An assembled LED digital tube plastic shell structure and assembly method

Abstract

The present invention belongs to the technical field of LED digital tubes, and discloses an assembled LED digital tube plastic shell structure and an assembly method, including a shell, wherein the interior of the shell is sleeved with a support frame, an LED module and a packaging pad, and the interior of the packaging pad is movably sleeved with a locking assembly, and the upper end of the locking assembly passes through the packaging pad, the LED module and the shell in sequence. The present invention connects the interior of the LED tube with the outside by cooperating with a connecting groove and a locking cover, and cooperates with the natural convection of hot air inside the LED digital tube to achieve internal heat dissipation, and realizes open heat dissipation of the packaged LED digital tube, and the heat dissipation action actively occurs under the internal high temperature state, without the need for special operations, and the active heat dissipation is convenient. At the same time, the condensation after the vaporized ethanol is cooled is utilized to reseal the LED digital tube after stopping the operation and cooling, so as to ensure isolation from the outside and prevent dust from entering, so as to achieve opening only when overheating, and the actual heat dissipation effect is good, and it also has a certain dustproof ability, and the use effect is good.

Description

Technical Field

[0001] The invention belongs to the technical field of LED digital tubes, and in particular relates to an assembled LED digital tube plastic shell structure and an assembly method. Background Art

[0002] LED digital tube is a commonly used display device, widely used in electronic products, instruments, home appliances, billboards and other fields. It is mainly composed of light-emitting diodes (LEDs) and can display information in digital form. The plastic shell structure of the LED digital tube is mainly to carry the LED display module and protect the internal electronic components.

[0003] The LED digital tube plastic shell structure in the prior art usually adopts a glue sealing method to seal the LED module during use. However, although the LED digital tube has good sealing under this method, it also causes other problems, including the inability to quickly repair and replace faulty LED modules, and the inability to effectively dissipate heat under complete sealing. On the one hand, the cost of the LED digital tube is increased, and the maintenance is difficult. It can only be completely replaced, which requires a large economic investment and high investment cost. On the other hand, under sufficient sealing, the internal heat of the LED digital tube cannot be effectively dissipated during high-load operation. Overheating causes the internal structure to melt and even causes the lamp beads to burn, which greatly increases the risk of overheating failure, high comprehensive use cost, great difficulty in maintenance, and short service life. Summary of the invention

[0004] The object of the present invention is to provide an assembled LED digital tube plastic shell structure and an assembly method to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: an assembled LED digital tube plastic shell structure and an assembly method, comprising a shell, wherein a support frame, an LED module and a packaging pad are sleeved inside the shell, a locking component is movably sleeved inside the packaging pad, and the upper end of the locking component passes through the packaging pad, the LED module and the shell in sequence, and an active heat dissipation component is arranged inside the locking component.

[0006] The locking assembly includes a locking column, a limiting plate, a locking cover, an internal cavity, a connecting groove and a side groove. The locking cover is movably nested on the top of the housing and is threadedly sleeved with the locking column. The connecting groove is provided on the outer surface of the locking column and is located above the LED module.

[0007] The active heat dissipation component includes a storage cylinder, a heat exchange frame, a movable plug, a push rod, a sealing ring, and an intermediate block. The heat exchange frame is fixedly connected to the outside of the storage cylinder and is connected to the inside of the storage cylinder. The heat exchange frame is nested in the inner wall of the locking column. The connecting groove is located on the moving path of the sealing ring. Ethanol solution is stored in the storage cylinder and the heat exchange frame. When the ethanol solution absorbs heat and evaporates, it pushes the movable plug and the sealing ring to move upward and opens the connecting groove. The storage cylinder is fixedly sleeved in the internal cavity, the heat exchange frame is fixedly sleeved in the side groove, the movable plug is movably sleeved in the storage cylinder, the push rod is movably sleeved in the end of the storage cylinder, the upper and lower ends of the push rod are respectively fixedly connected to the intermediate block and the movable plug, and the intermediate block is fixedly sleeved in the sealing ring.

[0008] Preferably, a stepped hole is provided at the bottom of the packaging pad, the packaging pad is made of rubber, the support frame is located outside the LED module, the packaging pad is located below the LED module, and an outer groove is provided on the outer surface of the packaging pad.

[0009] Preferably, the limit plate is movably sleeved in the stepped hole and fixedly connected to the bottom of the locking column, the internal cavity is opened inside the locking column, the connecting groove is distributed around the outer surface of the locking column and connected to the internal cavity, the side groove is opened on the outer surface of the locking column and connected to the internal cavity, the side groove is located below the connecting groove, and a through hole is opened on the top of the locking cover.

[0010] Preferably, an elastic ring is fixedly sleeved inside the outer groove, a mounting cavity is opened inside the packaging pad, the mounting cavity is communicated with the stepped hole, and a compression assembly is fixedly sleeved in the mounting cavity.

[0011] Preferably, the compression assembly includes a transverse tube, a compression cylinder, a sleeve rod, a push plate and a spring, one end of the transverse tube is connected to the compression cylinder, and the other end is connected to the elastic ring, the sleeve rod is movably sleeved inside the compression cylinder, the push plate is movably sleeved inside the compression cylinder and fixedly connected to the upper end of the sleeve rod, the spring is fixedly connected in the compression cylinder, and the lower end is fixedly connected to the push plate.

[0012] Preferably, a sealing sleeve is fixed on the outer surface of the push plate, and the sealing sleeve is made of elastic material. The sleeve rod is located above the limit plate, and the compression assembly squeezes the internal compressed air into the elastic ring to expand the elastic ring.

[0013] An assembly method of an assembled LED digital tube plastic shell structure includes the following assembly steps:

[0014] Step 1: Sleeve the support frame inside the housing, and sleeve the LED module in the housing, and keep the LED module sleeved in the support frame, then nest the packaging pad at the bottom of the housing, and keep the pins of the LED module passing through the packaging pad;

[0015] Step 2: Sleeve the locking column of the locking assembly along the bottom of the digital tube plastic shell, so that the locking column is inserted along the stepped hole, so that the locking column passes through the LED module and is placed in the nesting groove opened on the top of the shell, and the locking cover is sleeved in the above-mentioned nesting groove and threadedly sleeved with the locking column to complete the assembly and locking;

[0016] Step 3: As the assembly is locked, the locking column drives the limit plate at the bottom to move in the stepped hole and is pressed in the stepped hole. During the pressing process, the limit plate pushes the sleeve rod in the compression assembly upward, so that the sleeve rod drives the push plate to compress the internal gas. The air in the compression cylinder is further compressed into the elastic ring through the cross tube to complete the inflation expansion. The elastic ring seals the bottom of the shell.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention utilizes the detachable effect of the locking component and cooperates with the internally nested active heat dissipation component. After completing the assembly process of the LED digital tube, the ethanol solution in the active heat dissipation component and the metal thin-wall heat exchange frame are used to fully absorb the heat generated by the operation of the LED module, and realize partial ethanol evaporation when the heat is high. The pressure effect inside the storage cylinder under evaporation is used to push the sealing ring to open the connecting groove, and the connecting groove and the locking cover are used to connect the inside of the LED tube with the outside, and the natural convection of the hot air inside the LED digital tube is used to realize the internal heat dissipation, and the open heat dissipation of the packaged LED digital tube is realized. The heat dissipation action occurs actively under the internal high temperature state without special operation, and the active heat dissipation is convenient. At the same time, the condensation after the vaporized ethanol is cooled is used to reseal the LED digital tube after stopping the operation and cooling, so as to ensure isolation from the outside and prevent dust from entering, so that it can be opened only when overheated. The actual heat dissipation effect is good, and it has a certain dustproof ability and good use effect.

[0019] 2. The present invention utilizes the detachable effect of the locking component, cooperates with the sequential socketing of the support frame, LED module and packaging pad, and utilizes the locking effect of the locking component after socketing to quickly realize the locking action, utilizes the locking component to realize quick assembly and active heat dissipation of the LED digital tube, and facilitates replacement of the LED module under convenient disassembly, realizes convenient maintenance and processing, and comprehensively combines heat dissipation and disassembly effects.

[0020] 3. The present invention reuses the assembly locking effect of the locking component. During assembly and locking, the compression component assembled in the packaging pad is assembled in the stepped hole. By utilizing the extrusion action during the assembly process, the internal gas of the compression component is compressed, thereby squeezing part of the stored gas into the elastic ring sleeved on the outside of the packaging pad, and the elastic ring is inflated. The expanded elastic ring is then utilized to fully squeeze the inner wall of the shell, and the further compression and sealing after assembly are combined with the packaging pad made of rubber to achieve quick assembly while simultaneously increasing the sealing after assembly, thereby avoiding the entry of dust caused by poor sealing, and having a good use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a bottom schematic diagram of the present invention;

[0023] Figure 3 It is a partial cross-sectional view of the present invention;

[0024] Figure 4 It is an exploded schematic diagram of the support frame and LED module of the present invention;

[0025] Figure 5 is a bottom schematic diagram of the packaging pad of the present invention;

[0026] Figure 6 It is an exploded schematic diagram of the locking assembly of the present invention;

[0027] Figure 7 It is a cross-sectional schematic diagram of the locking assembly and the active heat dissipation assembly of the present invention;

[0028] Figure 8 It is an exploded schematic diagram of the active heat dissipation component of the present invention;

[0029] Fig. 9 It is a cross-sectional schematic diagram of the compression assembly of the present invention.

[0030] In the figure: 1. Shell; 2. LED module; 3. Packaging pad; 4. Locking assembly; 41. Locking column; 42. Limiting plate; 43. Locking cover; 44. Internal cavity; 45. Connecting groove; 46. Side groove; 5. Active heat dissipation assembly; 51. Storage cylinder; 52. Heat exchange frame; 53. Movable plug; 54. Push rod; 55. Sealing ring; 56. Middle block; 6. Elastic ring; 7. Compression assembly; 71. Cross tube; 72. Compression cylinder; 73. Sleeve rod; 74. Push plate; 75. Spring; 8. Step hole; 9. Installation cavity; 10. Outer groove; 11. Support frame. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] like Figures 1 to 9 As shown, the embodiment of the present invention provides an assembled LED digital tube plastic shell structure and an assembly method, including a shell 1, the interior of the shell 1 is sleeved with a support frame 11, an LED module 2 and a packaging pad 3, the interior of the packaging pad 3 is movably sleeved with a locking component 4, the upper end of the locking component 4 passes through the packaging pad 3, the LED module 2 and the shell 1 in sequence, and the interior of the locking component 4 is provided with an active heat dissipation component 5.

[0033] The locking assembly 4 includes a locking column 41, a stop plate 42, a locking cover 43, an internal cavity 44, a connecting groove 45 and a side groove 46. The locking cover 43 is movably nested on the top of the housing 1 and is threadedly sleeved with the locking column 41. The connecting groove 45 is provided on the outer surface of the locking column 41 and is located above the LED module 2.

[0034] The active heat dissipation component 5 includes a storage cylinder 51, a heat exchange frame 52, a movable plug 53, a push rod 54, a sealing ring 55, and an intermediate block 56. The heat exchange frame 52 is fixedly connected to the outside of the storage cylinder 51 and is connected to the inside of the storage cylinder 51. The heat exchange frame 52 is nested in the inner wall of the locking column 41. The connecting groove 45 is located on the moving path of the sealing ring 55. Ethanol solution is stored in the storage cylinder 51 and the heat exchange frame 52. When the ethanol solution absorbs heat and evaporates, it pushes the movable plug 53 and the sealing ring 55 to move upward and open the connecting groove 45.

[0035] Embodiment 1: The support frame 11 is sleeved inside the shell 1, and the LED module 2 is sleeved in the shell 1, and the LED module 2 is kept sleeved in the support frame 11, and then the packaging pad 3 is nested in the bottom of the shell 1, and the pins of the LED module 2 are kept passing through the packaging pad 3, and the active heat dissipation component 5 is sleeved in the locking component 4, and then the locking column 41 of the locking component 4 is sleeved along the bottom of the digital tube plastic shell, so that the locking column 41 is inserted along the stepped hole 8, so that the locking column 41 passes through the LED module 2 and is placed in the nesting groove opened at the top of the shell 1, and the locking cover 43 is sleeved in the above-mentioned nesting groove, and is threadedly sleeved with the locking column 41 to complete the assembly and locking, and keep the connecting groove 45 above the LED module; when the assembled LED digital tube is running and generating heat, the active heat dissipation component nested in the locking component 4 Component 5 absorbs the heat in the LED module 2 through the thin-walled metal heat exchange frame 52, so that the heat is absorbed into the ethanol solution filled in the storage tube 51, and part of the ethanol solution evaporates, which increases the internal pressure of the storage tube 51. The movable plug 53 is pushed upward by the pressure, and the push rod 54 and the sealing ring 55 are driven to move upward, so that the sealing ring 55 moves from the connecting groove 45 to the top, and the connecting groove 45 is opened. The hot air in the LED module 2 flows upward along the connecting groove 45, the internal cavity 44 and the locking cover 43 to the low temperature zone according to the hot air flow, and active heat dissipation is completed. When the internal temperature of the LED digital tube decreases, the vaporized ethanol in the storage tube 51 cools down and condenses, the internal pressure is reduced and restored, and the movable plug 53 is reset, so that the sealing ring 55 is reset and the connecting groove 45 is re-sealable, and the sealing and dustproof treatment is completed.

[0036] Firstly, by utilizing the detachable effect of the locking component 4 and cooperating with the internally nested active heat dissipation component 5, after completing the assembly process of the LED digital tube, the ethanol solution in the active heat dissipation component 5 and the metal thin-wall heat exchange frame 52 are utilized to fully absorb the heat generated by the operation of the LED module 2, and part of the ethanol is evaporated when the heat is high, and the pressure effect inside the storage cylinder 51 under evaporation is utilized to push the sealing ring 55 to open the connecting groove 45, and cooperate with the connecting groove 45 and the locking cover 43 to make the inside of the LED tube connected with the outside, and cooperate with the natural convection of the hot air inside the LED digital tube to realize the internal heat dissipation, and realize the open heat dissipation of the packaged LED digital tube, and the heat dissipation action occurs actively under the internal high temperature state, without special operation, and the active heat dissipation is convenient, and at the same time, the condensation after the vaporized ethanol is cooled is utilized to reseal the LED digital tube after stopping the operation and cooling, so as to ensure isolation from the outside and prevent dust from entering, so as to realize opening only when overheating, and the actual heat dissipation effect is good, and it also has a certain dustproof ability, and the use effect is good.

[0037] In addition, by utilizing the detachable effect of the locking component 4, cooperating with the support frame 11, the LED module 2 and the packaging pad 3 which are socketed in sequence, and utilizing the locking effect of the locking component 4 after socketing, the locking action is quickly realized, and the locking component 4 is utilized to realize quick assembly and active heat dissipation of the LED digital tube, and the LED module 2 can be easily replaced under convenient disassembly, thereby realizing convenient maintenance processing, and comprehensively achieving both heat dissipation and disassembly and assembly effects.

[0038] Embodiment 2: As the assembly is locked, the locking column 41 drives the limit plate 42 at the bottom to move in the stepped hole 8 and is pressed in the stepped hole 8. During the pressing process, the limit plate 42 pushes the sleeve rod 73 in the compression assembly 7 upward, so that the sleeve rod 73 drives the push plate 74 to compress the internal gas. The air in the compression cylinder 72 is further compressed into the elastic ring 6 through the cross tube 71, completing the inflation expansion. The elastic ring 6 seals the bottom of the shell 1.

[0039] Firstly, by utilizing the assembly locking effect of the locking component 4 again, during assembly and locking, the compression component 7 assembled in the packaging pad 3 is compressed in the stepped hole 8 by utilizing the extrusion action during the assembly process, thereby compressing the gas inside the compression component 7, thereby squeezing part of the stored gas into the elastic ring 6 sleeved on the outside of the packaging pad 3, and realizing the inflation of the elastic ring 6, so as to utilize the expanded elastic ring 6 to fully squeeze the inner wall of the shell 1, and further compress and seal after assembly, and cooperate with the packaging pad 3 made of rubber, so as to realize quick assembly and simultaneously increase the sealing after assembly, avoid the entry of dust caused by poor sealing, and have a good use effect.

[0040] The bottom of the packaging pad 3 is provided with a stepped hole 8 , the packaging pad 3 is made of rubber, the support frame 11 is located outside the LED module 2 , the packaging pad 3 is located below the LED module 2 , and the outer surface of the packaging pad 3 is provided with an outer groove 10 .

[0041] The LED module 2 is supported and packaged by utilizing the packaging pad 3 , and the outer groove 10 is used for mounting and sleeve connection of the elastic ring 6 .

[0042] Among them, the limit plate 42 is movably sleeved in the stepped hole 8 and fixedly connected to the bottom of the locking column 41, the internal cavity 44 is opened inside the locking column 41, the connecting groove 45 is distributed around the outer surface of the locking column 41 and is connected to the internal cavity 44, the side groove 46 is opened on the outer surface of the locking column 41 and is connected to the internal cavity 44, the side groove 46 is located below the connecting groove 45, and a through hole is opened on the top of the locking cover 43, the storage cylinder 51 is fixedly sleeved in the internal cavity 44, the heat exchange frame 52 is fixedly sleeved in the side groove 46, the movable plug 53 is movably sleeved in the storage cylinder 51, and the push rod 54 is movably sleeved at the end of the storage cylinder 51, and the upper and lower ends of the push rod 54 are respectively fixedly connected to the middle block 56 and the movable plug 53, and the middle block 56 is fixedly sleeved in the sealing ring 55.

[0043] By utilizing the sleeve connection of the stepped hole 8 and the limiting plate 42, a limiting snap connection is achieved, thereby clamping and locking the packaging pad 3 and the LED module 2 from the bottom to complete the assembly. The connecting groove 45 is located at the top of the LED module 2, which is convenient for directly discharging the hot air when opening. The side groove 46 adapts to the nesting of the heat exchange frame 52, increases the heat absorption area of ​​the heat exchange frame 52 and the LED module 2, improves the heat absorption effect, and quickly realizes the evaporation of ethanol in the storage tube 51. The sealing ring 55 is used to close the connecting groove 45 to achieve sealing and opening control. The evaporated ethanol in the storage tube 51 pushes the movable plug 53 to move upward. The outer surface of the movable plug 53 is fixedly sleeved with a sealing ring to improve the dynamic sealing effect.

[0044] Among them, an elastic ring 6 is fixedly sleeved inside the outer groove 10, an installation cavity 9 is opened inside the packaging pad 3, the installation cavity 9 is connected with the stepped hole 8, and a compression assembly 7 is fixedly sleeved in the installation cavity 9. The compression assembly 7 includes a cross tube 71, a compression cylinder 72, a sleeve rod 73, a push plate 74 and a spring 75. One end of the cross tube 71 is connected with the compression cylinder 72, and the other end is connected with the elastic ring 6. The sleeve rod 73 is movably sleeved inside the compression cylinder 72, and the push plate 74 is movably sleeved inside the compression cylinder 72, and is fixedly connected to the upper end of the sleeve rod 73. The spring 75 is fixedly connected in the compression cylinder 72, and the lower end is fixedly connected to the push plate 74.

[0045] Among them, the outer surface of the push plate 74 is fixed with a sealing sleeve, which is made of elastic material. The sleeve rod 73 is located above the limit plate 42. The compression component 7 squeezes the internal compressed air into the elastic ring 6 and makes the elastic ring 6 expand.

[0046] By utilizing the compression assembly 7 to compress the internal gas into the elastic ring 6, extrusion expansion is achieved, and the limiting plate 42 is extruded and assembled in the stepped hole 8 to synchronously squeeze the sleeve rod 73 and the push plate 74 in the compression assembly 7 to achieve internal compression, and the spring 75 facilitates elastic reset.

[0047] An assembly method of an assembled LED digital tube plastic shell structure includes the following assembly steps:

[0048] Step 1: sleeve the support frame 11 inside the housing 1, sleeve the LED module 2 in the housing 1, and keep the LED module 2 sleeved in the support frame 11, then nest the packaging pad 3 at the bottom of the housing 1, and keep the pins of the LED module 2 passing through the packaging pad 3;

[0049] Step 2: Sleeve the locking column 41 of the locking assembly 4 along the bottom of the digital tube plastic shell, so that the locking column 41 is inserted along the stepped hole 8, so that the locking column 41 passes through the LED module 2 and is placed in the nesting groove opened on the top of the shell 1, and the locking cover 43 is sleeved in the above-mentioned nesting groove and threadedly sleeved with the locking column 41 to complete the assembly and locking;

[0050] Step 3: As the assembly is locked, the locking column 41 drives the limiting plate 42 at the bottom to move in the stepped hole 8 and is pressed in the stepped hole 8. During the pressing process, the limiting plate 42 pushes the sleeve rod 73 in the compression assembly 7 upward, so that the sleeve rod 73 drives the push plate 74 to compress the internal gas. The air in the compression cylinder 72 is further compressed into the elastic ring 6 through the cross tube 71, completing the inflation expansion. The elastic ring 6 seals the bottom of the shell 1.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An assembled LED digital tube plastic shell structure, comprising a shell (1), wherein a support frame (11), an LED module (2) and a packaging pad (3) are sleeved inside the shell (1), characterized in that: The packaging pad (3) is internally movably sleeved with a locking assembly (4), the upper end of the locking assembly (4) sequentially passes through the packaging pad (3), the LED module (2) and the housing (1), and an active heat dissipation assembly (5) is provided inside the locking assembly (4). The locking assembly (4) comprises a locking column (41), a limiting plate (42), a locking cover (43), an internal cavity (44), a connecting groove (45) and a side groove (46); the locking cover (43) is movably nested on the top of the housing (1) and is threadedly sleeved with the locking column (41); the connecting groove (45) is formed on the outer surface of the locking column (41) and is located above the LED module (2); The active heat dissipation component (5) comprises a storage cylinder (51), a heat exchange frame (52), a movable plug (53), a push rod (54), a sealing ring (55), and an intermediate block (56); the heat exchange frame (52) is fixedly connected to the outside of the storage cylinder (51) and communicated with the inside of the storage cylinder (51); the heat exchange frame (52) is nested in the inner wall of the locking column (41); the communication groove (45) is located on the moving path of the sealing ring (55); an ethanol solution is stored in the storage cylinder (51) and the heat exchange frame (52); the ethanol solution absorbs heat and evaporates When the movable plug (53) and the sealing ring (55) are pushed upward, the connecting groove (45) is opened, the storage cylinder (51) is fixedly sleeved in the internal cavity (44), the heat exchange frame (52) is fixedly sleeved in the side groove (46), the movable plug (53) is movably sleeved in the storage cylinder (51), the push rod (54) is movably sleeved in the end of the storage cylinder (51), the upper and lower ends of the push rod (54) are respectively fixedly connected to the middle block (56) and the movable plug (53), and the middle block (56) is fixedly sleeved in the sealing ring (55).

2. The assembled LED digital tube plastic shell structure according to claim 1, characterized in that: A stepped hole (8) is provided at the bottom of the packaging pad (3); the packaging pad (3) is made of rubber; the support frame (11) is located outside the LED module (2); the packaging pad (3) is located below the LED module (2); and an outer groove (10) is provided on the outer surface of the packaging pad (3).

3. The assembled LED digital tube plastic shell structure according to claim 2, characterized in that: The limiting plate (42) is movably sleeved in the stepped hole (8) and is fixedly connected to the bottom of the locking column (41); the internal cavity (44) is opened inside the locking column (41); the connecting groove (45) is distributed around the outer surface of the locking column (41) and is connected to the internal cavity (44); the side groove (46) is opened on the outer surface of the locking column (41) and is connected to the internal cavity (44); the side groove (46) is located below the connecting groove (45); and a through hole is opened on the top of the locking cover (43).

4. The assembled LED digital tube plastic shell structure according to claim 3, characterized in that: An elastic ring (6) is fixedly sleeved inside the outer groove (10), a mounting cavity (9) is provided inside the packaging pad (3), the mounting cavity (9) is communicated with the stepped hole (8), and a compression assembly (7) is fixedly sleeved in the mounting cavity (9).

5. The assembled LED digital tube plastic shell structure according to claim 4, characterized in that: The compression assembly (7) comprises a transverse tube (71), a compression cylinder (72), a sleeve rod (73), a push plate (74) and a spring (75); one end of the transverse tube (71) is connected to the compression cylinder (72), and the other end is connected to the elastic ring (6); the sleeve rod (73) is movably sleeved inside the compression cylinder (72); the push plate (74) is movably sleeved inside the compression cylinder (72) and fixedly connected to the upper end of the sleeve rod (73); the spring (75) is fixedly connected in the compression cylinder (72), and the lower end is fixedly connected to the push plate (74).

6. The assembled LED digital tube plastic shell structure according to claim 5, characterized in that: The outer surface of the push plate (74) is fixedly covered with a sealing sleeve, which is made of elastic material. The sleeve rod (73) is located above the limit plate (42). The compression component (7) squeezes the internal compressed air into the elastic ring (6) to expand the elastic ring (6).

7. The method for assembling a plastic shell structure of an assembled LED digital tube according to claim 6, characterized in that: The assembly steps include: The first step is to sleeve the support frame (11) inside the housing (1), sleeve the LED module (2) in the housing (1), and keep the LED module (2) sleeved in the support frame (11), and then nest the packaging pad (3) at the bottom of the housing (1), and keep the pins of the LED module (2) passing through the packaging pad (3); Step 2: The locking column (41) of the locking assembly (4) is sleeved along the bottom of the digital tube plastic shell, so that the locking column (41) is inserted along the stepped hole (8), so that the locking column (41) passes through the LED module (2) and is placed in the nesting groove opened on the top of the shell (1), and the locking cover (43) is sleeved in the above-mentioned nesting groove and threadedly sleeved with the locking column (41) to complete the assembly and locking; Step 3: As the assembly is locked, the locking column (41) drives the limiting plate (42) at the bottom to move in the stepped hole (8) and is pressed in the stepped hole (8). During the pressing process, the limiting plate (42) pushes the sleeve rod (73) in the compression assembly (7) upward, so that the sleeve rod (73) drives the push plate (74) to compress the internal gas. The air in the compression cylinder (72) is further compressed into the elastic ring (6) through the cross tube (71), completing the inflation expansion. The elastic ring (6) seals the bottom of the housing (1).

Images