CN213846884U - Sound production screen and laser projection system - Google Patents

Abstract

The application discloses sound production screen and laser projection system belongs to laser projection technical field. The sound emission screen includes: the screen comprises a screen body, a frame body and an elastic part. An elastic part is arranged between the first frame in the frame body and the corresponding first edge in the screen body, and the elastic part has better rebound resilience. Hang on the wall when this sound production screen, the screen body when taking place the displacement under the effect of the parallel effect of display surface with this sound production screen, the elastic component that is located between the first edge of first frame and screen body can be compressed or tensile, make the displacement that the screen body takes place under the effect of effect, can stretch in the direction that is on a parallel with the display surface, the probability that this screen body carries out deformation on the thickness direction of sound production screen has been reduced, the roughness of this screen body has been improved, and then the display effect of this sound production screen has been improved.

Description

Sound production screen and laser projection system

Technical Field

The application relates to the technical field of laser projection, in particular to a sound production screen and a laser projection system.

Background

The laser projection system comprises a projection screen and a laser projection device, wherein the laser projection device can project pictures on the projection screen to realize the functions of video playing and the like.

At present, a sounding component in a laser projection system can be integrated in a projection screen to form a sounding screen, so that the effect of integrating sound and pictures is achieved. For example, referring to fig. 1, 2 and 3, fig. 1 is a schematic structural diagram of a sound screen provided in the related art, fig. 2 is an exploded view of the sound screen shown in fig. 1, and fig. 3 is an enlarged sectional view of the sound screen shown in fig. 1 at a. The sound screen 00 may include: the screen comprises a screen body 01, a shock absorption layer 02, a frame body 03, a cover plate 04, an exciter 05, a suspension shock absorption layer 06 and a suspension bracket 07. The screen body 01 may include: an optical curtain sheet 011 and a sound board 012, and a curtain sheet adhesive layer 013 located between the optical curtain sheet 011 and the sound board 012. The shock-absorbing layer 02 is wrapped on the edge of the screen body 01, and the frame body 03 can surround the screen body 01 and is clamped with the edge of the screen body 01 through the shock-absorbing layer 02. The cover plate 04 may be strip-shaped, and both ends of the cover plate 04 are connected to the frame 03. The exciter 05 is located between the screen body 01 and the cover plate 04, and the exciter 05 is bonded to a face of the sound board 012 of the screen body 01, which face is away from the optical curtain sheet 011. The exciter 04 may vibrate with the sound board 012 provided in the screen body 01 to generate sound. The hanging bracket 07 may include: a hook and a fixing part. The clamping hook is connected with the frame body 03 through the suspension damping layer 06, and the fixing part can be fixedly connected with a wall through a fastening screw. By means of the hanging bracket 07, the sound screen 00 can be hung on a wall.

Referring to fig. 4, fig. 4 is a state diagram in which the sound screen shown in fig. 1 is hung on a wall. After the sound screen 00 is hung on a wall, a certain angle is formed between the display surface of the sound screen 00 (i.e., the surface of the optical curtain sheet 011 away from the sound board 012) and the wall. Thus, as shown in fig. 5, fig. 5 is a force analysis diagram of the sound screen shown in fig. 4. The self-gravity G of the sound screen 00 can be decomposed into: a first acting force F1 parallel to the thickness direction of the sound screen 00, and a second acting force F2 parallel to the display surface of the sound screen 00.

As can be seen from the force analysis shown in fig. 5, the second acting force F2 borne by the screen body 01 of the sound-emitting screen 00 is much larger than the first acting force F1. Thus, the screen body 01 is displaced in a direction parallel to the second force F2 by the second force F2. However, as shown in fig. 3, since the edge of the screen body 01 is engaged with the frame 03, the frame 03 may obstruct the displacement of the screen body 01 in the direction parallel to the display surface, and therefore, the displacement of the screen body 01 under the second acting force F2 cannot extend in the direction parallel to the display surface, which causes the screen body 01 to deform in the thickness direction of the sound-emitting screen 00, and the deformation is mainly concentrated in the central area of the screen body 01, which further causes the flatness of the screen body 01 to be low, which may seriously affect the display effect of the sound-emitting screen 00.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a sound production screen and a laser projection system. The problem of the relatively poor display effect of vocal screen among the prior art can be solved, technical scheme is as follows:

in one aspect, a sound screen is provided, the sound screen comprising:

a screen body;

a frame body surrounding a periphery of the screen body, the frame body including: the screen body is provided with two first edges which correspond to the two first edges one by one and two second edges which correspond to the two second edges one by one, each first edge is clamped at the corresponding first edge in the screen body, each second edge is adjacent to the corresponding second edge in the screen body, and a gap is reserved between each second edge and the corresponding second edge in the screen body;

and the elastic parts are positioned between each first frame and the corresponding first edge in the screen body and are respectively contacted with the first frames and the corresponding first edges.

In another aspect, there is provided a laser projection apparatus including: laser projection equipment to and foretell sound screen.

The beneficial effects brought by the technical scheme provided by the embodiment of the application at least comprise:

the sound emission screen includes: the screen comprises a screen body, a frame body and an elastic part. An elastic part is arranged between the first frame in the frame body and the corresponding first edge in the screen body, and the elastic part has better rebound resilience. Hang on the wall when this sound production screen, the screen body when taking place the displacement under the effect of the parallel effect of display surface with this sound production screen, the elastic component that is located between the first edge of first frame and screen body can be compressed or tensile, make the displacement that the screen body takes place under the effect of effect, can stretch in the direction that is on a parallel with the display surface, the probability that this screen body carries out deformation on the thickness direction of sound production screen has been reduced, the roughness of this screen body has been improved, and then the display effect of this sound production screen has been improved. Simultaneously, because the second frame in the framework has the clearance with the second edge of screen body between, consequently, when the screen body in this sound production screen is heated the thermal expansion under high temperature environment, the deformation that the second edge of this screen body produced can extend in the clearance, and the deformation that the first edge of this screen body produced can compress the elastic component in order to extend. So, the deformation that this screen body produced after the thermal expansion can be to stretching all around, further reduction the probability that deformation appears in the central zone of this screen body to further improve the roughness of this screen body, and then improved the display effect of this sound production screen.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a sound screen provided in the related art;

FIG. 2 is an exploded view of the sound screen shown in FIG. 1;

FIG. 3 is an enlarged cross-sectional view of the sound screen shown in FIG. 1 at A;

fig. 4 is a state diagram in which the sound screen shown in fig. 1 is hung on a wall;

FIG. 5 is a force analysis diagram of the sound screen shown in FIG. 4;

fig. 6 is a schematic structural diagram of a sound screen provided in an embodiment of the present application;

FIG. 7 is an exploded view of the sound screen shown in FIG. 6;

FIG. 8 is a cross-sectional view of the sound screen shown in FIG. 7;

FIG. 9 is a schematic diagram of another exemplary sound screen provided in the embodiments of the present application;

FIG. 10 is an exploded view of the sound screen shown in FIG. 9;

FIG. 11 is a cross-sectional view of the sound screen shown in FIG. 9;

fig. 12 is an effect diagram of a sound board provided by an embodiment of the present application in a multi-mode;

fig. 13 is a schematic structural diagram of the sounding screen shown in fig. 9 in which the first frame is engaged with the first edge of the screen body;

fig. 14 is a schematic structural diagram of the second frame of the sound screen shown in fig. 9 cooperating with the second edge of the screen body;

fig. 15 is a schematic structural diagram of a laser projection system according to an embodiment of the present application.

Detailed Description

To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 6, 7 and 8, fig. 6 is a schematic structural diagram of a sound screen provided in an embodiment of the present application, fig. 7 is an exploded view of the sound screen shown in fig. 6, and fig. 8 is a cross-sectional view of the sound screen shown in fig. 7. The sound screen 000 may include:

the screen includes a screen body 100, a frame 200, and an elastic part 300.

The frame 200 surrounds the screen body 100. The frame 200 may include: two first frames 201 arranged oppositely and two second frames 201 arranged oppositely, the second frame 202 is connected with the first frames 201. The screen body 100 has two first edges 100a corresponding to the two first frames 201 one to one, and second edges 100b corresponding to the two second frames 202 one to one. Each first frame 201 is clamped at a corresponding first edge 100a in the screen body 100, each second frame 202 is adjacent to a corresponding second edge 100B in the screen body 100, and a gap B is provided between each second frame 202 and the corresponding second edge 100B in the screen body 100.

The elastic part 300 is located between each first frame 201 and the corresponding first edge 100a of the screen body 100, and the elastic part 300 is in contact with the first frame 201 and the corresponding first edge 100a, respectively.

In the present application, an elastic portion 300 is provided between the first frame 201 in the frame 200 and the corresponding first edge 100a in the screen body 100, and the elastic portion 300 has a good resilience. When the sound screen 000 is hung on a wall, and the screen body 100 is displaced under the action of a force parallel to the display surface of the sound screen 000 (that is, the plane on which the laser projection device projects a picture to the sound screen 000), the elastic portion 300 between the first frame 201 and the first edge 100a of the screen body 100 may be compressed or stretched, so that the screen body 100 is displaced under the action of a force parallel to the display surface of the sound screen 000, and can be stretched in a direction parallel to the display surface, thereby reducing the probability that the screen body 100 is deformed in the thickness direction of the sound screen 000, improving the flatness of the screen body 100, and further improving the display effect of the sound screen 000. Meanwhile, since the gap B is formed between the second frame 202 of the sound-generating screen 000 and the second edge 100B of the screen body 100, when the screen body 100 of the sound-generating screen 000 is thermally expanded in a high-temperature environment, the second edge 100B of the screen body 100 is deformed to extend in the gap B, and the first edge 100a of the screen body 100 is deformed to compress the elastic portion 300 to extend. So, the deformation that this screen body 100 produced after the thermal expansion can be to stretching all around, further reduction the probability that deformation appears in the central zone of this screen body 100 to further improve the roughness of this screen body 100, and then improved the display effect of this sound screen 000.

In summary, the sound screen provided by the embodiment of the present application includes: the screen comprises a screen body, a frame body and an elastic part. An elastic part is arranged between the first frame in the frame body and the corresponding first edge in the screen body, and the elastic part has better rebound resilience. Hang on the wall when this sound production screen, the screen body when taking place the displacement under the effect of the parallel effect of display surface with this sound production screen, the elastic component that is located between the first edge of first frame and screen body can be compressed or tensile, make the displacement that the screen body takes place under the effect of effect, can stretch in the direction that is on a parallel with the display surface, the probability that this screen body carries out deformation on the thickness direction of sound production screen has been reduced, the roughness of this screen body has been improved, and then the display effect of this sound production screen has been improved. Simultaneously, because the second frame in the framework has the clearance with the second edge of screen body between, consequently, when the screen body in this sound production screen is heated the thermal expansion under high temperature environment, the deformation that the second edge of this screen body produced can extend in the clearance, and the deformation that the first edge of this screen body produced can compress the elastic component in order to extend. So, the deformation that this screen body produced after the thermal expansion can be to stretching all around, further reduction the probability that deformation appears in the central zone of this screen body to further improve the roughness of this screen body, and then improved the display effect of this sound production screen.

In the embodiment of the present application, please refer to fig. 9, 10 and 11, fig. 9 is a schematic structural diagram of another sound screen provided in the embodiment of the present application, fig. 10 is an exploded view of the sound screen shown in fig. 9, and fig. 11 is a cross-sectional view of the sound screen shown in fig. 9. The screen body 100 in the sound screen 000 may include: an optical curtain sheet 101 and a sound-emitting panel 102, and a curtain sheet adhesive layer 103 between the optical curtain sheet 101 and the sound-emitting panel 102. The optical sheet 101 may be bonded to the sound-emitting panel 102 by a sheet bonding layer 103. The surface of the optical curtain sheet 101 remote from the sound board 102 is a display surface of the sound screen 000.

The sound screen 000 may further include: a cover plate 300 and an exciter 400. The cover plate 300 may be in the shape of a strip, and the cover plate 300 may be connected to the frame 200. In the present application, both ends of the cover plate 300 are connected to the frame 200.

The actuator 400 may be located between the cover plate 300 and the sound screen 100. And the exciter 400 may be connected to the screen body 100 and the cover 300, respectively. The exciter 400 is used for driving the screen body 100 to vibrate to generate sound.

The sound-emitting panel 102 in the screen body 100 is close to the cover plate 400 with respect to the optical curtain sheet 101, so that the exciter 500 between the cover plate 400 and the screen body 100 can be connected to the sound-emitting panel 102 in the screen body 100. The exciter 500 may drive the sound-emitting panel 102 in the screen body 100 to vibrate to emit sound, thereby allowing the sound-emitting screen 000 to emit sound.

Illustratively, actuators 500 in sound screen 000 may be electrically connected to a laser projection device that, in operation, sends acoustic electrical signals to actuators 500. After receiving the sound electrical signal, the exciter 500 may perform a reciprocating motion based on the sound electrical signal, so as to drive the entire surface of the sound board 102 in the screen body 100 to vibrate together, so that the sound board 102 sounds, and thus the sound screen 000 can make a sound when the laser projection apparatus works.

In the present application, the sound-emitting panel 102 in the screen body 100 may include: the aluminum honeycomb core comprises a plate-shaped aluminum honeycomb core layer and glass fiber skins positioned on two sides of the aluminum honeycomb core layer. The driver 500 may be attached to one fiberglass skin of the sound board 102, while the other fiberglass skin needs to be bonded to the optical curtain sheet 101 through the curtain bonding layer 103. As shown in fig. 12, fig. 12 is an effect diagram of a multi-mode sound-emitting panel according to an embodiment of the present invention, when the exciter 500 operates, due to the presence of the aluminum honeycomb core layer in the sound-emitting panel 102, sound generated by vibration of the sound-emitting panel 102 is in a multi-mode state over the entire surface of the sound-emitting panel 102, so that the sound-emitting panel 102 can vibrate at multiple positions in a face-to-face manner, and thus the front surface of the sound-emitting panel 102 can emit sound. The sound board 102 may have a thickness ranging from 2 mm to 10 mm. For example, the thickness of the sound board 102 may be 5 mm.

The optical curtain sheet 101 in the screen body 100 has a micro-mirror reflective structure therein, and the micro-mirror reflective structure can reflect light emitted from the laser projection device in a specific direction. Therefore, the light reflected by the micro-mirror reflection structure can reach the eyes of a user to the maximum extent, so that the user can watch a clearer picture. By way of example, the optical curtain sheet 101 may include: circular fresnel optical film, black grid screen or white plastic screen, etc. The thickness of the optical curtain sheet 101 may range from 0.5 mm to 1.7 mm. For example, the thickness of the optical curtain sheet 101 may be 1.0 mm.

The curtain sheet bonding layer 103 in the screen body 100 may be an adhesive such as a glue film or a double-sided tape. The thickness of the curtain bonding layer 103 may range from 0.1 mm to 1 mm. For example, the thickness of the curtain adhesive layer 103 may be 0.5 mm.

Alternatively, as shown in fig. 11, the screen body 100 may have a rectangular plate shape, and the frame 200 may be a rectangular ring-shaped frame matching the shape of the screen body 100. In this case, each first frame 201 and each second frame 202 in the frame 200 are elongated, and the elastic portion 300 in the sound screen 000 may also be elongated, wherein the length direction of each first frame 201 is the same as the length direction of the elastic portion 300.

The two first frames 201 and the two second frames 202 are sequentially connected end to form a rectangular frame body matching the shape of the screen body 100. For example, any two adjacent first and second frames 201 and 202 may be connected by an L-shaped connecting member, and the L-shaped connecting member may be fastened to the first and second frames 201 and 202 by screws. The material of the frame 200 in the sound screen 000 may be a metal material such as an aluminum alloy or a magnesium alloy.

In the present application, as shown in fig. 10, the sound screen 000 may further include: and a hanging part 600 connected to one of the two first frames 201. The hanging part 600 may include: a sheet-shaped hook connected with the first frame 201, and a sheet-shaped fixing part connected with the hook, and the fixing part can be fixedly connected with the wall through a set screw. By the hanging part 600, it is possible to hang the sound screen 000 on the wall.

Alternatively, the material of the hanging portion 600 may include: plastic, aluminum plastic plate, steel or carbon fiber composite plate and the like.

For example, a shock absorbing layer may be disposed at a portion of the suspension portion 600 contacting the first frame 201, and a thickness of the shock absorbing layer may range from 0.5 mm to 0.8 mm. The shock-absorbing layer may be made of materials including: acrylic acid sub-sensitive adhesive tape, similar adhesive tape, silica gel pad or foam, etc. This buffer layer has improved the stability that this sound screen hung on the wall, simultaneously, can also reduce screen body 100 under the effect of vibration, leads to appearing the collision and produce the probability of noise between linkage 600 and first frame 201, further improvement the audio of the sound that sound screen 000 made.

In an embodiment of the present application, please refer to fig. 13, and fig. 13 is a schematic structural diagram illustrating a structure of the sound screen shown in fig. 9 in which the first border is engaged with the first edge of the screen body. Each first frame 201 of the frame body 200 in the sound screen 000 has a catching groove 201a, the catching groove 201a has a groove surface C, a groove surface D, and a groove surface E connected in sequence, and the elastic portion 300 in the sound screen 000 is located in the catching groove 201 a. Each first frame 201 is connected to the corresponding first edge 100a of the screen body 100 through the clamping groove 201a and the elastic part 300 in the clamping groove 201 a.

In this application, there are many possible implementation manners for each first frame 201 to be connected to the corresponding first edge 100a of the screen body 100 through the clamping groove 201a and the elastic portion in the clamping groove 201a, and the embodiment of this application is schematically illustrated in the following two possible implementation manners:

in a first possible implementation manner, the elastic part 300 is bonded to the groove surfaces C, D and E of the clamping groove 201a in the first frame 201, and the elastic part 300 is bonded to the side surface of the first edge 100a of the screen body 100. In this way, the first frame 201 can be connected to the corresponding first edge 100a of the screen body 100 through the clamping groove 201a, and the elastic part 300 in the clamping groove 201 a.

Optionally, the elastic portion 300 may be adhered to the first edge 100a of the screen body 100 and the clamping groove 201a of the first frame 201 by using glue, an adhesive film, or a double-sided adhesive.

In a second possible implementation manner, the elastic portion 300 is respectively pressed into the clamping groove 201a in the first frame 201 and the first edge 100a of the screen body 100. Thus, the first frame 201 is connected by the clamping groove 201a and the interference fit between the elastic part 300 in the clamping groove 201a and the corresponding first edge 100a of the screen body 100.

In the present application, please refer to fig. 14, and fig. 14 is a schematic structural diagram illustrating a structure of the sounding screen shown in fig. 9 in which the second frame is engaged with the second edge of the screen body. The second frame 202 in the frame 200 of the sound screen 000 has a groove 202a, the second edge 100B of each screen body 100 is located in the groove 202a of the corresponding second frame 202, and a gap B is formed between the bottom surface F of the groove 202a and the second edge 100B of the screen body 100. Thus, when the screen body 100 is expanded by heat in a high temperature environment, the deformation of the second edge 100b of the screen body 100 can be extended in the groove 202a of the second frame 202, so as to reduce the probability of deformation in the central area of the screen body 100, and further improve the flatness of the screen body 100. Meanwhile, the groove 202a can wrap the second edge 100b of the screen body 100, so that the aesthetic degree of the sound screen 000 is improved.

In the embodiment of the present application, the elastic part 300 in the sound screen 000 may include: a soft rubber layer or a spring leaf. So, this elastic component 300 can have good resilience, when screen body 100 in the sound screen 000 takes place the displacement under the effect of the effect that is on a parallel with the display surface of this sound screen 000, or when screen body 100 in the sound screen 000 is heated the inflation and takes place deformation under high temperature environment, this elastic component 300 can be compressed or tensile, for the displacement and the deformation of screen body 100 in the sound screen 000 provide the space of extension, reduce this screen body 100 and carry out the probability of deformation in the thickness direction of sound screen 000, the roughness of this screen body 100 has been improved.

In the present application, the thickness of the elastic part 300 may be in the range of: 5 to 15 mm. Since the elastic part 300 is used to provide a space for the screen body 100 in the sound-emitting screen 000 to be displaced by the decomposition force of its own gravity and the deformation of the screen body 100 in the sound-emitting screen 000 due to thermal expansion in a high-temperature environment, the thickness of the elastic part 300 can be calculated according to the self-gravity of the screen body 100 in the sound-emitting screen 000 and the deformation of the screen body 100 in the sound-emitting screen 000 due to thermal expansion in a high-temperature environment.

For example, as shown in fig. 11, the two first frames 201 in the sound-emitting screen 000 may be: a first rim 2011 and a first rim 2012, the first rim 2011 being connected to the hanging portion 600, the first rim 2012 being disposed opposite to the first rim 2011. The elastic part 300 in the sound emission screen 000 may include: a first elastic part 301 located between the first rim 2011 and its corresponding first edge 100a, and a second elastic part 302 located between the first rim 2012 and its corresponding first edge 100 a. When the sound screen 000 is hung on a wall, the screen body 100 of the sound screen 000 will displace under the decomposition force of its own gravity, the second elastic portion 302 will be compressed, and the first elastic portion 301 will be stretched; when the sound screen 000 is expanded by heat under a high temperature environment to deform, both the first elastic portion 301 and the second elastic portion 302 are compressed.

As for the first elastic part 301, since the first elastic part 301 is only pressed by the deformation of the screen body 100 in the sound-emitting screen 000 due to thermal expansion in a high-temperature environment, but not by the displacement of the screen body 100 in the sound-emitting screen 000 due to the decomposition force of its own gravity. Therefore, when calculating the thickness of the first elastic part 301, the first thickness of the first elastic part 301 may be determined according to the self-gravity of the screen body 100 in the sound screen 000, and the second thickness of the first elastic part 301 may be calculated according to the deformation amount generated by thermal expansion in a high temperature environment, and then the larger thickness of the first thickness and the second thickness may be selected as the thickness of the first elastic part 301.

For the second elastic portion 302, since the second elastic portion 302 is simultaneously pressed by the displacement of the screen body 100 in the sound-emitting screen 000 due to the decomposition force of the self gravity and the deformation of the screen body 100 in the sound-emitting screen 000 due to the thermal expansion in the high-temperature environment, when calculating the thickness of the second elastic portion 302, the third thickness of the second elastic portion 302 can be determined according to the self gravity of the screen body 100 in the sound-emitting screen 000, and the fourth thickness of the second elastic portion 302 can be calculated according to the deformation amount of the screen body 100 in the high-temperature environment, and then the third thickness and the fourth thickness are added to obtain the thickness of the second elastic portion 302.

In this application, the range of the gap B between the second frame 201 in the frame 200 and the corresponding second edge 100B in the screen body 100 may be: 8 to 20 mm. Since the gap B is used to provide an extended space for the deformation of the screen body 100 in the sound-generating screen 000 caused by thermal expansion in a high-temperature environment, the gap B can be calculated according to the deformation amount of the screen body 100 in the sound-generating screen 000 caused by thermal expansion in a high-temperature environment.

In the embodiment of the present application, as shown in fig. 9 and 10, the number of the cover plates 400 in the sound-emitting screen 000 may be two, and the sound-emitting screen 000 may further include: a bar-shaped support plate 700 positioned between the two cover plates 400. Both ends of the support plate 700 may be connected to the frame 200. The supporting plate 700 can support the screen body 100 of the sound screen 000, prevent the center of the screen body 100 from collapsing, and improve the stability of the sound screen 000.

Illustratively, the length directions of the two cover plates 400 and the length direction of the support plate 700 in the sound screen are parallel. And both ends of each cover plate 400, and both ends of the support plate 700 may be connected to the frame body 200 by screws. Alternatively, shock-absorbing layers may be disposed at both ends of each cover plate 400 and at positions where both ends of the support plate 700 contact the frame 200, and the thickness of the shock-absorbing layers may range from 0.5 mm to 0.8 mm. The shock-absorbing layer may be made of materials including: acrylic acid sub-sensitive adhesive tape, similar adhesive tape, silica gel pad or foam, etc. The shock-absorbing layer can reduce the probability that the screen body 100 collides with the cover plate 400 or the support plate 700 and the frame body 200 to generate noise under the action of vibration, and further improves the sound effect of the sound generated by the sound-generating screen.

In the embodiment of the present application, the plurality of actuators 500 between the cover plate 400 and the screen body 100 in the sound screen may be bonded to the cover plate 400 by a shock-absorbing adhesive layer, so as to achieve a secure connection between the actuators 500 and the cover plate 400 in the projection screens 000.

For example, when the exciter 500 is bonded to the cover plate 400 through the vibration-damping adhesive layer, the exciter 500 may be prevented from being in hard contact with the cover plate 400, and an acting force applied to the cover plate 400 by the exciter 500 during operation may be reduced, so that a probability of an engine vibration phenomenon occurring in the cover plate 400 during operation of the exciter 500 may be reduced, and a volume of noise generated when the cover plate 400 generates the engine vibration phenomenon may be reduced, thereby improving a sound effect of sound generated by the sound-generating screen.

The structure of the damping adhesive layer in the embodiments of the present application is schematically described by taking the following two cases as examples:

in a first aspect, the shock absorbing adhesive layer may include: the shock attenuation bubble is cotton to and be located the double faced adhesive tape of the cotton both sides of this shock attenuation bubble. The shock absorption foam is bonded with the exciter 500 through double-sided adhesive tape, and the shock absorption foam is also bonded with the cover plate 400 through double-sided adhesive tape. A gap exists between the exciter 500 and the cover plate 400, and a shock-absorbing foam may be filled in the gap. The thickness of the shock absorbing foam may range from 0.2 mm to 0.5 mm.

In a second aspect, the shock absorbing adhesive layer may include: a modified rubber material layer. The layer of modified rubber material may have a thickness of 2 mm to 2.5 mm. The modified rubber material layer has good flexibility and good adhesion. The modified rubber material layer also has the characteristics of high temperature resistance and low temperature resistance. For example, the modified rubber material layer is not easy to drip at high temperature and is not easy to harden and fall off at low temperature, and the modified rubber material layer can meet the use environment of the sound production screen in the laser projection system. Meanwhile, the modified rubber material layer can ensure certain elasticity and can better play a role in buffering in the reciprocating motion process of the exciter 500.

In summary, the sound screen provided by the embodiment of the present application includes: the screen comprises a screen body, a frame body and an elastic part. An elastic part is arranged between the first frame in the frame body and the corresponding first edge in the screen body, and the elastic part has better rebound resilience. Hang on the wall when this sound production screen, the screen body when taking place the displacement under the effect of the parallel effect of display surface with this sound production screen, the elastic component that is located between the first edge of first frame and screen body can be compressed or tensile, make the displacement that the screen body takes place under the effect of effect, can stretch in the direction that is on a parallel with the display surface, the probability that this screen body carries out deformation on the thickness direction of sound production screen has been reduced, the roughness of this screen body has been improved, and then the display effect of this sound production screen has been improved. Simultaneously, because the second frame in the framework has the clearance with the second edge of screen body between, consequently, when the screen body in this sound production screen is heated the thermal expansion under high temperature environment, the deformation that the second edge of this screen body produced can extend in the clearance, and the deformation that the first edge of this screen body produced can compress the elastic component in order to extend. So, the deformation that this screen body produced after the thermal expansion can be to stretching all around, further reduction the probability that deformation appears in the central zone of this screen body to further improve the roughness of this screen body, and then improved the display effect of this sound production screen.

The embodiment of the application also provides a laser projection system, and the laser projection system can be an ultra-short-focus laser projection system. For example, as shown in fig. 15, fig. 15 is a schematic structural diagram of a laser projection system according to an embodiment of the present application. The laser projection system may include: a sound screen 000 and a laser projection device 001. The sound screen 000 may be the sound screen in the above embodiment. The laser projection device 001 may be electrically connected to an actuator in the sound screen 000.

Thus, when the laser projection device 001 works, the laser projection device 001 can emit light rays obliquely upwards, so that the laser projection device 001 can project pictures to the sound screen 000; the laser projection device 001 may also send acoustic electrical signals to actuators in the sound screen 000 so that the sound screen 000 can sound while displaying the projected picture.

In this application, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is intended to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.

Claims (10)

1. A sound screen, comprising:

a screen body;

a frame body surrounding a periphery of the screen body, the frame body including: the screen body is provided with two first edges which correspond to the two first edges one by one and two second edges which correspond to the two second edges one by one, each first edge is clamped at the corresponding first edge in the screen body, each second edge is adjacent to the corresponding second edge in the screen body, and a gap is reserved between each second edge and the corresponding second edge in the screen body;

and the elastic parts are positioned between each first frame and the corresponding first edge in the screen body and are respectively contacted with the first frames and the corresponding first edges.

2. The sound screen of claim 1,

each second frame is provided with a groove, each second edge is positioned in the corresponding groove in the second frame, and the gap is formed between each second edge and the bottom surface of the corresponding groove in the second frame.

3. The sound screen of claim 1,

every first frame has the joint groove, the elastic component is located the joint inslot, every first frame passes through the joint groove, and be located the elastic component and the first edge connection that corresponds of joint inslot.

4. The sound screen of claim 3,

the elastic parts are respectively bonded with the groove surface of the clamping groove in the first frame and the corresponding first edge.

5. The sound screen of claim 1,

the sound emission screen further includes: and a suspension part connected with the first frame.

6. The sound screen of claim 1,

each first frame and the elastic part are in a long strip shape, and the length direction of each first frame is the same as that of the elastic part.

7. The sound screen of any one of claims 1 to 6,

the elastic portion includes: a soft rubber layer or spring leaf; the thickness range of the elastic part is as follows: 5 to 15 mm.

8. The sound screen of any one of claims 1 to 6,

the range of the gap between the second frame and the corresponding second edge is: 8 to 20 mm.

9. The sound screen of any one of claims 1 to 6,

the sound emission screen further includes:

the two ends of the cover plate are connected with the frame body;

and the exciter is positioned between the cover plate and the screen body, is respectively connected with the screen body and the cover plate, and is used for driving the screen body to vibrate so as to make sound.

10. A laser projection system, comprising: a laser projection device, and a sound screen according to any one of claims 1 to 9.

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