WO2021078100A1

WO2021078100A1 - Projection system and projection screen

Info

Publication number: WO2021078100A1
Application number: PCT/CN2020/121933
Authority: WO
Inventors: 张健; 杨长明; 李建军
Original assignee: 青岛海信激光显示股份有限公司
Priority date: 2019-10-23
Filing date: 2020-10-19
Publication date: 2021-04-29
Also published as: CN112782928A

Abstract

A projection system and a projection screen body (2), belonging to the technical field of projection. The projection system comprises a projection device (1) and the projection screen body (2), wherein the projection screen body (2) comprises a fixing frame (21), an optical screen (22), a sound production plate (23), one or more exciters (24), a cover plate (25), and a plurality of elastic connecting members (26), the optical screen (22) is attached to the first side of the sound production plate (23), the one or more exciters (24) are fixed to the second side of the sound production plate (23), the cover plate (25) is fastened to the one or more exciters (24), the edge of the sound production plate (23) can be wrapped around the edge of the fixing frame (21), and the sound production plate (23) is connected to the fixing frame (21) by means of the multiple elastic connecting members (26); and the projection device (1) is electrically connected with the one or more exciters (24) and used for emitting projection light to the optical screen (22), and the one or more exciters (24) can excite the sound production plate (23) to vibrate so as to produce sound.

Description

投影***及投影屏幕Projection system and projection screen

本申请要求在2019年10月23日提交中国专利局、申请号为201911011454.8、发明名称为“投影***及投影屏幕”的优先权，其全部内容通过引用结合在本申请中。This application claims priority to be filed with the Chinese Patent Office on October 23, 2019, with application number 201911011454.8 and invention title "Projection System and Projection Screen", the entire content of which is incorporated into this application by reference.

技术领域Technical field

本申请涉及投影技术领域，特别涉及一种投影***及投影屏幕。This application relates to the field of projection technology, in particular to a projection system and a projection screen.

背景技术Background technique

随着科技的不断发展，投影***越来越多的应用于人们的工作和生活中。目前，投影***主要包括投影设备和投影屏幕。其中，投影设备主要用于发出投影光线，投影屏幕固定在支撑体上，且用于对发出的投影光线进行反射，以实现画面的投影。With the continuous development of science and technology, more and more projection systems are used in people's work and life. At present, the projection system mainly includes projection equipment and projection screens. Among them, the projection device is mainly used to emit projection light, and the projection screen is fixed on the support, and is used to reflect the emitted projection light to realize the projection of the screen.

相关技术中，以投影***为激光电视为例，激光电视可以包括投影主机和光学屏幕，投影主机可以发出投影光线，同时播放音频数据，光学屏幕可以接收投影主机发出的投影光线，并在反射后形成画面。In the related art, taking the projection system as a laser TV as an example, the laser TV can include a projection host and an optical screen. The projection host can emit projection light and play audio data at the same time. The optical screen can receive the projection light from the projection host and reflect it. Form a picture.

然而，在通过上述方式实现画面的显示，以及音频数据的播放时，投影主机和光学屏幕必然不在同一位置，从而很容易造成画面和声音不统一的情况，进而降低了投影***的投影效果。However, when displaying images and playing audio data in the above-mentioned manner, the projection host and the optical screen must not be in the same position, which can easily cause the image and sound to be inconsistent, thereby reducing the projection effect of the projection system.

发明内容Summary of the invention

本申请提供了投影***及投影屏幕，采用技术方案如下：This application provides a projection system and a projection screen, and the technical solutions adopted are as follows:

一方面，一种投影***，投影***包括：投影设备和投影屏幕，投影屏幕包括固定框架、光学屏幕、发声板、一个或多个激励器、盖板和多个弹性连接件；In one aspect, a projection system includes: a projection device and a projection screen. The projection screen includes a fixed frame, an optical screen, a sound board, one or more exciters, a cover, and a plurality of elastic connectors;

光学屏幕贴合在发声板的第一侧，一个或多个激励器固定在发声板的第二侧，盖板扣在一个或多个激励器上，发声板的边缘能够包裹固定框架的边缘，且发声板通过多个弹性连接件与固定框架连接；The optical screen is attached to the first side of the sound board, one or more exciters are fixed on the second side of the sound board, the cover is buckled on the one or more exciters, and the edge of the sound board can wrap the edge of the fixed frame, And the sound board is connected with the fixed frame through a plurality of elastic connecting pieces;

投影设备与一个或多个激励器电连接，且用于发出投影光线至光学屏幕，一个或多个激励器能够激发发声板震动以发出声音。The projection device is electrically connected with one or more exciters, and is used for emitting projection light to the optical screen, and the one or more exciters can excite the sound board to vibrate to emit sound.

另一方面，提供一种投影屏幕，投影屏幕包括：固定框架、光学屏幕、发声板、一个或多个激励器、盖板和多个弹性连接件；In another aspect, a projection screen is provided. The projection screen includes: a fixed frame, an optical screen, a sound board, one or more exciters, a cover plate, and a plurality of elastic connectors;

光学屏幕用于接收投影设备发出的投影光线，并进行画面显示，一个或多个激励器用于与投影设备电连接，一个或多个激励器能够激发发声板震动以发出声音。The optical screen is used to receive the projection light emitted by the projection device and perform screen display, one or more exciters are used to electrically connect with the projection device, and one or more exciters can excite the sound board to vibrate to emit sound.

附图说明Description of the drawings

为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

图1是本申请实施例提供的一种投影***的侧视结构示意图；FIG. 1 is a schematic side view of the structure of a projection system provided by an embodiment of the present application;

图2是本申请实施例提供的一种投影屏幕的后视结构示意图；2 is a schematic diagram of a rear view structure of a projection screen provided by an embodiment of the present application;

图3是本申请实施例提供的一种投影屏幕的侧视结构示意图；3 is a schematic diagram of a side view structure of a projection screen provided by an embodiment of the present application;

图4是本申请实施例提供的一种第一蒙皮的局部结构示意图；FIG. 4 is a schematic diagram of a partial structure of a first skin provided by an embodiment of the present application;

图5是本申请实施例提供的另一种第一蒙皮的局部结构示意图；FIG. 5 is a schematic diagram of a partial structure of another first skin provided by an embodiment of the present application;

图6是本申请实施例提供的一种投影屏幕的局部结构示意图；6 is a schematic diagram of a partial structure of a projection screen provided by an embodiment of the present application;

图7是本申请实施例提供的另一种投影屏幕的后视结构示意图。FIG. 7 is a schematic diagram of a rear view structure of another projection screen provided by an embodiment of the present application.

附图标记：Reference signs:

1：投影设备；2：投影屏幕1: Projection equipment; 2: Projection screen

21：固定框架；22：光学屏幕；23：发声板；24：激励器；25：盖板；26：弹性连接件；27：鸡眼扣；21: fixed frame; 22: optical screen; 23: sound board; 24: exciter; 25: cover plate; 26: elastic connector; 27: eyelet button;

211：内边框；212：外边框；231：第一蒙皮；232：第二蒙皮；233：蜂窝芯板；234：软质连接件。211: inner frame; 212: outer frame; 231: first skin; 232: second skin; 233: honeycomb core board; 234: soft connector.

具体实施方式Detailed ways

为使本申请的目的、技术方案和优点更加清楚，下面将结合附图对本申请实施方式作进一步地详细描述。In order to make the objectives, technical solutions, and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below with reference to the accompanying drawings.

图1示例了本申请实施例的一种投影***的侧视结构示意图，图2示例了本申请实施例的一种投影屏幕的后视结构示意图，图3示例了本申请实施例的一种投影屏幕的侧视结构示意图。如图1、图2和图3所示，投影***包括：投影设备1和投影屏幕2，投影屏幕2包括固定框架21、光学屏幕22、发声板23、一个或多个激励器24、盖板25(图中未示出)和多个弹性连接件26；光学屏幕22贴合在发声板23的第一侧，一个或多个激励器24固定在发声板23的第二侧，盖板25扣在所述一个或多个激励器24上，发声板23的边缘能够包裹所述固定框架21的边缘，且发声板23通过多个弹性连接件26与固定框架21连接；投影设备1与一个或多个激励器24电连接，且用于发出投影光线至光学屏幕22，一个或多个激励器24能够激发发声板23震动以发出声音。FIG. 1 illustrates a schematic side view structure diagram of a projection system according to an embodiment of the present application, FIG. 2 illustrates a rear view structure schematic view of a projection screen according to an embodiment of the present application, and FIG. 3 illustrates a projection system according to an embodiment of the present application. Schematic diagram of the side structure of the screen. As shown in Figure 1, Figure 2 and Figure 3, the projection system includes: a projection device 1 and a projection screen 2. The projection screen 2 includes a fixed frame 21, an optical screen 22, a sound board 23, one or more exciters 24, and a cover plate. 25 (not shown in the figure) and a plurality of elastic connectors 26; the optical screen 22 is attached to the first side of the sounding plate 23, one or more exciters 24 are fixed on the second side of the sounding plate 23, and the cover plate 25 Fastened to the one or more exciters 24, the edge of the sounding plate 23 can wrap the edge of the fixed frame 21, and the sounding plate 23 is connected to the fixed frame 21 through a plurality of elastic connectors 26; the projection device 1 is connected to one One or more exciters 24 are electrically connected and used to emit projected light to the optical screen 22, and one or more exciters 24 can excite the sound board 23 to vibrate to emit sound.

本申请实施例中，将光学屏幕22贴合在发声板23的第一侧，这样在投影设备1发出投影光线至光学屏幕22时，光学屏幕22可以对该投影光线进行进行反射，从而在光学屏幕22上实现画面的投影。另外，由于发声板23上固定有与投影设备1电连接的一个或多个激励器24，这样，投影设备1可以驱动激励器24振动，从而通过激励器24带动发声板23共同振动，以通过发声板23发出声音。由于发声板23固定在固定框架21上，光学屏幕22贴合在发声板23上，从而可以保证发声板23光学屏幕22处于同一区域，这样可以达到声音从画面发出的效果，避免了画面和声音不统一的情况，提高了投影***的投影效果。In the embodiment of the present application, the optical screen 22 is attached to the first side of the sound board 23, so that when the projection device 1 emits the projection light to the optical screen 22, the optical screen 22 can reflect the projection light, so that the optical The screen 22 realizes the projection of the picture. In addition, since one or more exciters 24 electrically connected to the projection device 1 are fixed on the sound board 23, the projection device 1 can drive the exciter 24 to vibrate, so that the sound board 23 is driven to vibrate together through the exciter 24 to pass The sounding board 23 emits a sound. Since the sounding board 23 is fixed on the fixed frame 21, the optical screen 22 is attached to the sounding board 23, so that the sounding board 23 and the optical screen 22 can be ensured to be in the same area, which can achieve the effect of sound from the picture, avoiding the picture and sound The non-uniformity improves the projection effect of the projection system.

其中，光学屏幕22可以包括光学膜片，当然也可以包括其他结构，只要能实现画面的显示即可，本申请实施例对此不做限定。Wherein, the optical screen 22 may include an optical film, of course, may also include other structures, as long as the screen can be displayed, which is not limited in the embodiment of the present application.

其中，固定框架21可以为框架式结构，且固定框架21可以为一个带有中空区域的矩形、圆形或其它形状的结构。当然固定框架21也可以为其他非中空的框架结构，只要可以实现与发声板23的连接即可。另外，固定框架21可以用于与支撑体连接，以实现对整个投影屏幕2的固定支撑，支撑体可以是固定支架或者墙体等，只要可以实现投影屏幕2的固定支承即可。Wherein, the fixed frame 21 can be a frame structure, and the fixed frame 21 can be a rectangular, circular or other shape structure with a hollow area. Of course, the fixed frame 21 can also be other non-hollow frame structures, as long as the connection with the sounding board 23 can be realized. In addition, the fixed frame 21 can be used to connect with a supporting body to realize fixed support for the entire projection screen 2. The supporting body can be a fixed bracket or a wall, as long as the projection screen 2 can be fixedly supported.

需要说明的是，固定框架21还可以包括内边框211和外边框212，这样可以通过弹性连接件26将发声板23连接在内边框211上，之后可以将外边框212包裹在内边框211上，以便于可以通过外边框212遮挡发声板23的边缘，从而使投影屏幕2更加美观。It should be noted that the fixed frame 21 may also include an inner frame 211 and an outer frame 212, so that the sound board 23 can be connected to the inner frame 211 through the elastic connecting member 26, and then the outer frame 212 can be wrapped on the inner frame 211, In this way, the edge of the sound board 23 can be blocked by the outer frame 212, so that the projection screen 2 is more beautiful.

在一些实施例中，发声板23的边缘与固定框架21连接，以使发声板23的中心区域位于固定框架21的中心区域，以便于可以将光学屏幕22贴合在发声板23的中心区域，同时保证发声板23发出的声音可以位于正中心位置。In some embodiments, the edge of the sound board 23 is connected to the fixed frame 21, so that the central area of the sound board 23 is located in the central area of the fixed frame 21, so that the optical screen 22 can be attached to the central area of the sound board 23. At the same time, it is ensured that the sound emitted by the sound board 23 can be located at the exact center position.

在一些实施例中，发声板23可以为一整块板，发声板23的面积小于或等于光学屏幕22的面积；或者，发声板23可以包括多块子发声板23，多块子发声板23一体式连接，且能够在一个或多个激励器24的作用下独立发声，多块子发声板23的总面积小于或等于光学屏幕22的面积。In some embodiments, the sounding board 23 may be a whole board, and the area of the sounding board 23 is less than or equal to the area of the optical screen 22; or the sounding board 23 may include multiple sub-sounding boards 23, and multiple sub-sounding boards 23 It is integrally connected and can independently emit sound under the action of one or more exciters 24. The total area of the multiple sub-sounding boards 23 is less than or equal to the area of the optical screen 22.

其中，发声板23为多块子发声板时，可以将多块子发声板一体式连接，以得到发声板23后，再将光学屏幕22贴合在发声板23上。Wherein, when the sound board 23 is a plurality of sub sound boards, the plurality of sub sound boards can be integrally connected to obtain the sound board 23, and then the optical screen 22 is attached to the sound board 23.

在一些实施例中，发声板23可以包括第一蒙皮231、第二蒙皮232和蜂窝芯板233，蜂窝芯板233粘紧在第一蒙皮231和第二蒙皮232之间；光学屏幕22贴合在第一蒙皮231上远离蜂窝芯板233的一侧，一个或多个激励器24固定在第二蒙皮232上远离蜂窝芯板233的一侧；第一蒙皮231和/或第二蒙皮232的边缘包裹所述固定框架21的边缘，且所述第一蒙皮231和/或所述第二蒙皮232通过多个弹性连接件26与固定框架21连接。In some embodiments, the sounding board 23 may include a first skin 231, a second skin 232, and a honeycomb core board 233. The honeycomb core board 233 is glued between the first skin 231 and the second skin 232; optical The screen 22 is attached to the side of the first skin 231 away from the honeycomb core board 233, and one or more exciters 24 are fixed on the side of the second skin 232 away from the honeycomb core board 233; the first skin 231 and /Or the edge of the second skin 232 wraps the edge of the fixed frame 21, and the first skin 231 and/or the second skin 232 are connected to the fixed frame 21 through a plurality of elastic connecting members 26.

其中，第一蒙皮231上与蜂窝芯板233接触的一侧，以及第二蒙皮232上与蜂窝芯板233接触的一侧均可以设置有一层PU(poly urethane，聚氨酯)胶，PU胶可以将第一蒙皮231与第二蒙皮232粘紧在蜂窝芯板233上，同时可以软化第一蒙皮231与第二蒙皮232，以便于第一蒙皮231和第二蒙皮232可以承受拉力的作用。在蜂窝芯板233上粘接第一蒙皮231后，可以通过第一蒙皮231与光学屏幕22的粘接，实现蜂窝芯板233与光学屏幕22的间接连接。Wherein, the side of the first skin 231 that is in contact with the honeycomb core board 233 and the side of the second skin 232 that is in contact with the honeycomb core board 233 may be provided with a layer of PU (polyurethane, polyurethane) glue. The first skin 231 and the second skin 232 can be adhered tightly to the honeycomb core board 233, and the first skin 231 and the second skin 232 can be softened to facilitate the first skin 231 and the second skin 232 Can withstand the effect of pulling force. After the first skin 231 is bonded to the honeycomb core board 233, the first skin 231 and the optical screen 22 can be bonded to achieve an indirect connection between the honeycomb core board 233 and the optical screen 22.

其中，第一蒙皮231和/或第二蒙皮232的边缘可以伸出蜂窝芯板233的边缘，第一蒙皮231和/或第二蒙皮232上伸出蜂窝芯板233的边缘的部分包裹所述固定框架21的边缘，且通过多个弹性连接件26与固定框架21连接。Wherein, the edge of the first skin 231 and/or the second skin 232 can protrude from the edge of the honeycomb core board 233, and the edge of the first skin 231 and/or the second skin 232 can protrude from the edge of the honeycomb core board 233 The edge of the fixed frame 21 is partially wrapped, and is connected to the fixed frame 21 through a plurality of elastic connecting members 26.

在第一蒙皮231通过弹性连接件26与固定框架21连接时，可以先环绕第二蒙皮232 的边缘裁去一圈，再将这一圈蒙皮对应的蜂窝芯板233去掉，以保证第一蒙皮231的边缘伸出蜂窝芯板233的边缘，进而可以将第一蒙皮231上伸出蜂窝芯板233的边缘的部分通过弹性连接件26与固定框架21连接。When the first skin 231 is connected to the fixed frame 21 through the elastic connecting member 26, a circle can be cut around the edge of the second skin 232, and then the honeycomb core board 233 corresponding to this circle of skin can be removed to ensure The edge of the first skin 231 protrudes from the edge of the honeycomb core board 233, and the part of the first skin 231 protruding from the edge of the honeycomb core board 233 can be connected to the fixed frame 21 through the elastic connecting member 26.

进一步地，在将第一蒙皮231上伸出蜂窝芯板233的边缘的部分与固定框架21连接时，使第一蒙皮231上伸出蜂窝芯板233的部分位于固定框架21的的第一侧，且伸出固定框架21的边缘，之后将第一蒙皮231上伸出的部分朝向固定框架21的第二侧翻折，以使第一蒙皮231的边缘包裹的固定框架21上，之后通过弹性连接件26使第一蒙皮231的边缘与固定框架21连接。Further, when the part of the first skin 231 protruding from the edge of the honeycomb core board 233 is connected to the fixed frame 21, the part of the first skin 231 protruding from the honeycomb core board 233 is located on the second side of the fixed frame 21 One side, and protrudes from the edge of the fixed frame 21, and then the protruding part of the first skin 231 is folded toward the second side of the fixed frame 21, so that the edge of the first skin 231 is wrapped on the fixed frame 21 Then, the edge of the first skin 231 is connected to the fixed frame 21 through the elastic connecting member 26.

需要说明的是，在对第一蒙皮231上伸出蜂窝芯板233的分布进行翻折时，为了使第一蒙皮231在四个边角处便于翻折，在一些实施例中，如图4和图5所示，可以裁剪掉第一蒙皮231的四个边角。It should be noted that when folding the distribution of the honeycomb core board 233 on the first skin 231, in order to make the first skin 231 easy to be folded at the four corners, in some embodiments, such as As shown in FIGS. 4 and 5, the four corners of the first skin 231 can be cut off.

还需要说明的是，在第二蒙皮232通过弹性连接件26与固定框架21连接时，如图3所示，可以采用与上述相似的方式实现第二蒙皮232与固定框架21的连接，本申请实施例在此不再赘述。It should also be noted that when the second skin 232 is connected to the fixed frame 21 through the elastic connecting member 26, as shown in FIG. 3, the connection between the second skin 232 and the fixed frame 21 can be achieved in a similar manner to the above. The embodiments of this application will not be repeated here.

其中，在第一蒙皮231和第二蒙皮232通过弹性连接件26与固定框架21连接时，可以在绕蜂窝芯板233的边缘裁去一圈，之后可以采用与上述相似的方式实现第一蒙皮231和第二蒙皮232同时与固定框架21的连接，本申请实施例在此不再赘述。Wherein, when the first skin 231 and the second skin 232 are connected to the fixed frame 21 through the elastic connecting member 26, a circle can be cut around the edge of the honeycomb core plate 233, and then the second skin can be realized in a similar manner to the above. The first skin 231 and the second skin 232 are connected to the fixed frame 21 at the same time, which will not be repeated here in the embodiment of the present application.

在另一些实施例中，如图6所示，发声板23包括第一蒙皮231、第二蒙皮232、蜂窝芯板233和软质连接件234，蜂窝芯板233粘紧在第一蒙皮231和第二蒙皮232之间，光学屏幕22贴合在第一蒙皮231上远离蜂窝芯板233的一侧，一个或多个激励器24固定在第二蒙皮232上远离蜂窝芯板233的一侧；软质连接件234呈回形结构，软质连接件234环绕第二蒙皮232的边缘，且软质连接件234的内边缘与第二蒙皮232固定连接，软质连接件234的外边缘包裹所述固定框架21，且通过多个弹性连接件26与固定框架21连接。In other embodiments, as shown in FIG. 6, the sounding board 23 includes a first skin 231, a second skin 232, a honeycomb core board 233, and a flexible connecting member 234. The honeycomb core board 233 is adhered to the first skin. Between the skin 231 and the second skin 232, the optical screen 22 is attached to the side of the first skin 231 away from the honeycomb core board 233, and one or more exciters 24 are fixed on the second skin 232 away from the honeycomb core One side of the board 233; the soft connecting piece 234 has a loop-shaped structure, the soft connecting piece 234 surrounds the edge of the second skin 232, and the inner edge of the soft connecting piece 234 is fixedly connected to the second skin 232, the soft The outer edge of the connecting piece 234 wraps the fixed frame 21 and is connected to the fixed frame 21 through a plurality of elastic connecting pieces 26.

其中，软质连接件234可以是可以是软质布。示例地，软质连接件234可以是合成布，以保证软质布具有良好的延展性，从而可以在外力作用下处于绷紧状态，且不会发生变形。Wherein, the soft connecting member 234 may be a soft cloth. For example, the soft connecting member 234 may be a synthetic cloth to ensure that the soft cloth has good ductility, so that it can be in a taut state under the action of an external force and will not be deformed.

当软质连接件234为软质布时，可以采用如上述所述的第一蒙皮231与固定框架21的连接方式实现软质连接件234与固定框架21的连接。需要说明的是，软质连接件234与第二蒙皮232连接时，可以通过双面胶等粘合，也可以通过其他方式实现连接，本申请实施例对此不做限定。When the soft connecting member 234 is a soft cloth, the connection between the first skin 231 and the fixed frame 21 as described above can be adopted to realize the connection between the soft connecting member 234 and the fixed frame 21. It should be noted that when the flexible connecting member 234 is connected to the second skin 232, the connection can be achieved by double-sided tape or other means, which is not limited in the embodiment of the present application.

需要说明的是，软质连接件234也可以和第一蒙皮231固定连接，连接方式可以如上述所述的软质连接件234与第二蒙皮232的连接方式，之后再通过软质连接件234与固定框架21连接。在通过软质连接件234与固定框架21连接时，可以不对第一蒙皮231、第二蒙皮232和蜂窝芯板233的边缘进行裁剪，只要可以实现发声板23与软质连接件234的连接即可。It should be noted that the soft connector 234 can also be fixedly connected to the first skin 231, and the connection method can be as described above for the connection of the soft connector 234 and the second skin 232, and then through the soft connection The piece 234 is connected to the fixed frame 21. When connecting with the fixed frame 21 through the soft connecting piece 234, the edges of the first skin 231, the second skin 232 and the honeycomb core board 233 may not be cut, as long as the sound board 23 and the soft connecting piece 234 can be connected Just connect.

对于上述两种实施例，第一蒙皮231、第二蒙皮232和蜂窝芯板233的结构和样式相同或相似。因此，接下来对上述两种实施例中的任一实施例的第一蒙皮231、第二蒙皮232和蜂窝芯板233进行介绍。For the above two embodiments, the structures and styles of the first skin 231, the second skin 232 and the honeycomb core board 233 are the same or similar. Therefore, the first skin 231, the second skin 232, and the honeycomb core panel 233 of any one of the above two embodiments will be introduced next.

其中，第一蒙皮231与第二蒙皮232可以为纤维蒙皮，由于纤维的延伸方向可以是单一方向或是交织方向，且纤维的抗拉强度大，因此第一蒙皮231和/或第二蒙皮232在通过弹性连接件26连接在固定框架21上时，可以被弹性连接件26拉紧，且不易损坏。Wherein, the first skin 231 and the second skin 232 can be fiber skins. Since the extending direction of the fibers can be a single direction or an interweaving direction, and the tensile strength of the fibers is high, the first skin 231 and/or When the second skin 232 is connected to the fixed frame 21 by the elastic connecting member 26, it can be tightened by the elastic connecting member 26 and is not easily damaged.

需要说明的是，第一蒙皮231和第二蒙皮232的材料可以为玻璃纤维、碳纤维或玻璃-碳混合纤维，当然，第一蒙皮231和第二蒙皮232也可以为塑料或轻质铝等。第一蒙皮231与第二蒙皮232的厚度均可以位于0.1～0.5mm的厚度范围内，进一步地，第一蒙皮231与第二蒙皮232的厚度均可以位于0.18～0.36mm的厚度范围内，第一蒙皮231的厚度和第二蒙皮232的厚度可以不同，只要位于上述厚度范围内即可。It should be noted that the material of the first skin 231 and the second skin 232 can be glass fiber, carbon fiber or glass-carbon hybrid fiber. Of course, the first skin 231 and the second skin 232 can also be plastic or light. Quality aluminum and so on. The thickness of the first skin 231 and the second skin 232 may both be in the thickness range of 0.1 to 0.5 mm, and further, the thickness of the first skin 231 and the second skin 232 may both be in the thickness of 0.18 to 0.36 mm Within the range, the thickness of the first skin 231 and the thickness of the second skin 232 may be different, as long as they are within the above-mentioned thickness range.

其中，蜂窝芯板233为横截面是多个空心六边形蜂窝格紧密排布的蜂窝状芯板，蜂窝芯板233中的每个六边形蜂窝格中包括至少一对平行的蜂窝壁，且存在一对平行的蜂窝壁与水平面垂直。示例地，蜂窝芯板233的材质可以是纸质、芳纶、金属或其他复合材料。Wherein, the honeycomb core board 233 is a honeycomb core board with a plurality of hollow hexagonal honeycomb cells closely arranged in cross section. Each hexagonal honeycomb cell in the honeycomb core board 233 includes at least a pair of parallel honeycomb walls, And there is a pair of parallel honeycomb walls perpendicular to the horizontal plane. For example, the material of the honeycomb core board 233 may be paper, aramid, metal or other composite materials.

需要说明的是，平行的一对蜂窝壁之间的距离位于3～10mm的范围内，平行的一对蜂窝壁之间的距离与蜂窝格的横截面上相对的两个顶点之间的距离的比值小于0.58。It should be noted that the distance between a pair of parallel honeycomb walls is in the range of 3-10mm, and the distance between a pair of parallel honeycomb walls is equal to the distance between two opposing vertices on the cross section of the honeycomb cell. The ratio is less than 0.58.

还需要说明的是，发声板23也可以只包括蜂窝芯板233，或者只包括蜂窝芯板233和第一蒙皮231，或者只包括蜂窝芯板233和第二蒙皮232，只要可以将光学屏幕22和激励器24固定在发声板23上，且将蜂窝芯板233与固定框架21固定连接即可，本申请实施例对此不做限定。It should also be noted that the sounding board 23 may also include only the honeycomb core board 233, or only the honeycomb core board 233 and the first skin 231, or only the honeycomb core board 233 and the second skin 232, as long as the optical The screen 22 and the exciter 24 are fixed on the sound board 23, and the honeycomb core board 233 is fixedly connected to the fixed frame 21, which is not limited in the embodiment of the present application.

在一些实施例中，光学屏幕22可以通过双面胶贴合在发声板23上，也即是光学屏幕22可以通过双面胶贴合在第一蒙皮231上远离蜂窝芯板233的一侧。当然，光学屏幕22也可以通过其他方式贴合在发声板23上，本申请实施例对此不做限定。In some embodiments, the optical screen 22 can be attached to the sounding board 23 by double-sided tape, that is, the optical screen 22 can be attached to the first skin 231 on the side away from the honeycomb core board 233 by double-sided tape. . Of course, the optical screen 22 can also be attached to the sound board 23 in other ways, which is not limited in the embodiment of the present application.

需要说明的是，由于光学屏幕22为半透明材质，从而很容易透过光学屏幕22观察到发声板23的结构，而如果发声板23表面不够平整，则和容易观察到发声板23的凹坑和凸起，另外，发声板23的表面的不平整也会使得光学屏幕22不够平整，因此，在一些实施例中，可以使第一蒙皮231的厚度大于第二蒙皮232的厚度，以通过第一蒙皮231对蜂窝芯板233的挤压，使蜂窝芯板233的不平整度显示在第二蒙皮232所在的一侧，以提高第一蒙皮231的平整度，进而提高了光学屏幕22的平整度。It should be noted that since the optical screen 22 is made of translucent material, it is easy to observe the structure of the sounding plate 23 through the optical screen 22, and if the surface of the sounding plate 23 is not flat enough, it is easy to observe the pits of the sounding plate 23. In addition, the unevenness of the surface of the sounding board 23 will also make the optical screen 22 not flat enough. Therefore, in some embodiments, the thickness of the first skin 231 may be greater than the thickness of the second skin 232 to Through the extrusion of the honeycomb core board 233 by the first skin 231, the unevenness of the honeycomb core board 233 is displayed on the side where the second skin 232 is located, so as to improve the flatness of the first skin 231, thereby increasing The flatness of the optical screen 22.

在一些实施例中，如图7所示，发声板23的边缘可以设置有与多个弹性连接件26一一对应的多个通孔，每个弹性连接件26的第一端与对应的通孔连接，每个弹性连接件26的第二端与固定框架21连接。示例地，多个弹性连接件26可以为多个拉力弹簧。In some embodiments, as shown in FIG. 7, the edge of the sounding plate 23 may be provided with a plurality of through holes corresponding to the plurality of elastic connecting members 26 one-to-one, and the first end of each elastic connecting member 26 is connected to the corresponding connecting member 26. The second end of each elastic connecting member 26 is connected with the fixed frame 21. For example, the plurality of elastic connecting members 26 may be a plurality of tension springs.

需要说明的是，对于每个通孔的尺寸，只要保证弹性连接件26的第一端可以伸进对应的通孔即可。弹性连接件26不仅可以起到拉紧发声板23的作用，还可以基于多个弹性连接件26所具有的弹性形变，在发声板23振动时起到一定的减振和缓冲作用，以避免发声板23的振动带动固定框架21发生振动，从而可以减小固定框架21因振动而产生的噪声。It should be noted that, for the size of each through hole, it is only necessary to ensure that the first end of the elastic connecting member 26 can extend into the corresponding through hole. The elastic connecting member 26 can not only play the role of tensioning the sounding plate 23, but also can play a certain vibration damping and buffering effect when the sounding plate 23 vibrates based on the elastic deformation of the plurality of elastic connecting members 26, so as to avoid sound generation. The vibration of the plate 23 drives the fixed frame 21 to vibrate, so that the noise generated by the fixed frame 21 due to vibration can be reduced.

在一些实施例中，多个通孔可以在第一蒙皮231和/或第二蒙皮232的边缘布置，或在软质布的外边缘布置，当然多个通孔也可以只在第一蒙皮231和/或第二蒙皮232上相对的两条侧边上布置，或在软质布上相对的两条侧边上布置。In some embodiments, multiple through holes can be arranged on the edge of the first skin 231 and/or the second skin 232, or on the outer edge of the soft cloth. Of course, multiple through holes can also be arranged on the edge of the first skin 231 and/or the second skin 232 only. The skin 231 and/or the second skin 232 are arranged on two opposite sides, or arranged on two opposite sides of the soft cloth.

示例地，可以在第一蒙皮231和/或第二蒙皮232上相对的两条侧边上分别布置六个通孔，或在软质布上相对的两条侧边上分别布置六个通孔。其中，两个通孔可以设置在对应的一条侧边的中间位置，剩余四个通孔可以对称的设置在对应的一条侧边的两端。For example, six through holes can be arranged on two opposite sides of the first skin 231 and/or second skin 232, or six through holes can be arranged on two opposite sides of the soft cloth. Through hole. Wherein, two through holes may be arranged at the middle position of a corresponding side, and the remaining four through holes may be symmetrically arranged at both ends of a corresponding side.

在一些实施例中，多个弹性连接件26中存在至少两个第一子弹性连接件和/或至少两个第二子弹性连接件；至少两个第一子弹性连接件中每个第一子弹性连接件所在的直线与发声板23的一条侧边之间的夹角位于参考夹角范围内，至少两个第二子弹性连接件中每个第二子弹性连接件所在的直线垂直或平行于发声板23的一条侧边。In some embodiments, there are at least two first sub-elastic connectors and/or at least two second sub-elastic connectors in the plurality of elastic connectors 26; each of the at least two first sub-elastic connectors is The included angle between the line on which the sub-elastic connector is located and one side of the sounding plate 23 is within the reference included angle range, and the line on which each second sub-elastic connector of the at least two second sub-elastic connectors is located is vertical or Parallel to one side of the sounding board 23.

其中，参考夹角范围可以是指大于0度且小于90度的夹角范围。这样，第一子弹性连接件相对于发声板23的侧边倾斜布置，可以使得第一子弹性连接件的拉力在水平和竖直方向各产生一个分力，从而使得整个发声板23可以在竖直和水平方向均受力，这样，可以只通过至少两个第二子弹性连接件将发声板23的上侧和下侧与固定框架21连接，或者将发声板23的左侧和右侧与固定框架21连接，从而可以减少第二子弹性连接件的数量。Wherein, the reference included angle range may refer to an included angle range greater than 0 degrees and less than 90 degrees. In this way, the first elastic sub-connecting member is arranged obliquely with respect to the side of the sounding plate 23, so that the tensile force of the first elastic sub-connecting member can generate a component in the horizontal and vertical directions, so that the entire sounding plate 23 can be in the vertical direction. The force is applied in both the straight and horizontal directions. In this way, the upper and lower sides of the sounding plate 23 can be connected to the fixed frame 21 only through at least two second sub-elastic connecting members, or the left and right sides of the sounding plate 23 can be connected to the fixed frame 21. The fixed frame 21 is connected, so that the number of second sub-elastic connecting members can be reduced.

其中，第一子弹性连接件所在的直线与发声板23的一条竖直方向的侧边之间的夹角存在一个最佳值，此最佳值可以通过如下公式得知：Wherein, there is an optimal value for the angle between the straight line where the first sub-elastic connector is located and a vertical side of the sounding plate 23, and this optimal value can be obtained by the following formula:

上述公式中，θ为第一子弹性连接件所在的直线与发声板23的一条竖直方向的侧边之间的夹角，X为竖直放置时弹性连接件26的总长，Y为倾斜放置时弹性连接件26的总长，L为弹簧原长。In the above formula, θ is the angle between the straight line on which the first sub-elastic connector is located and a vertical side of the sounding plate 23, X is the total length of the elastic connector 26 when placed vertically, and Y is the diagonally placed When the total length of the elastic connecting member 26, L is the original length of the spring.

需要说明的是，此角度可以存在±5°的偏差，多个弹性连接件26可以对称分布在发声板23上相对的两条侧边，从而能够保证发声板23在相背的两个方向上受力平衡，避免弹性连接件26将发声板23拉歪，或造成发声板23的某片区域受力不均衡，从而发生破损的现象。It should be noted that this angle can have a deviation of ±5°, and a plurality of elastic connectors 26 can be symmetrically distributed on two opposite sides of the sounding plate 23, so as to ensure that the sounding plate 23 is in two opposite directions. The force is balanced to prevent the elastic connecting member 26 from pulling the sounding plate 23 skewed, or causing a certain area of the sounding plate 23 to be unbalanced in force, thereby causing damage.

进一步地，在通过弹性连接件26连接发声板23和固定框架21时，投影屏幕2还可以包括多个鸡眼扣27，多个鸡眼扣27与发声板23上的多个通孔一一对应，每个鸡眼扣27包裹对应通孔的边缘，每个弹性连接件26的第一端与对应的鸡眼扣27连接。Further, when the sounding board 23 and the fixed frame 21 are connected by the elastic connecting member 26, the projection screen 2 may also include a plurality of eyelet buttons 27, and the plurality of eyelet buttons 27 correspond to the multiple through holes on the sounding board 23 one-to-one. Each eyelet button 27 wraps the edge of the corresponding through hole, and the first end of each elastic connecting member 26 is connected to the corresponding eyelet button 27.

这样，弹性连接件26的第一端可以穿过对应的鸡眼扣27实现与发声板23的连接，以保证弹性连接件26与发声板23之间的作用力能够均匀分布在鸡眼扣27上，进而避免发声板23因局部受力较大而发生破损。In this way, the first end of the elastic connecting member 26 can pass through the corresponding eyelet button 27 to realize the connection with the sounding board 23, so as to ensure that the force between the elastic connecting member 26 and the sounding board 23 can be evenly distributed on the eyelet button 27. Furthermore, it is avoided that the sounding plate 23 is damaged due to a large local force.

本申请实施例中，一个或多个激励器24可以弹性连接发声板23上。此时，投影屏幕2还可以包括与一个或多个激励器24一一对应的一个或多个泡棉胶，一个或多个激励器24分别通过对应的泡棉胶粘接在发声板23上。In the embodiment of the present application, one or more exciters 24 can be elastically connected to the sound board 23. At this time, the projection screen 2 may also include one or more foam glue corresponding to one or more exciters 24, and the one or more exciters 24 are respectively adhered to the sound board 23 through the corresponding foam glue. .

激励器24在工作时，需要在发声板23的法向方向上做往复运动，同时激励器24在靠近发声板23时可以将声波传递给发声板23，另发声板23的整个板面共同振动。由于泡棉胶具有一定弹性，所以可以保证粘接激励器24的同时使激励器24实现在发声板23的法向方向进行往复运动。When the exciter 24 is working, it needs to reciprocate in the normal direction of the sounding board 23. At the same time, the exciter 24 can transmit sound waves to the sounding board 23 when it is close to the sounding board 23, and the entire surface of the sounding board 23 vibrates together. . Since the foam glue has certain elasticity, it can ensure that the exciter 24 is bonded while enabling the exciter 24 to reciprocate in the normal direction of the sounding plate 23.

在一些实施例中，投影屏幕2还可以包括与一个或多个激励器24一一对应的一个或多个弹性体。每个弹性体固定在对应的激励器24上，盖板25扣在一个或多个弹性体上，且与发声板23和/或固定框架21固定连接。In some embodiments, the projection screen 2 may further include one or more elastic bodies corresponding to one or more exciters 24 in a one-to-one manner. Each elastic body is fixed on the corresponding exciter 24, and the cover plate 25 is buckled on one or more elastic bodies, and is fixedly connected with the sounding plate 23 and/or the fixing frame 21.

需要说明的是，由于盖板25扣在一个或多个弹性体上，从而可以通过盖板25减小每个激励器24在沿远离发声板23的方向上的振幅，从而减小了激励器24振动时能量的损耗。另外，每个弹性体可以防止对应的激励器24与盖板25之间的硬性接触，从而避免杂音的产生。It should be noted that since the cover plate 25 is buckled on one or more elastic bodies, the amplitude of each exciter 24 in the direction away from the sounding plate 23 can be reduced by the cover plate 25, thereby reducing the exciter 24 Energy loss during vibration. In addition, each elastic body can prevent hard contact between the corresponding exciter 24 and the cover plate 25, thereby avoiding the generation of noise.

在一些实施例中，一个或多个弹性体中可以存在至少一个环状泡棉，每个环状泡棉套在对应的激励器24上，且与对应的激励器24胶合。In some embodiments, there may be at least one annular foam in one or more elastomers, and each annular foam is sleeved on the corresponding exciter 24 and glued to the corresponding exciter 24.

需要说明的是，由于环状泡棉可以在激励器24与盖板25之间因挤压而发生弹性变形，因此胶合在激励器24上的环状泡棉可以防止激励器24与盖板25之间的硬性接触，避免产生不必要的摩擦和噪音。在激励器24振动时，由于环状泡棉存在一定的厚度，在激励器24与盖板25进行间接接触时，还可以通过环状泡棉限制激励器24的振幅，从而减小激励器24在沿远离发声板23的方向上的能量的损耗。It should be noted that because the ring-shaped foam can be elastically deformed between the exciter 24 and the cover 25 due to squeezing, the ring-shaped foam glued on the exciter 24 can prevent the exciter 24 and the cover 25 from being compressed. The hard contact between them avoids unnecessary friction and noise. When the exciter 24 vibrates, because the ring foam has a certain thickness, when the exciter 24 is in indirect contact with the cover 25, the amplitude of the exciter 24 can also be limited by the ring foam, thereby reducing the exciter 24 The loss of energy in the direction away from the sounding plate 23.

示例地，环状泡棉可以通过双面胶粘接在激励器24上，也可以通过其他方式与激励器24胶合，本实用新型实施例对此不做限定。For example, the ring-shaped foam can be adhered to the exciter 24 by double-sided tape, or can be glued to the exciter 24 in other ways, which is not limited in the embodiment of the present invention.

在一些实施例中，一个或多个弹性体中也可以存在至少一个弹簧，每个弹簧的第一端可以胶合在对应的激励器24上，每个弹簧的第二端可以胶合在盖板25上。由于弹簧在激励器24与盖板25之间能够因挤压而发生弹性变形，从而至少一个弹簧中的每个弹簧可以在对应的激励器24和盖板25之间形成弹性缓冲。同时，在激励器24通过弹簧与盖板25进行间接接触时，弹簧还可以限制激励器24的振幅，从而减小激励器24在沿远离发声板23的方向上的能量的损耗。In some embodiments, at least one spring may also be present in one or more elastic bodies, the first end of each spring may be glued to the corresponding exciter 24, and the second end of each spring may be glued to the cover 25 on. Since the spring can be elastically deformed due to compression between the exciter 24 and the cover plate 25, each of the at least one spring can form an elastic buffer between the corresponding exciter 24 and the cover plate 25. At the same time, when the exciter 24 is in indirect contact with the cover plate 25 through the spring, the spring can also limit the amplitude of the exciter 24, thereby reducing the energy loss of the exciter 24 in the direction away from the sounding plate 23.

由于每个弹簧的两端分别连接在对应的激励器24和盖板25上，从而可以避免每个弹簧与激励器24和/或盖板25之间的硬性接触，避免产生不必要的摩擦和噪音。Since the two ends of each spring are respectively connected to the corresponding exciter 24 and the cover plate 25, hard contact between each spring and the exciter 24 and/or the cover plate 25 can be avoided, and unnecessary friction and noise.

在一些实施例中，盖板25上可以设置有与一个或多个激励器24一一对应的一个或多个透气孔，这样，在激励器24振动时，盖板25两侧的气体可以通过透气孔互相交换，也即是，在激励器24振动时，透气孔可以平衡盖板25两侧的气压差，使盖板25两侧的空气流通更加顺畅。In some embodiments, the cover plate 25 may be provided with one or more vent holes corresponding to one or more exciters 24, so that when the exciter 24 vibrates, the gas on both sides of the cover plate 25 can pass through The ventilation holes are exchanged with each other, that is, when the exciter 24 vibrates, the ventilation holes can balance the air pressure difference between the two sides of the cover plate 25, so that the air circulation on both sides of the cover plate 25 is smoother.

在一些实施例中，盖板25可以呈条状结构，盖板25的两端与固定框架21固定连接，盖板25上可以设置有与一个或多个激励器24对应的一个或多个凹槽，每个激励器24上远离发声板23的一侧位于对应的凹槽内。In some embodiments, the cover plate 25 may have a strip structure, the two ends of the cover plate 25 are fixedly connected to the fixing frame 21, and the cover plate 25 may be provided with one or more recesses corresponding to one or more exciters 24. The groove, the side of each exciter 24 away from the sounding plate 23 is located in the corresponding groove.

需要说明的是，为了防止激励器24与盖板25之间的硬性接触，凹槽的侧面和底面均与激励器24之间存在间隙，凹槽的形状可以与激励器24的形状相同或相似。当激励器24从发声板23上脱落时，每个激励器24对应的凹槽可以在竖直方向上对该激励器24进行限位，可以暂时承载脱落的激励器24。It should be noted that in order to prevent hard contact between the exciter 24 and the cover 25, there is a gap between the side and bottom surface of the groove and the exciter 24, and the shape of the groove can be the same or similar to that of the exciter 24 . When the exciter 24 falls off the sounding plate 23, the groove corresponding to each exciter 24 can limit the exciter 24 in the vertical direction, and can temporarily carry the exciter 24 that has fallen off.

需要说明的是，盖板25上沿长度方向可以设置有一个或多个筋条。一个或多个筋条的数量为多个时，多个筋条可以沿盖板25的宽度方向均匀布置。筋条可以增加盖板25的强度，可以保证盖板25能够施加给激励器24更多的应力，同时增强盖板25的稳定性。It should be noted that one or more ribs may be provided on the cover plate 25 along the length direction. When the number of one or more ribs is multiple, the multiple ribs may be uniformly arranged along the width direction of the cover plate 25. The ribs can increase the strength of the cover plate 25, can ensure that the cover plate 25 can apply more stress to the exciter 24, and at the same time enhance the stability of the cover plate 25.

在一些实施例中，盖板25可以呈直线的条状结构，当然，盖板25也可以呈弯折的条状结构，只要能起到扣住激励器24的作用即可。比如，当多个激励器24在发声板23上呈直线排列时，盖板25可以为直线条状盖板25，当多个激励器24在发声板23上呈非直线排列时，盖板25可以根据激励器24的分布形式设置成弯折盖板25。In some embodiments, the cover plate 25 can have a linear strip structure. Of course, the cover plate 25 can also have a bent strip structure, as long as it can hold the actuator 24. For example, when a plurality of exciters 24 are arranged in a straight line on the sounding plate 23, the cover plate 25 may be a linear strip-shaped cover plate 25, and when the plurality of exciters 24 are arranged non-linearly on the sounding plate 23, the cover plate 25 The cover plate 25 can be bent according to the distribution form of the exciters 24.

其中，盖板25的两端可以通过螺钉与固定框架21固定连接，当然也可以通过其他方式与固定框架21固定连接，本实用新型实施例对此不做限定。Wherein, both ends of the cover plate 25 can be fixedly connected to the fixed frame 21 by screws, of course, can also be fixedly connected to the fixed frame 21 in other ways, which is not limited in the embodiment of the present invention.

在一些实施例中，投影屏幕2还可以包括一个或多个支撑机构，每个支撑机构可以包括挂架和第一弹性垫；挂架的支撑臂伸入固定框架21的挂槽内，第一弹性垫扣在挂架的支撑臂上，且能够填充挂架的支撑臂与挂槽的侧壁之间的间隙，挂架的固定臂用于与支撑体连接。In some embodiments, the projection screen 2 may also include one or more supporting mechanisms, and each supporting mechanism may include a hanger and a first elastic pad; the support arm of the hanger extends into the hanging slot of the fixed frame 21, and the first The elastic pad is buckled on the support arm of the hanger, and can fill the gap between the support arm of the hanger and the side wall of the hanging groove, and the fixed arm of the hanger is used for connecting with the support body.

其中，挂架的支撑臂与固定臂之间可以设置有一段连接段，以实现支撑臂与固定臂之间的连接。支撑臂、连接端和固定臂可以连接成U型结构，或者支撑臂上远离连接段的一端的朝向与固定臂上远离连接段的一端的朝向相反的结构。支撑臂、连接端和固定臂之间可以通过一体成型的方式得到，以增加挂架的整体强度。Wherein, a connecting section may be provided between the support arm and the fixed arm of the hanger to realize the connection between the support arm and the fixed arm. The support arm, the connecting end and the fixed arm may be connected to form a U-shaped structure, or the end of the support arm away from the connecting section faces the opposite structure to the end of the fixed arm away from the connecting section. The support arm, the connecting end and the fixed arm can be formed in one piece to increase the overall strength of the hanger.

示例地，支撑臂与连接段的第一端垂直连接，固定臂与连接段的第二端垂直连接。此时，连接段可以作为支撑平台。Illustratively, the support arm is vertically connected to the first end of the connecting section, and the fixed arm is vertically connected to the second end of the connecting section. At this time, the connecting section can be used as a supporting platform.

其中，第一弹性垫的材料可以为硅胶或其他材料，只要具有缓冲吸振和承载能力即可。Wherein, the material of the first elastic pad can be silica gel or other materials, as long as it has shock-absorbing and bearing capacity.

在一些实施例中，第一弹性垫可以呈U形结构，且第一弹性垫的第一侧壁与第二侧壁之间的垂直距离等于挂架的支撑臂的厚度。这样，挂架的支撑臂可以卡进第一弹性垫的第一侧壁与第二侧壁之间的空隙，且在支撑臂伸入固定框架21的挂槽时，可以通过第一弹性垫的的第一侧壁与第二侧壁填充挂架的支撑臂与挂槽之间的空隙，以避免支撑臂与挂槽之间的硬性接触，从而实现挂架与挂槽之间的减振。In some embodiments, the first elastic pad may have a U-shaped structure, and the vertical distance between the first side wall and the second side wall of the first elastic pad is equal to the thickness of the support arm of the hanger. In this way, the support arm of the hanger can be clipped into the gap between the first side wall and the second side wall of the first elastic pad, and when the support arm extends into the hanging groove of the fixed frame 21, it can pass through the first elastic pad. The first side wall and the second side wall fill the gap between the support arm and the hanging slot of the hanger, so as to avoid hard contact between the support arm and the hanging slot, so as to achieve vibration reduction between the hanger and the hanging slot.

其中，第一弹性垫的第一侧壁的厚度、第二侧壁的厚度与支撑臂的厚度总和可以等于挂槽上相对的两个内壁之间的垂直距离，以避免第一弹性垫与固定框架21之间可能发生的晃动。Wherein, the sum of the thickness of the first side wall of the first elastic pad, the thickness of the second side wall and the thickness of the support arm may be equal to the vertical distance between the two opposite inner walls of the hanging groove, so as to prevent the first elastic pad from being fixed The possible shaking between the frames 21.

在另一些实施例中，第一弹性垫呈S形结构，第一弹性垫还可以扣在挂槽的侧壁。In other embodiments, the first elastic pad has an S-shaped structure, and the first elastic pad can also be buckled on the side wall of the hanging groove.

其中，S形结构的第一弹性垫是指存在两个U形槽，且两个U形槽的开口朝向相反的结构。在通过挂架的支撑臂伸入挂槽以支撑固定框架21时，可以通过第一弹性垫上第一U形槽的两个侧壁填充支撑臂与挂槽的侧壁之间的间隙，以实现挂架与挂槽之间的一级减振，通过第二U形槽的底部填充支撑平台与挂槽的侧壁之间的间隙，从而实现挂架与挂槽之间的二级减振。Among them, the first elastic pad of the S-shaped structure refers to a structure in which there are two U-shaped grooves, and the openings of the two U-shaped grooves are facing oppositely. When the support arm of the hanger extends into the hanging groove to support the fixed frame 21, the gap between the support arm and the side wall of the hanging groove can be filled by the two side walls of the first U-shaped groove on the first elastic pad to achieve The primary vibration reduction between the hanger and the hanging trough fills the gap between the support platform and the side wall of the hanging trough through the bottom of the second U-shaped groove, thereby realizing the secondary vibration damping between the hanger and the hanging trough.

其中，第一弹性垫包括第一侧壁、第一连接部、连接壁、第二连接部和第二侧壁，第一侧壁、连接壁和第二侧壁可以相互平行，且第一侧壁与连接壁能够通过第一连接部连接形成第一U形槽，第二侧壁与连接壁能够通过第二连接部连接形成第二U形槽。Wherein, the first elastic pad includes a first side wall, a first connecting portion, a connecting wall, a second connecting portion and a second side wall. The first side wall, the connecting wall and the second side wall may be parallel to each other, and the first side The wall and the connecting wall can be connected through the first connecting portion to form a first U-shaped groove, and the second side wall and the connecting wall can be connected through the second connecting portion to form a second U-shaped groove.

其中，第一弹性垫的第一侧壁的厚度、连接壁的厚度与支撑臂的厚度总和可以等于挂槽上相对的两个内壁之间的垂直距离，以避免第一弹性垫与固定框架21之间可能发生的晃动。Wherein, the sum of the thickness of the first side wall of the first elastic pad, the thickness of the connecting wall and the thickness of the support arm may be equal to the vertical distance between the two opposite inner walls of the hanging groove, so as to avoid the first elastic pad and the fixed frame 21 The shaking that may occur between.

需要说明的是，为了实现第一弹性垫的第一U形槽能够扣在支撑臂，第二U形槽能够扣在挂槽的侧壁上，第一弹性垫的第一侧壁与连接壁之间的垂直距离可以等于挂架的支撑臂的厚度，第一弹性垫的第二侧壁与连接壁之间的垂直距离可以大于或等于挂槽的侧壁的厚度。It should be noted that, in order to realize that the first U-shaped groove of the first elastic pad can be buckled on the support arm, the second U-shaped groove can be buckled on the side wall of the hanging groove, and the first side wall of the first elastic pad and the connecting wall The vertical distance therebetween may be equal to the thickness of the support arm of the hanger, and the vertical distance between the second side wall of the first elastic pad and the connecting wall may be greater than or equal to the thickness of the side wall of the hanging groove.

其中，当第一弹性垫的第二侧壁与连接壁之间的垂直距离等于挂槽的侧壁的厚度时，第一弹性垫的第二U形槽能够更加紧密地扣在挂槽的侧壁上，以进一步紧固挂架与固定框架21之间的连接。当第一弹性垫的第二侧壁与连接壁之间的垂直距离大于挂槽的侧壁的厚度时，可以便于挂装固定框架21时，挂槽能够顺利卡入第一弹性垫的第二侧壁与连接壁之间的空隙。Wherein, when the vertical distance between the second side wall of the first elastic pad and the connecting wall is equal to the thickness of the side wall of the hanging groove, the second U-shaped groove of the first elastic pad can be more tightly buckled on the side of the hanging groove On the wall to further tighten the connection between the hanger and the fixed frame 21. When the vertical distance between the second side wall of the first elastic pad and the connecting wall is greater than the thickness of the side wall of the hanging groove, it is convenient to hang the fixing frame 21, and the hanging groove can be smoothly locked into the second elastic pad. The gap between the side wall and the connecting wall.

当然，为了实现第一弹性垫的第一U形槽能够扣在支撑臂，第二U形槽能够扣在挂槽的侧壁上，第一弹性垫的第一侧壁与连接壁之间的垂直距离也可以略小于挂架的支撑臂的厚度，第一弹性垫的第二侧壁与连接壁之间的垂直距离也可以略小于挂槽的侧壁的厚度，从而第一弹性垫与挂架之间，以及第一弹性垫与挂槽之间的配合方式可以为过盈配合，可以保证挂架、第一弹性垫和固定框架21之间的紧固性。Of course, in order to realize that the first U-shaped groove of the first elastic pad can be buckled on the support arm, the second U-shaped groove can be buckled on the side wall of the hanging groove. The vertical distance may also be slightly smaller than the thickness of the support arm of the hanger, and the vertical distance between the second side wall of the first elastic pad and the connecting wall may also be slightly smaller than the thickness of the side wall of the hanging groove, so that the first elastic pad and the hanging The fit between the racks and between the first elastic pad and the hanging groove can be interference fit, which can ensure the tightness between the hanging rack, the first elastic pad and the fixed frame 21.

在一些实施例中，第一弹性垫的第二侧壁与连接壁之间的第二连接部可以通过双面胶固定在挂架的支撑平台上，双面胶可以避免第一弹性垫的移位和脱落。第一弹性垫的第一侧壁和连接壁也可以通过双面胶固定在挂架的支撑臂上，以实现第一弹性垫更加紧密的固定。In some embodiments, the second connecting portion between the second side wall of the first elastic pad and the connecting wall can be fixed on the support platform of the hanger by double-sided tape, which can prevent the first elastic pad from moving. Bit and fall off. The first side wall and the connecting wall of the first elastic pad can also be fixed on the support arm of the hanger by double-sided tape, so as to achieve a tighter fixation of the first elastic pad.

在一些实施例中，第一弹性垫的硬度可以位于硬度阈值范围。硬度阈值范围可以为保证第一弹性垫不易变形且具有一定吸振能力的硬度范围。如果第一弹性垫的硬度太低，在外力作用下容易变形，无法紧密扣住挂架和固定框架21，容易造成固定框架21的晃动和倾斜，导致固定框架21容易掉落。如果第一弹性垫的硬度太高，第一弹性垫的吸收振动能力会减弱。示例地，第一弹性垫的硬度可以控制在邵氏硬度30度至40度范围内。In some embodiments, the hardness of the first elastic pad may be in the hardness threshold range. The hardness threshold range may be a hardness range that ensures that the first elastic pad is not easily deformed and has a certain vibration absorbing ability. If the hardness of the first elastic pad is too low, it will be easily deformed under the action of external force, and it will not be able to tightly buckle the hanger and the fixed frame 21, which will easily cause the fixed frame 21 to shake and tilt, which will cause the fixed frame 21 to fall easily. If the hardness of the first elastic pad is too high, the vibration absorbing ability of the first elastic pad will be weakened. For example, the hardness of the first elastic pad can be controlled within a range of 30 to 40 degrees Shore hardness.

在一些实施例中，第一弹性垫的第一U型槽的开口边缘和第二U形槽的开口边缘均可以设置倒角，以便于安装时第一U形槽能够顺利的扣在支撑臂上，第二U形槽能够顺利的扣在挂槽的侧壁上。当然，第一弹性垫上的第一连接部上与第一侧壁和连接壁连接的两端也可以设置倒角，以便于第一弹性垫的第一侧壁和连接壁能够更顺利的伸入挂槽。In some embodiments, the opening edge of the first U-shaped groove and the opening edge of the second U-shaped groove of the first elastic pad can be chamfered, so that the first U-shaped groove can be smoothly buckled on the support arm during installation. On the upper side, the second U-shaped groove can be smoothly buckled on the side wall of the hanging groove. Of course, the two ends connected to the first side wall and the connecting wall on the first connecting portion of the first elastic pad can also be chamfered, so that the first side wall and the connecting wall of the first elastic pad can more smoothly extend in Hanging slot.

在一些实施例中，每个支撑机构还可以包括第二弹性垫和固定件；挂架的固定臂上设置有通孔，第二弹性垫的侧壁设置有一圈凹槽，挂架的固定臂能够基于通孔卡进凹槽，固定件穿过通孔和第二弹性垫，且与支撑体连接。In some embodiments, each supporting mechanism may further include a second elastic pad and a fixing member; the fixing arm of the hanger is provided with a through hole, the side wall of the second elastic pad is provided with a ring of grooves, and the fixing arm of the hanger is provided with a through hole. It can be inserted into the groove based on the through hole, and the fixing member passes through the through hole and the second elastic pad, and is connected with the support body.

其中，第二弹性垫的材料可以为硅胶或其他材料，只要具有缓冲吸振和承载能力即可。这样，由于第二弹性垫可以避免挂架的固定臂与固定件之间，以及避免挂架的固定臂与支撑体之间的硬性接触，且第二弹性垫具有缓冲吸振的作用，从而可以避免固定件与固定臂之间，以及支撑体与固定臂之间杂音的产生，从而实现挂架与支撑体之间的减振。Wherein, the material of the second elastic pad can be silica gel or other materials, as long as it has shock-absorbing and bearing capacity. In this way, because the second elastic pad can avoid the rigid contact between the fixed arm of the hanger and the fixing member, and between the fixed arm of the hanger and the support body, and the second elastic pad has the function of buffering and absorbing vibration, which can avoid The noise is generated between the fixed part and the fixed arm, and between the support body and the fixed arm, so as to realize the vibration reduction between the hanger and the support body.

其中，第二弹性垫的端面可以为圆形、正方形或其他形状。为了使第二弹性垫能够基于挂架上的通孔紧密镶嵌在挂架的固定臂上，第二弹性垫的凹槽处的横截面的形状和大小可以与挂架上的通孔的形状和大小相同，通孔可以为圆形、正方形或其他形状。Wherein, the end surface of the second elastic pad may be round, square or other shapes. In order to enable the second elastic pad to be tightly inlaid on the fixed arm of the hanger based on the through hole on the hanger, the shape and size of the cross section of the groove of the second elastic pad can be the same as the shape of the through hole on the hanger. The size is the same, and the through holes can be round, square or other shapes.

其中，固定件可以包括固定螺钉或其他固定体，只要可以实现将第二弹性垫和挂架钉紧在支撑体上即可。Wherein, the fixing member may include fixing screws or other fixing bodies, as long as the second elastic pad and the hanger can be nailed to the support body.

在一些实施例中，每个支撑机构还可以包括垫片，垫片套在固定件上，且能够压紧在第二弹性垫的端面。In some embodiments, each supporting mechanism may further include a gasket, which is sleeved on the fixing member and can be compressed on the end surface of the second elastic gasket.

其中，当固定件为螺钉时，垫片可以套在固定螺钉的螺杆上，并与螺钉头接触，被螺钉头压紧在第二弹性垫的端面。Wherein, when the fixing part is a screw, the washer can be sleeved on the screw rod of the fixing screw, and contact with the screw head, and be pressed against the end surface of the second elastic pad by the screw head.

在实际使用过程中，第二弹性垫的材质较软，挂架在受到垂直于第二弹性垫端面方向的外力时，会而施加给第二弹性垫一定的力，容易使第二弹性垫产生弹性变形，进而挂架容易基于通孔脱出第二弹性垫。因此，垫片的尺寸可以大于通孔的尺寸，从而可以阻挡挂架的脱出，同时可以将外力分配到面积较大的垫片上，使第二弹性垫不易产生变形。另外，垫片的形状也可以为圆形、正方形或其他形状。In actual use, the material of the second elastic pad is relatively soft. When the hanger is subjected to an external force perpendicular to the end surface of the second elastic pad, it will apply a certain force to the second elastic pad, which is easy to cause the second elastic pad to produce It is elastically deformed, so that the hanger is easily detached from the second elastic pad based on the through hole. Therefore, the size of the gasket can be larger than the size of the through hole, so as to prevent the hanger from coming out, and at the same time, the external force can be distributed to the gasket with a larger area, so that the second elastic gasket is not easily deformed. In addition, the shape of the gasket may also be round, square or other shapes.

其中，垫片可以通过压力铸造工艺制作，表面较为光滑，精度较高，当然，垫片也可以通过其他制造工艺制成，本实用新型实施例对此不做限定。Among them, the gasket can be made by a pressure casting process, with a relatively smooth surface and high precision. Of course, the gasket can also be made by other manufacturing processes, which is not limited in the embodiment of the present invention.

本实用新型实施例中，第一弹性垫可以实现投影屏幕2的一级减振和二级减振，第二弹性垫可以实现投影屏幕2的三级减振。第一弹性垫和第二弹性垫的组合使用可以使投影屏幕2的减振效果更加显著。In the embodiment of the present invention, the first elastic pad can realize the primary and secondary vibration reduction of the projection screen 2, and the second elastic pad can realize the three-stage vibration reduction of the projection screen 2. The combined use of the first elastic pad and the second elastic pad can make the vibration reduction effect of the projection screen 2 more significant.

综上所述，设置有发声板23的投影屏幕2兼具画面显示和声音播放的双重物理功能，投影***不再需要使用传统扬声器，这种发声板23和光学屏幕22结合使用的方式，可以达到EVS(Excited Voicing Screen：激音屏)的效果。而固定在发声板23上的多个激励器24可以在不同位置激励发声板23，以使发声板23可以发出立体声弯曲声波。In summary, the projection screen 2 provided with the sound board 23 has the dual physical functions of picture display and sound playback. The projection system no longer needs to use traditional speakers. This combination of sound board 23 and optical screen 22 can be used. Achieve the effect of EVS (Excited Voicing Screen). The multiple exciters 24 fixed on the sounding board 23 can excite the sounding board 23 at different positions, so that the sounding board 23 can emit stereo bending sound waves.

需要说明的是，激励器24驱动发声板23发声的方式具有多方面的优良性能。在音色方面，其发声板23的振幅为微米级小振幅，失真小且具有极好的瞬态响应，声音还原度高，并且有合适的力度、较高的清晰度和良好的空间深度，因而发声板23可以传出更加真实的乐器的声音或人声等。在声音传播方面，发声板23为面生源，具有均匀的声场，并且可以360度立体发声，其声压级随距离变化较慢，即使是很小的声音，也可以传播到更远的位置。在音频方面，发声板23发出的声音的频率及其宽广，使得最接近屏幕的听众不会遭受近距离声压的冲击，不会感觉过于吵闹，当听众在远处时依然可以听得清楚，在任意位置聆听均可获得相同音质的声音；当听众从屏幕的侧方移至屏幕正对位置处，听众所听到的高低音也不会有明显变化，同样不会有音量变小，音场收缩的感觉，甚至屏幕受到相当程度的遮挡，也不至于对音质产生明显影响。It should be noted that the way in which the exciter 24 drives the sound board 23 to emit sound has excellent performance in many aspects. In terms of timbre, the amplitude of the sounding board 23 is a micron-level small amplitude, small distortion and excellent transient response, high sound reproduction, and suitable strength, high clarity and good spatial depth, so The sound board 23 can transmit more realistic musical instrument sounds or human voices. In terms of sound propagation, the sounding board 23 is a surface source, has a uniform sound field, and can produce 360-degree stereo sound. Its sound pressure level changes slowly with distance, and even a small sound can be transmitted to a farther position. In terms of audio, the frequency of the sound emitted by the sounding board 23 is so wide that the listener closest to the screen will not suffer from close-range sound pressure, will not feel too noisy, and the listener can still hear clearly when they are far away. The same sound quality can be obtained by listening at any position; when the listener moves from the side of the screen to the position directly opposite the screen, the high and low sounds heard by the listener will not change significantly, and the volume will not decrease. The feeling of field contraction, even if the screen is blocked to a considerable extent, will not have a significant impact on the sound quality.

因此，当发声板23发出的声音伴随着图像发出时，可以带给用户强大的视听体验。另外，投影屏幕2呈薄板型屏幕，体积小、重量轻，可以给用户带来更好的观感。Therefore, when the sound emitted by the sound board 23 is emitted along with the image, it can bring a powerful audio-visual experience to the user. In addition, the projection screen 2 is a thin-plate screen with a small size and light weight, which can bring a better look and feel to the user.

本申请实施例中，将光学屏幕贴合在发声板的第一侧，这样在投影设备发出投影光线至光学屏幕时，光学屏幕可以对该投影光线进行进行反射，从而在光学屏幕上实现画面的投影。另外，由于发声板上固定有与投影设备电连接的一个或多个激励器，这样，投影设备可以驱动激励器振动，从而通过激励器带动发声板共同振动，以通过发声板发出声音。由于发声板固定在固定框架上，光学屏幕贴合在发声板上，从而可以保证发声板光学屏幕处于同一区域，这样可以达到声音从画面发出的效果，避免了画面和声音不统一的情况，提高了投影***的投影效果。由于盖板扣在一个或多个激励器上，从而可以通过盖板减小每个激励器在沿远离发声板的方向上的振幅，从而减小了激励器振动时能量的损耗。第一弹性垫和第二弹性垫具有缓冲吸振的作用，有效避免投影屏幕因振动而产生杂音。In the embodiment of the present application, the optical screen is attached to the first side of the sound board, so that when the projection device emits the projection light to the optical screen, the optical screen can reflect the projection light, thereby realizing the picture on the optical screen projection. In addition, since one or more exciters electrically connected to the projection device are fixed on the sound board, the projection device can drive the exciter to vibrate, so that the exciter drives the sound board to vibrate together to emit sound through the sound board. Since the sound board is fixed on the fixed frame and the optical screen is attached to the sound board, it can ensure that the sound board and the optical screen are in the same area. This can achieve the effect of sound from the picture, avoiding the unevenness of the picture and the sound, and improving The projection effect of the projection system is improved. Since the cover plate is buckled on one or more exciters, the amplitude of each exciter in the direction away from the sounding plate can be reduced by the cover plate, thereby reducing the energy loss when the exciter vibrates. The first elastic pad and the second elastic pad have the function of buffering and absorbing vibration, effectively avoiding the noise of the projection screen due to vibration.

图2示例了本申请实施例的一种投影屏幕的后视结构示意图，图3示例了本申请实施例的一种投影屏幕的侧视结构示意图。如图2和图3所示，投影屏幕包括：固定框架21、光学屏幕22、发声板23、一个或多个激励器24、盖板25和多个弹性连接件26；光学屏幕22贴合在发声板23的第一侧，一个或多个激励器24固定在发声板23的第二侧，盖板25扣在一个或多个激励器24上，发声板23的边缘能够包裹固定框架21的边缘，且发声板23通过固定件25与固定框架21连接；光学屏幕22用于接收投影设备1发出的投影光线，并进行画面显示，一个或多个激励器24用于与投影设备1电连接，一个或多个激励器24能够激发发声板23震动以发出声音。FIG. 2 illustrates a schematic diagram of a rear view structure of a projection screen according to an embodiment of the present application, and FIG. 3 illustrates a schematic diagram of a side view structure of a projection screen according to an embodiment of the present application. As shown in Figures 2 and 3, the projection screen includes: a fixed frame 21, an optical screen 22, a sounding plate 23, one or more exciters 24, a cover plate 25 and a plurality of elastic connectors 26; the optical screen 22 is attached to On the first side of the sounding plate 23, one or more exciters 24 are fixed on the second side of the sounding plate 23, the cover plate 25 is buckled on the one or more exciters 24, and the edge of the sounding plate 23 can wrap the fixed frame 21 Edge, and the sound board 23 is connected to the fixed frame 21 through the fixing member 25; the optical screen 22 is used to receive the projection light emitted by the projection device 1 and display the picture, and one or more exciters 24 are used to electrically connect to the projection device 1 , One or more exciters 24 can excite the sound board 23 to vibrate to emit sound.

需要说明的是，本申请实施例中所涉及的固定框架、光学屏幕、发声板、一个或多个激励器、盖板和多个弹性连接件的结构可以与上述实施例所述的固定框架、光学屏幕、发声板、一个或多个激励器、盖板和多个弹性连接件的结构相同或相似，本申请实施例对此不再赘述。It should be noted that the structure of the fixed frame, the optical screen, the sound board, one or more exciters, the cover plate, and the multiple elastic connectors involved in the embodiments of the present application can be the same as the fixed frame, The structures of the optical screen, the sound board, one or more exciters, the cover plate and the multiple elastic connecting members are the same or similar, which will not be repeated in the embodiment of the present application.

本申请实施例中，将光学屏幕贴合在发声板的第一侧，这样在投影设备发出投影光线至光学屏幕时，光学屏幕可以对该投影光线进行进行反射，从而在光学屏幕上实现画面的投影。另外，由于发声板上固定有与投影设备电连接的一个或多个激励器，这样，投影设备可以驱动激励器振动，从而通过激励器带动发声板共同振动，以通过发声板发出声音。由于发声板固定在固定框架上，光学屏幕贴合在发声板上，从而可以保证发声板光学屏幕处于同一区域，这样可以达到声音从画面发出的效果，避免了画面和声音不统一的情况，提高了投影***的投影效果。In the embodiment of the present application, the optical screen is attached to the first side of the sound board, so that when the projection device emits the projection light to the optical screen, the optical screen can reflect the projection light, thereby realizing the picture on the optical screen projection. In addition, since one or more exciters electrically connected to the projection device are fixed on the sound board, the projection device can drive the exciter to vibrate, so that the exciter drives the sound board to vibrate together to emit sound through the sound board. Since the sound board is fixed on the fixed frame, and the optical screen is attached to the sound board, it can ensure that the sound board and the optical screen are in the same area, which can achieve the effect of sound from the picture, avoid the inconsistency of the picture and the sound, and improve The projection effect of the projection system is improved.

以上所述仅为本申请的可选实施例，并不用以限制本申请，凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。The above are only optional embodiments of this application and are not intended to limit this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection of this application. Within range.

Claims

一种投影***，其特征在于，所述投影***包括：投影设备和投影屏幕，所述投影屏幕包括固定框架、光学屏幕、发声板、一个或多个激励器、盖板和多个弹性连接件；A projection system, characterized in that the projection system includes: a projection device and a projection screen, the projection screen includes a fixed frame, an optical screen, a sound board, one or more exciters, a cover plate, and a plurality of elastic connectors ；

所述光学屏幕贴合在所述发声板的第一侧，所述一个或多个激励器固定在所述发声板的第二侧，所述盖板扣在所述一个或多个激励器上，所述发声板的边缘能够包裹所述固定框架的边缘，且所述发声板通过所述多个弹性连接件与所述固定框架连接；The optical screen is attached to the first side of the sounding plate, the one or more exciters are fixed on the second side of the sounding plate, and the cover plate is buckled on the one or more exciters , The edge of the sounding board can wrap the edge of the fixed frame, and the sounding board is connected to the fixed frame through the plurality of elastic connectors;

所述投影设备与所述一个或多个激励器电连接，且用于发出投影光线至所述光学屏幕，所述一个或多个激励器能够激发所述发声板震动以发出声音。The projection device is electrically connected to the one or more exciters, and is used to emit projection light to the optical screen, and the one or more exciters can excite the sound board to vibrate to emit sound.
根据权利要求1所述的投影***，其特征在于，所述发声板包括第一蒙皮、第二蒙皮和蜂窝芯板，所述蜂窝芯板粘紧在所述第一蒙皮和所述第二蒙皮之间；The projection system according to claim 1, wherein the sound board comprises a first skin, a second skin and a honeycomb core board, and the honeycomb core board is adhered to the first skin and the honeycomb core board. Between the second skin;

所述光学屏幕贴合在所述第一蒙皮上远离所述蜂窝芯板的一侧，所述一个或多个激励器固定在所述第二蒙皮上远离所述蜂窝芯板的一侧；The optical screen is attached to the side of the first skin away from the honeycomb core plate, and the one or more exciters are fixed on the side of the second skin away from the honeycomb core plate ；

所述第一蒙皮和/或所述第二蒙皮的边缘包裹所述固定框架的边缘，且所述第一蒙皮和/或所述第二蒙皮通过所述多个弹性连接件与所述固定框架连接。The edges of the first skin and/or the second skin wrap the edges of the fixed frame, and the first skin and/or the second skin are connected to each other through the plurality of elastic connectors The fixed frame is connected.
根据权利要求2所述的投影***，其特征在于，所述第一蒙皮和/或所述第二蒙皮的边缘伸出所述蜂窝芯板的边缘，所述第一蒙皮和/或所述第二蒙皮上伸出所述蜂窝芯板的边缘的部分包裹所述固定框架的边缘，且通过所述多个弹性连接件与所述固定框架连接。The projection system according to claim 2, wherein the edges of the first skin and/or the second skin protrude from the edges of the honeycomb core panel, and the first skin and/or The part of the second skin that protrudes from the edge of the honeycomb core board wraps the edge of the fixed frame, and is connected to the fixed frame through the plurality of elastic connectors.
根据权利要求1所述的投影***，其特征在于，所述发声板包括第一蒙皮、第二蒙皮、蜂窝芯板和软质连接件；The projection system according to claim 1, wherein the sound board comprises a first skin, a second skin, a honeycomb core board, and a flexible connector;

所述蜂窝芯板粘紧在所述第一蒙皮和所述第二蒙皮之间，所述光学屏幕贴合在所述第一蒙皮上远离所述蜂窝芯板的一侧，所述一个或多个激励器固定在所述第二蒙皮上远离所述蜂窝芯板的一侧；The honeycomb core board is adhered tightly between the first skin and the second skin, the optical screen is attached to the first skin on the side away from the honeycomb core board, the One or more exciters are fixed on the side of the second skin away from the honeycomb core panel;

所述软质连接件呈回形结构，所述软质连接件环绕所述第二蒙皮的边缘，且所述软质连接件的内边缘与所述第二蒙皮固定连接，所述软质连接件的外边缘包裹所述固定框架，且通过所述多个弹性连接件与所述固定框架连接。The soft connecting piece has a looped structure, the soft connecting piece surrounds the edge of the second skin, and the inner edge of the soft connecting piece is fixedly connected to the second skin, and the soft connecting piece is fixedly connected to the second skin. The outer edge of the mass connecting piece wraps the fixed frame, and is connected to the fixed frame through the plurality of elastic connecting pieces.
根据权利要求2-4任一所述的投影***，其特征在于，所述第一蒙皮的厚度大于所述第二蒙皮的厚度。The projection system according to any one of claims 2-4, wherein the thickness of the first skin is greater than the thickness of the second skin.
根据权利要求1所述的投影***，其特征在于，所述发声板的边缘设置有与所述多个弹性连接件一一对应的多个通孔，每个弹性连接件的第一端与对应的通孔连接，每个弹性连接件的第二端与所述固定框架连接。The projection system according to claim 1, wherein the edge of the sound board is provided with a plurality of through holes corresponding to the plurality of elastic connecting members one by one, and the first end of each elastic connecting member corresponds to The second end of each elastic connecting piece is connected with the fixed frame.
根据权利要求6所述的投影***，其特征在于，所述投影屏幕还包括多个鸡眼扣，所述多个鸡眼扣与所述多个通孔一一对应，每个鸡眼扣包裹对应的通孔的边缘，每个弹性连接件的第一端与对应的鸡眼扣连接。The projection system according to claim 6, wherein the projection screen further comprises a plurality of eyelet buttons, the multiple eyelet buttons correspond to the plurality of through holes one-to-one, and each eyelet button wraps a corresponding through hole. On the edge of the hole, the first end of each elastic connecting piece is connected with the corresponding eyelet button.
根据权利要求1所述的投影***，其特征在于，所述光学屏幕通过双面胶贴合在所述发声板上。The projection system according to claim 1, wherein the optical screen is attached to the sound board by double-sided tape.
根据权利要求1所述的投影***，其特征在于，所述投影屏幕还包括与所述一个或多个激励器一一对应的一个或多个泡棉胶，所述一个或多个激励器分别通过对应的泡棉胶粘接在所述发声板上。The projection system according to claim 1, wherein the projection screen further comprises one or more foam glues corresponding to the one or more exciters, and the one or more exciters respectively It is adhered to the sound board through the corresponding foam glue.
根据权利要求1所述的投影***，其特征在于，所述发声板为一整块板，所述发声板的面积小于或等于所述光学屏幕的面积；The projection system according to claim 1, wherein the sound board is a whole board, and the area of the sound board is less than or equal to the area of the optical screen;

或者，所述发声板包括多块子发声板，所述多块子发声板一体式连接，且能够在所述一个或多个激励器的作用下独立发声，所述多块子发声板的总面积小于或等于所述光学屏幕的面积。Alternatively, the sounding board includes a plurality of sub-sounding boards, which are integrally connected and capable of independently sounding under the action of the one or more exciters. The total of the plurality of sub-sounding boards is The area is less than or equal to the area of the optical screen.
一种投影屏幕，其特征在于，所述投影屏幕包括：固定框架、光学屏幕、发声板、一个或多个激励器、盖板和多个弹性连接件；A projection screen, characterized in that the projection screen comprises: a fixed frame, an optical screen, a sound board, one or more exciters, a cover plate, and a plurality of elastic connectors;

所述光学屏幕贴合在所述发声板的第一侧，所述一个或多个激励器固定在所述发声板的第二侧，所述盖板扣在所述一个或多个激励器上，所述发声板的边缘能够包裹所述固定框架的边缘，且所述发声板通过所述多个弹性连接件与所述固定框架连接；The optical screen is attached to the first side of the sounding plate, the one or more exciters are fixed on the second side of the sounding plate, and the cover plate is buckled on the one or more exciters , The edge of the sounding board can wrap the edge of the fixed frame, and the sounding board is connected to the fixed frame through the plurality of elastic connectors;

所述光学屏幕用于接收所述投影设备发出的投影光线，并进行画面显示，所述一个或多个激励器用于与投影设备电连接，所述一个或多个激励器能够激发所述发声板震动以发出声音。The optical screen is used to receive the projection light emitted by the projection device and perform screen display, the one or more exciters are used to electrically connect with the projection device, and the one or more exciters can excite the sound board Vibrate to make a sound.