Sound-emitting screen and projection system

Abstract

The application relates to the technical field of audio-video equipment, and discloses a sound-emitting screen and a projection system. The sound-emitting screen comprises a sound-emitting plate and an optical film. The sound-emitting plate comprises a skin, a reinforcing structure and an exciter. The skin comprises opposite first and second surfaces; the reinforcing structure is fixed to the first surface; the reinforcing structure comprises a plurality of reinforcing plates, the plurality of reinforcing plates separate the first surface into a plurality of sound areas; the exciter is fixed to the first surface; and the exciter is arranged in each sound area. The optical film is fixed to the second surface. The sound-emitting screen provided by the application can enhance the sound area resolution and improve the sound-emitting effect.

Description

Technical Field

[0001] This application relates to the field of audio and video equipment technology, and in particular to a sound-emitting screen and projection system. Background Technology

[0002] Laser TVs, as a new display format, have advantages such as large screen and eye protection. However, the separation of the laser projector host and the projection screen leads to poor coordination between sound and picture effects, resulting in a poor viewing experience for users. Therefore, sound-emitting screens have been introduced.

[0003] A laser TV sound-emitting screen is a screen capable of emitting sound, acting as a speaker while displaying images, providing a better user experience. Currently, a sound-emitting screen includes a display functional layer and a sound-emitting structure located on the back of the display functional layer (i.e., the side that does not carry the image). This sound-emitting structure includes an auxiliary sound-emitting layer and multiple electromagnetic speakers positioned on the side of the auxiliary sound-emitting layer away from the display functional layer. Each electromagnetic speaker includes a magnetic unit and a voice coil surrounding the magnetic unit. When the voice coil is energized, a control current signal causes the voice coil to reciprocate within the magnetic field of the magnetic unit, simultaneously causing the auxiliary sound-emitting layer to vibrate and radiate sound waves.

[0004] The existing sound-generating screen is driven by two sets of exciters on the left and right to achieve dual-channel sound generation. Because the entire sound-generating structure vibrates during the driving process, even if the left and right exciters are controlled by software, the vibration will still cause the entire sound-generating structure to vibrate, resulting in low differentiation between the left and right channels and poor sound generation effect. Utility Model Content

[0005] This application discloses a sound-emitting screen and projection system, which uses a reinforcing structure to physically partition the sound-emitting panel to isolate the sound generated in each section, enhance sound differentiation, and improve the sound emission effect.

[0006] To achieve the above objectives, this application provides the following technical solution:

[0007] In a first aspect, this application provides a sound-emitting screen, comprising:

[0008] Sound-emitting plate, including:

[0009] Skin, the skin including opposing first and second surfaces;

[0010] A reinforcing structure is fixed to the first surface; the reinforcing structure includes multiple reinforcing plates, which divide the first surface into multiple acoustic zones; and

[0011] An exciter is fixed to the first surface; each of the sound zones is provided with the exciter.

[0012] An optical film is fixed to the second surface.

[0013] The aforementioned sound-emitting screen includes a sound-emitting plate and an optical diaphragm. The sound-emitting plate is used to emit sound, and the optical diaphragm is used to display images. The sound-emitting plate includes a skin, a reinforcing structure, and an exciter. The skin includes a first surface and a second surface facing each other. The reinforcing structure and the exciter are both fixed to the first surface, and the optical diaphragm is fixed to the second surface. The skin is used to transfer energy from the exciter to the entire sound-emitting plate and amplify the sound through its own vibration. The reinforcing structure includes multiple reinforcing plates that divide the first surface into multiple sound zones. Each sound zone contains an exciter, which converts external energy into mechanical vibration and drives the entire sound-emitting plate to emit sound. This application uses a reinforcing structure including multiple reinforcing plates to physically partition the sound-emitting plate, isolating the sound generated in each zone, improving the isolation of the sound-emitting area, making the sound distinction more obvious, and resulting in better sound effects.

[0014] In some embodiments, the reinforcing structure includes:

[0015] The first reinforcing plate extends along the first direction;

[0016] A second reinforcing plate is connected to the first reinforcing plate, and the second reinforcing plate extends along a second direction, which intersects with the first direction;

[0017] A third reinforcing plate is connected to the first reinforcing plate, the third reinforcing plate extending along a third direction, the third direction intersecting the first direction; and

[0018] A fourth reinforcing plate is connected to the first reinforcing plate, and the fourth reinforcing plate extends along a fourth direction, which intersects with the first direction;

[0019] Wherein: the first reinforcing plate divides the first surface into a first region and a second region; the second reinforcing plate and the third reinforcing plate are located in the first region and divide the first region into a first sound zone, a second sound zone and a third sound zone; the fourth reinforcing plate is located in the second region and divides the second region into a fourth sound zone and a fifth sound zone.

[0020] In some embodiments, the second reinforcing plate, the third reinforcing plate, and the fourth reinforcing plate are all perpendicular to the first reinforcing plate.

[0021] In some embodiments, the skin includes:

[0022] First side; and

[0023] The second side is connected to the first side;

[0024] Wherein: the first reinforcing plate is parallel to the first side, and the second, third and fourth reinforcing plates are all parallel to the second side.

[0025] In some embodiments, the first sound zone is the left channel zone, the second sound zone is the center voice zone, the third sound zone is the right channel zone, the fourth sound zone is the left surround zone, and the fifth sound zone is the right surround zone.

[0026] Alternatively, the first sound zone is the left surround sound zone, the second sound zone is the center sound zone, the third sound zone is the right surround sound zone, the fourth sound zone is the left channel zone, and the fifth sound zone is the right channel zone.

[0027] In some embodiments, the skin is an aluminum plate.

[0028] In some embodiments, the thickness of the skin is 1.3mm-1.4mm.

[0029] In some embodiments, the sound-emitting plate further includes a flexible element fixed to the periphery of the first surface.

[0030] In some embodiments, both the second reinforcing plate and the third reinforcing plate have a plurality of mounting holes on the side opposite to the first surface, and the arrangement direction of the plurality of mounting holes is parallel to the second side.

[0031] Secondly, this application provides a projection system, comprising:

[0032] Projection equipment; and

[0033] A projection screen, wherein the projection screen is the sound-emitting screen described in the first aspect. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the structure of a projection system provided in an embodiment of this application.

[0035] Figure 2 This is a top view of a sound-emitting screen provided in an embodiment of this application.

[0036] Figure 3 This is a rear view structural diagram of a sound-generating plate provided in an embodiment of this application.

[0037] Figure 4 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application.

[0038] Figure 5 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application.

[0039] Figure 6This is a graph showing the performance of aluminum skin, fiberglass skin, and 1.4mm thick aluminum plate under an exciter according to an embodiment of this application.

[0040] Figure 7 This is a graph showing the performance of aluminum skin and a 1.4mm thick aluminum plate under an exciter according to an embodiment of this application.

[0041] Figure 8 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application.

[0042] Figure 9 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application.

[0043] Figure 10 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application.

[0044] Figure 11 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application.

[0045] Figure 12 This is a schematic diagram of a sound zone distribution provided in an embodiment of this application.

[0046] Figure 13 This is a schematic diagram of another acoustic zone distribution provided in an embodiment of this application.

[0047] Figure 14 This is a rear view structural diagram of a sound-emitting plate with a flexible component provided in an embodiment of this application.

[0048] Figure 15 This is a schematic diagram of the structure of an optical film provided for an embodiment of the application.

[0049] Icons: 1-Projection device; 2-Projection screen; 11-Sound-emitting plate; 12-Optical film; 111-Skin; 1111-First side; 1112-Second side; 1113-First side; 1114-Second side; 112-Reinforcing structure; 1121-Reinforcing plate; 1122-First reinforcing plate; 1123-Second reinforcing plate; 1124-Third reinforcing plate; 1125-Fourth reinforcing plate; 113-Illuminator Exciter; A-First region; B-Second region; A1-First acoustic zone; A2-Second acoustic zone; A3-Third acoustic zone; B1-Fourth acoustic zone; B2-Fifth acoustic zone; 13-Flexible component; 14-Mounting hole; 114-Honeycomb core; 115-Partition boundary; 116-Foamed material body; 01-Surface layer; 02-Coloring layer; 03-Diffusion layer; 04-Fresnel microlens layer; 05-Reflective layer; 06-Supporting structure. Detailed Implementation

[0050] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application. In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships, for example, A and / or B can represent: A alone, A and B at the same time, and B alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.

[0051] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature, and in the description of the embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0052] Figure 1 This is a schematic diagram of the structure of a projection system provided in an embodiment of this application.

[0053] like Figure 1 As shown, the projection system includes a projection device 1 and a projection screen 2. The projection screen 2 is located on the light-emitting side of the projection device 1. The viewer faces the projection screen 2. The projection device 1 emits projection light, which enters the projection screen 2, is reflected by the projection screen 2, and then enters the viewer's eye, thus allowing the viewer to see the projected image. It should be noted that the projection screen 2 in this embodiment is a sound-emitting screen.

[0054] Figure 2 This is a top view of a sound-emitting screen provided in an embodiment of this application. Figure 3 This is a rear view structural diagram of a sound-generating plate provided in an embodiment of this application. Figure 2 As shown, the sound-emitting screen includes a sound-emitting plate 11 and an optical diaphragm 12. Addressing the problem of low left and right channel differentiation and poor sound emission in current sound-emitting screens, this application provides a screen sound emission scheme capable of multi-zone operation, achieving physical partitioning of the sound-emitting plate, thereby achieving better sound emission. Specifically, as shown... Figure 3 As shown, the sound-emitting plate includes a skin 111, an exciter 113, and a honeycomb core 114. Each honeycomb core 114 corresponds to an exciter 113, and each honeycomb core 114 corresponds to a sound-emitting area. Figure 3The device incorporates five exciters 113, aiming to improve the screen's sound output by increasing the number of exciters 111. However, this results in the sound emanating from all parts of the honeycomb sound panel emitting the same frequency under the same electrical signal intensity. This leads to an overly uniform tone (tone refers to the frequency of a sound; higher frequencies result in higher pitches, and vice versa) and poor sound quality due to a lack of depth. Even with software control to apply different voltages to different exciters 113, the poor differentiation between vibration areas prevents a satisfactory sound output. Therefore, further increasing the isolation of the sound-emitting areas is necessary to achieve a better sound effect.

[0055] Figure 4 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application. Considering that the honeycomb sound-generating plate is composed of a skin, a honeycomb core, and a composite skin, theoretically it is isotropic at all locations. When sound vibrates, it diffuses outwards from the excitation location. Therefore, to increase the isolation of the sound-generating area, it is necessary to filter out excess sound waves during transmission. Specifically, as shown... Figure 4 As shown, to filter out excess sound waves during transmission, it is considered to break the honeycomb core 114 at the partition boundary 115 of the sound-emitting area. The honeycomb sound-emitting panel is composited using hot pressing, and the side skins 111 are relatively thin. Therefore, during the composite process, the weakened strength due to the broken honeycomb core 114 at the partition boundary 115 will cause deformation at the partition boundary 115 after composite. After the optical film 12 is attached, the deformed area will affect the image display. Therefore, to maintain the strength at the partition boundary 115, it is considered to add absorbing material at the broken partition boundary 115. However, the absorbing material (sound-absorbing cotton, etc.) at the partition boundary 115 has inconsistent strength with the honeycomb core 114 in the sound-emitting area. During the hot pressing composite process of the honeycomb sound-emitting panel, the difference in material strength at the pressure point will still cause deformation of the composite panel surface.

[0056] Figure 5 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application. Figure 5 The structure of the honeycomb sound-emitting panel after adding foam material body 116 to the honeycomb core 114 during the composite process is shown. In order to maintain the strength of the partition boundary 115, the honeycomb core 114 is not broken, but the sound-absorbing foam material is filled at the partition boundary 115. After the composite is completed, a multi-partition structure can be realized, and exciters 113 are installed in each sound-emitting area to realize multi-partition sound emission.

[0057] However, due to the inability to control the filling thickness when filling the foam material, the surface of the honeycomb sound-emitting panel may have protrusions after lamination, and the surface of the optical film 12 may be uneven after lamination, affecting the viewing effect. Therefore, in order to maintain flatness, it is considered to replace the honeycomb sound-emitting panel with a solid structure and partition it through physical structure. However, this would cause the exciter 113 to be unable to drive the screen to produce sound.

[0058] Figure 6 This is a graph showing the performance of aluminum skin, fiberglass skin, and 1.4mm thick aluminum plate under an exciter according to an embodiment of this application. Figure 7 This is a graph showing the performance of aluminum skin and a 1.4mm thick aluminum plate under an exciter according to an embodiment of this application. The performance of the aluminum skin, fiberglass skin, and 1.4mm thick aluminum plate under an exciter was tested using a simulation model, and the test results are as follows. Figure 6 and Figure 7 As shown, 1.4mm aluminum skin was ultimately selected as the sound-generating material because single-layer aluminum skin has a high sound velocity, fewer peaks and valleys, a flatter curve, high sensitivity, and better sound generation effect.

[0059] While a single-layer aluminum skin can significantly reduce screen thickness, large-size single-layer aluminum skins have poor rigidity and are prone to deformation. Therefore, reinforcement structures are needed to improve flatness. Furthermore, to achieve a partitioning effect, this application considers combining the reinforcement structure with the partitioning.

[0060] Figure 8 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application.

[0061] like Figure 8 As shown, the sound-emitting screen provided in this embodiment includes a sound-emitting plate 11 and an optical diaphragm 12. The sound-emitting plate 11 includes a skin 111, a reinforcing structure 112, and an exciter 113. The skin 111 includes a first surface 1111 and a second surface 1112 facing each other; the reinforcing structure 112 is fixed to the first surface 1111; the reinforcing structure 112 includes a plurality of reinforcing plates 1121, which divide the first surface 1111 into a plurality of sound zones; the exciter 113 is fixed to the first surface 1111; an exciter 113 is provided in each sound zone; and the optical diaphragm 12 is fixed to the second surface 1112.

[0062] The aforementioned sound-emitting screen includes a sound-emitting plate 11 and an optical diaphragm 12. The sound-emitting plate 11 is used to emit sound, and the optical diaphragm 12 is used to display images. The sound-emitting plate 11 includes a skin 111, a reinforcing structure 112, and an exciter 113. The skin 111 includes a first surface 1111 and a second surface 1112 facing each other. The reinforcing structure 112 and the exciter 113 are both fixed to the first surface 1111, and the optical diaphragm 12 is fixed to the second surface 1112. The skin 111 is used to transfer energy from the exciter 113 to the entire sound-emitting plate 11 and amplify the sound through its own vibration. The reinforcing structure 112 includes multiple reinforcing plates 1121, which divide the first surface 1111 into multiple sound zones. Each sound zone is equipped with an exciter 113, which is used to convert external energy into mechanical vibration and drive the entire sound-emitting plate 11 to emit sound. This application uses a reinforcement structure 112, which includes multiple reinforcement plates 1121, to physically partition the sound-emitting plate 11, thereby isolating the sound generated in each partition, improving the isolation of the sound-emitting area, making the sound distinction more obvious, and the sound effect better.

[0063] Figure 9 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application.

[0064] In some embodiments of this application, such as Figure 9 As shown, the reinforcing structure 112 includes: a first reinforcing plate 1122, a second reinforcing plate 1123, a third reinforcing plate 1124, and a fourth reinforcing plate 1125. The first reinforcing plate 1122 extends along a first direction; the second reinforcing plate 1123 is connected to the first reinforcing plate 1122 and extends along a second direction, which intersects the first direction; the third reinforcing plate 1124 is connected to the first reinforcing plate 1122 and extends along a third direction, which intersects the first direction; the fourth reinforcing plate 1125 is connected to the first reinforcing plate 1122 and extends along a fourth direction, which intersects the first direction.

[0065] Wherein: the first reinforcing plate 1122 divides the first surface 1111 into a first region A and a second region B; the second reinforcing plate 1123 and the third reinforcing plate 1124 are located in the first region A and divide the first region A into a first sound zone A1, a second sound zone A2 and a third sound zone A3; the fourth reinforcing plate 1125 is located in the second region B and divides the second region B into a fourth sound zone B1 and a fifth sound zone B2.

[0066] like Figure 9As shown, the second reinforcing plate 1123, the third reinforcing plate 1124, and the fourth reinforcing plate 1125 are all connected to the first reinforcing plate 1122, and each forms a certain angle with the first reinforcing plate 1122 to separate the first region A and the second region B, thereby forming multiple sound zones. It should be noted that the angles formed by the second, third, and fourth directions with the first direction can be the same or different, and the specific setting method is not limited.

[0067] For example, the angles formed by the second, third, and fourth directions with the first direction are all the same.

[0068] For example, the second direction, the third direction and the first direction all form a first angle, and the fourth direction and the first direction form a second angle.

[0069] For example, the second direction forms a first angle with the first direction, the third direction forms a second angle with the first direction, and the fourth direction forms a third angle with the first direction.

[0070] It is understood that, considering that the second reinforcing plate 1123 and the third reinforcing plate 1124 divide the first region A into three acoustic zones, the second reinforcing plate 1123 and the third reinforcing plate 1124 cannot intersect in the two-dimensional plane region where the first surface 1111 is located. In a preferred embodiment, such as Figure 9 As shown, the first sound zone A1, the second sound zone A2, and the third sound zone A3 are arranged along the first direction, meaning that one end of the second reinforcing plate 1123 and the third reinforcing plate 1124 is connected to the first reinforcing plate 1122, and the other end is connected to the upper side of the skin 111. The fourth sound zone B1 and the fifth sound zone B2 are also arranged along the first direction, meaning that one end of the fourth reinforcing plate 1125 is connected to the first reinforcing plate 1122, and the other end is connected to the lower side of the skin 111. This design allows for good zoning of the skin 111, which is beneficial for improving the sound production effect.

[0071] Figure 10 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application.

[0072] In some embodiments of this application, such as Figure 10 As shown, the second reinforcing plate 1123, the third reinforcing plate 1124 and the fourth reinforcing plate 1125 are all perpendicular to the first reinforcing plate 1122.

[0073] Reference Figure 10In this embodiment, the second reinforcing plate 1123 forms a 90-degree angle with the extending direction of the first reinforcing plate 1122, the third reinforcing plate 1124 forms a 90-degree angle with the extending direction of the first reinforcing plate 1122, and the fourth reinforcing plate 1125 forms a 90-degree angle with the extending direction of the first reinforcing plate 1122. That is, the angles formed by the second, third, and fourth directions mentioned above with the first direction are all the same, all being 90 degrees. This arrangement allows for a more regular arrangement of the first sound zone A1, second sound zone A2, third sound zone A3, fourth sound zone B1, and fifth sound zone B2 formed by the first surface 1111, which helps to enhance the isolation of multiple sound zones, making the sound distinction more obvious and the sound effect better.

[0074] Figure 11 This is a rear view structural diagram of another sound-generating plate provided in an embodiment of this application.

[0075] In some embodiments of this application, such as Figure 11 As shown, the skin 111 includes: a first side 1113 and a second side 1114, the second side 1114 being connected to the first side 1113, that is, the first side 1113 and the second side 1114 being two adjacent sides of the skin 111.

[0076] Wherein: the first reinforcing plate 1122 is parallel to the first side 1113, and the second reinforcing plate 1123, the third reinforcing plate 1124 and the fourth reinforcing plate 1125 are all parallel to the second side 1114.

[0077] Reference Figure 11 The skin 111 is a rectangular structure with adjacent first side 1113 and second side 1114. The first side 1113 is... Figure 11 The top side and the second side 1114 are Figure 11 The right side of the first reinforcing plate 1122 extends parallel to the first side 1113, while the extension directions of the second reinforcing plate 1123, third reinforcing plate 1124, and fourth reinforcing plate 1125 are all parallel to the second side 1114. Since the first side 1113 and the second side 1114 are perpendicular, the second reinforcing plate 1123, third reinforcing plate 1124, and fourth reinforcing plate 1125 are all perpendicular to the first reinforcing plate 1122. Thus, the first sound zone A1, second sound zone A2, third sound zone A3, fourth sound zone B1, and fifth sound zone B2 formed by the first surface 1111 are all rectangular structures. The shape and arrangement of each sound zone are more regular, which helps to further enhance the isolation of multiple sound zones, improve sound differentiation, and enhance the sound production effect.

[0078] In one embodiment of this application, reference is made to... Figure 11The areas of the first sound zone A1, the second sound zone A2, and the third sound zone A3 can be the same, and the areas of the fourth sound zone B1 and the fifth sound zone B2 can also be the same. That is, the first surface 1111 is divided by the reinforcing structure 112 and has an axially symmetrical structure, which is conducive to further improving the sound production effect.

[0079] Figure 12 This is a schematic diagram of a sound zone distribution provided in an embodiment of this application. Figure 13 This is a schematic diagram of another acoustic zone distribution provided in an embodiment of this application.

[0080] In some embodiments of this application, such as Figure 12 As shown, the first audio zone A1 is the left channel zone, the second audio zone A2 is the center channel zone for human voices, the third audio zone A3 is the right channel zone, the fourth audio zone B1 is the left surround zone, and the fifth audio zone B2 is the right surround zone.

[0081] Or, such as Figure 13 As shown, the first audio zone A1 is the left surround zone, the second audio zone A2 is the center vocal zone, the third audio zone A3 is the right surround zone, the fourth audio zone B1 is the left channel zone, and the fifth audio zone B2 is the right channel zone.

[0082] The left and right channels form the foundation of stereo sound. The left channel presents sound elements from the left, and the right channel presents sound elements from the right; together, they create the width of the sound field. The center channel for vocals enhances the focus of the sound and its positioning in the center of the image. The left and right surround channels create a sense of immersion and spatial dimension, handling background music, ambient sounds, and some dynamic sound effects. The left, right, and center channels form the front sound field, while the left and right surround channels expand the rear space. By rationally allocating and coordinating these sound zones, a good sound effect can be achieved.

[0083] In some embodiments of this application, the skin 111 is an aluminum plate. The thickness of the skin 111 is 1.3mm-1.4mm. For example, the thickness of the skin 111 can be 1.3mm, 1.31mm, 1.32mm, 1.33mm, 1.34mm, 1.35mm, 1.36mm, 1.37mm, 1.38mm, 1.39mm, 1.4mm, etc., and is not specifically limited. The single-layer aluminum skin 111 in the embodiments of this application has a small thickness, which can achieve a significant reduction in the thickness of the sound-emitting screen, which is beneficial to simplifying the overall thickness of the screen and achieving an ultra-thin, zero-wall-attachment effect.

[0084] Since single-layer aluminum skin has poor rigidity and is prone to deformation, this embodiment of the application uses a reinforcing structure 112 to reinforce it, improve the flatness of the skin 111, and achieve sound zoning effect.

[0085] Figure 14This is a rear view structural diagram of a sound-emitting plate with a flexible component provided in an embodiment of this application.

[0086] In some embodiments of this application, such as Figure 14 As shown, the sound-emitting plate 11 also includes a flexible member 13, which is fixed to the periphery of the first surface 1111.

[0087] When the exciter 113 drives the sound-emitting plate 11 to vibrate, in order to minimize the influence of the fixed structure of the sound-emitting screen on the vibration of the sound-emitting plate 11 and realize the free vibration of the sound-emitting plate 11 in space, the structural design needs to reduce the obstruction of the support structure of the sound-emitting screen or other objects on the vibration of the sound-emitting plate 11, so that the boundary of the sound-emitting plate 11 realizes the mode of free boundary vibration and achieves a wider frequency response.

[0088] Based on the above considerations, the reinforcing structure 112 in this embodiment is rigidly connected to the skin 111, which can maximize the cancellation of vibration at the boundary of the skin 111 during vibration. Since the sound-emitting screen is hung between itself and the wall, the sound-emitting panel 11 will vibrate back and forth. Therefore, this embodiment provides a flexible member 13 at the perimeter of the first surface 1111 of the skin 111. The flexible member 13 can be made of damping materials such as butyl rubber or polyurethane foam, which have a certain degree of adhesion, enabling a flexible connection with the skin 111 and providing a certain degree of deformation capability. When the exciter 113 drives the sound-emitting panel 11 to vibrate and produce sound, the overall back-and-forth movement of the sound-emitting panel 111 and the free vibration of its boundaries are not hindered by the reinforcing structure 112, allowing the sound-emitting panel 11 to vibrate within the gap between itself and the wall, thereby improving the sound-emitting effect of the sound-emitting screen and enhancing the user experience.

[0089] In some embodiments of this application, such as Figure 14 As shown, the second reinforcing plate 1123 and the third reinforcing plate 1124 are provided with multiple mounting holes 14 on the side opposite to the first side 1111, and the arrangement direction of the multiple mounting holes 14 is parallel to the second side 1114.

[0090] Reference Figure 14 In specific applications, the sound-emitting screen of this embodiment is hung on a wall. A corresponding mounting position is provided on the wall, which cooperates with the mounting holes 14 on the second reinforcing plate 1123 and the third reinforcing plate 1124 to achieve the installation and fixation of the sound-emitting screen. Both the second reinforcing plate 1123 and the third reinforcing plate 1124 have multiple mounting holes 14, which are arranged along the length of the reinforcing plate. It can be understood that when it is necessary to adjust the installation height of the sound-emitting screen, the corresponding mounting hole 14 can be selected to hang it on the mounting position on the wall to meet the specific height requirement for installation of the sound-emitting screen.

[0091] It should be noted that, in application, the sound-emitting screen is fixed in the first position, and the projection device 1 is placed in the second position, so that the projected image matches the projection screen. The projection device 1 includes a laser light source, an optical engine, a lens, and a projection medium. The laser light source provides illumination for the optical engine, which modulates the light beam and outputs it to the lens for imaging, projecting it onto the projection medium to form a projected image.

[0092] In some embodiments, the laser source of the projection device 1 includes a laser assembly and an optical lens assembly. The beam emitted by the laser assembly can pass through the optical lens assembly to provide illumination for the optical engine. For example, the optical lens assembly requires a high level of environmental cleanliness and airtightness; while the chamber in which the laser assembly is installed can be sealed with a lower level of dustproof sealing to reduce sealing costs.

[0093] In some embodiments, the optical engine of the projection device may include a heat dissipation system, a circuit control system, etc. It should be noted that in some embodiments, the light-emitting component of the projector may also be implemented using an LED (Light Emitting Diode) light source.

[0094] In some embodiments, the laser light source in the projection device may include independently configured blue laser, red laser and green laser. The projection device may also be called a three-color projection device. The blue laser, red laser and green laser are all modular lightweight (Mirai Console Loader, MCL) packaged lasers, which are small in size and facilitate compact arrangement of the optical path.

[0095] In some embodiments, the projection device may be configured with a camera for working in conjunction with the projection device to adjust and control the projection process. For example, the camera configured with the projection device may be specifically implemented as a 3D camera or a binocular camera; when the camera is implemented as a binocular camera, it specifically includes a left camera and a right camera; the binocular camera can acquire the image and playback content presented on the screen corresponding to the projection device, i.e., the projection surface, which is projected by the optical engine built into the projection device.

[0096] When the projection device moves, its projection angle and distance to the projection surface change, which will cause the projected image to be distorted, and the projected image will be displayed as a trapezoidal image or other distorted image; the projection device controller can achieve automatic trapezoidal correction based on the image captured by the camera, by coupling the angle between the optical engine and the projection surface and the correct display of the projected image.

[0097] Figure 15 This is a schematic diagram of the structure of an optical film provided for an embodiment of the application. In some embodiments, such as... Figure 15As shown, the sound-emitting screen includes a display layer, namely, an imaging layer that carries optical films. From the user's viewing direction, i.e. Figure 15 From left to right, the structure comprises: surface layer 01, coloring layer 02, diffusion layer 03, Fresnel microlens layer 04, reflective layer 05, and support structure 06. During projection, light emitted from the ultra-short throw projector is refracted through the surface of the optical film and enters the interior of the optical film. After being reflected by the Fresnel microlens layer 04, it exits from the surface layer 01 and finally enters the human eye, providing passive imaging. The back of the Fresnel microlens layer 04 is coated with an aluminum reflective layer. The optical film displays the projected image. By projecting the desired video or audio image onto the sound-emitting screen, the user can directly see the same video resource played on the electronic display screen (such as a television, LCD monitor, or mobile phone) on the surface layer 01.

[0098] Obviously, those skilled in the art can make various modifications and variations to the embodiments of this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application also intends to include these modifications and variations.

Claims

1. A sound-emitting screen, characterized in that, include: Sound-emitting plate, including: Skin, the skin including opposing first and second surfaces; A reinforcing structure is fixed to the first surface; the reinforcing structure includes multiple reinforcing plates, which divide the first surface into multiple acoustic zones; and An exciter is fixed to the first surface; each of the acoustic zones is provided with an exciter; an optical diaphragm is fixed to the second surface.

2. The sound-emitting screen according to claim 1, characterized in that, The reinforcing structure includes: The first reinforcing plate extends along the first direction; A second reinforcing plate is connected to the first reinforcing plate, and the second reinforcing plate extends along a second direction, which intersects with the first direction; A third reinforcing plate is connected to the first reinforcing plate, the third reinforcing plate extending along a third direction, the third direction intersecting the first direction; and A fourth reinforcing plate is connected to the first reinforcing plate, and the fourth reinforcing plate extends along a fourth direction, which intersects with the first direction; Wherein: the first reinforcing plate divides the first surface into a first region and a second region; the second reinforcing plate and the third reinforcing plate are located in the first region and divide the first region into a first sound zone, a second sound zone and a third sound zone; the fourth reinforcing plate is located in the second region and divides the second region into a fourth sound zone and a fifth sound zone.

3. The sound-emitting screen according to claim 2, characterized in that, The second reinforcing plate, the third reinforcing plate, and the fourth reinforcing plate are all perpendicular to the first reinforcing plate.

4. The sound-emitting screen according to claim 3, characterized in that, The skin includes: First side; and The second side is connected to the first side; Wherein: the first reinforcing plate is parallel to the first side, and the second, third and fourth reinforcing plates are all parallel to the second side.

5. The sound-emitting screen according to claim 4, characterized in that, The first sound zone is the left channel zone, the second sound zone is the center channel zone for human voice, the third sound zone is the right channel zone, the fourth sound zone is the left surround zone, and the fifth sound zone is the right surround zone. Alternatively, the first sound zone is the left surround sound zone, the second sound zone is the center sound zone, the third sound zone is the right surround sound zone, the fourth sound zone is the left channel zone, and the fifth sound zone is the right channel zone.

6. The sound-emitting screen according to claim 1, characterized in that, The skin is made of aluminum sheet.

7. The sound-emitting screen according to claim 6, characterized in that, The thickness of the skin is 1.3mm-1.4mm.

8. The sound-emitting screen according to claim 1, characterized in that, The sound-emitting plate also includes a flexible element, which is fixed to the periphery of the first surface.

9. The sound-emitting screen according to claim 4, characterized in that, Both the second reinforcing plate and the third reinforcing plate have multiple mounting holes on the side opposite to the first surface, and the arrangement direction of the multiple mounting holes is parallel to the second side.

10. A projection system, characterized in that, include: Projection equipment; and A projection screen, wherein the projection screen is the sound-emitting screen as described in any one of claims 1-9.

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