JP2001146136A - Hands free call device for automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the generation of howling, improve a fitting property and facilitated in wiring without giving the uncomfortableness to a driver. SOLUTION: A hands free call device to be connected to a portable telephone or a mobile telephone is formed of a receiver speaker 3 arranged on the right side of a head rest 2, a calling microphone 4 arranged on the left side of the head rest 2, and a base 5 for holding the speaker 3 and the microphone 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hands-free communication device for a vehicle for performing hands-free communication in a vehicle.

[0002]

2. Description of the Related Art Conventionally, as a hands-free communication device for a vehicle of this type, a speaker is provided near a headrest and a microphone is provided on a sun visor to perform hands-free communication. (JP-A-1-247237). In this device, a speaker is provided near the headrest,
The volume can be reduced, and howling can be reduced.

[0003] However, since the speaker and the microphone are provided at locations far apart from each other, such as the headrest and the sun visor, there is a problem in the mounting property, and there is a problem in routing the wiring from the speaker and the microphone.

There is also a headset type which has a microphone and a speaker and is worn by the driver. However, this type has a problem that the wearing causes the driver to feel uncomfortable.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide an automobile hands-free communication device that can reduce the occurrence of howling and does not cause a driver to feel uncomfortable.

Another object of the present invention is to improve the mountability.

Another object of the present invention is to improve the layout of wiring.

[0008]

According to the first aspect of the present invention, a speaker (1) is provided at one of the right side and the left side of the headrest (2) at the upper position of the backrest (1) of the seat of the automobile. 3) is arranged, and a microphone (4) is arranged on the other side.

By arranging the speaker (3) on one side of the headrest (2) in this manner, the volume of the speaker (3) can be reduced, so that howling can be reduced. Further, by disposing the microphone (4) on the other side of the headrest (2), acoustic coupling between the speaker (3) and the microphone (4) can be reduced, and howling can be further reduced. it can.

The speaker (3) and the microphone (4) are arranged above the backrest (1) and are not worn by the driver, so that the driver does not feel uncomfortable.

The above-mentioned speaker (3) and the microphone (4) can be arranged on the upper surface of the backrest (1) as in the second aspect of the present invention. In this case, the loudspeaker (3) and the microphone (4) are installed at positions where they do not protrude from the upper surface of the backrest (1) of the seat to the occupant's seating side, as in the invention described in claim 3. Is preferred. Further, the speaker (3) and the microphone (4) may be built in a headrest (2) as in the invention according to claim 4.

According to the fifth aspect of the present invention, a base (5) is provided on an upper surface of a backrest (1) of a vehicle seat, and a speaker (3) is provided on one side of a headrest (2). The microphone (4) is arranged on one side of the headrest (2).

Thus, the hands-free communication device for a vehicle can be detachably attached to a vehicle seat.

More specifically, the base (5) is connected to the stay (2a,
2b) and can be installed on the upper surface of the backrest (1). For example, as in the invention described in claim 7, the base (5) can be moved by passing the stays (2a, 2b) of the headrest (2) through the holes (5a, 5b) provided in the base (5). It can be held on the stays (2a, 2b).

According to an eighth aspect of the present invention, the base (5) includes a speaker (3) and a microphone (4) from substantially the center of one side in the same direction as the left-right direction of the backrest (1). )
If the wiring (6) is taken out to the outside, it can be easily connected to a mobile phone or a car phone regardless of whether the vehicle is a right-hand drive vehicle or a left-hand drive vehicle.

According to a ninth aspect of the present invention, the wiring (6) from the microphone (4) and the speaker (3) is
If it is taken out through the inside of the base (5), the appearance of the device can be improved.

Further, the base (5) is not limited to one, and may be divided into first and second bases (51, 52) as in the tenth aspect of the present invention. .

Further, the hands-free communication device for an automobile is not limited to the one which is detachable as in the invention of claim 5, but is also a backrest (1) as in the invention of claim 11 Or fixed to the headrest (2) as in the twelfth aspect of the present invention.

An amplifying device (1) for amplifying a reception signal
0), the speaker (3) is built in the pedestal (31) of the speaker (3) as in the invention of claim 14, Alternatively, if the amplifying device (1) is incorporated in the base (5) as in the invention according to claim 15,
0) can be eliminated from being bothersome.

Further, when a wireless communication device (11) for transmitting and receiving a transmission signal and a reception signal wirelessly to and from the outside is provided, the wireless communication device (11) is built in the speaker (3) according to the invention of claim 16, or If the speaker (3) is built in the pedestal (32) as in the invention described in Item 17, or if the speaker (3) is built in the base (5) as in the invention described in Item 18, the wireless communication is achieved. The trouble of mounting the device (11) outside can be eliminated.

Further, the loudspeaker (3) and the microphone (4) are so arranged that the loudspeaker (3) and the microphone (4) do not protrude to the occupant's seat side from the upper surface of the backrest (1) of the seat. It is preferably mounted on a base (5).

Further, if the speaker (3) and / or the microphone (4) is made movable with respect to the base (5) as in the twentieth aspect, the occupant can:
It is possible to adjust the directivity of the microphone and / or the direction in which the received sound is generated.

The reference numerals in the parentheses of the above means are examples showing the correspondence with specific means described in the embodiments described later.

[0024]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention.

FIG. 1 shows a state in which the hands-free communication device according to the present invention is mounted on an automobile seat. Also,
FIG. 2 shows a view from above when the hands-free communication device is in use.

The hands-free communication device in this embodiment is arranged on the right side of a headrest 2 attached to a backrest 1 of a vehicle seat, and on the left side of the headrest 2. It comprises a telephone microphone 4, a speaker 3 and a base 5 for holding the microphone 4. Note that the microphone 4 has directivity toward the driver's mouth and is rotatable in the direction of the arrow in the figure.

The base 5 is provided with two holes 5a and 5b. Through these holes 5a and 5b, the headrest 2
By attaching the stays 2a and 2b to the backrest 1 of the seat, the base 5 is held by the stays 2a and 2b of the headrest 2 while being installed on the upper surface of the backrest 1.

The wiring 6 from the speaker 3 and the microphone 4
As shown in FIG. 3, when making a hands-free call,
It is inserted and connected to the microphone / earphone terminal 7a of the mobile phone 7.

By providing the speaker 3 on the right side of the headrest 2 in this manner, the speaker 3 is installed close to the driver's ear, so that the volume of the speaker 3 can be reduced, and howling can be reduced. Can be. Also,
Since the microphone 4 is provided on the opposite side of the speaker 3 with respect to the headrest 2, acoustic coupling between the speaker 3 and the microphone 4 can be reduced by the headrest 2 and the head of the driver 8, and howling is further reduced. can do.

Normally, this type of device is provided with an echo canceling circuit for removing echoes acoustically sneaking into the microphone from the speaker. According to the above-described structure, the echo canceling circuit between the speaker 3 and the microphone 4 is provided. Since the acoustic coupling can be reduced, the echo canceling circuit which has been conventionally required can be eliminated.

FIG. 4 shows a perspective view of the above-described hands-free communication device. The base 5 is made of resin, and the speaker 3 and the microphone 4 are fixedly attached to the base 5 with screws or the like from the back side.

The base 5 has a substantially rectangular shape when viewed from above, and the wiring 6 from the speaker 3 and the microphone 4 passes through the back side of the base 5 and extends along one side of the base 5 (base). 5 is attached to the backrest 1 so as to be taken out from substantially the center of one side (the same side as the left-right direction of the backrest 1). When the wiring 6 is connected to the mobile phone 7, the mobile phone 7 is usually placed between the driver's seat and the passenger's seat. Regardless of whether the vehicle is a steering wheel vehicle or a left steering wheel vehicle, connection with the mobile phone 7 can be easily performed.

In this case, as shown in FIG. 5, the wiring 6 from the speaker 3 and the microphone 4 may be taken out through the inside of the base 5. As a result, the wiring 6 does not pass through the back surface of the base 5, so that the appearance of the device can be improved. Of course, the wiring 6 may be routed on the upper surface or the lower surface of the base 5.

Further, the shape of the substrate 5 is not limited to a substantially rectangular shape, and as shown in FIG.
Only the microphone 4 and the holes 5a and 5b may have a protruding shape. The base 5 is, as shown in FIG.
It comprises a first base 51 to which the speaker 3 is attached and held by one stay 2a of the headrest 2, and a second base 52 to which the microphone 4 is attached and held by the other stay 2b of the headrest 2. It may be.

The base 5 may be made of metal, urethane, cloth, rubber, paper, wood, a combination thereof, or the like, in addition to being made of resin. In particular, when the sheet is made of the same material, the appearance is good.

The base 5 is made of a relatively hard material (resin, paper, wood, hard rubber, metal, etc.) so that it can be firmly attached and fixed, and its outside is made of a relatively soft material ( If it is configured to be covered with cloth, sponge, urethane, soft rubber, cotton, or the like), it is possible to reduce a rough feeling.

In the above-described embodiment, the base 5 is held on the stays 2a and 2b of the headrest 2 and is set on the upper surface of the backrest 1. However, as shown in FIG. May be fixed and attached to the upper surface of the backrest 1 using a fixing member. Further, as shown in FIG. 9, the base 5 may be fixedly attached to the headrest 2.

The speaker 3 is disposed on the right side of the headrest 2 and the microphone 4 is disposed on the left side of the headrest 2.
And the microphone 4 may be arranged on the right side of the headrest 2.

The speaker 3 and the microphone 4 are connected to the driver 8
The speaker 3 and the microphone 4 should be placed not on the upper surface of the backrest 1 but on the upper portions of both side surfaces of the backrest 1, as long as the acoustic coupling between the speaker 3 and the microphone 4 can be reduced. Each may be arranged. Further, the speaker 3 and the microphone 4 may be built in one and the other of the right side and the left side of the headrest 2, respectively. The point is that the speaker 3 may be arranged on one of the right side and the left side of the headrest 2 in the upper position of the backrest 1 and the microphone 4 may be arranged on the other.

Further, when the base 5 is installed, as shown in FIG. 2, by not protruding from the upper surface of the seat back portion 1 to the seating side of the driver 8, the shoulder, the neck, the Since the base 5 does not hit the head, it can be used without discomfort. In this case, although not shown, when the base 5 is installed,
It is preferable that the headrest 2 does not protrude toward the front side (the side where the head of the driver 8 hits). Also, since the microphone 4 and the speaker 5 do not protrude from the upper surface of the backrest portion 1 of the seat to the seating side of the driver 8, the sound between the speaker 3 and the microphone 4 is generated by the headrest 2 and the head of the driver 8. Can be reduced.

Also, the wiring 6 is taken out from the base 5 not at the substantially center of one side of the base 5 but at the end of one side of the base 5, so that the right-hand drive vehicle or the left-hand drive The base 5 may be installed on the upper surface of the backrest 1 with appropriate front and back surfaces facing upward according to the vehicle.

The speaker 3 and the microphone 4 may be attached to the base 5 by clip fixing, double-sided tape fixing, or adhesive fixing.

Also, as shown in FIG. 1 and the like, holes 2a, 2b provided in the base 5 are provided with stays 2a, 2b of the headrest 8.
, The stays 2 a, 2 on one side of the base 5.
By providing two claw portions (not shown) that can be fitted to the stays 2a and 2b at the position where the b is located, and pushing the claw portions into the stays 2a and 2b, the base 5 May be installed and fixed.

As shown in FIG. 10A, an amplifier unit (amplifying device) 10 for amplifying a received signal may be interposed in the wiring 6 between the hands-free communication device and the portable telephone 7. . Also, as shown in FIG. 10 (b), at the end of the wiring 6 of the hands-free communication device, wireless communication with the mobile phone 7 in a narrow area (a reception signal is received and a reception signal is transmitted to the speaker 3, and (Transmitting the transmission signal to the mobile phone 7) may be provided.

However, if components such as the amplifier unit 10 or the blue tooth unit 11 are added, there is a problem that the mounting is troublesome. For this reason, it is preferable that the amplifier unit 10 or the Bluetooth unit 11 is provided in the hands-free communication device.

FIGS. 11A to 11C show various embodiments in which the amplifier unit 10 is incorporated in a hands-free communication device. FIG. 11A shows an embodiment in which the amplifier unit 10 is built in the speaker 3, and FIG. 11B shows the embodiment in which the amplifier unit 10 is built in a pedestal 31 of the speaker 3 provided between the speaker 3 and the base 5. FIG.
(C) shows an embodiment in which the amplifier unit 10 is built in the base 5. In these embodiments, the amplifier unit 10 includes the speaker cone 3 of the speaker 3 in the wiring 6.
a (see FIG. 11 (a)).

FIGS. 12A to 12C show various embodiments in which the Bluetooth unit 11 is incorporated in a hands-free communication device. FIG. 12A shows an embodiment in which the Bluetooth unit 11 is built in the speaker 3, and FIG.
2 (b) shows the Bluetooth unit 11 connected to the speaker 3;
FIG. 12C shows an embodiment built in the pedestal 31 of FIG.
Shows an embodiment in which the Bluetooth unit 11 is built in the base 5. Thus blue tooth unit 11
Wiring in a hands-free communication device
Need not be routed to the outside.

Since the amplifier unit 10 or the Bluetooth unit 11 is driven by a battery or the like, the base 5 is provided with a battery (not shown).
In this case, a solar cell provided on the base may be used instead of the battery.

The embodiments shown in FIGS. 11 (a) to 11 (c) and 12 (a) to 12 (c) are different from the base 5 shown in FIG. Base 5 (5
1, 52), and the base 5 is fixed to the upper surface of the backrest 1 and the base 5 is fixed to the headrest 2 as in the embodiment shown in FIGS. Can be similarly applied.

In the various embodiments described above, the microphone 4 is movable, but the speaker 3 may be movable. Specifically, FIG.
As shown in the rear view of FIG. 3A, a vertical groove 3b is provided in the speaker 3, and the protrusion 3a of the base 5 is fitted into the vertical groove 3b so that the speaker 3 can be turned up and down. Alternatively, as shown in the side view of FIG. 13B, a pedestal 32 is provided on the speaker 3, and this pedestal 32 is
Can be turned up and down.
In this case, the vertical groove 3 b of the speaker 3 and the projection 5 a of the base 5,
The mechanism that enables the pedestal 32 of the speaker 3 to be rotatable by the gear 12 is understood as a mechanism that adjusts the vertical angle of the speaker 3.

As described above, by making the speaker 3 movable in the vertical direction, the angle of the speaker 3 is adjusted in the vertical direction according to the position of the driver's head (specifically, the driver's ear). Can be.

The hands-free communication device according to the present invention is not limited to the one connected to the mobile phone 7, but is also applicable to the one connected to a car phone.

[Brief description of the drawings]

FIG. 1 is a view showing a state in which a hands-free communication device according to the present invention is attached to a seat of an automobile.

FIG. 2 shows a view from above in the use state of the hands-free communication device according to the present invention.

FIG. 3 is a diagram showing a state in which a wiring 6 from a speaker 3 and a microphone 4 is connected to a microphone / earphone terminal 7a of the mobile phone 7;

FIG. 4 is a diagram showing a perspective configuration of the hands-free communication device shown in FIGS.

FIG. 5 is a diagram showing a modification of the hands-free communication device shown in FIG.

FIG. 6 is a diagram showing another modification of the hands-free communication device shown in FIG.

FIG. 7 is a diagram showing still another modified example of the hands-free communication device shown in FIG.

FIG. 8 is a view showing an embodiment in which the base 5 is fixedly attached to the upper surface of the backrest 1;

FIG. 9 is a view showing an embodiment in which the base 5 is fixedly attached to the headrest 2;

FIG. 10 is a diagram showing an embodiment in which an amplifier unit or a Bluetooth unit is provided between a hands-free communication device and a mobile phone.

FIG. 11 is a diagram showing an embodiment in which an amplifier unit is incorporated in a hands-free communication device.

FIG. 12 is a diagram showing an embodiment in which a Bluetooth unit is built in a hands-free communication device.

FIG. 13 is a diagram showing an embodiment in which a speaker 3 is movable.

[Explanation of symbols]

1 ... the backrest of the car seat, 2 ... headrest,
2a, 2b ... headrest stay, 3 ... speaker, 4
... Microphone, 5 base, 5a, 5b ... holes provided in the base, 6 wiring, 10 amplifier unit, 11 blue tooth unit, 51 ... first base, 52 ... second base.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04M 1/11 H04M 1/15 1/15 1/62 1/62 H04B 7/26 109G

Claims (20)

[Claims] 1. A speaker (3) is arranged at a position above a backrest (1) of a seat of an automobile and on one of a right side and a left side of a headrest (2) attached to the backrest (1). And a microphone (4) disposed at the other end of the hand-free communication device for a vehicle. 2. The hands-free communication device for an automobile according to claim 1, wherein the speaker (3) and the microphone (4) are installed on an upper surface of the backrest (1). 3. The loudspeaker (3) and the microphone (4) are installed at a position where the loudspeaker (3) and the microphone (4) do not protrude toward the occupant's seat from the upper surface of the seat back (1). The hands-free communication device for a vehicle according to claim 1. 4. The headset (2) according to claim 1, wherein the speaker (3) and the microphone (4) are incorporated in one and the other of a right side and a left side of the headrest (2). The hands-free communication device for a vehicle according to the above. 5. A base (5) installed on an upper surface of a backrest (1) of a vehicle seat, and said base when said base (5) is installed on an upper surface of said backrest (1). A speaker (3) attached to the base (5) so as to be located on one of a right side and a left side of a headrest (2) attached to (1); and the base (5) is a backrest. A microphone (4) attached to the base (5) so as to be located on the other of the right side and the left side of the headrest (2) when installed on the upper surface of the section (1). A hands-free communication device for automobiles, characterized by the following. 6. The base (5) is mounted on stays (2a, 2b) of the headrest (2) and is installed on the upper surface of the backrest (1). The hands-free communication device for an automobile according to claim 5. 7. The base (5) has holes (5a, 5b) through which stays (2a, 2b) of the headrest (2) pass.
The hands-free communication device for a vehicle according to claim 6, wherein 5b) is provided. 8. The backrest (1) in a state where the base (5) is installed on an upper surface of the backrest (1).
And the wiring (6) of the speaker (3) and the microphone (4) is taken out from substantially the center of the one side. The hands-free communication device for a vehicle according to any one of claims 5 to 7, wherein 9. The wiring (6) from the microphone (4) and the speaker (3) is taken out through the inside of the base (5). 9. The hands-free communication device for a vehicle according to any one of items 1 to 8. 10. The base (5) includes a first base (51) to which the speaker (3) is attached and which is held by one of the stays (2a) of the headrest (2);
The vehicle hand according to claim 5, wherein the microphone (4) comprises a second base (52) attached to the other stay (2b) of the headrest (2). Free call device. 11. A base (5) fixed to the upper surface of a backrest (1) of a vehicle seat, and one of a right side and a left side of a headrest (2) attached to the backrest (1). And a speaker (3) attached to the base (5) so as to be located at the right side and a left side of the headrest (2). A hands-free communication device for a vehicle, comprising a microphone (4). 12. A base (5) fixed to a headrest (2) attached to a backrest (1) of an automobile seat, and located on one of a right side and a left side of the headrest (2). (3) attached to the base (5), and a microphone (3) attached to the base (5) so as to be located on the other of the right side and the left side of the headrest (2). 4) A hands-free communication device for a vehicle, comprising: 13. An amplifying device (1) for amplifying a reception signal.
The hands-free communication device for a vehicle according to any one of claims 1 to 12, wherein 0) is incorporated in the speaker (3). 14. An amplifying device (1) for amplifying a reception signal.
The vehicle according to any one of claims 5 to 12, wherein 0) is incorporated in a pedestal (31) of the speaker (3) provided between the speaker (3) and the base (5). Hands-free communication device. 15. An amplifying device (1) for amplifying a reception signal.
The hands-free communication device for a vehicle according to any one of claims 5 to 12, wherein (0) is built in the base (5). 16. The speaker according to claim 1, further comprising a wireless communication device for transmitting and receiving a transmission signal and a reception signal wirelessly to and from the outside. The hands-free communication device for a vehicle according to claim 1. 17. A pedestal for the speaker (3) provided between the speaker (3) and the base (5) by a wireless communication device (11) for transmitting and receiving a transmission signal and a reception signal wirelessly to the outside. The hands-free communication device for a vehicle according to any one of claims 5 to 7, 10 to 12, which is built in (32). 18. The base according to claim 5, wherein a wireless communication device for transmitting and receiving a transmission signal and a reception signal wirelessly to and from the outside is built in the base. The hands-free communication device for a car according to any one of the above. 19. The speaker (3) and the microphone (4) are attached to the base (5) so as not to protrude from the upper surface of the seat back portion (1) to the occupant's seating side. 5. The method according to claim 5, wherein
The hands-free communication device for a vehicle according to any one of 4, 15, 17, and 18. 20. The hands-free communication device according to claim 19, wherein the loudspeaker (3) and / or the microphone (4) are movable.