JP2002111825A - Portable telephone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a low noise, low cost small portable telephone which can be folded at the time of conversation. SOLUTION: A display section 4, a transmitter 5 for transmitting voice to the opposite party, a receiver 3 for receiving voice of the opposite party, and a voice processing section for converting a communication signal and a voice signal, are disposed in a first housing 1. Further, a key operating section 12 and a radio section 11 for transmitting/receiving the communication signal are disposed in a second housing 2 wherein the first and second housing 1 and 2 are connected at a hinge part 8 so that they can be folded. In such a portable telephone, an incoming/terminating key 13 for connecting/disconnecting a communication line is provided on the back 1a of the first housing 1, and through holes 19 and 20 for enabling talk while folding the first and second housings 1 and 2 are made on the rear side of the receiver 3 and the transmitter 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable telephone, and more particularly to a foldable portable telephone.

[0002]

2. Description of the Related Art A conventional foldable portable telephone is disclosed in, for example, Japanese Patent Application Laid-Open No. 11-68899. According to this mobile phone, the first and second housings connected via the hinge are foldable. A first receiver for receiving the voice of the other party is provided at an upper portion of the first housing. A display unit for displaying the contents of the e-mail and the destination number is provided below the first handset.

[0003] A first transmitter for transmitting voice to a communication partner is provided at a lower portion of the second housing. Above the first transmitter, a key operation unit including an input key for inputting the contents of an e-mail and a destination number, a function key for switching functions, a power key, and the like is provided. By disposing the display unit and the key operation unit separately in the first and second housings, the display unit and the key operation unit can be compactly stored by folding.

[0004] Further, a second transmitter and a second receiver are provided facing the back surface of the first housing and capable of talking in a state where the first and second housings are folded. Thereby, when there is an incoming call, a call can be made without opening the first and second housings, and the operability is improved.

[0005]

However, according to the above-mentioned conventional portable telephone, the first receiver is provided at the upper part of the first housing, and the first transmitter is provided at the lower part of the second housing. For this reason, if a voice processing unit for converting a communication signal and a voice signal is arranged in, for example, the first housing, a signal line connecting the voice processing unit and the first transmitter is long. Second audio processing unit
When it is arranged on the housing, the signal line connecting the voice processing unit and the first receiver becomes long. For this reason, there has been a problem that noise easily gets on the signal line and becomes noise.

[0006] Further, since the second transmitter and the second receiver are provided to enable a telephone call in a state where the first and second housings are folded, the number of parts is increased and the cost is increased. Had the problem of becoming large.

An object of the present invention is to provide a portable telephone capable of reducing noise. Another object of the present invention is to provide a low-cost, small-sized mobile phone while enabling a call in a folded state.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a first invention having a display unit, a transmitter for transmitting voice to a call partner, and a receiver for receiving voice of the call partner.
It is characterized by including a housing, a second housing having a key operation unit, and a hinge unit for connecting the first housing and the second housing in a foldable manner.

According to this configuration, the number of signal lines for voice processing connected to the transmitter and the receiver are reduced.

According to the present invention, in the portable telephone having the above configuration, a radio section for transmitting / receiving a communication signal is provided in the second casing, and an audio processing section for performing a conversion process between the communication signal and the audio signal is provided in the first casing. It is characterized by being arranged on the body. According to this configuration, the number of signal lines connecting between the voice processing unit and the transmitter and between the voice processing unit and the receiver are reduced. In addition, the voice processing unit and the radio unit having a large current fluctuation during transmission are arranged separately.

According to the present invention, in the portable telephone having the above-mentioned structure, an incoming / outgoing call key for connecting / disconnecting a communication line is provided on the back of the first or second housing, and the first and second housings are provided. It is characterized in that a call can be made with the transmitter and the receiver in a state in which the body is folded. According to this configuration, when there is an incoming call, the call is performed by operating the incoming / end key with the first and second housings folded, and when the call ends, the incoming call is waited for by operating the incoming / end key. State. The same operation can be performed even if the incoming key and the end key are separately provided.

Further, the present invention is characterized in that, in the portable telephone having the above-described structure, a through-hole that opens toward the back of the first housing is provided on the back side of the transmitter and the receiver. According to this configuration, the sound emitted from the receiver can be heard from the back of the first housing through the through hole on the back of the receiver, and the voice of the user emitted from the back of the first housing can be heard on the back of the transmitter. It is delivered to the transmitter through the through hole.

Further, according to the present invention, in the portable telephone having the above-described structure, a through-hole penetrating the second housing is provided at a position facing the transmitter and the receiver when the first and second housings are folded. It is characterized by having been provided. According to this configuration, in a state where the first and second housings are folded, sound emitted from the handset can be heard from the back surface of the second housing through the through hole facing the handset, and emitted from the back surface of the second housing. The voice of the user is delivered to the transmitter through the through hole facing the transmitter.

Further, according to the present invention, in the portable telephone having the above-described structure, the notch formed by cutting the second housing is positioned at a position facing the transmitter or the receiver in a state where the first and second housings are folded. It is characterized by being provided in. According to this configuration, in a state where the first and second housings are folded, for example, a user's voice emitted from the back surface of the second housing is delivered to the transmitter through the notch.

Further, according to the present invention, in the portable telephone having the above structure, the first and second housings can be rotated by the hinge portion so that the back surface of the first housing and the back surface of the second housing can be substantially contacted. It is characterized by doing so. According to this configuration, the transmitter and the receiver provided in the first housing are directed outward by folding the rear surface of the first housing and the rear surface of the second housing substantially in contact with each other. In this case, a call can be made without the rotation of the first and second housings when an incoming call is received.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 (a) and 1 (b) show the first
It is a side sectional view and a front view showing the mobile phone of the embodiment. FIG. 1A shows a cross section taken along line A1-A1 of FIG. The mobile phone is configured such that the first housing 1 and the second housing 2 are rotatably connected to each other by a hinge portion 8 and can be folded. The hinge portion 8 is provided on the projection 1 protruding from the first housing 1.
b is rotatably fitted via a pin 22 to a recess 2 b formed in the second housing 2.

A receiver 3 formed of a receiver is disposed in an upper part of the first housing 1. An opening 3a is formed in the first housing 1 so as to face the front surface of the receiver 3 so that the voice of the other party emitted from the receiver 3 can be heard through the opening 3a. Below the first receiver 3, there is provided a display unit 4 composed of a liquid crystal panel or the like for displaying the contents of the e-mail and the destination number.

Below the display unit 4, a transmitter 5 composed of a microphone is provided. An opening 5a is formed in the first housing 1 so as to face the front surface of the transmitter 5, and the voice of the user is transmitted to the opening 5a.
The signal reaches the transmitter 5 via a. The receiver 3, the display unit 4, and the transmitter 5 are mounted on a printed circuit board 6. A control / sound processing unit 7 including a circuit for converting a communication signal and a sound signal and a circuit for controlling each unit is mounted on the back surface of the printed circuit board 6.

The second housing 2 is provided with a key operation unit 12 including an input key for inputting the contents of an e-mail and a destination number, a function key for switching functions, a power key for turning on / off the power, and the like. ing. By arranging the display unit 4 and the key operation unit 12 which require a large space in a plan view on the first and second housings 1 and 2 separately, the first and second housings are provided.
The housings 1 and 2 can be stored compactly by folding them.

Each key constituting the key operation unit 12 is mounted on the printed circuit board 10. A wireless unit 11 composed of a circuit for transmitting and receiving communication signals is mounted on the back surface of the printed circuit board 10. The voice captured by the transmitter 5 is converted into a voice signal, and the control / voice processing unit 7 converts the voice signal into a transmission signal. Then, the transmission signal is transmitted by the radio unit 11. Further, the received signal received by the wireless unit 11 is converted into an audio signal by the control / audio processing unit 7. Then, the sound is uttered by the receiver 3 as voice.

Insertion holes 1c, 2c are formed at the ends of the connection portions of the first and second housings 1, 2, respectively. The flexible substrate 9 inserted into the insertion holes 1c and 2c
Connects the printed circuit board 6 and the printed circuit board 10. A battery 20 is mounted on the lower portion of the back surface of the printed circuit board 10, and power is supplied to each unit by the battery 20. The control / voice processing unit 7 controls the wireless unit 11 and the display unit 4.
And the key operation unit 12 is controlled.

In the portable telephone having the above-described configuration, the power is turned on by pressing the power key provided on the key operation unit 12, whereby the portable telephone is in a state of waiting for an incoming call. When making a call, the folded first and second housings 1 and 2 are opened, and a numeric key provided on the key operation unit 12 is pressed to input a destination number. The input destination number is displayed on the display unit 4, and after the user visually recognizes it, a call is made by pressing a call key provided on the key operation unit 12.
This enables a call.

When there is an incoming call, when the folded first and second housings 1 and 2 are opened, the destination number is displayed on the display unit 4, and the user presses the call key after visually recognizing. Connects the communication line. This allows you to talk,
When the call ends, the call key is pressed again to enter the incoming call waiting state.

According to the portable telephone of the present embodiment, the receiver 3 and the transmitter 5 are arranged in the first housing 1, so that
Between the voice processing unit 7 and the receiver 3 and the control / voice processing unit 7
The length of the signal line between the transmitter and the transmitter 5 can be reduced. Therefore, it is possible to reduce noise due to noise captured by the signal line.

Also, since the radio unit 11 which is a noise source is disposed in the second housing 2 due to a large current fluctuation at the time of transmission, the control / voice processing unit 7, the receiver 3 and the transmitter 5 have noise. It can be located further away from the source to further reduce noise. In addition, since the battery 20 is disposed in the second housing 2, the battery 20 and the wireless unit 11 can be arranged close to each other, and the influence of the current fluctuation of the wireless unit 11 on each unit can be reduced. .

FIGS. 2A, 2B, and 2C are a side sectional view, a front view, and a rear view, respectively, showing a mobile phone according to a second embodiment. FIG. 2A shows A2-
A2 section is shown. For convenience of description, the same parts as those in the first embodiment of FIG. 1 are denoted by the same reference numerals.
The difference from the first embodiment is that a receiving / end key for connecting and disconnecting a communication line on the back surface 1a of the first housing 1 while providing the through holes 19 and 20 on the back side of the receiver 3 and the transmitter 5. 13 is provided. Other parts are the same as in the first embodiment.

FIG. 3 is a sectional view taken along line A3-A3 of FIG. 2B. The incoming / end key 13 is attached to the printed circuit board 6 and protrudes from the back surface 1a of the first housing 1. As shown in FIG. 2A, the through holes 19 and 20 open toward the back surface 1 a of the first housing 1 and communicate with the front surfaces of the receiver 3 and the transmitter 5.

For this reason, the sound emitted from the front of the receiver 3 can be heard from the back 1 a of the first housing 1 through the through hole 19. In addition, the user's voice emitted from the back of the first housing 1 is captured by the transmitter 5 through the through hole 20. Therefore, a call can be made from the back surface 1a of the first housing 1. In particular, the first,
When the second housings 1 and 2 are folded, the surface of the second housing 2 substantially abuts the surface of the first housing 1. Thus, sound leakage from the openings 3a and 5a is prevented, so that a good call can be made.

In the portable telephone having the above-described configuration, when the power is turned on by pressing a power key provided on the key operation unit 12, a state of waiting for an incoming call is established. When making a call, a call can be made by the same operation as in the first embodiment. When an incoming call is received, the communication line is connected by pressing the incoming / end key 13.
As a result, the call becomes possible, and when the call ends, the incoming / end key 13 is depressed again to enter the incoming call waiting state. Further, similarly to the first embodiment, the first and second housings 1,
It is also possible to make a call by opening 2 and operating the call key.

According to the present embodiment, the same effect as that of the first embodiment can be obtained, and the user can make a call at the time of an incoming call without opening the first and second housings 1, 2. . Therefore, the operability of the mobile phone can be improved. Since a plurality of receivers and a plurality of transmitters are not required unlike the conventional example, the cost can be reduced and the size of the mobile phone can be reduced.
In addition, as the incoming / outgoing call key 13, an incoming call key for connecting the communication line and an end key for cutting off the communication line may be provided separately.

Next, FIGS. 4A and 4B respectively show the third
It is a side sectional view and a front view showing the mobile phone of the embodiment. FIG. 4A shows a cross section taken along line A4-A4 of FIG. 4B. FIG. 5 is a sectional view taken along line A5-A5 of FIG. For convenience of description, the same parts as those in the first embodiment of FIG. 1 are denoted by the same reference numerals.

The second embodiment differs from the first embodiment in that through holes 14 and 15 are provided in the upper and lower portions of the second housing 2, respectively.
The point is that an incoming / end key 13 for connecting and disconnecting a communication line is provided on the back surface 2a of the second housing 2. Other parts are the same as in the first embodiment.

The incoming / end key 13 is attached to the printed circuit board 10 and protrudes from the back surface 2a of the second housing 2. The through holes 14 and 15 are respectively provided on the rear surface 2 of the second housing 1.
It opens toward a. Then, as shown in FIG. 6, when the first and second housings 1 and 2 are closed, the receiver 3 and the transmitter 5
The through holes 14 and 15 are provided in such a manner as to face the holes.
Therefore, the sound emitted from the receiver 3 can be heard from the back surface 2 a of the second housing 2 through the through hole 14. The user's voice emitted from the back of the second housing 2 is captured by the transmitter 5 through the through hole 15.

In the portable telephone having the above-described structure, the power is turned on by pressing the power key provided on the key operation unit 12, whereby the portable telephone is in a state of waiting for an incoming call. When making a call, a call can be made by the same operation as in the first embodiment. If there is an incoming call, the first and second
By pressing the incoming / end key 13 with the housings 1 and 2 closed, a communication line is connected.

With this operation, a call can be made. When the call is finished, the incoming call / end key 13 is depressed again to enter a call waiting state. Also, as in the first embodiment, the first,
It is also possible to talk by opening the second housings 1 and 2 and operating the talk key. In addition, as the incoming / outgoing call key 13, an incoming call key for connecting the communication line and an end key for cutting off the communication line may be provided separately.

Next, FIGS. 7 (a) and 7 (b) show the fourth
It is a side sectional view and a front view showing the mobile phone of the embodiment. FIG. 7A shows a cross section taken along line A6-A6 in FIG. 7B. For convenience of explanation, the same parts as those in the third embodiment of FIG. 4 are denoted by the same reference numerals.

The difference from the third embodiment is that a notch 16 is provided in place of the through hole 14. Other parts are the same as in the third embodiment. When the first and second casings 1 and 2 are closed as shown in FIG.
The notch 16 is opposed to the receiver 3 so that the opening 3a is exposed. Therefore, the sound emitted from the receiver 3 can be heard from the back surface 2a of the second housing 2 through the opening 3a and the cutout portion 16. The user's voice emitted from the back of the second housing 2 is delivered to the transmitter 5 through the through hole 15.

In the portable telephone having the above-described configuration, outgoing and incoming calls can be performed by the same operation as in the third embodiment. It is also possible to talk by opening the first and second housings 1 and 2 and operating a talk key. In addition, as the incoming / outgoing call key 13, an incoming call key for connecting the communication line and an end key for cutting off the communication line may be provided separately. Although the notch 16 is provided at a position facing the opening 3a, it may be provided at a position facing the opening 5a. A notch may be provided at a position facing each of the opening 3a and the opening 5a.

Next, FIGS. 9A and 9B respectively show the fifth embodiment.
It is a side sectional view and a front view showing the mobile phone of the embodiment. FIG. 9A shows a cross section taken along line A7-A7 of FIG. 9B. For convenience of description, the same parts as those in the first embodiment of FIG. 1 are denoted by the same reference numerals.

The difference from the first embodiment is that a hinge portion 8 composed of a convex portion 1b and a concave portion 2b of the first and second housings 1 and 2 is provided.
The first and second housings 1 and 2 can be rotated by a connecting member 17 and a flexible board reinforcing plate 18 instead of (see FIG. 1). In addition, an incoming / outgoing call key 13 for connecting and disconnecting a communication line is provided on the surface of the first housing 1. Other parts are the same as in the first embodiment.

The connecting member 17 is rotatably supported by the first and second housings 1 and 2 by shaft portions 17a and 17b. In addition, the flexible board reinforcing plate 18 is
It is made of a deformable member that covers and reinforces both sides, and can be bent freely. Therefore, FIG.
As shown in (1), the first and second housings 1 and 2 can be rotated until the back surface 1a of the first housing 1 and the back surface 2a of the second housing 2 substantially contact each other. FIG. 10 is a cross-sectional view taken along line A8-A8 of FIG. 9B. The incoming / end key 13 is attached to the printed circuit board 6 and protrudes from the surface of the first housing 1.

In the portable telephone having the above-described structure, the power is turned on by pressing the power key provided on the key operation unit 12, so that a state of waiting for an incoming call is established. When making a call, a call can be made by the same operation as in the first embodiment. When an incoming call is received, the communication line is connected by pressing the incoming / end key 13.

As a result, it is possible to talk while the back surfaces 1a and 2a of the first and second casings 1 and 2 are folded so as to be substantially in contact with each other. When the talking is completed, the incoming / end key 13 is pressed again. It enters the incoming call waiting state. Further, similarly to the first embodiment, it is possible to talk by opening the first and second housings 1 and 2 and operating the talk key. still,
As the incoming / outgoing call key 13, an incoming call key for connecting the communication line and an end key for cutting off the communication line may be provided separately.

According to this embodiment, the same effects as those of the first to fourth embodiments can be obtained, and the display on the display unit 4 can be displayed without the user opening the first and second housings 1 and 2. You can see it. As a result, the call can be started after confirming the destination number and the like, and the operability of the mobile phone can be further improved.

[0045]

According to the present invention, since the receiver and the transmitter are arranged in the first housing, the signal line for voice processing can be shortened. Therefore, noise on the signal line is suppressed,
Noise can be prevented.

Further, according to the present invention, the audio processing unit is provided in the first housing, and the radio unit serving as a noise source is provided in the second housing because the current fluctuation during transmission is large. The handset and the handset are located away from the noise source,
Noise can be further reduced.

According to the present invention, an incoming / outgoing call key for connecting / disconnecting a communication line is provided on the back surface of the first housing or the second housing, and the first and second housings are folded. Since the call can be made using the transmitter and the receiver, the user can make a call when receiving a call without opening the first and second housings. Therefore, the operability of the mobile phone can be improved. Further, unlike the conventional example, a plurality of receivers and a plurality of transmitters are not required, so that the cost can be reduced and the size of the mobile phone can be reduced.

Further, according to the present invention, since the through-hole opening toward the rear surface of the first housing is provided on the back side of the transmitter and the receiver, sound easily emitted from the receiver can be easily transmitted to the first housing. The sound can be heard from the back and the sound emitted from the back of the first housing can be delivered to the transmitter. Thereby, a call can be easily made from the back of the first housing.

Further, according to the present invention, a through hole or a cutout penetrating the second housing is provided at a position facing the transmitter and the receiver in a state where the first and second housings are folded. Therefore, the sound emitted from the receiver can be heard from the back of the second housing, and the sound emitted from the back of the second housing can be delivered to the transmitter. Thereby, it is possible to easily make a call from the back of the second housing.

According to the present invention, the first,
Since the second housing is rotated so that the rear surface of the first housing and the rear surface of the second housing can substantially contact each other, the user can receive an incoming call without opening the first and second housings. Can be performed, and the display on the display unit can be visually recognized. Therefore, the operability of the mobile phone can be further improved.

[Brief description of the drawings]

FIG. 1 is a diagram showing a mobile phone according to a first embodiment of the present invention.

FIG. 2 is a diagram illustrating a mobile phone according to a second embodiment of the present invention.

FIG. 3 is a sectional view taken along line A3-A3 of FIG. 2;

FIG. 4 is a diagram showing a mobile phone according to a third embodiment of the present invention.

FIG. 5 is a sectional view taken along line A5-A5 of FIG.

FIG. 6 is a perspective view showing a state in which a mobile phone according to a third embodiment of the present invention is folded.

FIG. 7 is a diagram showing a mobile phone according to a fourth embodiment of the present invention.

FIG. 8 is a perspective view showing a state in which a mobile phone according to a fourth embodiment of the present invention is folded.

FIG. 9 is a diagram showing a mobile phone according to a fifth embodiment of the present invention.

FIG. 10 is a sectional view taken along line A8-A8 of FIG.

FIG. 11 is a side sectional view showing a state where a mobile phone according to a fifth embodiment of the present invention is folded.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 1st housing | casing 2 2nd housing | casing 3 Receiver 3a, 5a Opening 4 Display part 5 Transmitter 6, 10 Printed circuit board 7 Control / sound processing part 8 Hinge part 9 Flexible board 11 Radio | wireless part 12 Key operation part 14, 15, 19, 20 Through hole 16 Notch 17 Connecting member 18 Flexible board reinforcing plate 21 Battery

Claims (7)

[Claims] A first housing having a display unit, a transmitter for transmitting voice to the other party, a receiver for receiving the voice of the other party, a second housing having a key operation unit, A mobile phone, comprising: a hinge portion that foldably connects the first housing and the second housing. 2. The wireless communication device according to claim 1, wherein a wireless unit for transmitting / receiving a communication signal is provided in the second housing, and an audio processing unit for performing a conversion process between the communication signal and the audio signal is provided in the first housing. Item 2. The mobile phone according to Item 1. 3. A transmitter / receiver key for connecting / disconnecting a communication line is provided on a back surface of the first housing or the second housing, and the transmitter is provided in a state where the first and second housings are folded. The mobile phone according to claim 1 or 2, wherein a telephone call can be made using the handset. 4. The mobile phone according to claim 3, wherein a through-hole opening toward a back surface of the first housing is provided on a back side of the transmitter and the receiver. 5. The device according to claim 3, wherein a through hole penetrating the second housing is provided at a position facing the transmitter and the receiver with the first and second housings folded. A mobile phone according to claim 1. 6. A notch formed by notching the second housing,
The mobile phone according to claim 3, wherein the mobile phone is provided at a position facing the transmitter or the receiver in a state where the second housing is folded. 7. The device according to claim 1, wherein the first and second housings are rotated by the hinge portion so that the back surface of the first housing and the back surface of the second housing can be substantially contacted. 1 or Claim 2
A mobile phone according to claim 1.