Patent Publication Number: US-2022230565-A1

Title: Led floor tile screen

Description:
This application claims the priority of the Chinese patent application filed with China Patent Office on Dec. 13, 2019, with the application number of 201911284357.6 and the title of “LED FLOOR TILE SCREEN”, the entire contents of which are incorporated herein by reference in their entirety. 
     TECHNICAL FIELD 
     The application belongs to the technical field of display screens, and particularly relates to an LED floor tile screen. 
     BACKGROUND 
     LED floor tile screens have the advantages of flexible installation, good load-bearing performance, easy maintenance, high contrast, uniform gray scale and good consistency. They are widely used in places or occasions such as stage, catwalk, exhibition stand, bar, night entertainment venue, broadcast hall, conference room and multimedia classroom. 
     The LED floor tile screen is a display screen laid on the floor, which can display the expected images more clearly and accurately. At present, the LED floor tile screen in the market is formed by covering the acrylic transparent panel on a regular LED module (composed of rear body, front body and LED lamp panel). At first, a fixing screw hole is reserved on the LED module, then an acrylic transparent panel is covered on the top surface of the LED module, and finally, the acrylic transparent panel is fixed on the LED module by screws. However, the inventor found that the existing LED floor tile screen still has the following shortcomings: a. The transparency of acrylic transparent panel is poor, and it is likely to change color under strong sunlight, which affects the display effect; b. The screws on the transparent acrylic panel are conspicuous, and when using the floor tile screen, the parts with screws or bolts would block the light, which would be shown as black spots without images on the floor tile screen, and thus seriously affecting the display effect of the floor tile screen; c. Because the screws are designed in the center of four lamps, the small distance between the lamps would inevitably require small screws, which leads to insufficient screw strength and a tendency to slide. 
     Technical Problems 
     The application provides an LED floor tile screen, and aims to solve the technical problem that the acrylic transparent panel of the existing LED floor tile screen is poor in transparency and likely to change color under strong sunlight, which affects the display effect. 
     Technical Solutions 
     The application adopts the following technical solution to solve the above technical problems: an LED floor tile screen is provided, including a rear body and an LED lamp panel fixedly arranged on the rear body; the LED lamp panel includes a PCB board and a plurality of lamp beads fixedly arranged on the PCB board; wherein the LED floor tile screen further includes a glass covering the LED lamp panel and an adhesive layer for bonding and sealing the glass and the rear body; 
     the rear body includes a bottom housing and a plurality of supports fixedly arranged in the bottom housing; and the support is used to support the glass; and 
     the LED lamp panel is fixedly arranged in the bottom housing; a top surface of the support is higher than a top surface of the lamp bead. 
     In the above LED floor tile screen of the present application, the PCB board is provided with a first through hole, the first through hole avoids the lamp bead; and the support passes through the first through hole and abuts against the glass. 
     In the above LED floor tile screen of the present application, the support is a transparent support. 
     In the above LED floor tile screen of the present application, the adhesive layer is a transparent adhesive layer. 
     In the above LED floor tile screen of the present application, transparent side plates are arranged around the bottom housing. 
     In the above LED floor tile screen of the present application, the adhesive layer is filled between the side plate and the glass. 
     In the above LED floor tile screen of the present application, a side of the glass is provided with a first groove. 
     In the above LED floor tile screen of the present application, an upper end of an inner wall of the side plate is provided with a second groove. 
     In the above LED floor tile screen of the present application, the second groove is set as a zigzag groove. 
     In the above LED floor tile screen of the present application, the side plate includes a first segment close to the glass and a second segment fixed on a bottom surface of the first segment, the wall thickness of the first segment is smaller than that of the second segment, and an outer surface of the first segment is flat with that of the second segment; the LED lamp panel abuts against a top surface of the second segment. 
     In the above LED floor tile screen of the present application, one end of the support close to the glass is provided with a first post, and the first post  111  passes through the first through hole and abuts against the glass; one end of the support away from the glass is provided with a second post, and the LED lamp panel abuts against a top surface of the second post. 
     In the above LED floor tile screen of the present application, further including a black adhesive layer between the glass and the LED lamp panel, wherein the black adhesive layer completely covers the PCB board, and a top surface of the black adhesive layer is lower than the top surface of the lamp bead. 
     In the above LED floor tile screen of the present application, the LED lamp panel further includes a sensing chip fixedly arranged on the PCB board; and the sensing chip is used for sensing human behavior information on the LED floor tile screen, and the PCB board controls the display of the lamp bead according to information fed back by the sensing chip. 
     In the above LED floor tile screen of the present application, the rear body further includes a positioning post fixedly arranged on the bottom housing, and a positioning hole is arranged on the PCB board, and the positioning post is inserted into the positioning hole. 
     Beneficial Effects 
     The LED floor tile screen provided by the application has the following beneficial effects: compared with the prior art, the support of the LED floor tile screen in the application supports the glass, which can transmit the pressure on the glass to the rear body, thereby preventing the glass from crushing the lamp bead, protecting the lamp bead, omitting the front body structure normally used in the prior art, saving the cost and further improving the display clarity of the LED floor tile screen. At the same time, glass is used instead of acrylic transparent panel, which can avoid discoloration under sunlight, improve transparency and clarity, and make the display effect better. The support and adhesive layer are adopted, instead of using screws to fix the glass. In this way, the connection is simpler and firmer, thus avoiding the influence of insufficient strength or sliding caused by the small size of screws. Meanwhile, it plays a waterproof role and avoids damaging the electrical components in the LED floor tile screen. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  is a structural schematic diagram of an LED floor tile screen provided by an embodiment of the application; 
         FIG. 2  is a sectional view taken along A-A of  FIG. 1 ; 
         FIG. 3  is an enlarged view of B in  FIG. 1 ; 
         FIG. 4  is an enlarged view of C in  FIG. 2 . 
     
    
    
     Reference signs in the description are as follows:
           1 . Rear body;  11 . Support;  111 . First post;  112 . Second post;     12 . Side plate;  121 . First segment;  122 . Second segment;     13 . Second groove;  14 . Positioning post;     2 . LED lamp panel;  21 . PCB board;  22 . Lamp bead;  23 . First through hole;     3 . Adhesive layer;     4 . Glass;  41 . First groove.       

     DETAILED DESCRIPTION OF DISCLOSED EMBODIMENTS 
     In order to make the technical problems, technical solutions and beneficial effects of this application clearer, the application will be further described in detail with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to illustrate the application, rather than limiting it. 
     As shown in  FIG. 1  to  FIG. 4 , an LED floor tile screen provided by an embodiment of the present application, including a rear body  1  and an LED lamp panel  2  fixedly arranged on the rear body  1 ; the LED lamp panel  2  includes a PCB board  21  and a plurality of lamp beads  22  fixedly arranged on the PCB board  21 ; wherein the LED floor tile screen further includes a glass  4  covering the LED lamp panel  2  and an adhesive layer  3  for bonding and sealing the glass  4  and the rear body  1 . 
     The rear body  1  includes a bottom housing and a plurality of supports  11  fixedly arranged in the bottom housing; the support  11  is used to support the glass  4 . 
     The LED lamp panel  2  is fixedly arranged in the bottom housing; a top surface of the support  11  is higher than a top surface of the lamp bead  22 . 
     The LED lamp panel  2  is first installed in the rear body  1 , and the support  11  passes through the first through hole  23 . Then cover the glass  4  on the support  11 , and finally pour glue into the gap between the glass  4  and the side plate  12 , and the glue would form an adhesive layer between the glass  4  and the side plate  12 . Compared with the prior art, the LED floor tile screen provided by the application has the following benefits: the support  11  of the LED floor tile screen in the application supports the glass  4 , which can transmit the pressure on the glass  4  to the rear body  1 , thereby preventing the glass  4  from crushing the lamp bead  22 , protecting the lamp bead  22 , omitting the front body structure normally used in the prior art, saving the cost and further improving the display clarity of the LED floor tile screen. At the same time, the glass  4  is used instead of acrylic transparent panel, which can avoid discoloration under sunlight, improve transparency and clarity, and make the display effect better. The support  11  and adhesive layer  3  are adopted, instead of using screws to fix the glass. In this way, the connection is simpler and firmer, thus avoiding the influence of insufficient strength or sliding caused by the small size of screws. Meanwhile, it plays a waterproof role and avoids damaging the electrical components in the LED floor tile screen. 
     In an embodiment, the glass  4  is tempered glass. Tempered glass has the advantages of high strength, large bearing capacity, non-shattering, higher safety and long service life. 
     In an embodiment, as shown in  FIG. 1  to  FIG. 4 , the PCB board  21  is provided with a first through hole  23  which avoids the lamp bead  22 . The support  11  passes through the first through hole  23  and abuts against the glass  4 . The support  11  has a better supporting effect on glass  4 , and can also play a role of limiting the position of PCB board  21 , which is convenient for processing and installation. 
     In an embodiment, the support  11  is a transparent support. The light emitted by lamp bead  22  will not be blocked, so that the black spots on the LED floor tile screen caused by light blocking can be avoided, and the display clarity is improved and the display effect is better. 
     In an embodiment, the supports  11  are uniformly distributed on the PCB board  21 , the glass  4  is supported more evenly, so as to avoid deformation of the glass  4  caused by excessive local stress, which would crush the lamp bead  22  and affect the display effect of LED floor tile screen. Meanwhile, the PCB board  21  is more stable by the limit of support  11 , thus avoiding the PCB board  21  from moving during glue filling. 
     In an embodiment, the adhesive layer  3  is a transparent adhesive layer. In this way, the display transparency and clarity of LED floor tile screen are improved, and it is also convenient to check the connection stability between glass  4  and rear body  1 . 
     In an embodiment, as shown in  FIG. 4 , transparent side plates  12  are arranged around the bottom housing. In this way, after a multiple LED floor tile screen is assembled, the transparency and clarity of the display are improved, and the light blocking at the joint of the adjacent LED floor tile screen would be avoided. 
     In an embodiment, as shown in  FIG. 4 , an adhesive layer  3  is filled between the side plate  12  and the glass  4 . The adhesive firmness of glass  4  is improved, so that the glass  4  will not come loose or fall off. 
     In an embodiment, as shown in  FIG. 4 , a first groove  41  is provided on the side of the glass  4 . The first groove  41  is filled with adhesive layer  3 , which increases the friction between adhesive layer  3  and glass  4 , improves the tensile strength of the connection of adhesive layer  3 , makes glass  4  more firmly fixed, and prevents glass  4  from sliding or falling. 
     In an embodiment, as shown in  FIG. 3 , the upper end of the inner wall of the side plate  12  is provided with a second groove  13 . The second groove  13  is filled with adhesive layer  3 , which increases the friction between adhesive layer  3  and side plate  12 , improves the tensile strength of the connection of adhesive layer  3 , makes glass  4  more firmly fixed, and prevents glass  4  from sliding or falling. 
     In an embodiment, as shown in  FIGS. 3 and 4 , a first groove  41  is arranged on the side of the glass  4 , and a second groove  13  is arranged on the upper end of the inner wall of the side plate  12 . The first groove  41  and the second groove  13  are filled with adhesive layer  3 , which increases the friction between adhesive layer  3  and glass  4 , and the friction between adhesive layer  3  and side plate  12 , improves the tensile strength of the connection of adhesive layer  3 , makes glass  4  more firmly fixed. 
     In an embodiment, as shown in  FIG. 3 , the second groove  13  is set as a zigzag groove. The tensile strength of the connection of the adhesive layer  3  is obviously improved, and the fixation of glass  4  is firmer. 
     In an embodiment, as shown in  FIG. 1  to  FIG. 4 , the side plate  12  includes a first segment  121  close to glass  4  and a second segment  122  fixed on the bottom surface of the first segment  121 . The wall thickness of the first segment  121  is smaller than that of the second segment  122 , and the outer surface of the first segment  121  is flat with that of the second segment  122 . The LED lamp panel  2  abuts against the top surface of the second segment  122 , which improves the support of rear body  1  to LED lamp panel  2 , makes the placement of LED lamp panel  2  more stable, and avoids the influence of glue penetration on electrical components. 
     In an embodiment, as shown in  FIG. 1  to  FIG. 4 , an end of the support  11  close the glass  4  is provided with a first post  111 , and the first post  111  passes through the first through hole  23 . 
     The end of support  11  away from glass  4  is provided with a second post  112 , and the LED lamp panel  2  abuts against the top surface of second post  112 . In this way, the support strength of rear body  1  to LED lamp panel  2  is improved, the limit of the support  11  to LED lamp panel  2  is strengthened, the stability of connection between LED lamp panel  2  and rear body  1  is improved, and also the glue can be prevented from penetrating through first through hole  23  to affect electrical components. 
     In an embodiment, the cross section of first post  111  is smaller than that of first through hole  23 , and the cross section of second post  112  is larger than that of first through hole  23 . The abutting area between the second post  112  and the LED lamp panel  2  is increased, so as to improve the stability of the support of the second post  112 . 
     In an embodiment, as shown in  FIG. 1  to  FIG. 4 , a black adhesive layer is further included between the glass  4  and the LED lamp panel  2 , and the black adhesive layer completely covers the PCB board  21  and the top surface of the black adhesive layer is lower than the top surface of the lamp bead  22 . In this way, the lamp beam  22  can display a uniform background color, thereby preventing the color on the PCB board  21  from affecting the display effect and improving the uniformity of the display effect. 
     In an embodiment, as shown in  FIG. 1  to  FIG. 4 , the rear body  1  further includes a positioning post  14  fixed on the bottom housing, and a positioning hole is provided on the PCB board  21 , and the positioning post  14  extends into the positioning hole. In this way, it is convenient to install and position the LED lamp panel  2  and the rear body  1 , with simple structure and convenient operation. 
     In an embodiment, as shown in  FIG. 1  to  FIG. 4 , the LED lamp panel  2  further includes a sensing chip fixedly arranged on the PCB board  21 . The sensing chip is used to sense human behavior information on LED floor tile screen, and the PCB board  21  controls the display of lamp bead  22  according to the information fed back by the sensing chip. The PCB board  21  controls the lamp bead  22  to switch to a corresponding display according to the information of people&#39;s actions or coordinates on LED floor tile screen sensed by the sensing chip, so as to realize the intelligent interaction between LED floor tile screen and people, and further improve the display effect of LED floor tile screen. 
     The above are only preferred embodiments of the present application, not intended to limit the application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the application shall be included in the protection scope of this application.