Sound source acquisition device for film and television shooting

Abstract

The invention relates to the technical field of film and television production, in particular to a sound source collecting device for film and television production, which comprises a base, a lifting column is arranged on the top surface of the base, a mounting plate is fixedly arranged at the top of the lifting column, the sound source collecting device further comprises a sound source collecting rod and a first connecting rod, and the bottom of the sound source collecting rod is slidably connected with a sound source collecting assembly along the axial direction of the sound source collecting rod; one end of the first connecting rod is fixedly connected with the mounting plate, and the other end of the first connecting rod is hinged to the sound source collecting rod; the sound source collecting device is provided with the sound source collecting rod and the sound source collecting assembly, the sound source collecting assembly is in sliding fit with the sound source collecting rod, when a worker pulls the second connecting rod to move in the vertical direction, the sound source collecting assembly can be controlled to move in the inclined direction, and in other words, the worker only needs one pull-down action, and the sound source collecting assembly can be controlled to move in the inclined direction. Therefore, the sound source acquisition assembly can be controlled to generate displacement in the horizontal direction and the vertical direction at the same time, so that two sound sources with a certain height difference can be acquired conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of film and television shooting, and specifically to a sound source acquisition device for film and television shooting. Background Art

[0002] Film and television shooting is a comprehensive creative process that encompasses a series of links from conception, planning, shooting to post-production. This process is not simply about recording images, but rather through artistic means, integrating elements such as stories, emotions, and visual effects to create attractive and infectious film and television works.

[0003] Nowadays, in the shooting link of film and television shooting, not only is it necessary to use a camera to shoot footage, but also a sound source acquisition device is required to collect sound. Traditional sound source acquisition devices include a microphone and a long rod for connecting and installing the microphone. Among them, the microphone is fixed to one end of the long rod through a connecting piece, and the staff holds the other end of the long rod and sends the microphone into the sound source generation location. The role of the long rod is to prevent the staff from getting into the frame, and the microphone is usually suspended above the sound source generation location. During the shooting process, as the position of the sound source moves, the staff also needs to hold the long rod and move synchronously with the sound source to ensure that the microphone can always be close to the sound source generation location.

[0004] However, when there are two sound sources in the same shooting scene and there is a significant height difference between the two sound sources, then during the actual shooting process, it is necessary for the staff to continuously move the position of the microphone, causing the microphone to repeatedly move between the two sound sources. Due to the certain height difference between the two sound sources, the staff not only needs to move back and forth in the horizontal direction, but also needs to repeatedly lift and lower the long rod. Over time, it will have a certain impact on the physical strength of the staff. For this reason, we have proposed a sound source acquisition device for film and television shooting to well solve the above drawbacks. Summary of the Invention

[0005] The purpose of the present invention is to provide a sound source acquisition device for film and television shooting to solve the problems raised in the above background art.

[0006] The present invention is achieved through the following technical solutions: A sound source acquisition device for film and television shooting, including a base, on the top surface of the base is provided a lifting column, and at the top of the lifting column is fixedly provided a mounting plate. It further includes:

[0007] A sound source acquisition rod, at the bottom of the sound source acquisition rod is axially slidably connected a sound source acquisition assembly;

[0008] A first connecting rod, one end of the first connecting rod is fixedly connected to the mounting plate, and the other end of the first connecting rod is hingedly arranged with the sound source acquisition rod;

[0009] A second connecting rod, one end of the second connecting rod is slidably engaged with the mounting plate, and a sliding sleeve is hinged to the other end of the second connecting rod, and the sliding sleeve is slidably sleeved outside the sound source collecting rod;

[0010] When the second connecting rod slides along the height direction of the mounting plate, the sliding sleeve can drive the sound source collecting assembly to slide along the axial direction of the sound source collecting rod.

[0011] Optionally, a sliding groove distributed along the height direction of the mounting plate is formed on the surface of the mounting plate, a displacement block is slidably arranged in the sliding groove, and one end of the second connecting rod is fixedly connected to the displacement block.

[0012] Optionally, a shaft sleeve is further arranged on the surface of the displacement block, a shaft rod is movably inserted into the shaft sleeve, a ring flange is arranged outside the shaft rod, a return spring is arranged between the ring flange and the end face of the shaft sleeve, and a plurality of shaft grooves are evenly spaced along the height direction on the inner surface of the sliding groove; in the natural state, the inner end of the shaft rod is inserted into the shaft groove.

[0013] Optionally, the lifting column is formed by sleeving an outer tube body and an inner tube body, and the first connecting rod and the second connecting rod are also formed by sleeving two tubular structures, and the first connecting rod and the second connecting rod are parallel to each other.

[0014] Optionally, the sound source collecting assembly includes a sliding member, a hinge seat, a seat plate, a rotating column, a hinge portion and a microphone, the sliding member is slidably connected to the sound source collecting rod, the bottom surface of the sliding member is hinged to the seat plate through the hinge seat, the rotating column is rotatably connected to the bottom surface of the seat plate, the hinge portion is fixedly arranged at the bottom end of the rotating column, and the microphone is hinged to the hinge portion;

[0015] A sliding port is formed on the bottom wall of the sound source collecting rod along its own length direction, and the sliding member is slidably engaged with the sliding port.

[0016] Optionally, a pulley dragging assembly is arranged inside the sound source collecting rod, the pulley dragging assembly includes a first movable pulley, a second movable pulley and a fixed pulley, the first movable pulley and the second movable pulley are connected, the fixed pulley is fixedly connected to one end inside the sound source collecting rod, a rope body is arranged on the outer frame of the fixed pulley, and the free end of the rope body sequentially bypasses the second movable pulley, the fixed pulley, the first movable pulley and is fixedly connected to the sliding member;

[0017] An elastic rope is arranged at one end of the sliding member facing away from the rope body, and the end of the elastic rope away from the sliding member is fixedly connected to the inner end of the sound source collecting rod, and in the natural state, the elastic rope is in a stretched state;

[0018] On the outer opposite side walls of the sound source collecting rod, pushing sliding openings distributed along its own length direction are provided, and pushing shafts are arranged on both sides of the outer frame of the first movable pulley. The two pushing shafts respectively pass through the two pushing sliding openings and are fixedly connected with the sliding sleeve.

[0019] Optionally, the pulley dragging assembly further includes an adjusting cylinder, the adjusting cylinder is connected to the outer frame of the second movable pulley, a main shaft is fixedly arranged inside the adjusting cylinder, a winding wheel is rotatably sleeved on the outer part of the main shaft, a steel wire rope is wound on the winding wheel, and one end of the steel wire rope passes through the adjusting cylinder and is connected to the outer frame of the first movable pulley; a clockwork spring is further sleeved on the outer part of the main shaft, and the inner end and the outer end of the clockwork spring are respectively fixedly connected with the main shaft and the winding wheel. In the natural state, the steel wire rope is in a tightened and straightened state.

[0020] Optionally, the pulley dragging assembly further includes a telescopic column, one end of the telescopic column is fixedly connected with the inner wall of the adjusting cylinder, a locking block is arranged at the other end of the telescopic column, teeth are arranged at the front end of the locking block, and a toothed ring is fixedly arranged on the outer surface of the winding wheel. When the teeth are engaged with the toothed ring, the winding wheel cannot rotate.

[0021] Optionally, the telescopic column is formed by two tubular structures sleeved with each other, and one of the tubular structures is fixedly connected with the inner wall of the adjusting cylinder, and a permanent magnet is fixedly sleeved on the outer part of the other tubular structure. An electromagnet is fixedly arranged on the outer part of the telescopic column and on the inner wall of the adjusting cylinder; when the electromagnet is powered off, the permanent magnet and the electromagnet attract each other, and the teeth are not in contact with the toothed ring; when the electromagnet is powered on, the permanent magnet and the electromagnet repel each other and move away, and the teeth are engaged with the toothed ring.

[0022] Optionally, friction columns are movably penetrated through the opposite side walls of the adjusting cylinder, a diagonal strut is hinged to the inner end of the friction column, and the end of the diagonal strut far away from the friction column is hinged to the movable end of the telescopic column; when the electromagnet is powered off, the outer end of the friction column abuts against the inner surface of the sound source collecting rod, and the friction force between the friction column and the inner surface of the sound source collecting rod is greater than the torsion force of the clockwork spring.

[0023] Compared with the prior art, the present invention provides a sound source collecting device for film and television shooting, and has the following beneficial effects:

[0024] 1. The present invention has a sound source collecting rod and a sound source collecting component, and the sound source collecting component is slidably engaged with the sound source collecting rod. When the staff pulls the second connecting rod to move vertically, the movement of the sound source collecting component in the inclined direction can be controlled. That is, with just one downward pulling action by the staff, the displacement of the sound source collecting component in both the horizontal and vertical directions can be controlled, facilitating the collection of sound sources at two locations with a certain height difference.

[0025] 2. When the second connecting rod and the first connecting rod of the present invention approach each other, the sound source collecting rod can also remain in a horizontal state, and at this time, the first connecting rod, the second connecting rod, and the sound source collecting rod as a whole are in a storage state, which serves to reduce the storage volume and prevent the sound source collecting device from being in the picture.

[0026] 3. The present invention also has a pulley dragging component, and the pulley dragging component can adjust the displacement ratio between the sliding sleeve and the sound source collecting component, thereby adapting to different types of sound source collection occasions and helping to improve the universality of the device.

[0027] 4. The height of the lifting column of the present invention can be freely adjusted, and the bottom of the base is provided with universal wheels that facilitate movement. Therefore, during the use of the present invention, there is no need for the staff to hold the rod body, which greatly reduces the labor intensity of the staff. Description of the Drawings

[0028] Figure 1 is a schematic structural diagram of the present invention;

[0029] Figure 2 is a schematic structural diagram of another state of the present invention;

[0030] Figure 3 is a schematic structural diagram of the mounting plate of the present invention;

[0031] Figure 4 is a schematic structural diagram of the sound source collecting rod of the present invention;

[0032] Figure 5 is a cross-sectional view of the structure of the sound source collecting rod of the present invention;

[0033] Figure 6 is a schematic structural diagram of the pulley dragging component of the present invention;

[0034] Figure 7 is a front view of the structure of the pulley dragging component of the present invention;

[0035] Figure 8 is a schematic diagram of the sound source collecting component of the present invention;

[0036] Figure 9 is a schematic diagram of the internal structure of the adjusting cylinder of the present invention;

[0037] Figure 10 is a cross-sectional view of the structure of the adjusting cylinder of the present invention.

[0038] In the figure: 100, base; 101, lifting column; 1011, outer tube body; 1012, inner tube body; 200, mounting plate; 201, chute; 202, displacement block; 203, bushing; 204, shaft rod; 205, annular flange; 206, return spring; 207, shaft groove; 300, sound source collection rod; 301, sliding opening; 302, elastic cord; 303, push sliding opening; 400, first connecting rod; 500, second connecting rod; 501, sliding sleeve; 600, sound source collection assembly; 601, sliding member; 602, hinge seat; 603, seat plate; 604, rotating column; 605, hinge portion; 606, microphone; 700, pulley dragging assembly; 701, first movable pulley; 702, second movable pulley; 703, fixed pulley; 704, cord body; 705, push shaft; 706, adjusting cylinder; 707, main shaft; 708, winding wheel; 709, steel wire rope; 710, clockwork spring; 711, telescopic column; 712, locking block; 713, tooth; 714, gear ring; 715, permanent magnet; 716, electromagnet; 717, friction column; 718, diagonal strut. Detailed implementation manners

[0039] 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 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.

[0040] Please refer to Figure 1 , assuming that the two sound sources to be collected are sound source 1 and sound source 2, and sound source 1 and sound source 2 are spaced apart in the horizontal direction and there is a certain height difference in the vertical direction. In order to obtain a better sound quality effect, in the traditional technology, it is necessary for the staff to continuously move the position of the microphone so that the microphone repeatedly moves between the two sound sources.

[0041] Since there is a certain height difference between the two sound sources, then the staff not only needs to move back and forth in the horizontal direction, but also needs to repeatedly lift and lower the microphone so that the microphone always maintains an appropriate distance from the sound source to be collected. Over time, it is easy to cause the staff to feel fatigued.

[0042] To solve the above problems, the present application proposes the following technical solutions:

[0043] Please refer to Figure 1 - Figure 10, A sound source acquisition device for film and television shooting, comprising a base 100. A lifting column 101 is provided on the top surface of the base 100, and a mounting plate 200 is fixedly provided at the top of the lifting column 101. Among them, universal wheels are provided at the bottom of the base 100. The lifting column 101 is distributed in the vertical direction, and the lifting column 101 is formed by sleeving an outer tube body 1011 and an inner tube body 1012 with each other. The outer tube body 1011 is fixedly connected to the base 100, and the inner tube body 1012 is movably inserted into the outer tube body 1011, while the mounting plate 200 is fixedly connected to the top of the inner tube body 1012. Therefore, by the telescopic movement of the lifting column 101, the height of the mounting plate 200 can be directly controlled to rise and fall.

[0044] This embodiment further includes a sound source acquisition rod 300, a first connecting rod 400, and a second connecting rod 500. Among them, a sound source acquisition component 600 is slidably connected to the bottom of the sound source acquisition rod 300 along its own axial direction; one end of the first connecting rod 400 is fixedly connected to the mounting plate 200, and the other end of the first connecting rod 400 is hinged to the sound source acquisition rod 300; one end of the second connecting rod 500 is slidably matched with the mounting plate 200, and a sliding sleeve 501 is hinged to the other end of the second connecting rod 500, and the sliding sleeve 501 is slidably sleeved outside the sound source acquisition rod 300. Specifically, the first connecting rod 400 and the second connecting rod 500 are formed by sleeving two tubular structures with each other, and the first connecting rod 400 and the second connecting rod 500 are parallel to each other and maintain a horizontal posture.

[0045] More specifically, the lengths of both the first connecting rod 400 and the second connecting rod 500 can be telescopic. And in the natural use state, the length of the first connecting rod 400 is greater than the length of the second connecting rod 500. The second connecting rod 500 is located directly below the first connecting rod 400. When the distance between the second connecting rod 500 and the first connecting rod 400 is small enough, the sound source acquisition rod 300 can also maintain a horizontal state.

[0046] Furthermore, a chute 201 distributed along the height direction of itself is opened on the surface of the mounting plate 200, as Figure 3As shown in the figure, a displacement block 202 is slidably arranged in a sliding groove 201, and one end of a second connecting rod 500 is fixedly connected to the displacement block 202. A bushing 203 is further arranged on the surface of the displacement block 202, a shaft rod 204 is movably inserted into the bushing 203, an annular flange 205 is arranged outside the shaft rod 204, a return spring 206 is arranged between the annular flange 205 and the end face of the bushing 203, and a plurality of shaft grooves 207 are evenly spaced along the height direction on the inner surface of the sliding groove 201; in the natural state, the inner end of the shaft rod 204 is inserted into the shaft groove 207, and at this time, the position of the displacement block 202 is fixed. Therefore, when a worker needs to adjust the height of the second connecting rod 500, only need to pull out the shaft rod 204 outward for a certain distance to make the inner end of the shaft rod 204 disengage from the shaft groove 207, and then push the shaft rod 204 upward or downward to control the synchronous lifting of the second connecting rod 500.

[0047] In addition, the sound source acquisition component 600 includes a sliding member 601, a hinge seat 602, a seat plate 603, a rotating column 604, a hinge portion 605 and a microphone 606. Among them, the sliding member 601 is slidably connected to the sound source acquisition rod 300, as Figure 6 shown, the bottom surface of the sliding member 601 is hinged to the seat plate 603 through the hinge seat 602, the rotating column 604 is rotatably connected to the bottom surface of the seat plate 603, the hinge portion 605 is fixedly arranged at the bottom end of the rotating column 604, and the microphone 606 is hinged to the hinge portion 605; a sliding opening 301 is formed in the bottom wall of the sound source acquisition rod 300 along its own length direction, and the sliding member 601 is slidably matched with the sliding opening 301. Since the seat plate 603 and the sliding member 601 are hinged, the seat plate 603 can always maintain a horizontal state under the action of gravity.

[0048] It should be noted that the rotating column 604 and the seat plate 603 are rotatably matched through a damping bearing, and an articulated member is arranged outside the microphone 606, and the articulated member and the hinge portion 605 are also rotatably matched through a damping bearing. Therefore, when actually acquiring the sound source, the worker can pre-rotate the angle of the microphone 606 to make the front end of the microphone 606 face the sound source, which is beneficial to the acquisition of sound.

[0049] In this embodiment, when the second connecting rod 500 slides along the height direction of the mounting plate 200, the sliding sleeve 501 can drive the sound source acquisition assembly 600 to slide along the axial direction of the sound source acquisition rod 300. Specifically, a pulley dragging assembly 700 is provided inside the sound source acquisition rod 300. The pulley dragging assembly 700 includes a first movable pulley 701, a second movable pulley 702, and a fixed pulley 703. The first movable pulley 701 and the second movable pulley 702 are connected to each other. The fixed pulley 703 is fixedly connected to the inner end of the sound source acquisition rod 300. A rope body 704 is provided on the outer frame of the fixed pulley 703. The free end of the rope body 704 sequentially bypasses the second movable pulley 702, the fixed pulley 703, the first movable pulley 701 and is fixedly connected to the sliding member 601; each pulley includes a wheel body and an outer frame, and the wheel body is rotatably arranged inside the outer frame.

[0050] Further, an elastic rope 302 is provided at one end of the sliding member 601 facing away from the rope body 704. The end of the elastic rope 302 away from the sliding member 601 is fixedly connected to the inner end of the sound source acquisition rod 300. And in the natural state, the elastic rope 302 is in a stretched state. Since the pulling force of the elastic rope 302 on the sliding member 601 is opposite to the pulling force of the rope body 704 on the sliding member 601, the elastic rope 302 is used to keep the rope body 704 always in a taut state.

[0051] Push sliding openings 303 distributed along the length direction of the sound source acquisition rod 300 are formed on the outer opposite side walls of the sound source acquisition rod 300, as Figure 4 shown. Push shafts 705 are provided on both sides of the outer frame of the first movable pulley 701, as Figure 6 shown. The two push shafts 705 respectively pass through the two push sliding openings 303 and are fixedly connected to the sliding sleeve 501. Therefore, the first movable pulley 701 and the sliding sleeve 501 always move synchronously. And since the first movable pulley 701 and the second movable pulley 702 are connected, the displacement of the sliding sleeve 501 can drive the sliding member 601 to move synchronously, and the ratio of the displacement distances of the two is 1∶4.

[0052] In the actual application process of this embodiment, when the sound source 1 and the sound source 2 are arranged side by side and there is a certain height difference, the staff needs to pre-adjust the height of the lifting column 101 and the lengths of the first connecting rod 400 and the second connecting rod 500, so that when the sound source acquisition rod 300 is in a horizontal state, the microphone 606 can be aligned with the higher-positioned sound source 1.

[0053] When the microphone 606 needs to collect the sound at the sound source 2, the staff can quickly lower the height of the second connecting rod 500 through the shaft rod 204. When the second connecting rod 500 is lowered, the sliding sleeve 501 will gradually move away from the end of the first connecting rod 400. Thus, under the action of the pulley dragging assembly 700, the sliding member 601 is pulled to move. Therefore, when the second connecting rod 500 descends, the microphone 606 can slide along the length direction of the sound source collecting rod 300. That is to say, the staff only needs to make a downward pulling action to control the microphone 606 to slide along the inclined direction, so that the microphone 606 moves from directly above the sound source 1 to directly above the sound source 2.

[0054] In another embodiment of the present application, the pulley dragging assembly 700 further includes an adjusting cylinder 706. The adjusting cylinder 706 is connected to the outer frame of the second movable pulley 702. A main shaft 707 is fixedly provided inside the adjusting cylinder 706. A winding wheel 708 is rotatably sleeved on the outer part of the main shaft 707. A steel wire rope 709 is wound around the winding wheel 708. One end of the steel wire rope 709 passes through the adjusting cylinder 706 and is connected to the outer frame of the first movable pulley 701. A clockwork spring 710 is also sleeved on the outer part of the main shaft 707. The inner end and the outer end of the clockwork spring 710 are respectively fixedly connected to the main shaft 707 and the winding wheel 708. In the natural state, the clockwork spring 710 is in a tightened state, and the clockwork spring 710 has a torsion force to drive the winding wheel 708 to tighten the steel wire rope 709, so that the steel wire rope 709 is in a tightened and straightened state.

[0055] Furthermore, the pulley dragging assembly 700 further includes a telescopic column 711. One end of the telescopic column 711 is fixedly connected to the inner wall of the adjusting cylinder 706. A locking block 712 is provided at the other end of the telescopic column 711. Teeth 713 are provided at the front end of the locking block 712. A toothed ring 714 is fixedly provided on the outer surface of the winding wheel 708. When the teeth 713 are engaged with the toothed ring 714, the winding wheel 708 cannot rotate. Obviously, when the winding wheel 708 cannot rotate, then when the first movable pulley 701 moves towards the side away from the second movable pulley 702, the steel wire rope 709 can pull the second movable pulley 702 and the first movable pulley 701 to move synchronously.

[0056] In addition, the telescopic column 711 is formed by sleeving two tubular structures with each other, and one of the tubular structures is fixedly connected to the inner wall of the adjusting cylinder 706, and a permanent magnet 715 is fixedly sleeved outside the other tubular structure. An electromagnet 716 is fixedly provided on the outer part of the telescopic column 711 and on the inner wall of the adjusting cylinder 706. When the electromagnet 716 is powered off, the permanent magnet 715 and the electromagnet 716 attract each other, and the tooth 713 is not in contact with the toothed ring 714. When the electromagnet 716 is powered on, the permanent magnet 715 and the electromagnet 716 repel each other and move away from each other, and the tooth 713 meshes with the toothed ring 714. In this embodiment, a battery (not shown in the figure) is further provided inside the sound source collecting rod 300. The battery is electrically connected to the electromagnet 716, and a circuit switch is also provided on the connection line between the battery and the electromagnet 716. The circuit switch is integrated on the mounting plate 200, so as to facilitate the staff to open and close it.

[0057] Friction columns 717 are movably penetrated through the opposite two side walls of the adjusting cylinder 706. An inclined strut 718 is hinged to the inner end of the friction column 717. As Figure 9 shown, the end of the inclined strut 718 far from the friction column 717 is hinged to the movable end of the telescopic column 711. When the electromagnet 716 is powered off, the outer end of the friction column 717 abuts against the inner surface of the sound source collecting rod 300, and the friction force between the friction column 717 and the inner surface of the sound source collecting rod 300 is greater than the torque of the clockwork spring 710. That is, when the electromagnet 716 is powered off, under the action of the two friction columns 717, the second movable pulley 702 can be fixed at a certain position inside the sound source collecting rod 300. At this time, when the sliding sleeve 501 carries the first movable pulley 701 away from the second movable pulley 702, the first movable pulley 701 can continuously pull out the steel wire rope 709, while the second movable pulley 702 can always remain stationary. At this time, the displacement distance ratio between the sliding sleeve 501 and the microphone 606 is 1:2.

[0058] In summary, in the specific application process of this embodiment, first adjust the height of the lifting column 101 and the lengths of the first connecting rod 400 and the second connecting rod 500, and adjust the distance between the first connecting rod 400 and the second connecting rod 500, so that in the initial state of the device, the sound source collecting rod 300 is in a horizontal state, and the height of the microphone 606 is slightly higher than that of the sound source 1.

[0059] When it is necessary to collect the sound of the sound source 1, then move the base 100 so that the microphone 606 is located above the sound source 1, and make the base 100 located on the side close to the sound source 2, as Figure 1The state shown. When it is necessary to collect the sound of the sound source 2, the staff manually pulls the shaft rod 204 downward, so that the sound source collection component 600 slides downward along the sound source collection rod 300 until the sound source collection component 600 moves above the sound source 2. When it is necessary to collect the sound of the sound source 1 again, the shaft rod 204 is controlled to move upward. Then, under the pulling action of the elastic rope 302, the sound collection component 600 can return to the position above the sound source 1 again. That is, the staff only needs to pull the shaft rod 204 up and down to control the sound source collection component 600 to repeatedly switch above the sound sources 1 and 2.

[0060] It is worth mentioning that when the electromagnet 716 is in the power-off state, the displacement ratio of the sliding sleeve 501 to the sound source collection component 600 is 1:2. When the electromagnet 716 is in the power-on state, the displacement ratio of the sliding sleeve 501 to the sound source collection component 600 is 1:4. Therefore, when the distance between the sound sources 1 and 2 is slightly large, the electromagnet 716 can be kept in the power-on state. When the distance between the sound sources 1 and 2 is slightly small, the electromagnet 716 can be kept in the power-off state, so as to adapt to a variety of different sound-producing occasions, which helps to improve the universality of the device.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0062] 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. A sound source acquisition device for film and television shooting, comprising a base (100), wherein a lifting column (101) is provided on the top surface of the base (100), and a mounting plate (200) is fixedly provided at the top of the lifting column (101), characterized in that, Further included are: a sound source collecting rod (300), the bottom of the sound source collecting rod (300) is slidably connected with a sound source collecting component (600) along its own axial direction; a first connecting rod (400), one end of the first connecting rod (400) is fixedly connected with the mounting plate (200), and the other end of the first connecting rod (400) is hinged to the sound source collecting rod (300); a second connecting rod (500), one end of the second connecting rod (500) is slidably matched with the mounting plate (200), the other end of the second connecting rod (500) is hinged with a sliding sleeve (501), and the sliding sleeve (501) is slidably sleeved outside the sound source collecting rod (300); When the second connecting rod (500) slides along the height direction of the mounting plate (200), the sliding sleeve (501) can drive the sound source collecting component (600) to slide along the axial direction of the sound source collecting rod (300).

2. The sound source acquisition device for film and television shooting according to claim 1, wherein: A chute (201) distributed along the height direction of the mounting plate (200) is formed on the surface of the mounting plate (200), a displacement block (202) is slidably arranged in the chute (201), and one end of the second connecting rod (500) is fixedly connected with the displacement block (202).

3. The sound source acquisition device for film and television shooting according to claim 2, characterized in that: A shaft sleeve (203) is further arranged on the surface of the displacement block (202), a shaft rod (204) is movably inserted into the shaft sleeve (203), an annular flange (205) is arranged outside the shaft rod (204), a return spring (206) is arranged between the annular flange (205) and the end face of the shaft sleeve (203), and a plurality of shaft grooves (207) are evenly spaced along the height direction on the inner surface of the chute (201); in the natural state, the inner end of the shaft rod (204) is inserted into the shaft groove (207).

4. The sound source acquisition device for film and television shooting according to claim 1, characterized in that: The lifting column (101) is formed by sleeving an outer tube body (1011) and an inner tube body (1012) with each other, the first connecting rod (400) and the second connecting rod (500) are also formed by sleeving two tubular structures with each other, and the first connecting rod (400) and the second connecting rod (500) are parallel to each other.

5. The sound source acquisition device for film and television shooting according to claim 1, characterized in that: The sound source collecting component (600) includes a sliding member (601), a hinge seat (602), a seat plate (603), a rotating column (604), a hinge portion (605) and a microphone (606), the sliding member (601) is slidably connected with the sound source collecting rod (300), the bottom surface of the sliding member (601) is hinged to the seat plate (603) through the hinge seat (602), the rotating column (604) is rotatably connected to the bottom surface of the seat plate (603), the hinge portion (605) is fixedly arranged at the bottom end of the rotating column (604), and the microphone (606) is hinged to the hinge portion (605); A sliding opening (301) is formed in the bottom wall of the sound source collecting rod (300) along its own length direction, and the sliding member (601) is slidably matched with the sliding opening (301).

6. The sound source acquisition device for film and television shooting according to claim 5, characterized in that: Inside the sound source collection rod (300), there is a pulley dragging component (700). The pulley dragging component (700) includes a first movable pulley (701), a second movable pulley (702) and a fixed pulley (703). The first movable pulley (701) is connected to the second movable pulley (702). The fixed pulley (703) is fixedly connected to one end inside the sound source collection rod (300). A rope body (704) is arranged on the outer frame of the fixed pulley (703). The free end of the rope body (704) sequentially bypasses the second movable pulley (702), the fixed pulley (703), the first movable pulley (701) and is fixedly connected to the sliding member (601). One end of the sliding member (601) facing away from the rope body (704) is provided with an elastic rope (302). One end of the elastic rope (302) far from the sliding member (601) is fixedly connected to the inner end of the sound source collection rod (300). And in the natural state, the elastic rope (302) is in a stretched state. On the outer opposite side walls of the sound source collection rod (300), there are push sliding openings (303) distributed along its own length direction. On both sides of the outer frame of the first movable pulley (701), there are push shafts (705). The two push shafts (705) respectively pass through the two push sliding openings (303) and are fixedly connected to the sliding sleeve (501).

7. The sound source acquisition device for film and television shooting according to claim 6, characterized in that: The pulley dragging component (700) further includes an adjusting cylinder (706). The adjusting cylinder (706) is connected to the outer frame of the second movable pulley (702). Inside the adjusting cylinder (706), there is a main shaft (707) fixedly arranged. An unwinding wheel (708) is rotatably sleeved on the outer part of the main shaft (707). A steel wire rope (709) is wound around the unwinding wheel (708). One end of the steel wire rope (709) passes through the adjusting cylinder (706) and is connected to the outer frame of the first movable pulley (701). On the outer part of the main shaft (707), there is also a clockwork spring (710) sleeved. The inner end and the outer end of the clockwork spring (710) are respectively fixedly connected to the main shaft (707) and the unwinding wheel (708). In the natural state, the steel wire rope (709) is in a tightened and straightened state.

8. The sound source acquisition device for film and television shooting according to claim 7, wherein: The pulley dragging component (700) further includes a telescopic column (711). One end of the telescopic column (711) is fixedly connected to the inner wall of the adjusting cylinder (706). The other end of the telescopic column (711) is provided with a locking block (712). The front end of the locking block (712) is provided with teeth (713). A toothed ring (714) is fixedly arranged on the outer surface of the unwinding wheel (708). When the teeth (713) are engaged with the toothed ring (714), the unwinding wheel (708) cannot rotate.

9. The sound source acquisition device for film and television shooting according to claim 8, characterized in that: The telescopic column (711) is formed by two tubular structures sleeved with each other, and one of the tubular structures is fixedly connected to the inner wall of the adjusting cylinder (706), and a permanent magnet (715) is fixedly sleeved outside the other tubular structure. An electromagnet (716) is fixedly arranged on the outer part of the telescopic column (711) and on the inner wall of the adjusting cylinder (706); when the electromagnet (716) is powered off, the permanent magnet (715) and the electromagnet (716) attract each other, and the tooth (713) is not in contact with the toothed ring (714); when the electromagnet (716) is powered on, the permanent magnet (715) and the electromagnet (716) repel each other and move away from each other, and the tooth (713) meshes with the toothed ring (714).

10. A sound source acquisition device for film and television shooting according to claim 9, characterized in that: Friction columns (717) are movably penetrated through the opposite two side walls of the adjusting cylinder (706). An inclined strut (718) is hinged to the inner end of the friction column (717), and the end of the inclined strut (718) far away from the friction column (717) is hinged to the movable end of the telescopic column (711); when the electromagnet (716) is powered off, the outer end of the friction column (717) abuts against the inner surface of the sound source collecting rod (300), and the frictional force between the friction column (717) and the inner surface of the sound source collecting rod (300) is greater than the torque of the clockwork spring (710).

Images