CN208971816U - Public-address system - Google Patents
Public-address system Download PDFInfo
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- CN208971816U CN208971816U CN201821898291.0U CN201821898291U CN208971816U CN 208971816 U CN208971816 U CN 208971816U CN 201821898291 U CN201821898291 U CN 201821898291U CN 208971816 U CN208971816 U CN 208971816U
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- public
- full range
- address system
- shell
- sound column
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Abstract
The utility model relates to a kind of public-address systems, including bass box, full range sound column and telescopic component.Bass box includes first shell and the first loudspeaking part inside first shell.Full range sound column includes second shell and the second loudspeaking part in second shell, and the outer wall of the first shell is formed with the holding tank for accommodating the full range sound column.Bass box and full range sound column are connect with telescopic component, and telescopic component is for adjusting full range sound column at a distance from ground.The sound transmission of the public-address system is apart from remote and sound clarity.
Description
Technical field
The utility model relates to public address technical fields, more particularly to a kind of public-address system.
Background technique
Public-address system is essential a kind of device such as performing, give a lecture or gather in many activities.Traditional
Small sized flow public-address system mostly use greatly storage battery flow speaker, storage battery speaker be point sound source spherical wave tune, acoustic pressure with
The increase decaying of propagation distance is fast, causes sound transmission apart from short, and storage battery speaker often lands and puts use, easy to form
Ground sound wave reflects direct sound wave, so that audition face sound quality is become muddy, in addition current storage battery speaker, bandwidth is narrow, and the distortion factor is big, sound
Press small, clarity is low.
Utility model content
Based on this, it is necessary to provide a kind of public-address system, the sound transmission of the public-address system is apart from remote, sound clarity and side
Just mobile transport.
A kind of public-address system, comprising:
Bass box, the first loudspeaking part including first shell and inside the first shell；
Full range sound column, the second loudspeaking part including second shell and in the second shell, the first shell
Outer wall is formed with the holding tank for accommodating the full range sound column；And
Telescopic component, the bass box and the full range sound column are connect with the telescopic component, and the telescopic component is used
In the adjusting full range sound column at a distance from ground.
Above-mentioned public-address system includes bass box and full range sound column, since full range sound column is line source, and the acoustic pressure of line source
With being less than the acoustic pressure of this point sound source of bass box apart from increased attenuation rate with apart from increased attenuation rate, therefore the public-address system
Sound transmission range it is wider, clarity of the same propagation apart from lower sound is higher.Since the full range sound column can pass through group of stretching
Part adjusts the distance between itself and ground, therefore can be by the height adjustment of the full range sound column to certain terrain clearance, so that people
Ear can be located at the best sounding position of the high frequency sound wave of full range sound column, and be perpendicularly oriented to narrow and and ground due to full range sound column
Distance is big, it is possible to reduce ground sound wave reflects direct sound wave, so that sound is more clear.The full range sound column of the public-address system can also be received
It is contained in holding tank, it is whole that case shape is presented, to facilitate the transport and movement of the public-address system.In addition, in the public-address system
Bass box audio can dive to 30Hz, and the upper audio limit of full range sound column can reach 20kHz so that the public-address system it is whole
Body bandwidth and power efficiency are bigger.
The telescopic component includes adjusting loop bar, connecting rod and slide rail, the sliding in one of the embodiments,
Guide rail is fixed on the cell wall of the holding tank, and the adjusting loop bar is slidably matched with the slide rail, the connecting rod with
Full range sound column connection, the connecting rod be inserted in the adjustings loop bar it is interior and with the adjusting loop bar slidable connection.
The public-address system further includes pressing handle in one of the embodiments, and the telescopic component is two, two
Opposite with the full range sound column two sides connection respectively of the connecting rod of the telescopic component, the both ends of the pressing handle respectively with
The connecting rod connection of two telescopic components, the pressing handle are equipped with button, and the button is each described for controlling
The opposite sliding and opposite locking for adjusting loop bar and connecting rod in telescopic component, the button are also used to control each described stretch
The opposite sliding and opposite locking for adjusting loop bar and slide rail in contracting component.
The pressing handle is located at the top of the full range sound column in one of the embodiments, and works as the full range sound
When column is accommodated in holding tank, the pressing handle is located at the top of the bass box.
The public-address system further includes pulley in one of the embodiments, and the pulley is set to the bottom of the bass box
Portion.
The pulley is rubber pulley in one of the embodiments,.
The public-address system further includes two channel number word power amplifiers in one of the embodiments, and described first raises
Sound part and the second loudspeaking part are electrically connected with the two channel number words power amplifier, and the two channel number words power is put
Big device is for driving the first loudspeaking part and the second loudspeaking part sounding.
The public-address system further includes power supply storage battery and charging manager, the charging valve in one of the embodiments,
Reason device is connect with the power supply storage battery, and the charging manager is used to charge for the power supply storage battery, the two channel number words function
Rate amplifier and the power supply storage battery are electrically connected, and the power supply storage battery is used to supply for the two channel number words power amplifier
Electricity.
The bass box is band general formula bass box in one of the embodiments,.
The first shell, which is equipped with, in one of the embodiments, leads acoustic aperture with what the first shell inside was connected to.
Detailed description of the invention
Fig. 1 is public-address system structural schematic diagram described in an embodiment of the present invention, and full range sound column is located at described at this time
Outside holding tank；
Fig. 2 is public-address system structural schematic diagram described in another embodiment of the utility model, and full range sound column is located at institute at this time
It states outside holding tank；
Fig. 3 is public-address system structural schematic diagram described in Fig. 2, and full range sound column is located in the holding tank at this time.
Specific embodiment
It is below in conjunction with attached drawing and specifically real for the purpose of this utility model, technical solution and advantage is more clearly understood
Mode is applied, the utility model is described in further detail.It should be understood that the specific embodiments described herein
Only to explain the utility model, the protection scope of the utility model is not limited.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model
The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be
The purpose of description specific embodiment, it is not intended that in limitation the utility model.Term " and or " used herein packet
Include any and all combinations of one or more related listed items.
As shown in Figure 1, an embodiment of the present invention proposes a kind of public-address system 10, including bass box, full range sound column 200
With telescopic component 300.Bass box includes that first shell 110 and the first loudspeaking part inside first shell 110 are (attached not shown
Out).Full range sound column 200 includes second shell 210 and the second loudspeaking part 220 in second shell 210, the first shell
110 outer wall is formed with the holding tank 120 for accommodating the full range sound column 200.Bass box and full range sound column 200 with it is flexible
Component 300 connects, and telescopic component 300 is for adjusting full range sound column 200 at a distance from ground.
Above-mentioned public-address system 10 includes bass box and full range sound column 200, since full range sound column 200 is line source, and line sound
The acoustic pressure in source with apart from increased attenuation rate be less than this point sound source of bass box acoustic pressure with apart from increased attenuation rate (propagate away from
From often doubling, the acoustic pressure of point sound source decays six decibels, and the acoustic pressure of line source i.e. decaying three decibels), therefore the public address
The sound transmission range of device 10 is wider, and clarity of the same propagation apart from lower sound is higher.Since the full range sound column 200 can lead to
Cross telescopic component 300 adjust the distance between itself and ground, therefore can by the height adjustment of the full range sound column 200 to it is certain from
At ground height (about 1.2m~1.5m), human ear is enabled to be located at the best sounding position of the high frequency sound wave of full range sound column 200.And
And due to full range sound column 200 be perpendicularly oriented to it is narrow and with ground distance it is big, it is possible to reduce ground sound wave reflect direct sound wave so that
Sound is more clear.The full range sound column 200 of the public-address system 10 can be accommodated in holding tank 120, whole that case shape is presented, thus
Facilitate the transport and movement of the public-address system 10.In addition, the audio of the bass box in the public-address system 10 can dive to 30Hz, and
The upper audio limit of full range sound column 200 can reach 20kHz so that the whole bandwidth and power efficiency of the public-address system 10 are bigger.
In the present embodiment, first shell 110 is made of timber.Timber has preferable Echo and obturation effect,
The tone color of the sound of outflow can be made softer.Certainly, in other embodiments, first shell 110 can also use other
Material is made, such as plastics.
Optionally, bass box is band general formula bass box.Tone color with general formula bass box is more soft, and dive frequency is more
It is low.Certainly, in other embodiments, bass box may be the low of inverted phase type bass box, closed bass box or other forms
Speaker.
Further, first shell 110, which is equipped with, leads acoustic aperture 111 with what is be connected to inside first shell 110.Lead acoustic aperture 111
The low-frequency sound wave that the first loudspeaking part can be generated exports, and is conducive to improve speaker efficiency, and increase amount of bass sense.The present embodiment
In, leading acoustic aperture 111 is two, and two are led the side that acoustic aperture 111 is arranged at intervals at bass box.Certainly, in other embodiments, lead
The quantity of acoustic aperture 111 and setting position can also be adjusted according to actual needs.
In the present embodiment, second shell 210 is made of ABS plastic.Certainly, in other embodiments, second shell 210
It can also be made of other materials.
Optionally, the second loudspeaking part 220 is at least two, and at least two second loudspeaking parts 220 are embedded at second shell
On 210 and spacing parallel arranging is arranged.In the present embodiment, the second loudspeaking part 220 is four.Certainly, in other embodiments, institute second
The number of loudspeaking part 220 can also be more than four or less than four.
Optionally, the first loudspeaking part and the second loudspeaking part 220 are loudspeaker.Certainly, in other embodiments, the first loudspeaking
Part and the second loudspeaking part 220 or other forms.
Further, as shown in Fig. 2, loudspeaker arrangement further includes veil 230, veil 230 be fixed on second shell 210 it is outer and
It covers on the second loudspeaking part 220.Veil 230 can play dust-proof effect for the second loudspeaking part 220, extend the second loudspeaking part
220 service life.
Specifically, telescopic component 300 includes adjusting loop bar 310, connecting rod 320 and slide rail 330, slide rail 330
It is fixed on the cell wall of holding tank 120, adjusts loop bar 310 and be slidably matched with slide rail 330, connecting rod 320 and full range sound column
200 connection, connecting rod 320 be inserted in adjust loop bar 310 in and with adjust 310 slidable connection of loop bar.The setting facilitates adjusting
The terrain clearance of full range sound column 200.
In the present embodiment, adjusts loop bar 310, connecting rod 320 and slide rail 330 and be all made of aluminum alloy materials and be made, aluminium
Alloy material has many advantages, such as that light, oxidation resistance is strong and low in cost.
Specifically, the cell wall of holding tank 120 is equipped with guide-track groove, one end of slide rail 330 be set in guide-track groove and with
The cell wall of guide-track groove connects, the other end protruding rail slot of slide rail 330, and slide rail 330 and adjusting loop bar 310 can be received
It is contained in guide-track groove.When the setting is so that full range sound column 200 is accommodated in accommodating groove, contact of the full range sound column 200 with bass box
Even closer, the structure of entire public-address system 10 is more compact.
Further, public-address system 10 further includes pressing handle 340, and telescopic component 300 is two, two telescopic components
Two sides opposite with full range sound column 200 are connect 300 connecting rod 320 respectively, and the both ends for pressing handle 340 are flexible with two respectively
The connecting rod 320 of component 300 connects, and pressing handle 340 is equipped with button 341, and button 341 is for controlling each telescopic component
The opposite sliding for adjusting loop bar 310 and connecting rod 320 and opposite locking, button 341 in 300 are also used to control each flexible group
The existing to sliding and opposite locking of loop bar 310 and slide rail 330 is adjusted in part 300.By full range when the setting is convenient to use
Sound column 200 is fixed on certain terrain clearance, at the same also convenient transportation or it is mobile when full range sound column 200 is accommodated in accommodating groove
It is interior.In the present embodiment, pressing handle 340 is made of ABS plastic, light and durable.Certainly, in other embodiments, press
Other materials can also be used in handle 340, as rubber or resin are made.
Specifically, connecting rod 320 is equipped with for offseting and scalable first convex block with the inner wall for adjusting loop bar 310, is adjusted
Section loop bar 310 is equipped with for offseting with slide rail 330 and telescopic second convex block.When button 341 is not pressed, the
One convex block offsets with loop bar 310 is adjusted, and the second convex block offsets with slide rail 330, and full range sound column 200 is fixed on certain liftoff height
At degree；When button 341 is pressed, the first convex block is abutted with the releasing of loop bar 310 is adjusted, and the second convex block and slide rail 330 solve
Except abutting, by pushing pressing handle 340 that the terrain clearance of full range sound column 200 is adjusted.
Specifically, as shown in figures 1 and 3, pressing handle 340 is located at the top of full range sound column 200, and works as full range sound column
200 when being accommodated in holding tank 120, and pressing handle 340 is located at the top of bass box.The setting facilitates lifting pressing handle 340.
Public-address system 10 further includes pulley 400 in one of the embodiments, and pulley 400 is set to the bottom of bass box.It should
Setting effortlessly pushes public-address system 10 convenient for light.
In the present embodiment, pulley 400 is rubber pulley 400.Rubber pulley 400 has the effect of damping, helps to reduce
In 10 moving process of public-address system, vibration suffered by bass box and full range sound column 200 is prevented to bass box and full range sound column
200 cause to damage.
Further, public-address system 10 further includes two channel number word power amplifiers (attached drawing is not shown), the first loudspeaking part
It is electrically connected with two channel number word power amplifiers with the second loudspeaking part 220, two channel number word power amplifiers are for driving
220 sounding of first loudspeaking part and the second loudspeaking part.Two channel number word power amplifiers, which have, is distorted small, low noise, dynamic range
The sound quality of the advantages that big, the sound that public-address system 10 can be made to play are more excellent.
In the present embodiment, two channel number word power amplifiers are set to the inside of first shell 110.Certainly, in other implementations
In example, two channel number word power amplifiers can also be set to the inside of second shell 210.
Further, public-address system 10 further includes that power supply storage battery (attached drawing is not shown) and charging manager are (attached not shown
Out), charging manager is connect with power supply storage battery, and charging manager is used for as power supply storage battery charging, two channel number word power amplifications
Device and power supply storage battery are electrically connected, and power supply storage battery is used to power for two channel number word power amplifiers.The setting is so that the public address
Without connecting external power supply, convenient, flexible movement when device 10 uses, and it is suitable for outdoor broadcasting occasion.
In the present embodiment, power storage battery and charging manager are set to the inside of first shell 110.Certainly, in other realities
It applies in example, power supply storage battery and charging manager can also be set on the inside of second shell 210.In the present embodiment, storage battery of powering
Voltage rating is 12V.Certainly, in other embodiments, the voltage rating of storage battery of powering can also be adjusted according to actual needs
It is whole.
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
Above embodiments only express the several embodiments of the utility model, and the description thereof is more specific and detailed, but simultaneously
The limitation to utility model patent range therefore cannot be interpreted as.It should be pointed out that for the ordinary skill people of this field
For member, without departing from the concept of the premise utility, various modifications and improvements can be made, these belong to this reality
With novel protection scope.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.
Claims (10)
1. a kind of public-address system characterized by comprising
Bass box, the first loudspeaking part including first shell and inside the first shell；
Full range sound column, the second loudspeaking part including second shell and in the second shell, the outer wall of the first shell
It is formed with the holding tank for accommodating the full range sound column；And
Telescopic component, the bass box and the full range sound column are connect with the telescopic component, and the telescopic component is for adjusting
The full range sound column is saved at a distance from ground.
2. public-address system according to claim 1, which is characterized in that the telescopic component includes adjusting loop bar, connecting rod
And slide rail, the slide rail are fixed on the cell wall of the holding tank, the adjusting loop bar and the slide rail are sliding
Dynamic cooperation, the connecting rod are connect with the full range sound column, the connecting rod be inserted in the adjusting loop bar it is interior and with the tune
Save loop bar slidable connection.
3. public-address system according to claim 2, which is characterized in that further include pressing handle, the telescopic component is two
It is a, opposite with the full range sound column two sides connection respectively of the connecting rod of two telescopic components, the two of the pressing handle
End is connect with the connecting rod of two telescopic components respectively, and the pressing handle is equipped with button, and the button is for controlling
The opposite sliding for adjusting loop bar and connecting rod and opposite locking, the button in each telescopic component are also used to control often
The existing to sliding and opposite locking of loop bar and slide rail is adjusted in a telescopic component.
4. public-address system according to claim 3, which is characterized in that the pressing handle is located at the upper of the full range sound column
Side, and when the full range sound column is accommodated in holding tank, the pressing handle is located at the top of the bass box.
5. public-address system according to claim 1, which is characterized in that further include pulley, the pulley is set to the bass
The bottom of case.
6. public-address system according to claim 5, which is characterized in that the pulley is rubber pulley.
7. public-address system according to any one of claim 1 to 6, which is characterized in that further include two channel number word power
Amplifier, the first loudspeaking part and the second loudspeaking part are electrically connected with the two channel number words power amplifier, institute
Two channel number word power amplifiers are stated for driving the first loudspeaking part and the second loudspeaking part sounding.
8. public-address system according to claim 7, which is characterized in that it further include power supply storage battery and charging manager, it is described
Charging manager is connect with the power supply storage battery, and the charging manager is used to charge for the power supply storage battery, two channel
Digital power amplifier and the power supply storage battery are electrically connected, and the power supply storage battery is used to be the two channel number words power amplification
Device power supply.
9. public-address system according to any one of claim 1 to 6, which is characterized in that the bass box is that band general formula is low
Speaker.
10. public-address system according to any one of claim 1 to 6, which is characterized in that the first shell be equipped with
What is be connected to inside the first shell leads acoustic aperture.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821898291.0U CN208971816U (en) | 2018-11-16 | 2018-11-16 | Public-address system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821898291.0U CN208971816U (en) | 2018-11-16 | 2018-11-16 | Public-address system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208971816U true CN208971816U (en) | 2019-06-11 |
Family
ID=66765570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821898291.0U Active CN208971816U (en) | 2018-11-16 | 2018-11-16 | Public-address system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208971816U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117156368A (en) * | 2023-10-30 | 2023-12-01 | 深圳市维尔晶科技有限公司 | Outdoor loudspeaker capable of self-adjusting volume and control method thereof |
-
2018
- 2018-11-16 CN CN201821898291.0U patent/CN208971816U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117156368A (en) * | 2023-10-30 | 2023-12-01 | 深圳市维尔晶科技有限公司 | Outdoor loudspeaker capable of self-adjusting volume and control method thereof |
| CN117156368B (en) * | 2023-10-30 | 2024-01-26 | 深圳市维尔晶科技有限公司 | Outdoor loudspeaker capable of self-adjusting volume and control method thereof |
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