Novel conference sound box

Abstract

The invention discloses a novel conference loudspeaker box, and relates to the technical field of loudspeaker boxes, the novel conference loudspeaker box comprises a box body, a base is fixedly mounted at the bottom of the box body, a top plate is fixedly mounted at the top of the box body, a dustproof plate is fixedly mounted on the front surface of the box body, and a rolling box is rotatably mounted at the bottom of the base; a groove hole is formed in the back face of the winding box, and a rotating hole is formed in the side wall of the right side of the winding box. Through cooperation of the winding box, a lower winding disc, a connecting column, an upper winding disc, a rotating ring, a transmission strip, a rotating wheel, a wire, a fixing base, a rotating block, a protection frame, an arc-shaped plate, a limiting block, a limiting frame, an L-shaped limiting rod and a limiting plate, the connecting column can collect the wire at the same time; and a wire is wound on the outer wall of the connecting column, and the wire can be stored and hidden, so that winding of the wire is achieved, the neatness and professional appearance of a conference room are kept, and the flexibility and efficiency of conference room equipment are improved.

Description

Technical Field

[0001] The invention relates to the technical field of sound boxes, in particular to a novel conference sound box. Background Art

[0002] As modern enterprises continue to pursue meeting efficiency and quality, the demand for a new type of conference speaker is rising in the market. This speaker usually integrates advanced audio technologies such as noise cancellation, echo suppression and clear sound quality enhancement to provide a clearer and more natural meeting experience. It can meet the high standards of sound transmission in remote meetings, video conferences and large conference rooms, helping enterprises to communicate effectively both locally and globally.

[0003] Patent announcement number CN216960087U discloses a professional full-range conference speaker, which relates to the field of speaker technology, and in particular to a professional full-range conference speaker, including a main body, one side of the main body is connected to a roll-up shutter cover by a rotating shaft, a telescopic block is provided on the top of the shutter cover, a spherical bump is connected to the top of the telescopic block, and slots are provided on both sides of the upper part of the main body to cooperate with the spherical bump. The patent shields the front surface of the main body by the shutter cover, which can effectively prevent dust from accumulating on the front surface of the speaker to affect the appearance and broadcasting quality, thereby achieving better conference use effect.

[0004] However, the current professional full-range conference speakers have the following problems: when the speakers are in use, the wires are often placed on the ground, causing people to step on and damage the wires when passing by, and it is not convenient to reel up the wires. Therefore, we have proposed a new type of conference speaker. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a new conference speaker to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a new type of conference speaker, including a box body, a base is fixedly installed at the bottom of the box body, a top plate is fixedly installed at the top of the box body, a dustproof plate is fixedly installed at the front of the box body, a winding box is rotatably installed at the bottom of the base, a slot is opened on the back of the winding box, and a rotating hole is opened on the right side wall of the winding box, a lower winding disk is rotatably installed on the bottom surface of the inner wall of the winding box, a slot is opened on the outer wall of the lower winding disk, a connecting column is fixedly installed on the central end of the lower winding disk, an upper winding disk is fixedly installed on the top of the connecting column, and the top of the upper winding disk A swivel is fixedly installed, a rotating wheel is penetrated and rotatably installed on the side wall of the winding box, a transmission bar is rotatably installed on the outer wall of the swivel and the wheel, a wire is fixedly installed on the bottom of the box body, and the wire penetrates and is rotatably installed on the outer wall of the connecting column, a plug is provided at the end of the wire away from the box body, when the conference speaker is not needed, the personnel unplugs the plug and rotates the wheel, the wheel drives the transmission bar to rotate, the transmission bar drives the swivel to rotate, the swivel drives the connecting column to rotate, the connecting column drives the upper winding reel and the lower winding reel to rotate, a dust removal device is provided on the front of the box body to prevent dust accumulation, and sound amplification devices for sound amplification are provided on both sides of the front of the box body.

[0007] According to the above technical solution, a fixed seat is fixedly installed on the back of the winding box, a rotating block is rotatably installed on the inner wall of the fixed seat, a protective frame is fixedly installed on the top of the rotating block, and a plug is arranged on the top of the protective frame, an arc plate is fixedly installed on the side of the protective frame away from the box body, the arc plate is elastically arranged, a limiting block is fixedly installed on the outer wall of the rotating block close to the box body, a limiting frame is fixedly installed on the right side wall of the fixed seat, an L-shaped limiting rod is slidably installed on the inner wall of the limiting frame, one end of the L-shaped limiting rod away from the box body contacts the top surface of the limiting block, and one end of the L-shaped limiting rod close to the box body is fixedly installed with a limiting plate, and the limiting plate is connected to the slot of the lower winding disk. When the conference speaker needs to be used, the L-shaped limiting rod is pulled, and the L-shaped limiting rod is pulled out of the slot of the lower winding disk. The L-shaped limiting rod also releases the restriction of the limiting block at the same time, so that the limiting block drives the rotating block to rotate on the inner wall of the fixed seat, the rotating block drives the protective frame to rotate, and the protective frame drives the arc plate to rotate, and the arc plate will first contact the ground through free fall.

[0008] According to the above technical solution, the dust removal device includes a screw column, a threaded block, a shell, a sliding shell, a spring, a connecting rod and a brush. The screw column is rotatably installed at the bottom of the top plate, the screw column is driven by a motor, and the motor is fixedly installed on the top of the top plate. A threaded groove is provided on the outer wall of the screw column, the threaded block is threadedly connected to the outer wall of the screw column, the shell is fixedly installed on the outer wall of the threaded block, the sliding shell is slidably installed on the inner wall of the shell, the spring is fixedly installed on the inner wall of the shell away from the box body, the spring is in contact with the outer wall of the sliding shell, and the spring is elastically arranged. The connecting rod It is fixedly installed on the inner wall of the sliding shell, a spring is arranged between the connecting rod and the brush, and the brush contacts the outer wall of the dustproof plate, and the brush is slidably installed on the outer wall of the connecting rod. When the conference speaker is used for a long time, dust will accumulate on the dustproof plate and it needs to be cleaned. The motor is started, and the motor drives the screw column to rotate, the screw column drives the threaded block to move up and down, the threaded block drives the outer shell to move up and down, the outer shell drives the sliding shell to move up and down, the sliding shell drives the spring piece and the connecting rod to move up and down, the connecting rod drives the brush to move up and down, and after the brush leaves the restriction of the top plate, the elastic force of the spring piece pushes the sliding shell toward the direction of the box body.

[0009] According to the above technical solution, the dust removal device also includes a circular convex ball and a contact plate, wherein the circular convex ball is fixedly installed on the side wall of the brush away from the screw column, and the contact plate is fixedly installed on the bottom of the top plate away from the screw column. A plurality of evenly spaced triangular protrusions are arranged on the side of the contact plate close to the box body, and the triangular protrusions on the contact plate are located on the movement trajectory of the circular convex ball. When the brush moves up and down, the brush drives the circular convex ball to move up and down, and the circular convex ball contacts the triangular protrusion of the contact plate, so that the circular convex ball drives the brush to slide in the direction of the connecting rod, and then resets by the spring on the connecting rod.

[0010] According to the above technical solution, the sound amplification device includes a rotating shaft rod and a sound amplification board. The rotating shaft rod is fixedly installed on both sides of the outer wall of the box body. The sound amplification board torsion spring is connected to the outer wall of the rotating shaft rod. When the conference speaker is turned on, the sound amplification board is opened from both sides of the box body.

[0011] According to the above technical scheme, the sound amplification device also includes a movable frame, a limit plate, a connecting rod, an oblique plate and a resistance rod. The movable frame is slidably installed on the surface of the sound amplification board, the limit plate is fixedly installed at both ends of the movable frame, the connecting rod is fixedly installed at the opposite outer walls of the movable frame, the oblique plate is fixedly installed at the outer wall of the connecting rod close to the box body, the resistance rod is fixedly installed at the outer wall of the outer shell, and the inclined surface of the oblique plate is located on the movement trajectory of the resistance rod. When the dust removal device is in operation, the use of the speaker cannot be stopped. At this time, the brush will reduce the propagation of sound, and the outer shell drives the resistance rod to move downward, and the resistance rod resists the inclined surface of the oblique plate, so that the oblique plate drives the connecting rod to move outward, and the connecting rod drives the movable frame to move outward. The movable frame is restricted by the limit, so that the movable frame drives the sound amplification board to gather to the middle.

[0012] The present invention provides a new conference speaker, which has the following beneficial effects:

[0013] (1) The present invention cooperates with a winding box, a lower winding reel, a connecting column, an upper winding reel, a swivel, a transmission bar, a rotating wheel, a wire, a fixed seat, a rotating block, a protective frame, an arc plate, a limiting block, a limiting frame, an L-shaped limiting rod and a limiting plate, so that the connecting column can simultaneously reel in the wire and wrap the wire around the outer wall of the connecting column, so that the wire can be stored and hidden, thereby realizing the winding of the wire, maintaining the neatness and professional appearance of the conference room, and improving the flexibility and efficiency of the conference room equipment. The rotating block drives the protective frame to rotate, and the protective frame drives the arc plate to rotate. Through free fall, the arc plate will first contact the ground. The elastic setting of the arc plate provides a buffer for the protective frame. Through the setting of the protective frame, it can also prevent staff from stepping on the wire or causing unnecessary tripping risks when not in use, thereby extending the service life of the wire.

[0014] (2) The present invention sets a dust removal device so that the sliding shell drives the spring sheet and the connecting rod to move up and down, and the connecting rod drives the brush to move up and down. After the brush leaves the restriction of the top plate, the elastic force of the spring sheet pushes the sliding shell toward the box body, and the sliding shell drives the connecting rod to be pushed outward, and the brush is pushed out along with it. The brush moves up and down to brush away the dust on the surface of the dustproof plate, effectively removing the dust and dirt accumulated on the dustproof plate, thereby keeping the appearance of the box body clean and hygienic. The spring on the connecting rod is used for reset, so that the brush can move up and down and left and right at the same time, thereby further removing the dust and dirt accumulated on the dustproof plate, and at the same time preventing dust from entering the interior of the speaker and affecting the sound quality and the normal operation of the equipment.

[0015] (3) The present invention arranges a sound amplification device so that when the conference speaker is turned on, the sound amplification panels are opened from both sides of the box body. The sound amplification panels are arranged on the rotating shaft rod so that the sound will not be too dispersed during the use of the conference speaker, thereby enhancing the sound diffusion effect of the speaker and making the sound more evenly distributed in the conference room. The movable frame is restricted by the limit plate so that the movable frame drives the sound amplification panels to gather toward the middle. By setting the sound amplification panels to gather toward the middle, the sound amplification panels can further concentrate and direct the sound propagation, ensuring that the sound is more accurately projected to the audience area in the conference room, and further reducing the frequent reflection of the sound on the dust removal device, thereby enhancing the sound transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional front view schematic diagram of the present invention as a whole;

[0017] Figure 2 A three-dimensional bottom view schematic diagram of the present invention as a whole;

[0018] Figure 3 It is a cross-sectional schematic diagram of a local structure of the present invention;

[0019] Figure 4 For the present invention Figure 3 The enlarged schematic diagram of point A in the middle;

[0020] Figure 5 A three-dimensional schematic diagram of a dust removal device and a sound amplification device of the present invention;

[0021] Figure 6 is a cross-sectional schematic diagram of a dust removal device of the present invention;

[0022] Figure 7 For the present invention Figure 6 The enlarged schematic diagram of point B in the middle;

[0023] Figure 8 It is a cross-sectional schematic diagram of the sound amplification device of the present invention.

[0024] In the figure: 1, box; 11, base; 12, top plate; 13, dust plate; 21, winding box; 22, lower winding reel; 23, connecting column; 24, upper winding reel; 25, rotating ring; 26, transmission bar; 27, rotating wheel; 28, wire; 29, fixed seat; 210, rotating block; 211, protective frame; 212, arc plate; 213, limiting block; 214, limiting frame; 215, L-shaped Limit rod; 216, limit plate; 3, dust removal device; 31, screw column; 32, threaded block; 33, housing; 34, sliding shell; 35, spring piece; 36, connecting rod; 37, brush; 38, round convex ball; 39, contact plate; 4, sound amplification device; 41, rotating shaft rod; 42, sound amplification board; 43, movable frame; 44, limit plate; 45, connecting rod; 46, oblique plate; 47, contact rod. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] See also Figure 1-Figure 8 One embodiment of the present invention is: a new conference speaker, including a box body 1, a base 11 is fixedly installed at the bottom of the box body 1, a top plate 12 is fixedly installed at the top of the box body 1, a dustproof plate 13 is fixedly installed at the front of the box body 1, a winding box 21 is rotatably installed at the bottom of the base 11, a slot is opened at the back of the winding box 21, and a rotation hole is opened at the right side wall of the winding box 21, a lower winding disk 22 is rotatably installed on the bottom surface of the inner wall of the winding box 21, a slot is opened at the outer wall of the lower winding disk 22, a connecting column 23 is fixedly installed at the center end of the lower winding disk 22, and a connecting column 23 is fixedly installed at the top of the connecting column 23 There is an upper winding reel 24, a swivel ring 25 is fixedly installed on the top of the upper winding reel 24, a rotating wheel 27 is penetrated and rotatably installed on the side wall of the winding box 21, a transmission bar 26 is rotatably installed on the outer wall of the swivel ring 25 and the rotating wheel 27, a wire 28 is fixedly installed on the bottom of the box body 1, and the wire 28 penetrates and is rotatably installed on the outer wall of the connecting column 23, and a plug is provided at the end of the wire 28 away from the box body 1. By winding the wire 28 around the outer wall of the connecting column 23, the wire can be stored and hidden, thereby realizing the winding of the wire 28, keeping the neat and professional appearance of the conference room, and improving the flexibility and efficiency of the conference room equipment.

[0027] A fixed seat 29 is fixedly installed on the back of the winding box 21, and a rotating block 210 is rotatably installed on the inner wall of the fixed seat 29. A protective frame 211 is fixedly installed on the top of the rotating block 210, and a plug is arranged on the top of the protective frame 211. An arc plate 212 is fixedly installed on the side of the protective frame 211 away from the box body 1. The arc plate 212 is elastically arranged. A limiting block 213 is fixedly installed on the outer wall of the rotating block 210 close to the box body 1. A limited position frame 214 is fixedly installed on the right side wall of the fixed seat 29. An L-shaped limit rod 215 is slidably installed on the inner wall, and the end of the L-shaped limit rod 215 away from the box body 1 contacts the top surface of the limit block 213, and the end of the L-shaped limit rod 215 close to the box body 1 is fixedly installed with a limit plate 216, which is connected to the slot of the lower winding disk 22. The elastic setting of the arc plate 212 provides a buffer for the protective frame 211. The setting of the protective frame 211 can also prevent staff from stepping on the wire 28 or causing unnecessary tripping risks when not in use, thereby extending the service life of the wire.

[0028] During use, when the conference speaker is not needed, the person unplugs the plug and rotates the wheel 27, the wheel 27 drives the transmission bar 26 to rotate, the transmission bar 26 drives the swivel 25 to rotate, the swivel 25 drives the connecting column 23 to rotate, the connecting column 23 drives the upper winding reel 24 and the lower winding reel 22 to rotate, and the connecting column 23 simultaneously reels the wire 28 and winds the wire 28 around the outer wall of the connecting column 23, so that the wire can be stored and hidden, thereby realizing the winding of the wire 28, maintaining the neat and professional appearance of the conference room, and improving the flexibility and efficiency of the conference room equipment.

[0029] When the conference speaker needs to be used, the L-shaped limit rod 215 is pulled, and the L-shaped limit rod 215 is pulled out of the slot of the lower winding disk 22. The L-shaped limit rod 215 also releases the restriction of the limit block 213. The limit block 213 drives the rotating block 210 to rotate on the inner wall of the fixed seat 29, and the rotating block 210 drives the protective frame 211 to rotate. The protective frame 211 drives the arc plate 212 to rotate. Through free fall, the arc plate 212 will first contact the ground. The elastic setting of the arc plate 212 provides a buffer for the protective frame 211. Through the setting of the protective frame 211, it can also prevent the staff from stepping on the wire 28 or causing unnecessary tripping risks when not in use, thereby extending the service life of the wire.

[0030] See also Figure 1-Figure 8 On the basis of the above embodiment, in another embodiment of the present invention, a dust removal device 3 for preventing dust accumulation is provided on the front of the box body 1, and a sound amplifying device 4 for sound amplification is provided on both sides of the front of the box body 1. The dust removal device 3 includes a screw column 31, a threaded block 32, a shell 33, a sliding shell 34, a spring 35, a connecting rod 36 and a brush 37. The screw column 31 is rotatably mounted on the bottom of the top plate 12. The screw column 31 is driven by a motor, and the motor is fixedly mounted on the top of the top plate 12. A threaded groove is provided on the outer wall of the screw column 31, and the threaded block 32 is threadedly connected to the outer wall of the screw column 31. The shell 33 is fixedly mounted on the outer wall of the threaded block 32. The sliding shell 34 is slidably installed on the inner wall of the shell 33, the spring piece 35 is fixedly installed on the inner wall of the shell 33 away from the box body 1, the spring piece 35 contacts the outer wall of the sliding shell 34, and the spring piece 35 is elastically set, the connecting rod 36 is fixedly installed on the inner wall of the sliding shell 34, a spring is arranged between the connecting rod 36 and the brush 37, and the brush 37 contacts the outer wall of the dustproof plate 13, the brush 37 is slidably installed on the outer wall of the connecting rod 36, and the brush 37 is also pushed out, and the brush 37 moves up and down to brush away the dust on the surface of the dustproof plate 13, effectively removing the dust and dirt accumulated on the dustproof plate 13, thereby keeping the appearance of the box body 1 clean and hygienic.

[0031] The dust removal device 3 also includes a circular convex ball 38 and a contact plate 39. The circular convex ball 38 is fixedly installed on the side wall of the brush 37 away from the screw column 31, and the contact plate 39 is fixedly installed on the bottom of the top plate 12 away from the screw column 31. A plurality of uniformly equidistant triangular protrusions are arranged on the side of the contact plate 39 close to the box body 1, and the triangular protrusions on the contact plate 39 are located on the movement trajectory of the circular convex ball 38, so that the brush 37 can move up and down while also moving left and right, thereby further removing dust and dirt accumulated on the dustproof plate 13, and at the same time preventing dust from entering the interior of the speaker and affecting the sound quality and normal operation of the equipment.

[0032] The sound amplifying device 4 includes a rotating shaft rod 41 and a sound amplifying plate 42. The rotating shaft rod 41 is fixedly installed on both sides of the outer wall of the box body 1. The sound amplifying plate 42 is connected to the outer wall of the rotating shaft rod 41 by a torsion spring. Through the setting of the sound amplifying plate 42 on the rotating shaft rod 41, the sound of the conference speaker will not be too dispersed during use, thereby enhancing the sound diffusion effect of the speaker and making the sound more evenly distributed in the conference room.

[0033] The sound amplifying device 4 also includes a movable frame 43, a limit plate 44, a connecting rod 45, an inclined plate 46 and a resistance rod 47. The movable frame 43 is slidably mounted on the surface of the sound amplifying plate 42, the limit plate 44 is fixedly mounted at both ends of the movable frame 43, the connecting rod 45 is fixedly mounted on the opposite outer walls of the movable frame 43, the inclined plate 46 is fixedly mounted on the outer wall of the connecting rod 45 close to the box body 1, the resistance rod 47 is fixedly mounted on the outer wall of the outer shell 33, and the inclined surface of the inclined plate 46 is located on the movement trajectory of the resistance rod 47. By setting the sound amplifying plate 42 to gather in the middle, the sound amplifying plate 42 can further concentrate and direct sound propagation, ensuring that the sound is more accurately projected to the audience area in the conference room, and further reducing the frequent reflection of sound on the dust removal device 3, thereby enhancing the sound transmission.

[0034] During use, when the conference speaker is used for a long time, dust will accumulate on the dustproof plate 13 and it needs to be cleaned. Start the motor, the motor drives the screw column 31 to rotate, the screw column 31 drives the threaded block 32 to move up and down, the threaded block 32 drives the shell 33 to move up and down, the shell 33 drives the sliding shell 34 to move up and down, the sliding shell 34 drives the spring piece 35 and the connecting rod 36 to move up and down, the connecting rod 36 drives the brush 37 to move up and down, after the brush 37 leaves the restriction of the top plate 12, the elastic force of the spring piece 35 pushes the sliding shell 34 toward the direction of the box body 1, the sliding shell 34 drives the connecting rod 36 to be pushed outward, and the brush 37 is also pushed out accordingly, the brush 37 moves up and down to brush off the dust on the surface of the dustproof plate 13, effectively removing the dust and dirt accumulated on the dustproof plate 13, thereby keeping the appearance of the box body 1 clean and hygienic.

[0035] When the brush 37 moves up and down, the brush 37 drives the round convex ball 38 to move up and down, and the round convex ball 38 contacts the triangular protrusion of the contact plate 39, so that the round convex ball 38 drives the brush 37 to slide in the direction of the connecting rod 36, and then resets through the spring on the connecting rod 36, so that the brush 37 can move up and down while also moving left and right, thereby further removing dust and dirt accumulated on the dustproof plate 13, and at the same time preventing dust from entering the interior of the speaker and affecting the sound quality and the normal operation of the equipment.

[0036] When the conference speaker is turned on, the sound amplification panel 42 is opened from both sides of the box body 1. Through the setting of the sound amplification panel 42 on the shaft rod 41, the sound will not be too dispersed during the use of the conference speaker, thereby enhancing the sound diffusion effect of the speaker and making the sound more evenly distributed in the conference room.

[0037] When the dust removal device 3 is in operation, the use of the speaker cannot be stopped. At this time, the brush 37 will reduce the propagation of sound, and the shell 33 drives the resistance rod 47 to move downward. The resistance rod 47 resists the inclined surface of the inclined plate 46, so that the inclined plate 46 drives the connecting rod 45 to move outward, and the connecting rod 45 drives the movable frame 43 to move outward. The movable frame 43 is restricted by the limit plate 44, so that the movable frame 43 drives the sound expansion board 42 to gather to the middle. By setting the sound expansion board 42 to gather to the middle, the sound expansion board 42 can further concentrate and direct the sound propagation, ensuring that the sound is more accurately projected to the audience area in the conference room, and further reducing the frequent reflection of the sound on the dust removal device 3, thereby enhancing the sound transmission.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A new conference speaker, comprising a box (1), a base (11) is fixedly mounted on the bottom of the box (1), a top plate (12) is fixedly mounted on the top of the box (1), and a dustproof plate (13) is fixedly mounted on the front of the box (1), characterized in that: A winding box (21) is rotatably mounted on the bottom of the base (11), a lower winding disk (22) is rotatably mounted on the bottom surface of the inner wall of the winding box (21), a connecting column (23) is fixedly mounted on the central end of the lower winding disk (22), an upper winding disk (24) is fixedly mounted on the top of the connecting column (23), a rotating ring (25) is fixedly mounted on the top of the upper winding disk (24), a rotating wheel (27) is penetrated and rotatably mounted on the side wall of the winding box (21), a transmission bar (26) is rotatably mounted on the outer walls of the rotating ring (25) and the rotating wheel (27), a wire (28) is fixedly mounted on the bottom of the box body (1), and the wire (28) penetrates and is rotatably mounted on the outer wall of the connecting column (23), a dust removal device (3) for preventing dust accumulation is arranged on the front of the box body (1), and sound amplification devices (4) for sound amplification are arranged on both sides of the front of the box body (1).

2. According to claim 1, the new conference speaker is characterized by: A fixed seat (29) is fixedly installed on the back side of the winding box (21), a rotating block (210) is rotatably installed on the inner wall of the fixed seat (29), a protective frame (211) is fixedly installed on the top of the rotating block (210), an arc-shaped plate (212) is fixedly installed on the side of the protective frame (211) away from the box body (1), a limiting block (213) is fixedly installed on the outer wall of the rotating block (210) close to the box body (1), a limiting frame (214) is fixedly installed on the right side wall of the fixed seat (29), an L-shaped limiting rod (215) is slidably installed on the inner wall of the limiting frame (214), and a limiting plate (216) is fixedly installed on one end of the L-shaped limiting rod (215) close to the box body (1).

3. The novel conference speaker according to claim 2 is characterized by: A slot is provided on the back of the winding box (21), and a rotating hole is provided on the right side wall of the winding box (21); a slot is provided on the outer wall of the lower winding disk (22); a plug is provided at the end of the wire (28) away from the box body (1), and the plug is provided at the top of the protective frame (211); the arc plate (212) is elastically provided; the end of the L-shaped limiting rod (215) away from the box body (1) contacts the top surface of the limiting block (213), and the limiting plate (216) contacts the slot of the lower winding disk (22).

4. The novel conference speaker according to claim 3 is characterized by: The dust removal device (3) comprises a screw column (31), a threaded block (32), an outer shell (33), a sliding shell (34), a spring piece (35), a connecting rod (36) and a brush (37); the screw column (31) is rotatably mounted on the bottom of the top plate (12); a threaded groove is provided on the outer wall of the screw column (31); the threaded block (32) is threadedly connected to the outer wall of the screw column (31); the outer shell (33) is fixedly mounted on the outer wall of the threaded block (32); the sliding shell (34) is slidably mounted on the inner wall of the outer shell (33); the spring piece (35) is fixedly mounted on the inner wall of the outer shell (33) away from the box body (1); the connecting rod (36) is fixedly mounted on the inner wall of the sliding shell (34); and the brush (37) is slidably mounted on the outer wall of the connecting rod (36).

5. The novel conference speaker according to claim 4 is characterized by: The dust removal device (3) further comprises a circular convex ball (38) and a contact plate (39), wherein the circular convex ball (38) is fixedly mounted on the side wall of the brush (37) away from the screw column (31), and the contact plate (39) is fixedly mounted on the bottom of the top plate (12) away from the screw column (31).

6. The novel conference speaker according to claim 5 is characterized by: The screw column (31) is driven by a motor, and the motor is fixedly mounted on the top of the top plate (12); the spring sheet (35) contacts the outer wall of the sliding shell (34), and the spring sheet (35) is elastically arranged; a spring is arranged between the connecting rod (36) and the brush (37), and the brush (37) contacts the outer wall of the dustproof plate (13); a plurality of uniformly equidistant triangular protrusions are arranged on one side of the contact plate (39) close to the box body (1), and the triangular protrusions on the contact plate (39) are located on the movement trajectory of the circular convex ball (38).

7. The novel conference speaker according to claim 6 is characterized by: The sound amplification device (4) comprises a rotating shaft rod (41) and a sound amplification plate (42); the rotating shaft rod (41) is fixedly mounted on both sides of the outer wall of the box body (1); and the sound amplification plate (42) is connected to the outer wall of the rotating shaft rod (41) by a torsion spring.

8. The novel conference speaker according to claim 7 is characterized by: The sound amplifying device (4) further comprises a movable frame (43), a limit plate (44), a connecting rod (45), an inclined plate (46) and a resisting rod (47); the movable frame (43) is slidably mounted on the surface of the sound amplifying plate (42); the limit plate (44) is fixedly mounted on two ends of the movable frame (43); the connecting rod (45) is fixedly mounted on opposite outer walls of the movable frame (43); the inclined plate (46) is fixedly mounted on the outer wall of the connecting rod (45) close to the box body (1); the resisting rod (47) is fixedly mounted on the outer wall of the outer shell (33); and the inclined surface of the inclined plate (46) is located on the movement track of the resisting rod (47).

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