JP2008005348A - Audio teleconference system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an audio teleconference system of having fine appearance that can surely send out and pick up sound for each meeting person, when a meeting is to be held in a conference room made of a wide space. <P>SOLUTION: Basic rails 2 are laid under long voice conference devices 1A-1C, and connection rails 3 are laid to connect these basic rails 2. An auxiliary box 4 is mounted on the end face of each of these voice conference device 1A-1C on an I/F 15 side, and an audio cable 300, an AC adapter 130 and power supply cables 510, 511 for connection with the I/F 15 are covered with an outer wall 41. Each basic rail 2 and connection rail 3 are provided with hollow sections 20 and 30, respectively, and the audio cable 300 and various power supply cables, introduced via the auxiliary box 4, are arranged in the hollow sections 20 and 30. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  This invention arranges a plurality of voice conference apparatuses each having a microphone and a speaker in a predetermined space such as the same room, and performs voice communication between the plurality of voice conference apparatuses with each other. The present invention relates to an audio conference system to be realized.

  2. Description of the Related Art Conventionally, various sound emission and collection devices have been devised that are used when a plurality of conference persons hold a conference table and hold a conference.

  For example, Patent Document 1 discloses a two-way communication device that collects voices from the angular direction of a horizontal plane by emitting microphones radially in the horizontal direction and emits the sound in the horizontal direction by a speaker and a reflector. ing.

  However, in such a two-way communication device, when a small number of people, such as 2 to 4 people, hold a conference in a small room, the sound from each conference person is collected at a high level, It is possible to emit a predetermined level of sound to the conference, but when more conferences are held in a large room, the sound collection level for each conference party becomes very low. May not be able to emit a sufficient level of sound.

  For this reason, an audio conference system that is used when a conference is performed in a large space such as a large conference room or conference hall as shown in FIG. 6 has been put into practical use.

FIG. 6 is a diagram showing a voice conference in a conventional large conference room.
In the audio conference in the large conference room 900, a plurality of conference participants 200A to 200D and conference participants 200E to 200H are seated at predetermined intervals in the longitudinal direction of the oval conference table 901. In addition, microphones SMIC1 to SMIC8 and speakers SSP1 to SSP8 are individually arranged for each of the conference participants 200A to 200H. The wiring cables of the microphones SMIC1 to SMIC8 and the speakers SSP1 to SSP8 are appropriately routed individually on the table 901 and in the large conference room 900 and connected to a mixer (not shown).
JP 2004-343668 A

  However, in the audio conference system as shown in FIG. 5 described above, each wiring cable is exposed on the table, and the route to the mixer is also different, which makes the appearance worse and very complicated. Is given to the conferees. Such poor appearance becomes more prominent as the number of participants increases and the number of microphones and speakers increases.

  Accordingly, an object of the present invention is to reliably collect the uttered sound from each conference person at a high level and perform a high level sound emission to each conference person when conducting a conference in a conference room consisting of a large space. It is possible to provide an audio conference system that can be used and has a beautiful appearance.

  The audio conference system according to the present invention includes a plurality of sound emitting and collecting devices, a transmission cable group for transmitting an audio signal between the sound emitting and collecting devices, and a transmission cable disposed below each of the plurality of sound emitting and collecting devices. A plurality of foundation rail members having foundation cavities for accommodating groups and a connection cavity for accommodating transmission cable groups, and adjacent foundation rails such that adjacent foundation cavities and connection cavities are continuous And a connecting rail member installed between the members.

  In this configuration, a foundation rail member is disposed under each sound emission and collection device, and each foundation rail member is coupled by the connection rail member. In other words, each sound emission and collection device is installed on a plurality of foundation rail members connected at predetermined intervals by the connection rail members. And the transmission cable group which communicates an audio | voice signal between each sound emission and collection apparatus is in the space formed by the foundation cavity part formed in the foundation rail member, and the connection cavity part formed in the rail member for connection. Wired. Thereby, the transmission cable group cannot be seen from the outside.

  The sound emission and collection device of the audio conference system according to the present invention includes a long casing, and a plurality of the sound emitting and collecting apparatuses arranged in a straight line along the longitudinal direction on a side surface parallel to the longitudinal direction of the casing. And a speaker array including a plurality of speakers arranged in a straight line along the longitudinal direction on the bottom surface of the housing. Moreover, the basic rail member of this invention is provided with the substantially elongate cylindrical body in which the basic | foundation hollow part of the shape extended along a elongate direction was formed inside. Moreover, the connection rail member of this invention is provided with the substantially elongate cylindrical body in which the connection cavity part of the shape extended in parallel with respect to a elongate direction was formed inside. And the basic rail member and connection rail member of the audio conference system of this invention are characterized by being installed in a straight line along the longitudinal direction.

  In this configuration, the base rail members are arranged in a straight line at predetermined intervals by the connecting rail members, and the sound emitting and collecting device is installed on each base rail member. At this time, the sound emission and collection device is long, and is arranged so that the long direction coincides with the direction in which the basic rail member and the connecting rail member extend. And the transmission cable group is arrange | positioned in the linear cavity part which consists of the fundamental cavity part and connection cavity part which are arrange | positioned in a straight line. In addition, each sound emitting and collecting device uses a horizontal region having a predetermined width centered on a direction perpendicular to the longitudinal direction from the structure of the microphone array and the speaker array as a sound emitting and collecting region.

As a result, even if a conference person is present at a long interval in one direction, the voice from each conference person is reliably collected and the voice of the collected speaker is reliably released to each conference person. In addition, the transmission cable group connecting the sound emission and collection devices cannot be seen from the outside (each conference participant).

  The sound emission and collection device of the audio conference system according to the present invention further includes an input / output terminal connected to the transmission cable group on a side surface perpendicular to the longitudinal direction. Further, the basic rail member of the present invention is formed such that the length in the longitudinal direction is longer by a predetermined value than the length in the longitudinal direction of the sound emitting and collecting device. Moreover, the sound emission and collection device of the present invention and the base rail member disposed on the lower side are installed so that one end in the longitudinal direction coincides. Further, the present invention is characterized in that an insertion port for guiding the transmission cable group to the basic cavity is provided on the top surface of the portion where the basic rail member of the present invention protrudes in the longitudinal direction from the sound emission and collection device.

  In this configuration, the length in the longitudinal direction of the foundation rail member is longer than the length in the longitudinal direction of the sound emitting and collecting apparatus, and one end in the longitudinal direction of the foundation rail member and the sound emitting and collecting apparatus is aligned. Therefore, the other end in the longitudinal direction of the foundation rail member protrudes from the other end in the longitudinal direction of the sound emission and collection device. An insertion port is formed on the top surface of the protruding portion. The sound emitting and collecting apparatus has an input / output terminal connected to the transmission cable group at the other end. As a result, the transmission cable group connected to the sound emission and collection device is inserted into the insertion port formed almost immediately below, whereby the transmission cable group is guided from the input / output terminal to the cavity at a very short distance.

  Moreover, the part which protrudes in the height which corresponds to the top | upper surface of a sound emission / collection apparatus in the top | upper surface side of the part which the basic rail member of the audio conference system of this invention protrudes in a longitudinal direction rather than a sound emission / collection apparatus The cover member which covers the top surface of is installed.

  In this configuration, the transmission cable group from the input / output terminal to the insertion port cannot be seen by providing the cover member at the protruding portion.

  In the audio conference system of the present invention, the bottom surface of the base rail member is a flat plate, and the top surface extends from the position corresponding to the speaker placement position to the end in the width direction along the width direction perpendicular to the longitudinal direction. It is characterized by being formed in a shape that gradually decreases in height.

  In this configuration, the surface of the foundation rail member that faces the sound emission and collection device is gradually moved from the position corresponding to the speaker arrangement position toward the width direction perpendicular to the longitudinal direction. Shape away from the surface. Thereby, the sound emitted from each speaker of the speaker array is effectively propagated to a horizontal region centered on a direction perpendicular to the long direction.

  In the audio system of the present invention, the basic rail member and the connecting rail member have the same external shape.

  In this configuration, since the foundation rail member and the connecting rail member have the same shape, the outer shape does not change discontinuously at the portion connecting the foundation rail member and the connecting rail member, and the overall shape A sense of unity can be obtained.

  According to the present invention, it is possible to reliably emit and collect sound even in a wide space such as a large conference room and with a wide conference space, and to clearly configure the audio conference system with almost no transmission cable group being seen. be able to.

An audio conference system according to a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a conceptual diagram showing a usage situation of the audio conference system 100 of the present embodiment.
FIG. 2 is an explanatory diagram for more specifically showing the configuration of the audio conference system 100 of the present embodiment. FIG. 2A is a side view of a configuration in which the base rail 2 and the connection rail 3 are combined. (B) is the figure which expands the basic rail 2 part shown to (A), and is a figure explaining wiring structure, (C) is the audio conference apparatus 1 (1A-1C) and the basic rail 2 seen from a elongate direction. (D) is the figure which looked at the auxiliary box 4 and the foundation rail 2 from the elongate direction, (E) is the figure which looked at the rail 3 for connection from the elongate direction.

  The audio conference system 100 is installed in a large conference room 900 in which the distance between the conference participants 200 such as an executive conference room is relatively long. In the large conference room 900, an oblong conference table 901 that is extremely long in one horizontal direction is arranged, and the conference members 200A to 200F and 200G to 200L are substantially opposed to the long portions facing each other. I'm seated. The conference table 901 has a shape in which a top plate is installed in the peripheral portion and no top plate is installed inside the peripheral portion. The audio conference system 100 is installed in this empty space. At this time, the legs 902 are installed below the base rails 2 and the connection rails 3 of the audio conference system 100.

FIG. 3 is a side view showing an arrangement state of the audio conference system 100.
Each base rail 2 and connection rail 3 are supported at the height of the top plate of the conference table 901 by the legs 902. Thereby, each audio conference apparatuses 1 </ b> A to 1 </ b> C are arranged above the top plate of the conference table 901.

  The audio conference system 100 is a long audio conference device (corresponding to “a sound emission and collection device” of the present invention) 1A to 1C capable of emitting and collecting sounds, and below the audio conference devices 1A to 1C. A plurality of foundation rails 2 and connecting rails 3 are provided. Then, by connecting the long connection rails 3 in the same manner as the long basic rails 2 in a straight line, and placing the audio conference apparatuses 1A to 1C on the respective basic rails 2, a long shape is obtained. The audio conference system 100 is configured. At this time, the audio conference system 100 has its own longitudinal direction parallel to the longitudinal direction of the conference table 901, that is, the arrangement direction of the conference participants 200A to 200F (the arrangement direction of the conference participants 200G to 200L). Installed. Further, the length Lrb in the longitudinal direction of the foundation rail 2 is set to be longer than the length Lp in the longitudinal direction of the audio conference apparatus 1. For example, when the length Lp of the audio conference apparatus 1 is 750 mm, the length Lrb of the base rail 2 is set to 1000 mm.

  An input / output I / F 15 is installed on one end face in the longitudinal direction of each of the audio conference apparatuses 1A to 1C, and the audio conference apparatuses 1A to 1C are arranged on a surface facing the end face on which the input / output I / F 15 is installed. The end surface of the base rail 2 and the end surface of the foundation rail 2 are arranged to coincide with each other. Thereby, the end face of the input / output I / F 15 side of the audio conference apparatuses 1A to 1C does not coincide with the end face of the corresponding basic rail 2, and the basic rail 2 protrudes by a predetermined length in the longitudinal direction from the audio conference apparatus 1. It becomes the shape. For example, if it is the above-mentioned dimension, the foundation rail 2 will protrude 250 mm in a elongate direction. An auxiliary box 4 is installed on the protruding portion.

  Further, a switch box 5 is installed at one end of the audio conference system 100 (in FIG. 1, the end on the audio conference apparatus 1A side).

  The audio conference apparatus 1 includes a long casing 11, and leg portions 12 are installed at lower portions of both ends in the long direction. In addition, an input / output I / F 15 is installed at one end in the longitudinal direction. The input / output I / F 15 includes an audio input / output terminal, a DC power input terminal, and a network connection terminal, although a specific example is not illustrated. Prepare. The audio conference apparatus 1 includes an operation unit 14 on the top surface close to one end side of the housing 11. The audio conference apparatus 1 includes microphone arrays MA in which a plurality of microphones are arranged at predetermined intervals on both side surfaces of the casing 11 along the longitudinal direction, and on the bottom surface of the casing 11 along the longitudinal direction. A speaker array SPA in which a plurality of speakers are arranged at predetermined intervals is provided. These microphone array MA and speaker array SPA are covered with a mesh-like cover 13. The audio conference apparatus 1 operates by being supplied with DC power from the AC adapter 130 connected to the DC power input terminal.

  The audio conference device 1 controls the sound output from the outside via the input audio cable 302 and the input / output I / F 15 and emits the sound from each speaker of the speaker array SPA, thereby being present at the device itself. Communicating the speech of the conference device of the other device to the conference device. In addition, the audio conference apparatus 1 picks up the utterance sound of the conference person of the own apparatus with a plurality of microphones of the microphone array MA, and cancels the echo to generate an audio signal. Then, the audio conference apparatus 1 outputs the generated audio signal to the external audio conference apparatus 1 via the input / output I / F 15 and the output audio cable 301. At this time, each of the audio conference apparatuses 1A to 1C performs sound emission control and sound collection control, thereby emitting sound only to a preset conference person and collecting only the voices of these conference persons. For example, in the example of FIG. 1, the audio conference apparatus 1A emits and collects sound to the conference participants 200A, 200B, 200G, and 200H close to the own apparatus, and the audio conference apparatus 1B includes the conference participants 200C, 200D, 200I. , 200J, and the audio conference apparatus 1C emits and collects sound to the conference participants 200E, 200F, 200K, and 200L.

  The basic rail 2 has a long shape that is longer than the voice conference device 1 by a predetermined length, and includes a flat bottom wall 21B and a top wall 21A having a circular cross section perpendicular to the long direction. Thereby, the foundation rail 2 has the cylindrical hollow part 20 in the elongate direction enclosed by the top wall 21A and the bottom wall 21B. Further, the base rail 2 includes a support column 22 that supports the audio conference apparatus 1 with a predetermined distance above the top wall 21 </ b> A. The support pillars 22 do not need to be installed on the entire surface in the longitudinal direction, and are installed only at positions corresponding to the legs 12 of the audio conference apparatus 1, for example.

  An outlet 410 is installed at one end of the base rail 2 in the longitudinal direction. A plug 420 is connected to the outlet 410 via a power cable 400 extending in the longitudinal direction via the hollow portion 20. The plug 420 is disposed at the other end of the foundation rail 2 (the end opposite to the end where the outlet 420 is installed).

  An outlet 23 is also installed on the top wall 21 </ b> A of the projecting region near one end of the foundation rail 2, and this outlet 23 is also connected to the plug 420 by the power cable 400.

  A cable insertion hole 24 is formed in the vicinity of the installation position of the outlet 23 on the top wall 21A. The cable insertion hole 24 allows the audio cable 300 (301, 302) connected to the audio conference apparatus 1 to be inserted therethrough.

  The connecting rail 3 includes a flat bottom wall 31B and a top wall 31A having a circular cross section perpendicular to the longitudinal direction. Thereby, the connecting rail 3 has a cylindrical hollow portion 30 in the longitudinal direction surrounded by the top wall 31A and the bottom wall 31B. The length Lrc in the longitudinal direction of the connection rail 3 is the same as the length Lrb in the longitudinal direction of the foundation rail 2. That is, the connecting rail 3 has substantially the same shape as the basic rail 2 except for the support pillar 22, the outlet 23, and the cable insertion hole 24.

  The auxiliary box 4 includes an arch-shaped outer wall 41 whose outer shape is substantially the same except that the length in the longitudinal direction is different from that of the audio conference apparatus 1, and the outer wall 41 is installed in accordance with the foundation rail 2. The long length of the auxiliary box 4 is set to be the same as the difference in length between the length Lrb of the base rail 2 and the length Lp of the voice conference device 1. As a result, the length in the longitudinal direction of the long external body composed of the audio conference apparatus 1 and the auxiliary box 4 coincides with the length in the longitudinal direction of the base rail 2 to form a unit unit of the audio conference system 100. be able to. Further, the auxiliary box 4 includes a shelf 42 on which the AC adapter 130 is placed in the hollow portion 40 surrounded by the outer wall 41.

  The switch box 5 has an arch-shaped outer wall 51 whose outer shape is substantially the same only in the length in the longitudinal direction with respect to the audio conference apparatus 1 and only the length in the length direction with respect to the connection rail 3. A switch box rail 50 having a different outer shape is provided. Further, the switch box 5 includes an end face wall 52 at one end in the longitudinal direction. A switch 53 is installed on the top surface of the outer wall 51 of the switch box 5, and an outlet 501 is installed on the side facing the end wall 52 of the switch box rail 50. The switch 53 and the outlet 501 are connected by a power cable 500, and a power cable 502 for external connection is connected to the switch 53. The external connection power cable 502 is guided to the outside through an insertion hole provided in the end face wall 52.

  Next, the connection configuration of the entire audio conference system will be described. An output audio cable 301 and an input audio cable 302 are connected to audio connection terminals of the input / output I / F 15 of each audio conference apparatus 1 (1A to 1C). In general, the audio cable 300 is led to the hollow portion 20 of the foundation rail 2 through the cable insertion hole 24. An AC adapter 130 is connected to the DC power supply terminal of the input / output I / F 15 via a power cable 510. The power cable 511 of the AC adapter 130 is connected to an outlet 23 installed on the top surface of the foundation rail 2. The audio cable 300, the power cable 510, the AC adapter 130, and the power cable 511 are hidden from the outside by the auxiliary box 4.

  The audio cable 300 guided to the hollow portion 20 of the base rail 2 passes through the hollow portion 30 of the connection rail 3 and the hollow portion 20 of the adjacent base rail 2 (not shown), and the cable insertion hole 24 of the adjacent base rail 2. To the audio connection terminal of the adjacent audio conference apparatus 1. For example, the audio cable 300 connected to the audio conference apparatus 1A is connected to the audio conference apparatus 1B through the auxiliary box 4, the basic rail 2, the connection rail 3, the basic rail 2, and the auxiliary box 4. The The audio cable 300 connected to the audio conference apparatus 1B is connected to the audio conference apparatus 1C through the auxiliary box 4, the basic rail 2, the connection rail 3, the basic rail 2, and the auxiliary box 4. The Thereby, the audio conference apparatuses 1A to 1C are serially connected with respect to the audio signal. When such a connection is made, each of the audio conference apparatuses 1A to 1C mixes and outputs the collected sound signal of its own apparatus with respect to the input audio signal. As a result, the voice sounds can be communicated with each other between the audio conference apparatuses 1A to 1C.

  The plug 420 of the connection rail 3 is connected to the outlet 410 of the base rail 2, and the plug 420 of the adjacent base rail 2 is connected to the outlet 410 of the connection rail 3 (not shown). Further, the plug 420 of the adjacent foundation rail 2 is connected to the outlet 510 of the switch box 5, and the external connection power cable 501 of the switch box 5 is connected to the outlet installed in the room. In this state, when the switch 53 of the switch box 5 is turned ON, AC power is supplied to the AC adapter 130 installed in each auxiliary box 4, and DC power is supplied to each of the audio conference apparatuses 1 </ b> A to 1 </ b> C corresponding to the AC adapter 130. Supply. Thereby, power can be simultaneously supplied to each of the audio conference apparatuses 1A to 1C constituting the audio conference system 100.

  These power cables and audio cables are not visible from the outside due to the base rail 2, the connection rail 3, the auxiliary box 4, and the switch box 5. Therefore, even when a plurality of audio conference apparatuses are used in such a large conference room, the audio conference system 100 with a beautiful appearance can be realized. Furthermore, as described above, by installing an outlet and a plug in advance, the audio conference system 100 can be configured without complicated connection processing.

  Further, as described above, by unifying the length of the foundation rail 2 and the length of the connection rail 3, the number of the foundation rails 2, that is, the number of the audio conference apparatuses 1 and the number of the connection rails 3, Can be easily set according to the size of the conference room.

Next, the audio conference system according to the second embodiment will be described with reference to the drawings.
FIG. 4 is a conceptual diagram showing the usage status of the audio conference system 100 ′ of this embodiment.
FIG. 5 is an explanatory diagram for more specifically showing the configuration of the audio conference system 100 ′ of the present embodiment.
In the audio conference system 100 ′ of the present embodiment, the audio conference apparatuses 1 </ b> A to 1 </ b> C, the basic rail 2, the connection rail 3, the auxiliary box 4, and the switch box 5 have the same structure. Description is omitted except for.

  The audio conference system 100 ′ includes a mixer 6 along with the audio conference apparatuses 1 </ b> A to 1 </ b> C, the base rail 2, the connection rail 3, the auxiliary box 4, and the switch box 5. The mixer 6 is connected to each of the audio conference apparatuses 1A to 1C by an audio cable 300, and is connected to a room outlet by a separate dedicated power cable. The power cable of the mixer 6 may be connected to the outlet of the switch box 5. In the case of such a configuration, the audio cable 300 connected to each of the audio conference apparatuses 1 </ b> A to 1 </ b> C is connected to the mixer 6 through the auxiliary box 4, the basic rail 2, and the switch box 5. At this time, as shown in FIG. 3, the audio cable 300 from the audio conference apparatuses 1 </ b> B and 1 </ b> C other than the audio conference apparatus 1 </ b> A closest to the mixer 6 passes through the connection rail 3 between the basic rails 2.

  In the case of such a configuration, the audio conference apparatuses 1A to 1C are connected in parallel to the mixer 6, and the mixer 6 mixes the audio signals from the audio conference apparatuses 1A to 1C, so that the audio conference apparatuses 1A to 1C are mixed. A sound emission signal is output to 1C. At this time, the mixer 6 generates a sound emission signal that does not include the sound collected by the audio conference apparatus or a sound emission signal with a reduced volume for the audio conference apparatus that outputs the sound emission signal. Thereby, each audio conference apparatuses 1A to 1C can communicate each other's voices.

  Even in such a case, since the audio cable and the power cable cannot be seen from the conference participant, it is possible to realize the audio conference system 100 ′ having a beautiful appearance.

  In each of the above-described embodiments, an example in which there are few components when realizing the audio conference apparatus of the present invention has been shown. However, a howling canceller or the like may be connected to each audio conference apparatus 1. In this case, an auxiliary box for a howling canceller may be newly provided. In this case, the shape of the auxiliary box for the howling canceller may be similar to the shape of the auxiliary box 4 described above. Like the auxiliary box 4, the auxiliary box is arranged in the corresponding audio conference device 1 and the auxiliary box 4, for example, connected. What is necessary is just to install on the rail 3 for work. Such a howling canceller is installed as necessary, and the audio conference apparatus may be provided with a howling cancel function.

  In each of the above-described embodiments, the auxiliary box 4 is provided with the mounting shelf 42 for the AC adapter 130. However, a power outlet or the like may be provided on the top surface of the auxiliary box 4. Thereby, a power supply can be easily obtained when each conference person holds a conference while using an electronic device such as a personal computer.

  In the above description, the connecting rail 3 and the base rail 2 are set to the same length, but may be set to different lengths. Furthermore, a structure in which the length of the connecting rail 3 is variable may be used.

  Moreover, although the structure which connects between the base rails 2 by the one connection rail 3 was shown in the above-mentioned description, you may connect between the base rails 2 via the some connecting rail 2. FIG. By using such a configuration, it is possible to flexibly cope with changes in the sound emission and collection environment depending on the situation of the conference room and the seating position of the conference person.

  In the above description, the audio conference system used for the audio conference in one conference room is shown. However, a network connection terminal may be provided in each audio conference device and connected to an external network using a LAN cable or the like. it can. In this case, the audio conference system of the above-described embodiment is recognized as one audio conference apparatus on the network, and a plurality of normal audio conference apparatuses are simultaneously connected to the single audio conference apparatus via the network. Can do. Even in such a network connection, the LAN cable is arranged in the auxiliary box, the foundation rail, and the connection rail, so that a sound conference system with a beautiful appearance can be maintained.

It is a conceptual diagram which shows the utilization condition of the audio conference system 100 of 1st Embodiment. It is explanatory drawing for expressing the structure of the audio conference system 100 of 1st Embodiment more concretely. 1 is a side view showing an arrangement state of an audio conference system 100. FIG. It is a conceptual diagram which shows the utilization condition of the audio conference system 100 'of 2nd Embodiment. It is explanatory drawing for demonstrating more concretely the structure of the audio conference system 100 'of 2nd Embodiment. It is a figure which shows the mode of the audio conference in the conventional large conference room.

Explanation of symbols

100,100'-voice conference system, 1 (1A-1C) -voice conference device, 2-base rail, 3-connection rail, 20,30-hollow part, 4-auxiliary box, 5-switch box, 300, 301,302-Audio cable, 400,500,502,510,511-Power cable, 410,501,23-Outlet

Claims (6)

A plurality of sound emission and collection devices;
A group of transmission cables for transmitting audio signals between the sound emission and collection devices;
A plurality of foundation rail members arranged on the lower side of each of the plurality of sound emission and collection devices, and having a foundation cavity for accommodating the transmission cable group;
A connection rail member provided between the adjacent basic rail members so that the adjacent basic cavity portion and the connection hollow portion are continuous, including a connection hollow portion that accommodates the transmission cable group,
Voice conference system with The sound emission and collection device includes a long casing, and a microphone array including a plurality of microphones arranged in a straight line along the longitudinal direction on a side surface parallel to the longitudinal direction of the casing; A speaker array comprising a plurality of speakers arranged in a straight line along the longitudinal direction on the bottom surface of the housing;
The foundation rail member includes a substantially elongated cylindrical body in which the foundation cavity having a shape extending along the longitudinal direction is formed.
The connection rail member includes a substantially elongated cylindrical body in which the connection cavity portion having a shape extending in parallel with the longitudinal direction is formed,
The audio conference system according to claim 1, wherein the base rail member and the connection rail member are installed in a straight line along the longitudinal direction. The sound emission and collection device includes an input / output terminal connected to the transmission cable group on a side surface perpendicular to the longitudinal direction,
The base rail member has a length in the longitudinal direction that is longer by a predetermined value than a length in the longitudinal direction of the sound emitting and collecting device.
The sound emitting and collecting device and the base rail member disposed on the lower side are installed so as to coincide with one end in the longitudinal direction,
The insertion port which guides the said transmission cable group to the said basic | foundation cavity part is installed in the top | upper surface of the part where the said basic rail member protrudes in a longitudinal direction rather than the said sound emission and collection device. 2. The audio conference system according to 2.   On the top surface side of the portion where the base rail member protrudes in the longitudinal direction from the sound emitting and collecting device, the top surface of the protruding portion is covered at a height matching the top surface of the sound emitting and collecting device. The audio conference system according to claim 3, wherein a cover member is installed.   The bottom surface of the base rail member has a flat plate shape, and the top surface gradually increases in height from the position corresponding to the speaker placement position toward the end in the width direction along the width direction perpendicular to the longitudinal direction. The audio conference apparatus according to any one of claims 2 to 4, wherein the audio conference apparatus is formed in a shape with a low height.   The audio conference system according to claim 1, wherein the basic rail member and the connecting rail member have the same outer shape.

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