JP2532764B2 - Wireless telephone for automobile - 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 radio telephone system for automobiles.

[0002]

2. Description of the Related Art FIG. 2 is a schematic block diagram showing a wireless telephone device for automobiles of a hands-free call system. As shown in FIG. 2, a microphone unit 1 for inputting a transmission voice and a speaker unit 2 for outputting a reception voice are connected to a suppression circuit unit 4 for suppressing sounds such as sounds of the wireless telephone device body 3, and The radio telephone circuit 5 is connected to the antenna 6.

The operation of the above configuration will be described below. The voice uttered by the driver (speaker / receiver) 7 is converted into an electric signal by the microphone unit 1, is input to the wireless telephone circuit 5 through the suppression circuit unit 4, and is transmitted from the antenna 6 to the other party as an electromagnetic wave. On the other hand, a signal received by the wireless telephone circuit 5 via the antenna 6 as an electromagnetic wave passes through the suppression circuit unit 4 and the speaker unit 2
Is output as a received voice and reaches the ear of the driver 7. Then, the suppression circuit unit 4 can suppress the ringing sound and the like generated by the acoustic coupling between the microphone unit 1 and the speaker unit 2.

FIG. 3 is a block diagram showing a conventional hands-free telephone radio telephone apparatus for an automobile, which is installed in the automobile. As shown in FIG. 3, the microphone unit 1 is provided in the vicinity of a driver's seat 11 in an automobile, in the illustrated example, a driver's seat 11 on a windshield 12.
It is supported by a awning 13 installed in the upper part in front of. The microphone unit 1 is connected to a wireless telephone device body 3 installed at a desired location by a microphone cable 14 wired along a wall surface of an automobile or the like, and a voice uttered by a driver is wirelessly transmitted via the microphone cable 14. Input is made to the telephone device body 3. A speaker unit 2 is installed in the center of the vehicle near the driver's seat 11, the speaker unit 2 is connected to a wireless telephone device body 3 by a speaker cable 15, and a signal received by the wireless telephone device body 3 is a speaker cable. Audio is output from the speaker unit 2 via 15. A cigar lighter socket 16 is installed in the center of the vehicle near the driver's seat 11, and the cigar lighter socket 16 has a power plug 1 at one end of a power cable 17.
8 is connected, and the other end of the power cable 17 is connected to the wireless telephone device body 3. Therefore, power is supplied from the cigarette lighter socket 16 to the wireless telephone device body 3 via the power cable 17.

The microphone unit 1 does not disturb the driving operation of the driver, such as the vicinity of the steering column 20 supporting the steering wheel 19 in addition to the position of the shade 13, and the voice of the driver It will be installed in a place where data can be entered. Further, the speaker unit 2 is also installed under the same conditions as the microphone unit 1 except the above installation place.

[0006]

The cigar lighter socket 16, the microphone unit 1 and the speaker unit 2 are connected to the outside from the radio telephone main body 3 in the automobile.
However, since the microphone cable 14 is longer than the other power cable 17 and speaker cable 15 in this, it is necessary to wire the microphone cable 14 so as not to disturb the driving operation of the driver. The microphone cable 14 was fixed so as not to obstruct the driver's field of view and to prevent it from coming off due to vibrations during traveling. However, this wiring work is troublesome, and if the microphone cable 14 comes off the fixed portion due to a vibration or the like during traveling, there is a problem that it interferes with the driving operation.

The present invention solves the above-mentioned problems of the prior art, and it is possible to improve the installation workability by eliminating the wiring work of the microphone cable and to avoid the obstruction of the driving operation in advance. It is an object of the present invention to provide a wireless telephone device for an automobile as described above.

[0008]

In order to achieve the above object, the present invention provides a microphone unit for inputting a voice transmission to a plug connected to a cigarette lighter socket installed near a driver's seat in an automobile. An integrated plug having the microphone unit is connected to the main body of the wireless telephone device by a cable for power supply and voice input.

[0009]

Therefore, according to the present invention, since the microphone unit is integrated with the plug for connecting to the cigarette lighter socket, the wiring work of the microphone cable can be eliminated.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

1 (a) and 1 (b) show a wireless telephone device for an automobile according to an embodiment of the present invention, FIG. 1 (a) is a configuration diagram in a state of being installed in the automobile, and FIG. 1 (b) is connected to a cigarette lighter socket. It is an enlarged perspective view of a plug to be formed.

The basic components and operation of the automobile radiotelephone device of the present invention are the same as those of the conventional example shown in FIG.

As shown in FIG. 1 (a), the radiotelephone device main body 3 is installed at a desired location on the automobile. The radio telephone main body 3 includes the suppression circuit unit 4 and the radio telephone circuit 5 (see FIG. 2) as in the above-described conventional example, and one end of the cable 21 is connected thereto. Plug 22 at the other end of cable 21
Also, the microphone unit 1 built in and integrated in the plug 22 is connected, and the plug 22 is connected to the cigarette lighter socket 16 installed in the central portion of the vehicle in the vicinity of the driver's seat 11. There is. The details will be described. As shown in FIG.
A pair of electrodes 24, 25 for supplying power from the cigarette lighter socket 16 is provided at the tip of the housing 3.
The microphone unit 1 is built in the base end part of the. The power cables 26 and 27 connected to the electrodes 24 and 25 and the microphone cable 28 connected to the microphone unit 1 are connected to the housing 2.
A cable 21 is connected to the wireless telephone device main body 3 through the inside of the wireless telephone 3. Therefore, power is supplied from the cigarette lighter socket 16 to the wireless telephone device body 3 via the power cables 26 and 27, and the voice uttered by the driver is input to the wireless telephone device body 3 via the microphone cable 28. ing.

As shown in FIG. 1A, the driver's seat 1
1, a speaker unit 2 is installed in the center of the vehicle in the vicinity of the vehicle, the speaker unit 2 is connected to the wireless telephone device body 3 by a speaker cable 15, and a signal received by the wireless telephone device body 3 is passed through the speaker cable 15. The speaker unit 2 outputs the sound.

In the figure, reference numeral 12 is a windshield, 13 is a sun shade, 19 is a steering wheel, and 20 is a steering column.

[0016]

As described above, according to the present invention, a microphone unit for transmitting voice transmission is integrated with a plug connected to a cigarette lighter socket installed near a driver's seat in an automobile, and the microphone is used. Since the plug having the unit is connected to the main body of the wireless telephone device by the cables for power supply and voice input, it is possible to eliminate the wiring work of the microphone cable. Therefore, it is possible to improve the installation workability and avoid the obstruction of the driving operation due to the conventional detachment of the microphone cable from the fixed portion.

[Brief description of drawings]

FIG. 1 (a) is a configuration diagram of a vehicle radio telephone device according to an embodiment of the present invention, which is installed in a vehicle. FIG. 1 (b) is the vehicle radio telephone device, showing a plug connected to a cigarette lighter socket. Enlarged perspective view of

FIG. 2 is a schematic block diagram showing an automobile wireless telephone device.

FIG. 3 is a configuration diagram showing a conventional automobile wireless telephone device installed in a vehicle.

[Explanation of symbols]

 1 Microphone unit 2 Speaker unit 3 Wireless telephone device body 11 Driver's seat 15 Speaker cable 16 Cigar lighter socket 21 Cable 22 Plug

Claims (1)

(57) [Claims] 1. A microphone unit for inputting a transmission voice is integrated with a plug connected to a cigarette lighter socket installed near a driver's seat in an automobile, and a plug having the microphone unit is provided in a main body of a wireless telephone device. A wireless telephone device for automobiles connected by cables for power supply and voice input.