CN208424726U

CN208424726U - Ultrasonic horn

Info

Publication number: CN208424726U
Application number: CN201821061515.2U
Authority: CN
Inventors: 张京京; 杨剑锋; 闫磊
Original assignee: Chongqing Qingwen Technology Co Ltd
Current assignee: Chongqing Qingwen Technology Co Ltd
Priority date: 2018-07-05
Filing date: 2018-07-05
Publication date: 2019-01-22
Anticipated expiration: 2028-07-05

Abstract

The utility model provides a kind of ultrasonic horn, comprising: ultrasonic array loudspeaker, for being ultrasonic signal transmitting transmission by modulates audio signals；The transmission direction of the ultrasonic array loudspeaker, ultrasonic signal described in orienting reflex is arranged in reflector in the form of angle.By being arranged to the reflector of tilt angle, enable the ultrasonic signal exported in directional transmissions, meanwhile, reduce ultrasonic signal because of noise brought by loudspeaker resonance, improves the directive property of voice directional spreading and the clarity of audible signal.

Description

Ultrasonic horn

Technical field

The utility model relates to orient acoustic transmission technique field, more particularly to a kind of ultrasonic horn.

Background technique

Traditional loudspeaker is based on a kind of linear shape model, i.e. the absorption energy of air dielectric and the sound wave of generation is linear Relationship.The loudspeaker sound wave without directive property of radiation frequency in AF segment limit directly into air.

Demand of the today's society to the loudspeaker with high directivity is growing day by day, and traditional loudspeaker is difficult to realize height and refers to Tropism.Since an important feature of ultrasonic wave is exactly when propagating in air with high directive property, ultrasonic technology It can be using in this regard.But the band limits of ultrasonic wave has been more than the receivable audio range of human ear.Therefore, it can incite somebody to action Audible sound (within frequency 20KHz) is modulated on ultrasonic wave, by the high directivity of ultrasonic wave, by audible sound with boundling Mode is sent out.During transmission, which interacts with air, referred to as " from demodulating ", by audible sound It demodulates and, this process realizes the effect that audible sound is transmitted in a manner of boundling, and ultrasonic wave is due to its frequency height, in sky Gradually dyingout falls in gas.

However, existing ultrasonic horn can reflect always during direction propagation, work as ultrasonic signal It can be reflected when encountering object in the transmission, meanwhile, ultrasonic signal in the transmission can be also with the nonlinear contact of air Original is at audible signal；Audible sound through air demodulation has apparent directive property and increasing with frequency, and ultrasound is adjusted The directive property of width signal is more and more stronger；But ultrasonic signal is when being transferred to recipient, because reflection reason causes recipient to be connect The audible signal of receipts is unintelligible poor with directive property.

Utility model content

In view of the foregoing deficiencies of prior art, the purpose of this utility model is to provide a kind of ultrasonic vocalization dresses It sets, the ultrasonic signal for solving ultrasonic horn transmitting in the prior art causes recipient institute is received can in the presence of reflection Listening poor TV signal is clear with the poor problem of directive property.

In order to achieve the above objects and other related objects, the utility model provides a kind of ultrasonic horn, comprising:

Ultrasonic array loudspeaker, for being ultrasonic signal transmitting transmission by modulates audio signals；

The transmission direction of the ultrasonic array loudspeaker is arranged in the form of angle, is surpassed described in orienting reflex for reflector Acoustic signals.

In a preferred embodiment of the utility model, 15~75 degree of the angular range.

In a preferred embodiment of the utility model, the angle is 45 degree.

In a preferred embodiment of the utility model, the reflecting surface of the reflector is smooth surface structure.

In a preferred embodiment of the utility model, the shape of the reflector is plane, oval calotte, hemispherical song Any one in face, cylindrical surface.

In a preferred embodiment of the utility model, the bilateral between the ultrasonic array loudspeaker and reflector is each Soundproof plate is set.

In a preferred embodiment of the utility model, the ultrasonic array loudspeaker includes multiple evenly distributed surpasses Acoustic wave transducer.

In a preferred embodiment of the utility model, the resonance frequency of the ultrasonic transducer 20~500khz it Between.

In a preferred embodiment of the utility model, the ultrasonic horn is sound equipment, in loudspeaker, player Any one.

As described above, the ultrasonic horn of the utility model, has the advantages that

By being arranged to the reflector of tilt angle, enable the ultrasonic signal exported in directional transmissions, meanwhile, Reduce ultrasonic signal because of noise brought by loudspeaker resonance, improves the directive property and audible sound message of voice directional spreading Number clarity.

Detailed description of the invention

Fig. 1 is shown as the utility model and provides a kind of ultrasonic horn perspective structure figure；

Fig. 2 is shown as the utility model and provides a kind of ultrasonic horn cross-sectional view；

Fig. 3 is shown as the utility model and provides a kind of ultrasonic horn schematic diagram.

Component label instructions:

1 ultrasonic array loudspeaker

2 reflectors

3 soundproof plates

Specific embodiment

The embodiments of the present invention is illustrated by particular specific embodiment below, those skilled in the art can be by this Content disclosed by specification understands other advantages and effect of the utility model easily.

It please refers to Fig.1 to Fig.3.It should be clear that this specification structure depicted in this specification institute accompanying drawings, ratio, size etc., only to Cooperate the revealed content of specification, so that those skilled in the art understands and reads, is not intended to limit the utility model Enforceable qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or size Adjustment, in the case where not influencing the effect of the utility model can be generated and the purpose that can reach, should all still fall in the utility model Revealed technology contents obtain in the range of capable of covering.Meanwhile in this specification it is cited as "upper", "lower", " left side ", The term on " right side ", " centre " and " one " etc. is merely convenient to being illustrated for narration, rather than enforceable to limit the utility model Range, relativeness are altered or modified, under the content of no substantial changes in technology, enforceable when being also considered as the utility model Scope.

Referring to Fig. 1, the utility model provides a kind of ultrasonic horn perspective structure figure, comprising:

Ultrasonic array loudspeaker 1, for (referring mainly to audio signal for audible sound, such as voice or frequency are 20HZ The sound of~20000HZ) it is modulated to ultrasonic signal (frequency is greater than 20KHZ) transmitting transmission；I.e. using ultrasonic signal as carrier wave It will in the modulates audio signals to ultrasonic signal, be the ultrasonic signal of high frequency by the modulates audio signals of low frequency；Wherein, institute Stating ultrasonic array loudspeaker 1 includes multiple evenly distributed ultrasonic transducers, the ultrasound being made up of ultrasonic transducer Wave array speaker, wherein the shape of the array can be to be rectangular or round, and the outer shape side of can be of ultrasonic transducer Shape, circle, oval calotte shape, hemispherical curved surface, Cylinder Surface, its is conveniently of circular shape herein, and the ultrasonic wave transducer The resonance frequency of device is between 20~500khz.

The transmission direction of the ultrasonic array loudspeaker is arranged in the form of angle, is surpassed described in orienting reflex for reflector 2 Acoustic signals.

In the present embodiment, ultrasonic signal is reduced because making an uproar brought by loudspeaker resonance by using angle reflected version Sound, meanwhile, using angle reflected version, so that the recipient of slightly short distance also can clearly hear, without waiting ultrasonic wave letter Noise carries elimination because of air borne in number.

As shown in Fig. 2, reflector is set to ultrasonic array loudspeaker sound transmission direction, and the two is in angle form, When the ultrasonic signal of ultrasonic array loudspeaker transmitting is exported by reflector non-uniform reflection, since ultrasonic wave is believed Number resonance noise brought by loudspeaker resonance can be consumed by reflection, but order of reflection more multi signal decaying is faster, in view of super The frequency range of acoustic signals makes its signal strength that can will not generate too big interference signal after primary event just, together When, residual noise can be consumed by air borne, it also to light equally can be in that direction propagation is transferred to recipient, thus Ultrasonic signal after capable of making reflection, from audible voice is demodulated into, has reached orientation directional transmissions in transmission process, Meanwhile signal caused by multiple reflections being avoided to decay, cause recipient that can clearly hear.

As shown in figure 3, the reflecting surface of the reflector is smooth surface structure, ultrasound can be improved using the reflector of smooth surface structure The reflecting effect of wave signal prevents ultrasonic signal to be absorbed or generate interference caused by irregular refraction in reflection and makes an uproar Sound, the shape of the reflector are plane, oval calotte, hemispherical curved surface, any one in cylindrical surface, herein preferably The smooth surface structure of plane is reflected, so that ultrasonic signal not will cause multiple reflections, the as far as possible ultrasonic wave after control reflection Signal linearly transmits, no scattering phenomenon；Meanwhile described 15~75 degree of angular range, the preferably described angle is 45 degree, convenient for super For acoustic signals as far as possible along transmission direction horizontal reflection, the size of the reflecting surface is greater than ultrasonic array loudspeaker as far as possible, guarantees Its ultrasonic signal issued can reflect output.

On the basis of the above embodiments, the bilateral between the ultrasonic array loudspeaker 1 and reflector 2 be respectively arranged every Soundboard 3, wherein 3 plate of sound insulation is wrapped in ultrasonic array loudspeaker and reflector, so that ultrasonic signal is being emitted to instead It not will receive the interference of external interference signal during emitter, meanwhile, soundproof plate 3 can completely cut off external interference signals, reach dry Disturb the purpose of isolation, wherein the soundproof plate can be composite sound insulation board, and the acoustic material of different performance, benefit are used in sound insulation It with the characteristic respectively having, is used in combination in sound insulation, in the advantage for playing respective acoustic material, to improve the globality of sound insulation Can, accomplish multiple tracks sound insulation, the effect of integrated protection.

On the basis of the above embodiments, the ultrasonic horn be sound equipment, it is loudspeaker, any one in player Kind, above structure can be applied in sound equipment, loudspeaker or player, realize the direction propagation of sound.

In conclusion the utility model by being arranged to the reflector of tilt angle, enables the ultrasonic signal of output It is enough in directional transmissions, meanwhile, reduce ultrasonic signal because of noise brought by loudspeaker resonance, improves voice directional spreading Directive property and audible signal clarity.So the utility model effectively overcomes various shortcoming in the prior art And has high industrial utilization value.

The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.

Claims

1. a kind of ultrasonic horn characterized by comprising

The transmission direction of the ultrasonic array loudspeaker, ultrasonic wave described in orienting reflex is arranged in reflector in the form of angle Signal.

2. ultrasonic horn according to claim 1, which is characterized in that 15~75 degree of the angular range.

3. ultrasonic horn according to claim 1, which is characterized in that the angle is 45 degree.

4. ultrasonic horn according to claim 1, which is characterized in that the reflecting surface of the reflector is smooth surface knot Structure.

5. ultrasonic horn according to claim 1, which is characterized in that the shape of the reflector is plane, ellipse Round surface, hemispherical curved surface, any one in cylindrical surface.

6. ultrasonic horn according to claim 1, which is characterized in that the ultrasonic array loudspeaker and reflection Soundproof plate is respectively arranged in bilateral between device.

7. ultrasonic horn according to claim 1, which is characterized in that the ultrasonic array loudspeaker includes more A evenly distributed ultrasonic transducer.

8. ultrasonic horn according to claim 7, which is characterized in that the resonance frequency of the ultrasonic transducer Between 20~500khz.

9. ultrasonic horn as claimed in any of claims 1 to 8, which is characterized in that the ultrasonic wave hair Acoustic device is sound equipment, loudspeaker, any one in player.