CN201123122Y - Sound wave beaming irradiator - Google Patents
Sound wave beaming irradiator Download PDFInfo
- Publication number
- CN201123122Y CN201123122Y CNU2007201700340U CN200720170034U CN201123122Y CN 201123122 Y CN201123122 Y CN 201123122Y CN U2007201700340 U CNU2007201700340 U CN U2007201700340U CN 200720170034 U CN200720170034 U CN 200720170034U CN 201123122 Y CN201123122 Y CN 201123122Y
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- sound
- head
- paraboloidal reflector
- reverse
- pipeline
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Abstract
The utility model relates to a sound wave bunching radiator, which belongs to the technical field of the loudspeaker. The sound wave bunching radiator comprises a sound transmitting pipeline, a reversal head, an annular guide apparatus, a paraboloid reflector and a straight pipe shaped sound amplifying channel. The sound transmitting pipeline is fixed on the shaft line of the paraboloid reflector. The straight pipe shaped sound amplifying channel is connected with the paraboloid reflector. The reversal head is positioned in the straight pipe shaped sound amplifying channel, and is arranged at the end part of the sound transmitting pipeline, an annular surface at the outlet part of the reversal head is perpendicular to the shaft line of the paraboloid reflector, and is positioned on the focal point of the paraboloid reflector. The annular guide apparatus is sleeved on the sound transmitting pipeline, and is positioned at the front part of the reversal head, to ensure that an annular plane is formed at the outlet part of the reversal head, and the reversal head and the annular guide apparatus are fixed on the sound transmitting pipeline through a supporting bolt. The sound wave bunching radiator has the advantages that the sound wave radiation angle at the outlet part is relatively smaller, hence the energy of the sound wave is centralized, the transmitting distance is far, and the size of the whole trumpet is relatively smaller, thus the sound wave bunching radiator becomes the mobile strong sound broadcasting device.
Description
Technical field
The utility model relates to a kind of acoustic wave bundle radiator, and particularly a kind of acoustic wave bundle radiator that is applicable to the high-strength sound broadcasting of large power long distance belongs to the loudspeaker techniques field.
Background technology
The shape majority of the loudspeaker horn that generally uses Figure 1 shows that exponential curve shape loudspeaker horn, referring to " acoustics handbook " the 291st page of Figure 14 .3.9 of revised edition (e) in the 2007th as exponential curve, outstanding line or the conical curve practiced at present.Among Fig. 1, the 1st, sound producing head, the 2nd, index horn, the 3rd, index horn outlet section, the 4th, back-turning section.The operation principle of this loudspeaker horn is to give sound source (sound producing head) with certain impedance by certain loudspeaker curve, obtains maximum efficient when making sound transmission.In order to reduce the length of loudspeaker, usually its curve is divided into three sections, interlude forms foldingly conversely, and as shown in Figure 1, its high frequency response is slightly decayed.Its shortcoming is, sound wave general radiation angle, exit is big, the sphere of action broad, propagation distance is short and acoustic wave energy is not concentrated etc.For long distance broadcasting, need propagation distance far away, or as strong sound broadcasting, need with concentration of energy one among a small circle in during use, existing various loudspeaker are all inaccessible.
Summary of the invention
The purpose of this utility model is to propose a kind of acoustic wave bundle radiator, change the structure of existing loudspeaker, the principle of similar searchlight reflects to form narrower a branch of sound wave with acoustic wave bundle, compares its acoustic energy ratio with existing loudspeaker and concentrates size relative less, is convenient to move and uses.
The acoustic wave bundle radiator that the utility model proposes comprises that transaudient pipeline, reverse head, annular guider, paraboloidal reflector, straight tube shape amplify; Described transaudient pipeline is fixed on the axis of paraboloidal reflector; Described straight tube shape amplifies and is connected with paraboloidal reflector; Described reverse head is in straight tube shape amplifies, and places the end of transaudient pipeline, and the ring surface in reverse exit is perpendicular to the axis of paraboloidal reflector, and is on the focus of paraboloidal reflector; Described annular guider is sleeved on the transaudient pipeline, and is in the front portion of reverse head, makes the exit of reverse head become ring surface, and oppositely head and annular guider are fixed on the transaudient pipeline by supporting screw.
In the above-mentioned acoustic wave bundle radiator, the focal length of paraboloidal reflector can be 50～1200mm, and the diameter that straight tube shape amplifies can be D=200～4000mm, and the length that straight tube shape amplifies can be L=100～2000.
In the above-mentioned acoustic wave bundle radiator, the area S of transaudient pipeline porch
0And the pass between the area of the ring surface in reverse exit is: S=S
0e
m, wherein m is the length g of transaudient pipeline and from transaudient pipe outlet to reverse midline length h sum between the head outlet.
In the above-mentioned acoustic wave bundle radiator, the end blade outlet angle of annular guider is α, and α meets the following conditions: the extended line of exit angle incides paraboloidal reflector, and emergent ray after reflection parallels with the axis of paraboloidal reflector.
The acoustic wave bundle radiator that the utility model proposes, its advantage is: acoustic irradiation angle, exit is less relatively, so acoustic wave energy is concentrated, and propagation distance is far away.And whole loudspeaker size is less relatively, can become removable strong sound broadcaster.Acoustic wave bundle radiator of the present utility model can produce good effect, acoustic wave energy is concentrated on the acoustic axis, generally can make the sound pressure level on the acoustic axis line improve 10～15dB than sound pressure level on the respective point on the loudspeaker acoustic axis of other types, the acoustic beam scope is (6dB) in ± 15 °.So just sound wave can be concentrated and pass to farther place.
Description of drawings
Fig. 1 is the structural representation of existing loudspeaker horn.
Fig. 2 is the structural representation of the acoustic wave bundle radiator that the utility model proposes.
Fig. 3 is the A-A cutaway view of Fig. 2.
Among Fig. 1～Fig. 3, the 1st, sound producing head, the 2nd, index horn, the 3rd, index horn outlet section, the 4th, back-turning section, the 5th, transaudient pipeline, the 6th, reverse head, the 7th, acoustic irradiation mouth, the 8th, annular guider, the 9th, paraboloidal reflector, the 10th, straight tube shape amplifies, and the 11st, supporting screw, F are the focus of paraboloidal reflector, g is the length of transaudient pipeline, and h is to midline length between oppositely head exports from transaudient pipe outlet.
Embodiment
The acoustic wave bundle radiator that the utility model proposes, its structure comprise that transaudient pipeline 5, reverse 6, annular guider 8, paraboloidal reflector 9, straight tube shape amplify 10 as shown in Figure 2.Transaudient pipeline 5 is fixed on the axis of paraboloidal reflector 9.Straight tube shape amplifies and 10 is connected with paraboloidal reflector 9, being in straight tube shape for reverse 6 amplifies in 10, and placing the end of transaudient pipeline 5, the ring surface in reverse exit is perpendicular to the axis of paraboloidal reflector, and is on the focal point F of paraboloidal reflector 9.Annular guider 8 is sleeved on the transaudient pipeline 5, and is in reverse 6 front portion, makes the exit of reverse head become ring surface.Reverse 6 and annular guider 8 are fixed on the transaudient pipeline 5 by supporting screw 11.
In the above-mentioned acoustic wave bundle radiator, the focal length of paraboloidal reflector can be 50～1200mm, and the diameter that straight tube shape amplifies can be D=200～4000mm, and the length that straight tube shape amplifies can be L=100～2000.
In the above-mentioned acoustic wave bundle radiator, the area S of transaudient pipeline porch
0And the pass between the area of the ring surface in reverse exit is: S=S
0e
m, wherein m is the length g of transaudient pipeline and from transaudient pipe outlet to reverse midline length h sum between the head outlet.
In the above-mentioned acoustic wave bundle radiator, the end blade outlet angle of annular guider is α, and α meets the following conditions: the extended line of exit angle incides paraboloidal reflector, and emergent ray after reflection parallels with the axis of paraboloidal reflector.
In the acoustic wave bundle radiator that the utility model proposes, the loudspeaker by transaudient pipeline, reverse head are formed are the exponential curve shape of routine, i.e. the inwall of transaudient pipeline and oppositely the inwall exponentially curvilinear motion of head.Its advantage is: acoustic irradiation angle, exit is less relatively, so acoustic wave energy is concentrated, and propagation distance is far away.And whole loudspeaker size is less relatively, can become removable strong sound broadcaster.
The operation principle of this acoustic wave bundle radiator is as follows:
The sound wave that sends by the sound producing head (not shown), by transaudient pipeline 5, be sent to reverse 6 place, sound wave turns back after oppositely through reverse 6, under the effect of annular guider 8, reach reverse 6 acoustic irradiation mouth 7, and by annular guider 8, with certain orientation directive paraboloidal reflector 9.Because paraboloidal focussing force, sound wave boundling after paraboloidal reflector 9 reflections becomes very narrow a branch of sound wave, concentration of energy, the sound intensity will significantly improve.In order further sound wave to be concentrated, a straight tube shape has been installed outside reflecting surface has amplified 10, the sound intensity at rear portion is weakened, the forward direction sound wave is further strengthened.
Among the embodiment of the present utility model, sound wave is produced after transaudient pipeline 5 reaches reverse 6 by sound producing head, and reverse 6 export center is positioned on the focus of paraboloidal reflector, the axis normal of pelvic outlet plane and paraboloidal reflector.In the present embodiment, the sound producing head diameter is 50mm, and reverse outlet diameter is 220mm.Annular guider 8 is arranged in reverse 6 exit, fixing between reverse 6 and annular guider 8 and the transaudient pipeline 5 by supporting screw 11, the exit angle α of annular guider 8, make sound wave by certain orientation, directive paraboloidal reflector 9, import (end that diameter is little) and the direction of annular guider 86 is perpendicular with the center line of the annulus area that transaudient pipeline 5 forms, and sound wave is penetrated near parallel lines after the paraboloidal reflector reflection.Because acoustic irradiation mouth 7 is an annular area rather than a point sound source, can not be parallel acoustic beam after the reflection therefore, but a less angle, acoustic beam is generally ± and 10 °～± 15 °.Transaudient pipeline 5 is positioned at the center of paraboloidal reflector 9, and sound producing head is positioned at paraboloidal reflector 9 back, in the paraboloidal reflector front straight length 10 is installed, and further increases the energy of forward direction sound wave, weakens the acoustic energy at rear portion.Amplify 10 diameter of paraboloidal reflector 9 and straight tube shape is all D mutually, and the length that straight tube shape amplifies is L, and L is relevant with the frequency range of the acoustic energy that requires radiation according to the size of radiation acoustic energy with D, can change within a large range.Among the embodiment of the present utility model, D=600mm, L=300mm.
Claims (4)
1. an acoustic wave bundle radiator is characterized in that comprising that transaudient pipeline, reverse head, annular guider, paraboloidal reflector, straight tube shape amplify; Described transaudient pipeline is fixed on the axis of paraboloidal reflector; Described straight tube shape amplifies and is connected with paraboloidal reflector; Described reverse head is in straight tube shape amplifies, and places the end of transaudient pipeline, and the ring surface in reverse exit is perpendicular to the axis of paraboloidal reflector, and is on the focus of paraboloidal reflector; Described annular guider is sleeved on the transaudient pipeline, and is in the front portion of reverse head, makes the exit of reverse head become ring surface, and oppositely head and annular guider are fixed on the transaudient pipeline by supporting screw.
2. acoustic wave bundle radiator as claimed in claim 1, the focal length that it is characterized in that wherein said paraboloidal reflector is 50～1200mm, the diameter that straight tube shape amplifies is D=200～4000mm, the length L that straight tube shape amplifies=100～2000.
3. acoustic wave bundle radiator as claimed in claim 1 is characterized in that the area S of wherein said transaudient pipeline porch
0And the pass between the area of the ring surface in reverse exit is: S=S
0e
m, wherein m is the length g of transaudient pipeline and from transaudient pipe outlet to reverse midline length h sum between the head outlet.
4. acoustic wave bundle radiator as claimed in claim 1, the end blade outlet angle that it is characterized in that wherein said annular guider is α, α meets the following conditions: the extended line of exit angle incides paraboloidal reflector, and emergent ray after reflection parallels with the axis of paraboloidal reflector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201700340U CN201123122Y (en) | 2007-08-03 | 2007-08-03 | Sound wave beaming irradiator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201700340U CN201123122Y (en) | 2007-08-03 | 2007-08-03 | Sound wave beaming irradiator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201123122Y true CN201123122Y (en) | 2008-09-24 |
Family
ID=40010362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201700340U Expired - Lifetime CN201123122Y (en) | 2007-08-03 | 2007-08-03 | Sound wave beaming irradiator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201123122Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101784000B (en) * | 2009-11-10 | 2012-09-05 | 天津中环真美声学技术有限公司 | Reflection-type paraboloid sound guiding device |
| CN108600908A (en) * | 2018-06-13 | 2018-09-28 | 清华大学 | Reflection-type air acoustic horn |
-
2007
- 2007-08-03 CN CNU2007201700340U patent/CN201123122Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101784000B (en) * | 2009-11-10 | 2012-09-05 | 天津中环真美声学技术有限公司 | Reflection-type paraboloid sound guiding device |
| CN108600908A (en) * | 2018-06-13 | 2018-09-28 | 清华大学 | Reflection-type air acoustic horn |
| CN108600908B (en) * | 2018-06-13 | 2020-07-21 | 清华大学 | Reflection type air sound horn |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080924 Effective date of abandoning: 20070803 |