LED display unit and LED display device

Abstract

The utility model provides an LED display unit and an LED display device, and the LED display unit comprises an input optical fiber which comprises a cable and a first connecting part disposed at one end of the cable; the LED box body comprises a frame body with an inner cavity; the second connecting part is arranged on the frame body and can be matched with the first connecting part in an inserting manner; the LED display module is arranged on the front side of the frame body; the control assembly is arranged in the inner cavity, the control assembly comprises a control part and an optical signal adapter, the optical signal adapter is connected between the control part and the second connecting part, and the control part is electrically connected with the LED display module and can convert an optical signal input by the input optical fiber into an electric signal so as to control the working state of the LED display module; and the power supply assembly is electrically connected with the control part and the LED display module. According to the technical scheme, the problem that the control signal is easily interfered or stolen in the prior art can be effectively solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to LED display technical field, specifically, relate to a kind of LED display unit and LED display device. BACKGROUND

[0002] With the continuous development of science and technology, various LED display devices appear in people's daily life to meet different viewing needs. Among them, the LED display device is usually formed by mutually splicing a plurality of LED boxes, thereby forming a larger display surface, and the LED box includes a frame, an LED display module disposed at the front side of the frame, a cover plate disposed at the rear side of the frame, and various electronic components disposed between the cover plate and the LED display module.

[0003] In the art, the control assembly is disposed in the frame among the above-mentioned electronic components, and the control assembly can distribute the control signal from the outside to each LED display module to control the working state of each LED display module. Generally, the control signal is transmitted to the control assembly through a metal cable. Using such a cable to transmit the control signal can cause the control signal to be disturbed or stolen. SUMMARY

[0004] The main purpose of the utility model is to provide an LED display unit and an LED display device to solve the problem that the control signal is easily disturbed or stolen in related technology.

[0005] To achieve the above-mentioned purpose, according to one aspect of the utility model, an LED display unit is provided, comprising: an input optical fiber including a cable and a first connecting portion disposed at one end of the cable; an LED box including: a frame having an inner cavity; a second connecting portion disposed on the frame and capable of being plugged with the first connecting portion; an LED display module disposed at the front side of the frame; a control assembly disposed in the inner cavity, the control assembly including a control portion and an optical signal adapter, the optical signal adapter being connected between the control portion and the second connecting portion, the control portion being electrically connected with the LED display module and being capable of converting the optical signal input by the input optical fiber into an electrical signal to control the working state of the LED display module; a power supply assembly electrically connected with the control portion and the LED display module.

[0006] Further, the first connecting portion includes a first cylinder, the second connecting portion includes a second cylinder, the first cylinder and the second cylinder are plugged together, and the LED display unit further includes a sealing portion disposed between the second cylinder and the first cylinder.

[0007] Further, the end face of the first barrel is provided with a lead-through part, the second barrel is provided with a lead-through matching part, one end of the optical signal adapter is connected to the lead-through matching part, the cable extends into the lead-through part, and the lead-through part and the lead-through matching part are butted to make the optical signal adapter lead through the input optical fiber when the first barrel and the second barrel are inserted and matched.

[0008] Further, one of the lead-through part and the lead-through matching part is a groove, and the other is a protrusion capable of being inserted into the groove.

[0009] Further, the first connecting part further comprises a third barrel provided outside the first barrel and connected to the first barrel, the second barrel is located between the first barrel and the third barrel when the first barrel and the second barrel are inserted and matched, and a retreat-stop structure is arranged between the second barrel and the third barrel to limit separation of the first connecting part and the second connecting part.

[0010] Further, the retreat-stop structure comprises a retreat-stop protrusion and a retreat-stop groove, the retreat-stop protrusion is arranged outside the second barrel, the retreat-stop groove is arranged on the third barrel, the retreat-stop protrusion is capable of sliding in the retreat-stop groove, and the retreat-stop groove comprises a first groove segment and a second groove segment in communication with each other, the second groove segment extends along the circumferential direction of the third barrel and is arranged in a spaced manner with the end face of the third barrel, and the first groove segment communicates the second groove segment and the end face of the third barrel.

[0011] Further, the first barrel and the third barrel are rotatably arranged, and a rotation-stop structure is arranged between the first barrel and the second barrel.

[0012] Further, the LED box comprises a plurality of LED display modules, and the control assembly further comprises a first distribution plate and a second distribution plate, the first distribution plate and the second distribution plate are arranged in a spaced manner along the width direction of the frame body and are connected between the LED display modules and the control part.

[0013] Further, the frame body comprises a support rib and a support plate, the support rib is arranged around the front side of the support plate, the support rib and the front side of the support plate form a plurality of mounting cavities corresponding to the plurality of LED display modules one by one, and a sealing strip is arranged between the support rib and each LED display module.

[0014] According to another aspect of the present application, an LED display device is provided, comprising a controller, a plurality of LED display units and a plurality of input optical fibers, the plurality of LED display units and the plurality of input optical fibers are arranged in a one-to-one correspondence, the input optical fiber is connected between the controller and the corresponding LED display unit, the controller can emit an optical signal, and the LED display unit is the above-mentioned LED display unit.

[0015] The technical scheme of the utility model is applied, the input optical fiber is used for transmitting optical signals to the LED box, the input optical fiber comprises a cable and a first connecting part arranged at one end of the cable, the cable is used for transmitting optical signals, the first connecting part is used for connecting the cable to the LED box, the LED box comprises a frame, a second connecting part, an LED display module, a control assembly and a power supply assembly, the frame provides a mounting base for each part of the LED box, the second connecting part can be plugged with the first connecting part to keep the input optical fiber and the LED box in a stable connection state, the LED display module is arranged at the front side of the frame and is used for realizing display effect, the control assembly comprises a control part and an optical signal adapter, the control part can convert the optical signals input by the input optical fiber into electrical signals, the control part realizes the conduction of optical signals through the optical signal adapter and the cable, the control part is electrically connected with the LED display module, after the optical signals are transmitted to the control part through the input optical fiber and the optical signal adapter, the control part converts and modulates the optical signals into electrical signals, the control part transmits the electrical signals to the LED display module to control the working state of the LED display module, the power supply assembly is electrically connected with the control part and the LED display module to supply power to the control part and the LED display module, compared with the scheme of using a metal cable to transmit control signals, the input optical fiber of the utility model can transmit optical signals to the inside of the LED box, and the optical signals have the advantages of not being easily interfered and stolen, thereby ensuring the safety of control signal transmission, so that the operation of the LED display unit is more stable and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description provide a complete description of the present application. The illustrative embodiments of the present application and their description serve to explain the present application. In addition, the description given above of the illustrative embodiments of the present application does not limit the scope of the present application, but merely provides an example, to those skilled in the art. In the drawings:

[0017] Figure 1 A rear view schematic diagram of an LED box of an embodiment of the LED display unit according to the present application is shown.

[0018] Figure 2 A perspective structural schematic diagram of the LED box of the LED display unit of Figure 1 is shown.

[0019] Figure 3 A perspective structural schematic diagram of the second connecting part of the LED box of the LED display unit of Figure 1 is shown.

[0020] Figure 4 A perspective structural schematic diagram of the first connecting part of the input optical fiber of the LED display unit of Figure 1 is shown.

[0021] Figure 5 Fig. 2 shows a perspective structural schematic view of another angle of the first connecting part of the input optical fiber. Figure 4

[0022] Wherein, the above-mentioned drawings include the following reference signs:

[0023] 10, first connecting part; 11, first barrel; 12, lead-through part; 121, groove; 13, third barrel;

[0024] 20, LED box body; 21, frame body; 211, inner cavity; 212, support rib; 213, support plate; 214, mounting cavity; 22, second connecting part; 221, second barrel; 222, lead-through matching part; 2221, protrusion; 23, LED display module; 24, control assembly; 241, control part; 242, optical signal adapter; 25, power supply assembly; 26, first distribution plate; 27, second distribution plate;

[0025] 30, retreat-stop structure; 31, retreat-stop protrusion; 32, retreat-stop groove; 321, first groove segment; 322, second groove segment;

[0026] 40, rotation-stop structure; 41, rotation-stop protrusion; 42, rotation-stop groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The description of the at least one exemplary embodiment is actually only illustrative, but not intended to limit the present application and its application or use in any way. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0028] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, operation, device, component and / or combination thereof.

[0029] ​The relative arrangement of parts and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship for the convenience of description. The technology, methods and devices known to those skilled in the related art can not be discussed in detail, but under appropriate circumstances, the technology, methods and devices should be regarded as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0030] As Figure 1 and Figures 3 to 5 The present application provides an LED display unit, and embodiments of the LED display unit of the present application include: an input optical fiber, an LED box 20; the input optical fiber includes a cable and a first connecting part 10 arranged at one end of the cable; the LED box 20 includes: a frame 21, a second connecting part 22, an LED display module 23, a control assembly 24, a power supply assembly 25; the frame 21 has an inner cavity 211; the second connecting part 22 is arranged on the frame 21 and can be plugged and matched with the first connecting part 10; the LED display module 23 is arranged on the front side of the frame 21; the control assembly 24 is arranged in the inner cavity 211, and the control assembly 24 includes a control part 241 and an optical signal adapter 242, the optical signal adapter 242 is connected between the control part 241 and the second connecting part 22, the control part 241 is electrically connected with the LED display module 23 and can convert the optical signal input by the input optical fiber into an electrical signal to control the working state of the LED display module 23; the power supply assembly 25 is electrically connected with the control part 241 and the LED display module 23.

[0031] The technical scheme is applied, the input optical fiber is used for transmitting the optical signal to the LED box 20, the input optical fiber comprises a cable and a first connecting part 10 arranged at one end of the cable, the cable is used for transmitting the optical signal, the first connecting part 10 is used for connecting the cable to the LED box 20, the LED box 20 comprises a frame 21, a second connecting part 22, an LED display module 23, a control assembly 24 and a power supply assembly 25, the frame 21 provides a mounting basis for various components of the LED box 20, the second connecting part 22 can be plugged with the first connecting part 10 to keep the input optical fiber and the LED box 20 in a stable connection state, the LED display module 23 is arranged at the front side of the frame 21 and is used for realizing a display effect, the control assembly 24 comprises a control part 241 and an optical signal adapter 242, the control part 241 can convert the optical signal input by the input optical fiber into an electrical signal, the control part 241 realizes the conduction of the optical signal through the optical signal adapter 242 and the cable, the control part 241 is electrically connected with the LED display module 23, after the optical signal is transmitted to the control part 241 through the input optical fiber and the optical signal adapter 242, the optical signal is converted and modulated into an electrical signal by the control part 241, the control part 241 transmits the electrical signal to the LED display module 23 to control the working state of the LED display module 23, the power supply assembly 25 is electrically connected with the control part 241 and the LED display module 23 to supply power to the control part 241 and the LED display module 23, compared with the scheme of using a metal cable to transmit a control signal, the input optical fiber of the embodiment can transmit the optical signal to the inside of the LED box 20, and the optical signal has the advantages of not being easily disturbed and stolen, thereby ensuring the safety of the control signal transmission, and making the operation of the LED display unit more stable and reliable. Therefore, the technical scheme of the embodiment can effectively solve the problem that the control signal is easily disturbed or stolen in the related art.

[0032] As shown in Figures 3 to 5 The first connecting part 10 comprises a first cylinder 11, the second connecting part 22 comprises a second cylinder 221, the first cylinder 11 and the second cylinder 221 are plugged, and the LED display unit further comprises a sealing part arranged between the second cylinder 221 and the first cylinder 11. Specifically, the first cylinder 11 and the second cylinder 221 are arranged to facilitate the plugging of the first connecting part 10 and the second connecting part 22, the sealing part is located between the second cylinder 221 and the first cylinder 11 to prevent impurities from entering the inside of the first connecting part 10 and the second connecting part 22 and affecting the transmission of the optical signal, the sealing part is a sealing layer arranged on the second cylinder 221, and when the first connecting part 10 and the second connecting part 22 are plugged, the sealing part abuts against the first cylinder 11 and the second cylinder 221.

[0033] As shown in Figures 3 to 5As shown, the end face of the first barrel 11 is provided with a lead-through portion 12, the second barrel 221 is provided with a lead-through matching portion 222, one end of the optical signal adapter 242 is connected to the lead-through matching portion 222, the cable extends into the lead-through portion 12, and when the first barrel 11 and the second barrel 221 are inserted and matched, the lead-through portion 12 and the lead-through matching portion 222 are butted to make the optical signal adapter 242 lead through the input optical fiber. Specifically, the lead-through portion 12 and the lead-through matching portion 222 are used to lead through the optical signal adapter 242 and the cable, so as to realize the transmission of the optical signal.

[0034] As shown in the figure, Figures 3 to 5 One of the lead-through portion 12 and the lead-through matching portion 222 is a groove 121, and the other is a protrusion 2221 that can be inserted into the groove 121. Specifically, in this embodiment, the lead-through matching portion 222 is the protrusion 2221, which is arranged in the second barrel 221, and the lead-through portion 12 is the groove 121, which is arranged on the end face of the first barrel 11. One end of the cable extends into the groove 121 from the groove bottom wall, and one end of the optical signal adapter 242 is connected to the protrusion 2221. When the first barrel 11 and the second barrel 221 are inserted and matched, the protrusion 2221 extends into the groove 121, and the groove 121 guides the protrusion 2221, so that one end of the optical signal adapter 242 on the protrusion 2221 can also extend into the groove 121 and butt with one end of the cable in the groove 121, thereby realizing the lead-through of the optical signal adapter 242 and the cable, and thus the smooth transmission of the optical signal.

[0035] As shown in the figure, Figures 3 to 5 The first connecting portion 10 further includes a third barrel 13 arranged outside the first barrel 11 and connected with the first barrel 11. When the first barrel 11 and the second barrel 221 are inserted and matched, the second barrel 221 is located between the first barrel 11 and the third barrel 13, and a retreat-stop structure 30 is arranged between the second barrel 221 and the third barrel 13 to limit the separation of the first connecting portion 10 and the second connecting portion 22. Specifically, the first barrel 11 is connected with the third barrel 13, and when the first barrel 11 and the second barrel 221 are inserted and matched, the arrangement of the retreat-stop structure 30 makes the second barrel 221 and the third barrel 13 lock and match, thereby limiting the separation of the first barrel 11 and the second barrel 221, and further limiting the separation of the first connecting portion 10 and the second connecting portion 22.

[0036] As shown in the figure, Figures 3 to 5As shown, the retreat prevention structure 30 includes a retreat prevention protrusion 31 and a retreat prevention groove 32, the retreat prevention protrusion 31 is arranged on the outer side of the second barrel 221, the retreat prevention groove 32 is arranged on the third barrel 13, the retreat prevention protrusion 31 can slide in the retreat prevention groove 32, the retreat prevention groove 32 includes a first groove section 321 and a second groove section 322 which are communicated with each other, the second groove section 322 extends along the circumferential direction of the third barrel 13 and is arranged in a spaced manner with the end face of the third barrel 13, the first groove section 321 is connected with the end face of the third barrel 13 and the second groove section 322. Specifically, in the embodiment, the first groove section 321 extends along the axial direction of the third barrel 13, the first end of the first groove section 321 is connected with the end face of the third barrel 13, and the second end of the first groove section 321 is connected with the second groove section 322, when the first barrel 11 and the second barrel 221 are inserted and fitted, the retreat prevention protrusion 31 enters the first groove section 321 from the first end of the first groove section 321 and then reaches the communication position of the second end of the first groove section 321 and the second groove section 322, then the third barrel 13 is rotated, so that the retreat prevention protrusion 31 slides in the second groove section 322, at this time, the retreat prevention protrusion 31 can be stopped by the side wall of the second groove section 322, so as to limit the retreat prevention protrusion 31 from leaving the retreat prevention groove 32, thereby realizing the locking of the second barrel 221 and the third barrel 13, and further limiting the separation of the first barrel 11 and the second barrel 221, and further limiting the separation of the first connecting part 10 and the second connecting part 22.

[0037] As shown in the figure, Figures 3 to 5 The first barrel 11 is rotatably arranged with the third barrel 13, and the first barrel 11 and the second barrel 221 are provided with a rotation stopping structure 40. Specifically, in order to ensure the accurate butt joint of the optical signal adapter 242 and the cable, the first barrel 11 and the second barrel 221 need to be rotationally matched, and the rotation stopping structure 40 can realize the rotation stopping matching of the first barrel 11 and the second barrel 221. In the embodiment, the rotation stopping structure 40 includes a rotation stopping protrusion 41 and a rotation stopping groove 42, the rotation stopping groove 42 is arranged on the inner side of the second barrel 221, and the rotation stopping protrusion 41 is arranged on the outer side of the first barrel 11.

[0038] As shown in the figure, Figure 1 The LED box 20 includes a plurality of LED display modules 23, and the control assembly 24 further includes a first distribution plate 26 and a second distribution plate 27, the first distribution plate 26 and the second distribution plate 27 are arranged in a spaced manner along the width direction of the frame 21 and are both connected between the LED display modules 23 and the control part 241. Specifically, in the embodiment, the LED display modules 23 are eight, and along the width direction of the frame 21, the eight LED display modules 23 are divided into two rows, each row of LED display modules 23 includes four LED display modules 23 arranged along the length direction of the frame 21, and the two rows of LED display modules 23 are respectively electrically connected with the first distribution plate 26 and the second distribution plate 27, so as to realize the control of the control part 241 on the LED display modules 23.

[0039] As shown in Figure 2 The frame 21 includes a support rib 212 and a support plate 213, the support rib 212 is arranged around the front side of the support plate 213, the support rib 212 and the front side of the support plate 213 form a plurality of mounting cavities 214 corresponding to a plurality of LED display modules 23, and a sealing strip is arranged between the support rib 212 and each LED display module 23. Specifically, the support rib 212 includes a surrounding rib and a plurality of rib strips, the surrounding rib is arranged around the edge of the support plate 213, the plurality of rib strips are arranged inside the surrounding rib and are arranged longitudinally and transversely, thereby dividing the internal space of the surrounding rib into a plurality of mounting cavities 214, the LED display module 23 is arranged in the mounting cavity 214 one by one, and the sealing strip is arranged between the support rib 212 and each LED display module 23 to prevent impurities from entering the rear side of the LED display module 23, so as to avoid affecting the operation of the LED display module 23.

[0040] The application further provides an LED display device, the LED display device includes a controller, a plurality of LED display units and a plurality of input optical fibers, the plurality of LED display units and the plurality of input optical fibers are arranged one by one, the input optical fiber is connected between the controller and the corresponding LED display unit, and the controller can send an optical signal, wherein the LED display unit is the above-mentioned LED display unit. The above-mentioned LED display unit can effectively solve the problem that the control signal is easy to be disturbed or stolen in the related art, and the LED display device with the above-mentioned LED display unit also has the above-mentioned advantages.

[0041] The LED display device of the embodiment, the LED display unit includes LED boxes, the LED box includes LED display modules, and the lamp beads of the LED display module are small-pitch lamp beads, the pixel pitch is only 0.6 mm, the number of the LED display units is 4, the number of the LED boxes is also 4, and the number of the input optical fibers is also 4 and is arranged in one-to-one correspondence with the LED boxes, although the LED display device is only composed of 4 LED boxes, the pixel number of the LED display device has reached the high-definition level of 1920*1080 (2K), and the physical size is 54 inches, which is comparable to the size of a general 55-inch high-definition liquid crystal screen, which is very different from the traditional LED display device which is of a larger size, and the LED display device can also achieve a breakthrough in small size while ensuring high-definition display; the display effect of the LED display device of the embodiment is outstanding, better than that of a liquid crystal screen, the display color of the LED display device of the embodiment is more brilliant, the contrast is higher, and it is also suitable for close-range viewing, which is very different from the traditional large-size LED display device, and the characteristic that the LED display device of the embodiment can be split into smaller display units (i.e., split into 4 LED boxes) is not possessed by a liquid crystal screen, and the splicing and building of the LED display device of the embodiment are relatively simple and easy.

[0042] The components (i.e., input optical fibers) used for transmitting control signals of the LED display device of the embodiment are of the same type, do not need to be distinguished, do not need to be individually numbered and specified for connection, and can be arbitrarily connected and exchanged between the same type of input optical fibers, greatly simplifying the assembly operation of the LED display device. In the traditional LED display device, the control signals are generally arranged in series in a preset direction by multiple LED boxes, and once the transmission of the control signals of one LED box fails, the entire LED display device cannot be displayed or cannot be displayed in a large area.

[0043] The LED display device of the embodiment will not affect the normal work of other LED boxes if one of the LED boxes has a problem, and in some specific use scenarios, it can maximize the display area. The LED display device of the embodiment adopts a mode of individually controlling each LED box through an input optical fiber, each LED box has its own independent IP, and the LED box with the corresponding IP can be connected by a controller, the brightness, starting coordinates and other parameters of the LED box are independently set, the starting coordinates of the LED box do not need to be adjusted when the LED box is normally working, the control command is synchronously sent to the four LED boxes, and the parameter adjustment of the LED display device is realized.

[0044] The LED display device of the embodiment adopts the principle of intercepting display and then splicing to display a complete 1920*1080 pixel image, four LED boxes receive four same control signals, if the center part of a certain LED box appears display failure, the display failure area can be transferred to the edge of the LED box by changing and exchanging the starting coordinates of the LED box, the integrity of the image information of the key area is ensured, in some application scenarios where the staff cannot access for long-term maintenance, the influence of the display failure factor on the integrity of the overall display is minimized.

[0045] In the description of the utility model, it is understood that the orientation words such as '' front, back, up, down, left, right '' '' horizontal, vertical, perpendicular, horizontal '' and '' top, bottom '' and the like indicated orientation or positional relationship usually based on the orientation or positional relationship shown in the drawings, just for the convenience of describing the utility model and simplifying the description, in the absence of the opposite statement, these orientation words do not indicate and imply that the indicated device or element must have a particular orientation or be constructed and operated in a particular orientation, therefore it cannot be understood as the limitation of the protection scope of the utility model, the orientation words '' inside, outside '' refer to the inside and outside relative to the contour of each component.

[0046] For the convenience of description, spatial relative terms such as '' above '' '' above '' '' upper surface '' '' upper '' and the like can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawing. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawing. For example, if the device in the drawing is inverted, the device described as '' above '' or '' above '' other devices or structures will be positioned '' below '' or '' below '' other devices or structures. Thus, the example term '' above '' can include both '' above '' and '' below '' orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly.

[0047] In addition, it should be noted that the use of '' first '' '' second '' and the like to limit parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, therefore it cannot be understood as the limitation of the protection scope of the utility model.

[0048] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An LED display unit, characterized by, The application relates to an LED display unit. The LED display unit comprises an input optical fiber, a LED box body, a control assembly and a power supply assembly. The input optical fiber comprises a cable and a first connecting part (10) arranged at one end of the cable. The LED box body (20) comprises a frame body (21) with an inner cavity (211), a second connecting part (22) arranged on the frame body (21) and capable of being plugged with the first connecting part (10), an LED display module (23) arranged at the front side of the frame body (21), and a control assembly (24) arranged in the inner cavity (211). The control assembly (24) comprises a control part (241) and an optical signal adapter (242) connected between the control part (241) and the second connecting part (22). The control part (241) is electrically connected with the LED display module (23) and capable of converting the optical signal input by the input optical fiber into an electric signal to control the working state of the LED display module (23). The power supply assembly (25) is electrically connected with the control part (241) and the LED display module (23). The first connecting part (10) comprises a first cylinder (11), the second connecting part (22) comprises a second cylinder (221), the first cylinder (11) and the second cylinder (221) are plugged, and the LED display unit further comprises a sealing part arranged between the second cylinder (221) and the first cylinder (11).

2. The LED display unit of claim 1, wherein, An end surface of the first cylinder (11) is provided with a lead-through part (12), the second cylinder (221) is provided with a lead-through matching part (222), one end of the optical signal adapter (242) is connected to the lead-through matching part (222), the cable extends into the lead-through part (12), and the lead-through part (12) and the lead-through matching part (222) are butted to make the optical signal adapter (242) lead through the input optical fiber when the first cylinder (11) and the second cylinder (221) are plugged.

3. The LED display unit of claim 2, wherein, One of the lead-through part (12) and the lead-through matching part (222) is a groove (121), and the other is a protrusion (2221) capable of being inserted into the groove (121).

4. The LED display unit of claim 3, wherein, The first connecting part (10) further comprises a third cylinder (13) arranged outside the first cylinder (11) and connected with the first cylinder (11), the second cylinder (221) is located between the first cylinder (11) and the third cylinder (13) when the first cylinder (11) and the second cylinder (221) are plugged, and a retreat stopping structure (30) is arranged between the second cylinder (221) and the third cylinder (13) to limit the separation of the first connecting part (10) and the second connecting part (22).

5. The LED display unit of claim 2, wherein, ​ 6. The LED display unit of claim 5, wherein, The retreat prevention structure (30) comprises a retreat prevention protrusion (31) and a retreat prevention groove (32), the retreat prevention protrusion (31) is arranged on the outer side of the second cylinder body (221), the retreat prevention groove (32) is arranged on the third cylinder body (13), the retreat prevention protrusion (31) can slide in the retreat prevention groove (32), the retreat prevention groove (32) comprises a first groove section (321) and a second groove section (322) which are communicated with each other, the second groove section (322) extends along the circumferential direction of the third cylinder body (13) and is arranged in a spaced manner with the end face of the third cylinder body (13), and the first groove section (321) communicates the second groove section (322) and the end face of the third cylinder body (13).

7. The LED display unit of claim 6, wherein, The first cylinder body (11) and the third cylinder body (13) are rotatably arranged, and the stop rotation structure (40) is arranged between the first cylinder body (11) and the second cylinder body (221).

8. The LED display unit of any of claims 1-7, wherein, The LED box (20) comprises a plurality of the LED display modules (23), and the control assembly (24) further comprises a first distribution plate (26) and a second distribution plate (27), the first distribution plate (26) and the second distribution plate (27) are arranged in a spaced manner along the width direction of the frame body (21) and are both connected between the LED display modules (23) and the control part (241).

9. The LED display unit of claim 8, wherein, The frame body (21) comprises a support rib (212) and a support plate (213), the support rib (212) is arranged around the front side of the support plate (213), the front side of the support rib (212) and the support plate (213) forms a plurality of mounting cavities (214) corresponding to the plurality of LED display modules (23) one by one, and a sealing strip is arranged between the support rib (212) and each LED display module (23).

10. An LED display device, comprising a controller, a plurality of LED display units and a plurality of input optical fibers, the plurality of LED display units and the plurality of input optical fibers being arranged in one-to-one correspondence, the input optical fiber being connected between the controller and the corresponding LED display unit, the controller being capable of emitting an optical signal, characterized in that, The LED display unit is the LED display unit according to any one of claims 1 to 9. The LED display unit is the LED display unit according to any one of claims 1 to 9.

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