LED lamp strip with light diffusion function and lamp box using LED lamp strip

Abstract

The invention discloses an LED lamp strip with a light diffusion function and a lamp box applying the LED lamp strip, the LED lamp strip comprises a circuit board, a plurality of LED lamp beads, an optical PC cover, an inner plug and an outer plug, the plurality of LED lamp beads are installed on the circuit board, and the circuit board is installed in the optical PC cover; the optical PC cover is provided with a light diffusion part used for diffusing light emitted by the LED lamp beads. The inner plugs are plugged at the two ends of the optical PC cover, and the outer plugs are wrapped outside the inner plugs. Therefore, the LED lamp strip adopts the optical PC cover, light emitted by the LED lamp is secondarily refracted by the optical PC cover, the irradiation angle of the LED lamp bead is enlarged, the irradiation area of the LED lamp bead is larger, and light emitted by the LED lamp bead is fully utilized; in addition, the inner plug and the outer plug are arranged at the two ends of the LED light bar, the circuit board, the optical PC cover, the wire rod and the radiator are preliminarily combined into a whole through the inner plug, then the outer plug is completely sealed through injection molding and rubber coating, the waterproof effect is achieved, and the service life is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of LED lamp technology, and in particular to an LED light bar with a light diffusion function and a light box using the LED light bar. Background Art

[0002] At present, there are two types of LED light strip products on the market. One is to install a single lens on the PCB light board to achieve the function of diffusing light, and then put the circuit board with the lens into the aluminum groove, and process the protection level of the light strip by pouring glue into the aluminum groove. In this solution, a lens needs to be placed on top of each lamp bead during production. When the length is increased, the number of lenses needs to be increased. The production efficiency is low and a lot of labor is required. Secondly, when doing the protection level processing, an additional glue pouring process is also required. The product process is complicated and the consistency is low.

[0003] The other is to use an integrated PC cover, which is to first stick the LED lamp beads on the circuit board, then install them in the integrated PC cover, and then install the plugs at both ends and apply sealing glue. This solution has a good improvement in protection function, but there is no light diffusion function, and the maximum luminous angle is 120 degrees. Figure 1 In addition, traditional LED light bars generally do not have heat dissipation structures and illumination angle adjustment functions, resulting in low heat dissipation efficiency, short service life, and inability to adjust the lighting angle according to application scenarios, which brings inconvenience to use. Therefore, existing LED light bars should be improved to solve the above problems. Summary of the invention

[0004] In view of this, the present invention aims to solve the deficiencies in the prior art, and its main purpose is to provide an LED light strip with light diffusion function and a light box using the LED light strip. The LED light strip adopts an optical PC cover, which refracts the light emitted by the LED lamp for a second time, thereby expanding the illumination angle of the LED lamp beads themselves, making their illumination area larger, and making full use of the light emission of the LED lamp beads. In addition, inner plugs and outer plugs are provided at both ends of the LED light strip. The inner plug preliminarily combines the circuit board, optical PC cover, wire and radiator into a whole, and then completely seals it with the outer plug through injection molding to achieve a waterproof effect and extend the service life.

[0005] To achieve the above purpose, the present invention adopts the following technical solutions:

[0006] An LED light strip with a light diffusion function comprises a circuit board, a plurality of LED lamp beads, an optical PC cover, an inner plug and an outer plug, wherein the plurality of LED lamp beads are mounted on the circuit board, and the circuit board is mounted in the optical PC cover; the optical PC cover has a light diffusion portion for diffusing light emitted by the LED lamp beads; the inner plug is sealed at both ends of the optical PC cover, and the outer plug is covered on the outside of the inner plug.

[0007] As a preferred solution: the optical PC cover includes two side walls and the light diffusion part, the light diffusion part is arc-shaped and integrally located on the top of the two side walls, and upper limit plates are symmetrically arranged on the upper inner side of the two side walls. A first accommodating groove for accommodating the circuit board is formed between the upper limit plate and the light diffusion part, the circuit board is located in the first accommodating groove, and the LED lamp beads are facing the light diffusion part.

[0008] As a preferred solution: lower limit plates are symmetrically arranged on the lower inner side of the two side walls, a second accommodating groove is formed between the upper limit plate and the lower limit plate, a radiator for dissipating heat for the circuit board is installed in the second accommodating groove, and the top of the radiator is in close contact with the lower surface of the circuit board.

[0009] As a preferred solution: the radiator is hollow inside, and a left embedding groove, a middle embedding groove and a right embedding groove are formed between the radiator and the upper limit plate and the lower limit plate; the inner plug includes a surrounding edge and a left embedding block, a middle embedding block, a right embedding block located inside the surrounding edge, and an upper embedding block adapted to the end of the first accommodating groove, the left embedding block, the middle embedding block and the right embedding block are correspondingly located in the left embedding groove, the middle embedding groove and the right embedding groove; the upper embedding block is located at the end of the first accommodating groove.

[0010] As a preferred solution: embedded ribs are respectively arranged on both sides of the radiator, and embedded grooves are respectively arranged on the upper limit plate and the lower limit plate corresponding to the embedded ribs, and the embedded ribs are embedded in the embedded grooves; and the lower surface of the radiator has a plurality of heat dissipation ribs, and the heat dissipation ribs are exposed on the outside of the optical PC cover.

[0011] As a preferred solution: the inner plug includes a front mating part and a rear mating part, the surrounding edge, left embedded block, middle embedded block, right embedded block and upper embedded block are all located on the front mating part, the rear mating part is integrally connected to the rear end of the front mating part, and limiting grooves are respectively arranged on both sides of the rear mating part; the outer plug includes an integrally connected hollow front wrapping part and a rear wrapping part, the front mating part is located in the front wrapping part, the rear mating part is located in the rear wrapping part, and installation grooves are respectively arranged on the outer walls on both sides of the surrounding edge, and installation protrusions are respectively arranged on the inner walls on both sides of the front wrapping part corresponding to the installation grooves, and the installation protrusions are embedded in the installation grooves.

[0012] As a preferred solution: a hollow opening is provided on the rear wrapping portion corresponding to the upper limit groove of the rear matching portion, and the limit groove is exposed from the hollow opening.

[0013] As a preferred solution: the inner plug and the outer plug are correspondingly provided with threading holes connected with the first accommodating groove.

[0014] A light box, using the LED light strip, also includes a box body and a plurality of rotating adjustment seats installed in the box body, the rotating adjustment seat includes a supporting seat and a connecting seat, the connecting seat is hinged on the supporting seat, and an elastic tooth structure for positioning the rotation angle of the connecting seat is arranged at the hinge between the connecting seat and the supporting seat; connecting recesses are respectively arranged on both sides of the optical PC cover, and connecting protrusions are respectively arranged on the inner walls on both sides of the connecting seat corresponding to the connecting recesses, and the connecting protrusions are embedded in the connecting recesses.

[0015] As a preferred solution: a connecting line which can be bent to adjust the distance between the adjacent rotation adjustment seats is connected between two adjacent rotation adjustment seats.

[0016] Compared with the prior art, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical scheme that the LED light strip has a light diffusion function. When designing its optical PC cover, a secondary optical light distribution design is performed on its light-transmitting surface. The optical PC cover refracts the light emitted by the LED lamp for a second time, thereby expanding the illumination angle of the LED lamp beads themselves, making their illumination area larger, and making full use of the light emission of the LED lamp beads. In addition, an inner plug and an outer plug are provided at both ends of the LED light strip. The function of the inner plug is to preliminarily combine the circuit board, the optical PC cover, the wire and the radiator into a whole, and then completely seal it through the injection molding and rubber-coating of the outer plug to achieve a waterproof effect and extend the service life.

[0017] In order to more clearly illustrate the structural features and effects of the present invention, it is described in detail below in conjunction with the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the light emitting angle of a traditional light bar;

[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the light bar of the present invention;

[0020] Figure 3 for Figure 2 AA section diagram;

[0021] Figure 4 It is a schematic diagram of the light emitting angle of the lamp body of the present invention;

[0022] Figure 5 It is an exploded three-dimensional schematic diagram of the light bar of the present invention;

[0023] Figure 6 This is a schematic diagram of a three-dimensional exploded view of the light bar of the present invention from another perspective;

[0024] Figure 7 This is a schematic diagram of the end face of the optical PC cover of the present invention;

[0025] Figure 8 It is a schematic diagram of the end face of the heat sink of the present invention;

[0026] Fig. 9 It is a schematic diagram of the three-dimensional structure of the plug in the present invention;

[0027] Fig.10 This is a schematic diagram of the three-dimensional structure of the plug outside the present invention;

[0028] Fig.11 It is a three-dimensional schematic diagram of the light box of the present invention;

[0029] Fig.12 It is a three-dimensional schematic diagram of a plurality of rotating adjustment seats connected and the connection lines bent according to the present invention;

[0030] Fig.13 It is a schematic diagram of the rotary adjustment seat of the present invention;

[0031] Fig.14 for Fig.13 The enlarged schematic diagram is shown at M.

[0032] Description of the accompanying drawings:

[0033] 10. Circuit board; 20. LED lamp beads; 30. Optical PC cover; 31. Light diffusion part; 32. Side wall; 321. Upper limit plate; 322. Lower limit plate; 33. First accommodating groove; 34. Second accommodating groove; 35. Left embedded groove; 36. Middle embedded groove; 37. Right embedded groove; 38. Embedding groove; 39. Connecting concave position; 4. Internal plug; 41. Surrounding edge; 42. Left embedded block; 43. Middle embedded block; 44. Right embedded block; 45. Upper embedded block; 46. Front mating part; 47, rear matching part; 48, limiting groove; 49, installation groove; 50, external plug; 51, front wrapping part; 52, rear wrapping part; 53, installation protrusion; 54, hollow opening; 60, threading hole; 70, wire; 80, radiator; 81, embedded rib; 82, heat dissipation rib; 90, light box; 91, box body; 92, rotation adjustment seat; 93, support seat; 94, connecting seat; 95, elastic tooth structure; 96, connecting protrusion; 97, connecting line; 98, screw. DETAILED DESCRIPTION

[0034] The present invention Figures 2 to 14As shown, an LED light bar with light diffusion function and a light box 90 using the LED light bar, the LED light bar includes a circuit board 10, a plurality of LED lamp beads 20, an optical PC cover 30, an inner plug 4 and an outer plug 50, wherein:

[0035] The multiple LED lamp beads 20 are installed on the circuit board 10, and the circuit board 10 is installed in the optical PC cover 30; the optical PC cover 30 has a light diffusion part 31 for diffusing the light emitted by the LED lamp beads 20, and the light diffusion part 31 can refract the light emitted by the LED lamp beads 20 for a second time to expand the lighting angle and range; the inner plug 4 is sealed at both ends of the optical PC cover 30, and the outer plug 50 is covered on the outside of the inner plug 4; the inner plug 4 and the outer plug 50 fully seal the two ends of the optical PC cover 30 to improve the waterproof level.

[0036] The optical PC cover 30 includes two side walls 32 and the light diffusion part 31. The light diffusion part 31 is arc-shaped and integrally located at the top of the two side walls 32. An upper limit plate 321 is symmetrically arranged on the inner upper part of the two side walls 32. A first receiving groove 33 for accommodating the circuit board 10 is formed between the upper limit plate 321 and the light diffusion part 31. The circuit board 10 is located in the first receiving groove 33, and the LED lamp bead 20 faces the light diffusion part 31. The first receiving groove 33 limits the circuit board 10 to prevent it from shaking. The inner plug 4 and the outer plug 50 are correspondingly provided with a threading hole 60 connected to the first receiving groove 33, so that the wire 70 can be inserted and welded to the end of the circuit board 10. The lower inner side of the two side walls 32 is symmetrically provided with a lower limit plate 322, and a second accommodating groove 34 is formed between the upper limit plate 321 and the lower limit plate 322. A radiator 80 for dissipating heat for the circuit board 10 is installed in the second accommodating groove 34. The top of the radiator 80 is in close contact with the lower surface of the circuit board 10 to fully absorb and dissipate the heat generated by the circuit board 10, thereby improving the overall heat dissipation efficiency of the LED light strip.

[0037] The radiator 80 is hollow inside, and a left embedding groove 35, a middle embedding groove 36 and a right embedding groove 37 are formed between the radiator 80 and the upper limit plate 321 and the lower limit plate 322; the inner plug 4 includes a surrounding edge 41 and a left embedding block 42, a middle embedding block 43, a right embedding block 44 located on the inner side of the surrounding edge 41, and an upper embedding block 45 adapted to the end of the first receiving groove 33, the left embedding block 42, the middle embedding block 43 and the right embedding block 44 are correspondingly located in the left embedding groove 35, the middle embedding groove 36 and the right embedding groove 37; the upper embedding block 45 is located at the end of the first receiving groove 33; by utilizing the cooperation of the embedding blocks and the embedding grooves, the inner plug 4 is fully combined with the optical PC cover 30, further improving the waterproofness and the stability of the overall structure.

[0038] The radiator 80 is provided with embedded ribs 81 on both sides, and embedded grooves 38 are provided on the upper limit plate 321 and the lower limit plate 322 respectively corresponding to the embedded ribs 81, and the embedded ribs 81 are embedded in the embedded grooves 38; and the lower surface of the radiator 80 has a plurality of heat dissipation ribs 82, and the heat dissipation ribs 82 are exposed outside the optical PC cover 30. The radiator 80 is made of a material with high thermal conductivity, such as copper or aluminum, to improve the heat conduction efficiency. The heat generated by the circuit board 10 and the LED lamp beads 20 can be effectively conducted and dissipated, thereby improving the heat dissipation efficiency and extending the service life of the LED light bar. The left embedded block 42, the middle embedded block 43 and the right embedded block 44 cooperate with the left embedded groove 35, the middle embedded groove 36 and the right embedded groove 37 to fully fix the radiator 80 sandwiched therein, so that the radiator 80 is firmly combined in the optical PC cover 30, and the tightness of the combination is improved to prevent moisture from entering.

[0039] The inner plug 4 includes a front matching portion 46 and a rear matching portion 47, the surrounding edge 41, the left embedded block 42, the middle embedded block 43, the right embedded block 44 and the upper embedded block 45 are all located on the front matching portion 46, the rear matching portion 47 is integrally connected to the rear end of the front matching portion 46, and limiting grooves 48 are respectively provided on both sides of the rear matching portion 47 for limiting the position with the mold during secondary injection molding; the outer plug 50 includes an integrally connected hollow front wrapping portion 51 and a rear wrapping portion 52, the front matching portion 46 is located in the front wrapping portion 51, the rear fitting portion 47 is located in the rear wrapping portion 52, and installation grooves 49 are respectively provided on the outer walls on both sides of the surrounding edge 41, and installation protrusions 53 are respectively provided on the inner walls on both sides of the front wrapping portion 51 corresponding to the installation grooves 49, and the installation protrusions 53 are embedded in the installation grooves 49. The rear wrapping portion 52 is provided with a hollow opening 54 corresponding to the upper limit groove 48 on the rear matching portion 47 (formed by avoiding the mold positioning structure at the limit groove 48 when the external plug 50 is injection-molded), and the limit groove 48 is exposed by the hollow opening 54.

[0040] The assembly process of the LED light strip is as follows: first, multiple LED lamp beads 20 and other electronic components are soldered on the circuit board 10 through solder paste; and the inner plug 4 is pre-injected separately, and then the wire 70 is passed through the threading hole 60 of the inner plug 4, and then soldered to one end of the circuit board 10 through tin wire. At this time, the circuit board 10 with the wire 70 soldered on one end is passed into the first accommodating groove 33 of the optical PC cover 30, and then the wire 70 at the other end of the circuit board 10 is soldered. After the welding is completed, the heat sink 80 is inserted into the second receiving groove 34 from the end of the optical PC cover 30 to make it fit tightly with the circuit board 10; the two ends of the optical PC cover 30 are inserted into the corresponding surrounding edges 41 of the inner plug 4 to limit the optical PC cover 30 and prevent it from shaking; then the semi-finished product with the inner plug 4 installed is put into the injection mold, and the limiting groove 48 of the inner plug 4 is aligned with the mold clamping position to limit it so that it cannot slide back and forth; finally, the semi-finished product with the optical PC cover 30, the circuit board 10, the heat sink 80 and the inner plug 4 is installed. The two ends of the product are encapsulated and injection molded with glue (or other resin glue) (external plug 50) to form an integral product. The external plug 50 is completely covered on the outside of the internal plug 4, so that the two ends of the LED light strip form a closed structure, and the circuit board 10 is completely sealed from the outside, thereby achieving both optical diffusion effect and high waterproof effect. In addition, the extruded optical PC cover 30 has no limit on length and can be cut to length as required by the application without splicing. It can be widely used in LED advertising light boxes 90 and contour decorative lighting fields.

[0041] A light box 90 includes a plurality of LED light strips, a box body 91 and a plurality of rotation adjustment seats 92 installed in the box body 91, wherein the rotation adjustment seat 92 includes a support seat 93 and a connection seat 94, wherein the connection seat 94 is hinged on the support seat 93, and an elastic latch structure 95 for positioning the rotation angle of the connection seat 94 is provided at the hinge between the connection seat 94 and the support seat 93; the optical PC cover 30 is provided with connection recesses 39 on both sides, and connection protrusions 96 are provided on the inner walls on both sides of the connection seat 94 corresponding to the connection recesses 39, and the connection protrusions 96 are embedded in the connection recesses 39. A connection line 97 that can be bent to adjust the distance between adjacent rotation adjustment seats 92 is connected between two adjacent rotation adjustment seats 92, and in this embodiment, the connection line 97 is a steel wire.

[0042] The LED light bar and light box 90 have the following advantages:

[0043] First, the light-transmitting surface of the optical PC cover 30 is designed with a secondary light distribution non-curved surface, so that the light emitted by the LED lamp beads 20 can be refractionated through the optical PC cover 30, so that the irradiation area is larger. In addition, the optical PC cover 30 is processed by extrusion technology, and its length can be set as needed, and can be cut as needed according to the application length.

[0044] Second, it has an inner plug 4 design, on which a rim 41 and a limit plate are provided. The optical PC cover 30 is first covered by the rim 41 of the inner plug 4 to achieve sealing of both ends of the optical PC cover 30, so as to prepare the limit in advance for the subsequent secondary injection molding of the outer plug 50 for full plastic encapsulation, which is convenient for injection molding.

[0045] Third, the inner plug 4 is provided with limit grooves 48 on both sides, so that when the semi-finished product with the inner plug 4 installed is put into the injection mold, the limit grooves 48 on the left and right sides correspond to the bosses of the upper mold and the lower mold of the mold, so as to achieve precise limiting. When the outer plug 50 is injected for the second time, the product will not move due to the injection impact force, thereby improving the injection accuracy.

[0046] Fourth, the optical PC cover 30 is formed with a first accommodating groove 33, and the circuit board 10 with the LE lamp beads attached is accurately inserted into the first accommodating groove 33 so that it cannot shake up and down or left and right, thereby achieving precise positioning.

[0047] Fifth, fully plastic-wrapped external plugs 50 are provided at both ends of the product. The external plugs 50 are injection-molded by fluid rubber material to perform secondary sealing of the internal plug 4, the optical PC cover 30, the wire 70 and the radiator 80 into one body, thereby achieving a waterproof effect.

[0048] Sixth, the extruded integrated optical PC cover 30 is used to cooperate with the LED lamp beads 20 to produce light refraction, so that the LED light bar has the effect of diffusing light; in the application, the light box 90 with the same area can be illuminated by using fewer LED light bars, and there is no shadow between the LED light bars, thereby reducing product costs, installation costs and energy costs. Secondly, the structural design of the integrated optical PC cover 30 and the internal and external plugs 50 also enhances the waterproof level of the product.

[0049] Seventh, the product is easy to install, disassemble and repair and replace the light bar with problems later. The main implementation method is that the product is designed with a special rotating adjustment seat 92. First, the support seat 93 is fixed on the back plate of the light box 90 by passing the screw 98 through the mounting hole on the support seat 93; when fixing, the spacing can be adjusted by bending the steel wire connected between the two adjacent rotating adjustment seats 92, and then the finished LED light bar is installed in the rotating adjustment seat 92. Specifically, the optical PC cover 30 is fixed on the rotating adjustment seat 92 by aligning the connecting recess 39 of the optical PC cover 30 with the connecting protrusion 96 of the connecting seat 94; because the connecting seat 94 is a U-shaped design, the two side walls 32 have a certain elasticity and can be stretched outward. When it needs to be repaired and disassembled, it is only necessary to pull out the optical PC cover 30 with force, which is quick and convenient. In addition, the connecting seat 94 can be rotated relative to the supporting seat 93 to adjust the illumination angle of the LED light bar to meet the needs of different illumination environments. The elastic latch structure 95 is a toothed disc (elastic material) that can rotate relative to each other by friction and mesh with each other. In the absence of external force, the elastic latch structure 95 can maintain the relative angle between the connecting seat 94 and the supporting seat 93 unchanged under the meshing action of its own latch teeth, thereby playing a role in fixing the angle.

[0050] The design focus of the present invention is that the LED light strip has a light diffusion function. When designing its optical PC cover, a secondary optical light distribution design is performed on its light-transmitting surface. The optical PC cover refracts the light emitted by the LED lamp for a second time, expands the illumination angle of the LED lamp beads themselves, makes their illumination area larger, and fully utilizes the light emission of the LED lamp beads. In addition, inner plugs and outer plugs are provided at both ends of the LED light strip. The function of the inner plug is to preliminarily combine the circuit board, optical PC cover, wire and radiator into a whole, and then completely seal it through the injection molding and rubber-coated outer plug to achieve a waterproof effect and extend the service life.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the technical scope of the present invention. Therefore, any slight modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An LED light strip with light diffusion function, characterized in that: It includes a circuit board, a plurality of LED lamp beads, an optical PC cover, an inner plug and an outer plug, wherein the plurality of LED lamp beads are mounted on the circuit board, and the circuit board is mounted in the optical PC cover; The optical PC cover has a light diffusion part for diffusing the light emitted by the LED lamp beads; the inner plug is sealed at both ends of the optical PC cover, and the outer plug is covered on the outside of the inner plug.

2. The LED light strip with light diffusion function according to claim 1, characterized in that: The optical PC cover includes two side walls and the light diffusion part. The light diffusion part is arc-shaped and integrally located on the top of the two side walls. Upper limit plates are symmetrically arranged on the upper inner sides of the two side walls. A first accommodating groove for accommodating the circuit board is formed between the upper limit plate and the light diffusion part. The circuit board is located in the first accommodating groove, and the LED lamp beads face the light diffusion part.

3. The LED light strip with light diffusion function according to claim 2, characterized in that: The lower inner side of the two side walls is symmetrically provided with a lower limit plate, a second accommodating groove is formed between the upper limit plate and the lower limit plate, a radiator for dissipating heat for the circuit board is installed in the second accommodating groove, and the top of the radiator is in close contact with the lower surface of the circuit board.

4. The LED light strip with light diffusion function according to claim 3, characterized in that: The interior of the radiator is hollow, and a left embedding groove, a middle embedding groove and a right embedding groove are formed between the radiator and the upper limit plate and the lower limit plate; the inner plug includes a surrounding edge and a left embedding block, a middle embedding block, a right embedding block located inside the surrounding edge, and an upper embedding block adapted to the end of the first accommodating groove, and the left embedding block, the middle embedding block and the right embedding block are correspondingly located in the left embedding groove, the middle embedding groove and the right embedding groove; the upper embedding block is located at the end of the first accommodating groove.

5. The LED light strip with light diffusion function according to claim 3, characterized in that: Embedded ribs are respectively arranged on both sides of the radiator, and embedded grooves are respectively arranged on the upper limit plate and the lower limit plate corresponding to the embedded ribs, and the embedded ribs are embedded in the embedded grooves; and the lower surface of the radiator has a plurality of heat dissipation ribs, and the heat dissipation ribs are exposed on the outside of the optical PC cover.

6. The LED light strip with light diffusion function according to claim 4, characterized in that: The inner plug includes a front mating part and a rear mating part, the surrounding edge, left embedded block, middle embedded block, right embedded block and upper embedded block are all located on the front mating part, the rear mating part is integrally connected to the rear end of the front mating part, and limiting grooves are respectively arranged on both sides of the rear mating part; the outer plug includes an integrally connected hollow front wrapping part and a rear wrapping part, the front mating part is located in the front wrapping part, the rear mating part is located in the rear wrapping part, and installation grooves are respectively arranged on the outer walls on both sides of the surrounding edge, and installation protrusions are respectively arranged on the inner walls on both sides of the front wrapping part corresponding to the installation grooves, and the installation protrusions are embedded in the installation grooves.

7. The LED light strip with light diffusion function according to claim 6, characterized in that: A hollow opening is provided on the rear wrapping portion corresponding to the upper limit groove on the rear matching portion, and the limit groove is exposed from the hollow opening.

8. The LED light strip with light diffusion function according to claim 2, characterized in that: The inner plug and the outer plug are correspondingly provided with threading holes which are connected with the first containing groove.

9. A light box, using the LED light strip according to any one of claims 1 to 8, characterized in that: It also includes a box body and a plurality of rotating adjustment seats installed in the box body, the rotating adjustment seat includes a supporting seat and a connecting seat, the connecting seat is hinged on the supporting seat, and an elastic tooth structure for positioning the rotation angle of the connecting seat is arranged at the hinge between the connecting seat and the supporting seat; connecting recesses are respectively arranged on both sides of the optical PC cover, and connecting protrusions are respectively arranged on the inner walls on both sides of the connecting seat corresponding to the connecting recesses, and the connecting protrusions are embedded in the connecting recesses.

10. The light box according to claim 9, characterized in that: A connecting line which can be bent to adjust the distance between the adjacent rotation adjustment seats is connected between two adjacent rotation adjustment seats.

Images