CN206611581U - A kind of collapsible horn of public address - Google Patents
A kind of collapsible horn of public address Download PDFInfo
- Publication number
- CN206611581U CN206611581U CN201720019126.2U CN201720019126U CN206611581U CN 206611581 U CN206611581 U CN 206611581U CN 201720019126 U CN201720019126 U CN 201720019126U CN 206611581 U CN206611581 U CN 206611581U
- Authority
- CN
- 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.)
- Active
Links
Landscapes
- Aerials With Secondary Devices (AREA)
Abstract
The collapsible horn of a kind of public address provided by the utility model, 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 and load bugle of trunnion center line Y A in a certain angle, included angle A are more than zero degree, and less than 180 degree, the reflecting surface of acoustic wave reflector is a plane.Compared to traditional sound amplifier, the utility model 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 utility model is related to a kind of public address equipment, more particularly to a kind of collapsible horn of public address.
Background technology
In the application of modern public address, 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；Police vehicle-mounted, traffic dispersion is commanded, directly
Airborne equipment etc. of propagandaing directed to communicate is risen, the sound amplifier of superelevation sound pressure level is required to.
In theory, due to absorption of the air to 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, it is sharp
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 reaching a certain position, 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, time difference △ L=0 that path difference is produced）.
Utility model content
The purpose of this utility model is to provide a kind of public address collapsible horn.Compared to traditional sound amplifier, this practicality
It is new to reduce horn volume, efficiency of transmission is lifted, array pattern can be constituted, sound pressure level is effectively lifted, expands and effectively expands
Throw from.
To reach above-mentioned purpose, the collapsible horn of a kind of public address provided by the utility model, including casing, be fixed on
The load bugle of tank surface and a set of sound system being arranged 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 pipe and load bugle center line Y A in a certain angle, included angle A is more than zero degree, less than 180 degree, acoustic wave reflector
Reflecting surface be a plane.
Further, the center line X of trunnion and load bugle center line Y A in a certain angle, 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, and sound wave reflecting surface is by the center line X of trunnion with bearing
The center line Y of bugle intersection point C is carried, the included angle B of sound wave reflecting surface and load bugle center line Y is equal to 90-A/2 degree, reflecting surface
It is connected with trunnion.
Further, acoustic wave reflector also includes, and is connected with reflecting surface and load bugle and parallel to load bugle center
Line Y central dividing plate, 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.
Technical problem to be solved in the utility model is the defect for prior art, is solved in existing sound reinforcement system
A series of problems of presence.The collapsible horn of public address that the utility model is provided, with following technical advantage：
1. effectively reducing volume, it is easy to carry, transports, installs and uses.Because this horn is designed by accordion structure
It is effectively reduced volume.
2. a horn can greatly promote efficiency of transmission.Because this horn is changed by waveform, cylinder wave property is realized, is compared
Traditional spherical wave horn, efficiency of transmission is substantially improved（Double in theory）.
3. the array of a horn composition can be realized without interference coupling superposition, sound pressure level is effectively lifted, expands effective public address
Distance.
4. a horn realizes multiple combinations pattern, its application is effectively expanded.
This horn small volume, acoustic pressure is high, easy to carry, can constitute array again suitable for being used alone, pass through 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 the public address application for wanting superelevation sound pressure level.
Brief description of the drawings
Below in conjunction with the accompanying drawings, by the way that embodiment of the present utility model is described in detail, it will make of the present utility model
Technical scheme 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 utility model；
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 utility model；
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 a kind of public address of the utility model with the schematic diagram that folded horn reflecting surface is plane；
Figure 10 is the structural representation that traditional bugle is applicable folding mode；
The schematic diagram for the array that a kind of public address of Figure 11 the utility model is constituted with folded horn；
Figure 12 is the schematic diagram of the superposition effect for the array that a kind of public address of the utility model is constituted with folded horn；
Figure 13 and Figure 14 is the schematic diagram that a kind of public address of the utility model realizes adjustable angle of coverage function with folded horn；
Drawing reference numeral：
1st, collapsible horn；2nd, casing；3rd, bugle is loaded；4th, sound system；5th, driver；6th, trunnion；7th, sound wave reflects
Device；8th, cylindrical wave waver；9th, fusiformis phase plug；10th, reflecting surface；11st, central dividing plate；12nd, side plate.
Embodiment
Further to illustrate technological means and its effect that the utility model is taken, below in conjunction with of the present utility model
Preferred embodiment and its accompanying drawing are described in detail.
Refering to Fig. 4, a kind of public address collapsible horn 1, including casing 2, the and of load bugle 3 for being fixed on 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 is connected with load bugle 3, and the center line X of trunnion 6 is with bearing
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, which expands, to be 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
Center line Y central dividing plate 11, 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 present utility model because being cylindrical wave, multiple folded horns can be superimposed or
Person is symmetrical arranged.Using cylindrical wave coupled structure design, rather than conventional combination bugle array type spherical surface ripple coupled structure, because
And, can substantially reduce interfering between each monomer sound system.As shown in Figure 7 and Figure 8, folded horn of the present utility model
Structural modes, in X-direction with traditional bugle, and be then highly directive in Y-direction, form face of cylinder diffusion property, cylindrical wave
The outstanding feature of front is, when Y-direction is superimposed many bugles, due to Y-direction spread it is minimum, and each bugle be equiphase, etc. it is strong
Spend wave surface（Equiphase, equal strength is the precondition of coupling）, therefore, multiple bugle coupling superpositions can form unified consistent
Etc. phase wave surface, make interference minimum.And traditional bugle, it is mutually dry due to the phase such as non-caused by path difference after being combined at many
Relate to and be difficult to avoid that.
As shown in figure 9, the reflecting surface 10 of acoustic wave reflector 7 is a plane, sound wave reflecting surface 10 passes through the center of trunnion
Line X and the center line Y of load bugle intersection point C, the included angle B of sound wave reflecting surface 10 and load bugle center line Y are equal to 90-A/2
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, after the reflective surface of special angle, by effect of turning back, makes cylindrical wave along with loading 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 passing through waver, because
This its acoustic wave character is spherical wave, and when sound wave reflection is turned back, can produce vibration clutter causes to cancel out each other between sound wave, interferes.
Substantially reduce propagation efficiency, distortion is serious.
As is illustrated by figs. 11 and 12, folded horn of the present utility model has linear coupling overlaying function.2 folded horns
One group of composition is arranged symmetrically, 4 groups of folded horns can be superimposed composition array.And it is corresponding, it can be achieved, without interference coupling superposition, to have
Effect lifting sound pressure level, expands effective public address distance.
As shown in Figure 13 and Figure 14, trapezoid cross section casing can be made in the casing of folded horn of the present utility model, can be with
Realize the function of adjustable angle of coverage.Using the combination shown in Figure 13, the parallel superposition of multiple folded horns, it is possible to achieve narrow
Angle is covered.Using the combination shown in Figure 14, multiple folded horns are bonded to each other, it is possible to achieve wide angle covering.
In the utility model folded horn component parts, core component is acoustic wave reflector.Acoustic wave reflector also includes upper
Lower cover.Upper and lower cover plates is molded by the aluminium alloy plate that thickness is 10mm through Numerical control cutting, and its pilot hole is accurately fixed by Digit Control Machine Tool
Position drilling, is matched with reflecting plate and left side plate pilot hole.Plane reflecting plate and left side plate are Aluminum alloy tensile section bar, warp
Shearing 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）
It is that carbamide resin or aluminium alloy compression casting are molded to load bugle, and its horizontal proliferation angle can be customized according to use demand, be hung down
Straight angle of flare is 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 be suitable for exclusive use.
Casing front panel preformed hole matches with load bugle pilot hole, is connected and is molded by fastening bolt.
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 is including the driver being sequentially connected, the trunnion being connected with driver,
The acoustic wave reflector being connected with trunnion；Acoustic wave reflector is connected with load bugle, and the center line X of trunnion is with loading in bugle
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 5, 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 passes through larynx
The center line X of pipe and the center line Y of load bugle intersection point C, the included angle B of the sound wave reflecting surface and load 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 the acoustic wave reflector is also wrapped
Include, be connected with reflecting surface and load bugle and parallel to load bugle center line Y central dividing plate, respectively with reflecting surface and centre
Dividing plate is parallel and the side plate that is equidistantly separated by, and side plate is connected with trunnion and load bugle respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720019126.2U CN206611581U (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 |
|---|---|---|---|
| CN201720019126.2U CN206611581U (en) | 2017-01-09 | 2017-01-09 | A kind of collapsible horn of public address |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206611581U true CN206611581U (en) | 2017-11-03 |
Family
ID=60172312
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720019126.2U Active CN206611581U (en) | 2017-01-09 | 2017-01-09 | A kind of collapsible horn of public address |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206611581U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792409A (en) * | 2017-01-09 | 2017-05-31 | 张祥奎 | A kind of collapsible horn of public address |
-
2017
- 2017-01-09 CN CN201720019126.2U patent/CN206611581U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106792409A (en) * | 2017-01-09 | 2017-05-31 | 张祥奎 | A kind of collapsible horn of public address |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Joseph et al. | Near field zones of quiet | |
| US5701359A (en) | Flat-panel speaker | |
| CN101147189A (en) | Active countersound system with special arrangement of the secondary actuators for reducing the passage of sound at an open boundary area of two volumes | |
| CN206639584U (en) | A kind of sound absorption cell cube of MULTILAYER COMPOSITE containing cavity suitable for underwater environment | |
| CN103443851A (en) | Acoustically permeable material, acoustic adjustment face structure comprising building use adopting said material, windshield for microphone, grill for protection, acoustically permeable projection screen and speaker | |
| CN206611581U (en) | A kind of collapsible horn of public address | |
| CN206611580U (en) | A kind of collapsible horn of public address | |
| US8089198B2 (en) | Piezoelectric loudspeaker | |
| CN206611582U (en) | A kind of collapsible horn of public address | |
| CN201199437Y (en) | Sound isolation sound-absorbing baffle | |
| EP1236375A2 (en) | Flat loudspeaker system for bass reproduction | |
| JP2021189212A (en) | Sound isolation system and sound isolation method | |
| CN207022208U (en) | A kind of collapsible horn of public address | |
| US20070064964A1 (en) | Flat panel speaker assembly | |
| CN106792410A (en) | A kind of collapsible horn of public address | |
| CN106792409A (en) | A kind of collapsible horn of public address | |
| CN106792408A (en) | A kind of collapsible horn of public address | |
| CN108279579A (en) | A kind of Large Underwater platform noise reduction system with class cochlear structures | |
| CN107071678A (en) | A kind of collapsible horn of public address | |
| CN2810075Y (en) | Active linear array sound system | |
| Hirsch et al. | Experimental study of smart segmented trim panels for aircraft interior noise control | |
| CN204993800U (en) | Integral type linear array speaker composite set | |
| CN104780492B (en) | A kind of public address combination type horn | |
| Kournoutos et al. | The design of a low-cost directional warning sound system for electric vehicles | |
| CN209257825U (en) | Shelter air-conditioning anti-resonance mounting structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |