Raster bar, raster module and LED raster screen

Abstract

The application provides a grating strip, a grating module and an LED grating screen. The grating strip comprises a support and a circuit board, and the support and the circuit board both extend along the length direction of the grating strip. The support is used for being connected with a mounting structure, and a plurality of light emitting elements are arranged on the circuit board and are arranged at intervals along the length direction of the grating strip. The support is provided with a mounting groove, the mounting groove has a first width direction, the circuit board has a second width direction, the side of the circuit board along the second width direction is connected with the inner wall surface of the mounting groove along the first width direction, and the first width direction and the second width direction have an included angle. The grating strip, the grating module and the LED grating screen provided by the application have low manufacturing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a grating strip, a grating module and an LED grating screen. BACKGROUND

[0002] The LED grating screen is a commonly used display device, which has the advantages of simple structure, ventilation and light transmission, small weight, etc.

[0003] The LED grating screen includes a plurality of grating strips, which are arranged in parallel and spaced apart to ventilate and transmit light. The grating strip includes a support and a circuit board, and the circuit board is provided with a plurality of light emitting elements, which are arranged in the length direction of the grating strip. In order to improve the display effect of the LED grating screen, the pixel pitch of the LED grating screen is usually reduced, for example, the width of the grating strip is reduced to reduce the distance between adjacent two grating strips, and the number of light emitting elements is increased.

[0004] However, the width of the circuit board on the grating strip is also correspondingly reduced, and the size of the electrical device on the circuit board is correspondingly reduced to facilitate the assembly of the grating strip, and the manufacturing cost of the grating strip is increased. SUMMARY

[0005] In view of the above problems, the embodiments of the present application provide a grating strip, a grating module and an LED grating screen, which have low manufacturing cost.

[0006] In order to achieve the above purpose, the embodiments of the present application provide the following technical solutions:

[0007] The first aspect of the embodiments of the present application provides a grating strip, which includes a support and a circuit board, and the support and the circuit board both extend in the length direction of the grating strip; the support is used to be connected with a mounting structure, and the circuit board is provided with a plurality of light emitting elements, which are arranged in the length direction of the grating strip. The light emitting element can emit light of a predetermined color according to the requirement.

[0008] In some embodiments, the support is provided with a mounting groove, the mounting groove has a first width direction; the circuit board has a second width direction, the side of the circuit board along the second width direction is connected with the inner wall surface of the mounting groove along the first width direction, and the first width direction and the second width direction have an included angle. In this way, the circuit board is arranged obliquely relative to the mounting groove, when the mounting groove has a predetermined width size, the width of the circuit board can be greater than the width of the mounting groove, so as to arrange a larger number or larger size of electrical devices, and the manufacturing cost of the grating strip is low.

[0009] The second aspect of the embodiments of the present application provides a grating module, which includes a plurality of grating strips of the first aspect, the plurality of grating strips are parallel to each other, and the second width directions of the circuit boards of the plurality of grating strips are parallel to each other.

[0010] By adopting the above grating strip, the grating module can have good display effect and good light passing and ventilation effect, and has low manufacturing cost.

[0011] The third aspect of the embodiment of the present application provides an LED grating screen, which comprises a plurality of grating modules of the second aspect, and the plurality of grating modules are arranged side by side. By adopting the above grating module, the grating module can be arranged as needed, the LED grating screen has good ventilation effect, and has low manufacturing cost.

[0012] In addition to the technical problems solved by the above-described embodiments of the present application, the technical features constituting the technical solutions, and the beneficial effects brought by these technical features, other technical problems solved by the grating strip, the grating module and the LED grating screen provided by the embodiments of the present application, other technical features included in the technical solutions, and the beneficial effects brought by these technical features will be further described in detail in the specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0014] Figure 1 Structure diagram of the grating module provided by the embodiment of the present application Figure 1

[0015] Figure 2 Structure diagram of the grating module provided by the embodiment of the present application Figure 2

[0016] Figure 3 Structure diagram of the grating module provided by the embodiment of the present application Figure 3

[0017] Figure 4 Structure diagram of the grating strip in the embodiment of the present application Figures 1 to 3

[0018] Exploded structure diagram of the grating strip in the embodiment of the present application Figure 5 Figure 4 Structure diagram of the A part in the embodiment of the present application

[0019] Figure 6 Figure 5

[0020] Figure 7 Figure 4 ​​​​​​​A sectional view along the middle edge BB;

[0021] Figure 8 for Figure 5 A cross-sectional view along CC when the grating strips are in the combined state;

[0022] Figure 9 for Figure 5 A schematic diagram of the structure of the middle support component.

[0023] Figure label:

[0024] 1-Raster strip;

[0025] 11-Support member; 111-First support part; 112-Second support part; 113-Connecting part; 114-Slot; 115-Snap-fit ​​protrusion;

[0026] 12-Circuit board;

[0027] 13-Light-emitting components;

[0028] 14-End cap; 141-Hook;

[0029] 15 - Sealant layer;

[0030] 16 - Elastic sealing ring;

[0031] 17-Control components;

[0032] 18 - Electrical connectors;

[0033] 2-Raster module;

[0034] 21-Factor;

[0035] D-mount slot;

[0036] L - Length direction;

[0037] W1 - First width direction;

[0038] W2 - Second width direction;

[0039] a- Top viewpoint. Detailed Implementation

[0040] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0041] In existing technologies, to improve the display effect of LED grating screens, the width of the grating strips is typically reduced while the number of light-emitting elements on the grating strips is increased. This allows for a smaller spacing between adjacent grating strips and a smaller pixel pitch. However, this also reduces the area of ​​the LED grating screen used for light transmission and ventilation, the size of the circuit board for the grating strips, and the space for arranging electrical components on the circuit board. Therefore, to accommodate the electrical components, their size needs to be reduced, leading to an increase in the cost of the grating strips and the LED grating screen using them.

[0042] In view of this, embodiments of this application provide a grating strip, a grating module, and an LED grating screen. The grating strip includes a support member and a circuit board. The support member has a mounting groove, the width direction of which is the width direction of the support member. The width direction of the circuit board forms an angle with the width direction of the mounting groove. This allows the width of the circuit board to be greater than the width of the mounting groove, providing a larger arrangement space for mounting and fixing electrical components. The manufacturing cost of the grating strip, grating module, and LED grating screen is also relatively low.

[0043] Figure 1 Schematic diagram of the structure of the grating module provided in the embodiments of this application Figure 1 . Figure 2 Schematic diagram of the structure of the grating module provided in the embodiments of this application Figure 2 . Figure 3 Schematic diagram of the structure of the grating module provided in the embodiments of this application Figure 3 . Figure 4 for Figures 1 to 3 A schematic diagram of the structure of the grating strip. Figure 5 for Figure 4 A schematic diagram of the exploded structure of the middle grating strip. Figure 6 for Figure 5 A schematic diagram of the structure of part A. Figure 7 for Figure 4 A cross-sectional view along the middle BB. Figure 8 for Figure 5 A cross-sectional view along CC when the grating strips are in the combined state. Figure 9 for Figure 5 A schematic diagram of the structure of the middle support component.

[0044] Please see Figures 1 to 9 This embodiment provides a grating strip 1, which includes a support member 11. The support member 11 extends along the length direction L of the grating strip 1 and is used to connect with the mounting structure of the grating module 2 (e.g., the fixing member 21 described below).

[0045] The support member 11 can be made of plastic. In some embodiments, the support member 11 can be made of metal, such as aluminum, which provides higher strength and a longer service life.

[0046] The grating strip 1 further comprises a circuit board 12, which also extends along the length direction L of the grating strip 1. The circuit board 12 is a printed circuit board (PCB).

[0047] The circuit board 12 is provided with a plurality of light emitting pieces 13, which are arranged at intervals along the length direction L of the grating strip 1. The light emitting pieces 13 can be light emitting diodes (LEDs), which are low in cost.

[0048] The light emitting pieces 13 are a plurality of light emitting pieces 13 arranged at intervals along the length direction L of the grating strip 1, and the interval between two adjacent light emitting pieces 13 can be set as required.

[0049] The circuit board 12 is provided with a control piece 17 and an electrical connecting piece 18. One end of the electrical connecting piece 18 is connected to the circuit board 12, and the other end thereof can be connected to a power supply, for supplying power to the light emitting pieces 13. The control piece 17 is connected to the circuit board 12, and can be used to control the on-off of the light emitting pieces 13, and the control mode of the control piece 17 is not limited in the embodiment.

[0050] The support piece 11 can be a plate-shaped structural piece. In order to simplify the appearance of the grating strip 1, in some embodiments, the support piece 11 is provided with a mounting groove D, and the circuit board 12 can be arranged at the groove opening position of the mounting groove D. At this time, the control piece 17 can be arranged in the mounting groove D, and one end of the electrical connecting piece 18 is connected to the circuit board 12, and the other end thereof extends out of the mounting groove D.

[0051] Correspondingly, the support piece 11 forms a protection for the control piece 17, the circuit board 12, etc., so as to avoid being impacted by external objects.

[0052] The mounting groove D extends along the extension direction of the grating strip 1, that is, the mounting groove D constitutes a strip-shaped groove. The recess depth of the mounting groove D and the width dimension of the mounting groove D can be set according to the size of the control piece 17, etc. The width of the mounting groove D extends along a first width direction W1.

[0053] The circuit board 12 is arranged in the mounting groove D, and the light emitting pieces 13 are exposed at the groove opening of the mounting groove D, so that the light emitted by the light emitting pieces 13 can be emitted out of the groove opening of the mounting groove D.

[0054] Since the circuit board 12 and the support piece 11 are both strip-shaped structural pieces, the side edge of the circuit board 12 along a second width direction W2 is connected to the inner wall surface of the mounting groove D along the first width direction W1. In this way, the circuit board 12 can be capped at the groove opening of the mounting groove D.

[0055] In some embodiments, the circuit board 12 has a second width direction W2, and the first width direction W1 and the second width direction W2 form an angle. That is, the circuit board 12 is arranged obliquely relative to the mounting slot D, so that, compared with the parallel arrangement of the first width direction W1 and the second width direction W2, the circuit board 12 has a larger board area exposed to the mounting slot D, that is, a larger space for arranging electrical devices, and the circuit board 12 can be provided with electrical devices of a conventional size, thereby avoiding the increase in the manufacturing cost of the grating bar 1.

[0056] When the number of grating bars in the grating module 2 is unchanged, the width of the support 11 can be reduced by arranging the circuit board 12 obliquely, so that the distance between two adjacent grating bars is increased, and the transmittance of the grating module 2 is increased.

[0057] It can be understood that, if the width of the circuit board 12 is the same as that of the circuit board in the prior art, the width of the support 11 can be smaller than that of the support in the prior art. When the grating bar 1 is applied to the grating module 2, the grating module 2 can have a larger number of grating bars 1 without changing the size of the grating module 2, so as to reduce the pixel pitch, and the distance between two adjacent grating bars 1 can be larger, and the grating module 2 has a larger transmittance.

[0058] If the width of the support 11 is the same as that of the support 11 in the prior art, the space for arranging electrical devices on the circuit board 12 can be increased by arranging the circuit board 12 obliquely.

[0059] In some embodiments, the width of the support 11 can be further reduced under the condition that the circuit board 12 is arranged obliquely, so that, under the condition that the grating module 2 has a larger transmittance, the circuit board 12 still has a larger arrangement space, and the number of grating bars is increased, so as to optimize the display effect of the grating module 2 and the LED grating screen.

[0060] In some embodiments, the angle between the first width direction W1 and the second width direction W2 is 5°-30°, and the present embodiment is not limited thereto. For example, the angle between the first width direction W1 and the second width direction W2 can be changed according to the mounting height of the grating module 2 relative to the ground.

[0061] Considering that the grating module 2 usually has a predetermined height relative to the ground, the circuit board 12 can be arranged obliquely toward the side of the ground, so that the user has a more appropriate upward viewing angle a, and it is easy for the user to obtain the image information of the grating module 2.

[0062] In some embodiments, the support 11 comprises a first support portion 111, a second support portion 112 and a connecting portion 113, the first support portion 111 and the second support portion 112 are arranged at intervals along the first width direction W1, and the connecting portion 113 is used to connect the first end of the first support portion 111 and the first end of the second support portion 112. That is, the cross-sectional shape of the support 11 is approximately U-shaped, and the structure is relatively simple.

[0063] The connecting portion 113 is used to be connected with the mounting structure. That is, the grating bar 1 is connected with the mounting structure through the connecting portion 113. For example, the grating bar 1 can be directly connected with the mounting structure through a threaded fastener.

[0064] In some embodiments, when the grating bar 1 is applied to the grating module 2, the grating module 2 comprises a plurality of grating bars 1. At this time, the grating module 2 can comprise a fixing member 21, and the plurality of grating bars 1 are connected with the fixing member 21 through threaded fasteners respectively, and the fixing member 21 is connected with the mounting device.

[0065] The outer wall surface of the corresponding support 11 is provided with a threaded connection hole. The threaded connection hole can be a blind hole, so that the mounting groove D has good sealing performance.

[0066] The first support portion 111 and the connecting portion 113, and the second support portion 112 and the connecting portion 113 can be connected through a threaded fastener. In some embodiments, the support 11 can be an integrally formed thin-walled member, which is easy to assemble the grating bar 1, and avoids that the grating bar 1 has a large weight.

[0067] The circuit board 12 is located at the opening position of the U-shaped structure, that is, the two edges of the circuit board 12 along the width direction thereof are connected with the second end of the first support portion 111 and the second end of the second support portion 112 respectively.

[0068] The first support portion 111 and the second support portion 112 can have an included angle therebetween, so that the mounting groove D has a larger notch. In some embodiments, the first support portion 111 is perpendicular to the first width direction W1, and the second support portion 112 is perpendicular to the second width direction W2. In this way, the structure of the support 11 is simplified, and meanwhile, the width of the support 11 can be avoided to be increased. At this time, the connecting portion 113 can extend along the first width direction W1.

[0069] The circuit board 12 and the support 11 can be connected through a threaded fastener. In some embodiments, the first support portion 111 and the second support portion 112 are each provided with a clamping groove 114, the two clamping grooves 114 are opposite to each other, and the side edge of the circuit board 12 extends into the clamping groove 114 and is clamped with the clamping groove 114. In this way, the circuit board 12 can be connected with the support 11 through a plug-in mode, which is easy to assemble.

[0070] The width of the clamping groove 114 is greater than the thickness of the circuit board 12 to facilitate the insertion.

[0071] In some embodiments, the grating bar 1 further comprises two end covers 14, each of which is connected to one end of the support 11. The support 11, the circuit board 12 and the two end covers 14 are used to close the mounting groove D to avoid dust deposition in the mounting groove D. The grating bar 1 has good waterproof performance to improve the service life of the grating bar 1.

[0072] At this time, the control member 17 is located in the mounting groove D and is electrically connected to the circuit board 12. One end of the electrical connecting member 18 is electrically connected to the circuit board 12, and the other end penetrates through the support 11 and extends to the outside of the mounting groove D. That is, the control member 17 and the electrical devices connected to the circuit board 12 can be located in the closed mounting groove D to form better protection through the grating bar 1.

[0073] In some embodiments, the connecting portion 113 has a through hole through which the electrical connecting member 18 penetrates. An elastic sealing ring 16 can be arranged at the position of the through hole to seal the through hole.

[0074] The end cover 14 can be connected to the support 11 by a threaded fastener. In some embodiments, the inner wall surface of the support 11 is provided with a clamping protrusion 115, and the end cover 14 is provided with a clamping hook 141 which is hooked with the clamping protrusion 115.

[0075] The clamping hook 141 can be a plurality of, and the clamping protrusion 115 and the clamping hook 141 are one-to-one corresponding to improve the connection stability between the support 11 and the end cover 14.

[0076] The clamping hook 141 is provided with a guide inclined surface. When assembling the grating bar 1, the end cover 14 moves towards the inside of the mounting groove D along the length direction L of the grating bar 1, and the guide inclined surface is used to abut with the clamping protrusion 115. At this time, the clamping hook 141 can be elastically deformed until the clamping hook 141 is hooked with the clamping protrusion 115.

[0077] In some embodiments, the support 11 and the circuit board 12 are clamped by the clamping groove 114, and the support 11 and the end cover 14 are clamped. The grating bar 1 has no threaded connection structure, and the assembly efficiency of the grating bar 1 is high.

[0078] In some embodiments, the side surface of the circuit board 12 on which the light emitting member 13 is arranged is coated with a sealing glue layer 15 formed by curing of sealing glue to protect the circuit board 12.

[0079] As can be seen from the above embodiment, the circuit board 12 and the card slot 114 have a large gap therebetween, and the connecting position between the circuit board 12 and the support 11 is filled with sealant. On the one hand, after the sealant is cured, the circuit board 12 and the support 11 are relatively fixed through the sealant, so that the circuit board 12 can be prevented from shaking relative to the support 11. On the other hand, the sealant seals the connecting position between the circuit board 12 and the support 11, so that dust, water and the like are prevented from entering the mounting groove D through the connecting position, and the sealing performance of the mounting groove D is better.

[0080] The sealant can be a silicone adhesive or the like known to those skilled in the art.

[0081] In some embodiments, the protruding height of the first support portion 111 protruding from the connecting portion 113 can be the same as the protruding height of the second support portion 112 protruding from the connecting portion 113.

[0082] In some embodiments, the protruding height of the first support portion 111 protruding from the connecting portion 113 is greater than the protruding height of the second support portion 112 protruding from the connecting portion 113, so that the second end of the first support portion 111 protrudes to the outside of the second end of the second support portion 112, and the side of the circuit board 12 on which the light emitting member 13 is arranged is inclined towards the second support portion 112.

[0083] That is, by making the second support portion 112 have a smaller protruding height, the second support portion 112 can be prevented from blocking the light of the light emitting member 13. At the same time, since the first support portion 111 has a larger protruding height, the light emitting member 13, the circuit board 12 and the like can be protected, for example, foreign matter falling from above can be prevented from impacting the light emitting member 13.

[0084] At the same time, when the grating module 2 is applied outdoors, the grating bar 1 extends in the horizontal direction, the first support portion 111 can have a light shielding effect, the structure is relatively simple, the contrast of the image information on the grating module 2 is improved, and the image information of the grating module 2 is prevented from being unclear due to outdoor light irradiation.

[0085] The difference between the protruding height of the first support portion 111 and the protruding height of the second support portion 112 can be set as needed.

[0086] The embodiment provides a grating module 2 for displaying preset image information such as images and characters. The grating module 2 includes a plurality of grating bars 1 described above, the plurality of grating bars 1 are parallel to each other, and the second width directions W2 of the circuit boards 12 of the plurality of grating bars 1 are parallel to each other. The structure, function and working principle of the grating bar 1 have been described in the above embodiment, and will not be described herein.

[0087] The grating module 2 further comprises the fixing member 21, each grating bar 1 is fixed on the fixing member 21, and the fixing member 21 is connected with the fixing structure of the LED grating screen.

[0088] The first width direction W1 of the mounting groove D is arranged at an angle with the second width direction W2 of the circuit board 12, so that the exposed area of the circuit board 12 at the mounting groove D is large, that is, the space for arranging the electrical devices is large, and the electrical devices of a conventional size can be arranged on the circuit board 12, thereby avoiding the increase of the manufacturing cost of the grating module 2.

[0089] When the number of grating bars in the grating module 2 is unchanged, the circuit board is arranged obliquely, so that the width of the support member is reduced, the distance between the adjacent two grating bars is increased, and the transmittance of the grating module 2 is increased.

[0090] It can be understood that if the width of the circuit board 12 is the same as that of the circuit board 12 in the prior art, the width of the support member 11 can be reduced. When the grating bar 1 is applied to the grating module 2, the grating module 2 can have a large number of grating bars 1 without changing the size of the grating module 2, so as to reduce the pixel distance, and the distance between the adjacent two grating bars 1 can be large, and the grating module 2 has a large transmittance.

[0091] If the width of the support member 11 is the same as that of the support member in the prior art, that is, the width of the mounting groove D is the same as that of the mounting groove in the prior art, the circuit board 12 is arranged obliquely, so as to increase the space for arranging the electrical devices of the circuit board 12.

[0092] In some embodiments, the width of the support member 11 can be further reduced under the condition that the circuit board 12 is arranged obliquely, so that under the condition that the grating module 2 has a large transmittance, the circuit board 12 still has a large arrangement space, and the number of grating bars is increased, so as to optimize the display effect of the grating module 2.

[0093] The grating module 2 can be used indoors or outdoors. When the grating module 2 is applied to outdoors, the grating bar 1 can extend in the horizontal direction, so that the first support part 111 plays a role of light shielding.

[0094] The embodiment provides an LED grating screen (not shown), which comprises a plurality of grating modules 2, and the plurality of grating modules 2 are arranged side by side. The structure, function and working principle of the grating module 2 have been described in the above embodiment, and details are not described herein.

[0095] According to the need, the grating module 2 can have various arrangements, for example, a plurality of grating modules can be arranged in any direction (horizontal direction, vertical direction or other inclined direction), or can be arranged in a vertical and horizontal manner.

[0096] According to the structure of the LED grating screen, the plurality of grating modules 2 can be independently connected to the fixing structure of the LED grating screen. For example, when the LED grating screen is applied outdoors, the fixing structure of the LED grating screen can be the outer wall of a building, and at this time, each grating module 2 is connected to the outer wall of the building through the respective fixing member 21. When the LED grating screen is applied indoors, the fixing structure of the LED grating screen can be the wall surface of a room, and at this time, each grating module 2 is connected to the wall surface through the respective fixing member 21. In this way, it is easy to maintain and replace each grating module 2.

[0097] It can be understood that the LED grating screen can also have a support structure, and the fixing member 21 of each grating module 2 is connected to the support structure to assemble the LED grating screen into a whole, and at this time, the support structure is connected to the outer wall of the building or the indoor wall surface.

[0098] By using the above grating module 2, the LED grating screen has lower manufacturing cost, higher transmittance, and better image display effect.

[0099] In the description of the present specification, each embodiment or implementation is described in a progressive manner, and each embodiment focuses on the difference from other embodiments. The same or similar parts between the embodiments can be referred to each other.

[0100] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0101] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A grating bar, characterized by The support and the circuit board both extend along the length direction of the grating bar; the support is used to be connected with the mounting structure, and the circuit board is provided with a plurality of light emitting elements which are arranged at intervals along the length direction of the grating bar; The support is provided with a mounting groove, the mounting groove has a first width direction; the circuit board has a second width direction, the side edge of the circuit board along the second width direction is connected with the inner wall surface of the mounting groove along the first width direction, and the first width direction and the second width direction have an included angle; The support comprises a first support part, a second support part and a connecting part, the connecting part is used to be connected with the mounting structure, the first support part and the second support part are arranged at intervals along the first width direction, and the connecting part is used to connect the first end of the first support part and the first end of the second support part; The two edges of the circuit board along the width direction thereof are connected with the second end of the first support part and the second end of the second support part respectively.

2. The grating bar of claim 1, wherein, The included angle between the first width direction and the second width direction is 5°-30°.

3. The grating bar of claim 2, wherein, The first support part is perpendicular to the first width direction, and the second support part is perpendicular to the second width direction.

4. The grating bar of claim 2, wherein, The first support part and the second support part are both provided with a clamping groove, the two clamping grooves are opposite, and the side edge of the circuit board extends into the clamping groove and is clamped with the clamping groove.

5. The grating bar of claim 2, wherein, The grating bar further comprises end covers, the number of the end covers is two, the two end covers are connected with the two ends of the support respectively, and the support, the circuit board and the two end covers are used to close the mounting groove; The circuit board is provided with a control element and an electrical connecting element, the control element is located in the mounting groove and is electrically connected with the circuit board, one end of the electrical connecting element is electrically connected with the circuit board, and the other end of the electrical connecting element extends out to the outside of the mounting groove through the support.

6. The grating bar of claim 5, wherein, The inner wall surface of the support is provided with a clamping protrusion, the end cover is provided with a clamping hook, and the clamping hook is hooked with the clamping protrusion.

7. The grating bar of claim 5, wherein, The side surface of the circuit board on which the light emitting elements are arranged is coated with a sealant layer formed by curing of sealant, and the connecting position between the circuit board and the support is filled with the sealant.

8. The grating bar of claim 2, wherein, The protruding height of the first support part from the connecting part is greater than the protruding height of the second support part from the connecting part, so that the second end of the first support part extends to the outside of the second end of the second support part; The side surface of the circuit board on which the light emitting elements are arranged is arranged to be inclined towards the second support part.

9. A grating module, characterized by The grating module comprises the grating bar as claimed in any one of claims 1-8, a plurality of the grating bars are parallel to each other, and the second width directions of the circuit boards of the plurality of grating bars are parallel to each other.

10. An LED light grating screen, characterized by, The grating module comprises the grating module as claimed in claim 9, and a plurality of the grating modules are arranged side by side.

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