JP2001251207A - Mobile phone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a mobile phone that can prevent continuous phone call time or a continuous waiting time from being decreased or to provide a mobile phone, that can make the sizes peripheral devices small and reduce their weight. SOLUTION: The mobile phone provided with a circuit board, on which a high frequency circuit section having a transmission reception function, a voice circuit section connected to the high-frequency circuit section, a control means controlling the high-frequency circuit section and the voice circuit section are mounted, with a case containing the circuit board, with a transmitter provided at one end in the case, with a receiver provided at the other end, with a battery chamber formed in the case to contain a charging battery, and with a battery chamber cover covering the battery chamber and provided in the case, is provided with a charging terminal provided at a transmitter side end of the case and exposed to the outside of the case and with a charging circuit that has a reverse current flow prevention function and a protection function for supplying a current supplied to the charging terminal to the charging battery.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a portable telephone using a rechargeable battery, and more particularly to a portable telephone suitable for preventing spontaneous discharge even when a charging terminal is exposed.

[0002]

2. Description of the Related Art In a conventional telephone, a charging current supply terminal in a charging holder is electrically connected to a charging terminal of the mobile telephone by simply mounting the mobile telephone on a desktop charging holder. The charging terminal is electrically connected directly to the terminal of the rechargeable battery because the terminal is exposed outside the housing and the voltage of the rechargeable battery is low so that there is no risk of electric shock. Therefore, in a normal use state, the voltage of the rechargeable battery is directly applied to the charging terminal exposed outside the housing of the mobile phone.

[0003] Japanese Patent Application Laid-Open No. 5-167498 discloses a technique related to the above prior art.
To FIG. 10.

Further, when transmitting a signal or data received by a portable telephone to another device, the device receiving the signal or data transmitted from the portable telephone also requires a battery as a power supply.

[0005]

A portable telephone is often carried in a pocket of a user's clothes. In this case, especially in summer, the user may sweat and moisture and salt may adhere to the mobile phone. Generally, a mobile phone has a transmitter at one end and a receiver at the other end, an antenna protruding from the housing on the receiver side, and a charging terminal and other terminals on the transmitter side. It has a structure in which a connector for transmitting a signal or data to a device is provided. The connector is installed in the housing and a cover is provided,
This cover is normally closed except when connecting other devices. Therefore, the user often stores the mobile phone in the pocket with the receiver side with the antenna facing up, that is, with the charging terminal down so that the mobile phone can be stably stored in the pocket. On the other hand, the charging terminal was exposed outside the housing of the mobile phone, and the voltage of the rechargeable battery was applied as it was. If the user sweats a lot in this state, the inside of the pocket becomes wet with high temperature and humidity, and the rechargeable battery is discharged through moisture or salt attached to the end where the charging terminal of the mobile phone is located. In some cases, the continuous talk time or continuous standby time may be reduced earlier. This discharge is a very weak current and does not affect the user's body.

When transmitting a signal or data received by a portable telephone to another device (hereinafter referred to as a peripheral device), a peripheral device which receives the signal or data transmitted from the portable telephone also serves as a power supply. Since a battery was required, the size and weight of peripheral devices were increased.

An object of the present invention is to provide a portable telephone capable of preventing a reduction in continuous talk time or continuous standby time, or a portable telephone capable of reducing the size and weight of peripheral devices.

[0008]

In order to achieve the above object, the present invention provides a high-frequency circuit having a transmitting / receiving function, an audio circuit connected to the high-frequency circuit, a high-frequency circuit, and a control for controlling the audio circuit. A circuit board on which the means are mounted, a housing for storing the circuit board, a transmitter provided at one end of the housing and a receiver provided at the other end, and a rechargeable type formed in the housing. A charging terminal which has a battery chamber for storing a battery and has a housing provided with a battery chamber cover for covering the battery chamber, the charging terminal being disposed at a transmitter-side end of the housing and being exposed outside the housing. And a charging circuit having a backflow prevention function and a protection function to supply the current supplied to the charging terminal to the rechargeable battery.

In a preferred embodiment, the battery compartment lid is formed separately from the rechargeable battery.

[0010] In a second preferred embodiment, the portable telephone has a power supply terminal arranged at the transmitter side end of the housing and configured to supply power from a rechargeable battery.

In a third preferred embodiment, the second
In addition to the configuration of the embodiment, the battery chamber lid is configured to be openable and closable, and the power supply terminal is configured to be exposed with the battery chamber lid opened.

In a fourth preferred embodiment, the second
In addition to the configuration of the embodiment, the battery chamber lid is configured to be detachable, and the power supply terminal is configured to be exposed with the battery chamber lid removed.

[0013]

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
This will be described with reference to FIGS. As shown in FIGS. 1, 2, and 4, in the present embodiment, a high-frequency circuit unit 20 having a transmission / reception function, an audio circuit unit 30 electrically connected to the high-frequency circuit unit 20, and a high-frequency circuit unit The control means 40 for controlling the audio circuit unit 20 and the audio circuit unit 30 are mounted on a circuit board 60. As shown in FIG. 2, the circuit board 60 is stored in a housing 70 including a case 70b and a cover 70a. A transmitter 80 is mounted on one end of the circuit board 60 facing the inside of the cover 70a, and a receiver 90 is mounted on the other end. Although not shown in FIG. 2, the display unit 5 is provided between the receiver 90 and the transmitter 80 on the circuit board 60.
0 and an input key 45 are mounted. A ring tone generator 95 is mounted on the circuit board 60 at a position behind the display unit.
The ringtone generator 95 reproduces a ringtone melody with vibration in the audible frequency band or generates a ringtone alarm due to vibration in a low frequency range outside the audible frequency band.

As shown in FIG. 1, a battery chamber 70c for housing the rechargeable battery 2 is formed in the case 70 on the case 70b side. The battery compartment 70c is formed with an opening for attaching and detaching the rechargeable battery 2, and the battery compartment lid 3 is detachably attached to this opening. In the present embodiment, the battery chamber cover 3 is formed separately from the rechargeable battery 2. This allows the rechargeable battery 2 to be used when a plurality of colors of the housing 70 are prepared as an assortment, or when a different mark or carrier name is displayed on the battery compartment cover 3 for each communication carrier (carrier) to be delivered. It can be dealt with by changing the battery chamber lid 3 to match the color of the housing 70 or to the specifications of the carrier in common.
Even if a large number of rechargeable batteries 2 are charged in advance, flexibility can be easily used, and productivity is improved.

An antenna 10 is provided on the receiver 90 side of the housing 70.
0 is provided to protrude from the housing, and a connector 110 for transmitting a signal or data to the charging terminal 4 and another device (hereinafter, peripheral device (not shown)) is provided on the transmitter 80 side.
The connector 110 is mounted on the circuit board 60 and installed in the housing 70. The connector 110 is provided with a cover 70d for protecting an electrical connection portion, and the cover 70d is normally closed except when a peripheral device is connected. On the other hand, the charging terminal 4 is disposed at the end of the case 70 on the transmitter 80 side, and is exposed outside the case 70 via the opening 70 f of the case 70 b and the opening 3 a of the battery compartment cover 3. As shown in FIG. 4, the charging terminal 4 is electrically connected to a power supply terminal 12 for the rechargeable battery 2 via a charging circuit 10 having a backflow prevention function and a protection function. As shown in FIG. 2, the power supply terminal 12 is exposed in the battery compartment 70c through an opening 70h facing the battery compartment 70c of the case 70b, and when the rechargeable battery 2 is mounted in the battery compartment 70c. The electrical connection is obtained by contacting the terminal 2a of the rechargeable battery 2. The charging circuit 10 includes a diode and a current limiting circuit or a voltage limiting circuit, and has a backflow prevention function and a protection function. Thus, when the user places the mobile phone in the pocket with the receiver side with the antenna facing up, that is, with the charging terminal down, the user sweats and moisture and salt are removed from the mobile phone. Since the voltage of the rechargeable battery 2 is not applied to the charging terminal 4 even if it adheres to the battery, discharge of the rechargeable battery 2 due to moisture or salt can be prevented.

In the present embodiment, a power supply terminal 14 configured to supply power from the rechargeable battery 2 is provided at the end of the housing 70 on the transmitter 80 side.
The power supply terminal 14 is exposed with the detachable battery chamber cover 3 removed, and the power supply terminal 14 is covered by the battery chamber cover 3 when the battery chamber cover 3 is mounted. It is configured not to be exposed to the outside of the housing 70. The power supply terminal 14 is electrically connected to the terminal 2a of the rechargeable battery 2 via the power supply terminal 12, and a voltage is constantly applied when the rechargeable battery 2 is mounted.
The power supply terminal 14 is used when the battery chamber cover 3 is removed and the peripheral device 5 is mounted thereafter, as shown in FIG. The peripheral device 5 can be attached to the opening of the battery compartment 70c, like the battery compartment cover 3. 3 and 5
As shown in FIG. 5, the peripheral device 5 is provided with a pair of connection terminals 5a for obtaining electric power from the rechargeable battery 2, and when the peripheral device 5 is mounted in the opening of the battery chamber 70c, the connection terminals 5a Is connected to the power supply terminal 14 and the other is connected to one of the charging terminals 4. In this case, one of the charging terminals 4 is commonly used as a ground side, and a charging circuit 10 is provided between the other of the charging terminals 4 and the power supply terminal 12 to prevent backflow and protect.

In the above embodiment, the battery chamber cover 3 is configured to be detachable. However, the present invention is not limited to this.
May be openably and closably attached to the housing 70 via a hinge so that the power supply terminal 14 is exposed when the battery chamber cover 3 is opened.

Examples of the peripheral device 5 include a Bluetooth terminal to which signals and data are wirelessly transmitted from a mobile phone, and a function for reproducing or storing software such as music and games distributed via the mobile phone. It has. In the present embodiment, since power is supplied from the mobile phone to the peripheral device 5, the peripheral device 5 does not require a battery as a power supply, and the size and weight of the peripheral device 5 can be reduced. In addition, since the power supply of the peripheral device 5 can be shared with the mobile phone, a power adapter is not required, and the peripheral device 5 is easily carried.

FIG. 6 shows a case where the peripheral device 5 is also used as a desktop charging holder for charging. A power supply voltage (for example, AC100V50 /
(60 Hz) is converted into a voltage and current suitable for charging the battery. The output of the charging adapter 300 is supplied to the desktop charging holder 5 via the connector 310. In this case, the battery compartment lid 3
A cover that can be opened and closed is provided at a portion that covers the power supply terminal 14 of the power supply. The terminal 14 is exposed. The connection terminal 55 in the desktop charging holder is electrically connected to the power supply terminal 14, and power is supplied to the peripheral device 5. In this embodiment, the peripheral device 5 can be used while utilizing the charging time. In addition, since the peripheral device 5 is supplied with power from the mobile phone, it can be used even when the charging adapter 300 is disconnected from the power outlet 200. In addition, while the power is supplied from the charging adapter 300, the peripheral device may take power from the charging adapter 300 side.

[0020]

According to the present invention, it is possible to obtain a portable telephone capable of preventing a reduction in continuous talk time or continuous standby time or a portable telephone capable of reducing the size and weight of peripheral devices.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a battery compartment cover and a rechargeable battery of a mobile phone according to an embodiment of the present invention are removed.

FIG. 2 is an exploded perspective view showing a configuration of the mobile phone according to one embodiment of the present invention.

FIG. 3 is a perspective view showing a state in which a peripheral device is attached to the mobile phone according to the embodiment of the present invention.

FIG. 4 is a block diagram showing a circuit configuration of the mobile phone according to one embodiment of the present invention.

FIG. 5 is a block diagram showing a power supply unit for a peripheral device of the mobile phone according to one embodiment of the present invention.

FIG. 6 is a perspective view showing a state in which another peripheral device is attached to the mobile phone according to the embodiment of the present invention.

[Explanation of symbols]

2: Rechargeable battery, 3: Battery compartment lid, 4: Charging terminal, 1
0: charging circuit, 14: power supply terminal, 20: high frequency circuit, 30: audio circuit, 40: control means, 60: circuit board, 70: housing, 70c: battery compartment, 80: transmitter 9
0: handset.

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshihiko Shiohara 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside Hitachi Image Information Systems Co., Ltd. (72) Maki Ito 1410 Inada, Hitachinaka-shi, Ibaraki Hitachi, Ltd. F-term (reference) in Digital Media Products Division of Manufacturing Works 5K011 AA03 AA08 DA29 JA01 KA01 KA03 KA14 5K023 AA07 LL04 NN07 5K027 AA11 BB17 GG04 KK06 5K067 AA42 AA43 BB04 EE02 KK00 KK06

Claims (5)

[Claims] A circuit board on which a high-frequency circuit unit having a transmitting / receiving function, an audio circuit unit connected to the high-frequency circuit unit, and control means for controlling the high-frequency circuit unit and the audio circuit unit are mounted; A housing for storing the board, a transmitter provided at one end of the housing and a receiver provided at the other end, and a battery chamber formed in the housing to store a rechargeable battery, A housing provided with a battery compartment cover for covering the battery compartment; a charging terminal disposed at the transmitter side end of the housing and exposed outside the housing; a backflow prevention function and protection; A mobile phone comprising: a charging circuit having a function of supplying a current supplied to the charging terminal to the rechargeable battery. 2. The mobile phone according to claim 1, wherein said battery chamber cover is formed separately from said rechargeable battery. 3. The power supply terminal according to claim 1, further comprising a power supply terminal disposed at the end of the housing on the side of the transmitter and configured to supply power from the rechargeable battery. Mobile phone. 4. The portable telephone according to claim 3, wherein said battery compartment cover is configured to be openable and closable, and wherein said power supply terminal is exposed when said battery compartment cover is opened. 5. The mobile phone according to claim 3, wherein said battery compartment cover is detachably provided, and said power supply terminal is exposed with said battery compartment cover removed.