CN213339487U - Silencing and damping device and display screen - Google Patents

Abstract

The utility model discloses an amortization damping device and display screen belongs to noise treatment technical field. This amortization damping device includes shakes piece, vibrations sensor, drive module, counter weight component and power supply module, and one side of vibrations sensor is pasted and is located a side surface of shaking the piece, and the opposite side of vibrations sensor is pasted and is equipped with counter weight component, and drive module carries out electric connection with vibrations sensor, power supply module respectively. This technical scheme, it can effectively solve current LED display screen itself and do not possess the sound of ideal and give sound insulation effect, leads to under some occasions can't improve the sound field and obtain the technical problem that better seeing and hearing was experienced.

Description

Silencing and damping device and display screen

Technical Field

The utility model relates to a noise treatment technical field, in particular to amortization damping device and display screen.

Background

In the existing LED display screen solution, there is no related art for self-absorption of sound by the screen body. From a conventional perspective, if the LED display screen has sound absorption capability, the sound emitted by the LED display screen is reduced to a certain extent, which will not affect the audiovisual experience of the user? In fact, otherwise, the source of the noise is irregular, the duration is not fixed, and the frequency of the noise is not fixed. It is not necessary for the sound absorbing system to distinguish whether noise or a broadcast sound source is absorbed, as long as it can absorb or mitigate sound waves. The sound absorbing system does not damage the tone quality of the normally played sound source and improves the tone quality. The reason is that the treble vibration frequency is high and the directivity is strong, while the bass vibration frequency is low and the directivity is weak, when the sound comes out from the loudspeaker, the sound can be reflected for many times indoors, and phenomena such as sound field standing waves, vibration echoes and the like are formed, which can affect the tone quality. In order to reduce this phenomenon, the method is usually adopted to detect the position of the sound source generating point in the sound field, calculate and test several more concentrated sound wave reflection points in the sound field at the same time, and place sound-absorbing materials or sound boxes with different sound channels at corresponding positions to improve the listening environment. In the existing solution of the LED display screen, if the reflection points occur on the LED display screen, there is no better way to achieve the effect, and the sound absorbing material can only be arranged from the rear wall surface of the fixed surface of the LED display screen, and in more practical situations, the environment where the LED display screen is located does not have ideal sound field noise reduction design conditions, firstly, most of the LED display screen application scenes are used in places with more noise, and the noise reduction difficulty is large in design, for example, when people discuss the scheme in a conference room, the sound field is damaged; secondly, LED display screen uses mobility big, does not possess noise reduction design condition, for example in links such as exhibition room, open air, stage, does not own relevant design condition, and mobility is also very big simultaneously.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides an amortization damping device and display screen, and it aims at solving current LED display screen itself and does not possess the sound of inhaling of ideal and syllable-dividing effect, leads to the technical problem that can't improve the sound field and obtain better seeing and hearing and experience under certain occasion.

In order to achieve the above object, the utility model provides an amortization damping device, amortization damping device is including shaking piece, vibrations sensor, drive module, counter weight component and power supply module, one side subsides of vibrations sensor are located a side surface of shaking piece, the opposite side subsides of vibrations sensor are equipped with counter weight component, drive module respectively with vibrations sensor power supply module carries out electric connection.

Optionally, the seismic sheet is a glass seismic sheet.

Optionally, the shock sensor is a piezoceramic wafer.

Optionally, the counterweight assembly includes a counterweight housing, and the driving module and the power module are both disposed in the counterweight housing.

Optionally, a plurality of the vibration sensors are uniformly attached to the surface of one side of the vibration sheet, and one counterweight component is attached to the other side, away from the vibration sheet, of each vibration sensor.

Optionally, the silencing and damping device further comprises a microphone array and a telescopic reversing base, the vibrating piece is arranged on the telescopic reversing base, and the driving module is electrically connected with the microphone array and the telescopic reversing base respectively.

Furthermore, for realizing the above-mentioned purpose, the utility model also provides a display screen, the display screen includes a plurality of display module assemblies, and each a amortization damping device has been installed to display module assembly's dorsal part, amortization damping device includes first vibrations piece, first vibrations sensor, drive module, first counter weight subassembly and power supply module, a side surface subsides of first vibrations piece are located correspondingly display module assembly's dorsal part, another side surface subsides of first vibrations piece are equipped with first vibration sensor, first vibrations sensor is kept away from the opposite side subsides of first vibrations piece are equipped with first counter weight subassembly, drive module respectively with first vibrations sensor power supply module carries out electric connection.

Optionally, the silencing and damping device further comprises a second vibration piece, a second vibration sensor and a second counterweight component, the second vibration piece and the first vibration piece are arranged at a relative interval, the second vibration sensor is attached to the side surface where the second vibration piece faces the first vibration piece, the second vibration sensor is far away from the other side of the second vibration piece, the second counterweight component is attached to the other side of the second vibration piece, and the driving module is further electrically connected with the second vibration sensor.

Optionally, the first seismic sheet and the second seismic sheet are both glass seismic sheets.

Optionally, the first vibration sensor and the second vibration sensor are both piezoelectric ceramic plates.

The utility model provides an amortization damping device and display screen, its amortization damping device include shake piece, vibrations sensor, drive module, counter weight component and power supply module, and one side of shaking the piece is located in one side subsides of vibrations sensor, and the opposite side subsides of vibrations sensor are equipped with counter weight component, and drive module carries out electric connection with vibrations sensor, power supply module respectively. During operation, when noise or external sound transmit the vibrations on the vibrating piece, can produce a vibrations on the vibrating piece earlier, and this vibration signal can be detected by the shock transducer and synchronous feedback to drive module, so that drive module drives this vibrating piece with the reverse vibrations of frequency according to the vibration signal synchronous drive that this feedback is come back, offset or slow down the vibrations that produce because noise or external sound transmit on the vibrating piece, and then reach amortization absorbing purpose, simultaneously, when vibrating piece replacement is other needs absorbing structure spares, it can effectively slow down the vibrations that the structure received the noise influence and produced, also can slow down the structure itself simultaneously because of the installation is bad, the abnormal sound vibrations that contact failure leads to. In addition, when its dorsal part of using the display module assembly at the display screen, it can make the screen body of display screen itself possess comparatively ideal inhale the sound and give sound insulation effect, and self just can regard as one side to inhale sound wall or sound insulation wall, even the place that the display screen used does not carry out corresponding sound field design like this, also can possess better seeing and hearing and experience. Therefore, according to the technical scheme, the technical problem that the sound field cannot be improved to obtain better audio-visual experience in certain occasions due to the fact that the existing LED display screen does not have ideal sound absorption and sound insulation effects can be effectively solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic structural view of a silencing and shock-absorbing device according to an embodiment of the present invention.

Fig. 2 is a schematic block diagram of a partial structure of a second display screen according to an embodiment of the present invention.

Detailed Description

The following describes the present invention with reference to the accompanying drawings. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features related to the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example one

As shown in fig. 1, an embodiment of the present invention provides a silencing and damping device 100, where the silencing and damping device 100 includes a vibration plate 110, a vibration sensor 120, a driving module 130, a weight component 140 and a power supply component 150, one side of the vibration sensor 120 is attached to a side surface of the vibration plate 110, the other side of the vibration sensor 120 is attached to the weight component 140, and the driving module 130 is electrically connected to the vibration sensor 120 and the power supply component 150 respectively.

In this embodiment, as shown in fig. 1, the above-mentioned vibrating piece 110 is a glass vibrating piece, the vibration sensor 120 is a piezoelectric sensor, the piezoelectric sensor is a piezoelectric ceramic piece, that is, the piezoelectric ceramic piece is mounted on the glass vibrating piece and contacts with the glass vibrating piece, and the counterweight assembly is connected and fixed with the piezoelectric ceramic piece. When noise or external sound is transmitted to the glass vibration piece, sound waves act on the glass vibration piece to enable the glass vibration piece to generate a motion state, the motion state represents the whole reciprocating motion of the glass vibration piece, meanwhile, because the piezoelectric ceramic piece is installed on the glass vibration piece, when the glass vibration piece reciprocates, the piezoelectric ceramic piece is driven to reciprocate, the counterweight component 140 is installed and connected with the piezoelectric ceramic piece, the weight of the counterweight component 140 enables the counterweight component to have larger inertia when being influenced by the motion of the glass vibration piece, and the piezoelectric ceramic piece clamped between the glass vibration piece and the counterweight component 140 is finally influenced by the inertia. Specifically, in the process of reciprocating the glass vibration piece, the reciprocating state is the tension and compression of the piezoelectric ceramic piece, different voltages can be output when the piezoelectric ceramic piece is compressed and pulled based on the characteristics of the piezoelectric ceramic piece, and a group of voltage signals containing the motion information of the glass vibration piece can be obtained by detecting the voltage. The voltage signal is the motion state of the glass vibrating piece after being acted by sound waves, and the sound-deadening and shock-absorbing device 100 is used for absorbing or changing the sound waves after being acted on the glass vibrating piece. Based on the idea, under ideal conditions, the glass vibration sheet can be completely absorbed as long as a motion with the same size and the opposite direction to the sound wave is generated on the glass vibration sheet. However, in practical situations, it is difficult to realize that firstly, the sound waves received by the glass are definitely not only one group, but also complex waveforms with superposed various noises, secondly, the directions of the noises are not consistent, and the noises are necessarily noises transmitted in multiple directions, and furthermore, the system error generated by the glass vibration sheet cannot be ignored. Under various practical conditions, it is determined that complete noise attenuation is impossible, and only the noise with the largest influence can be taken for mitigation. That is, the noise-canceling and vibration-damping device 100 generates a "muffling sound" having a frequency equal to the noise frequency and a vibration amplitude opposite to the noise frequency, and performs noise canceling by a "muffling sound" method. To generate the "anti-sound", the executing element to be applied is the glass vibration sheet, the vibration of the glass vibration sheet can amplify the loudness of the "anti-sound", and the executing element for actively driving the glass vibration sheet to vibrate is the piezoelectric ceramic sheet. The driving module 130 receives the voltage signal generated by the piezoelectric ceramic plate, the voltage signal output by the piezoelectric ceramic plate is a composite signal, which includes the voltage signal generated based on the glass movement, and also includes the voltage signal generated by the sound wave conducted to the piezoelectric ceramic plate and the voltage signal under the influence of other waveforms. The driving module 130 processes the signal of the piezoelectric ceramic plate, and the purpose of the processing is to output a motion which is approximately equal to the sound wave vibration in magnitude and opposite in direction, that is, to synchronously drive the glass vibration plate to vibrate in the same frequency and opposite directions, so as to absorb and cancel the transmitted sound wave.

As shown in fig. 1, the power module 150 and the driving module 130 in this embodiment may be separately installed at the installation position, or may be installed in the counterweight assembly 140 as a part of the counterweight according to actual needs, that is, the counterweight assembly 140 includes a counterweight housing, and the driving module 130 and the power module 140 are both embedded in the counterweight housing. In addition, as shown in fig. 1, in order to improve the detection accuracy, a plurality of vibration sensors 120 (specifically, two vibration sensors 120 are provided in the embodiment) may be uniformly attached to one side surface of the seismic plate 110, and a counterweight component 140 is attached to the other side of each vibration sensor 120 away from the seismic plate 110. In order to realize sound source discrimination of noise and ensure that the vibrating piece 110 can work towards the direction with the largest noise as much as possible, the silencing and damping device 100 further comprises a microphone array 160 and a telescopic reversing base 170, the vibrating piece 110 is arranged on the telescopic reversing base 170, and the driving module 130 is electrically connected with the microphone array 160 and the telescopic reversing base 170 respectively. That is, after the sound source direction is identified by the microphone array 160, the telescopic steering base 170 is controlled to change the orientation of the seismic patch 110, so that the seismic patch 110 can work in the direction with the largest noise as much as possible.

Example two

As shown in fig. 2, the second embodiment of the present invention further provides a display screen, the display screen includes a plurality of display module assemblies 210, and a silencing and damping device has been installed on the backside of each display module assembly 210, the silencing and damping device includes first vibration sheet 220, first vibration sensor 230, driving module 240, first counterweight component 250 and power supply module 260, the backside of corresponding display module assembly 210 is located on a side surface of first vibration sheet 220, first vibration sensor 230 is located on the other side surface of first vibration sheet 220, first counterweight component 250 is located on the other side surface of first vibration sensor 230 away from first vibration sheet 220, driving module 240 carries out electric connection with first vibration sensor 230, power supply module 260 respectively.

It can be seen that, in this embodiment, the noise reduction and vibration reduction device is set to be the size of the bottom shell of the module or the bottom shell of the box, and is placed on the back side of the corresponding display module 210, so that the front side of the screen body of the display screen has the sound absorption and vibration reduction functions, and meanwhile, in order to make the back side of the screen body of the display screen have the sound insulation and vibration reduction functions, as shown in fig. 2, the noise reduction and vibration reduction device further includes a second vibration sheet 270, a second vibration sensor 280 and a second counterweight component 290, the second vibration sheet 270 is relatively spaced from the first vibration sheet 220, the second vibration sensor 280 is attached to a side surface of the second vibration sheet 270 facing the first vibration sheet 220, the other side of the second vibration sensor 280 far from the second vibration sheet 270 is attached with the second counterweight component 290, and the driving module 240 is further electrically connected with the second vibration sensor 280.

Preferably, the first vibration plate 220 and the second vibration plate 270 are glass vibration plates, and the first vibration sensor 230 and the second vibration sensor 230 are piezoelectric sensors.

The amortization damping device and display screen that this embodiment provided, its amortization damping device include shake piece, vibrations sensor, drive module, counter weight subassembly and power supply module, and one side surface of locating the piece that shakes is pasted to one side of vibrations sensor, and the opposite side subsides of vibrations sensor are equipped with counter weight subassembly, and drive module carries out electric connection with vibrations sensor, power supply module respectively. During operation, when noise or external sound transmit the vibrations on the vibrating piece, can produce a vibrations on the vibrating piece earlier, and this vibration signal can be detected by the shock transducer and synchronous feedback to drive module, so that drive module drives this vibrating piece with the reverse vibrations of frequency according to the vibration signal synchronous drive that this feedback is come back, offset or slow down the vibrations that produce because noise or external sound transmit on the vibrating piece, and then reach amortization absorbing purpose, simultaneously, when vibrating piece replacement is other needs absorbing structure spares, it can effectively slow down the vibrations that the structure received the noise influence and produced, also can slow down the structure itself simultaneously because of the installation is bad, the abnormal sound vibrations that contact failure leads to. In addition, when its dorsal part of using the display module assembly at the display screen, it can make the screen body of display screen itself possess comparatively ideal inhale the sound and give sound insulation effect, and self just can regard as one side to inhale sound wall or sound insulation wall, even the place that the display screen used does not carry out corresponding sound field design like this, also can possess better seeing and hearing and experience. Therefore, according to the technical scheme, the technical problem that the sound field cannot be improved to obtain better audio-visual experience in certain occasions due to the fact that the existing LED display screen does not have ideal sound absorption and sound insulation effects can be effectively solved.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.

Claims (10)

1. The utility model provides a amortization damping device, its characterized in that, amortization damping device includes shakes piece, vibrations sensor, drive module, counter weight subassembly and power supply module, one side subsides of vibrations sensor are located a side surface of shaking the piece, the opposite side subsides of vibrations sensor are equipped with counter weight subassembly, drive module respectively with vibrations sensor power supply module carries out electric connection.

2. The sound attenuation and shock absorption device of claim 1, wherein the shock absorber is a glass shock absorber.

3. The noise dampening device of claim 1, wherein the shock sensor is a piezoelectric sensor.

4. The noise-abatement apparatus of claim 1, wherein the weight assembly comprises a weight housing, and the drive module and the power module are both embedded in the weight housing.

5. The noise reduction and shock absorption device as claimed in claim 1, wherein a plurality of said vibration sensors are uniformly attached to one side surface of said vibration plate, and a weight member is attached to the other side of each said vibration sensor away from said vibration plate.

6. The noise reduction and vibration reduction device according to any one of claims 1 to 5, further comprising a microphone array and a telescopic direction-changing base, wherein the seismic sheet is disposed on the telescopic direction-changing base, and the driving module is electrically connected to the microphone array and the telescopic direction-changing base respectively.

7. The utility model provides a display screen, its characterized in that, the display screen includes a plurality of display module assemblies, and each a amortization damping device has been installed to display module assembly's dorsal part, amortization damping device includes first vibrations piece, first vibrations sensor, drive module, first counter weight subassembly and power supply module, a side surface subsides of first vibrations piece are located correspondingly display module assembly's dorsal part, another side surface subsides of first vibrations piece are equipped with first vibrations sensor, first vibrations sensor is kept away from the opposite side subsides of first vibrations piece are equipped with first counter weight subassembly, drive module respectively with first vibrations sensor power supply module carries out electric connection.

8. The display screen of claim 7, wherein the noise reduction and vibration reduction device further comprises a second vibration sheet, a second vibration sensor and a second counterweight component, the second vibration sheet and the first vibration sheet are arranged at an interval, the second vibration sensor is attached to one side surface of the second vibration sheet facing the first vibration sheet, the second counterweight component is attached to the other side, away from the second vibration sheet, of the second vibration sensor, and the driving module is further electrically connected with the second vibration sensor.

9. The display screen of claim 8, wherein the first vibrating piece and the second vibrating piece are glass vibrating pieces.

10. The display screen of claim 8, wherein the first shock sensor and the second shock sensor are both piezoelectric sensors.

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