Modular assembled LCD (Liquid Crystal Display) screen for rail transit

Abstract

The utility model relates to the technical field of LCD (Liquid Crystal Display) screens, and discloses a modular assembled LCD screen for rail transit, which comprises a placing frame, a support frame fixedly arranged on the bottom surface of the placing frame, a sun shield fixedly arranged on the top surface of the placing frame, an assembling mechanism arranged inside the placing frame, and a fixing mechanism arranged on the back surface of the placing frame, positioning grooves are formed in the upper end and the lower end of the interior of the placing frame, fixing grooves are formed in the left end and the right end of the interior of the placing frame, the splicing mechanism comprises a splicing part and a placing part, the fixing mechanism comprises an adjusting part and a fixing part, the two ends of the LCD screen slide into the placing frame along the limiting grooves, and on the contrary, the LCD screen can be taken down, and workers can conveniently mount and dismount the LCD screen; when a certain LCD display screen is damaged, all the LCD display screens do not need to be taken down, maintenance is easy and convenient, meanwhile, the heat dissipation grooves are formed in the back face of the placing frame, heat dissipation is conducted on the working LCD display screens through the heat dissipation grooves, and it is guaranteed that the peripheries of the LCD display screens are ventilated smoothly when the LCD display screens work.

Description

Technical Field

[0001] The utility model relates to the technical field of LCD display screens, in particular to a modular assembled LCD display screen for rail transit. Background Technique

[0002] A liquid crystal display, abbreviated as "LCD", is a flat panel display device that uses liquid crystal materials to change optical properties under the action of an electric field to achieve image display. Liquid crystal displays can be divided into three categories: twisted nematic, super twisted nematic, and color thin film type. Liquid crystal displays have the advantages of pure flat display, low power consumption, and no radiation, and are widely used in the display fields of electronic devices such as computers, televisions, and oscilloscopes;

[0003] When using an LCD display screen in rail transit work, since it is necessary to warn the surroundings through the LCD display screen, a large-screen LCD display screen needs to be used. Usually, multiple LCD display screens are assembled and used. At present, most of them place multiple LCD display screens on a placement rack. If a certain LCD display screen is damaged, the entire placement rack needs to be disassembled for maintenance, which is time-consuming and laborious.

[0004] Therefore, a modular assembled LCD display screen for rail transit is proposed. Content of the Utility Model

[0005] The purpose of the utility model is to provide a modular assembled LCD display screen for rail transit to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A modular assembled LCD display screen for rail transit, including a placement rack, a support frame is fixedly arranged on the bottom surface of the placement rack, a sunshade is fixedly arranged on the top surface of the placement rack, an assembling mechanism is arranged inside the placement rack, and a fixing mechanism is arranged on the back surface of the placement rack;

[0007] Positioning grooves are opened at the upper and lower ends inside the placement rack, and fixing grooves are opened at the left and right ends inside the placement rack;

[0008] The assembling mechanism includes a splicing part and a placement part;

[0009] The fixing mechanism includes an adjusting part and a fixing part.

[0010] Preferably, the splicing part includes a cross, the cross is located inside the placement rack, positioning blocks are fixedly arranged at both the upper and lower ends of the cross, and the upper and lower positioning blocks are respectively located inside the adjacent positioning grooves. Fixing blocks are fixedly arranged on both the left and right sides of the cross, and the left and right fixing blocks are respectively located inside the adjacent fixing grooves. The positioning blocks and the fixing blocks complete the positioning of the cross.

[0011] Preferably, connecting rods are fixedly arranged on both sides of the cross, and two connecting rods are arranged up and down on the same side. A placing rack is arranged behind the cross, and the connecting rods penetrate through the lower end of the placing rack and are rotatably connected with the placing rack.

[0012] Preferably, a placing groove is formed on the front surface of the placing rack, limiting grooves are formed at both ends of the placing groove, and the limiting grooves communicate with the placing groove. A heat dissipation groove is formed on the back surface of the placing rack, and the heat dissipation groove communicates with the placing groove. Connecting grooves are formed on the adjacent surfaces of two adjacent placing racks, and the heat dissipation groove ensures smooth air circulation inside.

[0013] Preferably, the placing part includes fixing plates. There are four fixing plates. The adjacent side surfaces of the upper and lower fixing plates are fixedly connected with fixing blocks. A hydraulic strut is hingedly arranged on the side surface of the fixing plate, and the other end of the hydraulic strut is connected with the adjacent placing rack. An LCD display screen is arranged in the placing groove, and both ends of the LCD display screen are slidably connected with the inner wall of the limiting groove.

[0014] Preferably, the adjusting part includes a connecting frame. The connecting frame is located behind the placing rack. A connecting block is fixedly arranged on the top surface of the connecting frame, and the connecting block is hinged with the back surface of the placing rack. A limiting block is fixedly arranged on the front surface of the connecting frame. There are two limiting blocks on the left and right. The two limiting blocks on the left and right are located inside the adjacent fixing grooves, and the connecting block positions the upper end of the connecting frame.

[0015] Preferably, the fixing part includes positioning plates. There are two positioning plates on the left and right. The top surfaces of the two positioning plates on the left and right are fixedly connected with the connecting frame. The front surface of the positioning plate is an inclined surface. A fixing frame is arranged between the two positioning plates on the left and right. The front surface of the fixing frame is fixedly connected with the placing rack. An adjusting groove is formed at the lower end of the fixing frame. A fixing rod is fixedly arranged in the adjusting groove. An adjusting rod is sleeved on the outer side surface of the fixing rod. The far ends of the two adjusting rods on the left and right penetrate through the adjusting groove and extend to the outside of the adjusting groove.

[0016] Preferably, a clamping hole is formed on the side surface of the positioning plate, and the adjusting rod is adapted to the clamping hole. A connecting spring is sleeved on the outer side surface of the fixing rod, and both ends of the connecting spring are fixedly connected with the adjusting rod and the inner wall of the adjusting groove respectively. The connecting spring drives the adjusting rod to return to its original position.

[0017] Compared with the prior art, the beneficial effects of the present utility model are: the modular assembled LCD display screen for rail transit

[0018] 1), Slide it into the placement rack along the limit slots at both ends of the LCD display screen. Conversely, the LCD display screen can be removed, which is convenient for the staff to install and disassemble the LCD display screen. When a certain LCD display screen is damaged, it is not necessary to remove all the LCD display screens, and the maintenance is simple and convenient. At the same time, there are heat dissipation slots on the back of the placement rack, and the heat dissipation slots dissipate heat from the working LCD display screen to ensure smooth ventilation around the LCD display screen during operation.

[0019] 2), The limit block is located in the fixed slot, and the limit block abuts against the fixed block in the fixed slot, thereby fixing the cross, improving the firmness of the cross inside the placement rack, and making the adjusting rod engage with the clamping holes on the positioning plate to complete the fixation of the positioning plate and the connecting frame. Brief Description of the Drawings

[0020] Figure 1 It is a three-dimensional schematic diagram of the structure of the present utility model;

[0021] Figure 2 It is a three-dimensional view of the placement rack, support frame and sunshade of the present utility model;

[0022] Figure 3 It is an exploded view of the assembly mechanism of the present utility model;

[0023] Figure 4 It is a three-dimensional view of the cross of the present utility model;

[0024] Figure 5 It is a three-dimensional view of the fixing mechanism of the present utility model;

[0025] Figure 6 It is an exploded view of the positioning plate and the fixing frame of the present utility model.

[0026] In the figure: 1 placement rack, 2 support frame, 3 sunshade, 4 assembly mechanism, 41 cross, 42 positioning block, 43 fixed block, 44 connecting rod, 45 placement rack, 46 fixing plate, 47 hydraulic strut, 48 LCD display screen, 5 fixing mechanism, 51 connecting frame, 52 connecting block, 53 limit block, 54 positioning plate, 55 fixing frame, 56 fixing rod, 57 adjusting rod, 58 connecting spring. Detailed Embodiment

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment 1

[0029] Please refer to Figures 1 - 6 , the present utility model provides a technical solution: a modular assembled LCD display screen for rail transit, including a placement rack 1, a support frame 2 is fixedly arranged on the bottom surface of the placement rack 1, a sunshade 3 is fixedly arranged on the top surface of the placement rack 1, an assembling mechanism 4 is arranged inside the placement rack 1, and a fixing mechanism 5 is arranged on the back surface of the placement rack 1;

[0030] Positioning grooves are opened at the upper and lower ends inside the placement rack 1, and fixing grooves are opened at the left and right ends inside the placement rack 1;

[0031] The assembling mechanism 4 includes a splicing part and a placement part;

[0032] The fixing mechanism 5 includes an adjusting part and a fixing part.

[0033] The splicing part includes a cross 41, the cross 41 is located inside the placement rack 1, positioning blocks 42 are fixedly arranged at both the upper and lower ends of the cross 41, the upper and lower two positioning blocks 42 are respectively located inside the adjacent positioning grooves, fixing blocks 43 are fixedly arranged on both the left and right sides of the cross 41, and the left and right two fixing blocks 43 are respectively located inside the adjacent fixing grooves;

[0034] Connecting rods 44 are fixedly arranged on both sides of the cross 41, two connecting rods 44 on the same side are arranged up and down, a placement rack 45 is arranged behind the cross 41, and the connecting rods 44 penetrate through the lower end of the placement rack 45 and are rotatably connected with the placement rack 45;

[0035] A placement groove is opened on the front surface of the placement rack 45, limiting grooves are opened at both ends of the placement groove, the limiting grooves communicate with the placement groove, a heat dissipation groove is opened on the back surface of the placement rack 45, the heat dissipation groove communicates with the placement groove, and connecting grooves are opened on the adjacent surfaces of two adjacent placement racks 45;

[0036] The placement part includes fixing plates 46, there are four fixing plates 46, the adjacent side surfaces of the upper and lower two fixing plates 46 are fixedly connected with the fixing blocks 43, a hydraulic strut 47 is hingedly arranged on the side surface of the fixing plate 46, the other end of the hydraulic strut 47 is connected with the adjacent placement rack 45, an LCD display screen 48 is arranged in the placement groove, and both ends of the LCD display screen 48 are slidably connected with the inner wall of the limiting groove;

[0037] Furthermore, in this embodiment, the cross 41 is placed inside the placement rack 1, the positioning blocks 42 are located in the positioning grooves, the fixing blocks 43 are located in the fixing grooves, the placement rack 45 is pulled, the connecting rods 44 position the lower end of the placement rack 45, so that the placement rack 45 deflects. When the placement rack 45 is perpendicular to the cross 41, the hydraulic strut 47 fixes the placement rack 45, and both ends of the LCD display screen 48 are slid into the placement rack 45 along the limiting grooves. On the contrary, the LCD display screen 48 can be removed;

[0038] Further, in this embodiment, the two ends of the LCD display screen 48 are slid into the placement rack 45 along the limiting grooves. Conversely, the LCD display screen 48 can be removed, which facilitates the installation and disassembly of the LCD display screen 48 by the staff. When a certain LCD display screen 48 is damaged, it is not necessary to remove all the LCD display screens 48, and the maintenance is simple and convenient. At the same time, heat dissipation grooves are provided on the back of the placement rack 45, and the heat dissipation grooves dissipate heat from the working LCD display screen 48 to ensure smooth ventilation around the LCD display screen 48 during operation;

[0039] Embodiment 2

[0040] Please refer to Figures 1 - 6 , and on the basis of Embodiment 1, it is further obtained that the adjusting part includes a connecting frame 51. The connecting frame 51 is located behind the placement rack 1. A connecting block 52 is fixedly arranged on the top surface of the connecting frame 51. The connecting block 52 is hinged to the back surface of the placement rack 1. A limiting block 53 is fixedly arranged on the front surface of the connecting frame 51. There are two limiting blocks 53 arranged left and right, and the left and right two limiting blocks 53 are located inside the adjacent fixing grooves;

[0041] The fixing part includes a positioning plate 54. There are two positioning plates 54 arranged left and right. The top surfaces of the left and right two positioning plates 54 are fixedly connected to the connecting frame 51. The front surface of the positioning plate 54 is an inclined surface. A fixing frame 55 is arranged between the left and right two positioning plates 54. The front surface of the fixing frame 55 is fixedly connected to the placement rack 1. An adjusting groove is opened at the lower end of the fixing frame 55. A fixing rod 56 is fixedly arranged in the adjusting groove. An adjusting rod 57 is sleeved on the outer side surface of the fixing rod 56. The far ends of the left and right two adjusting rods 57 penetrate through the adjusting groove and extend to the outside of the adjusting groove;

[0042] A clamping hole is opened on the side surface of the positioning plate 54. The adjusting rod 57 is adapted to the clamping hole. A connecting spring 58 is sleeved on the outer side surface of the fixing rod 56. The two ends of the connecting spring 58 are respectively fixedly connected to the adjusting rod 57 and the inner wall of the adjusting groove;

[0043] Further, in this embodiment, the connecting frame 51 is moved, and the connecting block 52 positions the upper end of the connecting block 52. When the connecting frame 51 moves, the front end of the positioning plate 54 presses the adjusting rod 57 to move the adjusting rod 57 inward. When the connecting frame 51 contacts the placement rack 1, under the action of the connecting spring 58, the connecting spring 58 drives the adjusting rod 57 to return to its original position, so that the adjusting rod 57 is clamped with the clamping hole on the positioning plate 54, and the positioning plate 54 and the connecting frame 51 are fixed;

[0044] Further, in this embodiment, the limiting block 53 is located in the fixing groove, and the limiting block 53 abuts against the fixing block 43 in the fixing groove, thereby fixing the cross 41, improving the firmness of the cross 41 inside the placement rack 1, and making the adjusting rod 57 clamped with the clamping hole on the positioning plate 54 to complete the fixing of the positioning plate 54 and the connecting frame 51.

[0045] In use, place the cross 41 inside the placement rack 1. The positioning block 42 is located in the positioning groove, and the fixing block 43 is located in the fixing groove. Pull the placement rack 45, and the connecting rod 44 positions the lower end of the placement rack 45, causing the placement rack 45 to deflect. When the placement rack 45 is perpendicular to the cross 41, the hydraulic strut 47 fixes the placement rack 45. Slide both ends of the LCD display screen 48 along the limiting groove into the placement rack 45. Conversely, the LCD display screen 48 can be removed, facilitating the installation and removal of the LCD display screen 48 by the staff. When a certain LCD display screen 48 is damaged, it is not necessary to remove all the LCD display screens 48, and the maintenance is simple and convenient. Move the movable connecting rack 51, and the connecting block 52 positions the upper end of the connecting block 52. When the connecting rack 51 contacts the back of the placement rack 1, the limiting block 53 is located in the fixing groove, and the limiting block 53 abuts against the fixing block 43 in the fixing groove, thereby fixing the cross 41 and improving the firmness of the cross 41 inside the placement rack 1. When the connecting rack 51 moves, the front end of the positioning plate 54 presses the adjusting rod 57, causing the adjusting rod 57 to move inward. When the connecting rack 51 contacts the placement rack 1, under the action of the connecting spring 58, the connecting spring 58 drives the adjusting rod 57 to return to its original position, enabling the adjusting rod 57 to be engaged with the engaging hole on the positioning plate 54, completing the fixation of the positioning plate 54 and the connecting rack 51.

[0046] 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 the 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 modular assembled LCD display screen for rail transit, comprising a placement rack (1), characterized in that: A support frame (2) is fixedly arranged on the bottom surface of the placement rack (1), a sunshade (3) is fixedly arranged on the top surface of the placement rack (1), an assembly mechanism (4) is arranged inside the placement rack (1), and a fixing mechanism (5) is arranged on the back surface of the placement rack (1); Positioning grooves are formed at the upper and lower ends inside the placement rack (1), and fixing grooves are formed at the left and right ends inside the placement rack (1); The assembly mechanism (4) includes a splicing part and a placement part; The fixing mechanism (5) includes an adjusting part and a fixing part.

2. The modular assembled LCD display screen for rail transit according to claim 1, wherein: The splicing part includes a cross (41), the cross (41) is located inside the placement rack (1), positioning blocks (42) are fixedly arranged at both the upper and lower ends of the cross (41), and the two positioning blocks (42) above and below are respectively located inside the adjacent positioning grooves, and fixing blocks (43) are fixedly arranged on both the left and right sides of the cross (41), and the two fixing blocks (43) on the left and right are respectively located inside the adjacent fixing grooves.

3. The modular assembled LCD display screen for rail transit according to claim 2, wherein: Connecting rods (44) are fixedly arranged on both sides of the cross (41), and two connecting rods (44) are arranged up and down on the same side. A placement rack (45) is arranged behind the cross (41), and the connecting rods (44) penetrate through the lower end of the placement rack (45) and are rotatably connected to the placement rack (45).

4. The modular assembled LCD display screen for rail transit according to claim 3, wherein: A placement groove is formed on the front surface of the placement rack (45), limiting grooves are formed at both ends of the placement groove, and the limiting grooves communicate with the placement groove. A heat dissipation groove is formed on the back surface of the placement rack (45), and the heat dissipation groove communicates with the placement groove. Connecting grooves are formed on the adjacent surfaces of two adjacent placement racks (45).

5. A modular assembled LCD display screen for rail transit according to claim 1, characterized in that: The placement part includes fixing plates (46), and there are four fixing plates (46). The adjacent side surfaces of the upper and lower fixing plates (46) are fixedly connected to the fixing blocks (43). Hydraulic struts (47) are hingedly arranged on the side surfaces of the fixing plates (46), and the other ends of the hydraulic struts (47) are connected to the adjacent placement rack (45). An LCD display screen (48) is arranged in the placement groove, and both ends of the LCD display screen (48) are slidably connected to the inner walls of the limiting grooves.

6. The modular assembled LCD display screen for rail transit according to claim 1, wherein: The adjusting part includes a connecting frame (51), the connecting frame (51) is located behind the placement rack (1), a connecting block (52) is fixedly arranged on the top surface of the connecting frame (51), the connecting block (52) is hingedly connected to the back surface of the placement rack (1), a limiting block (53) is fixedly arranged on the front surface of the connecting frame (51), and there are two limiting blocks (53) arranged left and right, and the two limiting blocks (53) on the left and right are located inside the adjacent fixing grooves.

7. A modular assembled LCD display screen for rail transit according to claim 1, characterized in that: The fixed part includes positioning plates (54), and there are two positioning plates (54) arranged left and right. The top surfaces of the two positioning plates (54) on the left and right are fixedly connected to the connecting frame (51). The front surface of the positioning plate (54) is an inclined surface. A fixing frame (55) is arranged between the two positioning plates (54) on the left and right. The front surface of the fixing frame (55) is fixedly connected to the placing frame (1). An adjustment groove is formed at the lower end of the fixing frame (55), and a fixing rod (56) is fixedly arranged in the adjustment groove. An adjustment rod (57) is sleeved on the outer side surface of the fixing rod (56). The far ends of the two adjustment rods (57) on the left and right penetrate through the adjustment groove and extend to the outside of the adjustment groove.

8. A modular assembled LCD display screen for rail transit according to claim 7, characterized in that: A clamping hole is formed in the side surface of the positioning plate (54), and the adjustment rod (57) is adapted to the clamping hole. A connecting spring (58) is sleeved on the outer side surface of the fixing rod (56). The two ends of the connecting spring (58) are respectively fixedly connected to the adjustment rod (57) and the inner wall of the adjustment groove.

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