Projection screen with sound amplification function

Abstract

The utility model discloses a projection screen with a sound amplification function. The projection screen comprises a screen rolling rod; an inner cavity of the projection mechanism is fixedly connected with the surface of the screen winding rod, the projection mechanism comprises a hollow rod sleeve, a screen body, fixing blocks and a working plate, the inner cavity of the hollow rod sleeve is movably connected with the screen body, and the left side and the right side of the surface of the screen winding rod are fixedly sleeved with the fixing blocks. And the right side of the fixed block is fixedly connected with a working plate. The small air cylinder, the supporting block, the supporting rod, the L-shaped plate, the fixing plate, the control plate, the vertical plate and the supporting spring are used in cooperation, the small air cylinder is started to drive the supporting block to move backwards, and the supporting block moves backwards to drive the supporting rod and the L-shaped plate to move rightwards to be away from the fixing plate; the control panel pulls the vertical plate to drive the vertical plate to move forwards to extrude the supporting spring, so that the vertical plate is far away from the fixed plate to be detached, and the experience effect of the projection screen is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of projection screens, in particular to a projection screen with a sound amplification function. Background Art

[0002] A projection screen is a screen used for projection equipment, usually made of reflective and transparent materials. It reflects images and light through the characteristics of reflection, extinction, refraction and transmission, thereby achieving the effect of optical projection. Projection screens are usually divided into many types, including wall projection, scroll projection, portable projection and ceiling projection. They can not only be used for commercial presentations, education and training, home theaters and other occasions, but are also widely used in stage performances, cinemas and other entertainment industries.

[0003] Patent Publication No.: CN201853057U. The utility model discloses a projection screen with a sound amplification function, which relates to a projection device, including a screen, a reel, a motor, and a box body. The reel and the motor are placed in the box body, the output end of the motor is connected to the reel, and one end of the screen is wound on the reel. It is characterized in that: a group of sound amplification equipment is fixed in the box body, the sound amplification equipment is composed of a loudspeaker and a control system, the sound amplification equipment and the microphone transmit signals by wired or wireless means, and the sound amplification equipment can also be fixed on the outside of the box body. The beneficial effect of the utility model is that by directly installing the sound amplification equipment on the projection screen and connecting a microphone wirelessly or by wire, the sound can be directly transmitted from the projection screen without configuring audio equipment separately. The structure is simple, the manufacturing is convenient, the cost is low, and it is very economical and practical.

[0004] However, during the use of existing projection screen devices, most of the mounting parts of the sound amplification device cannot be quickly disassembled, which makes it difficult to replace the sound amplifier after it is damaged after long-term use, thereby reducing the projection screen experience and the experience effect. Therefore, in order to solve the above problem, a projection screen with a sound amplification function is proposed. Utility Model Content

[0005] In order to solve the problems raised in the above-mentioned background technology, the purpose of the present utility model is to provide a projection screen with a sound amplification function, which has the advantage of quick disassembly of the loudspeaker mounting parts, and solves the problem of existing projection screen devices, in which most of the sound amplification device mounting parts cannot be quickly disassembled, resulting in the loudspeaker being difficult to replace after being damaged after long-term use, thereby reducing the projection screen experience.

[0006] To achieve the above object, the utility model provides the following technical solution: a projection screen with a sound amplification function, comprising:

[0007] Screen reel rod;

[0008] A projection mechanism, wherein the inner cavity of the projection mechanism is fixedly connected to the surface of the screen reeling rod, the projection mechanism comprises a hollow rod sleeve, a screen body, a fixed block and a working plate, the inner cavity of the hollow rod sleeve is movably connected to the screen body, the left and right sides of the screen reeling rod surface are fixedly sleeved with fixed blocks, and the right side of the fixed block is fixedly connected to the working plate;

[0009] A sound amplifying mechanism, the left side of the sound amplifying mechanism and the right side of the working plate are slidably connected, the sound amplifying mechanism comprises a fixed plate, a fixed rod, a connecting plate, a loudspeaker, an L-shaped plate, a support rod, a support block and a small cylinder, the top and bottom of the right side of the fixed plate are fixedly connected with the fixed rod, the right side of the fixed rod is fixedly connected with the connecting plate, the right side of the connecting plate is fixedly connected with the loudspeaker, the top and bottom of the back end of the right side of the fixed plate are slidably connected with the L-shaped plate, the top and bottom of the back end of the L-shaped plate are fixedly connected with the support rod, the back end of the support rod is fixedly connected with the support block, and the back end of the support block is fixedly connected with a small cylinder.

[0010] As a preferred embodiment of the utility model, a connecting block is fixedly connected to the back end of the small cylinder, and the left side of the connecting block is fixedly connected to the right side of the working plate.

[0011] As a preferred embodiment of the present invention, the top and bottom of the right back end of the L-shaped plate and the positions corresponding to the L-shaped plate are fixedly connected with L-shaped baffles, and the back end of the L-shaped baffle is in contact with the front end of the L-shaped plate.

[0012] As a preferred embodiment of the utility model, the top and bottom of the right side of the working plate are fixedly connected with an L-shaped slide plate, the inner side of the L-shaped slide plate is slidably connected with a vertical plate, the front end of the L-shaped slide plate is fixedly connected with a long plate, the front end of the vertical plate is fixedly connected with a control plate, and the front end of the control plate passes through the front end of the long plate.

[0013] As a preferred embodiment of the utility model, a rectangular baffle is fixedly connected to the back end of the L-shaped slide plate, and the bottom of the front end of the rectangular baffle is in contact with the back end of the vertical plate.

[0014] As a preferred embodiment of the present invention, the top and bottom of the front end of the vertical plate are fixedly connected with a support spring, and the front end of the support spring is fixedly connected to the back end of the long board.

[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0016] 1. The utility model cooperates with a small cylinder, a support block, a support rod, an L-shaped plate, a fixed plate, a control plate, a vertical plate and a support spring. The small cylinder is started to drive the support block to move backward, and the support block moves backward to drive the support rod and the L-shaped plate to move to the right away from the fixed plate. The control plate pulls the vertical plate to drive the vertical plate to move forward to squeeze the support spring so that the vertical plate is away from the fixed plate for disassembly, thereby improving the experience effect of the projection screen.

[0017] 2. The utility model can assist the small cylinder in working by setting the connecting block, thus preventing the small cylinder from failing to work normally. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 For this utility model Figure 1 Schematic diagram of the three-dimensional explosion structure of the middle fixed block;

[0020] Figure 3 For this utility model Figure 2 Schematic diagram of the three-dimensional explosion structure of the middle working plate;

[0021] Figure 4 For this utility model Figure 2 Schematic diagram of the three-dimensional explosion structure of the middle vertical plate;

[0022] Figure 5 For this utility model Figure 2 Schematic diagram of the three-dimensional explosion structure of small and medium-sized cylinders.

[0023] In the figure: 1. screen reel rod; 2. projection mechanism; 201. hollow rod sleeve; 202. screen body; 203. fixing block; 204. working plate; 3. sound amplification mechanism; 301. fixing plate; 302. fixing rod; 303. connecting plate; 304. loudspeaker; 305. L-shaped plate; 306. supporting rod; 307. supporting block; 308. small cylinder; 4. connecting block; 5. L-shaped baffle; 6. L-shaped slide plate; 7. vertical plate; 8. long plate; 9. control plate; 10. rectangular baffle; 11. supporting spring. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figures 1 to 5As shown, the utility model provides a projection screen with a sound amplification function, comprising:

[0026] Screen reeling rod 1;

[0027] The projection mechanism 2, the inner cavity of the projection mechanism 2 and the surface of the screen reeling rod 1 are fixedly connected, the projection mechanism 2 comprises a hollow rod sleeve 201, a screen body 202, a fixing block 203 and a working plate 204, the inner cavity of the hollow rod sleeve 201 is movably connected with the screen body 202, the left and right sides of the surface of the screen reeling rod 1 are fixedly sleeved with the fixing block 203, and the right side of the fixing block 203 is fixedly connected with the working plate 204;

[0028] Amplifying mechanism 3, the left side of the amplifying mechanism 3 and the right side of the working plate 204 are slidably connected, the amplifying mechanism 3 includes a fixed plate 301, a fixed rod 302, a connecting plate 303, a loudspeaker 304, an L-shaped plate 305, a support rod 306, a support block 307 and a small cylinder 308, the top and bottom of the right side of the fixed plate 301 are fixedly connected with the fixed rod 302, the right side of the fixed rod 302 is fixedly connected with the connecting plate 303, the right side of the connecting plate 303 is fixedly connected with the loudspeaker 304, the top and bottom of the back end of the right side of the fixed plate 301 are slidably connected with the L-shaped plate 305, the top and bottom of the back end of the L-shaped plate 305 are fixedly connected with the support rod 306, the back end of the support rod 306 is fixedly connected with the support block 307, and the back end of the support block 307 is fixedly connected with the small cylinder 308.

[0029] refer to Figure 5 The back end of the small cylinder 308 is fixedly connected to a connecting block 4, and the left side of the connecting block 4 is fixedly connected to the right side of the working plate 204.

[0030] As a technical optimization solution of the present invention, the connection block 4 is provided to assist the small cylinder 308 in working, thereby preventing the small cylinder 308 from failing to work normally.

[0031] refer to Figure 5 The top and bottom of the right back end of the L-shaped plate 305 and the position corresponding to the L-shaped plate 305 are fixedly connected with an L-shaped baffle plate 5, and the back end of the L-shaped baffle plate 5 is in contact with the front end of the L-shaped plate 305.

[0032] As a technical optimization solution of the present invention, the provision of the L-shaped baffle 5 can assist the L-shaped plate 305 in working and limit the movement of the L-shaped plate 305 .

[0033] refer to Figure 4 The top and bottom of the right side of the working plate 204 are fixedly connected with an L-shaped slide plate 6, the inner side of the L-shaped slide plate 6 is slidably connected with a vertical plate 7, the front end of the L-shaped slide plate 6 is fixedly connected with a long plate 8, the front end of the vertical plate 7 is fixedly connected with a control plate 9, and the front end of the control plate 9 passes through the front end of the long plate 8.

[0034] As a technical optimization solution of the utility model, the L-shaped slide plate 6, the vertical plate 7, the long plate 8 and the control plate 9 are arranged to assist the work plate 204 and avoid the front end of the right side of the fixed plate 301 from being unable to be fixed.

[0035] refer to Figure 4 The back end of the L-shaped slide plate 6 is fixedly connected with a rectangular baffle 10 , and the bottom of the front end of the rectangular baffle 10 contacts the back end of the vertical plate 7 .

[0036] As a technical optimization solution of the utility model, the rectangular baffle 10 can assist the L-shaped slide plate 6 in working, thereby preventing the vertical plate 7 from popping out directly from the back of the L-shaped slide plate 6 through the support spring 11.

[0037] refer to Figure 4 The top and bottom of the front end of the vertical plate 7 are fixedly connected with a support spring 11, and the front end of the support spring 11 is fixedly connected to the back end of the long plate 8.

[0038] As a technical optimization solution of the present invention, the support spring 11 is provided to assist the vertical plate 7 in its operation, thereby preventing the vertical plate 7 from being unable to automatically move backwards and jamming the front end of the right side of the fixed plate 301 .

[0039] The working principle and use process of the utility model are as follows: when in use, the user starts the small cylinder 308 to drive the support block 307 to move backward, and the support block 307 moves backward to drive the support rod 306 and the L-shaped plate 305 to move to the right away from the fixed plate 301, and pulls the vertical plate 7 through the control plate 9 to drive the vertical plate 7 to move forward to squeeze the support spring 11 so that the vertical plate 7 is away from the fixed plate 301 for disassembly, and the same principle can be followed in reverse during installation.

[0040] In summary: the projection screen with a sound amplification function solves the problem of the existing projection screen device, in which most of the mounting parts of the sound amplification device cannot be quickly disassembled, resulting in the speaker being difficult to replace after being damaged after long-term use, thereby reducing the experience of the projection screen, through the coordinated use of the screen rolling rod 1, the projection mechanism 2, the hollow rod sleeve 201, the screen body 202, the fixed block 203 and the working plate 204, the sound amplification mechanism 3, the fixed plate 301, the fixed rod 302, the connecting plate 303, the loudspeaker 304, the L-shaped plate 305, the support rod 306, the support block 307, the small cylinder 308, the connecting block 4, the L-shaped baffle plate 5, the L-shaped slide plate 6, the vertical plate 7, the long plate 8, the control plate 9, the rectangular baffle plate 10 and the supporting spring 11.

[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A projection screen with a sound amplification function, characterized in that: include: Screen reeling rod (1); A projection mechanism (2), wherein an inner cavity of the projection mechanism (2) is fixedly connected to a surface of a screen reeling rod (1), the projection mechanism (2) comprising a hollow rod sleeve (201), a screen body (202), a fixing block (203) and a working plate (204), the inner cavity of the hollow rod sleeve (201) being movably connected to the screen body (202), the left and right sides of the surface of the screen reeling rod (1) being fixedly sleeved with fixing blocks (203), and the right side of the fixing block (203) being fixedly connected to the working plate (204); A sound amplifying mechanism (3), wherein the left side of the sound amplifying mechanism (3) is slidably connected to the right side of the working plate (204), the sound amplifying mechanism (3) comprising a fixing plate (301), a fixing rod (302), a connecting plate (303), a loudspeaker (304), an L-shaped plate (305), a supporting rod (306), a supporting block (307) and a small cylinder (308), wherein the top and bottom of the right side of the fixing plate (301) are fixedly connected to the fixing rod (302), and the fixing rod (302) is A connecting plate (303) is fixedly connected to the right side, a loudspeaker (304) is fixedly connected to the right side of the connecting plate (303), an L-shaped plate (305) is slidably connected to the top and bottom of the back end of the right side of the fixing plate (301), a support rod (306) is fixedly connected to the top and bottom of the back end of the L-shaped plate (305), a support block (307) is fixedly connected to the back end of the support rod (306), and a small cylinder (308) is fixedly connected to the back end of the support block (307).

2. The projection screen with sound amplification function according to claim 1, characterized in that: The back end of the small cylinder (308) is fixedly connected to a connection block (4), and the left side of the connection block (4) is fixedly connected to the right side of the working plate (204).

3. The projection screen with sound amplification function according to claim 1, characterized in that: The top and bottom of the right back end of the L-shaped plate (305) and the positions corresponding to the L-shaped plate (305) are fixedly connected with an L-shaped baffle plate (5), and the back end of the L-shaped baffle plate (5) is in contact with the front end of the L-shaped plate (305).

4. The projection screen with sound amplification function according to claim 1, characterized in that: The top and bottom of the right side of the working plate (204) are both fixedly connected to an L-shaped slide plate (6), the inner side of the L-shaped slide plate (6) is slidably connected to a vertical plate (7), the front end of the L-shaped slide plate (6) is fixedly connected to a long plate (8), the front end of the vertical plate (7) is fixedly connected to a control plate (9), and the front end of the control plate (9) passes through the front end of the long plate (8).

5. The projection screen with sound amplification function according to claim 4, characterized in that: The back end of the L-shaped slide plate (6) is fixedly connected to a rectangular baffle plate (10), and the bottom of the front end of the rectangular baffle plate (10) is in contact with the back end of the vertical plate (7).

6. The projection screen with sound amplification function according to claim 4, characterized in that: The top and bottom of the front end of the vertical plate (7) are both fixedly connected to a support spring (11), and the front end of the support spring (11) is fixedly connected to the back end of the long plate (8).

Images