Projection screen and projection system

Abstract

The invention provides a projection screen and a projection system, and the projection screen comprises a display diaphragm which is provided with a projection light-receiving surface; the screen frame comprises at least two first borders and at least two second borders, the first borders and the second borders are alternately arranged to surround the periphery of the display membrane, the length of the second borders is larger than that of the first borders, the second borders are foldable borders, and the second borders comprise a plurality of border sections; each sound production unit comprises an exciter and a sound production plate, the sound production plate is arranged on one of the first frame and the second frame and located on the side deviating from the projection light receiving surface, the exciter is arranged on the side, deviating from the display diaphragm, of the sound production plate and used for driving the sound production plate to vibrate and produce sound, and a gap is formed between the sound production plate and the display diaphragm. The problem that a large-size sound production screen is difficult to enter a home is solved, convenient home entry is achieved, and the product assembling time is shortened.

Description

Technical Field

[0001] The present invention relates to the field of projection technology, and in particular to a projection screen and a projection system. Background Art

[0002] With the continuous development of society, people's pursuits are also constantly changing, and projection display systems are increasingly used in people's work and life.

[0003] At present, the sound screen of laser TV is composed of a sound board, an exciter, a diaphragm, and a frame. The sound effect is mainly achieved by vibrating the sound board through the exciter.

[0004] However, existing sound screens larger than 100 inches are limited by screen size and cannot be easily installed in homes. Installation is time-consuming and labor-intensive, assembly is cumbersome and difficult to operate, and the user experience is poor. Summary of the Invention

[0005] The main purpose of the present invention is to provide a projection screen and a projection system, which solves the problem that large-sized sound-emitting screens are difficult to install in homes, realizes convenient installation in homes, and shortens the assembly time of the product.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a projection screen, comprising:

[0007] A display film, the display film having a projection light receiving surface;

[0008] A screen frame, the screen frame including at least two first frames and a second frame, the first frames and the second frames being alternately arranged to surround the periphery of the display film, wherein the second frames are longer than the first frames, are foldable, and include a plurality of frame segments;

[0009] At least two sound-emitting units, each sound-emitting unit includes an exciter and a sound-emitting plate. The sound-emitting plate is arranged on one of the first frame and the second frame and is located on the side away from the projection light-receiving surface. The exciter is arranged on the side of the sound-emitting plate away from the display diaphragm and is used to drive the sound-emitting plate to vibrate and produce sound. There is a gap between the sound-emitting plate and the display diaphragm.

[0010] The beneficial effects of the present invention are as follows: through the arrangement of the screen frame and the sound unit, since the screen frame is foldable, multiple sound units can be folded together, which can reduce the volume of the projection screen when it enters the home, achieve convenient home installation, reduce transportation and / or home installation volume, optimize the size of the projection screen, and improve the problem of large-sized projection screens with sound units entering the home. At the same time, this solution integrates the various structures, assembles the various structures in the factory, and then performs simple assembly after arriving at the user's home, making the overall installation of the projection screen more convenient and easy to operate, shortening the product assembly time, significantly reducing labor intensity, increasing product influence, and improving user experience.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] In some optional embodiments, a tensioning unit is further included, which includes a pull rod and a tensioning member. The pull rod is connected to the end of the display film, and the tensioning member is movably arranged at the end of the screen frame. The end of the tensioning member abuts against the pull rod to drive the pull rod to move through the movement of the tensioning member.

[0013] In some optional embodiments, the movement direction of the tensioning member matches the movement direction of the pull rod; and / or,

[0014] The moving direction of the tensioning member matches the stretching direction of the display film.

[0015] In some optional embodiments, the sound-emitting unit further includes a supporting frame, and the supporting frame is disposed on the second frame;

[0016] The sounding board is arranged on a supporting frame, and the supporting frame is used for supporting the sounding board and the exciter.

[0017] In some optional embodiments, the sound generating unit further includes a cover plate, opposite ends of the cover plate are respectively connected to the support frame, and the cover plate is arranged on a side of the actuator away from the display membrane; and / or,

[0018] The cover plate extends along the length direction of the first frame.

[0019] In some optional embodiments, there are multiple exciters, and the multiple exciters are arranged at intervals along the extension direction of the cover plate.

[0020] In some optional embodiments, a connecting rod and a slide groove are provided on the second frame, the slide groove is located in the plurality of frame segments, and the connecting rod matches the slide groove and moves in the slide groove;

[0021] The connecting rod is constructed so that when two adjacent frame segments are folded, the connecting rod is located on one of the two frame segments; when the two adjacent frame segments are unfolded, the connecting rod moves in the slide groove so that part of the connecting rod is located on one of the two frame segments and the other part of the connecting rod is located on the other of the two frame segments.

[0022] In some optional embodiments, the device further comprises a hinge unit, at least two sound-generating units are located on opposite sides of the hinge unit, and the hinge unit comprises a first hinge unit and a second hinge unit;

[0023] The screen frame further includes a plurality of vertical beams, the plurality of vertical beams being located in the middle of the display film, the first hinge unit being located between the plurality of vertical beams so that two adjacent vertical beams can be folded, and the second hinge unit being located between the two frame segments so that the second frame can be folded;

[0024] The rotation axes of the first hinge unit and the second hinge unit are parallel to each other.

[0025] In a second aspect, the present invention further provides a projection screen, comprising:

[0026] A display diaphragm having a projection light-receiving surface;

[0027] A screen frame that is foldably arranged;

[0028] A sound-emitting unit, the sound-emitting unit includes an exciter and a sounding board, the sounding board is arranged on the screen frame, and the exciter is arranged on the side of the sounding board away from the display diaphragm for driving the sounding board to vibrate and emit sound.

[0029] In a third aspect, the present invention further provides a projection system, comprising a projection device and the above-mentioned projection screen, and the projection device is used for projecting a projection picture onto the projection screen.

[0030] The projection screen and the projection system provided by the present invention, the projection system includes a projection device and a projection screen, and the projection device is used for projecting a projection picture onto the projection screen; wherein, the projection screen includes: a display diaphragm having a projection light-receiving surface; a screen frame, the screen frame includes at least two first side frames and second side frames, the first side frames and the second side frames are arranged alternately to surround the outer periphery of the display diaphragm, wherein the length of the second side frame is greater than the length of the first side frame, and the second side frame is a foldable side frame, and the second side frame includes a plurality of side frame segments; at least two sound-emitting units, the sound-emitting unit includes an exciter and a sounding board, the sounding board is arranged on one of the first side frame and the second side frame and is located on the side away from the projection light-receiving surface, and the exciter is arranged on the side of the sounding board away from the display diaphragm for driving the sounding board to vibrate and emit sound, and there is a gap between the sounding board and the display diaphragm.

[0031] Through the arrangement of the screen frame and the sound-emitting unit, since the screen frame is foldable, it can meet the requirement that multiple sound-emitting units can be folded, which can reduce the entry volume of the projection screen, realize convenient entry, reduce the transportation and / or entry volume, optimize the size of the projection screen, and improve the problem of the entry of a large-sized projection screen with a sound-emitting unit. At the same time, this solution integrates various structures, assembles various structures in the factory, and then performs simple assembly at the user's home, making the overall installation of the projection screen more convenient and easy to operate, shortening the assembly time of the product, greatly reducing the labor intensity, enhancing the product influence, and improving the user experience. Description of the Drawings

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following briefly introduces the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0033] Figure 1 Structural schematic diagram of the projection screen from the first perspective provided by the embodiment of the present application;

[0034] Figure 2 Structural schematic diagram of the projection screen from the second perspective provided by the embodiment of the present application;

[0035] Figure 3 Structural schematic diagram of the display diaphragm in the projection screen provided by the embodiment of the present application;

[0036] Figure 4 Assembly drawing of the screen frame and the sound - generating unit in the projection screen provided by the embodiment of the present application;

[0037] Figure 5 Structural schematic diagram of the projection screen from the third perspective provided by the embodiment of the present application;

[0038] Figure 6 For Figure 5 Partial enlarged view at I in

[0039] Figure 7 First - state schematic diagram of the screen frame in the projection screen provided by the embodiment of the present application;

[0040] Figure 8 Second - state schematic diagram of the screen frame in the projection screen provided by the embodiment of the present application;

[0041] Figure 9 Assembly schematic diagram of the display diaphragm and the tensioning unit from the first perspective in the projection screen provided by the embodiment of the present application;

[0042] Figure 10 Assembly schematic diagram of the display diaphragm and the tensioning unit from the second perspective in the projection screen provided by the embodiment of the present application;

[0043] Figure 11 Structural schematic diagram of the sound - generating unit in the projection screen provided by the embodiment of the present application;

[0044] Figure 12 Structural schematic diagram of the connecting rod in the first state in the projection screen provided by the embodiment of the present application;

[0045] Figure 13 For Figure 12 Partial enlarged view at II in

[0046] Figure 14 Schematic diagram of the structure of the connecting rod in the second state of the projection screen provided by the embodiment of the present application;

[0047] Figure 15 Schematic diagram of the first state of the projection screen provided by the embodiment of the present application;

[0048] Figure 16 Schematic diagram of the structure of the projection screen provided by the embodiment of the present application from the first perspective in the second state;

[0049] Figure 17 Schematic diagram of the structure of the projection screen provided by the embodiment of the present application from the second perspective in the second state.

[0050] Description of the reference numerals:

[0051] 100 - Projection screen;

[0052] 110 - Display film;

[0053] 111 - Film body;

[0054] 112 - Synthetic cloth;

[0055] 120 - Screen frame;

[0056] 121 - First border;

[0057] 122 - Second border;

[0058] 123 - Vertical beam;

[0059] 130 - Sound generating unit;

[0060] 131 - Excitator;

[0061] 132 - Sound generating plate;

[0062] 133 - Support frame;

[0063] 134 - Cover plate;

[0064] 140 - Tensioning unit;

[0065] 141 - Pull rod;

[0066] 142 - Tensioning member;

[0067] 150 - Connecting rod;

[0068] 160 - Slide groove;

[0069] 170 - Hinge unit;

[0070] 171 - First hinge unit;

[0071] 172 - The second hinge unit. Detailed implementation manner

[0072] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention. All other embodiments obtained shall fall within the protection scope of the present invention. Without conflict, the following embodiments and the features in the embodiments may be combined with each other.

[0073] In the present invention, unless otherwise clearly defined and limited, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal connection of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention may be understood according to specific circumstances.

[0074] In the present invention, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0076] Currently, the sound - emitting screen of a laser TV consists of a sound - emitting plate, an exciter, a diaphragm, and a frame member. The sound - emitting effect is mainly achieved by the exciter vibrating the sound - emitting plate. However, for existing sound - emitting screens larger than 100 inches, due to the screen size limitation, it is impossible to conveniently enter the household. The installation is time - consuming and laborious, the assembly is cumbersome and not easy to operate, resulting in a poor user experience.

[0077] In order to overcome the defects in the prior art, the projection screen and projection system provided by the present invention, through the setting of the screen frame and the sound - emitting unit, since the screen frame is foldable, multiple sound - emitting units can be folded, which can reduce the household - entry volume of the projection screen, achieve convenient household entry, reduce the transportation and / or household - entry volume, optimize the projection screen size, and improve the problem of household entry of large - size projection screens with sound - emitting units. At the same time, this solution integrates various structures, assembles various structures in the factory, and then performs simple assembly at the user's home, making the overall installation of the projection screen more convenient and easy to operate, shortening the assembly time of the product, greatly reducing the labor intensity, enhancing the product influence, and improving the user experience.

[0078] The content of the present invention will be described in detail below with reference to the accompanying drawings, so that those skilled in the art can understand the content of the present invention more clearly and in detail.

[0079] Figure 1 It is a schematic structural diagram of the first perspective of the projection screen provided by an embodiment of the present application. Figure 2 It is a schematic structural diagram of the second perspective of the projection screen provided by an embodiment of the present application. Figure 3 It is a schematic structural diagram of the display diaphragm in the projection screen provided by an embodiment of the present application. Figure 4 It is an assembly drawing of the screen frame and the sound - emitting unit in the projection screen provided by an embodiment of the present application. Figure 5 It is a schematic structural diagram of the third perspective of the projection screen provided by an embodiment of the present application. Figure 6 For Figure ......... The partial enlarged view at I in ​ It is a schematic diagram of the first state of the screen frame in the projection screen provided by an embodiment of the present application. ​ It is a schematic diagram of the second state of the screen frame in the projection screen provided by an embodiment of the present application.

[0080] As ​ shown, an embodiment of the present application provides a projection screen 100, including:

[0081] Sub - display diaphragm 110, the display diaphragm 110 has a projection light - receiving surface;

[0082] It can be understood that the front surface of the display diaphragm 110 is the projection light - receiving surface.

[0083] The screen frame 120 includes at least two first frames 121 and a second frame 122. The first frames 121 and the second frames 122 are alternately arranged to surround the outer periphery of the display film 110. The second frames 122 are longer than the first frames 121, are foldable, and include multiple frame segments.

[0084] At least two sound-emitting units 130, each of which includes an exciter 131 and a sound-emitting plate 132. The sound-emitting plate 132 is arranged on one of the first frame 121 and the second frame 122, and is located on the side away from the projection light-receiving surface. The exciter 131 is arranged on the side of the sound-emitting plate 132 away from the display film 110, and is used to drive the sound-emitting plate 132 to vibrate and produce sound. There is a gap between the sound-emitting plate 132 and the display film 110.

[0085] Through the above-mentioned arrangement, that is, through the arrangement of the screen frame 120 and the sound unit 130, since the screen frame 120 is foldable, and thus the multiple sound units 130 can be folded, the volume of the projection screen 100 entering the home can be reduced, making it convenient to enter the home, reducing the transportation and / or entry volume, optimizing the size of the projection screen 100, and improving the problem of entering the home of a large-sized projection screen 100 with a sound unit 130. At the same time, this solution integrates the various structures, assembles the various structures in the factory, and then performs simple assembly after arriving at the user's home, making the overall installation of the projection screen 100 more convenient and easy to operate, shortening the assembly time of the product, significantly reducing the labor intensity, increasing the product's influence, and improving the user experience.

[0086] It should be noted that each structure is described in detail below.

[0087] It should be noted that the screen frame 120 is generally a frame structure, and the screen frame 120 encloses a rectangular or square hollow area, which can be used to place the display film 110, and the screen frame 120 can surround the edge of the display film 110 to provide protection for the display film 110, and the screen frame 120 and the display film 110 are connected and tensioned by a deformable or displaceable tensioning module.

[0088] In some examples, the screen frame 120 may be a metal member, and its material may include one or more of copper, iron, aluminum, tin, and lead.

[0089] In other examples, the screen frame 120 may be made of plastic.

[0090] It should be noted that the embodiment of the present application does not impose any additional restrictions on the specific material of the screen frame 120 .

[0091] Of course, during production and manufacturing, on the premise of ensuring strength, the screen frame 120 can also be made of steel plates, plastics or composite materials.

[0092] Among them, in order to facilitate the entry and quick assembly of the projection screen 100, the screen frame 120 can be composed of a plurality of first side frames 121 and second side frames 122 assembled with each other. Generally, considering the convenience of installation, it can be composed of a plurality of first side frames 121 and second side frames 122 assembled. However, in practice, it can be determined according to the size, and there is no excessive limitation here.

[0093] It should be noted that the second side frame 122 can be a long side frame, and the first side frame 121 can be a short side frame. The first side frame 121, the second side frame 122, another first side frame 121, and another second side frame 122 are connected in sequence to enclose the screen frame 120.

[0094] It should be noted that the exciter 131 is arranged on the sound - emitting plate 132, which can drive the sound - emitting plate 132 to vibrate and generate sound. The acoustic effect is good, and it is easy to achieve the integration of sound and picture.

[0095] In some examples, the exciter 131 can be any one or more of an electromagnetic exciter 131, a magnetostrictive exciter 131, and a piezoelectric exciter 131, with high applicability.

[0096] In some embodiments, the exciter 131 can also include a magnetic - field generating unit (such as a magnet) and a vibrating coil. The magnetic - field generating unit is used to generate a magnetic field. By inputting a continuously changing current into the vibrating coil, the acting force of the vibrating coil in the magnetic field generated by the magnetic - field generating unit changes continuously, thereby generating vibration.

[0097] In addition, it should be noted that considering the weight of the exciter 131 itself, by arranging the exciter 131 on the sound - emitting plate 132, on the basis of ensuring sound generation, the installation stability of the exciter 131 can also be improved.

[0098] In some embodiments, the gap range between the sound - emitting plate 132 and the display diaphragm 110 can be between 3 mm and 5 mm. The specific value can be adjusted according to the actual situation.

[0099] It should be noted that among them, the second side frame 122 can be foldably arranged. At this time, the sound - generating unit 130 can be pre - connected and installed with the screen frame 120, and can move foldably when the second side frame 122 is folded. It is convenient for the scattered frame structure to be folded. On the one hand, it reduces the transportation and or entry volume, and on the other hand, it can quickly assemble the folded screen frame 120, improving the product influence.

[0100] In some other embodiments, both the first frame 121 and the second frame 122 can be foldably arranged. At this time, the sound generating unit 130 and the screen frame 120 have an independent loudness structure. After the screen frame 120 is installed, the sound generating unit 130 is installed.

[0101] ​ This is a schematic assembly view of the display diaphragm and the tensioning unit from the first perspective in the projection screen provided by the embodiment of the present application. ​ This is a schematic assembly view of the display diaphragm and the tensioning unit from the second perspective in the projection screen provided by the embodiment of the present application.

[0102] As ​ shown, in some alternative embodiments, it further includes a tensioning unit 140. The tensioning unit 140 includes a pull rod 141 and a tensioning member 142. The pull rod 141 is connected to the end of the display diaphragm 110, and the tensioning member 142 is movably arranged at the end of the screen frame 120. The end of the tensioning member 142 abuts against the pull rod 141 to drive the movement of the pull rod 141 through the movement of the tensioning member 142.

[0103] It should be noted that the pull rod 141 is connected to the end of the display diaphragm 110. By pulling or pushing the pull rod 141, the movement of the display diaphragm 110 can be driven, so that the display diaphragm 110 is in a tensioned state.

[0104] It should be noted that the display diaphragm 110 usually consists of a hard layer, a Fresnel structure layer, a projection layer, etc., has a certain strength and stiffness, and can have a certain verticality in the vertical free hanging state so that the display diaphragm 110 looks flat. However, due to still having a certain softness, without support or being interfered by external forces, the display diaphragm 110 still cannot meet the flatness requirements for display. If the screen is not flat, it will cause deformation, blurring, uneven brightness, or other degradation problems when the laser projection image is displayed.

[0105] In order to flatten the display diaphragm 110, in some alternative embodiments, the display diaphragm 110 includes a diaphragm body 111 and a synthetic cloth 112 that are mutually adhered.

[0106] Generally, the diaphragm body 111 is made of a hard and straight material, and the synthetic cloth 112 generally has characteristics such as inelasticity, ultra-thinness, denseness, and high strength. When the synthetic cloth 112 and the diaphragm body 111 are adhered, an integral structure can be formed between the two, so as to facilitate the transmission of force and enable the diaphragm body 111 to be stretched following the deformation of the synthetic cloth 112.

[0107] Specifically, the synthetic fabric 112 can generally be a soft fabric, so that the synthetic fabric 112 can better transmit the force when stretched, and has a relatively stable property and can adapt to a wide range of environments, for example, it can maintain good flatness and reliability in an ambient temperature range of -10°C to 40°C.

[0108] It should be noted that after the screen frame 120 is assembled, when the display film 110 is assembled, a pull rod 141 with holes is inserted into the synthetic cloth 112. The holes of the synthetic cloth 112 and the pull rod 141 correspond to each other. At the same time, there are threaded holes at corresponding positions on the screen frame 120. After the threaded holes of the synthetic cloth 112, the pull rod 141 and the screen frame 120 are aligned, the tensioning member 142 is installed on the screen frame 120. By designing the stroke size of the synthetic cloth 112, the display film 110 is continuously tightened, thereby completing the fixation of the entire display film 110.

[0109] It can be understood that the pull rod 141 can move relative to the screen frame 120. Therefore, when one end of the pull rod 141 is fixed to the edge of the synthetic cloth 112 and the other end is connected to the tensioning member 142 surrounded by the screen frame 120, the synthetic cloth 112 can be stretched by the movement of the tensioning member 142, forcing the synthetic cloth 112 to open into a flat stretched state, and then the diaphragm body 111 is in a stretched state, so that the display diaphragm 110 is flat.

[0110] In some optional embodiments, the moving direction of the tensioning member 142 matches the moving direction of the pull rod 141; and / or,

[0111] The moving direction of the tensioning member 142 matches the stretching direction of the display film 110 .

[0112] It should be noted that the tensioning member 142 drives the display film 110 in a stretched state, which can be divided into forward installation and reverse installation. Specifically, the tensioning member 142 is located on the front of the display film 110 and can be configured to drive the display film 110 to stretch toward the outer edge of the screen frame 120 on the front.

[0113] Of course, the tensioning member 142 is located on the back of the display film 110 and can be configured to move the display film 110 around the outer edge of the screen frame 120 and stretch toward the back side of the screen frame 120 to achieve reverse installation.

[0114] In addition, it should be noted that, no matter it is installed upright or reversed, as long as the display film 110 can be stretched by the tensioning member 142 and the screen is flat, the specific embodiment of the present application does not limit it too much.

[0115] In addition, it should be noted that the moving direction of the tensioning member 142 and the stretching direction of the display film 110 are kept parallel or nearly parallel.

[0116] This can bring two benefits: on the one hand, it can reduce the overall volume and thickness of the projection screen 100. When the tensioning member 142 moves, the moving direction is within the plane where the display diaphragm 110 is located or has a small angle with this plane. Therefore, the deformation amount in the thickness direction of the projection screen 100 is small, and the thickness of the projection screen 100 can be effectively reduced; on the other hand, when the moving direction of the tensioning member 142 is parallel to the stretching direction of the display diaphragm 110, it is also easy to make the display diaphragm 110 stretch and extend along its own plane.

[0117] ​ It is a schematic structural diagram of the sound - generating unit in the projection screen provided by the embodiment of the present application. As ​ shown, in some alternative embodiments, the sound - generating unit 130 further includes a support frame 133, and the support frame 133 is arranged on the second frame 122;

[0118] The sounding board 132 is arranged on the support frame 133, and the support frame 133 is used to support the sounding board 132 and the exciter 131.

[0119] It should be noted that the setting of the support frame 133 is mainly used to support or install the sounding board 132 and the exciter 131, making the installation of the sounding board 132 and the exciter 131 more stable. At the same time, it can make the sounding board 132 and the exciter 131 as a whole, providing convenience during assembly or when entering the household.

[0120] In some embodiments, the support frame 133 and the end of the second frame 122 can be connected by a detachable connection method or a fixed connection method.

[0121] Such as bolt, buckle or hanging connection. Specifically, the embodiments of the present application do not limit this too much here.

[0122] In some embodiments, the material of the support frame 133 can be the same as or different from the material of the screen frame 120, and this is not limited too much here.

[0123] As ​ shown, in some alternative embodiments, the sound - generating unit 130 further includes a cover plate 134. The two opposite ends of the cover plate 134 are respectively connected to the support frame 133, and the cover plate 134 is arranged on the side of the exciter 131 away from the display diaphragm 110; and / or,

[0124] The cover plate 134 extends along the length direction of the first frame 121.

[0125] It should be noted that the setting of the cover plate 134, on the one hand, improves the installation stability of the exciter 131, and on the other hand, can improve the aesthetics of the sound - generating unit 130.

[0126] In some embodiments, the exciter 131 is fixedly installed with the cover plate 134 in the form of dispensing glue. Of course, other connection methods can also be used.

[0127] As ​ shown, in some alternative embodiments, there are multiple exciters 131, and the multiple exciters 131 are arranged at intervals along the extension direction of the cover plate 134.

[0128] It should be noted that the arrangement of the multiple exciters 131 can improve the vibration sound generation effect, making the sound generation effect better. When the multiple exciters 131 are activated, the sound generating plate 132 vibrates to generate sound.

[0129] Different exciters 131 can belong to different sound channels, and the exciters 131 of different sound channels can vibrate independently.

[0130] ​ FIG. is a schematic structural diagram of the first state of the connecting rod in the projection screen provided by the embodiment of the present application. ​ is ​ the partial enlarged view at II in ​ FIG. is a schematic structural diagram of the second state of the connecting rod in the projection screen provided by the embodiment of the present application.

[0131] As ​ shown, in some alternative embodiments, a connecting rod 150 and a sliding groove 160 are provided on the second frame 122. The sliding groove 160 is located within a plurality of frame segments. The connecting rod 150 is matched with the sliding groove 160 and moves within the sliding groove 160.

[0132] The connecting rod 150 is configured such that when two adjacent frame segments are folded, the connecting rod 150 is located on one of the two frame segments. When two adjacent frame segments are unfolded, the connecting rod 150 moves within the sliding groove 160 so that a part of the connecting rod 150 is located on one of the two frame segments, and the other part of the connecting rod 150 is located on the other of the two frame segments.

[0133] It should be noted that the matching arrangement of the connecting rod 150 and the sliding groove 160 is mainly for when the second frame 122 is unfolded, to connect the unfolded second frame 122 through the connecting rod 150, improve the stability after unfolding, and avoid being bent again.

[0134] For the convenience of description, the second frame 122 can have a plurality of frame segments, and after the plurality of frame segments are unfolded, a complete second frame 122 is formed.

[0135] In some embodiments, two border segments are taken as an example for illustration. The connecting rod 150 is arranged on one of the two border segments. When the two border segments are folded, the connecting rod 150 moves towards the middle of the second border 122 together with one of the two border segments until it is next to the second border 122 or is received within the second border 122.

[0136] When the two border segments are assembled, that is, when the second border 122 is deployed, the two border segments are gradually straightened from the middle of the second border 122 until the entire second border 122 is straightened. At this time, in order to stabilize the assembly stability of the two border segments, the connecting rod 150 slides from one end of the sliding groove 160 to the other border segment. At this time, the connecting rod 150 straddles the two border segments, and the two border segments are connected and fixed by using the fasteners or screws on the connecting rod 150, thereby fixing the second border 122.

[0137] ​ It is a schematic diagram of the first state of the projection screen provided by the embodiment of the present application. ​ It is a schematic structural diagram of the projection screen provided by the embodiment of the present application from the first perspective in the second state. ​ It is a schematic structural diagram of the projection screen provided by the embodiment of the present application from the second perspective in the second state.

[0138] As ​ shown, in some alternative embodiments, a hinge unit 170 is further included. At least two sound units 130 are located on opposite sides of the hinge unit 170. The hinge unit 170 includes a first hinge unit 171 and a second hinge unit 172;

[0139] The screen frame 120 further includes a plurality of vertical beams 123. The plurality of vertical beams 123 are located in the middle of the display diaphragm 110. The first hinge unit 171 is located between the plurality of vertical beams 123 so that two adjacent vertical beams 123 can be folded. The second hinge unit 172 is located between the two border segments so that the second border 122 can be folded;

[0140] The rotation axes of the first hinge unit 171 and the second hinge unit 172 are parallel to each other.

[0141] It should be noted that the first hinge unit 171 can be set on the vertical beam 123, the second hinge unit 172 can be set in the middle of the second frame 122, and the vertical beam 123 can be located in the middle of the second frame 122. When folded, it means that the first hinge unit 171 and the second hinge unit 172 both begin to fold. At this time, the vertical beam 123 and the second frame 122 are respectively in a folded state, and at least two sound-emitting units 130 located on both sides of the vertical beam 123 gradually approach until they are close to each other. At this time, the entire projection screen 100 is in a folded state, which reduces the volume of the screen entering the home, realizes convenient entry into the home, and reduces the transportation and or entry volume.

[0142] When the entry is completed and assembly is required, it is only necessary to rotate the first hinge unit 171 and the second hinge unit 172, that is, the first hinge unit 171 and the second hinge unit 172 are both in the unfolded state, and then the vertical beam 123 and the second frame 122 are respectively in the unfolded state, and the unfolded second frame 122 is fixed by the connecting rod 150, and at least two sound units 130 on both sides of the vertical beam 123 gradually move away from each other. At this time, the entire screen frame 120 and the sound unit 130 are in the unfolded state.

[0143] Finally, after completing the assembly of the screen frame 120, the display film 110 is assembled and assembled to the screen frame 120. The display film 110 is tensioned by the tensioning unit 140 to improve the efficiency of folding and assembling the entire screen frame 120 and the sound unit 130 into the house.

[0144] In addition, it should be noted that the structures of the second hinge unit 172 and the first hinge unit 171 may be the same or different. Specifically, the embodiments of the present application do not limit this in too much detail.

[0145] The projection screen provided by the embodiment of the present application includes: a display film, the display film has a projection light-receiving surface; a screen frame, the screen frame includes at least two first frames and a second frame, the first frames and the second frames are alternately arranged to surround the outer periphery of the display film, wherein the length of the second frame is greater than the length of the first frame, and the second frame is a foldable frame, and the second frame includes multiple frame segments; at least two sound-emitting units, the sound-emitting unit includes an exciter and a sound-emitting plate, the sound-emitting plate is arranged on one of the first frame and the second frame, and is located on the side away from the projection light-receiving surface, the exciter is arranged on the side of the sound-emitting plate away from the display film, and is used to drive the sound-emitting plate to vibrate and produce sound, and there is a gap between the sound-emitting plate and the display film.

[0146] Through the settings of the screen frame and the sound - generating unit, since the screen frame is foldable, it can meet the requirement that multiple sound - generating units can be folded, which can reduce the volume of the projection screen when entering the household, achieve convenient entry, reduce the transportation and / or entry volume, optimize the size of the projection screen, and improve the problem of large - sized projection screens with sound - generating units entering the household. At the same time, this solution integrates various structures, assembles various structures in the factory, and then performs simple assembly at the user's home, making the overall installation of the projection screen more convenient and easy to operate, shortening the assembly time of the product, greatly reducing the labor intensity, enhancing the product influence, and improving the user experience.

[0147] In addition, as ​ shown, the embodiment of the present application also provides a projection screen 100, including:

[0148] A display film 110, the display film 110 has a projection light - receiving surface;

[0149] A screen frame 120, the screen frame 120 is foldably arranged;

[0150] A sound - generating unit 130, the sound - generating unit 130 includes an exciter 131 and a sounding plate 132, the sounding plate 132 is arranged on the screen frame 120, and the exciter 131 is arranged on the side of the sounding plate 132 away from the display film 110 for driving the sounding plate 132 to vibrate and generate sound.

[0151] For the projection screen provided by the embodiment of the present application, through the settings of the screen frame and the sound - generating unit, since the screen frame is foldable, it can meet the requirement that multiple sound - generating units can be folded, which can reduce the volume of the projection screen when entering the household, achieve convenient entry, reduce the transportation and / or entry volume, optimize the size of the projection screen, and improve the problem of large - sized projection screens with sound - generating units entering the household. At the same time, this solution integrates various structures, assembles various structures in the factory, and then performs simple assembly at the user's home, making the overall installation of the projection screen more convenient and easy to operate, shortening the assembly time of the product, greatly reducing the labor intensity, enhancing the product influence, and improving the user experience.

[0152] In addition, the embodiment of the present application also provides a projection system, including a projection device and the above - mentioned projection screen 100, and the projection device is used to project a projection image onto the projection screen 100.

[0153] The projection system provided by this embodiment specifically includes a projection device and the projection screen 100 in the foregoing embodiment, and the projection device is used to project a projection image onto the display film 110 of the projection screen 100.

[0154] Specifically, in the projection system of this embodiment, the projection device can be various existing projectors, such as laser projectors. The projection device can project a projection image onto the display film 110 of the projection screen 100, so that the projection image can be displayed on the display film 110 for people to watch.

[0155] For the projection system provided in this embodiment, the specific structure, working principle, and function of the projection screen 100 have been described in detail in the foregoing Embodiment 1, and will not be elaborated here.

[0156] Through the setting of the screen frame and the sound - emitting unit, since the screen frame is foldable, it can meet the requirement that multiple sound - emitting units can be folded, which can reduce the entry volume of the projection screen, achieve convenient entry, reduce the transportation and / or entry volume, optimize the size of the projection screen, and improve the problem of the entry of large - size projection screens with sound - emitting units. At the same time, this solution integrates various structures, assembles the structures in the factory, and then performs simple assembly at the user's home, making the overall installation of the projection screen more convenient and easy to operate, shortening the assembly time of the product, greatly reducing the labor intensity, enhancing the product influence, and improving the user experience.

[0157] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0158] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0159] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A projection screen, characterized in that, include: A display film having a projection light receiving surface; a screen frame, the screen frame comprising a first frame and a second frame, the first frame and the second frame being alternately arranged to surround the periphery of the display film, wherein the second frame is longer than the first frame, is foldable, and comprises a plurality of frame segments; The sound-emitting unit includes an exciter and a sound-emitting plate. The sound-emitting plate is arranged on one of the first frame and the second frame and is located on the side away from the projection light-receiving surface. The exciter is arranged on the side of the sound-emitting plate away from the display diaphragm and is used to drive the sound-emitting plate to vibrate and produce sound. There is a gap between the sound-emitting plate and the display diaphragm.

2. The projection screen according to claim 1, wherein It also includes a tensioning unit, which includes a pull rod and a tensioning member. The pull rod is connected to the end of the display film, and the tensioning member is movably arranged at the end of the screen frame. The end of the tensioning member abuts against the pull rod to drive the pull rod to move through the movement of the tensioning member.

3. The projection screen according to claim 2, characterized in that, The moving direction of the tensioning member matches the moving direction of the pull rod; and / or, The moving direction of the tensioning member matches the stretching direction of the display film.

4. The projection screen according to any one of claims 1-3, characterized in that, The sound-emitting unit further includes a supporting frame, and the supporting frame is arranged on the second frame; The sounding plate is arranged on the supporting frame, and the supporting frame is used to support the sounding plate and the exciter.

5. The projection screen according to claim 4, characterized in that, The sound-generating unit further includes a cover plate, opposite ends of which are respectively connected to the support frame, and the cover plate is arranged on a side of the actuator away from the display film; and / or, The cover plate extends along the length direction of the first frame.

6. The projection screen according to claim 5, wherein There are a plurality of exciters, and the exciters are arranged at intervals along the extending direction of the cover plate.

7. The projection screen according to any one of claims 1 to 3, characterized in that, The frame segments are provided with connecting rods and sliding grooves, the sliding grooves are located in the plurality of frame segments, the connecting rods match the sliding grooves and move in the sliding grooves; The connecting rod is constructed so that when two adjacent frame segments are folded, the connecting rod is located on one of the two frame segments; when the two adjacent frame segments are unfolded, the connecting rod moves in the sliding groove so that part of the connecting rod is located on one of the two frame segments and the other part of the connecting rod is located on the other of the two frame segments.

8. The projection screen according to any one of claims 1-3, characterized in that, The device further comprises a hinge unit, wherein at least two of the sound generating units are located on opposite sides of the hinge unit, and the hinge unit comprises a first hinge unit and a second hinge unit; The screen frame further comprises a plurality of vertical beams, wherein the plurality of vertical beams are located in the middle of the display film, the first hinge unit is located between the plurality of vertical beams so that two adjacent vertical beams can be folded, and the second hinge unit is located between two frame segments so that the second frame can be folded; The rotation axis of the first hinge unit and the rotation axis of the second hinge unit are parallel to each other.

9. A projection screen, characterized in that, include: A display film having a projection light receiving surface; A screen frame, wherein the screen frame is foldable; Sound generating unit, the sound generating unit includes an exciter and a sounding board, the sounding board is arranged on the screen frame, and the exciter is arranged on a side of the sounding board facing away from the display diaphragm for driving the sounding board to vibrate and generate sound.

10. A projection system, characterized in that, It includes a projection device and the projection screen according to any one of claims 1-9, and the projection device is used for projecting a projection image onto the projection screen.

Images