JPH07221692A - Portable radio equipment - Google Patents

Abstract

PURPOSE:To effectively make the most of a solar battery at the time of the standby when the battery is carried by connecting the battery with portable radio equipment through an extension cable and enabling the battery to be mounted and demounted. CONSTITUTION:As for the power supply to a reception circuit 6 and a transmission circuit 7, a main power source switch 11 is turned ON and a hook switch is turned ON at the time of speech. A power source control circuit 16 makes a reception side switch circuit 9 and a transmission side switch circuit 10 perform the operations of ON or OFF according to the cases of a reception and a transmission. Further, as for a power supply source, power is supplied from either one of a secondary battery 4 or a solar battery 5. The secondary battery 4 is used as an auxiliary one when a sufficient output voltage value can not be obtained from the solar battery 5. When the output voltage value of the solar battery 5 becomes smaller than a necessary minimum value, the power source control circuit 16 switches a charging switch circuit 14 and power is supplied from the secondary battery 4 to each circuit. The solar battery 5 and a portable radio equipment main body are connected by an extension cable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a portable wireless device using a solar battery as a power supply source in addition to a secondary battery.

[0002]

2. Description of the Related Art In recent years, there has been used a portable radio apparatus having therein a rechargeable rechargeable battery such as a NiCd battery which does not require external power supply. However, such a portable wireless device consumes a large amount of power during a call and also consumes power during standby,
It is not practical because it is necessary to carry a charged secondary battery separately. For this reason, in the past,
A portable wireless device as disclosed in Japanese Patent No. 169740 has been devised. This portable wireless device has a solar battery attached in addition to a secondary battery, and uses electric power from the solar battery for powering the main circuit and charging the secondary battery.

[0003]

However, in the above-mentioned conventional configuration, the solar cell is built in the portable wireless device, and therefore, when the portable wireless device is on standby, the portable wireless device is placed in a bag, a pocket of clothes, or the like. If you want to keep it in a place where
The solar cell does not function very often, and in many cases the usage time until the battery runs out does not change much from the conventional wireless power source that uses only a secondary battery as the power supply source, and the effect of having a solar cell is not remarkable Had.

The present invention solves the above-mentioned problems of the prior art. Even when the portable wireless device is held in a place not exposed to light during standby, the solar cell is installed in a place where sufficient light can be obtained. An object of the present invention is to provide a portable wireless device capable of performing the above.

[0005]

In order to achieve this object, a portable radio apparatus according to the present invention has a power supply switching circuit for switching a power supply, a control of each switching circuit, and a solar cell output in a transmission / reception circuit for making a wireless call. Power is supplied from the secondary battery and the solar cell using the power supply control circuit that detects the voltage value, and the solar cell and the portable wireless device body are connected by an extension cable, and can be installed and removed. Have a configuration.

[0006]

With this structure, even when the portable wireless device body is held in a place where it is not exposed to light, such as in a bag or a pocket of clothes, the solar cell is in a place exposed to light away from the portable wireless device body during standby. The solar cell can be used for daylighting.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a block diagram showing the configuration of a portable radio apparatus according to an embodiment of the present invention. In FIG.
Is a radio antenna that serves as an input / output unit for RF signals that are high-frequency signals, 2 is a voice input unit that is an input unit for voice signals, 3 is a voice output unit that is an output unit for voice signals, and 4 is a rechargeable secondary battery. Battery 5 is a solar cell that converts light energy into electric power, 6 is a receiving circuit that converts an RF signal input from the wireless antenna 1 into an audio signal, and 7 is an audio signal input from the audio input unit 2 into an RF signal A transmitting circuit for conversion, 8 is a transmission / reception switching circuit for switching the destination of the RF signal between transmission and reception, 9 is a receiving side switching circuit for electrically turning on and off the power supply source and the receiving circuit 6, and 10 is a power supply source. And a transmission circuit 7 are electrically turned on or off, a transmission side switching circuit, 11 is a main power switch of the portable wireless device, 12 is a hook switch which is a switch for switching between a call and a standby, and 13 is each Power supply switching circuit for performing switching of power to the road, 14 side and a secondary battery 4 to charge the secondary battery 4
Is a charge switching circuit for switching the power supply side to each circuit, 15 is a charger for charging the secondary battery 4 with the solar cell 5, 16 is control of each switching circuit and the solar cell 5
Is a power supply control circuit that detects the output voltage value of the.

The internal configuration of the portable radio apparatus of this embodiment will be described with reference to FIG. First, in a wireless call, when receiving, an RF signal is received by the wireless antenna 1, the received RF signal is converted into a voice signal by the receiving circuit 6 through the transmission / reception switching circuit 8, and output from the voice output unit 3. To be done. At the time of transmission, an audio signal input from the audio input unit 2 is converted into an RF signal by the transmission circuit 7, and is transmitted from the wireless antenna 1 via the transmission / reception switching circuit 8.

Regarding the power supply to the receiving circuit 6 and the transmitting circuit 7, the main power switch 11 is turned on during a call.
The hook switch 12 is ON. When this is input to the power supply control circuit 16, the power supply control circuit 16 causes the receiving side switching circuit 9 and the transmitting side switching circuit 10 to perform an ON or OFF operation depending on the case of reception and transmission. Further, during standby, the main power switch 11 is on and the hook switch 12 is off. When this is input to the power supply control circuit 16, power is required to be supplied only to the receiving circuit 6 because it is in the state of waiting for the input of the RF signal during standby, so that the receiving side switching circuit 9 is ON and the transmitting side switching circuit 9 is ON. 1
When 0 is turned off, power is supplied.

Further, as for the power supply source, the secondary battery 4
Or it is supplied from either one of the solar cells 5,
In this embodiment, the solar cell 5 always supplies electric power, and the solar cell 5 supplies electric power to each circuit during a call and a standby state, and also charges the secondary battery 4 via the charger 15. I am doing it. The secondary battery 4 is used as an auxiliary when the solar cell 5 does not have a sufficient output voltage value, and the output voltage value of the solar cell 5 is constantly set to the power supply control circuit 16
When the output voltage value of the solar cell 5 becomes smaller than the required minimum value, the power supply control circuit 16 switches the charge switching circuit 14 so that the secondary battery 4 supplies electric power to each circuit. .

Next, the external structure of the portable radio apparatus of this embodiment will be described with reference to FIGS. 2 and 3.

FIG. 2 is a perspective view of a portable radio apparatus according to an embodiment of the present invention when a solar cell is attached, and FIG. 3 is a perspective view of the portable radio apparatus according to an embodiment of the present invention when a solar cell is removed. . In FIG. 2 and FIG. 3, 17 is a portable wireless device body, 18 is a solar cell 5 and a portable wireless device body 1.
An extension cable for connecting with 7, a hook 19 which is a stopper provided on the solar cell 5, a rib 20 which is a stopper provided on the solar cell 5, and a reference numeral 21 which receives the hook 19 provided on the main body 17 of the portable wireless device. Hook holes 22 are rib holes for receiving the ribs 20 provided on the portable wireless device body 17.

FIG. 2 shows the case where the solar cell 5 is attached to and fixed to the body 17 of the portable radio apparatus. Use this state when making a call or when the main power switch 11 is off and not in use. Further, in the standby mode, if the portable wireless device can directly receive the light, the state shown in FIG. 2 can be used. If the portable wireless device is kept in a place not exposed to the light, as shown in FIG. Is detached from the portable wireless device main body 17 and used in a state of being connected by the extension cable 18. Here, FIG. 4 is a diagram showing an example of use of the portable wireless device in one embodiment of the present invention, and FIG. 4 which is an example of use is shown.

Further, the solar cell 5 has hooks 19 and ribs 2.
0a, a rib 20b, a hook hole 21, a rib hole 22a, and a rib hole 22b are provided in the mobile wireless device body 17, and when the solar cell 5 is attached to the mobile wireless device 17, the hook 19 is connected to the hook hole 21. Then, the rib 20a is fixed to the rib hole 22a by inserting the rib 20b into the rib hole 22b. Further, as shown in FIG. 4, the hook 19 can also be used to hook the solar cell 5 on a pocket of clothes or the like. As a method of fixing the solar cell 5 to the mobile wireless device body 17, magnets may be attached to the contact surfaces of both the solar cell 5 and the mobile wireless device 17 and fixed by the attractive force. Furthermore, the mounting position of the solar cell 5 to the portable wireless device body 17 is not limited to the position shown in this embodiment.

As described above, according to this embodiment, the solar cell 5 and the portable wireless device main body 17 are connected by the extension cable 18 so that they can be attached and detached. Lighting can be effectively performed.

[0017]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, in a portable wireless device having a conventional secondary battery and a solar cell built therein, the solar battery can be attached to and detached from the portable wireless device by an extension cable. As a result, the solar cell can be effectively used particularly during standby while being carried, and the usage time until the battery runs out becomes long.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a mobile wireless device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a portable wireless device according to an embodiment of the present invention when a solar cell is attached.

FIG. 3 is a perspective view of a portable wireless device according to an embodiment of the present invention when a solar cell is removed.

FIG. 4 is a diagram showing an example of use of a mobile wireless device according to an embodiment of the present invention.

[Explanation of symbols]

 1 Radio Antenna 2 Audio Input Section 3 Audio Output Section 4 Secondary Battery 5 Solar Cell 6 Reception Circuit 7 Transmission Circuit 8 Transmission / Reception Switching Circuit 9 Reception Side Switching Circuit 10 Transmission Side Switching Circuit 11 Main Power Switch 12 Hook Switch 13 Power Supply Switching Circuit 14 Charge switching circuit 15 Charger 16 Power control circuit 17 Portable radio device body 18 Extension cable 19 Hook 20 Rib 21 Hook hole 22 Rib hole

Claims (1)

[Claims] 1. A transmission / reception circuit for making a wireless call, a rechargeable secondary battery, a solar cell for converting light energy into electric power, a secondary battery for supplying electric power to the transmission / reception circuit, and the solar cell. A power source switching circuit for switching the power source, a power source control circuit for controlling each circuit and detecting the output voltage value of the solar cell, and an extension cable connecting the solar cell and the portable wireless device body. Prepare,
The portable wireless device, wherein the solar cell has means that can be attached to and detached from the portable wireless device body.