Auto-induction voice broadcasting device

Abstract

The invention discloses an automatic induction voice broadcasting device, and relates to the technical field of broadcasting devices.The automatic induction voice broadcasting device comprises a base, a ground contact plate is fixedly mounted at the bottom of the base, a hollow stand column is fixedly mounted at the top of the base, and a hollow shell sleeves the top of the hollow stand column; a plurality of first electric push rods are fixedly installed at the bottom of the inner wall of the hollow stand column, the top ends of the first electric push rods all extend into an inner cavity of the hollow shell and are jointly and fixedly provided with a fixing plate, the fixing plate is fixedly installed in the inner cavity of the hollow shell, and a supporting assembly is arranged at the bottom of the fixing plate; a broadcasting host is arranged at the top of the fixing plate, a plurality of external loudspeakers are arranged on the outer side of the broadcasting host, after broadcasting is finished, the external loudspeakers are reset and stored in the empty shell through resetting of a second electric push rod, the external loudspeakers are stored and protected through the empty shell, and the safety performance is improved; and meanwhile, the function of adjusting the height of the external loudspeaker is also realized.

Description

Technical Field

[0001] The present invention relates to the technical field of voice broadcasting, and specifically to an automatic induction voice broadcasting device. Background Art

[0002] Broadcasting is very common in our daily life and is a tool for news dissemination. It widely exists in densely populated areas such as schools, hospitals, and communities, and is used to remind people around of a series of precautions. With the development of social technology, broadcasting devices are becoming more and more intelligent.

[0003] When an intelligent voice broadcasting device is in daily operation, it can automatically judge the time and play the content automatically. Compared with traditional manual broadcasting equipment, it has the advantages of liberating labor force and convenient operation.

[0004] When installing the voice broadcasting device of the prior art, the whole device is usually fixedly placed in one place, and its sound is transmitted to the outside mainly through the sound amplification effect of an external loudspeaker. Although it can achieve the broadcasting effect, there are still some defects in actual use: First, its external loudspeaker is always in the external environment and there is no storage measure for it when not in use. Over time, the external loudspeaker is easily damaged by external collisions; Second, to ensure the broadcasting effect, the whole device usually needs to be suspended and installed at a high place, which undoubtedly increases the safety hazard and makes the subsequent regular maintenance work inconvenient. Summary of the Invention

[0005] The technical problem solved by the present invention is to overcome the defects of poor use effect, easy damage, and single function in the prior art, and provide an automatic induction voice broadcasting device.

[0006] To achieve the above object, the present invention provides the following technical solution: An automatic induction voice broadcasting device, including a base, a floor contact plate is fixedly installed at the bottom of the base, and a hollow column is fixedly installed at the top of the base. An empty shell is sleeved and installed at the top of the hollow column. A plurality of first electric push rods are fixedly installed at the bottom inner wall of the hollow column. The top ends of the plurality of first electric push rods all extend into the inner cavity of the empty shell and are jointly fixedly installed with a fixing plate. The fixing plate is fixedly installed in the inner cavity of the empty shell. A support assembly is arranged at the bottom of the fixing plate, and a broadcasting host is arranged at the top of the fixing plate. A plurality of external loudspeakers are arranged outside the broadcasting host.

[0007] Preferably, the support assembly includes a plurality of second racks. The tops of the plurality of second racks are fixedly connected to the bottom of the fixed plate, and a second gear is engaged with the outside of each of the plurality of second racks. A plurality of vertical grooves are formed in the outer side of the hollow column. The plurality of second gears are respectively rotatably connected to the inner cavities of the corresponding vertical grooves, and a third rack is engaged with the outside of each of the plurality of second gears. One side of the third rack is slidably connected to the inner cavity of the vertical groove, and the other side of the third rack is movably connected to a second connecting bar. The bottom of the second connecting bar is movably connected to a movable plate. The movable plate is movably connected to the top of the base, and a pulley is installed at the bottom of the movable plate.

[0008] Preferably, a side block is fixedly connected to the side of the third rack away from the second connecting bar. A movable block is fixedly connected to the side of the side block away from the third rack. The movable block is slidably connected to the inner cavity of the adjacent vertical groove.

[0009] Preferably, a plurality of side grooves are formed in the top of the base. The plurality of movable plates are respectively movably installed in the inner cavities of the corresponding side grooves.

[0010] Preferably, a limiting block is fixedly installed at the bottom of each of the plurality of movable plates. A limiting groove is formed at the bottom of the inner wall of each of the plurality of side grooves. The limiting block is slidably connected to the inner cavity of the corresponding limiting groove.

[0011] Preferably, a plurality of arc grooves are formed in the outer wall of the empty shell near the top. An arc plate is movably installed in each of the plurality of arc groove inner cavities. A torsion assembly is arranged at the bottom of the arc plate, and an external loudspeaker is installed in the inner cavity of the arc plate. A wire is installed between the external loudspeaker and the broadcast host. The wire penetrates through the corresponding arc groove.

[0012] Preferably, the torsion assembly includes a round shaft. The round shaft is fixedly installed through the arc plate. The two ends of the round shaft are respectively rotatably connected to the top and the bottom of the inner wall of the arc groove, and the bottom end of the round shaft extends to the bottom of the empty shell and is fixedly connected to a first gear. A first rack is engaged with the outside of the first gear. A connecting plate is fixedly connected to the outside of the first rack. A plurality of through grooves are formed in the outer wall of the empty shell near the top. The side of the connecting plate away from the first rack penetrates through the corresponding through groove and extends into the inner cavity of the empty shell, and a first connecting bar is movably installed on the side of the connecting plate away from the first rack. A second electric push rod is movably installed at the top of the first connecting bar. The top of the second electric push rod is fixedly connected to the bottom of the fixed plate.

[0013] Preferably, the first rack is arranged in an "L" shape, and the first gear is engaged in the inner cavity of the first rack.

[0014] Preferably, a plurality of card slots are formed in the bottom of the empty shell. The plurality of card slots are all in a vertical state and are arranged in a uniformly distributed manner.

[0015] Preferably, the broadcast host includes a single-chip microcomputer module, a signal receiving module, a signal transmitting module, a timing module, an information storage module, a voice recognition sensing module, a power supply module, and a network signal module.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. When the present invention is in use, through the cooperation of components such as an external loudspeaker, a second electric push rod, and a round shaft, when it is necessary to use the external loudspeaker to perform voice broadcast work, multiple groups of second electric push rods can be synchronously driven, so that multiple groups of second electric push rods respectively push the corresponding first connecting bars to move. The first connecting bar pushes the corresponding connecting plate to slide inside the through groove, the connecting plate pushes the first rack to move, the first rack drives the first gear to rotate, the first gear drives the round shaft to rotate, and the circumference drives the corresponding arc plate to deflect, so that the arc plate drives the external loudspeaker thereon to move out of the empty shell. After the broadcast is over, the external loudspeaker is reset and stored inside the empty shell by using the reset of the second electric push rod, and the empty shell is used to store and protect it, improving the safety performance.

[0018] 2. When the present invention is in use, through the cooperation of components such as a first electric push rod and a fixing plate, when performing broadcast work, multiple groups of first electric push rods synchronously push the fixing plate upward, the fixing plate drives the empty shell to move upward synchronously, and the empty shell drives components such as the broadcast host and the external loudspeaker to move upward synchronously, so as to achieve the purpose of increasing the height of the external loudspeaker, further improving the sound amplification effect, and the overall device does not need to be installed at a high place, avoiding potential safety hazards and facilitating subsequent maintenance by workers.

[0019] 3. When the present invention is in use, through the cooperation of components such as a second gear, a second rack, and a third rack, during the upward movement of components such as the empty shell, the fixing plate will also drive multiple second racks at the bottom to move upward together. Multiple second racks respectively drive the corresponding second gears to rotate, the second gears drive the outer third racks to move downward, multiple third racks respectively push the corresponding second connecting bars to move, the second connecting bars push the movable plate to move, and the movable plate drives the bottom pulley to move. After the empty shell moves upward to the limit height, multiple pulleys all move to the outside of the base, and the contact area of the device is enlarged, effectively improving the stability performance of the overall device. After the broadcast is over, when multiple groups of first electric push rods drive components such as the empty shell to reset, multiple groups of pulleys automatically reset, and the volume of the device after reset is smaller than that during the broadcast work process, reducing the risk of being collided and improving the safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the external structure of the present invention from a certain angle;

[0021] Figure 2 External structural schematic diagram from another angle of the present invention;

[0022] Figure 3 For the present invention Figure 1 Internal partial structural schematic diagram;

[0023] Figure 4 For the present invention Figure 2 Partial structural schematic diagram;

[0024] Figure 5 For the present invention Figure 3 Partial structural schematic diagram;

[0025] Figure 6 For the present invention Figure 4 Partial structural schematic diagram;

[0026] Figure 7 For the present invention Figure 4 Cross-sectional structural schematic diagram;

[0027] Figure 8 Structural schematic diagram at components such as the external loudspeaker of the present invention;

[0028] Figure 9 Structural schematic diagram at components such as the second gear of the present invention;

[0029] Figure 10 Module composition diagram of the broadcast host of the present invention.

[0030] Reference numerals in the figure: 1, base; 2, contact floor; 3, side groove; 4, movable plate; 5, pulley; 6, limit groove; 7, limit block; 8, hollow column; 9, first electric push rod; 10, fixing plate; 11, broadcast host; 12, hollow shell; 13, arc groove; 14, wire; 15, arc plate; 16, external loudspeaker; 17, round shaft; 18, first gear; 19, first rack; 20, connecting plate; 21, through groove; 22, first connecting strip; 23, second electric push rod; 24, second rack; 25, second gear; 26, third rack; 27, side block; 28, movable block; 29, vertical groove; 30, second connecting strip; 31, card slot. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0032] Please refer to Figures 1-10, the present invention provides a technical solution: an automatic induction voice broadcast device, including a base 1. A floor contact plate 2 is fixedly installed at the bottom of the base 1. The floor contact plate 2 is used to ensure the friction between the base 1 and the ground, and at the same time support the base 1 to make the base 1 in a suspended state. A hollow column 8 is fixedly installed at the top of the base 1. An empty shell 12 is sleeved and installed at the top of the hollow column 8. A plurality of first electric push rods 9 are fixedly installed at the bottom of the inner wall of the hollow column 8. The tops of the plurality of first electric push rods 9 all extend into the inner cavity of the empty shell 12 and are jointly fixedly installed with a fixing plate 10. The fixing plate 10 is fixedly installed in the inner cavity of the empty shell 12. By setting a plurality of first electric push rods 9, the up and down height of the empty shell 12 is controlled. When broadcasting, it is raised to improve the broadcasting effect. After the broadcasting is over, it is lowered to reduce the volume of the overall device, further reduce the risk of the device being collided, improve the safety performance, reduce potential safety hazards, and at the same time, it is convenient for regular maintenance after the height is reduced. A support component is arranged at the bottom of the fixing plate 10. With the assistance of the support component, the stability of the overall device is improved. A broadcasting host 11 is arranged at the top of the fixing plate 10. A plurality of external loudspeakers 16 are arranged outside the broadcasting host 11. With the cooperation of the external loudspeakers 16, the transmission range of the sound is expanded during the implementation of the broadcast, achieving a better broadcast effect.

[0033] Please refer to Figure 5 , Figure 6 and Figure 9 , the support component includes a plurality of second racks 24. The tops of the plurality of second racks 24 are fixedly connected to the bottom of the fixing plate 10. A plurality of second gears 25 are engaged outside the plurality of second racks 24. A plurality of vertical grooves 29 are opened on the outside of the hollow column 8. The plurality of second gears 25 are respectively rotatably connected to the inner cavities of the corresponding vertical grooves 29. A plurality of third racks 26 are engaged outside the plurality of second gears 25. One side of the third rack 26 is slidably connected to the inner cavity of the vertical groove 29, and the other side of the third rack 26 is movably connected to a second connecting bar 30. The bottom of the second connecting bar 30 is movably connected to a movable plate 4. The movable plate 4 is movably connected to the top of the base 1. A pulley 5 is installed at the bottom of the movable plate 4. Among them, the plurality of second racks 24 will move synchronously with the up and down movement of the empty shell 12. Along with this, the plurality of second racks 24 will drive the third racks 26 to move in the opposite direction through the second gears 25. The third racks 26 drive the movable plate 4 on the second connecting bar 30 to move horizontally. The movable plate 4 drives the bottom pulley 5 to displace. By increasing the positions of the plurality of pulleys 5, the contact area between the bottom of the device and the ground is increased, playing a role in improving the support stability performance and preventing the device from being unstable during operation.

[0034] Please refer to Figure 5 , Figure 6 and Figure 9, on the side of the third rack 26 away from the second connecting bar 30, a side block 27 is fixedly connected. On the side of the side block 27 away from the third rack 26, a movable block 28 is fixedly connected. The movable block 28 is slidably connected to the inner cavity of the adjacent vertical groove 29. By the way that the movable block 28 slides inside the vertical groove 29, the up and down movement trajectory of the third rack 26 is limited, thus avoiding the derailment of the third rack 26 from the second gear 25 during the up and down movement, and ensuring the stable operation of all parts of the overall device.

[0035] Please refer to Figure 2 and Figure 9 , a plurality of side grooves 3 are opened at the top of the base 1. A plurality of movable plates 4 are respectively movably installed in the inner cavities of the corresponding side grooves 3. And a limiting block 7 is fixedly installed at the bottom of each of the plurality of movable plates 4. Limiting grooves 6 are opened at the bottoms of the inner walls of the plurality of side grooves 3. The limiting block 7 is slidably connected to the inner cavity of the corresponding limiting groove 6. Through the cooperation of the limiting groove 6 and the limiting block 7, on the one hand, the horizontal movement trajectory of the movable plate 4 is limited, and on the other hand, it can prevent the movable plate 4 from detaching from the inside of the side groove 3, resulting in the overall support assembly being unable to continue maintaining the support effect.

[0036] Please refer to Figure, Figure 2 and Figure 8 , a plurality of arc grooves 13 are opened at the outer wall of the empty shell 12 near the top. A plurality of arc plates 15 are movably installed in the inner cavities of the plurality of arc grooves 13. A torsion assembly is arranged at the bottom of the arc plate 15. And an external loudspeaker 16 is installed in the inner cavity of the arc plate 15. A wire 14 is installed between the external loudspeaker 16 and the broadcast host 11. The wire 14 penetrates through the corresponding arc groove 13. The connection between the external loudspeaker 16 and the broadcast host 11 is completed by using the wire 14. And the setting of the arc groove 13 can accommodate the external loudspeaker 16 into the empty shell 12 under the drive of the torsion assembly, and the empty shell 12 is used to protect the external loudspeaker 16.

[0037] Please refer to Figure 1 , Figure 3 and Figure 8, the torsion assembly includes a circular shaft 17 which is fixedly installed through the arc-shaped plate 15. Both ends of the circular shaft 17 are respectively rotatably connected to the top and bottom of the inner wall of the arc-shaped groove 13. And the bottom end of the circular shaft 17 extends to the bottom of the empty shell 12 and is fixedly connected with a first gear 18. A first rack 19 is meshed outside the first gear 18. The first rack 19 is arranged in an "L" shape. The first gear 18 is meshed inside the inner cavity of the first rack 19. A connecting plate 20 is fixedly connected to the outside of the first rack 19. A plurality of through grooves 21 are opened at a position close to the top of the outer wall of the empty shell 12. One side of the connecting plate 20 away from the first rack 19 penetrates through the corresponding through groove 21 and extends into the inner cavity of the empty shell 12. And a first connecting bar 22 is movably installed on one side of the connecting plate 20 away from the first rack 19. A second electric push rod 23 is movably installed at the top of the first connecting bar 22. The top of the second electric push rod 23 is fixedly connected to the bottom of the fixing plate 10. By providing power through the second electric push rod 23, the first connecting bar 22 is made to push the connecting plate 20 to move. The connecting plate 20 pushes the first rack 19 to move horizontally. The first rack 19 drives the first gear 18 to rotate self, and then drives the arc-shaped plate 15 on the circular shaft 17 to deflect, and uses the deflection of the arc-shaped plate 15 to control the storage and expenditure of the external loudspeaker 16 installed thereon.

[0038] Please refer to Figure 1 and Figure 2 , a plurality of card slots 31 are opened on the bottom of the empty shell 12. All the plurality of card slots 31 are in a vertical state and are arranged in a uniformly distributed manner. Through the arrangement of the card slots 31, it can be avoided that during the downward reset process of the empty shell 12, it collides with the second connecting bar 30, resulting in the empty shell 12 being unable to be normally reset downward. At the same time, it ensures that components such as the pulley 5 can be normally reset.

[0039] Please refer to Figure 10 , the broadcast host 11 includes a single-chip microcomputer module, a signal receiving module, a signal transmission module, a timing module, an information storage module, a voice recognition sensing module, a power supply module and a network signal module. The network signal module is used to realize the connection between the broadcast host 11 and an external APP, including but not limited to devices such as mobile phones and tablet computers. Multiple broadcast contents are input into the broadcast host 11 through the APP, and are recognized in cooperation with the voice recognition sensing module for the voice content, and the recognized broadcast contents can be sorted to facilitate subsequent adjustment. The broadcast contents are recorded and stored by the information storage module. Then, the broadcast duration and the interval duration can be set in the timing module. After the countdown ends, the timing module will transmit the signal to the single-chip microcomputer module, and the single-chip microcomputer module controls the opening and closing of a series of components. The power supply module is connected to an external power supply to achieve the power supply effect. The signal receiving module and the signal transmission module are used to receive command signals and transmit command signals, and cooperate with the single-chip microcomputer module to better implement the broadcast work.

[0040] Working principle: When the device of this application is in use, first install the overall device in a relatively open area, and ensure that multiple sets of pulleys 5 and the touch floor 2 are in contact with the ground (that is, ensure that the ground is flat). Then, the mobile phone APP can be used to establish a network connection with the broadcast host 11, and the broadcast content, broadcast duration, and repetition time are transmitted to the broadcast host 11 through the mobile phone APP. Then, turn on the power of the overall device. When it reaches the broadcast working time, the broadcast host 11 sends out a working instruction. At this time, multiple sets of first electric push rods 9 and multiple sets of second electric push rods 23 are synchronously driven. The multiple sets of first electric push rods 9 push the fixing plate 10 upward synchronously. The fixing plate 10 drives the empty shell 12 to move upward synchronously. The empty shell 12 drives components such as the broadcast host 11 and the external loudspeaker 16 to move upward synchronously, achieving the purpose of increasing the height of the external loudspeaker 16 and further improving the sound amplification effect. During this period, the fixing plate 10 also drives multiple second racks 24 at the bottom to move upward together. The multiple second racks 24 respectively drive the corresponding second gears 25 to rotate. The second gears 25 drive the outer third racks 26 to move downward. The multiple third racks 26 respectively push the corresponding second connecting bars 30 to move. The second connecting bars 30 push the movable plate 4 to move. The movable plate 4 drives the bottom pulleys 5 to move. After the empty shell 12 moves upward to the limit height, multiple pulleys 5 all move to the outside of the base 1, and the ground contact area of the device is enlarged, effectively improving the stability performance of the overall device. During this period, multiple sets of second electric push rods 23 respectively push the corresponding first connecting bars 22 to move. The first connecting bars 22 push the corresponding connecting plates 20 to slide inside the through slots 21. The connecting plates 20 push the first rack 19 to move. The first rack 19 drives the first gear 18 to rotate self. The first gear 18 drives the circular shaft 17 to rotate. The circular shaft 17 drives the corresponding arc plate 15 to deflect, so that the arc plate 15 drives the external loudspeaker 16 thereon to move out of the empty shell 12. After the broadcast ends, the broadcast host 11 issues a reset instruction, so that multiple sets of first electric push rods 9 and multiple sets of second electric push rods 23 are reset synchronously. The reset of multiple sets of second electric push rods 23 is used to reset and store the external loudspeaker 16 into the empty shell 12, and the empty shell 12 is used to store and protect it, improving the safety performance. At the same time, the first electric push rod 9 drives the empty shell 12 to reset downward. In this process, multiple sets of pulleys 5 are reset synchronously, reducing the volume of the overall device and further reducing the risk of the device being collided.

[0041] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic induction voice broadcasting device, comprising a base (1), characterized in that: A contact plate (2) is fixedly installed at the bottom of the base (1), and a hollow column (8) is fixedly installed at the top of the base (1). A hollow shell (12) is sleeved on the top of the hollow column (8), and a plurality of No. 1 electric push rods (9) are fixedly installed on the bottom of the inner wall of the hollow column (8). The top ends of the plurality of No. 1 electric push rods (9) extend into the inner cavity of the hollow shell (12) and are fixedly installed with a fixing plate (10) together. The fixing plate (10) is fixedly installed in the inner cavity of the hollow shell (12). A supporting assembly is arranged at the bottom of the fixing plate (10), and a broadcast host (11) is arranged at the top of the fixing plate (10). A plurality of external loudspeakers (16) are arranged on the outside of the broadcast host (11).

2. The automatic induction voice broadcasting device according to claim 1, characterized in that: The support assembly comprises a plurality of No. 2 racks (24), the tops of the plurality of No. 2 racks (24) are fixedly connected to the bottom of the fixed plate (10), and the outer sides of the plurality of No. 2 racks (24) are meshed with No. 2 gears (25), the outer sides of the hollow column (8) are provided with a plurality of vertical slots (29), the plurality of No. 2 gears (25) are respectively rotatably connected to the inner cavities of the corresponding vertical slots (29), and the outer sides of the plurality of No. 2 gears (25) are meshed with No. 3 racks (26), one side of the No. 3 rack (26) is slidably connected to the inner cavity of the vertical slot (29), and the other side of the No. 3 rack (26) is movably connected to a No. 2 connecting bar (30), the bottom of the No. 2 connecting bar (30) is movably connected to a movable plate (4), the movable plate (4) is movably connected to the top of the base (1), and a pulley (5) is installed at the bottom of the movable plate (4).

3. The automatic induction voice broadcasting device according to claim 2, characterized in that: A side block (27) is fixedly connected to the side of the third rack (26) away from the second connecting bar (30), and a movable block (28) is fixedly connected to the side of the side block (27) away from the third rack (26). The movable block (28) is slidably connected to the inner cavity of the adjacent vertical slot (29).

4. The automatic induction voice broadcasting device according to claim 2, characterized in that: The top of the base (1) is provided with a plurality of side grooves (3), and a plurality of movable plates (4) are movably mounted in the inner cavities of the corresponding side grooves (3).

5. The automatic induction voice broadcasting device according to claim 4, characterized in that: A limiting block (7) is fixedly installed at the bottom of a plurality of the movable plates (4), a limiting groove (6) is provided on the bottom of the inner wall of a plurality of the side grooves (3), and the limiting block (7) is slidably connected to the inner cavity of the corresponding limiting groove (6).

6. The automatic induction voice broadcasting device according to claim 1, characterized in that: The outer wall of the hollow shell (12) is provided with a plurality of arc-shaped grooves (13) near the top, and the inner cavities of the plurality of arc-shaped grooves (13) are all movably provided with arc-shaped plates (15), the bottom of the arc-shaped plate (15) is provided with a torsion assembly, and the inner cavity of the arc-shaped plate (15) is provided with an external loudspeaker (16), and a wire (14) is installed between the external loudspeaker (16) and the broadcast host (11), and the wire (14) passes through the corresponding arc-shaped groove (13).

7. The automatic induction voice broadcasting device according to claim 6, characterized in that: The torsion assembly comprises a circular shaft (17), the circular shaft (17) passes through and is fixedly mounted on the arc plate (15), the two ends of the circular shaft (17) are respectively rotatably connected to the top and bottom of the inner wall of the arc groove (13), and the bottom end of the circular shaft (17) extends to the bottom of the hollow shell (12) and is fixedly connected to a first gear (18), the outer side of the first gear (18) is meshed with a first rack (19), the outer side of the first rack (19) is fixedly connected to a connecting plate (20), and the hollow shell (12) is provided with a plurality of connecting plates (20). 2) A plurality of through slots (21) are provided near the top of the outer wall, and a side of the connecting plate (20) away from the No. 1 rack (19) passes through the corresponding through slots (21) and extends to the inner cavity of the hollow shell (12), and a No. 1 connecting bar (22) is movably installed on the side of the connecting plate (20) away from the No. 1 rack (19), and a No. 2 electric push rod (23) is movably installed on the top of the No. 1 connecting bar (22), and the top of the No. 2 electric push rod (23) is fixedly connected to the bottom of the fixed plate (10).

8. The automatic induction voice broadcasting device according to claim 7, characterized in that: The first rack (19) is arranged in an "L" shape, and the first gear (18) is meshed in the inner cavity of the first rack (19).

9. The automatic induction voice broadcasting device according to claim 1, characterized in that: A plurality of slots (31) are provided on the bottom of the empty shell (12); the plurality of slots (31) are all in a vertical state, and the plurality of slots (31) are evenly distributed.

10. The automatic induction voice broadcasting device according to claim 1, characterized in that: The broadcast host (11) comprises a single chip computer module, a signal receiving module, a signal transmission module, a timing module, an information storage module, a voice recognition sensor module, a power supply module and a network signal module.

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