CN211860454U - Thin mural flat sound box - Google Patents

Abstract

The utility model discloses a slim mural dull and stereotyped audio amplifier, including mural frame, control circuit and backplate, the mid-mounting of mural frame has the dull and stereotyped stereo set main part of flat shape, and dull and stereotyped stereo set main part is fixed in mural frame or backplate, installs an at least speaker loudspeaker and/or at least one sound production subassembly altogether in the dull and stereotyped stereo set main part, and the front surface mounting of mural frame or dull and stereotyped stereo set main part has mural decorative cover, and speaker loudspeaker and the sound production subassembly electricity of sympathetic response are connected in control circuit respectively. The utility model discloses promote the audio effects of the dull and stereotyped audio amplifier of mural under the prerequisite of guaranteeing that slim mural dull and stereotyped audio amplifier has relatively less gross thickness and promote bass tone quality by a wide margin when making it have mural decorative effect concurrently, promote the reverberation effect.

Description

Thin mural flat sound box

Technical Field

The utility model belongs to the technical field of the mural flat panel audio amplifier technique and specifically relates to a slim mural flat panel audio amplifier is related to.

Background

In the prior art, the mural flat sound box serving as a mural pendant is installed on a wall or other use occasions, the thickness of the mural flat sound box is smaller, the total thickness of the thin mural flat sound box is generally smaller than 5cm, and the thickness of the flat sound box installed in the thin mural flat sound box is smaller than 3 cm; the total thickness of the ultrathin mural flat sound box is less than 3cm, and the thickness of the flat sound box installed in the ultrathin mural flat sound box is reduced to 1-2 cm.

Because the flat sound box installed in the mural flat sound box is limited by the thickness condition, the space for installing the loudspeaker horn in the flat sound box in the thickness direction is very limited, and only the low-power planar horn with smaller thickness can be installed in the thin mural flat sound box, however, the thin mural flat sound box is used as a sound box for playing audio files such as music, the volume of the low-power planar horn is lower, the sound quality is poorer, the sound quality is far inferior to that of the traditional loudspeaker horn, and the general planar horn has no bass effect or poor bass effect, the comprehensive reverberation effect is very poor, and the requirement of the mural flat sound box on the sound quality can not be met.

The ultra-thin mural flat sound box has a smaller installation space in the thickness direction, and cannot meet the requirement of users on the sound quality of the sound box, so that improvement is needed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a slim mural flat panel audio amplifier promotes the sound effect of mural flat panel audio amplifier, promotes bass tone quality by a wide margin, promotes the reverberation effect.

In order to realize the purpose, the utility model discloses the technical scheme who adopts is: the utility model provides a dull and stereotyped audio amplifier of slim mural painting, includes mural painting frame, control circuit and backplate, and the mid-mounting of mural painting frame has the dull and stereotyped stereo set main part of flat shape, and dull and stereotyped stereo set main part is fixed in mural painting frame or backplate, installs at least one loudspeaker and/or at least one sound production subassembly altogether in the dull and stereotyped stereo set main part, and mural painting decorative cover is installed to the front surface mounting of mural painting frame or dull and stereotyped stereo set main part, and loudspeaker and the sound production subassembly of sympathetic response electricity are.

Further, at least one plane loudspeaker box and at least one sound production subassembly box of playing together are installed to dull and stereotyped stereo set main part's inner chamber, and plane loudspeaker box and the interval of resonance sound production subassembly box set up, loudspeaker include plane loudspeaker, install at least one plane loudspeaker in a plane loudspeaker box, install at least one resonance sound production subassembly in the sound production subassembly box of playing together, install in dull and stereotyped stereo set main part's inner chamber, plane loudspeaker box or resonance sound production subassembly box control circuit, plane loudspeaker box and the preceding sound propagation face or the sound propagation window that is provided with of resonance sound production subassembly box.

Further, resonance pronunciation subassembly includes resonance vocalizing board and is used for with the vibration exciter of resonance vocalizing board, and the vibration exciter is fixed in resonance vocalizing board's the back, the vibration exciter electricity connect in control circuit, resonance vocalizing board chooses for use the honeycomb panel or the surface complex has the honeycomb panel of soft resonance pronunciation cloth.

Furthermore, the vibration exciter comprises a magnetic vibration exciting assembly connected to the control circuit and a plurality of arm bodies arranged at the outer edge of the magnetic vibration exciting assembly at intervals along the circumferential direction, the inner end of each arm body is fixedly connected with the magnetic vibration exciting assembly, and the middle part or the outer end part of each arm body is provided with a mounting part which is respectively and fixedly connected to the back of the resonance sounding board so as to realize the resonance sounding of the resonance sounding board when the magnetic vibration exciting assembly receives a vibration exciting signal of the control circuit and vibrates; the mural decorative surface layer is a soft decorative canvas which is installed on the front surface of the mural frame or the flat sound main body in a tensioning mode and used for resonance sound production.

Furthermore, the loudspeaker horn comprises a plane horn, a plurality of groups of plane horns and a plurality of groups of resonance sounding components are arranged in the inner cavity of the flat sound main body, and sound transmission grooves and/or sound transmission holes are respectively formed in the back surface of the flat sound main body corresponding to the areas of the plane horns and the resonance sounding components; the wall painting frame or the flat panel sound main body is provided with a control key and/or an external interface which are electrically connected with the control circuit, and the control circuit is provided with a wireless communication unit for wirelessly receiving control signals and/or audio data; the front surface of the flat sound main body is provided with a mural decorative surface layer which covers the plane loudspeakers and the resonance sounding components.

Further, the mural frame comprises an outer frame arranged at the outer edge,

the middle part of the mural frame is fixed with a sound reflecting plate;

the acoustic board is a thin flat plate and is provided with four side edges, and the four side edges of the acoustic board are respectively and fixedly connected with the corresponding four frames of the outer frame in a sealing manner;

the flat sound main body is suspended and fixed on the front side of the soundboard through a connecting piece, the back surface of the flat sound main body and the front surface of the soundboard are arranged in parallel at intervals, a soundproofing space is formed between the back surface of the flat sound main body and the front surface of the soundboard, and the soundproofing space is a flat space;

the anti-sound channels are respectively reserved between the periphery of the flat sound main body and the inner wall of the outer frame, and the inner sides of the anti-sound channels are respectively communicated with anti-sound spaces.

Furthermore, the outer sides of the anti-sound channels are respectively opened and communicated with the space on the front side of the outer frame, the bottoms of the anti-sound channels are respectively communicated with the anti-sound space in different directions, the adjacent two anti-sound channels are communicated with each other, and a closed channel surrounding the flat sound main body for one circle is formed around the flat sound main body.

Further, the thickness of the flat sound main body is smaller than that of the mural frame, the thickness of the mural frame is set to be 2-5cm, the thickness of the flat sound main body is set to be 1-3cm, the thickness of the sound reflecting space in the thickness direction is set to be 0.1-1cm, and the thickness of the sound reflecting channel in the thickness direction is larger than that of the sound reflecting space; the side surface or the front surface of the flat sound main body is provided with a control key, an external interface and a power supply interface, wherein the external interface comprises a data communication interface and/or a function control interface; the front surface of the flat sound body is located inside the front surface of the outer frame.

Furthermore, the flat sound body is provided with a front panel and a rear panel, the loudspeaker horn and the resonance sound production component are fixed in the flat sound body or the front panel of the flat sound body, the rear panel of the flat sound body is at least provided with at least one sound transmission groove or sound transmission hole in the area corresponding to the loudspeaker horn or the resonance sound production component, and the front panel is at least provided with a sound transmission surface or window used for transmitting sound forwards at the position corresponding to the loudspeaker horn and the resonance sound production component; the resonance sounding assembly comprises a resonance sounding board and a vibration exciter arranged on the back of the resonance sounding board, the vibration exciter comprises a magnetic vibration exciting assembly, a plastic framework, a vibration chamber and arm bodies, the magnetic vibration exciting assembly is fixedly arranged at the middle or the back of the plastic framework, a plurality of arm bodies extend out of the periphery of the plastic framework, the arm bodies are L-shaped, each arm body surrounds in the outer circular ring area of the plastic framework, the outer end part of each arm body is integrally formed with an installation part, the installation part is fixedly arranged on the back of the resonance sounding board, an arc drum surface protruding forwards is integrally formed in the front of the plastic framework or fixed on the front of the plastic framework, and the inside of the arc drum surface is hollow and forms the vibration chamber in the shape of a ring.

Furthermore, the backboard is a thin flat board and is provided with four sides, the four sides of the backboard are respectively and fixedly connected to the corresponding four frames of the outer frame in a sealing mode, the backboard is fixed to the middle or the back of the outer frame, the cavity of the mural frame is partitioned by the backboard to form a front cavity on the front side of the backboard and a rear function cavity on the front side of the backboard, and the flat sound main body is fixed to the front surface of the backboard or is fixed to the front side of the backboard in a suspension mode through a connecting piece.

After the structure is adopted, compared with the prior art, the utility model the advantage that has is: the utility model discloses promote the sound effect of the dull and stereotyped audio amplifier of mural painting under the prerequisite of guaranteeing that slim mural painting dull and stereotyped audio amplifier has relatively less gross thickness, promote bass tone quality by a wide margin when making it have the mural painting decorative effect concurrently, promote the reverberation effect.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural view of the mural flat sound box of the present invention.

Fig. 2 is a schematic structural view of the back of the mural flat sound box of the present invention.

Fig. 3 is a sectional view of the mural flat sound box of the present invention.

Fig. 4 is a schematic structural view of the present invention in which the sound reflecting plate and the back plate are mounted on the rear side of the flat sound body.

Fig. 5 is a schematic structural view of the flat panel sound main body of the present invention.

Fig. 6 is a schematic structural view of the back surface of the flat sound body of the present invention.

Fig. 7 is an exploded schematic view of the flat panel sound main body of the present invention.

Fig. 8 is a schematic structural view of the vibration exciter of the present invention.

Fig. 9 is a schematic view of the internal structure of the flat sound body of the present invention.

The labels in the figure are:

the 1-wall picture frame 11 sound-reflecting space 12 sound-reflecting channel 13 outer frame 14 rear functional chamber 15 front chamber.

2 the panel sound body 22, the panel sound chamber 23, the sound-transmitting groove 24, the connector 25, the mural decorative surface layer 26, the control key 27, the peripheral interface 28, the front panel 29 and the rear panel.

31 resonance sounding component 311 resonance sounding board 312 exciter 32 plane horn 33 magnetic vibration component 34 plastic frame 35 arm 36 arc drum surface 37 mounting 38 glue layer 39 electrode.

4 an acoustic panel.

5 a back plate.

Detailed Description

The following are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby.

A thin mural flat sound box is shown in figures 1 to 9 and comprises a mural frame 1, a control circuit and a back plate 5, wherein a flat sound main body 2 is installed in the middle of the mural frame 1, the flat sound main body 2 is fixed on the mural frame 1 or the back plate 5, at least one loudspeaker and at least one resonance sound component 31 are installed in the flat sound main body 2, a mural decorative surface layer 25 is installed on the front surface of the mural frame 1 or the flat sound main body 2, and the loudspeaker and the resonance sound component 31 are respectively and electrically connected to the control circuit. The flat sound main body 2 fixed in the wall painting frame 1 is provided with a plurality of groups of plane loudspeakers 32 and a plurality of groups of resonance sound production components 31, the loudspeaker loudspeakers comprise the plane loudspeakers 32, the plane loudspeakers 32 are relatively small in thickness, the plurality of groups are matched for use to realize the effect of improving the sound effect on the premise of having relatively small thickness, the thickness of the resonance sound production components 31 is smaller than that of the plane loudspeakers 32 with the same power, therefore, the resonance sound production components 31 with larger power can be selected for use in the thin wall painting flat sound box, the thin wall painting flat sound box has excellent bass expressive force in the aspect of sound quality, the bass effect is excellent, the resonance sound production components 31 also have certain expressive force in the middle sound part, the middle sound tone part is matched with the plane loudspeakers 32 to increase the sound quality of middle sound, for example, the plane loudspeakers 32 with better expressive force of a plurality of high tone parts, the plane loudspeakers 32 with better expressive force of a, make thin mural flat sound box have relative balanced high pitch, middle voice and bass, and all have better expressive force at high pitch, middle voice and bass to realize promoting thin mural flat sound box's tone quality, with the problem that thin mural flat sound box of solving prior art does not have bass or bass tone quality range.

The preferred, at least one plane loudspeaker box and at least one sound production subassembly box of playing together are installed to dull and stereotyped stereo set main part 2's inner chamber, plane loudspeaker box and the interval setting of sound production subassembly box of playing together, plane loudspeaker box and the sound production subassembly box of playing together are installed respectively in different regions, avoid plane loudspeaker 32 and the mutual interference of sound production subassembly 31 of playing together, it is specific, install a plurality of plane loudspeaker 32 in the plane loudspeaker box, play sound production subassembly 31 of installing in the sound production subassembly box altogether, in order to promote tone quality, at dull and stereotyped stereo set main part 2's inner chamber, install control circuit in plane loudspeaker box or the sound production subassembly box of playing together. The front of the plane horn box and the resonance sounding component box is provided with a sound transmission surface or a sound transmission window, so that main sound emitted by the loudspeaker and the resonance sounding component 31 is directly transmitted to the front of the thin mural flat sound box.

The resonance sounding assembly 31 comprises a resonance sounding board 311 and an exciter 312, the exciter 312 is fixed on the back of the resonance sounding board 311, the exciter 312 resonates with the resonance sounding board 311 for sounding, the exciter 312 is electrically connected to the control circuit, and the resonance sounding board 311 is a honeycomb board or a honeycomb board with soft resonance sounding cloth compounded on the surface. The vibration exciter 312 correspondingly vibrates after receiving an audio signal or an excitation signal converted from the audio signal, the vibration exciter 312 is mainly used for generating mechanical vibration, the resonance sounding board 311 and the decorative canvas fixed on the resonance sounding board 311 make sounds by means of the resonance of the vibration exciter 312 and the resonance sounding board 311, wherein, the material hardness of the resonance sounding board 311 is relatively high, the resonance sounding board 311 mainly gives high and middle sounds during resonance sounding, the expressive force of the resonance sounding board 311 at the high and middle sounds is relatively better, the decorative canvas is matched with the decorative canvas giving resonance sounding with the vibration exciter 312, the material hardness of the decorative canvas is relatively lower, the resonance sounding component 31 has better tone quality and expressive force at the low sound part, the decorative canvas makes the decorative canvas give sounds by the resonance of the decorative canvas, and other soft materials are relatively better expressive force at the low sound exciter during resonance sounding, the resonance sound generation assembly 31 has a better sound quality and expressive power in the low-pitched part, and therefore, the resonance sound generation assembly 31 has a better sound quality and expressive power in each of the high-pitched, the middle-pitched and the low-pitched parts. In addition, the sound waves propagated to the back side of the resonance sound production component 31 are reversed through the sound reflection board 4 and then are propagated to the front side of the mural flat sound box through a sound reflection system consisting of the sound reflection space 11 and the sound reflection channel 12, so that the sound waves after being reversed are overlapped with the sound waves directly propagated to the front side of the co-sounding sound production component 31, the bass exhibition force is further enhanced, and the tone quality of a bass part is improved.

The utility model discloses can only install multiunit sympathetic response pronunciation subassembly 31 in thin mural flat audio amplifier, make thin mural flat audio amplifier that the gross thickness is less than 2 cm's ultra-thin mural flat audio amplifier, and have better high pitch, alto and bass, have higher tone quality and reverberation effect.

The utility model discloses only install multiunit plane loudspeaker 32 and multiunit sympathetic response pronunciation subassembly 31 in thin mural flat loudspeaker box, the combination uses multiple pronunciation subassembly, makes thin mural flat loudspeaker box have better tone quality and reverberation effect when having lower thickness.

The vibration exciter 312 comprises a magnetic vibration component 33 connected to the control circuit and a plurality of arm bodies 35 arranged at intervals along the circumferential direction at the outer edge of the magnetic vibration component 33, the inner end of each arm body 35 is fixedly connected to the magnetic vibration component 33, a mounting part 37 is arranged at the middle part or the outer end part, a glue layer 38 is adhered to one surface of the mounting part 37, which is attached to the resonance sounding board 311, so that the mounting parts 37 are respectively and fixedly connected to the back surface of the resonance sounding board 311 through the glue layer 38, vibration transmission and resonance are realized, noise is avoided, the magnetic vibration component 33 is fixedly connected with an electrode 39, the electrode 39 is electrically connected to the control circuit, and the resonance sounding board 311 resonates and sounds when the magnetic vibration component 33 receives a vibration excitation signal of the control circuit and vibrates; the mural decorative surface layer 25 is a soft decorative canvas for resonance sound attached to the front surface of the mural frame 1 or the flat acoustic body 2 in tension.

The total thickness of the resonance sound-producing assembly 31 depends on the thicknesses of the vibration exciter 312 and the resonance sound-producing plate 311, and the thicknesses of the vibration exciter 312 and the resonance sound-producing plate 311 are relatively small, so that the installation space required by the resonance sound-producing assembly 31 in the thickness direction is smaller, and the resonance sound-producing assembly 31 can be smoothly installed even in an ultralow installation space with the installation space smaller than 2cm or even smaller than 1.5 cm.

Specifically, the flat sound main body 2 has a front panel 28 and a rear panel 29, the speaker horn and the resonance sound component 31 are fixed inside the flat sound main body 2, or the speaker horn and the resonance sound component 31 are fixed on the front panel 28 of the flat sound main body 2, at least one sound transmission groove 23 or sound transmission hole is respectively formed in the region corresponding to the speaker horn or the resonance sound component 31 in the rear panel 29 of the flat sound main body 2, the front panel 28 is provided with a sound transmission surface or window for transmitting sound forward at least at the position corresponding to the speaker horn and the resonance sound component 31, and the main sound of the speaker horn and the resonance sound component 31 is directly transmitted toward the front of the mural flat sound box.

Specifically, the resonance sounding assembly 31 includes a resonance sounding board 311 and a vibration exciter 312 installed on the back of the resonance sounding board 311, the vibration exciter 312 includes a magnetic vibration exciting assembly 33, a plastic framework 34, a vibration chamber and an arm body 35, the magnetic vibration exciting assembly 33 is fixedly installed in the middle or the back of the plastic framework 34, a plurality of arm bodies 35 extend from the periphery of the plastic framework 34, the arm bodies 35 are L-shaped, each arm body 35 surrounds the outer circular ring area of the plastic framework 34, an installation part 37 is integrally formed at the outer end of each arm body 35, the installation part 37 is fixedly installed on the back of the resonance sounding board 311, an arc-shaped drum surface 36 protruding forwards is integrally formed or fixed in the front of the plastic framework 34, and the interior of the arc-shaped drum surface 36 is hollow and forms a vibration chamber in the shape of a ring.

Preferably, multiunit plane loudspeaker 32 and multiunit sympathetic response pronunciation subassembly 31 are installed to the inner chamber of flat sound main part 2, and sound through groove 23 or sound through hole have been seted up respectively to the back of flat sound main part 2 corresponding each plane loudspeaker 32 and the regional of sympathetic response pronunciation subassembly 31, through sound through groove 23 or sound through hole with plane loudspeaker 32 and the reverse phase sound wave conduction of the orientation back propagation of multiunit sympathetic response pronunciation subassembly 31 production when pronouncing away, avoid interfering with and reduce plane loudspeaker 32 and multiunit sympathetic response pronunciation subassembly 31's tone quality.

The control keys 26 and/or the peripheral interfaces 27 electrically connected to the control circuit are installed on the wall frame 1 or the flat sound body 2, preferably, the control keys 26, the peripheral interfaces 27 and the power supply interface are installed on the side surface or the front surface of the flat sound body 2, and the peripheral interfaces 27 include a data communication interface and/or a function control interface. The power supply interface selects a charging interface for charging a built-in rechargeable battery or a power supply interface for supplying power to the control circuit; the control circuit is provided with a wireless communication unit for wirelessly receiving the control signal and the audio data so as to realize wireless transmission of the audio file and wireless control; a control unit, an audio decoding unit and a wireless communication unit are arranged in the control circuit, and the control unit is respectively and electrically connected with the audio decoding unit, the wireless communication unit, a control key 26 and an external interface 27; each pronunciation component is electrically connected with the control unit and the audio decoding unit so as to realize the control and the music playing.

The front surface of the flat sound main body 2 is provided with a mural decorative surface layer 25, the mural decorative surface layer 25 covers each flat loudspeaker 32 and each resonance sound component 31, the thin-type mural flat sound box is generally hung on a wall, and the thin-type mural flat sound box is seen from the surface to be a mural decoration.

Preferably, the wall-mounted flat speaker includes a wall-mounted decorative cover 25, and the wall-mounted decorative cover 25 is fixed to the front surface of the outer frame 13, or the wall-mounted decorative cover 25 is fixed to the front surface of the flat speaker body 2. Preferably, a mural decorative surface layer 25 is fixed on the front surface of the flat sound body 2, the mural decorative surface layer 25 is a decorative canvas made of paper, cloth, plastic plate, metal plate or a composite laminate formed by compounding at least two material layers, and the mural decorative surface layer 25 is generally provided with various decorative patterns. Preferably, will decorate the canvas tensioning and fix the front surface at outer frame 13, perhaps, will decorate the canvas tensioning and fix the front surface at dull and stereotyped stereo set main part 2, decorate the canvas and be the tensioning state to realize pronounceing with vibration exciter 312 resonance, soft decoration canvas has fabulous bass when the pronunciation of resonance, and the bass sinks relatively deeply, and bass tone quality is better.

Preferably, the inner cavity of the flat sound main body 2 has at least one flat sound chamber 22, at least one group of plane speakers 32 or at least one group of resonance sound components 31 are installed in each flat sound chamber 22, the plane speakers 32 and the resonance sound components 31 are arranged at intervals, and the design of installation through partitioning avoids mutual interference and improves the sound quality.

Preferably, the mural frame 1 includes an outer frame 13 disposed at an outer edge, the back plate 5 is a thin flat plate, the back plate 5 has four sides, the four sides of the back plate 5 are respectively and fixedly connected to the corresponding four frames of the outer frame 13 in a sealing manner, the back plate 5 is fixed at the middle or back of the outer frame 13, the cavity of the mural frame 1 is partitioned by the back plate 5 to form a front cavity 15 at the front side of the back plate 5, a rear functional cavity 14 at the front side of the back plate 5, and the flat sound body 2 is fixed at the front surface of the back plate 5 or fixed at the front side of the back plate 5 in a suspending manner through a connecting member.

Specifically, the soundboard 4 is fixed in the middle of the outer frame 13, the periphery of the soundboard 4 is respectively in sealing fit with the outer frame 13, the inner side of the outer frame 13 is provided with an inner chamber, the inner chamber of the outer frame 13 is partitioned by the soundboard 4 and forms a front chamber 15 in front of the soundboard 4, and the flat panel sound main body 2 is fixed in the middle of the front chamber 15. The inner side of the outer frame 13 has an inner chamber, the inner chamber of the outer frame 13 is partitioned by the soundboard 4 and forms a rear function chamber 14 at the rear side of the soundboard 4; the rear function chamber 14 serves to enhance the sound-reflecting efficiency of the sound-reflecting plate 4, reduce the loss during sound-reflecting, and at the same time, to eliminate sound waves transmitted through to the back surface of the sound-reflecting plate 4, i.e., to avoid interference while reducing the loss.

The periphery of the flat sound main body 2 and the inner wall of the outer frame 13 are respectively provided with a baffle channel 12, the inner side of the baffle channel 12 is communicated with the baffle space 11, and the outer side is communicated with the space at the front side of the outer frame 13. More specifically, the outer frame 13 has four frames integrally formed or fixedly connected together, the sound-reflecting plate 4 is a thin flat plate, the sound-reflecting plate 4 is a single-layer wood plate, the sound-reflecting plate 4 can also be a composite flat plate compounded by at least a plurality of material layers, for example, other material layers are compounded on the front surface and/or the rear surface of the thin wood plate, for example, a flat cotton layer, a cloth layer, a plastic plate layer, a stone-plastic plate, a metal plate layer are compounded on the front surface or the rear surface of the thin wood plate, or a plate with a plurality of meshes distributed on the front surface or the rear surface of the thin wood plate.

The mural frame 1 comprises an outer frame 13 arranged at the outer edge, and the middle part of the mural frame 1 is fixed with a sound reflecting plate 4; the flat sound main body 2 is fixed on the front side of the soundboard 4, the flat sound main body 2 and the soundboard 4 are arranged at intervals in parallel, reverse-phase sound waves propagated towards the rear side inevitably exist in sound production of sound production components such as the plane loudspeaker 32 and the resonance sound production component 31, the traditional processing mode of the mural flat sound box is to absorb and eliminate the reverse-phase sound waves propagated towards the rear side, but the space of the mural flat sound box in the thickness direction is very limited, the reverse-phase sound waves are difficult to completely eliminate, and the normal-phase sound waves propagated out of the reverse-phase sound waves can be offset and interfere with the direct propagation towards the front side of the sound production components, so that the volume and the tone quality of the mural flat sound. And the utility model discloses designed new anti-sound system in mural painting flat sound box's finite space, the utility model discloses earlier become the normal phase sound wave through anti-sound board 4 with each pronunciation subassembly towards the reverse phase sound wave of back propagation, positive phase sound wave after the reverse phase is propagated towards the front side of mural painting flat sound box to rethread anti-sound space 11 and anti-sound channel 12, make normal phase sound wave after the reverse phase and each pronunciation subassembly directly towards the normal phase sound wave of front side propagation overlap to realize reinforcing tone quality and promote the purpose of sound effect, the utility model discloses an anti-sound system is very obvious to the reinforcing effect of bass part, promotes the bass audio by a wide margin.

Specifically, the flat sound main body 2 has four sides, the four sides of the flat sound main body 2 are respectively in one-to-one correspondence with the four frames and are arranged at intervals, the four sides of the flat sound main body 2 and the corresponding frames are respectively provided with a flat sound reflecting channel 12, and a flat sound reflecting space 11 is arranged between the rear surface of the flat sound main body 2 and the sound reflecting plate 4. The flat-shaped baffle space 11 and the baffle channel 12 are designed on the back of the flat-panel sound main body 2, so that the baffle system can eliminate phase difference while realizing phase opposition, and improve sound quality while reducing attenuation. The four sides of the anti-sound space 11 are respectively communicated with four anti-sound channels 12, and two adjacent anti-sound channels 12 are communicated with each other, so that the anti-sound board 4 can completely invert the anti-sound waves propagating towards all directions of the rear side and rebound and propagate out through the anti-sound channels 12. The thickness of the sound reflecting space 11 in the thickness direction is set to 0.1-1cm, and the thickness of the sound reflecting channel 12 in the thickness direction is larger than that of the sound reflecting space 11. The thickness of the anti-sound channel 12 in the thickness direction is set to 1-2cm, the width of the anti-sound channel 12 is set to 1-3cm, and the loss or attenuation of the normal phase sound wave after the phase reversal when passing through the anti-sound channel 12 is improved and reduced through the design proportion of the size.

Specifically, the soundboard 4 is a thin flat plate, the soundboard 4 has four side edges, and the four side edges of the soundboard 4 are respectively and fixedly connected to corresponding four frames of the outer frame 13 in a sealing manner; the flat sound main body 2 is suspended and fixed at the front side of the sound reflecting plate 4 through a connecting piece 24, the back surface of the flat sound main body 2 and the front surface of the sound reflecting plate 4 are arranged in parallel at intervals, a sound reflecting space 11 is formed between the back surface of the flat sound main body 2 and the front surface of the sound reflecting plate 4, and the sound reflecting space 11 is a flat space; the sound reflecting channels 12 are respectively reserved between the periphery of the flat sound main body 2 and the inner wall of the outer frame 13, and the inner sides of the sound reflecting channels 12 are respectively communicated with the sound reflecting space 11. The sound waves which are transmitted towards the back side through the resonance sound generation component 31 of the sound reflection board 4 are transmitted towards the front side of the mural flat sound box through a sound reflection system consisting of the sound reflection space 11 and the sound reflection channel 12 after being reversed in phase, so that the sound waves which are reversed in phase are overlapped with the sound waves which are directly transmitted towards the front side through the co-sounding sound generation component 31, the bass exhibition force is further enhanced, and the tone quality of a bass part is improved.

The outer sides of the sound reflecting channels 12 are respectively opened and arranged and are respectively communicated with the space at the front side of the outer frame 13, the bottoms of the sound reflecting channels 12 are respectively communicated with the sound reflecting space 11 in different directions, two adjacent sound reflecting channels 12 are mutually communicated, and a closed channel surrounding the flat sound main body 2 is formed around the flat sound main body 2.

The thickness of the flat sound main body 2 is smaller than that of the mural frame 1, the thickness of the mural frame 1 is set to be 2-5cm, the thickness of the flat sound main body 2 is set to be 1-3cm, the thickness of the sound reflecting space 11 in the thickness direction is set to be 0.1-1cm, and the thickness of the sound reflecting channel 12 in the thickness direction is larger than that of the sound reflecting space 11, so that the flat sound main body 2 can be smoothly transmitted forwards and has a wide transmission angle.

Preferably, the thickness of the outer frame 13 is less than 5cm, the thickness of the flat acoustic body 2 is less than 3cm, and the front surface of the flat acoustic body 2 is located inside the front surface of the outer frame 13. The design that the front surface of the flat sound main body 2 is convex inwards relative to the front surface of the outer frame 13 can prevent phase differences of each normal phase sound wave in the mixing and spreading processes, and further improves the reverberation effect.

Specifically, the back or the side of the flat sound main body 2 is provided with a connecting piece 24, the connecting piece 24 is fixedly connected with the wall picture frame 1, so that a sound reflecting space 11 is formed between the flat sound main body 2 and the sound reflecting plate 4, the flat sound main body 2 is fixedly installed through the connecting piece 24, the flat sound main body and the sound reflecting plate 4 keep a fixed spacing distance, and the connecting piece 24 can be selected from screws, screw rods, connecting plates, connecting blocks, components matched in insertion connection or components matched in buckling and the like.

Dull and stereotyped stereo set main part 2 includes the dull and stereotyped stereo set main part 2 of a slim dull and stereotyped shape, dull and stereotyped stereo set room 22 is set to dull and stereotyped stereo set main part 2's inner chamber, install a plurality of each pronunciation subassemblies in dull and stereotyped stereo set room 22, all install each pronunciation subassembly and control circuit in dull and stereotyped stereo set main part 2, make the volume of mural painting frame 1 can be done littleer, this design that can not restrict the selection material of mural painting frame 1, for example, use wood preparation mural painting frame 1, the mural painting frame 1 of wood preparation has artistry and the aesthetic property as the mural painting simultaneously, based on the promotion effect of wood to the sound wave, the mural painting frame 1 of wood preparation can promote whole anti-sound system's tone quality simultaneously.

More specifically, the flat plate sound main body 2 in the shape of a flat plate has a large space in the horizontal and longitudinal directions, more partitions can be separately arranged on the flat plate sound main body 2, more sound components can be installed, and different types of sound components can be installed in a combined manner to improve the sound effect, at least one sound transmission groove 23 or sound transmission hole is formed in the area corresponding to each sound component on the back surface of the flat plate sound main body 2, the flat plate sound chamber 22 is connected with the sound transmission groove 23 or the sound transmission hole, and the sound reflection space 11 is connected with the sound transmission groove 23 or the sound transmission hole. Preferably, a plurality of sound emitting units are mounted in the flat sound chamber 22, and a plurality of sound transmitting grooves 23 having a long and narrow shape are formed in a region of the back surface of the flat sound main body 2 corresponding to the sound emitting units. The sound-transmitting grooves 23 or the sound-transmitting holes are used for transmitting the reverse sound waves of each sound-generating component in the flat sound chamber 22 to the sound-reflecting space 11, the reverse sound waves of each sound-generating component are transmitted to the sound-reflecting plate 4 positioned on the front back surface of the sound-reflecting plate through the corresponding sound-transmitting grooves 23 respectively, the reverse sound waves of each sound-generating component are transmitted to the corresponding area of the sound-reflecting plate 4 respectively and are in reverse phase respectively, the mutual interference of the reverse sound waves of each sound-generating component before the reverse sound waves are transmitted to the sound-reflecting plate 4 is avoided, and the mutual interference of the normal sound waves formed after the reverse phase of the sound-reflecting plate 4 in the process of.

The above description is only for the preferred embodiment of the present invention, and for those skilled in the art, there are variations on the detailed description and the application scope according to the idea of the present invention, and the content of the description should not be construed as a limitation to the present invention.

Claims (10)

1. The utility model provides a dull and stereotyped audio amplifier of slim mural painting, includes mural painting frame (1), control circuit and backplate (5), its characterized in that: the wall painting frame comprises a wall painting frame body (1), a flat panel sound main body (2) is mounted in the middle of the wall painting frame body (1), the flat panel sound main body (2) is fixed on the wall painting frame body (1) or a backboard (5), at least one loudspeaker and/or at least one resonant sound component (31) are mounted in the flat panel sound main body (2), a wall painting decorative surface layer (25) is mounted on the front surface of the wall painting frame body (1) or the flat panel sound main body (2), and the loudspeaker and the resonant sound component (31) are electrically connected to a control circuit respectively.

2. The thin-type mural flat sound box according to claim 1, wherein: at least one plane loudspeaker box and at least one sound production subassembly box of playing together are installed to the inner chamber of dull and stereotyped stereo set main part (2), and plane loudspeaker box and the sound production subassembly box interval of playing together set up, loudspeaker include plane loudspeaker (32), install at least one plane loudspeaker (32) in a plane loudspeaker box, install at least one sound production subassembly (31) of playing together in the sound production subassembly box, install in the inner chamber of dull and stereotyped stereo set main part (2), plane loudspeaker box or the sound production subassembly box of playing together control circuit, plane loudspeaker box and the preceding sound propagation face or the sound propagation window that is provided with of sound production subassembly box of playing together.

3. The thin-type mural flat sound box according to claim 1, wherein: the resonance sounding assembly (31) comprises a resonance sounding board (311) and a vibration exciter (312) for resonance sounding with the resonance sounding board (311), the vibration exciter (312) is fixed on the back of the resonance sounding board (311), the vibration exciter (312) is electrically connected to the control circuit, and the resonance sounding board (311) is a honeycomb board or a honeycomb board with soft resonance sounding cloth compounded on the surface.

4. A thin mural flat sound box according to claim 3, wherein: the vibration exciter (312) comprises a magnetic vibration exciting assembly (33) connected to the control circuit and a plurality of arm bodies (35) arranged at the outer edge of the magnetic vibration exciting assembly (33) at intervals along the circumferential direction, the inner end of each arm body (35) is fixedly connected to the magnetic vibration exciting assembly (33), and mounting parts (37) are arranged at the middle part or the outer end part of each arm body, and each mounting part (37) is fixedly connected to the back of the resonance sounding board (311) respectively so as to realize the resonance sounding of the sounding board (311) when the magnetic vibration exciting resonance assembly (33) receives the exciting signal of the control circuit and vibrates; the mural decorative surface layer (25) is a soft decorative canvas which is installed on the front surface of the mural frame (1) or the flat sound main body (2) in a tensioning mode and used for resonance sound production.

5. The thin-type mural flat sound box according to claim 1, wherein: the loudspeaker horn comprises a plane horn (32), a plurality of groups of plane horns (32) and a plurality of groups of resonance sounding components (31) are installed in the inner cavity of the flat sound main body (2), and sound transmission grooves (23) and/or sound transmission holes are respectively formed in the back surface of the flat sound main body (2) corresponding to the areas of the plane horns (32) and the resonance sounding components (31); the wall painting frame (1) or the flat sound body (2) is provided with a control key (26) and/or an external interface (27) which are electrically connected with the control circuit, and the control circuit is provided with a wireless communication unit for wirelessly receiving control signals and/or audio data; the front surface of the flat sound main body (2) is provided with a mural decorative surface layer (25), and each plane loudspeaker (32) and each resonance sound component (31) are covered by the mural decorative surface layer (25).

6. A thin mural flat sound box according to any one of claims 1 to 5, wherein: the mural frame (1) comprises an outer frame (13) arranged at the outer edge,

a sound reflecting plate (4) is fixed in the middle of the wall painting frame (1);

the soundboard (4) is a thin flat plate, the soundboard (4) is provided with four side edges, and the four side edges of the soundboard (4) are respectively and fixedly connected with the corresponding four frames of the outer frame (13) in a sealing manner;

the flat sound main body (2) is suspended and fixed on the front side of the soundboard (4) through a connecting piece (24), the back surface of the flat sound main body (2) and the front surface of the soundboard (4) are arranged in parallel at intervals, a soundproofing space (11) is formed between the back surface of the flat sound main body (2) and the front surface of the soundboard (4), and the soundproofing space (11) is a flat space;

the anti-sound channels (12) are respectively reserved between the periphery of the flat sound body (2) and the inner wall of the outer frame (13), and the inner sides of the anti-sound channels (12) are respectively communicated with the anti-sound space (11).

7. The thin-type mural flat sound box according to claim 6, wherein: each the outside of anti-sound channel way (12) opens respectively and sets up and communicates respectively the space of the front side of outer frame (13), the bottom of each anti-sound channel way (12) communicates respectively in the position of difference anti-sound space (11), adjacent two anti-sound channel way (12) communicate each other form a closed channel that encircles dull and stereotyped stereo set main part (2) a week around dull and stereotyped stereo set main part (2).

8. The thin-type mural flat sound box according to claim 6, wherein: the thickness of the flat sound main body (2) is smaller than that of the wall picture frame (1), the thickness of the wall picture frame (1) is set to be 2-5cm, the thickness of the flat sound main body (2) is set to be 1-3cm, the thickness of the anti-sound space (11) in the thickness direction is set to be 0.1-1cm, and the thickness of the anti-sound channel (12) in the thickness direction is larger than that of the anti-sound space (11); the side or the front of the flat sound main body (2) is provided with a control key (26), an external interface (27) and a power supply interface, wherein the external interface (27) comprises a data communication interface and/or a function control interface; the front surface of the flat sound body (2) is located inside the front surface of the outer frame (13).

9. The thin-type mural flat sound box according to claim 6, wherein: the flat sound main body (2) is provided with a front panel (28) and a rear panel (29), the loudspeaker horn and the resonance sounding component (31) are fixed in the flat sound main body (2) or the front panel (28) of the flat sound main body (2), the rear panel (29) of the flat sound main body (2) is at least provided with at least one sound transmitting groove (23) or sound transmitting hole in the area corresponding to the loudspeaker horn or the resonance sounding component (31), and the front panel (28) is at least provided with a sound propagation surface or window used for propagating sound forwards at the position corresponding to the loudspeaker horn and the resonance sounding component (31); the resonance sounding assembly (31) comprises a resonance sounding board (311) and a vibration exciter (312) arranged on the back of the resonance sounding board (311), the vibration exciter (312) comprises a magnetic vibration exciting assembly (33), a plastic framework (34), a vibration chamber and arm bodies (35), the magnetic vibration exciting assembly (33) is fixedly arranged in the middle or the back of the plastic framework (34), a plurality of arm bodies (35) extend out of the periphery of the plastic framework (34), the arm bodies (35) are L-shaped, each arm body (35) surrounds in the outer circular ring area of the plastic framework (34), the outer end part of each arm body (35) is integrally formed with a mounting part (37), the mounting part (37) is fixedly arranged on the back of the resonance sounding board (311), the front of the plastic framework (34) is integrally formed or fixed with an arc-shaped drum surface (36) protruding forwards, and the interior of the arc-shaped drum surface (36) is hollow and forms a vibration chamber in the shape of a ring.

10. The thin-type mural flat sound box according to claim 6, wherein: the wall painting loudspeaker is characterized in that the back plate (5) is a thin flat plate, the back plate (5) is provided with four sides, the four sides of the back plate (5) are fixedly connected to four corresponding frames of the outer frame (13) in a sealing mode respectively, the back plate (5) is fixed to the middle or the back of the outer frame (13), a cavity of the wall painting frame (1) is separated through the back plate (5) to form a front cavity (15) on the front side of the back plate (5), a rear functional cavity (14) is formed on the front side of the back plate (5), and the flat sound main body (2) is fixed to the front surface of the back plate (5) or is fixed to the front side of the back plate (5).

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