electrically connected by the connection means. Therefore, the workability is improved as compared with the case where the work of attaching the exposed panel to the main body module and the work of connecting the first circuit part and the second circuit part are performed separately.

  According to a sixth aspect of the present invention, in the fifth aspect of the invention, the main body module can be selected from a plurality of types of main body modules each having a rectangular front surface and different lateral dimensions on the front surface, and the exposed panel. However, it has the mounting means and the connection means at predetermined positions, and the positions of the mounting means and the connection means in various body modules are exposed so that the exposure panel can be mounted on a plurality of types of body modules. It is set according to the position of the panel attachment means and connection means.

  According to this configuration, since the exposed panel can be mounted on a plurality of types of main body modules having different front lateral dimensions, there is no need to prepare a dedicated exposed panel for each of the various main body modules. There is an advantage that the cost required for the development and manufacture of the panel can be kept low.

  The invention of claim 7 is the invention of claim 5, wherein the exposed panel includes a plurality of sets of the same attachment means and the connection means.

  According to this configuration, when the exposed panel is mounted on the main body module, the position of the exposed panel relative to the main body module is changed by changing the mounting means and connecting means to be used among the plurality of sets of attaching means and connecting means of the exposed panel. Can be adjusted. Therefore, for example, when there is a protrusion on the wall surface around the main body module, it is possible to arrange the exposed panel at a position avoiding the protrusion.

  In the present invention, since an internal circuit for enabling a call with a counterpart terminal is divided into a first circuit part in the main body module and a second circuit part in the exposed panel, The main body module and the exposed panel can be exchanged separately, so that the function of the call terminal can be changed without exchanging the entire call terminal.

  In each of the following embodiments, a signal line (not shown) is connected to a slave terminal (not shown) as a counterpart terminal installed outside the house and attached to the wall in the house. The configuration of the call terminal according to the present invention will be described using an interphone system constructed as described above and a parent terminal that can communicate with a child terminal as an example of a call terminal. This call terminal is provided with a video display unit, and displays the video imaged by the camera of the counterpart terminal by being connected to the counterpart terminal provided with a camera (not shown) for imaging the visitor. be able to. In addition to the camera, the handset terminal includes an operation unit that allows operation input, a voice input / output unit that includes a speaker and a microphone and inputs / outputs voice during a call with the call terminal, and an audio signal and a video signal. A signal processing unit that performs input / output and a terminal unit to which a signal line is connected are provided.

(Embodiment 1)
As shown in FIG. 2, the call terminal A of the present embodiment includes a main body module B fixed to the wall so that the rear portion is housed in the wall, and an exposed panel C detachably attached to the front side of the main body module B. And. Hereinafter, the configuration of the call terminal A will be described with the up, down, left, and right directions of the call terminal A attached to the wall.

  As shown in FIG. 3, the main body module B is a container 3 composed of a body 1 formed in a box shape having a rectangular opening on the front surface and a cover 2 covered on the front surface of the body 1. And the first circuit portion 4 in which various electrical components are mounted on the circuit board is housed in the container 3. Furthermore, the main body module B has terminal windows 5 penetrating through two places on the rear wall of the body 1, and a power supply terminal section 6 (see FIG. 1) to which a power line (not shown) for supplying commercial power is connected. ) To be exposed from the one terminal window 5 to the outside of the container 3, and the signal terminal portion 7 to which a signal line (not shown) is connected is connected to the container 3 from the other terminal window (not shown). It is prepared to be exposed to the outside. The body 1 and the cover 2 are connected to a coupling hole 8a provided in a coupling piece 8 projecting rearward from each vertical end of the cover 2 and a coupling claw 9 provided at a front end of both end surfaces of the body 1 in the vertical direction. Are engaged by engaging each other.

  The exposed panel C includes a panel case 10 formed in a thin box shape with a rectangular front surface, and a second circuit portion (not shown) on which various electrical components are mounted is housed in the panel case 10. It has a configuration. Further, the exposed panel C is provided with a transparent display window 11 on a part of the front wall of the panel case 10, so that the image display unit 12 made of a liquid crystal panel can be viewed through the display window 11. In preparation. Here, the panel case 10 has a display window 11 at a position on the left side of the front surface, and a speaker mounting portion 13 having a large number of small holes is disposed on the right side of the display window 11 and the speaker. An operation handle 15 constituting an operation unit 14 (see FIG. 1) is disposed below the attachment unit 13. Further, a microphone hole 16 is formed at the lower left of the display window 11, and a plurality of push buttons 17 constituting the operation unit 14 are arranged in the right and left direction to the right of the microphone hole 16, that is, below the display window 11. ing. In the panel case 10, a speaker 18a (see FIG. 1) is provided at a position corresponding to the speaker mounting portion 13, and a microphone 18b (see FIG. 1) is provided at a position corresponding to the microphone hole 16, and the speaker 18a. The microphone 18b constitutes a voice input / output unit 18 that inputs and outputs voice during a call with the counterpart terminal. In the panel case 10, various setting switches (not shown) and telephone calls that constitute the operation unit 14 together with the operation handles 15 and the push buttons 17 are located at positions corresponding to the operation handles 15 and the push buttons 17, respectively. A switch for starting and ending (not shown) is provided.

  By the way, the main body module B of this embodiment is attached to a wall using the switch box SB for embedded wiring apparatuses installed in the wall, as shown in FIG. The switch box SB is formed in a box shape with a mounting window opened on the front surface, and a mounting screw 20 (see FIG. 8) for fixing the main body module B to the switch box SB on a pair of inner surfaces facing vertically. A plurality of fixture fixing projections 22 having a screw hole 21 for projection) are provided. Here, the fixture fixing protrusion 22 is provided in the mounting window of the switch box SB so that the screw hole 21 is exposed forward from the mounting window of the switch box SB. A rectangular construction hole 23 is opened in a portion corresponding to the switch box SB in the wall material W constituting the wall surface. The construction hole 23 is formed in a size that is smaller than the mounting window of the switch box SB and exposes all the screw holes 21 provided in the fixture fixing protrusion 22.

  The main body module B is attached to the switch box SB from the front through the construction hole 23, and is formed in a shape and size capable of accommodating the rear part of the body 3 in the switch box SB. In the present embodiment, the container body 3 is formed in a size corresponding to the switch box SB to which up to two mounting frames (not shown) can be mounted. The single mounting frame here means three mounting frames standardized in “JIS C8375”. In the following, two single mounting frames are connected in the left-right direction. The dimension is called “for 2 stations”, and the dimension with 3 connected is called “for 3 stations”. That is, the main body module B of the present embodiment is set to a size that can be attached to a double switch box SB in which two instrument fixing protrusions 22 are provided on each of a pair of inner surfaces facing vertically.

  More specifically, the cover 2 has a pair of mounting plates 24 that are integrally extended so as to extend away from the respective vertical edges on the front surface side. The pair of mounting plates 24 are formed over substantially the entire length of the cover 2 in the left-right direction. Each mounting plate 24 has a plurality of box holes 25 (two in this case) through which the mounting screws 20 are inserted in the same manner as the mounting frame used when fixing the embedded wiring device to the switch box SB. Fixing screws for fixing a decorative plate P, which will be described later, to each part formed in the vertical direction and outside the box hole 25 in the vertical direction (that is, the upper side of the upper mounting plate 24 and the lower side of the lower mounting plate 24). A plurality (two in this case) of plate holes 26 (not shown) are formed. Each mounting plate 24 protrudes forward compared to the cover 2. Furthermore, the periphery of each box hole 25 in each mounting plate 24 is formed to be thicker than other portions of the mounting plate 24 so as to suppress deformation of the container 3 when the mounting screw 20 is tightened. The periphery of the box hole 25 is reinforced.

  Here, each of the main body module B and the exposed panel C is provided with attachment means for attaching the exposed panel C to the main body module B by engaging with each other. In the main module B, as shown in FIG. 3, a flange 27 protruding from the front surface of the lower mounting plate 24 and an engagement hole 28 provided in the upper mounting plate 24 are provided as mounting means. The flanges 27 protrude forward from the front surface of the mounting plate 24 and are formed in an L shape by extending the tip part upward, and a plurality (three in this case) are arranged in parallel in the left-right direction. Is provided. The engagement hole 28 is formed by cutting out each end of the mounting plate 24 in the left-right direction.

  In the exposed panel C, a hooking hole 29 that is formed at a position corresponding to each collar piece 27 at a lower end portion on the back surface side and is hooked on the collar piece 27 by inserting a tip end portion of the collar piece 27, and the rear side A pair of engaging claws 19 formed in an L shape by projecting at positions corresponding to the respective engaging holes 28 and extending in a direction in which the tip portions approach each other (see FIG. 11). Are provided as attachment means. With this configuration, the upper end of the exposed panel C is pressed against the body module B side with the tip of the flange 27 of the body module B inserted into the hooking hole 29 of the exposed panel C, and the engaging claw 19 of the exposed panel C is engaged. Is engaged with the engagement hole 28 of the main body module B, the exposed panel C is attached to the main body module B.

  On the other hand, when the call terminal A is simply attached to the switch box SB, a gap is generated between the call terminal A and the wall material W in the construction hole 23. Therefore, a decorative plate P for an embedded wiring device is attached to the telephone terminal A. As shown in FIG. 4, the decorative plate P includes a frame-shaped plate frame 30 that surrounds the periphery of the exposed panel C, and a decorative cover 31 that is attached to the front side of the plate frame 30. The plate frame 30 is fixed by screwing a fixing screw into a plate hole 26 provided in the mounting plate 24, and the decorative cover 31 is provided with a locking claw (not shown) projecting on the back surface. It is attached to the plate frame 30 by being locked in a locking hole (not shown). Thereby, the construction hole 23 is closed by the telephone terminal A and the decorative plate P. Here, a triple decorative plate P is used. In the present embodiment, the protruding amount of the call terminal A from the wall surface is set so that the protruding height of the front surface of the exposed panel C from the wall surface is aligned with the protruding height of the decorative plate P from the wall surface.

  In addition, the exposed panel C has a front surface formed in the same size as a wiring device that can be attached to the triple switch box SB. The exposed panel C constitutes a plate portion 32 (see FIG. 11) in which each end portion in the vertical direction of the panel case 10 is formed to be thinner in the front-rear direction than the other portion by denting the back side. Each plate portion 32 is formed over substantially the entire length of the panel case 10 in the left-right direction, and is abutted against the mounting plate 24 of the main body module B with the exposed panel C attached to the main body module B. Therefore, in a state where the exposed panel C is attached to the main body module B, the plate portion 32 covers the front side of the mounting screw 20. However, the exposed size of the exposed hole C for the plate hole 26 is set smaller than that of the front surface of the main module B so that the exposed hole C is exposed forward even when the exposed panel C is mounted on the main module B. . Here, recesses 33 (see FIG. 11) are formed at positions facing the box holes 25 on the back side of the plate portion 32 according to the shape of the box holes 25.

  In order to prevent the mounting screw 20 from being exposed when the call terminal A is not splittable as in the main body module B and the exposed panel C of the present embodiment, for example, as shown in FIG. In the configuration in which the screw concealment plate 34 to be attached is provided at a portion where the mounting screw 20 is exposed, or after the dedicated mounting bracket 35 is fixed to the switch box SB with the mounting screw 20 as shown in FIG. It is conceivable to adopt a configuration in which the telephone terminal A formed integrally with the body 3 is fixed to the mounting bracket 35 with a fixing screw, and the decorative cover 31 is attached to the plate frame 30. However, in these configurations, it is necessary to use a separate member (screw concealment plate 34) or a dedicated mounting bracket 35 for covering the mounting screws 20, and therefore, in this embodiment, the number of parts is reduced compared to these configurations. There is an advantage that the workability of installing the call terminal A can be reduced and the workability of the call terminal A can be improved.

  By the way, the internal circuit for enabling communication with the other terminal in the call terminal A is divided into the first circuit part 4 in the main body module B and the second circuit part in the exposed panel C. Is provided.

  That is, the first circuit unit 4 in the main body module B includes a power supply board 36 and an interface board 37 that face each other in the front-rear direction as shown in FIG. 3, and a base board 38 that connects the power supply board 36 and the interface board 37. A circuit board is provided. The power board 36 is disposed behind the interface board 37, and the base board 38 is disposed below the power board 36 and the interface board 37. As shown in FIG. 1, the power supply board 36 is connected to the power supply terminal section 6 via the power switch SW, and supplies power supply 39 (AC / DC power supply section 39a and DC / DC power supply section) for supplying DC power to the internal circuit. 39b), and the interface board 37 is connected to the signal terminal unit 7 as shown in FIG. 1 and has an external call detection function for detecting a call from the partner terminal based on at least the line voltage of the signal line. An interface unit 40 is provided. Here, in a state where the power supply line is connected to the power supply terminal unit 6, power is supplied to the internal circuit when the power switch SW is turned on, and power supply to the internal circuit is stopped when the power switch SW is turned off. The power switch SW is mounted on the power supply board 36 and is inserted into the front side of the main body module B through an insertion hole (not shown) penetrating the interface board 37 and a switch hole 41 penetrating the cover 2. Exposed.

  On the other hand, as shown in FIG. 1, the second circuit unit in the exposed panel C is connected to the audio input / output unit 18, the video display unit 12, and the external interface unit 40, and inputs / outputs audio signals and video signals. A signal processing unit 42 and an overall control unit 43 that receives an operation input from the operation unit 14 and controls the operation of each unit of the internal circuit are provided. The signal processing unit 42 includes a sound processing unit 44 having a speaker amplifier that amplifies the sound signal to the speaker 18a and a microphone amplifier that amplifies the sound signal from the microphone 18b, and a demodulation that demodulates the video signal from the partner terminal. A video transmission processing unit 45 that has a circuit and displays video on the video display unit 12 is provided. In the present embodiment, the audio signal and the video signal are multiplexed and transmitted on the signal line. Therefore, the signal processing unit 42 is provided with a demultiplexing unit 42a that is inserted between the audio processing unit 44 and the video transmission processing unit 45 and the external interface unit 40 and separates the multiplexed audio signal and video signal. It has been.

  The first circuit portion 4 and the second circuit portion are a module side contact terminal 46 as a connection means provided on the front side of the main body module B and a panel side as a connection means provided on the back side of the exposed panel C. By bringing the contact terminals 47 into contact with each other, they are electrically connected to each other. As shown in FIG. 3, the module side contact terminal 46 is disposed on the base substrate 38 in the main body module B, and is exposed to the front side of the main body module B through the contact terminal hole 48 provided in the cover 2. The module-side contact terminal 46 and the panel-side contact terminal 47 are arranged at positions where they face each other with the exposed panel C attached to the main body module B. Just by attaching the exposed panel C to the main body module B, When the contact terminal 46 and the panel side contact terminal 47 are in contact with each other, the electrical connection between the first circuit portion 4 and the second circuit portion is completed. Therefore, workability is improved as compared with the case where the work of mounting the exposed panel C on the main body module B and the work of connecting the first circuit unit 4 and the second circuit unit are performed separately.

  By the way, the call terminal A according to the present embodiment can alternatively be selected from a plurality of types of exposed panels C with different exposed panels C, and the main body module B is shared by the plurality of types of exposed panels C. The Specifically, the exposure panel C is appropriately changed according to the function of the call terminal A, such as the audio input / output unit 18, the video display unit 12, the signal processing unit 42, the operation unit 14, and the overall control unit 43. On the other hand, the main unit module B has a common configuration, such as the power supply terminal unit 6, the power supply unit 39, the signal terminal unit 7, and the external interface unit 40, regardless of the function of the call terminal A. Has been. Further, in the plurality of types of exposed panels C, the configuration of the hooking hole 29 and the engaging claw 19 as the attaching means and the configuration of the panel side contact terminal 47 as the connecting means are common specifications.

  Examples of the plurality of types of exposure panels C include, for example, an exposure panel C2 in which a function for recording and reproducing video is added to the exposure panel C1 configured as described above as shown in FIG. There is an exposed panel C3 with a larger or smaller screen size. That is, by selectively selecting and mounting a plurality of types of exposed panels C1 to C3 on the common body module B, a plurality of types of call terminals A1 to A3 having different functions can be realized.

  According to this configuration, since the main body module B can be shared by a plurality of types of exposed panels C, the call terminal A can be obtained simply by replacing the exposed panel C attached to the main body module B with another type of exposed panel C. It is possible to easily change the presence / absence of a recording / playback function, the screen size, etc., and it is not necessary to replace the entire call terminal A. Here, since the exposed panel C is detachably attached to the main body module B, the exposed panel C can be easily replaced. Further, since it is not necessary to prepare the main body module B for each of the various exposed panels C, the cost for developing and manufacturing the main body module B can be kept low while providing the call terminal A having various functions. be able to. In addition, since the functions related to audio processing and video processing are concentrated in the exposed panel C in the present embodiment, the number of connection lines for performing electrical connection between the exposed panel C and the main body module B (that is, module side contact terminals) There is also an advantage that the number of terminals 46 and the panel-side contact terminals 47 can be relatively small.

  Next, a procedure for attaching the above-described call terminal A to the wall will be described with reference to FIG. First, the power supply line and the signal line are inserted and connected to the main body module B, and then the main body module B is fixed to the switch box SB with the mounting screws 20. Then, the plate frame 30 is attached to the main body module B with fixing screws, and then the exposed panel C is attached to the main body module B. Then, when the decorative cover 31 is attached to the plate frame 30, the attaching operation is completed. This mounting operation is similar to the mounting operation of the embedded wall switch, assuming that the main body module B corresponds to the switch body and the exposed panel C corresponds to the switch handle. Similarly, it is relatively easy to install.

  In the example of FIG. 4, a regulating piece 49 protruding upward from the upper end edge of the exposed panel C is provided, and the decorative cover 31 is attached to the regulating piece 49 so that the decorative cover 31 is removed from the plate frame 30. 8, the exposed panel C is structured so that it cannot be detached from the main body module B. However, as shown in FIG. 8, by omitting the regulating piece 49, the exposed panel C can be attached and detached with the plate frame 30 and the decorative cover 31 attached. Possible structures may be employed.

  The operation of the intercom system constructed by using the call terminal A configured as described above together with the counterpart terminal will be briefly described below.

  The call terminal A outputs a ringing sound from the other party terminal through the speaker 18a when the visitor calls from the other party terminal, and displays an image captured by the camera of the other party terminal on the video display unit 12. indicate. When the operation handle 15 for a call is pushed, the call terminal A can enter a call with the other terminal. If the operation handle 15 for a call is pushed again, the call with the partner terminal is terminated.

  In the present embodiment, an example in which the switch box SB is used to attach the call terminal A to the wall has been described. However, the present invention is not limited to this configuration, and a dedicated member other than the switch box SB (for example, embedded wiring) The call terminal A may be attached to the wall by using a pinch fitting used when attaching the appliance.

  Further, in the present embodiment, as the attaching means, the main body module B is provided with the collar piece 27 and the engaging hole 28, and the exposed panel C is provided with the hooking hole 29 and the engaging claw 19, but this configuration is an example. However, it is only necessary that attachment means for attaching the exposed panel C to the main body module B by engaging with each other is provided on each of the main body module B and the exposed panel C. A nail | claw piece and an engagement hole may be provided in the exposed panel C by providing a nail | claw.

(Embodiment 2)
As shown in FIG. 9, the telephone terminal A according to the present embodiment can be selected from a plurality of types of main body modules B1 to B3 having different main body modules B in the horizontal direction (lateral direction). Is different from the call terminal A of FIG.

  In the present embodiment, the exposed panel C has a hooking hole 29 and an engaging claw 19 as attachment means, and a panel side contact terminal 47 as a connection means, all in the center in the left-right direction. On the other hand, the positions of the flanges 27 and the engagement holes 28 as the attachment means and the module side contact terminals 46 as the connection means in the various body modules B1 to B3 are the positions of the hook holes 29 and the engagement claws 19 of the exposed panel C. And the position of the panel-side contact terminal 47.

  As a result, as shown in FIG. 9, since the common exposed panel C can be mounted on a plurality of types of main body modules B1 to B3 having different horizontal dimensions, each of the various main body modules B1 to B3 has a different size. There is no need to prepare the exposed panel C. Therefore, there is an advantage that the cost for developing and manufacturing the exposed panel C can be reduced. In FIGS. 9A to 9C, the same exposed panel C is attached to each of the main body modules B1 to B3 set to dimensions that can be attached to the switch box SB for one station, two stations, and three stations. An example is shown.

  Other configurations and functions are the same as those of the first embodiment.

(Embodiment 3)
In the call terminal A of the present embodiment, as shown in FIG. 10, the exposed panel C includes a plurality of sets of hook holes 29 and engaging claws 19 as the same mounting means and panel-side contact terminals 47 as connection means. The point provided is different from the call terminal A of the first embodiment. Here, in the main body module B, the positions of the flange 27 and the engagement hole 28 as the attachment means and the module side contact terminal 46 as the connection means are the positions of the attachment means (the hook holes 29 and the engagement holes 29) of the exposed panel C. It is set according to the position of the joint claw 19) and each connection means (panel side contact terminal 47).

  Here, the exposed panel C of the present embodiment is formed in the same size as the wiring device that can be attached to the triple switch box SB as in the first embodiment. As shown in FIG. 11, three sets of engaging claws 19) and connecting means (panel-side contact terminals 47) are arranged in parallel in the left-right direction. Therefore, for example, when the exposed panel C is mounted on the main body module B having a size that can be attached to the dual switch box SB, as shown in FIG. A mounting state in which the main body module B is disposed near the left end of the exposed panel C so as to align with the left end edge, and a right end edge of the exposed panel C and a right end edge of the main body module B as shown in FIG. A desired mounting state can be selected from two mounting states, that is, a mounting state in which the main body module B is arranged near the right end of the exposed panel C in an aligned manner.

  That is, according to the configuration of the present embodiment, when the exposed panel C is mounted on the main body module B, the mounting means and the connecting means to be used are changed among a plurality of sets of mounting means and connecting means of the exposed panel C. The position of the exposed panel C with respect to the main body module B can be adjusted. Therefore, for example, when there is a protrusion on the wall surface around the body module B, the exposed panel C can be arranged at a position avoiding the protrusion.

  Further, when the exposed panel C is mounted on the main body module B having a size that can be attached to the single switch box SB, as shown in FIG. Three mounting states, a mounting state in which B is disposed, a mounting state in which the main body module B is disposed near the left end of the exposed panel C, and a mounting state in which the main body module B is disposed near the right end of the exposed panel C Therefore, a desired wearing state can be selected.

  Other configurations and functions are the same as those of the first embodiment.

(Embodiment 4)
As shown in FIG. 12, the telephone terminal A of the present embodiment is provided with an exposed body module B that is fixed to the wall so that the back surface faces the wall surface without being embedded in the wall. Or, it is different from the call terminal A described in any of the third embodiment.

  That is, in the first to third embodiments, the call terminal A that employs the main body module B that is an embedded module that is fixed to the wall so that the rear portion is housed in the wall has been described. An exposed body module B that is attached to the wall without being embedded in the wall is employed.

  In the example of FIG. 12, the main body module B includes a container body 3 whose front surface has a rectangular shape smaller than the exposed panel C and is formed in a thin box shape that is thinner than the exposed panel C. A housing recess 50 formed in accordance with the outer shape of the container 3 of the module B is opened. By fitting the container 3 of the main body module B into the housing recess 50 of the exposed panel C, the exposed panel C is mounted on the body module B. It is attached to. Here, a panel side contact terminal 47 serving as a connection means is disposed on the bottom surface of the housing recess 50, and a module side contact terminal 46 serving as a connection means is provided at a portion facing the panel side contact terminal 47 on the front surface of the body module B. The module-side contact terminal 46 and the panel-side contact terminal 47 come into contact with each other simply by attaching the exposed panel C to the main body module B, so that the first circuit portion 4 and the second circuit portion are electrically connected. Is completed. In addition, a mounting hole (not shown) that engages a mounting claw (not shown) as a mounting means formed on the outer peripheral surface of the main body module B is attached to the inner side surface excluding the bottom surface of the housing recess 50. Formed as a means. In addition, the accommodation recessed part 50 of the example of illustration is open | released below.

  According to the configuration described above, the exposure of the present embodiment can be performed even in a place where the embedded body module B cannot be installed due to restrictions caused by, for example, the wall material or the arrangement of pillars existing in the wall. The main body module B of the type may be installable, and as a result, there is an advantage that the degree of freedom of arrangement of the call terminal A is improved.

  Other configurations and functions are the same as those of the call terminal A described in any one of the first to third embodiments.

  In each of the above-described embodiments, the call terminal A having a function of displaying an image captured by the camera of the counterpart terminal is illustrated as an example of the call terminal A of the present invention. The function of displaying a video on the call terminal A is not essential, and any call terminal A capable of simply making a call with a partner terminal may be used. Further, the call terminal A to which the present invention is applied is not limited to the one that constructs the interphone system together with the slave terminal as in each of the above-described embodiments. For example, a telephone that can make a call with the other party call terminal via a public line It may be.

It is a block diagram which shows the structure of Embodiment 1 of this invention. It is the schematic which shows an attachment state same as the above. It is an exploded perspective view same as the above. It is a disassembled perspective view which shows the example of attachment same as the above. The other structure same as the above is shown, (a) is an exploded perspective view, (b) is a perspective view of an attached state. The other composition same as the above is shown, (a) is an exploded perspective view, (b) is a perspective view of an attachment state. It is the schematic which shows the example of a combination of the exposure panel same as the above, and a main body module. FIG. 2A is a perspective view of a state in which the exposed panel is removed, and FIG. It is the schematic which shows the structure of Embodiment 2 of this invention. It is the schematic which shows the structure of Embodiment 3 of this invention. It is a perspective view which shows the exposure panel same as the above. The structure of Embodiment 4 of this invention is shown, (a) is the perspective view seen from the front side, (b) is the perspective view seen from the back side.

Explanation of symbols

4 First circuit part 6 Power supply terminal part 7 Signal terminal part 18 Audio input / output part 19 Engaging claw (attachment means)
20 Mounting screw 27 Spatula (Mounting means)
28 engagement hole (attachment means)
29 Hook hole (mounting means)
32 Plate part 39 Power supply part 40 External interface part 42 Signal processing part 46 Module side contact terminal (connection means)
47 Panel side contact terminal (connecting means)
A Call terminal B Main module C Exposed panel

Claims (7)

  A telephone terminal mounted on a wall and capable of talking with a partner terminal, comprising a main body module fixed to the wall and an exposed panel detachably attached to the front side of the main body module. An internal circuit for enabling communication with a terminal is divided into a first circuit part in a main body module and a second circuit part in an exposed panel, and is provided.   The exposed panel includes at least a voice input / output unit for inputting / outputting a voice and includes a signal processing unit for inputting / outputting a voice signal in the second circuit unit. The main body module has a power terminal section to which a power line is connected and a signal terminal section to which a signal line is connected, and is connected to the power terminal section and supplies DC power to the internal circuit. The call terminal according to claim 1, wherein the first circuit unit includes a power supply unit to be connected and an external interface unit connected to the signal terminal unit, thereby being shared by a plurality of types of exposed panels.   3. The call terminal according to claim 1, wherein the main body module is an embedded module that is fixed to the wall so that a rear portion is accommodated in the wall. 4.   The main body module is fixed to a wall using a mounting screw inserted from the front side into a peripheral portion of the front surface, and the exposed panel integrally includes a plate portion covering the front side of the mounting screw. The call terminal according to any one of claims 1 to 3.   Each of the main body module and the exposed panel is attached to the main body module by engaging with each other, and the first circuit portion and the second circuit portion are mounted by attaching the exposed panel to the main body module. The call terminal according to any one of claims 1 to 4, further comprising connection means for electrically connecting the circuit units to each other.   The main body module can be selected from a plurality of types of main body modules each having a rectangular front surface and different lateral dimensions on the front surface, and the exposed panel places the attachment means and the connection means in a predetermined position. The positions of the attachment means and connection means in the various body modules are set in accordance with the positions of the attachment means and connection means of the exposed panel so that the exposure panel can be attached to a plurality of types of body modules. The call terminal according to claim 5, wherein   The call terminal according to claim 5, wherein the exposed panel includes a plurality of sets of the same attaching means and the connecting means.

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