CN207802375U - A kind of long-range loudspeaker - Google Patents
A kind of long-range loudspeaker Download PDFInfo
- Publication number
- CN207802375U CN207802375U CN201820294231.1U CN201820294231U CN207802375U CN 207802375 U CN207802375 U CN 207802375U CN 201820294231 U CN201820294231 U CN 201820294231U CN 207802375 U CN207802375 U CN 207802375U
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- opening
- loud speaker
- eqalizing cricuit
- long
- adjacent
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Abstract
The utility model is related to a kind of long-range loudspeakers, including shell and the loud speaker being fixed on shell, the sounding face direction of loud speaker is external, eqalizing cricuit is installed on the sounding face of loud speaker, it is open at least provided with four in the vertical direction of eqalizing cricuit, opening is in indent on the inside of eqalizing cricuit, and the height being each open is identical, distance is identical between adjacent two opening, and the center spacing of adjacent two opening is sum of the distance between the height being individually open and adjacent two opening.The long-range loudspeaker of the utility model is reasonable in design, opening is set by installing eqalizing cricuit before the loud speaker of loudspeaker, and in the vertical direction of eqalizing cricuit, is controlled by the vertical directivity to loudspeaker medium-high frequency sound, it realizes long-range public address, effectively inhibits uttering long and high-pitched sounds for head microphone.
Description
Technical field
The utility model belongs to technical field of acoustics, specifically refers to a kind of long-range loudspeaker.
Background technology
Traditionally, loudspeaker is generally hung at loins, is used with head microphone.Loudspeaker on the market is generally flat
Structure, loud speaker is directly fixed in shell, and horizontal and vertical directive property is wider during public address, easily causes and wears
Microphone whistle to be easily destroyed the atmosphere of entire public address environment and be easy that high-pitched speaker unit overload is made to burn, and makes
The sound transmission gain and sound reproduction power of entire sound reinforcement system are restricted, and propagation distance is not far.
Invention content
That the technical problem to be solved by the present invention is to provide a kind of long-range public address effects is good, effectively inhibits head microphone
The long-range loudspeaker uttered long and high-pitched sounds.
In order to solve the above technical problems, the utility model uses following technical scheme：
A kind of long-range loudspeaker, including shell and the loud speaker being fixed on shell, the sounding face direction of loud speaker is external,
Eqalizing cricuit is installed on the sounding face of above-mentioned loud speaker, is open at least provided with four in the vertical direction of eqalizing cricuit, above-mentioned opening
It is in indent on the inside of eqalizing cricuit, the height being each open is identical, and distance is identical between adjacent two opening, and in adjacent two opening
In the heart away from sum of the distance between the height to be individually open and adjacent two opening.
Preferably, the center of adjacent two opening is smaller than or is equal to 21.5mm.
Preferably, above-mentioned eqalizing cricuit outer profile is in rounded shape, and is matched with the sounding face of loud speaker.
The utility model has following remarkable result：
The long-range loudspeaker of the utility model is reasonable in design, by installing eqalizing cricuit before the loud speaker of loudspeaker, with
And opening is set in the vertical direction of eqalizing cricuit, it is controlled, is realized by the vertical directivity to loudspeaker medium-high frequency sound
Long-range public address effectively inhibits uttering long and high-pitched sounds for head microphone.
Description of the drawings
Attached drawing 1 is the utility model main structure diagram；
Attached drawing 2 is the utility model side view internal structure schematic diagram；
Attached drawing 3 is the utility model eqalizing cricuit dimensional structure diagram；
Attached drawing 4 is the utility model eqalizing cricuit main structure diagram；
Attached drawing 5 is A-A schematic cross-sectional views in attached drawing 4.
Accompanying drawings symbol description：
1 shell, 2 loud speaker, 3 eqalizing cricuit 31 is open.
Specific implementation mode
In order to facilitate the understanding of those skilled in the art, below in conjunction with attached drawing and embodiment to the utility model into traveling
One step is described in detail.
As shown in attached drawing 1~5, a kind of long-range loudspeaker, including the shell 1 of loudspeaker and it is fixed on raising one's voice on shell 1
The sounding face direction of device 2, loud speaker 2 is external；Circuit board is additionally provided in shell 1, loud speaker 2 is connect with circuit board.
In the present embodiment, eqalizing cricuit 3 is installed on the sounding face of loud speaker 2, the outer profile of the eqalizing cricuit 3 is rounded
The outer profile of shape, eqalizing cricuit 3 is matched with the sounding face of loud speaker 2, so as to greatly improve installation effectiveness；In eqalizing cricuit 3
Vertical direction is at least provided with four openings 31, here, the vertical direction of eqalizing cricuit 3 is set, there are four openings 31, and opening 31 is in grade
The inside of device 3 is in indent, i.e., is protruded in the both sides of 3 inside opening 31 of eqalizing cricuit, and the height of each opening 31 is identical, and adjacent two open
Distance is identical between mouth 31, and the center spacing of adjacent two opening 31 is that the height of single opening 31 and adjacent two are open between 31
Sum of the distance.
In the present embodiment, the center of adjacent two opening 31 is smaller than or is equal to 21.5mm, and 21.5mm corresponds to the upper of 16kHz
Limit frequency wavelength.In order to reduce the comb-filter effect of medium-high frequency, i.e., each sound that 31 send out that is open can be mutually coupled and cause
The acoustic centre of source between the sawtooth pattern frequency response of medium-high frequency section, opening 31, here, being defaulted as 31 centers of opening, spacing needs small
In the wavelength of upper limiting frequency.
The present embodiment is reasonable in design, by the installation eqalizing cricuit 3 before the loud speaker 2 of loudspeaker, and in eqalizing cricuit 3
Vertical direction four openings 31 are set, to which the sounding face of loud speaker 2 is divided into four regions, then original point sound source is hanging down
The upward approximation of histogram becomes line source, and 2 medium-high frequency sound 500Hz of loud speaker is obtained with the directive property of super band in vertical direction
Control is arrived, former vertical directivity is more than 120 °, has added eqalizing cricuit 3 that can be decreased to 75 ° later hereinafter, being used with head microphone
When can effectively inhibit to utter long and high-pitched sounds；And the Spherical wave approximation that loud speaker 2 was sent out originally becomes cylindrical wave, acoustic pressure when propagation distance doubles
Grade decaying is less than 6 decibels, i.e. spherical wave distance doubles 6 decibels of decaying, then the distance of sound transmission can be farther.
The utility model eqalizing cricuit 3 is open 31 quantity according to several openings 31 of the cone area design of loud speaker 2, opening
More than 31 vertical directivities are smaller；In order to avoid not touching eqalizing cricuit 3 when 2 peak swing of loud speaker, 2 cone of loud speaker with etc.
There is gap between change 3 medial surface of device.
Above-described embodiment is preferred embodiment of the utility model, and non-limiting exhaustion, this reality under same idea
There can also be other variations with novel.It should be noted that under the premise of not departing from the present utility model design, appoint
What obvious replacement is within scope of protection of the utility model.
Claims (3)
1. a kind of long-range loudspeaker, including shell（1）With the loud speaker being fixed on shell（2）, the sounding face direction of loud speaker
It is external, it is characterised in that：Eqalizing cricuit is installed on the sounding face of the loud speaker（3）, at least set in the vertical direction of eqalizing cricuit
There are four openings（31）, the opening is in indent on the inside of eqalizing cricuit, and the height being each open is identical, the spacing of adjacent two opening
From identical, and the center spacing of adjacent two opening be the height being individually open and adjacent two be open between sum of the distance.
2. long-range loudspeaker according to claim 1, it is characterised in that：The center of adjacent two opening is smaller than or is equal to
21.5mm。
3. long-range loudspeaker according to claim 1 or 2, it is characterised in that：The eqalizing cricuit outer profile is in rounded shape, and
It is matched with the sounding face of loud speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820294231.1U CN207802375U (en) | 2018-03-02 | 2018-03-02 | A kind of long-range loudspeaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820294231.1U CN207802375U (en) | 2018-03-02 | 2018-03-02 | A kind of long-range loudspeaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207802375U true CN207802375U (en) | 2018-08-31 |
Family
ID=63275808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820294231.1U Active CN207802375U (en) | 2018-03-02 | 2018-03-02 | A kind of long-range loudspeaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207802375U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022014166A1 (en) * | 2020-07-13 | 2022-01-20 | パナソニックＩｐマネジメント株式会社 | Sound reproduction device |
-
2018
- 2018-03-02 CN CN201820294231.1U patent/CN207802375U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022014166A1 (en) * | 2020-07-13 | 2022-01-20 | パナソニックＩｐマネジメント株式会社 | Sound reproduction device |
| JP7369943B2 (en) | 2020-07-13 | 2023-10-27 | パナソニックＩｐマネジメント株式会社 | sound reproduction device |
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