CN111770295A - Television camera lifting assembly and television - Google Patents

Television camera lifting assembly and television Download PDF

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Publication number
CN111770295A
CN111770295A CN202010603611.0A CN202010603611A CN111770295A CN 111770295 A CN111770295 A CN 111770295A CN 202010603611 A CN202010603611 A CN 202010603611A CN 111770295 A CN111770295 A CN 111770295A
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China
Prior art keywords
connecting rod
camera module
mounting base
camera
television
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Granted
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CN202010603611.0A
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Chinese (zh)
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CN111770295B (en
Inventor
蔡俊
李宇彬
万志雄
陈茂华
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Shenzhen Kangguan Technology Co ltd
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Shenzhen Kangguan Technology Co ltd
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Priority to CN202010603611.0A priority Critical patent/CN111770295B/en
Publication of CN111770295A publication Critical patent/CN111770295A/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00Details of television systems
    • H04N5/64Constructional details of receivers, e.g. cabinets or dust covers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Studio Devices (AREA)

Abstract

The invention discloses a television camera lifting assembly, which comprises a mounting base and a camera module, wherein the camera module is connected with the mounting base in a sliding manner along a lifting direction, and the television camera lifting assembly also comprises a first connecting rod, a second connecting rod and a translation driving mechanism which is arranged on the transverse side edge of the camera module and used for transverse driving, one end of the first connecting rod is rotatably connected with the mounting base, the other end of the first connecting rod is rotatably connected with the middle part of the second connecting rod, one end of the second connecting rod and the translation driving mechanism are relatively fixed in the driving direction, the other end of the second connecting rod and the camera module are relatively fixed in the lifting direction, so that when the translation driving mechanism is transversely driven, the position of the end, connected with. This TV camera lifting unit can solve TV camera lifting unit lift direction effectively and occupy the great problem of space ratio. The invention also discloses a television comprising the television camera lifting assembly.

Description

Television camera lifting assembly and television
Technical Field
The invention relates to the technical field of electrical equipment, in particular to a television camera lifting assembly and a television comprising the television camera lifting assembly.
Background
Along with the smart television gradually rises in the market, ultra-thin and narrow-frame models attract more and more attention, and the camera is gradually loaded to become the standard configuration of a plurality of middle-high-end smart televisions. In order to meet the requirements of the middle-high-end smart television market, the development of the lifting camera module is very important. At present, televisions are gradually intelligentized in the market, and the loading of cameras is already rising.
The television camera lifting module in the current market is mainly used for directly contacting the camera module in the vertical direction through an electric motor and pushing and pulling the camera module to move. Due to the lifting stroke, when developing a camera lifting module, the whole camera module must be designed to be too long and thin in the vertical direction, but the whole camera module is interfered with the appearance of a television and is not attractive. Therefore, how to optimize the camera lifting module makes the camera carried by an ultrathin ELED (lateral entry liquid crystal display) high-end machine type more uniform and beautiful, and the camera lifting module is more competitive in the market and is an important technical problem for developing the camera module.
In summary, how to effectively solve the problem that the lifting direction of the television camera lifting component occupies a large space is a problem that needs to be solved urgently by those skilled in the art at present.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide a tv camera lifting assembly, which can effectively solve the problem of large space occupation in the lifting direction of the tv camera lifting assembly, and a second object of the present invention is to provide a tv set including the tv camera lifting assembly.
In order to achieve the first object, the invention provides the following technical scheme:
the utility model provides a TV camera lifting unit, including the mounting base and with mounting base is along lift direction sliding connection's camera module, still includes head rod, second connecting rod and installs the horizontal side of camera module is in order to carry out transverse drive's translation actuating mechanism, head rod one end with mounting base rotates to be connected, the other end with the middle part of second connecting rod rotates to be connected, the one end of second connecting rod with translation actuating mechanism keeps relatively fixed, the other end with the camera module keeps relatively fixed at the lift direction at the direction of drive, with during translation actuating mechanism transverse drive, the second connecting rod with the one end that the camera module links to each other can adjust the position from top to bottom.
In this TV camera lifting unit, set up link mechanism between camera module and translation actuating mechanism, head rod and second connecting rod promptly to through head rod and second connecting rod, can turn into the horizontal translation drive of translation actuating mechanism vertical direction's lift removal, and simple structure, the mounting means is simple. And in the direction of lift, because head rod and second connecting rod can rotate to be the state of being nearly the superpose in the direction of lift to can fully compress the space in vertical direction, can install the side at the camera module with translation actuating mechanism, with fine realization transversely stagger, and then further reduce the occupation space of direction of lift, and the lateral thrust ratio of second connecting rod to the camera module is less, protection camera module that can be fine. In conclusion, the television camera lifting assembly can effectively solve the problem that the lifting direction of the television camera lifting assembly occupies a large space.
Preferably, one end of the second connecting rod is rotatably connected to the driving end of the translational driving mechanism through a first hinge shaft, the other end of the second connecting rod is rotatably connected to the camera module through a second hinge shaft, the first connecting rod is rotatably connected to the mounting base through a third hinge shaft, a connection line between the first hinge shaft and the third hinge shaft is perpendicular to a connection line between the second hinge shaft and the third hinge shaft, and a part of the first connecting rod and a part of the second connecting rod, which is located at a central point of the connection line between the first hinge shaft and the second hinge shaft, are rotatably connected.
Preferably, the translation driving mechanism is a linear driving electric motor module, and the electric motor module is locked and fixed on the mounting base through a screw.
Preferably, the first connecting rod and the second connecting rod are both linear rods, and the mounting base is an assembly housing.
Preferably, the electric motor module comprises an electric motor and a lead screw nut transmission mechanism.
Preferably, when the translational driving mechanism drives the second connecting rod to move so as to drive the camera module to retract, one end of the second connecting rod connected with the camera module inclines upwards.
Preferably, the lower extreme of camera module with the mounting base passes through slide rail slider mechanism sliding connection from top to bottom the upside of slide rail slider mechanism still is provided with the guide ring, the guide ring is fixed on the mounting base, and the cover is established in order to be in the transverse direction on the camera module to camera module spacing.
Preferably, slide rail slider mechanism is including fixed mounting slide rail and fixed mounting on the mounting base slide block on the camera module, the width direction both sides of camera module all are provided with and are protruding muscle setting the slider horizontal both sides of camera module correspond and are provided with the opening and set up relatively slide rail, the slider embedding in slide rail's the opening in order to slide in the slide rail spout.
Preferably, the end of the first connecting rod is rotatably connected with the mounting base through a hinged seat, the hinged seat is in screwed connection with the mounting base, and the sliding rail and the guide ring are in screwed connection with the mounting base.
In order to achieve the second object, the invention further provides a television, which includes any one of the above television camera lifting assemblies, and further includes a main body, wherein the mounting base of the television camera lifting assembly is located at the back side of the main body. Because the television camera lifting assembly has the technical effects, a television with the television camera lifting assembly also has corresponding technical effects.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a television camera lifting assembly provided in an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a television camera lifting assembly according to an embodiment of the present invention when a camera module is retracted;
fig. 3 is a schematic structural diagram of a television camera lifting assembly according to an embodiment of the present invention when a camera module is extended.
The drawings are numbered as follows:
the camera module comprises a component housing 100, a sliding guide rail 101, a guide ring 102, a fixing point 103, a camera module 110, a convex rib 111, an electric motor module 120, a push-pull rod 121, a connecting rod mechanism 130, a first connecting rod 131 and a second connecting rod 132.
Detailed Description
The embodiment of the invention discloses a television camera lifting assembly, which aims to effectively solve the problem that the space occupied by the lifting direction of the television camera lifting assembly is large.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to fig. 3, fig. 1 is a schematic structural diagram of a television camera lifting assembly according to an embodiment of the present invention; fig. 2 is a schematic structural diagram of a television camera lifting assembly according to an embodiment of the present invention when a camera module is retracted; fig. 3 is a schematic structural diagram of a television camera lifting assembly according to an embodiment of the present invention when a camera module is extended.
In one embodiment, the present embodiment provides a television camera lifting assembly, which is mainly used for being installed on a thin and light television. Specifically, the television camera lifting assembly mainly comprises a mounting base, a camera module 110, a first connecting rod 131, a second connecting rod 132 and a translation driving mechanism.
The mounting base is used for being mounted on the television body, and the mounting base is used for directly or indirectly supporting and fixing other components. Specifically, the mounting base may be mounted on the assembly housing 100, such as by a screw connection; the mounting base may also be part of the component housing 100, and in particular, the mounting base may be the component housing 100.
Wherein the camera module 110 is slidably connected to the mounting base in the lifting direction to be slidably connected to the mounting base through the camera module 110 to be capable of being extended for image pickup work and being retracted for concealment. The sliding connection between the camera module 110 and the mounting base is mainly realized by a sliding rail slider.
Wherein the translation driving mechanism is mounted on the mounting base for lateral driving so that the translation driving mechanism can be mounted at a lateral side position of the camera module 110. The translation driving mechanism may be an air cylinder, and for convenience of installation, it is preferable that the translation driving mechanism is a linear driving electric motor module 120, and the electric motor module 120 is fixed on the installation base by screw locking. Specifically, the electric motor module 120 includes an electric motor and a lead screw nut transmission mechanism, but the electric motor module 120 may also be a combination structure of the electric motor and a slider-crank mechanism.
One end of the first connecting rod 131 is rotatably connected to the mounting base, the other end of the first connecting rod 131 is rotatably connected to the middle of the second connecting rod 132, one end of the second connecting rod 132 and the translational driving mechanism are relatively fixed in the driving direction, and the other end of the second connecting rod 132 and the camera module 110 are relatively fixed in the lifting direction, so that when the translational driving mechanism drives the end of the second connecting rod 132 to move transversely, the first connecting rod 131 supports and limits the middle of the second connecting rod 132, so that the position of the end of the second connecting rod 132 connected to the camera module 110 is adjusted in the lifting direction, and the end of the second connecting rod 132 and the camera module 110 are relatively fixed in the lifting direction, so that the camera module 110 can be driven to lift in the lifting direction.
In this television camera lifting assembly, the link mechanism 130, i.e., the first connecting rod 131 and the second connecting rod 132, is disposed between the camera module 110 and the translation driving mechanism, so that the horizontal translation driving of the translation driving mechanism can be converted into the lifting movement in the vertical direction through the first connecting rod 131 and the second connecting rod 132, and the television camera lifting assembly is simple in structure and simple in installation manner. And in the direction of lift, because first connecting rod 131 and second connecting rod 132 can rotate to be nearly the state of superpose at the direction of lift to can fully compress the space in the vertical direction, with can install translation actuating mechanism in the side of camera module 110, with fine realization transversely stagger, and then further reduce the occupation space of direction of lift, and the lateral thrust ratio of second connecting rod 132 to camera module 110 is less, protection camera module 110 that can be fine. In conclusion, the television camera lifting assembly can effectively solve the problem that the lifting direction of the television camera lifting assembly occupies a large space.
Further, one end of the second connecting rod 132 as described above is kept relatively fixed to the translational driving mechanism in the driving direction, and the other end is kept relatively fixed to the camera module 110 in the elevating direction. Specifically, one end of the second connecting rod 132 may be rotatably connected to the translational driving mechanism, and the other end thereof may be slidably connected to the camera module 110 in a transverse direction, such as a driving direction; one end of the second connecting rod 132 may be slidably connected to the translational driving mechanism in the lifting direction, and the other end may be rotatably connected to the camera module 110.
For convenience of connection, it is preferable that one end of the second connecting rod 132 is rotatably connected to the driving end of the translational driving mechanism through a first hinge shaft, the other end is rotatably connected to the camera module 110 through a second hinge shaft, and the first connecting rod 131 is rotatably connected to the mounting base through a third hinge shaft, wherein a connection line of the first hinge shaft and the third hinge shaft is perpendicular to a connection line of the second hinge shaft and the third hinge shaft, so that the first hinge shaft, the second hinge shaft and the third hinge shaft can be connected to form a right triangle, and the third connecting rod is located at a right angle point. And the parts of the first connecting rod 131 and the second connecting rod 132 located at the center point of the connecting line of the first hinge shaft and the second hinge shaft are rotatably connected, that is, the first connecting rod 131 forms the center line of the right triangle, and the second connecting rod 132 forms the hypotenuse of the right triangle, according to the structural characteristics of the diameter triangle, the center line of the hypotenuse is half of the length of the hypotenuse, and when the translational driving mechanism drives the end of the second connecting rod 132 along the connecting line of the first hinge shaft and the third hinge shaft, it can be ensured that the other end of the second connecting rod 132 moves along the connecting line of the second hinge shaft and the third hinge shaft. It should be noted that, an extending direction of a connecting line between the first hinge shaft and the third hinge shaft is generally a horizontal direction and is consistent with a driving direction of the translation driving mechanism, and an extending direction of a connecting line between the second hinge shaft and the third hinge shaft is generally a vertical direction and is consistent with a lifting direction. Therefore, the link mechanism 130 drives the camera module 110 to move only in the vertical direction, and the moving friction of the camera module 110 can be minimized, theoretically, zero friction.
It should be noted that, the first hinge shaft, the second hinge shaft, the third hinge shaft, and the fourth hinge shaft hinged between the first connecting rod 131 and the second connecting rod 132 are all disposed in parallel, and are all disposed perpendicular to the driving direction of the translational driving, and are all disposed perpendicular to the lifting direction, which is generally the panel direction of the television. The first connecting rod 131 and the second connecting rod 132 are preferably straight rods, but may also be curved rods, so as to complete the above-mentioned transmission, and are generally metal rods, or may also be hard plastic rods.
Further, in order to avoid forming a self-lock, and the transverse driving of the translational driving mechanism cannot be converted into the driving in the lifting direction, it is preferable that, here, when the translational driving mechanism drives the second connecting rod 132 to move to drive the camera module 110 to retract, one end of the second connecting rod 132 connected to the camera module 110 is still inclined upwards, so as to ensure that the transverse driving force of the translational driving mechanism can be converted into more lifting convenience through inclination, so as to ensure that the camera module 110 can be easily applied with force, i.e., the camera module 110 can be started to be pushed to lift. It should be noted that, when the camera module 110 is in the retracted state, the angle at which the end of the second connecting rod 132 connected to the camera module 110 is inclined upward is not too large, and if it is too large, the compressing effect in the lifting direction is not good.
Further, although the camera module 110 can be connected to slide up and down through the slide rail and slider mechanism, when the camera module 110 is started to extend, the gap between the components can cause the camera module to slightly tilt, which easily causes the camera module 110 to be unable to accurately extend from the top gap of the assembly housing 100, and the camera module is jammed. Based on this, preferably, a guide ring 102 is further disposed on the upper side of the sliding track slider mechanism, wherein the guide ring 102 is fixed on the mounting base and is sleeved on the camera module 110 to limit the camera module 110 in the transverse direction, so that when the camera module 110 receives a transverse acting force, the guide ring 102 bears the acting force in advance, thereby effectively protecting the sliding track slider mechanism and ensuring the lifting effect of the camera module 110.
In order to facilitate the sliding connection, it is preferable that the sliding rail and slider mechanism includes a sliding rail 101 fixedly mounted on the mounting base and a slider fixedly mounted on the camera module 110, wherein the slider is disposed on both sides of the camera module 110 in the width direction, the sliding rail 101 is disposed on both sides of the camera module 110 in the transverse direction, the openings of the sliding rail 101 are disposed opposite to each other, and the slider is inserted into the opening of the sliding rail 101 to slide in the sliding groove of the sliding rail 101.
Furthermore, in order to facilitate the disassembly and assembly, it is preferable that the end of the first connecting rod 131 is rotatably connected to the mounting base through a hinge seat, the hinge seat is connected to the mounting base by screws, and the corresponding slide rail and the corresponding guide ring 102 are both connected to the mounting base by screws. So that the first connecting rod 131, the second connecting rod 132, the slide guide 101, the guide ring 102 and the translational drive mechanism can be removed from the mounting base as a whole.
In one embodiment, the present embodiment provides a tv camera lifting assembly comprising an assembly housing 100, a camera module 110, a motor module 120, and a linkage mechanism 130, as shown in fig. 1. The transverse positioning of the camera module 110 on the assembly housing 100 is realized by matching the convex ribs 111 on the camera module 110 with the sliding guide rails 101 on the assembly housing 100, namely, the convex ribs 111 are respectively arranged on two sides of the width direction of the camera module 110, the sliding guide rails 101 clamped on the convex ribs 111 are correspondingly arranged on two sides of the assembly housing 100, and the clamping grooves matched with the convex ribs on the two sliding guide rails 101 are oppositely arranged to form a limiting groove wall limited in the width direction. The cross section of the sliding guide rail 101 in the up-down direction is in a side U shape and is oppositely arranged. In order to facilitate the sliding of the rib 111 on the slide rail 101, it is preferable that the rib 111 is further provided with a roller to roll on the stopper surface of the slide rail 101. Note that, the lateral direction refers to directions perpendicular to the lifting direction.
The nested guide rings 102 on the assembly housing 100 also limit the lateral movement of the camera module 110 so that the camera module 110 can only move in a vertical direction. The electric machine motor module 120 is directly locked to the assembly housing 100 by screws. The first connecting rod 131 in the link mechanism module 130 has one end locked and rotatably attached to the fixing point 103 of the module case 100, and the other end locked and rotatably attached to the midpoint of the second connecting rod 132, that is, the two ends of the first connecting rod 131 are respectively hinged to the fixing point 103 and the midpoint of the second connecting rod 132. And one end of the second connecting rod 132 is rotatably locked to the push-pull rod 121 of the electric motor module 120, and the other end is rotatably locked to the camera module 110.
With the above-described connection, further analysis is performed as follows, specifically as follows, with retraction and extension from the camera module 110.
As shown in fig. 2, the electromechanical motor module 120 pulls the camera module 110 to retract, specifically, the push-pull rod 121 of the electromechanical motor module 120 is at the rightmost end, and at this time, the second connecting rod 132 forms a certain angle with the horizontal line, that is, the end of the second connecting rod 132 connected to the camera module 110 is inclined upwards, so that the push-pull rod 121 of the electromechanical motor module 120 can push the second connecting rod 132 to move conveniently. The left end of the second connecting rod 132 is on the same vertical line with the fixed point 103, and the right end of the second connecting rod 132 is on the same horizontal line with the fixed point 103, and these three points form a right triangle. At this time, the camera module 110 is at the bottom position, and the camera is in the closed state.
In this state, the push-pull rod 121 transmits horizontal power to the second connecting rod 132 by the power output of the electric motor module 120, and the right end of the second connecting rod 132 receives the horizontal power, and the left end of the second connecting rod 132 starts to move vertically upward by the power transmission of the link mechanism module 130, so as to drive the camera module 110 to move vertically upward.
When the camera module 110 is moved up to extend, as shown in fig. 3 of the drawings. The push-pull rod 121 of the electric motor module 120 moves to the leftmost end, and at this time, the camera module 110 has risen to the topmost end, and the camera enters a working state.
When the camera module 110 needs to enter the closed state, the motor module 120 can drive the push-pull rod 121 to move horizontally to the right, and the camera module 110 moves vertically and downwards through the power transmitted by the link mechanism module 130 until the push-pull rod 121 returns to the rightmost end and the camera module 110 returns to the bottommost end. At this point, the camera module 110 completes one elevating movement.
Based on the television camera lifting assembly provided in the above embodiment, the invention further provides a television, which includes any one of the television camera lifting assemblies in the above embodiments, and further includes a main body, and a mounting base of the television camera lifting assembly is located on a back side of the main body. Because the television adopts the television camera lifting assembly in the embodiment, please refer to the embodiment for the beneficial effects of the television.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. The utility model provides a TV camera lifting unit, including the mounting base and with mounting base follows lift direction sliding connection's camera module, its characterized in that still includes head rod, second connecting rod and installs the horizontal side of camera module is in order to carry out transverse drive's translation actuating mechanism, the one end of head rod with mounting base rotates to be connected, the other end with the middle part of second connecting rod rotates to be connected, the one end of second connecting rod with translation actuating mechanism keeps relatively fixed, the other end at the direction of drive with the camera module keeps relatively fixed at the lift direction, with during translation actuating mechanism transverse drive, the second connecting rod with the position can be adjusted from top to bottom to the one end that the camera module links to each other.
2. The tv camera lifting assembly according to claim 1, wherein one end of the second connecting rod is rotatably connected to the driving end of the translational driving mechanism through a first hinge shaft, and the other end of the second connecting rod is rotatably connected to the camera module through a second hinge shaft, the first connecting rod is rotatably connected to the mounting base through a third hinge shaft, a connecting line between the first hinge shaft and the third hinge shaft is perpendicular to a connecting line between the second hinge shaft and the third hinge shaft, and the first connecting rod is rotatably connected to a portion of the second connecting rod located at a central point of the connecting line between the first hinge shaft and the second hinge shaft.
3. The television camera lift assembly of claim 2, wherein the translation drive mechanism is a linear drive electromechanical motor module that is secured to the mounting base by a screw lock.
4. The television camera lift assembly of claim 3, wherein the first connecting rod and the second connecting rod are both linear rods and the mounting base is an assembly housing.
5. The television camera lift assembly of claim 4, wherein the motor module includes a motor and a lead screw nut drive mechanism.
6. The television camera lifting assembly of claim 1, wherein an end of the second connecting rod coupled to the camera module tilts upward when the translational drive mechanism drives the second connecting rod to move to retract the camera module.
7. The television camera lifting assembly according to any one of claims 1 to 6, wherein the lower end of the camera module is slidably connected to the mounting base up and down by a slide rail and slider mechanism, and a guide ring is further disposed on the upper side of the slide rail and slider mechanism, the guide ring is fixed to the mounting base and is sleeved on the camera module to limit the camera module in the transverse direction.
8. The television camera lifting assembly according to claim 7, wherein the slide rail and slide block mechanism comprises a slide rail fixedly mounted on the mounting base and a slide block fixedly mounted on the camera module, the slide block is provided with a convex rib at both sides in the width direction of the camera module, the slide rail with opposite openings is correspondingly provided at both sides in the transverse direction of the camera module, and the slide block is embedded in the opening of the slide rail to slide in the slide rail sliding groove.
9. The television camera lifting assembly of claim 8, wherein an end of the first connecting rod is rotatably connected to the mounting base via a hinge seat, the hinge seat is screwed to the mounting base, and the slide rail and the guide ring are screwed to the mounting base.
10. A television set comprising a body and further comprising the television camera lift assembly of any of claims 1-9, the mounting base of the television camera lift assembly being located on a back side of the body.
CN202010603611.0A 2020-06-29 2020-06-29 Television camera lifting assembly and television Active CN111770295B (en)

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