CN2377791Y

CN2377791Y - Three-in-one noiseproof sound concentrator for radio

Info

Publication number: CN2377791Y
Application number: CN 98209164
Authority: CN
Inventors: 陈义发
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-02-24
Filing date: 1998-02-24
Publication date: 2000-05-10
Anticipated expiration: 2008-02-24

Abstract

The utility model relates to a three-in-one noiseproof sound concentrator for a radio, which provides a headphone device. Three main functions which comprises a noiseproof circuit, a radio circuit, and a sound collecting circuit are integrated. The damage of the noise to the user's ears can be eliminated in the high noise environment. The sound of broadcasting or an external sound source can be heard clearly, wherein, a microphone which is used for receiving the outside noise and is arranged in the noiseproof circuit is arranged on the headphone and the microphone and the headphone are integrated together. Connecting lead wires are hidden in a sleeve pipe. The three-in-one noiseproof sound concentrator for a radio is a device without external connecting wires from the appearance. The disadvantage that a radio device which is provided with a noise microphone is generally an independent structure and needs a connecting wire to be connected to the headphone, and therefore, the connecting line is easily shackled by a foreign object is eliminated.

Description

Three-in-one its anti-noise broadcast receiver sound collector device

The utility model relates to a kind of Headphone device, will prevent noise, listen to radio broadcasting and sound collector three big functions are combined as a whole, and can abate the noise under high noise environments to the injury of people's ear, and can analyse the sound of broadcast listening program or external source of sound clearly.

In recent years, industry is advanced by leaps and bounds, and the non-agricultural society in the past of social structure can compare, and the labourer has accounted for the major part of population structure, thus the labourer realize come back unavoidable.Some are on high noise environments such as airport, the employee of work such as factory, often contact aircraft engine sound, heavy-duty machine engine sound and strike note, the steam turbine car engine sound etc. that travels, under this environment, work for a long time, people's ear injury nature is well imagined, therefore for the protection of employee's hearing, it is one of important topic on the industrial safety, and the general practice all is to require the employee who works under this high noise environments must wear earplug or earphone at any time, with the chronic injury of isolated noise to people's ear, though this practice has certain effect of noise-decreasing intensity, yet empirical evidence also has many inconveniences during actual the use: at first, the noise intensity of operational environment changes at any time, and the noise barriering effect that earplug that general sound insulation is used or earphone only can provide fixation degree, some precipitate high strength noises still can cause chronic injury to people's ear, and its protection effect is had a greatly reduced quality, can not be satisfactory; Have again, this environment personnel of work down also is a problem on talk is linked up, because there is noise jamming in the external world, add the obstruct of earplug or earphone, personnel link up message and often can not effectively pass on, and must with quite closely and take down earplug or earphone could effective communication, quite inconvenience in the use, under this situation, more leisure opinion utilizes earphone to listen to the sound of extraneous broadcasting or external source of sound.Hence one can see that, its anti-noise practice of commonly using, and the convenience used and the adaptability of environment are not considered in the protection that is provided, and its protection effect is not good yet, real difficulty makes the user satisfied.

For adapting to the noise variation that produces the intensity change at any time, the device of commonly using that has utilizes a microphone to receive external noise, and after detecting its intensity and phase place, by sound wave anti-phase of earphone horn output with noise, with noise waveform overlapping after, can produce neutralization effect, reach the function that abates the noise.Though the structure of the more aforementioned simple earplug of its anti-noise effect of this Headphone structure has better its anti-noise effect, but the microphone that its reception noise is used is an individual member, generally all it is worn between waist, and link to each other with the earphone member with a connecting line, yet, user Chang Yin has the relation of a connecting line, suffer inadvertently under the activity situation that object colludes by the side of and stumble, so that cause connecting line to come off and situation such as earphone inefficacy is taken place frequently, deficiency is also arranged in the use, and it only prevents the noise function, can not satisfy user's demand in many ways.

In view of this, the purpose of this utility model is to provide a kind of noiseproof Headphone device, and this device can obtain three-in-one its anti-noise broadcast receiver sound collector device with the collection sound function combination of radio broadcasting function of radio receiver and external sound source input.

Microphone device and earphone member that the utility model mainly will receive external noise are combined into one, and after adding radio reception and collection sound function, become the device of three machine one.

The appearance of this device appearance is succinct, and the inconvenience that does not have external connection line to produce except that having good preventing the noise function, also can be analysed the sound of hearing radio broadcast program and external sound source clearly, is a kind of multi-functional design.

Following conjunction with figs. is done one and is described in detail.

Fig. 1 is a STRUCTURE DECOMPOSITION schematic diagram of the present utility model.

Fig. 2 is an outward appearance configuration schematic diagram of the present utility model.

Fig. 3 (A), (B) are its anti-noise system block diagrams of the present utility model and effect schematic diagram.

Fig. 4 is a radio reception Circuits System calcspar of the present utility model.

Fig. 5 is a collection sound Circuits System calcspar of the present utility model.

Fig. 6 is a synthetic circuit system block diagrams of the present utility model.

Number in the figure is:

1 sleeve pipe, 2 top news, 3 lead-in wires

4 headgears, 5 battery covers, 6 battery spring laminations

7 auricular concha loam cakes, 8 printed circuit board (PCB)s (PC plate) 9AB folder

10 horn wires, 11 loudspeaker, 12 horn chassis

13 fixed screws, 14 foam ear muffs, 15 knobs

101 microphones, 102 phase-detection and amplifying circuit IC

201 amplifying circuit IC, 202 frequency down circuit, 203 detecting circuits

204 demodulator circuit SW1, SW2 switch

VR1, VR2 variable resistor

301, AUX external sound source input

R R channel L L channel

As shown in Figure 1, its structure as Headphone structure, has a sleeve pipe 1, to connect the earphone member at two ends, be equipped with elasticity top news 2 in the sleeve pipe 1 and go between 3, the effect of top news 2 is supporting sleeve 1, goes between 3 then to be hidden in the sleeve pipe 1 to connect the head circuit at two ends, therefore do not see that in appearance any wiring is arranged at all, convenient naturally many in the use.Sleeve pipe 1 below is provided with a soft headgear 4, in order to be placed in that head is gone up and the unlikely user of order produces uncomfortable sensation.Discuss with the earphone member of an end, it is combined with several fixed screws 13 by an auricular concha loam cake 7 and a horn chassis 12, the PC plate 8, one that then comprises a circuit with the effect of this machine between the two is AB folder 9 and one loudspeaker 11 of usefulness fixedly, then link to each other with horn wire 10 between loudspeaker 11 and the PC plate 8.In addition, auricular concha loam cake 7 is provided with a dead slot that holds battery, is provided with a Battery pack shell fragment 6 in the dead slot, the power supply of this machine of formation in order to place battery, and its outside covers with battery cover 5 and constitutes an integral body.Horn chassis 12 outsides are provided with a foam ear muff 14 to contact with people's ear, and more comfortable sensation is arranged when making contact.The Headphone structure of the other end and above similar, except that its auricular concha loam cake 7 be provided with one adjust frequency of radio station when adjusting turn-knob 15 and can be used for listening to radio broadcast program and with an above-mentioned end hold battery components different, all the other structures are identical.

Fig. 2 is a planar configuration schematic diagram of the present utility model.Except that loudspeaker 11 being housed, also be equipped with on the horn chassis 12 of earphone both sides in order to receive the microphone 101 of external noise in order to produce the sound wave.Wherein mainly contain noiseproof Circuits System on the PC plate 8 in (as left side among the figure) in the auricular concha loam cake 7 of a side, its variable resistor VR1 that comprises a phase-detection and amplifying circuit IC 102, a switch SW 1 and an adjustable volume adjusts volume voluntarily for the user.In addition, be provided with an external sound source and import 301 sockets, be connected in the signal input that supplies external sound source on the PC plate 8; Then mainly contain FM, AM radio reception Circuits System on the PC plate 8 on (as right side among the figure) in the auricular concha loam cake 7 of opposite side, it comprises that the variable resistor VR2 and of an amplifying circuit IC 201, a switch SW 2, an adjustable volume adjusts the knob 15 of frequency of radio station; 3 in the lead-in wire that wherein connects both sides earphone member is hidden in the sleeve pipe 1 as described above, so do not connecting under the external sound source situation, the utility model can be finished in appearance completely without external connection, can unexpectedly have the situation of any object yoke connecting line to take place when the user uses.

Characteristics of the present utility model promptly are its anti-noise Circuits System, radio reception Circuits System and collection sound Circuits System three are integrated, and forming one comprehensively has multi-functional Circuits System.The effect of each Circuits System below is described respectively.

Fig. 6 is for integrating above three synthetic circuits that the feature circuit is an one, and its voltage all can operate from 1.5V to 3V, and adopts big dynamic sound press design.The characteristics of this synthetic circuit are no matter radio reception Circuits System or collection sound Circuits System, its signal flow is to all being connected to its anti-noise Circuits System, therefore, not only has good its anti-noise effect, also can analyse ground uppick radio broadcast program or the purest external sound source input clearly, and not influenced by noisy environment.

In sum; three-in-one its anti-noise broadcast receiver sound collector device of the present utility model is the design of multi-functional three machine one; the outward appearance of no wiring is convenient more in the use; under noisy environment, use; not only has good noise-proof performance with protection people ear; the also input of broadcast listening program and external source of sound like a cork, even can utilize the microphone sound collector must not take down earphone etc. with extraneous the communication.

Claims

1. three-in-one its anti-noise broadcast receiver sound collector device, has the earphone member that is connected by sleeve pipe, top news, lead-in wire and headgear, each is made up both sides earphone member by an auricular concha loam cake and a horn chassis, and loudspeaker, PC plate are fixed between the two, and a microphone is contained on the horn chassis; Wherein set circuit is made up of three kinds of Circuits System on the PC plate:

One its anti-noise Circuits System;

One radio reception Circuits System;

One collection sound Circuits System;

It is characterized in that:

Described its anti-noise Circuits System, radio reception Circuits System, collection sound Circuits System three's employed both sides phase-detection and amplifying circuit are together to form single integrated circuit, wherein

Described its anti-noise Circuits System is surveyed both sides phase-detection and the amplifying circuit that microphone is connected to said integrated circuit respectively with two, is connected to the both sides loudspeaker more respectively, so that loudspeaker send the anti-phase sound wave of noise that receives with microphone;

Described radio reception Circuits System has a switch, receive the FM and the AM signal in radio station in order to control, this output switching terminal is connected to the both sides phase-detection and the amplifier circuit of said integrated circuit successively through amplifying circuit, frequency down circuit, detecting circuit and demodulator circuit, be connected to the both sides loudspeaker more respectively;

Described collection sound Circuits System has both sides external sound source input socket, is connected to the both sides phase place and the amplifying circuit of said integrated circuit respectively, is connected to the both sides loudspeaker more respectively.