KR20070000812U - Rechargeable FM radio and additional battery for mobile phone by USB port - Google Patents

Abstract

The present invention relates to an FM radio for charging a rechargeable battery using a USB port and a device using the rechargeable battery as a spare battery for a mobile phone. The charger for charging a battery includes a USB port such as a computer or a laptop. USB connection for connecting and receiving power, charging circuit and protection circuit for charging the rechargeable battery from this power source, displaying the charging status of the rechargeable battery, having a small flashlight function, and powered by a rechargeable battery. In addition, a secondary battery for supplying the power of the rechargeable battery to the mobile phone, characterized in that consisting of a USB cable function for a mobile phone to connect the USB connection to the mobile phone.

FM radio, rechargeable battery, USB, mobile phone

Description

Rechargeable FM radio and additional battery for mobile phone by USB port}

1 is a block diagram of the contents of the present invention.

Figure 2 is a perspective view showing an embodiment that can be implemented by the present invention.

3 is a perspective view showing a charger of a general portable telephone.

4 is a perspective view of a coupling to function as an auxiliary battery of a mobile telephone.

Fig. 5 is a perspective view of a combination for charging a mobile phone from a computer or laptop.

※ Explanation of codes for main parts of drawing

1: USB connection

2: display unit

3: high brightness light emitting diode

4: rechargeable battery

5: charging circuit

6: power supply

7: key input unit

8: central control unit (microprocessor)

9: earphone connection

10: FM receiver

11: cell phone connection

The present invention relates to a device that uses a universal serial bus (USB) port to charge a rechargeable battery to drive FM radio or use it as a secondary battery of a mobile phone.

3 is a view showing a charger for a mobile phone commonly used in homes. These chargers are bulky and heavy, which makes them inconvenient to carry, so mobile phone chargers are usually left at home.

In addition, it is not efficient to supply power to the mobile phone by converting to low voltage direct current using a relatively high voltage AC power. As DMBs are installed in mobile phones, battery usage is increasing, and the battery life of the mobile phones is limited, so the battery usage time is decreasing.

As Korea has become an information technology (IT) powerhouse, computers and laptops have become a necessity both at home and in the company. The computer or laptop has a USB connection port, which provides 5V of power. Therefore, charging your phone using USB is a convenient way to charge your work, school, or home.

Even if you don't have a charger for a cell phone, such as driving a car, walking, exercising, etc., or if you don't have a home outlet, there are many situations when the battery of a cell phone is exhausted. At this time, the rechargeable battery used in the compact FM radio according to the present invention can be used as an auxiliary power source of the mobile phone.

The purpose of the present invention is to charge a rechargeable battery by receiving power from a USB connection port while using a computer or laptop, and to use this rechargeable battery to drive an FM radio, and in some cases as a secondary battery of a mobile phone. To make it available. In consideration of the safety of the user, the rechargeable battery has a protection circuit that prevents overcurrent and overdischarge and displays the state of charge using a light emitting diode so as to visually check whether the battery is charged. The D + and D- terminals of the USB connection port pass through the handset connection for the USB connection of the handset.

In order to control the FM radio, a microprocessor is mounted, and a switch is mounted on the key input unit so that the microprocessor can recognize the operation of the switch so that it can be operated according to the user's requirements. In addition, the circuit is designed to use the earphone as an antenna for the FM radio, so it is easy to carry by minimizing the volume.

Referring to the embodiment of Figure 2 according to the present invention has a function of FM radio, rechargeable battery, auxiliary battery for mobile phone, mobile phone charger and small flashlight.

There are two external connections, the 1 USB connection of Fig. 1 and the 11 cellular phone connections of Fig. 1. The 1 USB connection of Fig. 1 is connected to a USB port of a computer or a notebook and the like is charged by supplying current to the 4 charging batteries of Fig. 1 by the 5 charging circuits of Fig. 1. The charging circuit of FIG. 1 adjusts the charging current so that the charging battery of FIG. 1 does not become excessive, and when charging is completed, blocks the charging current to prevent overcharging of the battery. It also uses a protection circuit to prevent the battery from overcurrent flow and to prevent overdischarge to ensure the long life of the rechargeable battery. The display unit 2 of FIG. 1 displays such a charging state. The three high brightness light emitting diodes of FIG. 1 operate by receiving one key input from the seven key inputs of FIG. The high-luminance light emitting diode portion of FIG. 1 functions as a flashlight illuminating a dark place.

In the six power supply unit of FIG. 1, power is supplied from the four rechargeable batteries of FIG. 1 to supply stable DC power to the 8 central control unit of FIG. 1 and the 10 FM receiver of FIG.

The 8 central control unit of FIG. 1 senses key input from the 7 key input unit of FIG. 1 to set the reception broadcast of the FM radio and to adjust the reception volume.

When the earphone is inserted into 9 of FIG. 1, the earphone serves as an antenna for the 10 FM receiver of FIG. 1 to receive radio waves. The 10 FM receiver of FIG. 1 sends demodulated broadcast signals to the earphones.

The 11 cellular phone connection of Fig. 1 is connected to the cellular phone and is supplied with power from the 1 USB connection of Fig. 1 connected to the USB port of the computer or notebook computer. In addition, the output terminal of the 4 rechargeable battery of FIG. 1 is connected to the rechargeable battery inside the mobile phone through the 11 mobile phone connection part of FIG. 1 to supply power to the mobile phone when the battery of the mobile phone battery is depleted.

According to the present invention, you can use a small FM radio without purchasing a commercial battery by recharging the rechargeable battery using a USB port of a computer or a notebook, and connecting a mobile phone while using a computer or a notebook without using a separate home charger The USB port allows you to charge your phone and communicate between your phone and your computer without the need for a USB cable for your phone. At this time, you can use USB extension cable when the connection is difficult. In addition, it is possible to check the charging status when charging and it is designed to stop charging automatically when fully charged. It is equipped with a high-brightness light emitting diode and provides a function of brightly illuminating in a dark place, so it is small and highly useful.

Claims (5)

Rechargeable battery with a built-in USB connection to connect to a USB port of a computer or notebook, and a rechargeable battery to store the supplied power. The FM radio of claim 1 which operates using the power of this rechargeable battery. The mobile phone auxiliary battery according to claim 1, which supplies power of a rechargeable battery through a mobile phone connection part for connecting to a mobile phone. The compact flashlight function of claim 1, wherein the rechargeable auxiliary battery operates a high brightness light emitting diode using a power source. A USB connection cable function for mobile phones that connects to a USB port on a computer or notebook and sends and receives power and signals, and a mobile phone connection section that connects this USB power and signal to a mobile phone.

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