CN105338439A - Flat sound device - Google Patents
Flat sound device Download PDFInfo
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- CN105338439A CN105338439A CN201410253272.2A CN201410253272A CN105338439A CN 105338439 A CN105338439 A CN 105338439A CN 201410253272 A CN201410253272 A CN 201410253272A CN 105338439 A CN105338439 A CN 105338439A
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- China
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- flat panel
- panel loudspeaker
- driver
- phonation board
- low frequency
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Abstract
The invention provides a flat sound device, and belongs to the technical field of sound equipment. The flat sound device comprises a sounding plate, a housing and a driver arranged between the back cover portion of the housing and the sounding plate, wherein the driver is attached to the sounding plate and is suspended relative to the back cover portion. The flat sound device is good in low-frequency effect and low in realization cost.
Description
Technical field
The invention belongs to sound technique field, relate to flat panel loudspeaker (FlatSpeaker), particularly relate to the flat panel loudspeaker of driver relative to the unsettled setting of rear shell portion.
Background technology
Flat panel loudspeaker forms a whole set of entire effect system primarily of source of sound input equipment, signal amplifier (power amplifier) and loud speaker, vitals in signal amplifier comprises driver (Exciter, be also called " excitation son " or " exciter ") and phonation board (being also called " oscillating plate "), bending wave in phonation board and sounding can be excited by driving.The sound equipment that flat panel loudspeaker is formed relative to conventional horn has the following advantages: (1) directive property is very good; (2) sound attenuating is less; (3) fidelity of sound is higher; (4) profile is ultra-thin, does not take up space.Further, the alien invasion of phonation board is easy to decorate with various picture, and flat panel loudspeaker is to the good decorating effect of environment.Therefore, flat panel loudspeaker is widely used in household audio and video system, background music system, multimedia audio system, Public Address system etc.
But the larger shortcoming that flat panel loudspeaker exists is exactly that its bass tonequality is not enough, low-frequency effect is poor.Chinese Patent Application No. is that CN200520117699.6 name is called " design of flat panel loudspeaker system ", Chinese Patent Application No. is that CN200320111732.5 name is called that mode that Chinese patents such as " multiple sound tracks ultra-thin wall painting sound boxes " proposes to carry out special processing for low frequency part solves the problem of bass deficiency, but, not only effect is not quite desirable, and the cost of flat panel loudspeaker is increased obviously.
In view of this, be necessary to propose a kind of novel flat panel loudspeaker.
Summary of the invention
The object of the invention is to, improve the bass audio of flat panel loudspeaker.
For realizing above object or other objects, the invention provides a kind of flat panel loudspeaker, the driver including phonation board, housing and be arranged between the rear shell portion of described housing and described phonation board, wherein, described driver to be attached on described phonation board and the unsettled setting of rear shell portion relatively.
According to the flat panel loudspeaker of one embodiment of the invention, wherein, the gap between described driver and described rear shell portion is more than or equal to 10 millimeters.
According to the flat panel loudspeaker of further embodiment of this invention, wherein, described flat panel loudspeaker also comprise the edge being arranged on described phonation board at least for limiting described phonation board at the free-moving elastomeric element perpendicular to phonation board direction.
Particularly, described elastomeric element comprises Part I and Part II, and described Part I is fixedly installed between described phonation board and described rear shell portion, and described Part II is fixedly installed between the Portion of described phonation board and described housing.
Go back the flat panel loudspeaker of an embodiment according to the present invention, wherein, described flat panel loudspeaker also comprises frequency divider and Low frequency horn, and described frequency divider is configured to export low frequency signal frequency division to described Low frequency horn to play bass.
Preferably, at least two described Low frequency horns are positioned on the back side of described flat panel loudspeaker.
Preferably, positive pole and the negative pole of described Low frequency horn are connected negative pole and the positive pole of described driver respectively.
Alternatively, described Low frequency horn can be 4, and 4 Low frequency horns are by the corner place be placed in respectively on the back side of described flat panel loudspeaker.
Preferably, described frequency divider is configured to export high frequency signal frequency division to described driver.
Alternatively, described driver is six.
In the flat panel loudspeaker of described any embodiment before, the voice coil loudspeaker voice coil in described driver is configured to its vibratility adjustment and is increased to 2.2 millimeters to 2.7 millimeters in the direction perpendicular to described phonation board.
Technique effect of the present invention is, flat panel loudspeaker of the present invention improves low frequency audio by arrange unsettled relative to rear shell portion of driver, and not only low frequency performance is good but also can realize at low cost.
Accompanying drawing explanation
From following detailed description by reference to the accompanying drawings, will make above and other object of the present invention and advantage more complete clear, wherein, same or analogous key element adopts identical label to represent.
Fig. 1 is that the driver of the flat panel loudspeaker of prior art arranges schematic diagram.
Fig. 2 is the structural representation of the flat panel loudspeaker according to one embodiment of the invention.
Fig. 3 is the frequency division principle schematic of the frequency divider of flat panel loudspeaker embodiment illustrated in fig. 2.
Embodiment
Introduce below be of the present invention multiple may some in embodiment, aim to provide basic understanding of the present invention, be not intended to confirm key of the present invention or conclusive key element or limit claimed scope.Easy understand, according to technical scheme of the present invention, do not changing under connotation of the present invention, one of ordinary skill in the art can propose other implementations that can mutually replace.Therefore, following embodiment and accompanying drawing are only the exemplary illustrations to technical scheme of the present invention, and should not be considered as of the present invention all or the restriction be considered as technical solution of the present invention or restriction.
In this article, bass (bass) refers to the sound low section of audio frequency, typically refers to the sound of frequency lower than 250Hz.In the de-scription, directional terminology such as " front " and " afterwards " etc. used defines relative to the direction perpendicular to phonation board, generation plate sends sound wave line of propagation and is defined as " front ", relative other direction is then defined as " afterwards ", further, be to be understood that, these directional terminology are relative concepts, they for relative to description and clarification, the change in the orientation that the direction of its concrete indication can be placed according to flat panel loudspeaker and correspondingly changing.
Applicant finds, in the flat panel loudspeaker of prior art, driver wherein arrange substantially all as shown in Figure 1, the front end face (i.e. sounding face) of driver 120 is attached on phonation board 110, the rear end face of driver 120 is the housing 130(such as back covers being fixed on flat panel loudspeaker) on, therefore, driver 120 is substantially fixedly installed between housing 130 and phonation board 110, and driver 120 relatively housing 130 is fixedly installed.
Figure 2 shows that the structural representation of the flat panel loudspeaker according to one embodiment of the invention.As shown in Figure 2, it is the sectional top view of flat panel loudspeaker 20, flat panel loudspeaker 20 mainly comprises phonation board 210, one or more driver 220 and housing, its middle shell is engaged by Portion 232 and rear shell portion 231 and is formed, phonation board 210 to be fixed on basically in this housing and and form cavity between rear shell portion 231, driver 220 is arranged in the cavities.
In this embodiment, the sounding face of driver 220 be attached to phonation board 210 below on, in particular, what be different from traditional scheme as shown in Figure 1 is, the rear end of driver 220 is not be fixed on rear shell portion 231, but the unsettled setting of rear shell portion 231 relatively, such driver 220 can more freely vibrate by rear shell portion 231 relatively, when driver 220 excites phonation board 210 to vibrate, driver 220 can vibrate with phonation board 210 and produce sound wave, improving freely widely of driver 220, thus the piston like motion of self can be utilized to promote the effect of low frequency, improve low frequency audio.Preferably, the gap between driver 220 and rear shell portion 231 is set to be more than or equal to 10 millimeters.
Continue as shown in Figure 2, in the surrounding edge of phonation board 210, to arrange for limiting phonation board 210 at the free-moving elastomeric element 240 perpendicular to phonation board 210 direction, thus the vibrational degrees of freedom of the relative housing of phonation board 210 can be limited.Elastomeric element 240 can also avoid phonation board 210 being parallel to the vibrations on phonation board 210 in-plane, it play with housing fixation while, the buffering of vibrations can be provided for phonation board 210.In this embodiment, elastomeric element 240 comprises Part I and Part II, and Part I is fixedly installed between phonation board 210 and rear shell portion 231, and Part II is fixedly installed between the Portion 232 of phonation board 210 and housing.Elastomeric element 240 can be have certain flexible material, and be for example and without limitation to sponge, EVA resin, rubber, spring etc., the pliability of its relative phonation board 210 and housing is high.
In this embodiment, the particular type of phonation board 210 is not restrictive, such as it can be, but not limited to as aluminum honeycomb panel, foamed plastic KT plate, and mural painting set on the sounding face of phonation board 210 neither be restrictive, and user can optionally design.
In the embodiment shown in Figure 2, for improving its low frequency audio further, being also provided with frequency divider and Low frequency horn (not shown in Fig. 2), Figure 3 shows that the frequency division principle schematic of the frequency divider of flat panel loudspeaker embodiment illustrated in fig. 2.As shown in Figure 3, frequency divider 250 obtains power amplifier signal from the power amplifier of upstream, and frequency divider 250 is for carrying out scaling down processing, and in this embodiment, two outputs of frequency divider 250 distinguish output low frequency signals and high frequency signal; Wherein, the low frequency output of frequency divider 250 exports Low frequency horn 260 to mainly to carry out broadcasting bass, and the medium-high frequency of frequency divider 250 mainly output can export driver 220 to.Wherein, the electric capacity of the high pass filter in frequency divider 250 can reach more than 200 microfarads, thus can prevent ultra-low frequency signal (lower than 80Hz) from outputting to driver, not only realizes frequency division but also play the effect protecting driver.
In one example, Low frequency horn 260 is 4, its volume is relatively little, be positioned in corner, the back side place of flat panel loudspeaker 30 respectively, coordinate the back side set-up mode of Low frequency horn 260, as shown in Figure 3, four Low frequency horns 260 are connected in series, and the electrode input end (-) of the Low frequency horn 260 that electrode input end (+) and another of each Low frequency horn 260 are connected in series is connected; The quantity of Low frequency horn 260 is not limited to the present embodiment, and such as it also can be 1.The both positive and negative polarity of Low frequency horn 260 and the both positive and negative polarity of driver 220 are Opposite direction connections, and also, positive pole and the negative pole of Low frequency horn 260 are connected negative pole and the positive pole of driver 220 respectively.
Like this, its low-frequency effects can effectively be embodied according to the positive and negative of phase place.The particular type of Low frequency horn 260 neither be restrictive, and the thickness of Low frequency horn 260 is preferably less than the thickness of flat panel loudspeaker 20.
In one example, driver 220 can be, but not limited to be six, and their all relative rear shell portion 231 are attached to the diverse location place of phonation board 220 vacantly, and its concrete sticking position does not limit by the embodiment of the present invention.In this embodiment, for improving the reliability of driver 220, the vibratility adjustment of the voice coil loudspeaker voice coil (not shown) in driver 220 is increased to 2.2 millimeters to 2.7 millimeters in the direction perpendicular to phonation board 210, such as, vibratility adjustment is increased to 2.5 millimeters (being set to roughly 2 millimeters in prior art).
It is to be appreciated that the particular type of driver 220 does not limit by the embodiment of the present invention, it can be the device converting electrical energy into acoustic energy of other types.
Above example mainly describes flat panel loudspeaker of the present invention.Although be only described some of them embodiments of the present invention, those of ordinary skill in the art should understand, and the present invention can implement with other forms many not departing from its purport and scope.Therefore, the example shown and execution mode are regarded as illustrative and not restrictive, when do not depart from as appended each claim define the present invention spirit and scope, the present invention may contain various amendments and replacement.
Claims (10)
1. a flat panel loudspeaker (20), include phonation board (210), housing (231,232) and the driver (220) be arranged between the rear shell portion (231) of described housing and described phonation board (210), it is characterized in that, described driver (220) is attached to described phonation board (210) and goes up and rear shell portion (231) unsettled setting relatively.
2. flat panel loudspeaker (20) as claimed in claim 1, it is characterized in that, the gap between described driver (220) and described rear shell portion (231) is more than or equal to 10 millimeters.
3. flat panel loudspeaker (20) as claimed in claim 1, it is characterized in that, described flat panel loudspeaker (20) also comprise the edge being arranged on described phonation board (210) at least for limiting described phonation board (210) at the free-moving elastomeric element (240) perpendicular to phonation board (210) direction.
4. flat panel loudspeaker (20) as claimed in claim 3, it is characterized in that, described elastomeric element (240) comprises Part I and Part II, described Part I is fixedly installed between described phonation board (210) and described rear shell portion (231), and described Part II is fixedly installed between the Portion (232) of described phonation board (210) and described housing.
5. flat panel loudspeaker (20) as claimed in claim 1, it is characterized in that, described flat panel loudspeaker (20) also comprises frequency divider (250) and Low frequency horn (260), and described frequency divider (250) is configured to export low frequency signal frequency division to described Low frequency horn (260) to play bass.
6. flat panel loudspeaker (20) as claimed in claim 5, it is characterized in that, at least two described Low frequency horns (260) are positioned on the back side of described flat panel loudspeaker (30).
7. flat panel loudspeaker (20) as claimed in claim 6, it is characterized in that, positive pole and the negative pole of described Low frequency horn (260) are connected negative pole and the positive pole of described driver (220) respectively.
8. flat panel loudspeaker (20) as claimed in claim 5, it is characterized in that, described frequency divider (250) is configured to export high frequency signal frequency division to described driver (220).
9. the flat panel loudspeaker (20) as described in claim 1 or 8, is characterized in that, described driver (220) is six.
10. flat panel loudspeaker (20) as claimed in claim 1, it is characterized in that, the voice coil loudspeaker voice coil in described driver (220) is configured to its vibratility adjustment and is increased to 2.2 millimeters to 2.7 millimeters in the direction perpendicular to described phonation board (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410253272.2A CN105338439A (en) | 2014-06-10 | 2014-06-10 | Flat sound device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410253272.2A CN105338439A (en) | 2014-06-10 | 2014-06-10 | Flat sound device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105338439A true CN105338439A (en) | 2016-02-17 |
Family
ID=55288659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410253272.2A Pending CN105338439A (en) | 2014-06-10 | 2014-06-10 | Flat sound device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105338439A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107347168A (en) * | 2017-04-24 | 2017-11-14 | 时运达(深圳)电子有限公司 | Flat panel loudspeaker |
| CN108260048A (en) * | 2018-03-29 | 2018-07-06 | 赵晗焱 | A kind of sound-producing device |
| CN112422937A (en) * | 2020-11-18 | 2021-02-26 | 成都极米科技股份有限公司 | Imaging device and sound production control method |
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| WO2007052928A1 (en) * | 2005-10-31 | 2007-05-10 | Kh Chemicals Co., Ltd. | Acoustic diaphragm and speaker having the same |
| CN101656907A (en) * | 2008-08-22 | 2010-02-24 | 清华大学 | Sound box |
| CN201957227U (en) * | 2011-04-06 | 2011-08-31 | 王超 | Flat speaker |
| CN202095088U (en) * | 2011-05-20 | 2011-12-28 | 友祥科技股份有限公司 | Distortion reducing device for piezoelectric ceramics loudspeaker |
| CN203368689U (en) * | 2013-07-12 | 2013-12-25 | 宁波音王电声股份有限公司 | Flat moulded case loudspeaker box |
| CN203968340U (en) * | 2014-06-10 | 2014-11-26 | 宁波音王电声股份有限公司 | A kind of flat panel loudspeaker |
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2014
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1909742A (en) * | 2005-08-02 | 2007-02-07 | 优异塔克斯株式会社 | Waterproof microphone |
| WO2007052928A1 (en) * | 2005-10-31 | 2007-05-10 | Kh Chemicals Co., Ltd. | Acoustic diaphragm and speaker having the same |
| CN101656907A (en) * | 2008-08-22 | 2010-02-24 | 清华大学 | Sound box |
| CN201957227U (en) * | 2011-04-06 | 2011-08-31 | 王超 | Flat speaker |
| CN202095088U (en) * | 2011-05-20 | 2011-12-28 | 友祥科技股份有限公司 | Distortion reducing device for piezoelectric ceramics loudspeaker |
| CN203368689U (en) * | 2013-07-12 | 2013-12-25 | 宁波音王电声股份有限公司 | Flat moulded case loudspeaker box |
| CN203968340U (en) * | 2014-06-10 | 2014-11-26 | 宁波音王电声股份有限公司 | A kind of flat panel loudspeaker |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107347168A (en) * | 2017-04-24 | 2017-11-14 | 时运达(深圳)电子有限公司 | Flat panel loudspeaker |
| CN108260048A (en) * | 2018-03-29 | 2018-07-06 | 赵晗焱 | A kind of sound-producing device |
| CN112422937A (en) * | 2020-11-18 | 2021-02-26 | 成都极米科技股份有限公司 | Imaging device and sound production control method |
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Application publication date: 20160217 |
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