CN106792410A - A kind of collapsible horn of public address - Google Patents
A kind of collapsible horn of public address Download PDFInfo
- Publication number
- CN106792410A CN106792410A CN201710039324.XA CN201710039324A CN106792410A CN 106792410 A CN106792410 A CN 106792410A CN 201710039324 A CN201710039324 A CN 201710039324A CN 106792410 A CN106792410 A CN 106792410A
- Authority
- CN
- China
- Prior art keywords
- trunnion
- center line
- bugle
- public address
- horn
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R27/00—Public address systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
Abstract
The collapsible horn of a kind of public address provided by the present invention, including casing, two sets of sound systems being fixed on the load bugle of tank surface and be symmetricly set in casing；Often set sound system includes the driver being sequentially connected, the trunnion being connected with driver, and the acoustic wave reflector being connected with trunnion；Acoustic wave reflector is connected with load bugle, and the center line X of trunnion is more than zero degree with the center line Y A in a certain angle of load bugle, included angle A, and less than 180 degree, the reflecting surface of acoustic wave reflector is a parabola.Compared to traditional sound amplifier, the present invention can reduce horn volume, lift efficiency of transmission, can constitute array pattern, effectively lift sound pressure level, expand effective public address distance.
Description
Technical field
The present invention relates to a kind of public address equipment, more particularly to a kind of collapsible horn of public address.
Background technology
In modern public address application, there are many particular applications, it is necessary to 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；It is police vehicle-mounted, traffic dispersion commander, straight
Airborne equipment etc. of propagandaing directed to communicate is risen, the sound amplifier of superelevation sound pressure level is required to.
In theory, because air is to the absorption of sound wave, the attenuation for making sound wave propagate in atmosphere meets anti-flat
Fong theory, i.e. propagation distance are often doubled, its sound pressure level（SPL）Decay 6dB.Therefore, under the conditions of above-mentioned special applications,
Want to obtain larger acoustic pressure in distant location, only lift the initial sound pressure level of horn.
In practical application, generally constitute array horn to improve initial sound pressure level using multiple bugles, its principle is：1st, profit
Sensitivity is lifted with bugle structure, efficiency is improved.2nd, using many bugle array structures, lifting system general power, simultaneously as
Acoustic pressure superposition between many bugles, improves overall sound pressure level.Traditional many monomer bugle combined type array horn structures, such as Fig. 1
It is shown.But, traditional combined type bugle, with increasing number, under superposition, SPL increases, and mutual interference is made
With being consequently increased, make public address both poor sound quality, superposition efficiency reduction.As shown in Fig. 2 due to multiple bugles simultaneously work when, phase
Interference between mutually, produces comb wave, system frequency response is produced local increase, partial cancellation.So as to cause public address effect
Deteriorate.Produce having its source in for this problem, the sound wave that different bugles are produced, when a certain position is reached, path difference is caused.
As shown in figure 3, being the basic reason for producing interference due to phase difference caused by path difference △ L.Because, the coupling of two sound waves（No
Interference）Precondition be equiphase（Reach simultaneously, the time difference △ L=0 that path difference is produced）.
The content of the invention
It is an object of the invention to provide a kind of collapsible horn of public address.Compared to traditional sound amplifier, the present invention can be with
Horn volume is reduced, efficiency of transmission is lifted, array pattern can be constituted, effectively lift sound pressure level, expand effective public address distance.
To reach above-mentioned purpose, the collapsible horn of a kind of public address provided by the present invention, including casing, it is fixed on casing
The load bugle on surface and two sets of sound systems being symmetricly set in casing；Often set sound system includes the drive being sequentially connected
Dynamic device, the trunnion being connected with driver, and the acoustic wave reflector being connected with trunnion；Acoustic wave reflector is connected with load bugle, larynx
The center line X of the pipe and center line Y A in a certain angle for loading bugle, included angle A is more than zero degree, less than 180 degree, acoustic wave reflector
Reflecting surface be a parabola.
Further, the center line X of the trunnion and center line Y A in a certain angle for loading bugle, included angle A is small more than 30 degree
In 150 degree.Further, included angle A is more than 30 degree, less than 100 degree.Especially, included angle A is 90 degree.
Further, trunnion includes cylindrical wave waver.Further, cylindrical wave waver is implantation
Fusiformis phase plug in trunnion.
Further, the paraboloidal axis of symmetry is parallel with the center line Y of load bugle, and the center line X of trunnion is by throwing
The focus of object plane, reflecting surface is connected with trunnion.
Further, acoustic wave reflector also includes that be connected the middle interval for simultaneously extending along load bugle center line Y with reflecting surface
Plate, parallel with the reflecting surface and central dividing plate respectively and side plate that is equidistantly separated by, side plate is connected with trunnion and load bugle respectively.
The technical problems to be solved by the invention are directed to the defect of prior art, solve in existing sound reinforcement system and exist
A series of problems.The collapsible horn of public address that the present invention is provided, with following technical advantage：
1. volume is effectively reduced, is easy to carry, transports, installs and used.Because this horn is designed by accordion structure can have
Effect reduces volume.
2. this horn can greatly promote efficiency of transmission.Because this horn is changed by waveform, cylinder wave property is realized, compared
Traditional spherical wave horn, efficiency of transmission is substantially improved（Double in theory）.
3. the array of this horn composition can be realized, without interference coupling superposition, effectively lifting sound pressure level, expand effective public address
Distance.
4. this horn realizes multiple combination pattern, effectively expands its range of application.
This horn small volume, acoustic pressure is high, easy to carry, is suitable to be used alone and can constitute array, by linear superposition
Superelevation acoustic pressure system is realized in effect.Marine ships are can be widely applied to propaganda directed to communicate, traffic dispersion commander, police vehicle-mounted, airborne etc. need
In wanting the public address application of superelevation sound pressure level.
Brief description of the drawings
Below in conjunction with the accompanying drawings, described in detail by specific embodiment of the invention, technical scheme will be made
And other beneficial effects are apparent.
In accompanying drawing,
Fig. 1 is the schematic diagram of conventional combination bugle structure；
Fig. 2 is the sound field uniformity schematic diagram of conventional combination bugle；
Fig. 3 is the Sound image localization schematic diagram of conventional combination bugle
Fig. 4 is a kind of cross section structure diagram of public address folded horn of the invention；
Fig. 5 is traditional bugle point sound source transmission schematic diagram；
Fig. 6 is a kind of public address folded horn linear sound transmission schematic diagram of the invention；
Fig. 7 is traditional bugle array type spherical surface ripple coupled structure schematic diagram；
Fig. 8 is array type cylindrical ripple coupled structure schematic diagram；
Fig. 9 is that a kind of public address folded horn reflecting surface of the invention is paraboloidal schematic diagram；
Figure 10 is the structural representation that traditional bugle is applicable folding mode；
The schematic diagram of the array that a kind of public address of Figure 11 present invention is constituted with folded horn；
Figure 12 is a kind of schematic diagram of superposition effect of the array of public address folded horn composition of the invention；
Figure 13 is the schematic diagram that a kind of public address folded horn of the invention realizes adjustable angle of coverage function；
Drawing reference numeral：
1st, collapsible horn；2nd, casing；3rd, bugle is loaded；4th, sound system；5th, driver；6th, trunnion；7th, acoustic wave reflector；8、
Cylindrical wave waver；9th, fusiformis phase plug；10th, reflecting surface；11st, central dividing plate；12nd, side plate.
Specific embodiment
Further to illustrate technological means and its effect that the present invention is taken, it is preferable to carry out below in conjunction with of the invention
Example and its accompanying drawing are described in detail.
Refering to Fig. 4, a kind of public address collapsible horn 1, including casing 2, it is fixed on the and of load bugle 3 of tank surface
It is symmetricly set on two sets of sound systems 4 in casing；Often set sound system 4 includes the driver 5 being sequentially connected, with driver phase
Trunnion 6 even, and the acoustic wave reflector 7 being connected with trunnion；Acoustic wave reflector 7 is connected with load bugle 3, the center line X of trunnion 6
With the center line Y A in a certain angle of load bugle 3, included angle A is 90 degree, and the reflecting surface 10 of acoustic wave reflector is a parabola.
Sound system 4 can make full use of the inner space of casing 2 because can fold, and effectively reduce horn volume, be easy to carry,
Transport, install and use.
Trunnion 6 includes cylindrical wave waver 8.Cylindrical wave waver 8 is the fusiformis phase being implanted into trunnion
Plug 9.Cylindrical wave waver 8 is added in trunnion 6, the acoustic characteristic of the converter is：By the sphere wave point of traditional bugle
Sound source characteristic is converted to cylindrical wave line source characteristic, refers to patent ZL 201320153532.X.In theory, cylindrical wave relative to
Spherical wave, its efficiency of transmission is doubled.As shown in figure 5, point sound source is transmitted, meet inverse square theory, i.e.,：Transmission range often expands
It is twice, sound pressure level decay -6dB.As shown in fig. 6, line source then surmounts inverse square theory, i.e.,：Transmission range expansion is twice, sound
Arbitrarily downgrade decay -3dB, only the half of point sound source decay.So, in theory, under equal conditions, the transmission range of linear sound
It is twice than point sound source, i.e., efficiency of transmission is doubled.Therefore, this collapsible horn is line source characteristic, compared to traditional group
The point sound source characteristic of box-like bugle, its efficiency of transmission is significantly improved.
As shown in figure 4, acoustic wave reflector 7 also includes, it is connected with reflecting surface 10 and along the Y extensions of load bugle center line
Space bar 11, parallel with the reflecting surface 10 and central dividing plate 11 respectively and side plate 12 that is equidistantly separated by, side plate 12 respectively with trunnion 6 and
Load bugle 3 is connected.
As shown in figure 4, collapsible horn of the invention, using symmetrically arranged two sets of sound systems, using cylindrical wave coupling
Close structure design, rather than conventional combination bugle array type spherical surface ripple coupled structure, thus, between each monomer sound system can be made
Interfere and substantially reduce.As shown in Figure 7 and Figure 8, the structural modes of folded horn of the invention, in X-direction with tradition bugle,
And be then highly directive in Y-direction, face of cylinder diffusion property is formed, the outstanding feature of cylindrical wavefront is to be superimposed many in Y-direction
During bugle, because Y-direction diffusion is minimum, and each bugle is equiphase, equal strength wave surface（Equiphase, equal strength is coupling
Precondition）, therefore, the coupling superposition of multiple bugles, can be formed unification it is consistent etc. phase wave surface, make interference minimum.And it is traditional
Bugle, after being combined at many, due to the phase such as non-caused by path difference, interferes and is difficult to avoid that.
As shown in figure 9, the reflecting surface 10 of acoustic wave reflector 7 is a parabola, the paraboloidal axis of symmetry and load number
The center line Y at angle is parallel, and the center line X of trunnion is by paraboloidal focus F.From parabolic reflector characteristic, work as point source of sound
At focus F, by parabolic reflector, the wave surface of Y-axis is always formed in parallel with.Folded horn of the invention is first passed around
Waveform changes mouth, and cylindrical wave is converted to by spherical wave, cylindrical wave for etc. phase wave surface.Secondly, the phase such as cylindrical wave wave surface is through throwing
After object plane sound reflecting, its characteristic is still kept, simply the direction of propagation changes.From parabolic reflector characteristic, cylindrical wave is
Etc. phase wave surface, after being reflected through acoustic mirror, will turn back effect, and effectively suppress vibration clutter effect, make reflection efficiency
Greatly improve, effectively lift the efficiency of transmission of this structure.Additionally, because the center line X of trunnion makes by paraboloidal focus F
Parabola can adapt to any angle of trunnion center line X and load bugle center line Y, it is ensured that the reflected cylindrical wave turned back is passed
Defeated direction is always along the direction of load bugle center line Y.
As shown in Figure 10, traditional bugle is applicable the structural representation of folding mode, due to not by waver, because
This its acoustic wave character is spherical wave, when sound wave reflection is turned back, is cancelled out each other between vibration clutter can be produced to cause sound wave, is interfered.
Substantially reduce propagation efficiency, distortion is serious.
As is illustrated by figs. 11 and 12, folded horn of the invention has linear coupling overlaying function.4 folded horn superpositions
The array of composition, and it is corresponding, it is capable of achieving without interference coupling superposition, sound pressure level is effectively lifted, expand effective public address distance.
As shown in figure 13, the casing of folded horn of the invention can be made trapezoid cross section casing, it is possible to achieve adjustable to cover
The function of lid angle.Using the combination shown in Figure 13 a, multiple parallel superpositions of folded horn, it is possible to achieve narrow angle covering.Adopt
With the combination shown in Figure 13 b, multiple folded horns are bonded to each other, it is possible to achieve angle covering wide.
In folded horn component parts of the present invention, core component is acoustic wave reflector.Acoustic wave reflector also includes upper and lower covers
Plate.Upper and lower cover plates is the aluminium alloy plate of 10mm by thickness, is molded through Numerical control cutting, and its pilot hole is accurately positioned brill by Digit Control Machine Tool
Hole, matches with reflecting plate and left side plate pilot hole.Parabolic shape reflecting plate and left side plate are Aluminum alloy tensile section bar, through cutting
Cut blanking is formed, and its mould is formed by digital control processing.Acoustic wave reflector has reflecting plate and upper and lower cover plates, and left side plate is by screw
Fastening is assembled, and pilot hole of its wing plate hole respectively with trunnion and load bugle matches, and is fastenedly connected by bolt.
Fusiformis phase plug is that carbamide resin or aluminium alloy compression casting are molded（Refer to ZL 201320153532.X）
Load bugle is that carbamide resin or aluminium alloy compression casting are molded, and its horizontal proliferation angle can customize according to use demand, vertical to expand
Dissipate angle to be matched with casing angle, so that system composition array is used.
Tank material is carbamide resin+glass fibre plastics sucking moulding.It is shock resistance, corrosion-resistant, casing can reserve screw hole with
Frame（According to use condition customization）Array is assembled into, backpack strip can be also installed additional and is suitable for being used alone.
Casing front panel preformed hole matches with load bugle pilot hole, is connected by fastening bolt and is molded.
Claims (8)
1. the collapsible horn of a kind of public address, it is characterised in that including casing, be fixed on the load bugle of tank surface and right
Title is arranged on two sets of sound systems in casing；Often set sound system includes the driver being sequentially connected, and is connected with driver
Trunnion, and the acoustic wave reflector being connected with trunnion；Acoustic wave reflector is connected with load bugle, center line X and the load number of trunnion
The center line Y A in a certain angle at angle, included angle A is more than zero degree, and less than 180 degree, the reflecting surface of acoustic wave reflector is a parabolic
Face.
2. the collapsible horn of a kind of public address according to claim 1, it is characterised in that the center line X of the trunnion with
The center line Y A in a certain angle of bugle are loaded, included angle A is more than 30 degree, less than 150 degree.
3. the collapsible horn of a kind of public address according to claim 1, it is characterised in that the center line X of the trunnion with
The center line Y A in a certain angle of bugle are loaded, included angle A is more than 30 degree, less than 100 degree.
4. the collapsible horn of a kind of public address according to claim 1, it is characterised in that the center line X of the trunnion with
The center line Y A in a certain angle for loading bugle are 90 degree.
5. the collapsible horn of a kind of public address according to claim 1, it is characterised in that the trunnion includes cylindrical wave
Waver.
6. a kind of collapsible horn of public address according to claim 2, it is characterised in that the cylindrical wave waver
It is the fusiformis phase plug being implanted into trunnion.
7. the collapsible horn of a kind of public address according to claim 1, the paraboloidal axis of symmetry and load bugle
Center line Y it is parallel, by the paraboloidal focus, reflecting surface is connected the center line X of the trunnion with trunnion.
8. the collapsible horn of a kind of public address according to claim 1, it is characterised in that the acoustic wave reflector is also wrapped
Include, the central dividing plate for being connected with reflecting surface and extending along load bugle center line Y, respectively it is parallel with reflecting surface and central dividing plate simultaneously
The equidistant side plate being separated by, side plate is connected with trunnion and load bugle respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039324.XA CN106792410B (en) | 2017-01-19 | 2017-01-19 | Folding horn for sound amplification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710039324.XA CN106792410B (en) | 2017-01-19 | 2017-01-19 | Folding horn for sound amplification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106792410A true CN106792410A (en) | 2017-05-31 |
| CN106792410B CN106792410B (en) | 2023-05-09 |
Family
ID=58944216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710039324.XA Active CN106792410B (en) | 2017-01-19 | 2017-01-19 | Folding horn for sound amplification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106792410B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112887874A (en) * | 2021-01-14 | 2021-06-01 | 四川湖山电器股份有限公司 | Strong sound system based on full-band sound wave control |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0678389A (en) * | 1992-08-25 | 1994-03-18 | Toa Corp | Throat jig |
| US7177437B1 (en) * | 2001-10-19 | 2007-02-13 | Duckworth Holding, Llc C/O Osc Audio Products, Inc. | Multiple aperture diffraction device |
| CN201345724Y (en) * | 2009-01-16 | 2009-11-11 | 斯贝克电子（嘉善）有限公司 | Horn |
| CN203136135U (en) * | 2013-03-29 | 2013-08-14 | 张祥奎 | High-pitch horn implanted with phase plug for sound amplification |
| CN205491111U (en) * | 2016-01-14 | 2016-08-17 | 广州市声讯电子科技有限公司 | Long -range strong sound ware of high definition |
-
2017
- 2017-01-19 CN CN201710039324.XA patent/CN106792410B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0678389A (en) * | 1992-08-25 | 1994-03-18 | Toa Corp | Throat jig |
| US7177437B1 (en) * | 2001-10-19 | 2007-02-13 | Duckworth Holding, Llc C/O Osc Audio Products, Inc. | Multiple aperture diffraction device |
| CN201345724Y (en) * | 2009-01-16 | 2009-11-11 | 斯贝克电子（嘉善）有限公司 | Horn |
| CN203136135U (en) * | 2013-03-29 | 2013-08-14 | 张祥奎 | High-pitch horn implanted with phase plug for sound amplification |
| CN205491111U (en) * | 2016-01-14 | 2016-08-17 | 广州市声讯电子科技有限公司 | Long -range strong sound ware of high definition |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112887874A (en) * | 2021-01-14 | 2021-06-01 | 四川湖山电器股份有限公司 | Strong sound system based on full-band sound wave control |
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| Publication number | Publication date |
|---|---|
| CN106792410B (en) | 2023-05-09 |
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Effective date of registration: 20230406 Address after: 518100, two, wok 2, Wulian community, Longgang street, Longgang District, Shenzhen, Guangdong Applicant after: Shenzhen abbio audio-visual technology Co.,Ltd. Address before: 518000 Guangdong Province Shenzhen Luohu District Pengxing Garden 2 103 Applicant before: Zhang Xiangkui |
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