JP2919812B2 - Hands-free telephone equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hands-free telephone set for use in vehicles, homes and the like and using a general-purpose portable telephone, and more particularly to a compact hands-free telephone apparatus which is easy to install.

[0002]

2. Description of the Related Art In recent years, automobile telephones have become extremely popular, and in addition to conventional handset telephones, hands-free telephones have been developed in order to avoid one-handed driving during the operation of the handset.

[0003] This type of hands-free telephone set is
A microphone for transmission is installed in, for example, a sun visor section, and an ON / OFF switch for transmission and reception is installed in, for example, a steering wheel section.
Since the dedicated speaker or the in-vehicle audio speaker is also used, the driver can talk without releasing the hand from the steering wheel.

[0004] In this case, since a car-dedicated telephone cannot be used once leaving the car, a conventional general-purpose portable telephone is configured to be connectable to a hands-free set telephone device. At that time, a mobile phone that can be used has been proposed.

[0005] Such a hands-free set type mobile phone system is configured such that a hands-free set housing is mounted in a seat side box of a center console or on a lid of the seat side box, and a mobile phone is set therein. Have been.

[0006]

However, in the conventional hands-free set car telephone system, there are (1) restrictions on the installation location, and (2) a harness or hands-free set for connecting the hands-free set to a vehicle power supply. There have been various problems such as a need for a harness for connecting to a mobile phone, and (3) a complicated device and high cost.

That is, in the conventional device, the hands-free set is stored in the seat side box of the center console or tied to the lid, so that the seat side box cannot be used, and the shape of the seat side box differs depending on the vehicle type. Therefore, it is difficult to firmly fix it, or a special part for mounting is required separately, which causes an increase in cost.

Further, when the hands-free set is mounted on the lid of the seat side box, the signal wiring harness is exposed, and there is a problem that the interior is not organized and the appearance is poor. Since the user needs to operate the device facing sideways, the operability is poor.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide a compact and inexpensive hands-free telephone apparatus which is excellent in versatility, storability and safety. And

[0010]

In order to achieve the above object, a hands-free telephone device according to the present invention is provided with a main body mounted inside a general-purpose can or a can having substantially the same shape as the general-purpose can. Wherein the main body includes at least a telephone accommodating portion accommodating a mobile phone, an external microphone, an external speaker, a battery power supply, the external microphone and the external speaker, and a built-in microphone and a built-in speaker of the mobile phone. And a control circuit that controls transmission and reception of audio signals to and from the input / output terminal of the telephone. The external speaker is provided upward at the bottom of the telephone housing.

In the hands-free telephone device of the present invention, the main body is mounted inside a general-purpose can or a can formed substantially in the same shape as the general-purpose can. You can choose your body freely. Further, when the user is tired of the previous design, the can can be replaced with a can of another design. Furthermore, since the general-purpose can can be used in the hands-free telephone device of the present invention, it contributes to recycling of empty cans. Further, in the hands-free telephone device of the present invention, since the external speaker is provided upward at the bottom of the telephone housing, sound output from the external speaker propagates upward in the space of the telephone housing as it is, and Output to the outside through the opening. As a result, the voice is not muffled and is clearly transmitted to the user.

[0012] The hands-free telephone device of the present invention having such a general-purpose can or a can having substantially the same shape as the housing is, for example, installed in a cup holder mounted on an automobile as it is for use in a vehicle. When used for home use, it can be installed on a table or other place as it is, so that installation is extremely convenient.

When the hands-free telephone device of the present invention is applied to a vehicle, it can be installed in a cup holder previously mounted on an automobile or a retrofitted cup holder. The mounting position of the cup holder is not particularly limited,
It can be anywhere, such as the center console, door side, or instrument panel top.

[0014] In the hands-free telephone device of the present invention, the main body is formed with a telephone accommodating portion for accommodating a mobile telephone. The main body mounted inside the can has a function of accommodating the mobile phone, and by placing the can on a cup holder or the like, the mobile phone can be easily placed.

Further, in the hands-free telephone device of the present invention, it is possible to provide an electromagnetic wave shielding means on the inner wall of the telephone housing of the main body. When the mobile phone and the control circuit board come close to each other, the electromagnetic wave emitted from the mobile phone mixes into the control circuit and causes noise, but the electromagnetic wave is generated between the telephone housing and the control circuit, for example, on the inner wall of the telephone housing. By providing the shielding means, an electromagnetic wave transmitted from the mobile phone to the control circuit can be shielded.

In the hands-free telephone device according to the present invention, the main body is provided with an external microphone and an external speaker. The external microphone is for inputting the voice of the user, and the external speaker is for outputting the voice of the other party. Since an external microphone as an input unit of the hands-free set and an external speaker as an output unit are provided in the main body, a harness for connecting the external microphone and the external speaker to the control board must be exposed to the room. Disappears.

Further, in the hands-free telephone device of the present invention, the main body is provided with a battery power supply. By using a battery as the power source for the various electronic components provided on the control board and providing it directly on the main body, the harness for connecting the power source and the control board is not exposed inside the room, and it can be used anywhere. You can move.

In this case, the battery may be a secondary battery. In addition, it is preferable that a terminal for charging the secondary battery be provided by a vehicle power supply when applied for in-vehicle use and a household outlet when applied for home use. By doing so, the vehicle-mounted battery power can be supplied from the cigarette terminal or the like, or the household power can be supplied from the outlet, so that the battery can be charged as it is even if the battery capacity is reduced by prolonged use, which is more convenient than a dry battery. . The vehicle battery power may be directly supplied from a cigarette terminal or the like.

In the hands-free telephone device of the present invention, the main body is provided with a control circuit for controlling transmission and reception of audio signals between the external microphone and external speaker and the built-in microphone and input / output terminal of the built-in speaker of the portable telephone. ing. By providing the control circuit in the main body,
The harness for connection with the external microphone and the external speaker is not exposed to the outside.

In the hands-free telephone device of the present invention,
Although not particularly limited, it is preferable to provide a battery power on / off switch and an external speaker volume switch on the main body.

In the hands-free telephone device of the present invention,
Preferably, the microphone and the speaker are connected to input / output terminals of a built-in microphone and a built-in speaker of the mobile phone via a harness and a control circuit. By providing only a microphone and a speaker in a hands-free telephone device, that is, by using a portable telephone as a transmission / reception circuit, a compact and inexpensive hands-free telephone device can be provided.

[0022]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 3 show the first embodiment of the present invention.
FIG. 4 is a front view, a side view, and a plan view showing a hands-free telephone device according to the embodiment; FIG. 4 is a perspective view showing an installed state of the hands-free telephone device of the present invention; FIG.

As shown in FIGS. 1 to 3, a hands-free telephone device 10 according to the present embodiment has a main body 1 inserted and mounted in a can C. The can C has a diameter of about 60 mm. A general-purpose can having a height of about 120 mm or a substantially can having the same shape is used. The upper lid of the general-purpose can used for beverages can be appropriately removed and used, or a dedicated can formed in substantially the same shape as the general-purpose can can be used. This selection may be made according to the user's preference.

The material of the can C is not particularly limited.
It can be formed of steel, synthetic resin, and the like. In addition, the numerical value of the size of the can described above is merely an example, and it is sufficient that the size is such that the main body 1 can be inserted.

The main body 1 inserted and mounted in the can C is formed of, for example, plastic, and a telephone housing 2 for inserting and housing the mobile telephone 20 is formed in a bottomed cylindrical shape. Also, in the vicinity of the telephone housing 2,
The external microphone 3 and the external speaker 4, which will be described later, are provided so that the tips of the external microphone 3 and the external speaker 4 are exposed to the outside. The built-in microphone 2 of the mobile phone 20 is provided on the side wall of the phone housing 2.
2 and a control circuit board 8 for controlling transmission and reception of audio signals to and from the input / output terminal 21 of the built-in speaker 23.

The external microphone 3 is provided on the upper surface of the main body 1 as shown in FIGS. 1 to 3, and is configured so as to be flexible so that the tip, which is a sound collecting portion, can bend in any direction. I have.

The external microphone 3 is connected to the portable telephone 2
The voice input of the driver or the like is input in place of the built-in microphone 22 of the mobile phone 20. As shown in FIG. 5, an earphone jack (harness) 7 provided on the control circuit board 8 is connected to the input / output terminal 21 of the mobile phone 20. By the connection, the audio signal input from the microphone 3 is transmitted from the input / output terminal 21 to the mobile phone 20 via the control circuit 8 and the harness 7, and is transmitted by the built-in control circuit (not shown) of the mobile phone 20. After signal processing, the signal is sent from the built-in antenna 24 to the communication partner as a radio signal.

On the other hand, the external speaker 4 is provided at the bottom of the telephone housing 2 of the main body 1 as shown in FIG. It will flow out. A hole 2a for sound propagation is formed at the bottom of the telephone housing 2.

The external speaker 4 is for outputting voice from the other party in place of the built-in speaker 23 of the mobile phone 20, and as shown in FIG. By connecting an earphone jack (harness) 7 provided to the mobile phone 20, a voice radio signal received by the built-in antenna 24 from a communication partner is subjected to signal processing by a control circuit of the mobile phone 20, and then the input / output terminal 21 and the harness The signal is output from the speaker 4 to the room via the control circuit 7 and the control circuit 8.

In the hands-free telephone device 10 of the present embodiment, a dry battery (battery power source) 5 is provided on the bottom surface of the main body 1, and an on / off switch 6 for the battery power source 5 and an external speaker are provided on the control circuit board 8. 4 volume switches 9 are provided.

In the present invention, the battery power source 5 may be a general-purpose dry battery or a secondary battery. Also,
When the battery power source 5 is a secondary battery, a charging terminal may be provided to charge the secondary battery with an automobile battery. By doing so, the on-board battery power can be supplied from the cigarette terminal or the like, so that the battery can be charged as it is even when the battery capacity is reduced due to long-term use, which is more convenient than a dry battery. Further, in-vehicle battery power may be directly supplied from a cigarette terminal or the like instead of the battery power supply 5.

The hands-free telephone device 10 of the present embodiment
Can be installed in the cup holder CH as shown in FIG. The cup holder CH includes not only one that is previously installed in the center console of an automobile, but also one that is retrofitted. The mounting position of the cup holder CH is not particularly limited, and may be anywhere such as a center console, a door side, or an upper surface of an instrument panel.

When the portable telephone 20 is used as a hands-free device, the portable telephone 20 is inserted into the telephone housing 2 and the jack of the harness 7 is inserted into the input / output terminal 21 of the portable telephone 20. As a result, the driver's voice is input from the external microphone 3, and the control circuit 8, the harness 7, the input / output terminal 21
To the built-in control circuit of the mobile phone 20 via Then, it is transmitted from the built-in antenna 24 as a sound wave.

On the other hand, the voice from the other party is received by the built-in antenna 24 and processed by the built-in control circuit of the mobile phone 20, and then from the external speaker 4 via the input / output terminal 21, the harness 7 and the control circuit 8. It is output indoors. Thereby, the driver can talk on the phone without releasing the hand from the steering wheel.

In the hands-free telephone device 10 according to the present embodiment having the above-described configuration, the external speaker 4 is provided upward at the bottom of the telephone housing 2, so that the sound output from the external speaker 4 is transmitted to the telephone. The light propagates upward in the space of the housing portion 2 as it is, and is output to the outside from the upper opening. As a result, the voice is not muffled and is clearly transmitted to the user.

Further, since the main body 1 is formed so as to be mountable on a general-purpose can or a can C having substantially the same shape as the general-purpose can,
It is possible to freely select a can C having a different design according to the user's preference. Further, when the user is tired of the previous design, the can C can be replaced with another can C of another design. Further, a general-purpose can can be used as the can C, which contributes to recycling of empty cans.

In addition to this, if the main body 1 is inserted and mounted in the can body C, as shown in FIG. 4, the main body 1 can be installed in the cup holder CH mounted on the automobile without any difficulty, which is extremely convenient. Further, since the main body 1 has a function of accommodating the mobile phone 20, only the insertion of the mobile phone 20 is sufficient, which is very simple.

Further, an external microphone 3 as an input unit of the hands-free set and an external speaker 4 as an output unit
Are provided in the main body 1 so that a harness for connecting the external microphone 3 and the external speaker 4 to the control circuit board 8 is routed inside the main body 1 and is not exposed to the outside.

The power supply 5 for the various electronic components provided on the control circuit board 8 is a dry battery or a secondary battery, and is built in the main body 1 so that a harness for connecting the power supply 5 and the control circuit board 8 is also provided. It is routed inside the main body 1 and is not exposed to the outside. Also, the hands-free telephone device 10
Can be moved freely anywhere.

Further, in the hands-free telephone device 10 of the present embodiment, the external microphone 3 and the external speaker 4
Only, and the transmission / reception circuit or the like uses the cellular phone 20 via the 3P earphone jack 7, so that a compact and inexpensive hands-free telephone device 10 can be provided.

The embodiments described above are described for facilitating the understanding of the present invention, and are not described for limiting the present invention. Therefore, each element disclosed in the above embodiment is intended to include all design changes and equivalents belonging to the technical scope of the present invention.

For example, a design such as a picture may be applied to the surface of the can C to add a design effect. Further, the present invention can be applied to home use and the like in addition to the use for vehicles.

[0043]

As described above, according to the present invention, can bodies having different designs can be freely selected according to the user's preference. , Can be replaced with a can of other designs. Furthermore, since the general-purpose can can be used in the hands-free telephone device of the present invention, it contributes to recycling of empty cans. Further, since the external speaker is provided upward, the output sound is not muffled, and is clearly transmitted to the user.

In addition, the hands-free telephone device of the present invention is compact and convenient to install, and since the external microphone, external speakers, power supply and control circuit board are provided in the main body, the handling of the harness is easy. It can be moved anywhere without need. Also, it looks good.
In addition, since the transmission / reception control circuit and the like use a mobile phone, an inexpensive hands-free telephone device can be provided.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a hands-free telephone device of the present invention.

FIG. 2 is a side view of FIG.

FIG. 3 is a plan view of FIG. 1;

FIG. 4 is a perspective view showing an installation state of the hands-free telephone device of the present invention.

FIG. 5 is a block diagram showing a hands-free telephone device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Hands-free telephone apparatus 1 ... Main body 2 ... Telephone accommodation part 2a ... Voice propagation hole 3 ... External microphone 4 ... External speaker 5 ... Battery power supply 6 ... ON / OFF switch 7 ... Harness 8 ... Control circuit board (control circuit) 9 ... Volume switch 20 ... Mobile phone 21 ... Input / output terminal 22 ... Built-in microphone 23 ... Built-in speaker 24 ... Built-in antenna C ... Can body CH ... Cup holder

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) H04M 1/60 H04M 1/02 H04M 1/11 H04Q 7/32 B60R 11/02

Claims (2)

(57) [Claims] 1. A main body (1) which is mounted inside a general-purpose can or a can (C) having substantially the same shape as the general-purpose can. Telephone (20)
A telephone housing (2), an external microphone (3), an external speaker (4), a battery power supply (5),
The external microphone (3) and the external speaker (4)
And a control circuit (8) for controlling transmission and reception of audio signals to and from an input / output terminal (21) of a built-in microphone (22) and a built-in speaker (23) of the mobile phone. The external speaker (4) A hands-free telephone device, which is provided upward at a bottom of the telephone housing portion (2). 2. An external microphone (3) and an external speaker (4) are connected via a harness (7) and the control circuit (8) to an internal microphone of the portable telephone (20) and an input / output terminal of the internal speaker (2). The hands-free telephone device according to claim 1, which is connected to (21).