CN115119116A

CN115119116A - Display device

Info

Publication number: CN115119116A
Application number: CN202110285185.5A
Authority: CN
Inventors: 王天华; 刘少伟; 李奎宝; 周辉
Original assignee: Hisense Visual Technology Co Ltd
Current assignee: Hisense Visual Technology Co Ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2022-09-27

Abstract

The invention provides a display device, which comprises a display structure, a sounding substrate, a vibration unit and a vibration transmission vibrator, wherein the sounding substrate is arranged on the display structure; the display structure is used for displaying image information; the sounding substrate is attached to the rear side of the display structure; the exciter is connected to the rear side surface of the sounding substrate and is used for driving the sounding substrate to emit middle and high sound; the vibration unit is arranged on the rear side of the sounding substrate and is arranged at an interval with the sounding substrate; the vibration unit is fixed on an external hanging rack or a wall and can generate vibration; the vibration transmission vibrator is connected between the sounding substrate and the vibration unit to transmit the vibration of the vibration unit to the sounding substrate so that the sounding substrate vibrates to sound. The exciter drives the sounding substrate to vibrate to emit medium-high sound, and the vibration unit vibrates to emit low sound. The vibration unit is fixedly connected to the hanging rack or the wall, the sound production substrate is driven to vibrate through the vibration transmission vibrator, the vibration of the vibration unit and the vibration of the sound production substrate are superposed, bass is strengthened, and the bass effect of the display device is improved.

Description

Display device

Technical Field

The invention relates to the technical field of operation and display, in particular to a display device.

Background

With the continuous development of electronic technology and the continuous improvement of customer demands, display devices are continuously developing towards large size, light weight and thin weight, and the display devices are lighter and thinner as a whole and also need to be internally provided with sound generating devices such as speakers. Due to the limitation of the internal space of the display device, the installation position space reserved for the loudspeaker is small, so that the loudspeaker installed in the display device can only meet the common playing function generally, the sound effect of more multi-channel sound cannot be realized, and the playing performance of the loudspeaker is poor.

In some technologies, an electronic device sets an electromagnetic exciter behind a picture displayed on a display screen through a "flat panel sound production technology", and the display screen produces sound through bending waves generated by modal resonance under the action of the electromagnetic exciter. I.e. the display screen in the electronic device can be used both for display and for sound production instead of a loudspeaker. Therefore, the electronic equipment does not need to be provided with a mounting position for the loudspeaker, so that the electronic equipment is designed to be thinner and lighter.

However, when the display device is hung on a wall, a wide and thin "air cavity" is formed on the back of the screen due to the proximity of the back side of the display device to the wall. Since the air chamber is thin (20mm or less), its equivalent acoustic compliance is small (equivalent to having a stiff spring pressing against the screen). Due to the acoustic compliance, when the electromagnetic exciter drives the display screen to vibrate, the vibration amplitude of the vibration screen is suppressed, especially in a low frequency band, so that bass emitted by the vibration screen is damaged.

Disclosure of Invention

The invention aims to provide a display device, which is used for enhancing the vibration of the display device and improving the bass effect of the display device.

In order to solve the technical problems, the invention adopts the following technical scheme:

according to one aspect of the present invention, there is provided a display device comprising a display structure, a sound-emitting substrate, an exciter, a vibration unit, and a vibration-transmitting vibrator; the display structure is used for displaying image information; the sounding substrate is positioned at the rear side of the display structure; the exciter is connected to the rear side surface of the sounding substrate and is used for driving the sounding substrate to emit middle and high sound; the vibration unit is used for emitting bass; the vibration unit is arranged on the rear side of the sounding substrate and is arranged at an interval with the sounding substrate; the vibration unit is fixed on an external hanging rack or a wall and can generate vibration; the vibration transmission vibrator is connected between the sounding substrate and the vibration unit, so that the vibration of the vibration unit is transmitted to the sounding substrate, and the sounding substrate vibrates to sound.

In some embodiments, the display device further includes a microphone disposed at a rear side of the sound emission substrate, the microphone being formed with a sound expansion chamber having an inner diameter gradually enlarged; the public address chamber link up the both ends of megaphone, the one end that the diameter is big in public address chamber is followed the trailing flank orientation of sound production base plate the outside setting of sound production base plate.

In some embodiments, the microphone is provided in plurality and is provided corresponding to the exciter and the vibration unit, respectively.

In some embodiments, the vibration unit includes a connecting member fixed to an external hanger or a wall, and a speaker connected to the connecting member for driving the connecting member to vibrate; the vibration transmission vibrator is connected between the sounding substrate and the connecting piece.

In some embodiments, the connecting member includes a fixing portion and a vibrating portion flexibly connected to a side of the fixing portion facing the sound substrate; the fixed part and the vibrating part are enclosed to form a box-type structure with a hollow interior; the loudspeaker is connected to the fixed part and can drive the vibration part to vibrate; the vibration transmission vibrator is connected to the vibration part.

In some embodiments, the speaker is embedded in the connecting piece, and the speaker penetrates through the fixing part; the loudspeaker is hermetically connected with the fixing part, and a closed space is formed between the inside of the connecting piece and the loudspeaker; one end of the loudspeaker is provided with a vibrating membrane used for vibrating and sounding, and the two sides of the vibrating membrane are respectively the inner space of the connecting piece and the outer space of the connecting piece.

In some embodiments, the speaker includes a support, a magnet disposed within the support, a frame surrounding a periphery of the support, and the diaphragm; one end of the basin stand is connected with the bracket; the vibrating membrane is positioned in the enclosing range of the basin stand and connected between one end of the basin stand, which is far away from the support, and the support; the basin frame is embedded in the connecting piece, the outer side surface of the basin frame is hermetically connected with the fixing part, and a closed space is formed between the connecting piece and the loudspeaker.

In some embodiments, the diaphragm is located at an end of the support facing away from the vibrating portion.

In some embodiments, the vibration part is provided in plurality on a side of the fixing part facing the sound substrate, and the sound substrate is correspondingly provided with the plurality of vibration transmission vibrators.

In some embodiments, one end of the vibration transmission vibrator is fixedly connected to the sound production substrate, and the other end of the vibration transmission vibrator is magnetically adsorbed on the vibration part.

In some embodiments, a limiting groove is arranged on the vibration part corresponding to the vibration transmission vibrator, and the vibration transmission vibrator extends into the limiting groove and is connected with the vibration part.

According to the technical scheme, the invention has at least the following advantages and positive effects:

in the invention, the exciter drives the sounding substrate to vibrate to send out medium and high sound, and the vibration unit vibrates to send out low sound. Vibration unit fixed connection is on stores pylon or wall, directly drives the vibration of sound production base plate through passing the oscillator that shakes, and the effort that the vibration unit vibration produced can not be used for driving the relative sound production base plate motion of vibration unit backward to make more being used for of the effort that the vibration unit vibration produced drive the vibration of sound production base plate, with the loss that reduces the energy, the reinforcing vibration, the vibration of vibration unit with take place the vibration stack of base plate, and strengthen the bass, improve display device's bass effect.

Drawings

Fig. 1 is a schematic structural view of a display device having an actuator.

Fig. 2 is a schematic view of another display device having an actuator.

Fig. 3 is a schematic cross-sectional view of the display device shown in fig. 1.

Fig. 4 is a schematic view of the display device of fig. 1 hanging on a wall panel.

Fig. 5 is a schematic cross-sectional view of a display device according to a first embodiment of the invention.

Fig. 6 is an enlarged view of fig. 5 at a.

Fig. 7 is a schematic cross-sectional view of a vibrating unit in a first embodiment of a display device according to the present invention.

Fig. 8 is a schematic cross-sectional view of a speaker according to a first embodiment of the display device of the present invention.

FIG. 9 is a side view of a display device according to an embodiment of the present invention.

FIG. 10 is a schematic diagram of a back side structure of a display device according to an embodiment of the invention.

Fig. 11 is a schematic structural diagram of a multi-channel first embodiment of the display apparatus of the present invention.

Fig. 12 is a schematic structural diagram of a multi-channel second embodiment of the display apparatus of the present invention.

FIG. 13 is a schematic diagram of a back side structure of another embodiment of a display device according to the invention.

Fig. 14 is a schematic configuration diagram of a multi-channel third embodiment of the display apparatus of the present invention.

FIG. 15 is a side view of a portion of another embodiment of a display device according to the present invention.

Fig. 16 is a schematic structural view of a hanger in a display device according to the present invention.

Fig. 17 is a schematic structural diagram of a microphone according to an embodiment of the display device of the present invention.

Fig. 18 is a schematic cross-sectional view of a display device according to a second embodiment of the invention.

Fig. 19 is an enlarged view at B in fig. 18.

Fig. 20 is a schematic view of a vibration unit in a second embodiment of the display device of the present invention.

Fig. 21 is a schematic view of a speaker in a second embodiment of the display device of the present invention.

Fig. 22 is a schematic view showing the structure of the front surface of the connecting member in the second embodiment of the display device of the present invention.

The reference numerals are explained below:

100. a display screen; 110. a display structure; 120. a sound substrate; 121. a groove; 200. an exciter; 300. a hanger; 310. mounting grooves; 400. a wall; 500. an air chamber; 600. a vibration unit; 610. a connecting member; 611. a fixed part; 612. a vibrating section; 613. a limiting groove; 620. a speaker; 621. a support; 622. a magnet; 623. a basin stand; 624. a vibrating membrane; 625. a limiting groove; 700. a vibration transmission vibrator; 800. a loudspeaker; 810. a sound amplifying cavity.

Detailed Description

Exemplary embodiments that embody features and advantages of the invention are described in detail below in the specification. It is to be understood that the invention is capable of other embodiments and that various changes in form and details may be made therein without departing from the scope of the invention and the description and drawings are to be regarded as illustrative in nature and not as restrictive.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

For convenience of description and understanding, a direction of the display device facing a user is taken as a front side, and a direction of the display device facing away from the user is taken as a rear side.

Fig. 1 is a schematic structural view of a display device having an actuator. Fig. 2 is a schematic view of another display device having an actuator. Fig. 3 is a schematic cross-sectional view of the display device shown in fig. 1.

Referring to fig. 1 to 3, in fig. 1, the display device may be a liquid crystal display device or an OLED display device. The display device in fig. 2 is a laser display device. The plurality of actuators 200 provided on the rear side of the display screen 100 of the display device may individually actuate the entire display screen 100 to emit sound. The display screen in fig. 1 is an OLED screen or a liquid crystal screen, and the display screen in fig. 2 is a projection screen. The display screen 100 includes a display structure 110 and a sound substrate 120, wherein the display structure 110 is used for displaying image information; the acoustic substrate 120 emits sound by bending waves emitted by modal resonance under the action of the exciter 200. Namely, the display device can be used for both display and vibration sound generation. Therefore, the electronic equipment does not need to be provided with a mounting position for the loudspeaker, and a user does not need to be externally connected with the loudspeaker, so that the electronic equipment is designed to be thinner and lighter.

Referring to fig. 4, the display apparatus is hung on a wall 400 by a hanger 300, a rear side of a display screen 100 of the display apparatus is closely spaced from the wall 400, and an air chamber 500 having a small gap is formed between the rear side of the display screen 100 and the wall 400. The air cavity 500 is thin (20mm or less) and has a low equivalent compliance (equivalent to a stiff spring pressing against the display screen 100). Due to the acoustic compliance, when the exciter 200 drives the display screen 100 to vibrate, the vibration amplitude of the display screen 100 is suppressed, and the sound emitted from the vibration screen is damaged. In particular, since the amplitude of the vibration of the bass sound is large, the amplitude of the vibration of the display screen 100 is suppressed to a large extent, so that the damage of the bass sound is more serious. The actuator 200 may be an electromagnetic actuator, a ceramic actuator, a piezoelectric actuator, an electrodynamic actuator, or the like.

Meanwhile, after the display device is hung on the wall 400 through the hanger 300, when the exciter 200 drives the display screen 100 to vibrate, because the vibration of the display screen 100 is suppressed, more force of the exciter 200 on the display screen 100 is used for driving the exciter 200 to move relative to the display screen 100, so that energy is lost, and the display screen 100 is influenced to vibrate and generate sound.

Fig. 5 is a schematic cross-sectional view of a display device according to a first embodiment of the invention. Fig. 6 is an enlarged view at a in fig. 5.

Referring to fig. 5 and 6, the present embodiment provides a display device including a display screen 100, a vibration unit 600 disposed at a rear side of the display screen 100, and a vibration transmitting vibrator 700 connected between the vibration unit 600 and the display screen 100. The display screen 100 is hung on the wall 400 through the hanger 300, and the vibration unit 600 is fixedly connected to the hanger 300 or the wall 400. The vibration unit 600 can generate vibration, and the vibration of the vibration unit 600 is directly transmitted to the display screen 100 through the vibration transmission vibrator 700, so as to drive the display screen 100 to vibrate and generate sound.

The display screen 100 includes a display structure 110 for displaying image information, and a sound substrate 120 located at a rear side of the display structure 110. In this embodiment, the sound substrate 120 is attached to the rear side of the display structure. In some embodiments, there is a space between the sound generating substrate 120 and the display structure 110, or the sound generating substrate 120 and the display structure 110 are connected by a connector.

In this embodiment, the sound substrate 120 is a honeycomb panel, and the honeycomb panel can vibrate to generate sound. The honeycomb panel has the honeycomb layer of a plurality of honeycomb holes, this honeycomb hole rigidity on the equidirectional is different, and the same reason, this honeycomb hole is also different at the ascending cisality (being flexible) of equidirectional not, therefore this sound production base plate is after taking place to vibrate, the in-process of vibration conduction in the sound production base plate, the degree of attenuation on the equidirectional is different for vibration amplitude on the different directions is different (also make this sound production base plate have anisotropic mechanical response characteristic), thereby the sound size that this sound production base plate produced on the equidirectional not is different.

The vibration unit 600 is disposed on the rear side of the sounding substrate 120 and spaced apart from the sounding substrate 120, and the vibration transmission vibrator 700 is connected between the vibration unit 600 and the sounding substrate 120. Vibration unit 600 fixed connection is on stores pylon 300 or wall 400, directly drives sounding substrate 120 vibration through pass vibrator 700 that shakes, and the effort that vibration unit 600 vibration produced can not be used for driving the relative sounding substrate 120 motion of vibration unit 600 to make more being used for of the effort that vibration unit 600 vibration produced drive sounding substrate 120 vibration, with the loss that reduces the energy, reinforcing display device's vibration, reinforcing display device's sound production.

The vibration unit 600 includes a connection member 610 fixed to the hanger 300 or the wall 400, and a speaker 620 connected to the connection member 610; the vibration transmitting vibrator 700 is connected to the speaker 620 to transmit the vibration of the speaker 620 to the sound emission substrate 120. The vibration transducer 700 is directly connected to the speaker 620, and directly transmits the vibration of the speaker 620 to the sound emission substrate 120.

Speaker 620 self can vibrate the sound production, and speaker 620 can drive sound production base plate 120 vibration sound production, and the stack of the sound production of speaker 620 and sound production base plate 120 has strengthened display device's sound production.

In this embodiment, the speaker 620 is not directly fixed on the sound substrate 120, but the sound generator 620 is disposed in the gap between the sound substrate 120 and the hanger 300 and fixed on the hanger 300, so that the display device can generate sound using the speaker 620. The display device is enabled to emit sound by sound emission of the speaker 620. After the vibration of the speaker 620 is transmitted to the sound production substrate 120, the sound production substrate 120 is driven to vibrate and produce sound, and the sound production of the speaker 620 and the sound production of the sound production substrate 120 are overlapped, so that the sound production effect of the display device is enhanced.

Fig. 7 is a schematic cross-sectional view of a vibration unit 600 in a first embodiment of the display device of the present invention. Fig. 8 is a schematic cross-sectional view of a speaker in a first embodiment of the display device according to the present invention.

Referring to fig. 6 to 8, a specific structure of the speaker 620 refers to a structure of the speaker 620 in the related art. Specifically, the speaker 620 includes a support 621, a magnet 622 disposed in the support 621, a frame 623 surrounding the outer periphery of the support 621, and a diaphragm 624; one end of the basin stand 623 is connected with the bracket 621; the diaphragm 624 is located within the enclosure of the holder 623 and is connected between the holder 621 and an end of the holder 623 opposite the holder 621. The frame 623 is formed with a through hole penetrating the wall thickness thereof, the diaphragm 624 is used for vibration and sound production, and the vibration of the diaphragm 624 drives the whole speaker 620 to vibrate.

The end of the support 621 facing away from the diaphragm 624 is notched to form a retaining groove 625. In this embodiment, the notch does not penetrate the magnet 622 in the axial direction of the holder 621, and the vibration transducer 700 is connected to the holder 621. In some embodiments, the notch extends through the magnet 622 along the axial direction of the support 621, and the vibration transducer 700 is connected to the magnet 622.

The connecting member 610 is a box-type structure with a hollow interior; the speaker 620 is embedded in the connector 610 and penetrates through both ends of the connector 610; the speaker 620 is hermetically coupled with the connector 610, and a closed space is formed between the inside of the connector 610 and the speaker 620; the two sides of the diaphragm 624 of the speaker 620 are respectively the inner space of the connector 610 and the outer space of the connector 610; the vibration transmitting vibrator 700 is coupled to an end of the speaker 620 facing away from the diaphragm 624 such that a side of the diaphragm 624 forms a closed space, and vibration of the diaphragm 624 can be enhanced when it vibrates.

In this embodiment, the connecting member 610 is a box-type structure with a hollow interior; the frame 623 is inserted into the connector 610, and the outer side surface of the frame 623 is hermetically connected to the two spaced sidewalls of the connector 610, thereby forming a closed space between the connector 610 and the speaker 620, so that both sides of the diaphragm 624 respectively contact the inner space of the connector 610 and the outer space of the connector 610.

In this embodiment, the speaker 620 is embedded in the connector 610, and a closed space is formed between the speaker 620 and the connector 610. When the speaker 620 vibrates in free space, the low frequency sound waves emitted from the front and back sides of the diaphragm 624 cancel each other out, thereby forming an acoustic short circuit. After the speaker 620 is installed in the connector 610, two sides of the diaphragm 624 respectively contact the enclosed space inside the connector 610 and the external space of the connector 610, and the sound emitted from the back of the diaphragm 624 is bound in the connector 610, thereby eliminating the phenomenon of acoustic short circuit and enhancing the bass effect. Meanwhile, the momentum of the driving diaphragm 624 is equal to the momentum of the driving vibrator 700 according to the principle of conservation of momentum and the transmissibility of force. The diaphragm 624 and the frame 623 are simultaneously "expanded" or simultaneously "contracted" in view of the position where the vibration unit 600 is at rest as the origin. This determines that the vibration of the sound substrate 120 and the vibration film 624 are in the same phase, that is, the bass sounds from the sound substrate 120 and the vibration film 624 are superimposed to enhance the overall bass effect.

In this embodiment, the connecting member 610 is fixed to the hanger 300 by a fastening member such as a bolt or a screw, and a space is provided on the hanger 300 corresponding to the speaker 620, so that a gap is formed between the vibrating die 621 of the speaker 620 and the hanger 300, and the vibrating diaphragm of the speaker 620 vibrates.

Referring to fig. 5 and 6 again, in the present embodiment, the vibration transmission vibrator 700 is made of a ferrous material, one end of the vibration transmission vibrator 700 is fixedly connected to the sound emitting substrate 120, and the other end is magnetically adsorbed on the speaker 620. The vibration transmission vibrator 700 is connected to the speaker 620 in a magnetic adsorption manner, when the display device is hung on the wall 400, the vibration unit 600 is installed at a corresponding position on the hanger 300 or the wall 400, then the display screen 100 is installed on the hanger 300 or the wall 400, and the vibration transmission vibrator 700 and the vibration unit 600 are automatically connected to the speaker 620 in a magnetic adsorption manner, so that the vibration transmission vibrator 700 and the vibration unit 600 can be quickly installed.

One end of the vibration transducer 700 facing the vibration unit 600 extends into the limiting groove 625 of the speaker 620 and is connected to the bracket 621 or the magnet 622. The setting of spacing groove 625, when not only effectual having avoided vibration unit 600, pass the dislocation of oscillator 700 and speaker 620 that shakes to guaranteed the vibration transmission between oscillator 700 and the speaker 620 that shakes, the effectual stability of guaranteeing display screen 100 phonation. Meanwhile, the matching of the vibration transmission vibrator 700 and the limiting groove 625 facilitates the alignment of the vibration transmission vibrator 700 and the limiting groove 625, so that when the display screen 100 is installed, the vibration unit 600 is aligned and matched with the display screen 100, and the installation speed and accuracy are improved.

In some embodiments, the vibration transmitting element 700 is a magnet, and the polarity of the end of the vibration transmitting element 700 facing the speaker 620 is opposite to the polarity of the magnet.

A buffer layer made of a buffer material is disposed between the vibration transmitting vibrator 700 and the vibration unit 600. In this embodiment, a buffer layer is provided between the vibration transducer 700 and the speaker 620. When the vibration unit 600 vibrates, the setting of buffer layer can effectually avoid the striking that produces between the vibration unit 600 and the biography oscillator 700 to the effectual interference of avoiding the sound that the striking produced, and can play the striking damage or the wearing and tearing of avoiding vibration unit 600 and biography oscillator 700.

Referring to fig. 9, the sound substrate 120 is provided with a groove 121 corresponding to the speaker 620, and the vibration transmission vibrator 700 is connected in the groove 121. The groove 121 enables the display screen 100 to be closer to the wall 400 as a whole, so that the installation of the display device occupies less space. The groove 121 is formed to increase the thickness of the sound substrate 120 in the region outside the groove 121, so that the sound substrate 120 vibrates more strongly.

Referring to fig. 5 and 10 again, in the present embodiment, the vibration unit 600 is used to drive the sounding substrate 120 to generate bass. The display device further includes an exciter 200 disposed at the rear side of the sounding substrate 120 and attached to the sounding substrate 120; the exciter 200 is used to drive the sounding substrate 120 to emit a medium-high sound. The exciter 200 is disposed above the vibration unit 600, and two vibration units are symmetrically disposed in the width direction of the display device, the vibration unit 600 is located in the middle of the width direction of the sound substrate 120, the exciter 200 and the vibration unit 600 are arranged in a staggered manner, so that the space on the back of the sound substrate 120 is fully utilized, the two exciters 200 are symmetrically disposed in the left-right direction, and the vibration unit 600 is disposed in the middle of the sound substrate 120, so that the sound transmitted to the front of the display device is balanced.

Referring to fig. 11, in the present embodiment, the display device is provided with four exciters S1 to S4, each of which plays an audio of one channel correspondingly. Exciter S1 and exciter S2 correspond to the left and right channels, respectively, and exciter S3 and exciter S4 are sky sounds left and right, respectively. Wherein the vibration unit 600 corresponds to a heavy bass.

Referring to fig. 12, in the present embodiment, the display device is provided with four drivers T1 to T6. The exciter T1 and the exciter T2 correspond to the left and right channels, respectively, the exciter T3 and the exciter T4 are sky sounds left and right, respectively, and the exciter T5 and the exciter T6 are surround sounds left and right, respectively. Wherein the vibration unit 600 corresponds to a heavy bass.

Referring to fig. 13, the display device is not provided with the exciter 200, and the vibration unit 600 is provided in plurality on the rear side of the sound substrate 120, and the number of the vibration transmitting vibrators 700 is provided corresponding to the vibration unit 600. In this embodiment, two vibration units 600 are provided, and the two vibration units 600 are symmetrically provided in the vertical direction. Two vibration units 600 are used to emit bass and alt, respectively, or both vibration units 600 can emit alt. The two vibration units 600 are provided, and the exciter 200 does not need to be provided on the display device. Compared with the combination of one vibration unit 600 and two exciters 200, the arrangement of two vibration units 600 reduces the number of sound generating units and saves the cost.

Referring to fig. 14, in the present embodiment, the display device is not provided with the exciter 200, and the vibration unit 600 is provided with five vibration units Y1 to Y5 on the rear side of the sound emitting substrate 120. The vibration unit Y1 and the vibration unit Y2 correspond to the left channel and the right channel respectively, the vibration unit Y3 and the vibration unit Y4 are the left channel and the right channel of sky sound respectively, and the vibration unit Y5 and the vibration unit Y6 are the left channel and the right channel of surrounding sound respectively. The vibration unit Y7 corresponds to a heavy bass.

FIG. 15 is a side view of a portion of another embodiment of a display device according to the present invention. Fig. 16 is a schematic structural view of a hanger 300 in a display device according to the present invention. Fig. 17 is a schematic structural diagram of a microphone 800 according to an embodiment of the display device of the present invention.

Referring to fig. 15 to 17, the display device further includes a microphone 800 disposed at a rear side of the sound emission substrate 120, the microphone 800 having a circumferential wall in a ring shape, the circumferential wall of the microphone 800 gradually expanding outward in a radial direction thereof. So that the circumferential wall of the loudspeaker 800 encloses a sound expansion chamber 810 with an inner diameter gradually enlarged; the amplification chamber 810 extends through both ends of the microphone 800.

The small-diameter end of the sound expansion chamber 810 is disposed corresponding to the exciter 200 or the vibration unit 600, and the large-diameter end of the sound expansion chamber 810 is disposed toward the outside of the sounding substrate 120 along the rear side of the sounding substrate 120 to expand the sound outward. The microphone 800 is provided in plurality and along the edge of the sounding substrate 120 so that the sound of the display device is propagated in the upward and left and right directions. A plurality of microphones 800 are provided corresponding to the exciter 200 and the vibration unit 600, respectively.

In this embodiment, the edge of the rear side of the sound substrate 120 is provided with an inclined surface corresponding to the microphone 800, and the inclined surface provides a space for the microphone 800, so that the microphone 800 can be conveniently mounted between the sound substrate 120 and the hanger 300.

Loudspeaker 800 installs on stores pylon 300, and stores pylon 300's the one side formation towards sound production base plate 120 is provided with mounting groove 310, and loudspeaker 800 installs in mounting groove 310, and the setting of mounting groove 310 provides the space for loudspeaker 800's setting to can be convenient for loudspeaker 800 counterpoint on stores pylon 300, so that loudspeaker 800's counterpoint installation. A flexible ethylene-vinyl acetate copolymer (EVA for short) is disposed in the mounting groove 310, and the microphone 800 is connected to the EVA, so that the microphone 800 is mounted on the hanger 300. The hanger 300 is further provided with a wire arrangement groove for routing the microphone 800 and the vibration unit 600 so as to arrange and assemble various wires, thereby facilitating the connection of the wires.

Fig. 18 is a schematic cross-sectional view of a display device according to a second embodiment of the invention. Fig. 19 is an enlarged view at B in fig. 18.

Referring to fig. 18 and 19, the present embodiment provides a display device including a display screen 100, a vibration unit 600 disposed at a rear side of the display screen 100, and a vibration transmitting vibrator 700 connected between the vibration unit 600 and the display screen 100. The display screen 100 is hung on the wall 400 through the hanger 300, and the vibration unit 600 is fixedly connected to the hanger 300 or the wall 400. The vibration unit 600 can generate vibration, and the vibration of the vibration unit 600 is directly transmitted to the display screen 100 through the vibration transmission vibrator 700, so as to drive the display screen 100 to vibrate and generate sound.

The display screen 100 includes a display structure 110 for displaying image information, and a sound substrate 120 attached to a rear side of the display structure 110. The sound substrate 120 is a honeycomb panel, and the honeycomb panel can vibrate to generate sound.

The vibration unit 600 is disposed on the rear side of the sounding substrate 120 and spaced apart from the sounding substrate 120, and the vibration transmission vibrator 700 is connected between the vibration unit 600 and the sounding substrate 120. Vibration unit 600 fixed connection is on stores pylon 300 or wall 400, directly drives sound production base plate 120 vibration through biography oscillator 700, and the effort that vibration unit 600 vibration produced can not be used for driving vibration unit 600 relative sound production base plate 120 motion backward to make more being used for of effort that vibration unit 600 vibration produced drive sound production base plate 120 vibration, with the loss that reduces the energy, reinforcing display device's vibration, reinforcing display device's sound production.

Fig. 20 is a schematic structural view of a vibration unit in a second embodiment of the display device of the present invention.

Referring to fig. 18 to 20, the vibration unit 600 includes a connection member 610 fixed to the hanger 300 or the wall 400, and a speaker 620 connected to the connection member 610; the speaker 620 vibrates to drive the connector 610 to vibrate, and the vibration transmitting vibrator 700 is connected to the connector 610 to transmit the vibration of the speaker 620 to the sound substrate 120 by the transmitted vibration.

In this embodiment, the speaker 620 is not directly fixed on the sound substrate 120, but the sound generator 620 is disposed in the gap between the sound substrate 120 and the hanger 300 and fixed on the hanger 300, so that the display device can generate sound using the speaker 620. The display device is enabled to emit sound by sound emission of the speaker 620. Speaker 620 self can vibrate the sound production, and speaker 620 can drive sound production base plate 120 vibration sound production, and the stack of the sound production of speaker 620 and sound production base plate 120 has strengthened display device's sound production.

The connector 610 includes a fixing portion 611 and a vibration portion 612 flexibly connected to a side of the fixing portion 611 facing the sound substrate 120; the fixed part 611 and the vibrating part 612 enclose to form a box-type structure with a hollow interior; the speaker 620 is connected to the fixing portion 611 and can drive the vibration portion 612 to vibrate; the vibration transmission vibrator 700 is connected to the vibration portion 612, the speaker 620 drives the vibration portion 612 to vibrate, and the vibration portion 612 drives the sound production substrate 120 to vibrate and produce sound through the vibration transmission vibrator 700.

A notch or a ring-shaped protrusion is provided on a surface of the vibration part 612 facing the vibration transducer 700, and a stopper groove 613 is formed on a surface of the vibration part 612 facing the vibration transducer 700.

In this embodiment, the vibration part 612 is made of a flexible material, such as a leather material or an elastic material having elasticity, the flexible material is connected to the fixing part 611 so that the vibration part 612 can move relative to the fixing part 611, and an iron piece or an iron block is disposed on the vibration part 612. The provision of the iron piece or block enables the vibrating portion 612 to be kept flat for connection with the vibration transmitting vibrator 700.

The shape of the vibration portion 612 is circular, oval, racetrack-shaped, and the like, in this embodiment, the vibration portion 612 is circular, and the circular vibration portion 612 makes the stress and vibration of the vibration portion 612 in all directions uniform, so that the vibration can be transmitted to the sound production substrate more uniformly and stably.

In this embodiment, the specific structure of the speaker 620 refers to the structure of the speaker 620 in the first embodiment of the phase display device. Specifically, referring to fig. 21, the speaker 620 includes a support 621, a magnet 622 disposed in the support 621, a frame 623 surrounding the periphery of the support 621, and a diaphragm 624; one end of the basin stand 623 is connected with the bracket 621; the diaphragm 624 is located within the enclosed area of the holder 623 and is connected between the holder 621 and the end of the holder 623 facing away from the holder 621. The frame 623 is formed with a through hole penetrating the wall thickness thereof, and the diaphragm 624 is used for vibration and sound generation.

The connecting member 610 is a box-type structure with a hollow interior; the speaker 620 is embedded in the connector 610 and passes through the fixing part 611 of the connector 610; the speaker 620 is hermetically connected to the fixing part 611 of the connector 610, and a closed space is formed between the inside of the connector 610 and the speaker 620; the two sides of the diaphragm 624 of the speaker 620 are the inner space of the connector 610 and the outer space of the connector 610, respectively, so that one side of the diaphragm 624 forms a closed space, and the vibration of the diaphragm 624 can be enhanced when vibrating.

In this embodiment, the connecting member 610 is a box-type structure with a hollow interior; the frame 623 is fitted into the connector 610, and the outer side surface of the frame 623 is hermetically connected to the fixing part 611, thereby forming a closed space between the connector 610 and the speaker 620, so that both sides of the diaphragm 624 respectively contact the inner space of the connector 610 and the outer space of the connector 610.

In this embodiment, the speaker 620 is embedded in the connector 610, and a closed space is formed between the speaker 620 and the connector 610, so that the speaker 620 vibrates in a free space, and low-frequency sound waves emitted from the front and back surfaces of the diaphragm 624 cancel each other out to form an acoustic short circuit. After the loudspeaker 620 is arranged in the connecting piece 610, two sides of the vibrating membrane 624 are respectively contacted with the closed space inside the connecting piece 610 and the external space of the connecting piece 610, the sound emitted from the back of the vibrating membrane 624 is bound in the connecting piece 610, the phenomenon of sound short circuit is avoided, and the bass effect is enhanced. Meanwhile, the momentum of the driving diaphragm 624 is equal to the momentum of the driving vibrator 700 according to the principle of conservation of momentum and the transmissibility of force. Also, the diaphragm 624 and the frame 623 are "expanded" or "contracted" at the same time, taking the position where the vibration unit 600 is at rest as the origin. This determines that the vibration of the sound substrate 120 and the vibration film 624 are in the same phase, that is, the bass sounds from the sound substrate 120 and the vibration film 624 are superimposed to enhance the overall bass effect.

In this embodiment, the diaphragm 624 is located at an end of the support 621 away from the vibrating portion 612, so that the diaphragm 624 and the vibrating portion 612 are relatively spaced, the vibrating direction of the diaphragm 624 is consistent with the vibrating direction of the vibrating portion 612 capable of vibrating relative to the fixing portion 611, the vibrating portion 612 is embraced to vibrate, and the vibrating amplitude of the vibrating portion 612 is larger, so as to ensure the magnitude of the acting force on the sound substrate 120. And the diaphragm 624 vibrates so that the air in the connector 610 vertically presses on the vibration part 612, enhancing the vibration of the vibration part 612.

In some embodiments, an end of the support 621 of the speaker 620 facing away from the diaphragm 624 is connected to abut against a side of the fixing portion 611 where the vibration portion 612 is disposed, and is disposed offset from the vibration portion 612, so that the speaker 620 does not interfere with the vibration of the vibration portion 612.

Referring to fig. 22, in the present embodiment, a plurality of vibration parts 612 are disposed on one side of the fixing part 611 facing the sound substrate 120, and a plurality of vibration transmitting vibrators 700 are correspondingly disposed on the sound substrate 120. When the plurality of vibration parts 612 are disposed at different positions on the fixing part 611, the vibration parts 612 at different positions have different vibration frequencies or vibration amplitudes when the connector 610 vibrates, and the vibration parts 612 at different frequencies and vibration amplitudes act on the same generation substrate 120 through the vibration transmission vibrator 700, so that more vibration modes of the sound generation substrate 120 can be excited by adjusting the positions. The more the vibration modes are, the more the frequency response curve is balanced, and the better the sound is, so that the user experience is improved.

In some embodiments, the plurality of vibrating portions 612 may be provided in different sizes and shapes to adjust for more vibration modes.

In this embodiment, one speaker 620 and a plurality of vibration parts 612 are disposed in each connector 610, and a single speaker 620 can excite more vibration modes.

Referring to fig. 18 to 22 again, in the present embodiment, the vibration transmission vibrator 700 is a magnetic body, one end of the vibration transmission vibrator 700 is fixedly connected to the sounding substrate 120, and the other end is magnetically attached to the vibration portion 612. The vibration transmission vibrator 700 is connected to the vibration part 612 in a magnetic adsorption mode, when the display device is hung on the wall 400, the vibration unit 600 is installed at the corresponding position on the hanger 300 or the wall 400, then the display screen 100 is installed on the hanger 300 or the wall 400, and the vibration transmission vibrator 700 and the vibration unit 600 are automatically connected to the vibration part 612 in a magnetic adsorption mode, so that the vibration transmission vibrator 700 and the vibration unit 600 can be installed quickly.

In this embodiment, the vibration transmission vibrator 700 is a magnetic pillar, and the structure of the magnetic pillar is stable and reliable, so that the vibration transmission vibrator 700 is stable and reliable. In other embodiments, the ring-shaped structure of the vibration transmission vibrator 700 is a magnet ring, so that the mass of the vibration transmission vibrator 700 is lighter, the loss of the vibration energy on the vibration transmission vibrator 700 is reduced, and the acting force on the sound production substrate 120 is improved.

One end of the vibration transmitting unit 700 facing the vibration unit 600 is inserted into the limiting groove 613 of the connector 610 and connected to the vibration part 612. The arrangement of the limiting groove 613 not only effectively avoids the dislocation of the vibration transmission vibrator 700 and the vibration part 612 when the vibration unit 600 is in use, thereby ensuring the vibration transmission between the vibration transmission vibrator 700 and the loudspeaker 620, and effectively ensuring the stability of the sound production of the display screen 100. Meanwhile, the matching of the vibration transmission vibrator 700 and the limiting groove 613 facilitates the alignment of the vibration transmission vibrator 700 and the limiting groove 613, so that when the display screen 100 is installed, the vibration unit 600 and the display screen 100 are aligned and matched, and the installation speed and accuracy are improved.

In some embodiments, the iron sheet or the iron block on the vibration part 612 is replaced by a magnet, and the magnetism of the vibration transmission vibrator 700 and the magnetism of the vibration part 612 attract each other, so that the connection between the vibration part 612 and the vibration transmission vibrator 700 is more stable and reliable.

A buffer layer made of a buffer material is disposed between the vibration transmitting vibrator 700 and the vibration unit 600. In this embodiment, a buffer layer is provided between the vibration transducer 700 and the vibration part 612. When the vibration unit 600 vibrates, the setting of buffer layer can effectually avoid the striking that produces between the vibration unit 600 and the biography oscillator 700 to the effectual interference of avoiding the sound that the striking produced. And can function to prevent damage or abrasion due to impact of the vibration unit 600 and the vibration transfer vibrator 700.

While the present invention has been described with reference to several exemplary embodiments, it is understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present invention may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the meets and bounds of the claims, or equivalences of such meets and bounds are therefore intended to be embraced by the appended claims.

Claims

1. A display device, comprising:

a display structure for displaying image information;

a sound substrate located at a rear side of the display structure;

the exciter is connected to the rear side surface of the sounding substrate and is used for driving the sounding substrate to emit middle and high tones;

a vibration unit for emitting bass sound; the vibration unit is arranged on the rear side of the sounding substrate and is arranged at an interval with the sounding substrate; the vibration unit is fixed on an external hanging rack or a wall and can generate vibration;

and the vibration transmission vibrator is connected between the sounding substrate and the vibration unit so as to transmit the vibration of the vibration unit to the sounding substrate, so that the sounding substrate vibrates to sound.

2. The display device according to claim 1, further comprising a microphone disposed at a rear side of the sound-emitting substrate, the microphone being formed with a sound-diffusing chamber having an inner diameter gradually enlarged; the public address chamber link up the both ends of megaphone, the one end that the diameter is big in public address chamber is followed the trailing flank orientation of sound production base plate the outside setting of sound production base plate.

3. The display device according to claim 2, wherein the microphone is provided in plurality and provided corresponding to the exciter and the vibration unit, respectively.

4. The display device according to claim 1, wherein the vibration unit comprises a connecting member fixed on an external hanger or a wall, and a speaker connected to the connecting member for driving the connecting member to vibrate; the vibration transmission vibrator is connected between the sounding substrate and the connecting piece.

5. The display device according to claim 4, wherein the connecting member includes a fixing portion and a vibrating portion flexibly connected to a side of the fixing portion facing the sound substrate; the fixed part and the vibrating part are enclosed to form a box-type structure with a hollow interior; the loudspeaker is connected to the fixed part and can drive the vibration part to vibrate; the vibration transmission vibrator is connected to the vibration part.

6. The display device according to claim 5, wherein the speaker is fitted into the connector and penetrates the fixing portion; the loudspeaker is hermetically connected with the fixing part, and a closed space is formed between the inside of the connecting piece and the loudspeaker; one end of the loudspeaker is provided with a vibrating membrane used for vibrating and sounding, and the two sides of the vibrating membrane are respectively the inner space of the connecting piece and the outer space of the connecting piece.

7. The display device according to claim 6, wherein the speaker comprises a support, a magnet disposed in the support, a frame surrounding an outer periphery of the support, and the diaphragm; one end of the basin stand is connected with the bracket; the vibrating membrane is positioned in the enclosing range of the basin frame and connected between one end of the basin frame, which is far away from the support, and the support; the basin frame is embedded in the connecting piece, the outer side surface of the basin frame is hermetically connected with the fixing part, and a closed space is formed between the connecting piece and the loudspeaker.

8. The display device according to claim 7, wherein the diaphragm is located at an end of the bracket facing away from the vibrating portion.

9. The display device according to claim 5, wherein a plurality of the vibration portions are provided on a side of the fixing portion facing the sound substrate, and a plurality of the vibration transmitting vibrators are provided on the sound substrate.

10. The display device according to claim 5, wherein one end of the vibration transmission vibrator is fixedly connected to the sound generating substrate, and the other end of the vibration transmission vibrator is magnetically attracted to the vibrating portion.

11. The display device according to claim 5, wherein a limit groove is provided in the vibrating portion corresponding to the vibration transmitting vibrator, and the vibration transmitting vibrator extends into the limit groove and is connected to the vibrating portion.