Patent Publication Number: US-2020296318-A1

Title: Installation support and display device

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     The present application claims the benefit of Chinese Patent Application No. 201920335063.0 filed on Mar. 15, 2019, the contents of which are incorporated herein by reference in their entirety. 
     TECHNICAL FIELD 
     The present disclosure relates to the technical field of display installation, in particular to an installation support and a display device. 
     BACKGROUND 
     Relying on the booming of the LED (Light Emitting Diode) industry, increasing numbers of new types LED displays are emerging in the market, including fixed screens, stage screens, rental screens and television screens. The rental screen makes its sales far ahead of other types of display screens, benefiting from its quick installation, disassembly and maintenance. Typically used in activities such as commercial publicity, stage leasing and etc, the rental screens can be lifted, installed on the ground or fixed. Customers have increasing demands for assembling multiple display screens in such industrial environment. It is of great importance that the operation experience in the left-right installation and the up-down installation between the box bodies when multiple display screens are assembled. An improved operation experience would induce a reduction in the labor force and the cost required for the display installation, and enables the display screens to compete and excel in the market. The display screen typically needs to be installed on the installation support. In order to splice multiple displays more conveniently, it is particularly important to control the weight of the installation support. A lighter weight of the installation support would ease the installation. Therefore, it is required an installation support with a lighter weight and a guaranteed strength. 
     SUMMARY 
     For above, it is essential to provide an installation support and a display device. 
     The present disclosure relates to an installation support, which includes at least two carbon-fiber vertical frames, and two aluminum-alloy horizontal frames. Each of the carbon-fiber vertical frames are spaced in sequence. One end of each carbon-fiber vertical frame is connected to one of the aluminum-alloy horizontal frames, and the other end of each carbon-fiber vertical frame is connected to the other aluminum-alloy horizontal frame. 
     According to the installation supports, the aluminum-alloy horizontal frames of each installation support have the same strength in all directions, so that the aluminum-alloy horizontal frames are suitable for mounting heavy objects, and the aluminum-alloy horizontal frames are not easy to break due to gravity when mounting the heavy objects. Additionally, the manufacturing precision of aluminum-alloy materials is high, and the aluminum-alloy horizontal frames can be repeatedly processed to ensure the precision of the aluminum-alloy horizontal frames. When the two aluminum-alloy horizontal frames of the two installation supports are mounted, the two aluminum-alloy horizontal frames of the two installation supports can be more accurately matched with each other. The carbon-fiber vertical frame has higher strength in one direction, and the carbon-fiber vertical frame is configured for bearing the force exerted by one aluminum-alloy horizontal frame towards or away from the other aluminum-alloy horizontal frame, so that a good bearing effect is achieved. The weight of the carbon fiber is lower than that of the aluminum-alloy material, so that the overall weight of the installation support is lighter and the strength is higher. 
     In one embodiment, the carbon-fiber vertical frame is cylindrical. 
     In one embodiment, each of the aluminum-alloy horizontal frames defines at least two installation grooves corresponding one-to-one to the carbon-fiber vertical frames. One end of each carbon-fiber vertical frame is inserted into one of the installation grooves on one aluminum-alloy horizontal frame, and the other end of each carbon-fiber vertical frame is inserted into another one of the installation grooves of the other aluminum-alloy horizontal frame. 
     In one embodiment, each aluminum-alloy horizontal frame defines a groove. 
     In one embodiment, the groove is configured to receive a reinforcing rib, and two ends of the reinforcing rib are respectively connected to two side walls of the groove. 
     In one embodiment, each of the aluminum-alloy horizontal frames includes a first frame, a second frame, a third frame, a first supporting beam and a second supporting beam. One end of the first frame is connected to one end of the second frame, and the other end of the first frame is connected to the third frame. An end of the second frame away from the first frame is connected to one carbon-fiber vertical frame, an end of the third frame away from the first frame is connected to another carbon-fiber vertical frame. An end of the first supporting beam is connected to a position of the first frame away from the second frame, and the other end of the first supporting beam is connected to a position of the second frame away from the first frame. An end of the second supporting beam is connected to a position of the first frame away from the third frame, and the other end of the second supporting beam is connected to a position of the third frame away from the first frame. 
     In one embodiment, the installation support further includes a climbing frame. the climbing frame is respectively connected to at least two carbon-fiber vertical frames at positions away from ends of the carbon-fiber vertical frames. 
     In one embodiment, it further includes a fixing shaft. The carbon-fiber vertical frame defines a first through hole. The aluminum-alloy horizontal frame defines second through hole. The fixing shaft penetrates through the first through hole and the second through hole. 
     In one embodiment, each of the aluminum-alloy horizontal frames includes a supporting surface perpendicular to an axial direction of the carbon-fiber vertical frame, and the two supporting surfaces of the two aluminum-alloy horizontal frames are positioned in a same direction. 
     The present disclosure also provides a display device, which includes a display screen and an installation support as described above. The display screen is connected to the aluminum-alloy horizontal frame. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective schematic diagram of an installation support according to one embodiment of the present disclosure; 
         FIG. 2  is an exploded schematic diagram of an installation support according to one embodiment of the present disclosure, shown in a perspective view; 
         FIG. 3  is a perspective structural diagram of an installation support according to another embodiment of the present disclosure, shown in one perspective; 
         FIG. 4  is a perspective structural diagram of an installation support according to some other embodiment of the present disclosure, shown in one perspective. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     In order to facilitate the appreciation of the present disclosure, the present disclosure will be described in details with reference to the relevant drawings. the drawings illustrate a preferred embodiment of the present disclosure. However, the present disclosure can be implemented in many other different forms and therefore is not limited to the embodiments described herein. these embodiments are provided for a more thorough and comprehensive appreciation of the present disclosure. 
     Unless otherwise defined, all technical and scientific terms recited herein have a same meaning as commonly understood by those skilled in the art. the terminology used in the description of the present disclosure herein is only for illustrative purpose and thus not intended to limit the present disclosure. As recited herein, the term “and/or” includes any and all combinations of one or more related listed items. 
     In order to provide an installation support which is light in weight and ensured in strength, as shown in  FIGS. 1 and 2 , in one embodiment, an installation support  10  includes at least two carbon-fiber vertical frames  200  and two aluminum-alloy horizontal frames  100 . In the present embodiment, the carbon-fiber vertical frames  200  are made of carbon fiber, and the aluminum-alloy horizontal frames  100  are made of aluminum alloy. The carbon-fiber vertical frames  200  are arranged with distance intervals in sequence, one end of each carbon-fiber vertical frame  200  is connected to one aluminum-alloy horizontal frame  100 , and the other end of each carbon-fiber vertical frame  200  is connected to the other aluminum-alloy horizontal frame. In the present embodiment, the two aluminum-alloy horizontal frames  100  are configured to bear heavy objects, and the carbon-fiber vertical frames  200  are configured to bear the force exerted by one of the aluminum-alloy horizontal frames  100  toward or away from the other aluminum-alloy horizontal frame  100 . 
     In the present embodiment, a number of the carbon-fiber vertical frames  200  is two, and the two carbon-fiber vertical frames  200  and the two aluminum-alloy horizontal frames  100  are connected to each other to form a rectangular frame. Specifically, the two carbon-fiber vertical frames  200  include a first carbon-fiber vertical frame  210  and a second carbon-fiber vertical frame  220 , and the two aluminum-alloy horizontal frames  100  include a first aluminum-alloy horizontal frame  101  and a second aluminum-alloy horizontal frame  102 . The first carbon-fiber vertical frame  210 , the first aluminum-alloy horizontal frame  101 , the second carbon-fiber vertical frame  220  and the second aluminum-alloy horizontal frame  102  are sequentially connected, and the second aluminum-alloy horizontal frame  102  is connected to the first carbon-fiber vertical frame  210 , forming a rectangular frame. Specifically, the first end of the first carbon-fiber vertical frame  210  is connected to the first end of the first aluminum-alloy horizontal frame  101 ; the second end of the first carbon-fiber vertical frame  210  is connected to the first end of the second aluminum-alloy horizontal frame  102 ; the first end of the second carbon-fiber vertical frame  220  is connected to the second end of the first aluminum-alloy horizontal frame  101 ; and the second end of the second carbon-fiber vertical frame  220  is connected to the second end of the second aluminum-alloy horizontal frame  102 . 
     Referring to  FIGS. 1 and 2 , the aforementioned installation supports  10  have the same strength in all directions of the aluminum-alloy horizontal frame  100  regarding each installation support  10 . The aluminum-alloy horizontal frame  100  is suitable for bearing heavy objects. The aluminum-alloy horizontal frame  100  is not easy to break under gravity when mounting heavy objects. Additionally, the aluminum-alloy material is precise in manufacturing reproduction, and can be repeatedly processed to ensure the accuracy of the aluminum-alloy horizontal frame  100 . When the two aluminum-alloy horizontal frames  100  of the two installation supports  10  are mounted, the two aluminum-alloy horizontal frames  100  can be matched with each other more accurately. The bearing strength is high of the carbon-fiber vertical frame  200  in one direction, so that the carbon-fiber vertical frame  200  can be configured for bearing the force exerted by one of the aluminum-alloy horizontal frames  100  towards or away from the other aluminum-alloy horizontal frame  100 . A good bearing effect is thus achieved. The weight of the carbon fiber material is comparatively lower than that of the aluminum-alloy, so that the overall weight of the installation support is lighter and the strength is higher. 
     In one embodiment, the length of the aluminum-alloy horizontal frame is greater than its width, and the length of the carbon-fiber vertical frame is greater than its width. The aluminum-alloy horizontal frame has a higher strength in the width direction, thus being suitable for bearing the force in the width direction. While the carbon-fiber vertical frame has higher strength in the length direction, thus being suitable for bearing the force in the length direction, thus ensuring the strength of the installation support. In the present embodiment, the width direction of the aluminum-alloy horizontal frame may also be referred to as radial direction. 
     It should be appreciated that, compared with the installation supports are integrally provided with carbon-fibers, the aluminum-alloy horizontal frame of the present application can better ensure the manufacturing accuracy, further ensure the installation accuracy when a plurality of installation supports matches to cooperate. This arrangement can ensure the stress intensity when the installation support bears a heavy object. Compared with the related installation support which is integrally provided with aluminum-alloy, the carbon-fiber vertical frame of the present disclosure has higher strength and makes the entire installation support lighter. Therefore, the installation support of the present disclosure has a lighter entire weight and a higher bearing strength. 
     It should be appreciated that the number of the carbon-fiber vertical frames may be two or more, and in one embodiment, the number of the carbon-fiber vertical frames is three. In one embodiment, the number of carbon-fiber vertical frames is four. The number of carbon-fiber vertical frames improves the overall carrying capacity of entire carbon-fiber vertical frames and increases the cost of the support installation. Therefore, the number of carbon-fiber vertical frames should depend on the actual practice. 
     In order to improve the strength of the carbon-fiber vertical frame  200 , as shown in  FIGS. 1 and 2 , in one embodiment, the carbon-fiber vertical frame  200  is provided in a cylindrical shape. That is, the carbon-fiber vertical frame  200  is a hollow cylinder. The carbon-fiber vertical frame  200  arranged in a cylindrical shape has high strength in the axial direction, so as to better carry the force exerted by one of the aluminum-alloy horizontal frames  100  toward or away from the other one of the aluminum-alloy horizontal frames  100 . Specifically, the cross-section is circular of the carbon-fiber vertical frame  200 . The cylindrical carbon-fiber vertical frame  200  can uniformly distribute stress to the surface of the carbon-fiber vertical frame  200 , so that the strength of the carbon-fiber vertical frame  200  is higher. In another embodiment, the cross section of the carbon-fiber vertical frame is a quadrangular prism, and the carbon-fiber vertical frame is hollow. Namely, the carbon-fiber vertical frame is arranged as a hollow quadrangular prism. In another embodiment, the cross-sectional is polygonal of the carbon-fiber vertical frame, and the carbon-fiber vertical frame is hollow. 
     In order to install the carbon-fiber vertical frame, in one embodiment, each of the aluminum-alloy horizontal frames is provided with at least two installation grooves corresponding one-to-one to the carbon-fiber vertical frames. One end of each carbon-fiber vertical frame is inserted into one of the installation grooves on one aluminum-alloy horizontal frame. And the other end of each carbon-fiber vertical frame is inserted into another one of the installation grooves of the other aluminum-alloy horizontal frame. The carbon-fiber vertical frame is inserted into the installation groove, so that the carbon-fiber vertical frame is limited and fixed through the side wall of the installation groove, implementing the connection between the carbon-fiber vertical frame and the aluminum-alloy horizontal frame. As shown in  FIG. 2 , in the present embodiment, the first aluminum-alloy horizontal frame  101  is provided with two first installation grooves  103 , and the second aluminum-alloy horizontal frame  102  is provided with two second installation grooves  104 . Each of the first installation grooves  103  is correspondingly arranged with one of the second installation grooves  104 . One end of each the carbon-fiber vertical frame  200  is inserted into one of the first installation grooves  103 , and the other end is inserted into one of the second installation grooves  104 , so that the carbon-fiber vertical frames  200  are connected to the aluminum-alloy horizontal frame  100 . 
     In order to make the aluminum-alloy horizontal frame  100  lighter, as shown in  FIG. 4 , in one embodiment, each of the aluminum-alloy horizontal frames  100  is provided with a groove  105 . In the present embodiment, each of the aluminum-alloy horizontal frames  100  is provided with a groove  105  at a position far away from the carbon-fiber vertical frame  200 . Specifically, one side of the aluminum-alloy horizontal frame  100  is provided with a groove  105 , and the side adjacent to the groove  105  of the aluminum-alloy horizontal frame  100  is connected to the carbon-fiber vertical frame  200 . The groove  105  is configured for reducing the weight of the aluminum-alloy horizontal frame  100 , and the aluminum-alloy horizontal frame  100  is lighter. 
     In order to ensure the strength of the aluminum-alloy horizontal frame  100  after the groove  105  is provided, as shown in  FIG. 4 , in one embodiment, a reinforcing rib  170  is provided in the groove  105 , and both ends of the reinforcing rib  170  are respectively connected to two side walls of the groove  105 . Thus, both ends of the reinforcing rib  170  are respectively connected to two opposite side walls of the groove  105 . As such, the reinforcing ribs  170  can support the two side walls of the groove  105  to prevent the side walls of the groove  105  from deforming in facing or opposite directions. The strength is ensured of the aluminum-alloy horizontal frame  100  after the groove  105  is provided. In the present embodiment, the reinforcing rib  170  is further connected to the bottom of the groove  105 , thereby further increasing the strength of the aluminum-alloy horizontal frame  100 . 
     In order to increase the strength of the aluminum-alloy horizontal frame  100 , as shown in  FIGS. 1 and 2 , in one embodiment, each of the aluminum-alloy horizontal frames  100  includes a first frame  110 , a second frame  120 , a third frame  130 , a first supporting beam  140  and a second supporting beam  150 . One end of the first frame  110  is connected to one end of the second frame  120 , and the other end of the first frame  110  is connected to the third frame  130 . One end of the second frame  120  away from the first frame  110  is connected to the carbon-fiber vertical frame  200 , and one end of the third frame  130  away from the first frame  110  is connected to the other carbon-fiber vertical frame  200 . One end of the first supporting beam  140  is connected to the position of the first frame  110  away from the second frame  120 , and the other end of the first supporting beam  140  is connected to the position of the second frame  120  away from the first frame  110 . One end of the second supporting beam  150  is connected to a position of the first frame  110  away from the third frame  130 , and the other end of the second supporting beam  150  is connected to a position of the third frame  130  away from the first frame  110 . When the first frame  110  is stressed, the stress on the first frame  110  is distributed to the second frame  120  through the first supporting beam  140 , and the stress on the first frame  110  is distributed to the third frame  130  through the second supporting beam  150 , so that the first frame  110  can bear higher stress. 
     In one embodiment, the length of the first frame is greater than its width, and the length direction of the first frame is perpendicular to the length direction of the carbon-fiber vertical frame, so that the first frame is not vulnerable to break under the force in the width direction. In the present embodiment, the length direction of the first frame is perpendicular to the axial direction of the carbon-fiber vertical frame, so that the first frame is not vulnerable to break under the force in the width direction. 
     In order to realize the inter-connection of the first frame, the second frame, the third frame, the first supporting beam and the second supporting beam, in one embodiment, the first frame  110 , the second frame  120 , the third frame  130 , the first supporting beam  140  and the second supporting beam  150  are integrally formed, thereby realizing the connection of the first frame, the second frame, the third frame, the first supporting beam and the second supporting beam. In another embodiment, the first frame, the second frame, the third frame, the first supporting beam and the second supporting beam are welded. In some another embodiment, the first frame, the second frame, the third frame, the first supporting beam and the second supporting beam are connected by threads. 
     As shown in  FIGS. 1 and 2 , in one embodiment, the first supporting beam  140  is arranged curved, bending towards the joint of the first frame  110  and the second frame  120 . So the axial direction of the first supporting beam  140  near one end of the first frame  110  tends to be perpendicular to the axial direction of the first frame  110 . That is, the angle is tends to be smaller between the axial direction of the first supporting beam  140  close to one end of the first frame  110  and the radial direction of the first frame  110 . And the radial force of the first frame  110  are executed on the first supporting beam, and are better distributed along the first supporting beam  140 . Additionally, the force of the first supporting beam  140  near one end of the second frame  120  is distributed to the radial direction of the second frame  120 . As such, the stress tolerance of the aluminum-alloy horizontal frame  100  increases. The second supporting beam  150  has a similar principle as the first supporting beam  140 , which enables the stress on the first frame  110  to be better distributed to the third frame  130 . 
     In order to maintain the objects hung on the installation support  10  more conveniently, as shown in  FIGS. 1 and 2 , in one embodiment, the installation support  10  further includes a climbing frame  300 . The climbing frame  300  is respectively connected to the at least two of the carbon-fiber vertical frames  200 , and the climbing frame  300  is connected to the carbon-fiber vertical frames  200  at a position far away from its ends. The climbing frame  300  is convenient for a user to climb to the installation support  10 , thereby enabling the maintenance of the objects hung on the installation support  10  conveniently. 
     In order to ensure the radial strength of the climbing frame, in one embodiment, the climbing frame is made of aluminum alloy which has better strength in all directions, and makes climbing operation safer. 
     In order to connect the climbing frame  300  with at least two carbon-fiber vertical frames  200  at positions far away from the ends of the carbon-fiber vertical frames, as shown in  FIG. 2 , specifically, the climbing frame  300  includes a frame body  310 , a first connecting part  320  and a second connecting part  330 . The first connecting part  320  is provided with a first connecting hole  321  and a first pin hole  322 . The first pin hole is formed through the inner surface and the outer surface of the first connecting part  320 , and is communicated with the first connecting hole  321 . The second connecting part  330  is formed with a second connecting hole  331  and a second pin hole (not shown). The second pin hole is formed through the inner surface and the outer surface of the second connecting part  330 , and is communicated with the second connecting hole  331 . One end of the frame body  310  is connected to the outer side of the first connecting part  320 , with the other end connected to the outer side of the second connecting part  330 . The first carbon-fiber vertical frame  210  is provided with a third pin hole  202 , and the second carbon-fiber vertical frame  220  is provided with a fourth pin hole (not shown). The first carbon-fiber vertical frame  210  is provided with the first connecting hole  321  that is passed through the first carbon-fiber vertical frame  210 , and the second carbon-fiber vertical frame  220  is provided with a second connecting hole  331  that is passed through the second carbon-fiber vertical frame  220 . A first pin shaft  420  is arranged in the first pin hole  322  and the third pin hole  202 , and a second pin shaft (not shown) is arranged in the second pin hole and the fourth pin hole, so that the climbing frame  300  is respectively connected to the at least two carbon-fiber vertical frames  200  at positions far away from the ends of the carbon-fiber vertical frames  200 . 
     Specifically, the first pin shaft  420  is abutted against the side wall of the first pin hole  322 , the first pin shaft  420  is also abutted against the side wall of the third pin hole  202 . The second pin shaft is abutted against the side wall of the second pin hole, and the second pin shaft is also abutted against the side wall of the fourth pin hole. The first connecting part and the first carbon-fiber vertical frame are fixed through the first pin shaft, and the second connecting part and the second carbon-fiber vertical frame are fixed through the second pin shaft, so that the connection between the climbing frame and the carbon-fiber vertical frame is stable. 
     In order to install the display screen, in one embodiment, as shown in  FIG. 1 , the climbing frame  300  is further provided with a back buckle hole  301  configured for installing the display screen. 
     In order to increase the bearing ability of the installation support, as shown in  FIGS. 1 and 2 , in one embodiment, the two aluminum-alloy horizontal frames  100  at both ends of the carbon-fiber vertical frame  200  are symmetrically arranged. The symmetrically arranged aluminum-alloy horizontal frames  100  have similar stressing conditions, so that the stress is evenly distributed on the two aluminum-alloy horizontal frames  100 , and the installation support  10  can bear higher stress. 
     In order to more conveniently climb the installation support  10 , as shown in  FIGS. 1 and 2 , in one embodiment, each of the aluminum-alloy horizontal frames  100  is respectively provided with a supporting surface  161 , the supporting surface  161  is perpendicular to the axial direction of the carbon-fiber vertical frame  200 . The two supporting surfaces  161  of the two aluminum-alloy horizontal frames  100  face the same direction. In real practice, the supporting surface  161  is arranged in a direction away from the ground, and the axial direction of the carbon-fiber vertical frame is parallel to the gravity direction. A user can climb with the supporting surface  161  as a supporting point. Specifically, the aluminum-alloy horizontal frame  100  further includes a fourth frame  160 , one end of which is connected to the first supporting beam  140 , the other end of which is connected to the second supporting beam  150 . The fourth frame  160  is provided with the supporting surface  161 . 
     In order to realize the connection between the carbon-fiber vertical frame  200  and the aluminum-alloy horizontal frame  100 , as shown in  FIG. 2 , in one embodiment, the installation support  10  further comprises a fixing shaft  410 . The carbon-fiber vertical frame  200  is provided with a first through hole  201 , and the aluminum-alloy horizontal frame  100  is provided with a second through hole  121 . The fixing shaft  410  is penetrated through the first through hole  201  and the second through hole  121 . Specifically, the fixing shaft  410  is abutted against the side wall of the first through hole  201 , and the fixing shaft  410  is also abutted against the side wall of the second through hole  121 . Thus, the carbon-fiber vertical frame  200  and the aluminum-alloy horizontal frame  100  are connected. The surface of the fixing shaft  410  is in contact with the side wall of the first through hole  201  and the side wall of the second through hole  121 , so that the carbon-fiber vertical frame  200  and the aluminum-alloy horizontal frame  100  cannot be separated from each other. 
     The connection between the carbon-fiber vertical frame  200  and the aluminum-alloy horizontal frame  100  becomes more compact. 
     Specifically, the second through hole is penetrated through the inner side surface and the outer side surface of the aluminum-alloy, and the second through hole is communicated with the installation groove. The carbon-fiber vertical frame is inserted into the installation groove. And the fixing shaft is penetrated through the first through hole and the second through hole, to enable the connection between the carbon-fiber vertical frame and the aluminum-alloy horizontal frame. In the present embodiment, the second through hole  121  is communicated with the first installation groove  103 . 
     In one embodiment, the fixed shaft, the first pin shaft and the second pin shaft are all made of stainless steel. That is, the fixed shaft is a stainless steel fixed shaft, the first pin shaft is a first stainless steel pin shaft, and the second pin shaft is a second stainless steel pin shaft. Rusting is prevented of the fixed shaft, the first pin shaft and the second pin shaft and further the joint of the installation support becomes more stable. 
     In one of the embodiments, it is further proposed a display device including a display screen and the installation support described in any of the above embodiments. The display screen is connected to the aluminum-alloy horizontal frame. 
     In one embodiment, one end of the display screen is connected to one of the aluminum-alloy horizontal frames at the length direction of the display screen, while the other end of the display screen is connected to another one of the aluminum-alloy horizontal frames. With respect to the width direction of the display screen, the distance between the two aluminum-alloy horizontal frames is larger than the width of the display screen. So that the display screen can be conveniently disassembled and passed through the installation support, providing convenience to the back maintenance. 
     In one embodiment, the distance between the climbing frame and one aluminum-alloy horizontal frame is larger than the width of the display screen, so that the display screen can pass between the climbing frame and the aluminum-alloy horizontal frame, and the climbing frame can conveniently be climbed for the support installation. Back maintenance can also be performed conveniently on the display screen. 
     In order to facilitate the connection between the two frame bodies  310 ,  FIGS. 3 and 4  are referred to. In one embodiment of the installation support  10 , one end of the aluminum-alloy horizontal frame  100  away from the carbon-fiber vertical frame  200  is provided with a positioning shaft  700 , while the other end of the aluminum-alloy horizontal frame  100  away from the carbon-fiber vertical frame  200  is provided with positioning opening  701 . At least two mounting frames  10  are provided, and the positioning shaft  700  of one of the installation support  10  is inserted into the positioning opening  701  of the other installation support  10 . The positioning shaft  700  is inserted into the positioning opening, so that the two installation supports  10  are positioned with each other. As such, the connection is more convenient between the aluminum-alloy horizontal frames  100  of the two installation supports  10 . In one embodiment, at least two positioning shafts and two positioning openings are provided, respectively. The positioning shafts and the positioning openings are arranged in one-to-one correspondence, so that the two installation supports are better positioned through a plurality of positioning shafts. Relative rotation of the two installation supports is avoided. In one embodiment, the positioning opening is a positioning groove, and the positioning shaft is accommodated in the positioning groove. Specifically, the side wall of the positioning groove is abutted against the positioning shaft, so that the positioning between the two installation supports is more accurate. 
     As shown in  FIG. 3 , in one embodiment, one end of the aluminum-alloy horizontal frame  100  of each of the installation supports  10  away from the carbon-fiber vertical frame  200  is provided with a lifting lock cylinder  710 , and the other end of the aluminum-alloy horizontal frame  100  away from the carbon-fiber vertical frame  200  is provided with a lifting lock cylinder  720 . When the two installation supports  10  are connected in the first direction, the lock cylinder of one of the installation supports  10  is connected to the lock cylinder of the other installation support  10 , thereby connecting the a plurality of installation supports  10  in the first direction. 
     As shown in  FIG. 3 , in one embodiment, one side of the aluminum-alloy horizontal frame  100  of each of the installation supports  10  is provided with an arc buckling rod  510 , and the other side of the aluminum-alloy horizontal frame  100  of each of the installation supports  10  is provided with an arc buckling piece  520 . When two installation supports  10  are connected in the second direction, the arc buckling rod  510  of one of the installation supports  10  is connected to the arc buckling piece  520  of the other installation support  10 , thereby connecting the plurality of installation supports  10  in the second direction. In the present embodiment, the first direction and the second direction are perpendicular to each other. 
     As shown in  FIG. 3 , in one embodiment, the installation support  10  is further provided with a display screen fixing lock  600  for connection with the display screen. 
     The technical features of the aforementioned embodiments can be combined at will. In order to simplify the description, not all possible combinations of the technical features of the aforementioned embodiments have been described. However, as long as no contradiction exists between in the combination of these technical features, they should be considered as the scope recorded in the present disclosure. 
     The aforementioned examples describe several optional embodiments of the present disclosure with specific details, but they should not be construed as a limitation to the scope of present disclosure. It should be appreciated that for those skilled in the art, possible modifications and improvements can be made without departing from the concept of the present disclosure, which should be considered as falling within the protection scope of the present disclosure. Therefore, the scope of protection of the present disclosure patent shall be subject to the appended claims.