CN106792409A - A kind of collapsible horn of public address - Google Patents
A kind of collapsible horn of public address Download PDFInfo
- Publication number
- CN106792409A CN106792409A CN201710012732.6A CN201710012732A CN106792409A CN 106792409 A CN106792409 A CN 106792409A CN 201710012732 A CN201710012732 A CN 201710012732A CN 106792409 A CN106792409 A CN 106792409A
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- China
- Prior art keywords
- bugle
- trunnion
- center line
- public address
- degree
- 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.)
- Pending
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- 241001503991 Consolida Species 0.000 claims abstract description 53
- 210000000867 larynx Anatomy 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 12
- 238000010586 diagram Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 7
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000005859 coupling reaction Methods 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 239000000178 monomer Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000004807 localization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Classifications
-
- 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
Abstract
The collapsible horn of a kind of public address provided by the present invention, including casing, a set of sound system for being fixed on the load bugle of tank surface and being arranged 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 plane.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 a set of sound system being arranged 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, in trunnion
The heart line X and center line Y A in a certain angle for loading bugle, included angle A is more than zero degree, less than 180 degree, the reflection of acoustic wave reflector
Face is a plane.
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 reflecting surface of acoustic wave reflector is a plane, sound wave reflecting surface by trunnion center line X with it is negative
The intersection point C of the center line Y of bugle is carried, sound wave reflecting surface is equal to 90-A/2 degree, reflecting surface with the included angle B of load bugle center line Y
It is connected with trunnion.
Further, acoustic wave reflector also includes, is connected with reflecting surface and load bugle and parallel to loading bugle center
The central dividing plate of line Y, parallel with the reflecting surface and central dividing plate respectively and side plate that is equidistantly separated by, side plate respectively with trunnion and load
Bugle is connected.
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 the schematic diagram that a kind of public address folded horn reflecting surface of the invention is plane；
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 arranged on a set of sound system 4 in casing；Often set sound system 4 includes the driver 5 being sequentially connected, and is connected with driver
Trunnion 6, and the acoustic wave reflector 7 being connected with trunnion；Acoustic wave reflector 7 with load bugle 3 be connected, the center line X of trunnion 6 with bear
The center line Y A in a certain angle of bugle 3 are carried, included angle A is 90 degree.The reflecting surface 10 of acoustic wave reflector 7 is a plane.Sound source
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 load bugle 3 and parallel to load bugle
The central dividing plate 11 of center line Y, parallel with the reflecting surface 10 and central dividing plate 11 respectively and side plate 12 that is equidistantly separated by, 12 points of side plate
It is not connected with trunnion 6 and load bugle 3.
As shown in figure 11, collapsible horn of the invention, because being cylindrical wave, multiple folded horns can be superimposed or right
Claim to set.Using cylindrical wave coupled structure design, rather than conventional combination bugle array type spherical surface ripple coupled structure, thus, can
Substantially reduce interfering between each monomer sound system.As shown in Figure 7 and Figure 8, the structure ripple of folded horn of the invention
Shape, in X-direction with tradition bugle, and is then highly directive in Y-direction, forms face of cylinder diffusion property, cylindrical wavefront it is prominent
Going out feature is, when Y-direction is superimposed many bugles, because Y-direction diffusion is minimum, and each bugle is equiphase, equal strength wave surface
（Equiphase, equal strength is the precondition of coupling）, therefore, multiple bugles coupling superpositions can be formed and unify consistent grade phase wave
Front, makes interference minimum.And traditional bugle, after being combined at many, due to the phase such as non-caused by path difference, interfere and be difficult to keep away
Exempt from.
As shown in figure 9, the reflecting surface 10 of acoustic wave reflector 7 is a plane, sound wave reflecting surface 10 by trunnion center
The intersection point C of the line X and center line Y of load bugle, sound wave reflecting surface 10 is equal to 90-A/2 with the included angle B of load bugle center line Y
Degree.Due to having installed cylindrical wave waver additional in the trunnion of this folded horn so that enter reflector cylindrical wave for etc. phase
Wave surface, by after the reflective surface of special angle, by effect of turning back, makes cylindrical wave edge with load bugle center line Y
Propagate in parallel direction.And effectively suppress vibration clutter effect, greatly improve reflection efficiency, effectively lift the biography of this structure
Defeated efficiency.
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.2 folded horns are symmetrical
One group of arrangement composition, 4 groups of folded horns can be superimposed composition array.And it is corresponding, it is capable of achieving, without interference coupling superposition, effectively to carry
Sound pressure level is risen, expands 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.Plane reflecting plate and left side plate are Aluminum alloy tensile section bar, clipped
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 fastened by screw
It is assembled, 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 set
Put a set of sound system in casing；Often set sound system includes the driver that is 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, in the center line X and load bugle of trunnion
Heart line Y A in a certain angle, included angle A is more than zero degree, and less than 180 degree, the reflecting surface of acoustic wave reflector is a plane.
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, it is characterised in that the sound wave reflecting surface is by larynx
The intersection point C of the center line X of the pipe and center line Y of load bugle, the sound wave reflecting surface and the included angle B for loading bugle center line Y
Equal to 90-A/2 degree, reflecting surface is connected with trunnion.
8. the collapsible horn of a kind of public address according to claim 1, it is characterised in that characterized in that, the sound wave
Reflector also includes, is connected with reflecting surface and load bugle and parallel to the central dividing plate for loading bugle center line Y, respectively with instead
The side plate that face is parallel with central dividing plate and is equidistantly separated by is penetrated, side plate is connected with trunnion and load bugle respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710012732.6A CN106792409A (en) | 2017-01-09 | 2017-01-09 | A kind of collapsible horn of public address |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710012732.6A CN106792409A (en) | 2017-01-09 | 2017-01-09 | A kind of collapsible horn of public address |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106792409A true CN106792409A (en) | 2017-05-31 |
Family
ID=58950403
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710012732.6A Pending CN106792409A (en) | 2017-01-09 | 2017-01-09 | A kind of collapsible horn of public address |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106792409A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0678389A (en) * | 1992-08-25 | 1994-03-18 | Toa Corp | Throat jig |
| US5446792A (en) * | 1992-12-25 | 1995-08-29 | Kabushiki Kaisha Toshiba | Reflection-type speaker apparatus |
| US7177437B1 (en) * | 2001-10-19 | 2007-02-13 | Duckworth Holding, Llc C/O Osc Audio Products, Inc. | Multiple aperture diffraction device |
| CN103024626A (en) * | 2012-12-17 | 2013-04-03 | 广州杰士莱电子有限公司 | Sound box |
| 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 |
| CN206611581U (en) * | 2017-01-09 | 2017-11-03 | 张祥奎 | A kind of collapsible horn of public address |
-
2017
- 2017-01-09 CN CN201710012732.6A patent/CN106792409A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0678389A (en) * | 1992-08-25 | 1994-03-18 | Toa Corp | Throat jig |
| US5446792A (en) * | 1992-12-25 | 1995-08-29 | Kabushiki Kaisha Toshiba | Reflection-type speaker apparatus |
| US7177437B1 (en) * | 2001-10-19 | 2007-02-13 | Duckworth Holding, Llc C/O Osc Audio Products, Inc. | Multiple aperture diffraction device |
| CN103024626A (en) * | 2012-12-17 | 2013-04-03 | 广州杰士莱电子有限公司 | Sound box |
| 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 |
| CN206611581U (en) * | 2017-01-09 | 2017-11-03 | 张祥奎 | A kind of collapsible horn of public address |
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| PB01 | Publication | ||
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Application publication date: 20170531 |