CN104780492B - A kind of public address combination type horn - Google Patents
A kind of public address combination type horn Download PDFInfo
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- CN104780492B CN104780492B CN201510079884.9A CN201510079884A CN104780492B CN 104780492 B CN104780492 B CN 104780492B CN 201510079884 A CN201510079884 A CN 201510079884A CN 104780492 B CN104780492 B CN 104780492B
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- bugle
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- public address
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Abstract
The present invention provides a kind of public address combination type horn, it is made up of eight monomer bugles, and each monomer bugle structure is identical, monomer bugle structure is only described below, characterized in that, indicating laser lamppost, angular adjustment piece, monomer bugle fixed plate, monomer bugle connecting plate including angle adjustable bolt, bugle guide plate, hinge rotating shaft, central support posts, base plate, outer support sleeve, angle demodulator, angle adjustable bolt, cylindrical wave transducer, compressed drive, aiming laser lamppost, coverage.A kind of public address combination type horn of the present invention has advantages below：1st, efficiency of transmission is effectively lifted, there is provided effective propagation path；2nd, reduce the interference effect between monomer bugle, optimize and improve tonequality, improve coupling efficiency；3rd, by angle demodulator, the diffusion angle of coupling wave surface is can control, forms multiple coverage properties, the scope of application is wider；4th, coordinate laser pointer system, focus point and effective overlay area can be determined rapidly.
Description
Technical field
The present invention relates to a kind of public address instrument, more particularly to a kind of public address combination type horn.
Background technology
In modern public address application, there are many particular applications, need superelevation sound pressure level（Typically larger than 130dB）Expansion
Acoustic equipment, for example：The disaster early warning systems such as tsunami, earthquake；Marine ships are propagandaed directed to communicate equipment；Police vehicle-mounted, Review for Helicopter is propagandaed directed to communicate and is set
Standby etc., it is required to the sound amplifier of superelevation sound pressure level.
In theory, the Absorption due to air to sound wave, the attenuation for making sound wave propagate in atmosphere meet anti-flat
Fong theory, i.e. propagation distance often double, its sound pressure level（SPL）Decay 6dB.Therefore, under the conditions of above-mentioned special applications,
Want larger acoustic pressure to be obtained in distant location, only lift the initial sound pressure level of horn.
In real world applications, initial sound pressure level is improved using multiple bugles composition array horn generally, its principle is：1st, profit
Sensitivity is lifted with bugle structure, improves efficiency.
2nd, many bugle array structures are adopted, lift system general power, simultaneously as acoustic pressure superposition between many bugles, carries
High overall sound pressure level.
Traditional many monomer bugle combination type array horn structures, as shown in Fig. 2 still, traditional combination type bugle, with
Increasing number, under superposition, SPL increases, and mutual interference effect is consequently increased, and makes public address both poor sound quality,
Superposition efficiency reduces.As shown in figure 3, due to multiple bugles work simultaneously when, interference each other produces comb wave, make be
System frequency response produces local to be increased, partial cancellation.So as to cause public address effect to deteriorate.Having its source in for this problem is produced,
The sound wave that different bugles are produced, when a certain position is reached, path difference is caused.Analyzed from above-mentioned theory, due to path difference
△ L and caused phase contrast, are to produce the basic reason that interferes.Because two sound waves are coupled（Do not interfere）Precondition be
Phase place（Reach simultaneously, the time difference △ t=0 that path difference is produced）, as shown in figure 4, La is bugle a to c point public address path, Lb
For the public address path of bugle b to c points, △ L are path difference.
Content of the invention
It is an object of the invention to provide a kind of public address combination type horn, compares traditional sound amplifier, the present invention is effectively
Lift efficiency of transmission, there is provided effective propagation path；Reduce the interference effect between monomer bugle, optimize and improve tonequality, improve coupling
Close efficiency；By angle demodulator, the diffusion angle of coupling wave surface is can control, form multiple coverage properties, the scope of application is more
Extensively；Coordinate laser pointer system, focus point and effective overlay area can be determined rapidly.
For reaching above-mentioned purpose, a kind of public address combination type horn provided by the present invention, including angle adjustable bolt, number
Angle guide plate, hinge rotating shaft, central support posts, base plate, outer support sleeve, angle demodulator, angle adjustable bolt, cylindrical wave turn
Parallel operation, compressed drive, aiming laser lamppost, coverage indicate laser lamppost, angular adjustment piece, monomer bugle fixed plate,
Monomer bugle connecting plate, the monomer bugle add the waver, the sphere that the compressed drive is produced
Ripple such as is converted at the phase cylindrical wave, and eight monomers are synchronously coupled, and are synthesized a combination horn with consistent element characteristics, are produced system
One cylindrical wave wave surface；A kind of public address is designed using coplanar symmetrical structure with combination type horn, is made described in eight
Monomer bugle is divided into four groups, and Radial Coupling superposition, synthesizes the eight prismatic cylinder wave properties with symmetry characteristic, mutually two-by-two
Between for etc. the superposition that is coupled；The monomer bugle connecting plate, adds angle demodulator, by mutual Angulation changes,
The coupling angle between the monomer bugle is can control, synchronous adjustment can achieve to focus on or disperse function, correspondingly reduce or expansion number
The coverage of cylinder, also can carry out asynchronous regulation, realize asymmetrical coverage property；A kind of public address combination type number
Cylinder, in central support posts axle center, adds aiming laser lamppost（Red）, in order to indicate the sound focusing axis of this horn, each
The monomer bugle acoustic axis center, adds two laser lampposts（Green）, in order to indicate the sound travel journal axle of the monomer bugle
Line.
The technical problem to be solved is the present situation for prior art, solves in public address due to sound transmission
Path difference △ L and caused phase contrast, so that produce the problem of interference.A kind of public address combination type horn of the present invention, 1, this
Bright, with waveform translation function, spherical wave can be converted to cylindrical wave, in theory, cylindrical wave efficiency of transmission and transmission range are
2 times of spherical wave, though having part variation in practical application, it is obvious which lifts effect；2nd, using the radial direction coupling of coplanar symmetrical expression
Structure is closed, interfering between each monomer bugle is made and negative function is substantially reduced, reduce pectination wave effect, thus improve
Public address tonequality, improves coupling efficiency；3rd, each monomer bugle adds angle demodulator, is adjusted in synchronism protractor, can be real
The public address demand for now focusing on and sending out different；4th, it is mainly used in sound pressure level to project at a distance, coordinates red green laser group lamp, can be fast
Speed, intuitively determination acoustic centre of source point and effective coverage range, in remote projection, convenient and swift.
Description of the drawings
Below in conjunction with the accompanying drawings, described in detail by the specific embodiment to the present invention, technical scheme will be made
And other beneficial effects are apparent.
In accompanying drawing,
Fig. 1 is traditional many monomer bugle combination type array horn structural representations；
Fig. 2 is that conventional ASSEMBLE horn public address waveform interferes schematic diagram；
Fig. 3 is conventional ASSEMBLE horn public address path schematic diagram；
Fig. 4 is that conventional ASSEMBLE horn point sound source transmits schematic diagram；
Fig. 5 transmits schematic diagram for a kind of public address combination type horn linear sound of the invention；
Fig. 6 is that conventional ASSEMBLE horn adopts array type spherical surface ripple coupled structure schematic diagram；
Fig. 7 is that a kind of public address combination type horn of the invention adopts cylindrical wave coupled structure schematic diagram；
Fig. 8 is that a kind of public address combination type horn of the invention adopts Radial Coupling overlaying structure schematic diagram；
Fig. 9 is a kind of public address combination type horn angular adjustment schematic diagram of the invention；
Figure 10 fixes schematic diagram for a kind of public address combination type horn monomer bugle of the invention；
Figure 11 is a kind of public address combination type horn angle demodulator connection diagram of the invention；
Figure 12 is a kind of public address combination type horn hinge rotating shaft schematic diagram of the invention；
Figure 13 is a kind of public address combination type horn aiming laser lamppost scheme of installation of the invention.
Drawing reference numeral：
1st, angle adjustable bolt；2nd, bugle guide plate；3rd, hinge rotating shaft；4th, central support posts；5th, base plate；6th, outer support set
Cylinder；7th, angle demodulator；8th, angle adjustable bolt；9th, cylindrical wave transducer；10th, compressed drive；11st, aiming laser lamppost；
12nd, monomer bugle fixed plate；13rd, monomer bugle connecting plate；14th, coverage indicates lamppost；15th, angular adjustment piece.
Specific embodiment
For further illustrating the technological means that is taken of the invention and its effect, below in conjunction with being preferable to carry out for the present invention
Example and its accompanying drawing are described in detail.
First, the present invention is essentially different with conventional combination horn, is shown：The monomer bugle adds cylindrical wave
Waver, the acoustic characteristic of the transducer is：The spherical wave point sound source characteristic of traditional bugle is converted to cylinder swash sound
Source characteristic, in theory, relative to spherical wave, its efficiency of transmission is doubled cylindrical wave.
Fig. 5 is referred to, point sound source is transmitted, meet inverse square theory, i.e.,：Transmission range often expands and is twice, and sound pressure level decay-
6dB.
Fig. 6 is referred to, line source then surmounts inverse square theory, i.e.,：Transmission range expansion is twice, sound pressure level decay -3dB, only
Have the 1/2 of point sound source.
By point sound source transmission and line source transmiting contrast, in theory, under equal conditions, the transmission range of linear sound will
It is twice than point sound source, i.e., efficiency of transmission is doubled.
Therefore, this combination horn is line source characteristic, compares the point sound source characteristic of conventional ASSEMBLE bugle, its efficiency of transmission
Significantly improve.
The present invention, is designed using cylindrical wave coupled structure, rather than the array type spherical surface ripple coupled structure of conventional combination bugle
Fig. 7 is referred to, thus, substantially reduce can interfering between each monomer bugle.
The present invention understands refering to Fig. 8, in X-direction with tradition bugle, and is then highly directive in Y-direction, forms the face of cylinder and expand
Scattered characteristic, the outstanding feature of cylindrical wavefront is, when Y-direction is superimposed many bugles, as Y-direction spreads minimum, and each bugle
It is equiphase, equal strength wave surface（Equiphase, equal strength are the preconditions of coupling）, therefore, multiple bugle coupling superpositions,
The phase wave surfaces such as unification is consistent can be formed, makes interference minimum.And traditional bugle, after many combinations, as path difference causes
The phase such as non-, interfere and be difficult to avoid that.
The present invention adopts Radial Coupling overlaying structure, refering to Fig. 9, as described above, in YA to the cylinder for forming coupling superposition
Ripple, and XA to, due to α A=360 °/n, waver such as can form at the phase wave surface in addition, thus, make XA directions, compare tradition
Bugle, interference effect are substantially reduced.
In the same manner, after radial stacking, YA, YB, YC, YD ... and XA, XB, XC, XD ..., many bugles coupling superpositions make whole
Individual combination type horn, forms the eight phase cylinder wave surfaces such as prismatic, makes the coupling of combination type horn be superimposed efficiency notable
Improve.
The present invention refers to Figure 10, and each bugle monomer adds angle demodulator, by angular adjustment, can control relative
The coupling angle of the two bugle monomers that answers, forms integral combined horn and focuses on or disperse function, so that this horn knot
It is configured to different coverages.
In sum：Waveform translation function of the present invention by monomer bugle, makes the phase cylinders such as each monomer bugle formation
Wave property.Then, by Radial Coupling superposition, make multiple monomer bugles form unified coupling cylinder wave surface, make whole
After individual horn combination, the consistent horn structure of an acoustic characteristic is formed, while superposition efficiency is obviously improved, substantially reduced
Interference effect, optimizes public address tonequality.Meanwhile, aid in the focusing of angle demodulator and disperse function, make whole horn
Dispersal waveform changes therewith, forms different coverage properties, effectively extends its range of application.
2nd, refering to Fig. 1 to 13, a kind of public address combination type horn is made up of eight monomer bugles, and each monomer bugle
Structure is identical, only describes monomer bugle structure below, it is characterised in that including angle adjustable bolt 1, bugle guide plate 2, hinge
Rotating shaft 3, central support posts 4, base plate 5, outer support sleeve 6, angle demodulator 7, angle adjustable bolt 8, cylindrical wave transducer 9,
Compressed drive 10, aiming laser lamppost 11, coverage indicate that laser lamppost 14, angular adjustment piece 15, monomer bugle are fixed
Plate 12, monomer bugle connecting plate 13, the monomer bugle add the cylinder waver 9, by the compressible drive
The spherical wave that device 10 is produced such as is converted at the phase cylindrical wave, and eight monomers are synchronously coupled, and synthesize one and there is consistent element characteristics
Combination horn, produces unified cylindrical wave wave surface；A kind of public address combination type horn is set using coplanar symmetrical structure
Meter, makes the monomer bugle described in eight be divided into four groups, two-by-two Radial Coupling superposition, synthesizes eight prismatic with symmetry characteristic
Cylinder wave property, each other for etc. the superposition that is coupled；The monomer bugle connecting plate 13, adds angle demodulator 7, passes through
Mutual Angulation changes, can control the coupling angle between the monomer bugle, be adjusted in synchronism, and can achieve to focus on or diverging is made
With the corresponding coverage for reducing or expanding horn also can carry out asynchronous regulation, realize asymmetrical coverage property；Described
A kind of public address combination type horn, in 4 axle center of central support posts, adds aiming laser lamppost 14, in order to indicate this horn
Sound focusing axis, each described monomer bugle acoustic axis center adds two coverages and indicates laser lamppost 14, in order to indicate
The acoustic path axis of the monomer bugle.
The processing of the base plate 5 is processed as octagon from 6mm thickness aluminium sheets, numerical control laser cutter；
The processing of the outer support sleeve 6, from 4mm thickness aluminium sheets, is positive eight prism by flat board blanking, numerical control bending；
The processing of the central support posts 4 is positive eight prism from 4mm thickness aluminium sheets, flat board blanking, numerical control bending；
The outer support sleeve 6, the central support posts 4 are welded on the base plate 5, solid with work card tool during welding
Fixed, it is ensured that the outer support sleeve 6, the central support posts 4 are concentric；
Figure 11 is referred to, the fixed processing of the monomer bugle is from 4mm thickness aluminium sheets, flat board blanking, center square hole and screw
Hole is mated with the cylindrical wave transducer 9 and the bugle guide plate 2, and the angular adjustment piece 15 selects 4mm aluminium sheets, vertical welding
12 center of monomer bugle fixed plate is connected on, its centre bore tapping silk is mated with the angle adjustable bolt 8；
The cylinder transducer 9 and the bugle guide plate 2 are carbamide resin die cast, 2 water of bugle guide plate
The bugle guide plate 2 and the cylinder transducer 9 are separately mounted to 12 both sides of monomer bugle fixed plate by 45 ° of flat angle, with
Bolt connection；
Refer to Figure 12, the angle demodulator 7 from 6mm thickness aluminium sheet, digital control processing, the angle demodulator 7 be connected
After angle bar riveting, with the inner side that riveting method is fixed on the outer support sleeve 6；The hinge rotating shaft 3 and the monomer bugle
Elongated hole is processed in 12 junction of fixed plate, with adjustment assembly tolerance, is fixed on the central supported with riveting method, on 4；
After by the monomer bugle assembly, one end is first fixed with the angle adjustable bolt 8, the other end with described
Hinge rotating shaft 3 is connected, and is fixed with fastening bolt；
Figure 13 is referred to, the aiming laser lamppost 11 is installed on the inside of the central support posts 4 by cross supporting frame,
The coverage indicates that laser lamppost 14 is installed in the monomer bugle fixed plate 12, and all lampposts adopt AB resin glues
Bonding.
The above, for the person of ordinary skill of the art, can be with technology according to the present invention scheme and technology
Other various corresponding changes and deformation are made in design（Quantity, the type of cylindrical wave transducer including monomer bugle）, and institute
There are these changes and deformation all belong to the protection domain of the claims in the present invention.
Claims (1)
1. a kind of public address combination type horn, is made up of eight monomer bugles, and each monomer bugle structure is identical, each monomer
Bugle is characterized in that, including angle adjustable bolt, bugle guide plate, hinge rotating shaft, central support posts, base plate, outer support set
Cylinder, angle demodulator, angle adjustable bolt, cylindrical wave transducer, compressed drive, aiming laser lamppost, coverage are indicated
Laser lamppost, angular adjustment piece, monomer bugle fixed plate, monomer bugle connecting plate；The monomer bugle adds the ripple
The spherical wave that the compressed drive is produced the phase cylindrical wave such as is converted to by shape transducer, and eight monomers are synchronously coupled, synthesis one
The individual combination horn with consistent element characteristics, produces unified cylindrical wave wave surface；A kind of public address combination type horn
Designed using coplanar symmetrical structure, make the monomer bugle described in eight be divided into four groups, Radial Coupling superposition, synthesizes tool two-by-two
Have eight prismatic cylinder wave properties of symmetry characteristic, each other for etc. the superposition that is coupled；The monomer bugle connecting plate, installs additional
Angled actuator, by mutual Angulation changes, can control the coupling angle between the monomer bugle, is adjusted in synchronism, can
Realize focusing on or disperse function, the corresponding coverage for reducing or expanding horn also can carry out asynchronous regulation, realize asymmetric
Coverage property；A kind of public address combination horn, in central support posts axle center, adds aiming laser lamppost（Red）,
In order to indicate the sound focusing axis of this horn, each described monomer bugle acoustic axis center adds two laser lampposts（Green）,
In order to indicate the acoustic path axis of the monomer bugle, the processing of the base plate is from 6mm thickness aluminium sheets, numerical control laser cutter
It is processed as octagon；The processing of the outer support sleeve, from 4mm thickness aluminium sheets, is positive eight by flat board blanking, numerical control bending
Prism；The processing of the central support posts is positive eight prism from 4mm thickness aluminium sheets, flat board blanking, numerical control bending；Will be described outer
Stop sleeve, the central support posts are welded on the base plate, are fixed with work card tool, it is ensured that the outer support set during welding
Cylinder, the central support posts are concentric；The fixed processing of the monomer bugle from 4mm thickness aluminium sheets, flat board blanking, center square hole and
Screw hole is mated with the cylindrical wave transducer and the bugle guide plate, and the angular adjustment piece selects 4mm aluminium sheets, vertically
The monomer bugle fixed plate center is welded on, its centre bore tapping silk is mated with the angle adjustable bolt；The cylinder
Ripple transducer and the bugle guide plate are carbamide resin die cast, and 45 ° of the bugle guide plate horizontal sextant angle, by described number
Angle guide plate and the cylindrical wave transducer are separately mounted to monomer bugle fixed plate both sides, with bolt connection；The angle is adjusted
Section device is fixed on institute with riveting method from 6mm thickness aluminium sheets, digital control processing after the angle demodulator is riveted with connecting angle iron
State the inner side of outer support sleeve；The hinge rotating shaft is processed into elongated hole with the monomer bugle fixed plate junction, to adjust
Build-up tolerance, is fixed in the central support posts with riveting method；After by the monomer bugle assembly, the regulation is used
One end is first fixed by bolt, and the other end is connected with the hinge rotating shaft, is fixed with fastening bolt；The aiming laser lamppost, leads to
Cross cross supporting frame to be installed on the inside of the central support posts, the coverage indicates that laser lamppost is installed on the monomer number
In the fixed plate of angle, all lampposts adopt AB resin glue bondings.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079884.9A CN104780492B (en) | 2015-02-13 | 2015-02-13 | A kind of public address combination type horn |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510079884.9A CN104780492B (en) | 2015-02-13 | 2015-02-13 | A kind of public address combination type horn |
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| Publication Number | Publication Date |
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| CN104780492A CN104780492A (en) | 2015-07-15 |
| CN104780492B true CN104780492B (en) | 2017-03-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105979432A (en) * | 2016-07-26 | 2016-09-28 | 广州市展迅电声科技有限公司 | Asymmetrical sound-reinforcement full-frequency loudspeaker box and use method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1812663A (en) * | 2005-01-28 | 2006-08-02 | 奥特兰诺塞利G.&C.公司 | Loudspeaker enclosure element for forming vertical line array systems adjustable horizontal and vertical directivity |
| CN201138867Y (en) * | 2008-01-09 | 2008-10-22 | 龚立风 | Active acoustics in linear array |
| CN202026462U (en) * | 2011-05-12 | 2011-11-02 | 邢位洪 | Sound amplifier |
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2015
- 2015-02-13 CN CN201510079884.9A patent/CN104780492B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1812663A (en) * | 2005-01-28 | 2006-08-02 | 奥特兰诺塞利G.&C.公司 | Loudspeaker enclosure element for forming vertical line array systems adjustable horizontal and vertical directivity |
| CN201138867Y (en) * | 2008-01-09 | 2008-10-22 | 龚立风 | Active acoustics in linear array |
| CN202026462U (en) * | 2011-05-12 | 2011-11-02 | 邢位洪 | Sound amplifier |
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Effective date of registration: 20180814 Address after: 518100, two, wok 2, Wulian community, Longgang street, Longgang District, Shenzhen, Guangdong Patentee after: Shenzhen abbio audio-visual technology Co., Ltd. Address before: 518000 Guangdong Shenzhen Nanshan District Houhai Avenue blue coast three phase 40 40 6D Patentee before: Zhang Xiangkui |