CN201197140Y - wireless external earphone - Google Patents

Abstract

The utility model discloses a wireless headphone that puts outward. The earphone is characterized in that a loudspeaker with slightly larger power is additionally arranged on the basis of the existing earphone type wireless earphone, and a corresponding loudspeaker amplifying circuit and a corresponding switching circuit are configured, so that a user can work in an earphone mode or a loudspeaker mode through the switching circuit; when the earphone works in a loudspeaker mode, a user can hear normal sound signals without wearing the earphone, the problem that the user wears the earphone for a long time and feels very uncomfortable due to the fact that the user inserts foreign objects into the ears for a long time or the ears are pressed by the earmuffs for a long time is solved, and a lot of convenience is brought to people. In addition, the added call identification circuit, wireless transmission circuit and microphone in the controller can further expand the function of the whole wireless earphone, so that the wireless earphone can be used as a wireless receiving/transmitting device matched with the network telephone, can be used as a wireless VOIP telephone, can be used as a loudspeaker, a conference telephone and the like, and has strong practicability.

Description

wireless external earphone

technical field

The utility model relates to an earphone, in particular to a wireless external earphone which can be worn as an earphone and used as a loudspeaker.

Background technique

Traditional earphones are mainly wired earphones. One end of the wire is connected with an audio plug, and the other end is connected with a small speaker for restoring the sound signal. The power of the small speaker is usually 5-10mW. When assembling, it can be installed in a small earplug. In order to make earplug earphones, it can also be installed in earmuffs to make earmuff earphones, but wired earphones are inconvenient to use, and the appearance of wireless (cordless) technology makes traditional earphones get rid of the shackles of wires. Effective wireless transmission can be realized by setting a wireless sending circuit at the sound source device and setting a wireless receiving circuit in the earphone. After wearing the wireless headset, the user can effectively receive audio signals within a range of 15 meters or even greater.

The principle of the existing wireless earphones is shown in Figure 1. During work, the wireless receiving circuit 1 is used to receive the audio signal sent by the external wireless transmitter, and process it into an analog audio signal and then send it to the earphone amplifier circuit 2 for amplification processing. , and then output to the small speaker 3 in the earphone. The power of the small speaker is usually 5-10mW, so it is only suitable for plugging into the ear or using it close to the ear.

However, whether it is a traditional wired earphone or the latest wireless earphone, all of them are small speakers with less power. When using it, you must plug it into the ear or wear it on the ear to hear the normal sound, otherwise you cannot hear the normal sound, and wearing the earphone for a long time will cause foreign objects to be inserted into the ear for a long time, or the ear will be damaged for a long time. The compression of the earmuffs will make the wearer feel very uncomfortable.

Contents of the invention

In order to overcome the problem that the existing earphones can only be worn and used for a long time, the user will feel very uncomfortable, the utility model provides a wireless external earphone that can be worn as an earphone and used as a speaker.

The technical scheme that the utility model solves its technical problem adopts is:

Wireless external earphones, including left and right earmuffs, intermediate connectors connecting the left and right earmuffs, small speakers respectively installed in the left and right earmuffs, and a controller electrically connected to the small speakers. The controller includes a wireless receiver circuit, the controller includes a switching circuit, the left earmuff and/or the right earmuff are equipped with a speaker; the wireless receiving circuit is connected to a small speaker through the switching circuit, and the other is connected to the speaker through the speaker amplifier circuit.

Since the output signal of the wireless receiving circuit is relatively weak, in order to increase the output power, the switching circuit is connected to the small speakers inside the left and right earmuffs through the headphone amplifier circuit.

As a further improvement of the utility model, the controller includes a wireless transmission circuit for transmitting voice signals, and the wireless transmission circuit is connected with a microphone.

As a further improvement of the utility model, there is also a call identification function for identifying whether there is a call signal and shielding other input signals when there is a call signal between the output end of the wireless receiving circuit and the input end of the switching circuit circuit.

The beneficial effects of the utility model are: the utility model is based on the existing earmuff type wireless earphones, and adds a loudspeaker with a slightly higher power, and configures a corresponding loudspeaker amplifying circuit and a switching circuit, so that the user can pass The switching circuit adjusts the working mode of the whole wireless earphone to make it work in the earphone mode or the loudspeaker mode. When working in the speaker mode, the user can hear the normal sound signal without wearing the earphone, which solves the problem that the user wears the earphone for a long time. The present situation that makes the wearer feel very uncomfortable brings many conveniences to people. In addition, the controller of the utility model is additionally equipped with a call identification circuit, a wireless transmission circuit, and a microphone, further expanding the functions of the entire wireless earphone, making it a wireless call receiving/sending device that can be used in conjunction with Internet phones, and can be used as It can be used as a wireless VOIP phone, and can also be used as a speaker, conference phone, etc., which is very practical.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

FIG. 1 is a schematic diagram of an existing wireless external earphone;

Fig. 2 is a schematic diagram of a wireless external earphone in an embodiment;

Fig. 3 is a schematic diagram of a wireless external earphone in another embodiment;

Fig. 4 is a circuit diagram of the main part of the wireless external earphone in a preferred embodiment;

Fig. 5 is the circuit diagram of switching circuit, small horn and loudspeaker part coordinated with Fig. 4;

Fig. 6 is a schematic diagram of the appearance and structure of the wireless external earphone in a preferred embodiment of the present invention;

Fig. 7 is a left side view of Fig. 6 .

Detailed ways

Referring to Fig. 2 to Fig. 7, the wireless external earphone comprises left and right earmuffs 10, an intermediate connector 11 connecting the left and right earmuffs 10, small speakers 3 installed inside the left and right earmuffs 10 respectively, The speakers 6 on the outside of the left and right earmuffs 10 and the controller electrically connected to the small speaker 3 respectively, the controller includes a wireless receiving circuit 1 and a switching circuit 4, and the wireless receiving circuit 1 is amplified through the switching circuit 4 all the way through the earphone The circuit 2 is connected to the small speaker 3, and the other circuit is connected to the speaker 6 through the speaker amplifier circuit 5. Specifically, the switching circuit 4 can be realized with a double-pole double-throw mechanical switch, or can be realized with a switch tube circuit, which is controlled by the user and can output the analog audio signal to the earphone amplifier circuit or the speaker amplifier circuit, and the user The working mode of the whole wireless earphone can be selected by switching the circuit to make it work in the earphone mode or the loudspeaker mode. When working in the speaker mode, the audio signal is played by the speaker, so that the user can hear the normal sound signal without wearing the earphone, which solves the problem that the user wears the earphone for a long time, and the ear is plugged with foreign objects for a long time, or Ears are oppressed by earmuffs for a long time, which makes the wearer feel very uncomfortable, which brings many conveniences to people.

As shown in FIG. 3 , as a preferred mode of the present invention, this embodiment further adds a call recognition circuit 7 , a wireless transmission circuit and a microphone 8 on the basis of the circuit shown in FIG. 2 . Wherein the call identification circuit 7 is used to identify whether there is a call signal, and shield other input signals when there is a call signal, and specifically can identify whether there is a call signal by the ring tone when an incoming call or the dial tone when dialing out a call. In this way, the wireless earphone can become a wireless call receiving/sending device that can be used in conjunction with a fixed phone or a mobile phone.

Referring to Fig. 6 and Fig. 7, as a schematic diagram of the outline structure of a wireless earphone in a preferred embodiment of the present invention, during specific implementation, the power supply unit (usually a battery), the wireless receiving circuit 1, the wireless transmitting circuit, and the earphone amplifying circuit can be 2. The loudspeaker amplification circuit 5, the call recognition circuit 7, and the microphone are all assembled in one of the earmuffs, or a part of them can be installed in the left earmuff, and the other part can be installed in the right earmuff, and the switching circuit 4 It can be installed in an easily adjustable position.

As shown in Figure 4, U2 and its peripheral components form a battery protection circuit. LED1 in the figure is the charging indicator light, which is blinking when the battery is charging, and is always on after charging is completed. LED2 is the connection indicator light. When the wireless headset is connected to the wireless transmitter shown in Figure 6, the light is always on, otherwise the light is off. S1 and S2 in the figure are volume adjustment buttons, and S3 is a power switch.

It can be seen from Figure 5 that a double-pole, double-throw mechanical switch is used as a switching circuit. After the analog audio signal output in Figure 4 is sent to the switch in Figure 5, the switch can be selected to output to a small speaker or a loudspeaker. The amplifying circuit, the speaker amplifying circuit outputs the amplified signal to the speaker. The figure shows a small speaker and a speaker with two channels.

When using this wireless headset to listen to music, you can choose to use the headset mode or the speaker mode; during listening to music, if there is a VOIP call incoming, the wireless transmitter will transmit the ringing signal of the incoming call to the wireless headset, at this time, the wireless headset The internal microprocessor will shield the music signal, and send out a ringing tone to remind the user to answer the call. After the user chooses to answer the call by pressing the corresponding button, the user can enter the call mode. It can be seen that this wireless external earphone can be used as a wireless VOIP phone, and can also be used as a speaker, a conference phone, etc., and has strong practicability.

Claims (7)

1. Wireless external earphones, including left and right earmuffs (10), intermediate connectors (11) connecting the left and right earmuffs (10), small speakers ( 3) and a controller electrically connected to the small horn (3), the controller includes a wireless receiving circuit (1), and it is characterized in that the controller includes a switching circuit (4), and the left earmuff and/or right earmuff A loudspeaker (6) is installed; one path of the wireless receiving circuit (1) is connected to the small speaker (3) through the switching circuit (4), and the other path is connected to the loudspeaker (6) through the loudspeaker amplifier circuit (5). 2. The wireless external earphone according to claim 1, characterized in that the switching circuit (4) is connected to the small speaker (3) via the earphone amplifier circuit (2). 3. The wireless external earphone according to claim 1, characterized in that the small speakers (3) are respectively mounted on the inner sides of the left and right earmuffs (10). 4. The wireless external earphone according to claim 1, characterized in that the controller comprises a wireless transmission circuit for transmitting voice signals, and the wireless transmission circuit is connected with a microphone (8). 5. The wireless external earphone according to claim 1, characterized in that the output end of the wireless receiving circuit and the input end of the switching circuit (4) are connected to be used to identify whether there is a call signal, and when there is A call identification circuit (7) that shields other input signals during a call signal. 6. The wireless external earphone according to claim 1, characterized in that said left and right earmuffs (10) are respectively equipped with a speaker (6), and two speakers (6) are installed on the left and right ears the outside of the cover (10). 7. The wireless external earphone according to claim 1, characterized in that said wireless receiving circuit (1), wireless transmitting circuit, earphone amplifying circuit (2), speaker amplifying circuit (5), switching circuit (4) Be concentrated in one of the earmuffs (10) or scattered in the left and right earmuffs (10).

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