CN2096850U - Radio earphone - Google Patents

Abstract

The utility model relates to a new style radio earphone whose structure is that a radio receiver (1) and a battery box (2) are installed on an original earphone, and a radio transmitter (3) is arranged on a corresponding electric appliance; the radio transmitters (3) sends the sound signal to the radio receiver (1), and then the sound signal is returned to the sound provided to people for appreciation. Thus, people can appreciate music when walking, can appreciate music when isolated by a wall, and can play disco or kara-ok with the earphone on.

Description

Radio earphone

The utility model is a kind of novel radio control earphone stereo set, on electric equipments such as television set, recorder, video tape recorder.Traditional ear speaker device is to connect with electric wire to use, electric wire flows to earphone to voice signal, Headphone device is sounded and is appreciated separately for people then, and use the electric wire connection method to carry voice signal very inconvenient, people can not have on earphone indoor while moving music appreciating or listen sound of television, more can not be across the wall music appreciating.

In order to address this problem, way is to increase earphone to carry the length of sound electric wire or this electric wire is made resilient helical structure usually.Even like this, can not have on earphone and walk about indoor, can not listen to the music across wall, more can not have on earphone and do disco and play Karaoka.

The purpose of this utility model provides the Radio earphone acoustics after a kind of the improvement.It can effectively be listened to the music while walking at indoor or outdoors, also can listen to the music or listens to television audio signals across wall.

The purpose of this utility model is to realize like this, a radio receiver and the battery case that can adorn No. 5 batteries of 2 joints are installed on traditional earphone, on corresponding electric equipment (as television set, recorder, video tape recorder) a radio message transmission device is installed, it can " heavily add the voice signal from these stereo sets " launches on electromagnetic wave, then, again the radio receiver on this earphone is received this sound audio signals, be reduced into sound through handling again, required according to different electrical appliances, wireless headset is divided into two kinds, a kind of is the monophony Radio earphone, another kind is a two-channel sterearphone, the monophony Radio earphone can be used on general television set and the common video tape recorder, and stereo Radio earphone generally is used on the stereo recorder, like this, can not change original stereophonic effect and quality.

The utility model is because only need add a radio transmitter and radio receiver and the battery case that can lay two No.5 cells, so do not change the legacy equipment of electrical appliances such as original television set, recorder or video tape recorder on original equipment.Simultaneously because the starting point is earphone system, so, it to original equipment use aspect without any specific (special) requirements.

Concrete structure of the present utility model is drawn by following embodiment and accompanying drawing thereof.Fig. 1 is the structure chart of Radio earphone.

Fig. 2 is the circuit theory diagrams of the block diagram of mono headset.

(a) Transmitter side block diagram (b) receiver block diagram (c) acceptor circuit schematic diagram.

Fig. 1 is the Radio earphone audio-visual picture that proposes according to utility model.

Provide Fig. 1 below and describe details and working condition in detail according to the concrete device that the utility model proposes.

This device comprises two parts, first's radio transmitter part, and second portion is the radio receiver part.

First has: transmitter main body (1), a transmitting antenna (2) is arranged on the body, and on the body headset plug (3) is arranged simultaneously.

Second portion has: radio receiver (4), and a reception antenna (5) is arranged on this receiver, there is a baby battery box (6) that No. 5 batteries of 2 joints can be installed on corresponding the right, also have two earphones, be respectively the right earphone (7) and left earphone (8), two spring leafs (9) that earphone links to each other.

Fig. 2 is monophony Radio earphone system block diagram and acceptor circuit schematic diagram.

Fig. 2 b is a Radio earphone receiver block diagram.

At first, we insert the headset plug (3) on the earphone transmitter main body (1) on the corresponding electrical appliance.Voice signal " is added " on oscillator, modulate through on the modulator then, launch with the form of radio wave by transmitting antenna, corresponding have a receiver, electromagnetic wave acts on the receiver antenna and produces electric current, is reduced into voice signal through tuning → high frequency amplification → detection → low frequency amplification → earphone again.

Fig. 2 c is the Radio earphone circuit theory diagrams.Can do reference, this schematic diagram is a transistorized circuitry, in order to make the volume miniaturization of receiver and transmitter, we can use this circuit a slice integrated circuit, replace, so promptly can reduce the volume of Radio earphone system, can improve its work accuracy and accuracy again, simultaneously, can reduce cost, reduce transmitting power, prevent electromagnetic wave " pollution " space.

Particularly point out at last, because the advantage of integrated circuit is outstanding, above Radio earphone system can replace with integrated circuit, in order not make this class Radio earphone system cause the interference of radio wave to the space, we use the low power transmissions radio wave, the effective range that makes it can prevent effectively that like this this electromagnetic wave pollutes the space and causes public hazards between 20-25 rice.

Claims (1)

1, with a kind of Radio earphone of at home television set, video tape recorder, recorder, it is characterized in that this device has a radio message transmission device (1), a transmitting antenna (2) is arranged on the transmitter, equally, one headset plug (3) is arranged on it, corresponding have a radio receiver (4), and a radio receiving antenna (5) is arranged on this receiver, Yi Bian there is one can adorn 2 joint No. 5 battery cases (6) and two earphones accordingly.

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