Lamp box facilitating maintenance of lamp bar

Abstract

The invention provides a lamp box convenient for lamp strip maintenance, which comprises a box body, a diffusion plate, connecting brackets, a fixing plate and an LED lamp strip, the diffusion plate is arranged in the box body and seals a light outlet, two ends of the fixing plate are respectively connected with the box body through one connecting bracket, the fixing plate is positioned at a mounting port of the box body, and the LED lamp strip is arranged on the fixing plate. The connecting support comprises a first rotating shaft, a first connecting plate, a second connecting plate and a telescopic part, the telescopic part is connected between the first connecting plate and the second connecting plate, the first connecting plate is rotationally connected around the first rotating shaft, the second connecting plate is fixedly connected with the fixing plate, and the telescopic direction of the telescopic part is perpendicular to the axial direction of the first rotating shaft. According to the lamp box facilitating maintenance of the lamp strip, the fixing plate can move to extend out of the box body or retract into the box body through the telescopic piece, and meanwhile the fixing plate can rotate around the first rotating shaft, so that the LED lamp strip on the fixing plate faces the direction of an operator, and the LED lamp strip is very convenient to maintain and replace.

Description

Technical Field

[0001] The invention relates to the field of light boxes, and in particular to a light box which is convenient for repairing light strips. Background Art

[0002] As the requirements for LED lighting and outdoor lighting become higher and higher, the frequency and power of LED light strips are also increasing, which increases the probability of damage to LED light strips, causing lighting equipment and advertising poster boxes that use multiple LED light strips to be unable to work properly. Even if they are repaired or replaced, professionals are required to disassemble the entire product for repair and replacement, which is very inconvenient and costly.

[0003] Therefore, it is necessary to provide a light box that is convenient for light bar maintenance to solve the above technical problems. Summary of the invention

[0004] The present invention provides a light box which is convenient for light bar maintenance, so as to solve the problem that the light box maintenance in the prior art is very inconvenient and has high maintenance cost.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a light box that is convenient for light bar maintenance, comprising: a box body, a diffusion plate, a connecting bracket, a fixing plate, and an LED light bar, one side of the box body is a light outlet, a mounting port is provided on a side of the box body adjacent to the light outlet, the diffusion plate is provided in the box body and closes the light outlet, both ends of the fixing plate are connected to the inner wall of the box body through one of the connecting brackets respectively, the fixing plate is located at the mounting port, and the LED light bar is provided on the fixing plate;

[0006] The connecting bracket includes a first rotating shaft, a first connecting plate, a second connecting plate, and a telescopic member, the first rotating shaft is fixedly connected to the inner wall of the box body, the telescopic member is connected between the first connecting plate and the second connecting plate, the first connecting plate is rotatably connected around the first rotating shaft, the second connecting plate is fixedly connected to the fixed plate, the axial direction of the first rotating shaft is consistent with the extension direction of the LED light strip, and the telescopic direction of the telescopic member is perpendicular to the axial direction of the first rotating shaft;

[0007] The track of the fixed plate rotating around the first rotating shaft includes a light supply position and a mounting position, and the track of the fixed plate extending and retracting with the retractable member includes an inward retracting position and an extended position;

[0008] When the fixing plate is located at the light-supplying position and the retracted position at the same time, the LED light strip is located inside the box and shines light in the direction of the diffusion plate; when the fixing plate is located at the installation position and the extended position at the same time, the LED light strip extends out of the installation opening and faces the external space of the installation opening.

[0009] In the present invention, the connecting bracket also includes a spring and an elastic gasket, the spring and the elastic gasket are sleeved on the first rotating shaft, the spring is compressed and arranged between the inner wall of the box body and the elastic gasket, and the elastic gasket is in surface contact with the side of the first connecting plate.

[0010] In the present invention, the telescopic member includes a first hinge plate and a second hinge plate, the first hinge plate and the second hinge plate form a damped rotation connection around a second rotating axis, one end of the first hinge plate away from the second hinge plate forms a damped rotation connection with the first connecting plate around a third rotating axis, one end of the second hinge plate away from the first hinge plate forms a damped rotation connection with the second connecting plate around a fourth rotating axis, the second rotating axis, the third rotating axis, and the fourth rotating axis are parallel, and the second rotating axis is perpendicular to the first rotating axis.

[0011] Among them, the first connecting plate includes a first plate body and a second plate body connected to form an L-shaped structure, the first plate body is rotatably connected to the first rotating shaft, the second plate body is connected to the first hinge plate, and the second connecting plate is provided with a folding angle of 165°-175°, and the convex side of the folding angle is close to the fixed plate.

[0012] In the present invention, the light box that is easy to repair the light strip also includes a connecting terminal, and the connecting terminal is provided with a power connecting spring sheet, and the power connecting spring sheet includes an elastic sheet, a connecting sheet, a first curved sheet and a second curved sheet, and the connecting sheet is connected to one side of the connecting terminal, the first curved sheet is connected between the elastic sheet and the connecting sheet, the first curved sheet is bent and extended in a direction away from the connecting terminal, the second curved sheet is connected to one end of the elastic sheet away from the first curved sheet, and the side of the second curved sheet away from the connecting sheet is an outer convex surface for electrically connecting to the LED light strip.

[0013] Furthermore, the light box for facilitating maintenance of the light strip also includes a limit block, the connecting terminal and the limit block are stacked on the fixed plate, the limit block is located between the connecting terminal and the fixed plate, one end of the connecting terminal protrudes from the limit block, the power connecting spring is located at the end of the connecting terminal protruding from the limit block, and the end face of the LED light strip is in contact with the limit block.

[0014] Wherein, the limit block is connected to the second connecting plate, a slide groove is provided on the fixing plate, the extension direction of the slide groove is consistent with the extension direction of the LED light strip, and the limit block is slidably connected to the slide groove;

[0015] The connecting bracket also includes a limit plate, which is fixedly connected to the first rotating shaft, and the limit plate is located on a side of the first connecting plate away from the elastic gasket. The first connecting plate is provided with an annular groove on a side facing the limit plate, and two first protrusions are symmetrically arranged in the annular groove with a set radial line as a symmetry axis. A second protrusion is provided at a position of the limit plate corresponding to the annular groove, and an inclined surface is provided on a side where the first protrusion and the second protrusion are close to each other, and the inclined surface facilitates the first protrusion and the second protrusion to squeeze each other to form a laminated structure;

[0016] The installation position includes an inspection position and a replacement position. The fixing plate rotates from the light supply position in one direction to reach the inspection position, and rotates from the light supply position in the opposite direction to reach the replacement position.

[0017] When the fixing plate is located at the inspection position and the light supply position, the second protrusion is located in the annular groove, the distance between the two limit blocks at both ends is equal to the length of the LED light strip, and the end surface of the LED light strip is in contact with the limit block;

[0018] When the fixing plate is located at the replacement position, the second protrusion is stacked on the first protrusion, and the distance between the two limiting blocks at both ends is greater than the length of the LED light strip, thereby facilitating the disassembly and assembly of the LED light strip.

[0019] In addition, the power connecting spring of the connecting terminal includes a positive power connecting spring and two negative power connecting springs respectively located on both sides of the positive power connecting spring. A positive power connecting pin and two negative power connecting pins are arranged at both ends of the LED light strip. The two negative power connecting pins are symmetrically arranged on both sides of the positive power connecting pin. The positive power connecting spring is electrically connected to the positive power connecting pin, and the two negative power connecting springs are electrically connected to the two negative power connecting pins one by one.

[0020] In the present invention, a buckle groove is provided on the outer side surface of the box body where the installation port is provided, and the buckle groove is communicated with the installation port. When the fixing plate is installed in the installation port, the end surface of the fixing plate is exposed in the buckle groove.

[0021] In the present invention, a positioning strip for positioning the LED light strip is provided on the fixing plate.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows: the fixing plate of the light box for easy maintenance of the light strip of the present invention can be extended out of the box body or retracted into the box body by means of a telescopic member, and at the same time the fixing plate can be rotated around the first rotating axis so that the LED light strip on the fixing plate faces the direction of the operator, which makes it very convenient to repair and replace the LED light strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the present invention.

[0024] Figure 1 This is one of the exploded structural schematic diagrams of the light box for easy maintenance of the light strip according to the present invention.

[0025] Figure 2 This is the second schematic diagram of the exploded structure of the light box for easy maintenance of the light strip according to the present invention.

[0026] Figure 3 The cross-sectional view of the light box for facilitating maintenance of the light strip according to the present invention.

[0027] Figure 4 for Figure 3 Enlarged view of the local structure at X in the middle.

[0028] Figure 5 It is a schematic structural diagram of the first connecting plate and the limiting plate for facilitating quick replacement of the light bar of the present invention.

[0029] Figure 6 It is a schematic diagram of the structure of the connection terminal of the present invention which is convenient for quickly replacing the light bar.

[0030] Figure 7 for Figure 6 Bottom view of the connecting terminal.

[0031] Figure 8 The diagram is a partial structural diagram of an LED light bar for facilitating quick replacement of the light bar according to the present invention. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0033] The directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only for reference to the orientation of the drawings. The directional terms used are used to illustrate and understand the present invention, but not to limit the present invention.

[0034] The terms "first", "second", etc. in the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be used as a limitation on the order of precedence.

[0035] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, the connection can be a detachable connection or a connection of an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the prior art, when the LED light strip of the light box is damaged and needs to be repaired or replaced, professionals need to dismantle the entire product for repair and replacement, which is very inconvenient and has high repair costs.

[0037] The following is a preferred embodiment of a light box that is convenient for light bar maintenance and can solve the above technical problems, provided by the present invention.

[0038] Please refer to Figure 1 , Figure 2 as well as Figure 3 In the figures, units with similar structures are represented by the same reference numerals.

[0039] The present invention provides a light box that is convenient for light bar maintenance, comprising: a box body 1, a diffusion plate 13, a connecting bracket 2, a fixing plate 3, and an LED light bar 4. One side of the box body 1 is a light outlet, a mounting opening is provided on one side of the box body 1 adjacent to the light outlet, the diffusion plate 13 is closed and arranged on the light outlet, both ends of the fixing plate 3 are respectively connected to the inner wall of the box body 1 through a connecting bracket 2, the fixing plate 3 is located at the mounting opening, and the LED light bar 4 is arranged on the fixing plate 3.

[0040] Please refer to Figure 4 The connecting bracket 2 includes a first rotating shaft 21, a first connecting plate 22, a second connecting plate 23, and a telescopic member. The first rotating shaft 21 is fixedly connected to the inner wall of the box body 1, and the telescopic member is connected between the first connecting plate 22 and the second connecting plate 23. The first connecting plate 22 is rotatably connected around the first rotating shaft 21, and the second connecting plate 23 is fixedly connected to the fixed plate 3. The axial direction of the first rotating shaft 21 is consistent with the extension direction of the LED light strip 4, and the telescopic direction of the telescopic member is perpendicular to the axial direction of the first rotating shaft 21.

[0041] The track of the fixed plate 3 rotating around the first rotating shaft 21 includes a light supply position and a mounting position, and the track of the fixed plate 3 extending and retracting along with the telescopic member includes an inward retracting position and an extended position.

[0042] When the fixing plate 3 is in the light supply position and the retracted position, the LED light bar 4 is in the box body 1 and shines light in the direction of the diffusion plate 13, that is, the LED light bar 4 is encapsulated inside the box body 1 and can emit light through the diffusion plate 13. When the fixing plate 3 is in the installation position and the extended position, the LED light bar 4 extends out of the installation opening and faces the external space of the installation opening, that is, the LED light bar 4 can face the direction of the operator, which is very convenient for the operator to repair and replace the LED light bar.

[0043] Please refer to Figure 4 In this embodiment, the connecting bracket 2 also includes a spring 29 and an elastic gasket 2A (the elastic gasket 2A can be made of rubber or plastic). The spring 29 and the elastic gasket 2A are sleeved on the first rotating shaft 21. The spring 29 is compressed and arranged between the inner wall of the box body 1 and the elastic gasket 2A. The elastic gasket 2A is in surface contact with the side of the first connecting plate 22.

[0044] In this way, the spring 29 squeezes the elastic gasket 2A, so that friction is generated between the elastic gasket 2A and the first connecting plate 22. When the first connecting plate 22 rotates to a set position, it can be maintained at the set rotation position by the friction, so that the position of the fixed plate 3 is more stable.

[0045] Among them, the first rotating shaft 21 can be directly connected to the inner wall of the box body, or the first rotating shaft 21 can be fixedly connected to the inner wall of the box body 1 through the support member 2D. The support member 2D can be locked on the first rotating shaft 21 through two nut members 2C, and a convex-concave fit can be set between the support member 2D and the first rotating shaft 21, so that the first rotating shaft 21 is fixed and cannot rotate relative to the support member.

[0046] In addition, a positioning groove can be axially arranged on the circumferential side of the first rotating shaft 21, and a positioning protrusion that cooperates with the positioning groove is arranged on the inner side of the elastic gasket 2A. The elastic gasket 2A is limited to rotate around the first rotating shaft 21 through the cooperation between the positioning protrusion and the positioning groove, so that the elastic gasket 2A can contact the first connecting plate 22 to generate friction, thereby limiting the rotation of the first connecting plate 22.

[0047] Please refer to Figure 4In this embodiment, the telescopic member specifically includes a first hinge plate 24 and a second hinge plate 25, the first hinge plate 24 and the second hinge plate 25 form a damped rotation connection around a second rotating shaft 26, one end of the first hinge plate 24 away from the second hinge plate 25 forms a damped rotation connection with the first connecting plate 22 around a third rotating shaft 27, one end of the second hinge plate 25 away from the first hinge plate 24 forms a damped rotation connection with the second connecting plate 23 around a fourth rotating shaft 28, the second rotating shaft 26, the third rotating shaft 27, and the fourth rotating shaft 28 are parallel, and the second rotating shaft 26 is perpendicular to the first rotating shaft 21. In this way, the fixed plate 3 can be extended out of the installation port by rotating the first hinge plate 24 and the second hinge plate 25. The damped rotation of the second rotating shaft 26, the third rotating shaft 27, and the fourth rotating shaft 28 allows the fixed plate 3 to remain in a set position after being moved.

[0048] In this embodiment, the first connecting plate 22 includes a first plate body and a second plate body connected in an L-shaped structure, the first plate body is rotatably connected to the first rotating shaft 21, and the second plate body is connected to the first hinge plate 24, which is convenient to connect and compact in structure. The second connecting plate 23 is provided with a 165°-175° angle, and the convex side of the angle is close to the fixed plate 3, and the angle is changed to facilitate a more suitable installation connection with the installation port.

[0049] Please refer to Figure 4-Figure 7 The light box for quick replacement of the light bar 4 in this embodiment also includes a connection terminal 5, on which a power connection spring is arranged, and the power connection spring includes an elastic piece 511, a connecting piece 514, a first curved piece 512 and a second curved piece 513, the connecting piece 514 is connected to one side of the connection terminal, the first curved piece 512 is connected between the elastic piece 511 and the connecting piece 514, the first curved piece 512 is bent and extended in a direction away from the connection terminal, the second curved piece 513 is connected to one end of the elastic piece 511 away from the first curved piece 512, and the side of the second curved piece 513 away from the connecting piece 514 is an outer convex surface for electrical connection with the LED light bar 4. It is very convenient to install and connect with the LED light bar 4, and the electrical connection is very stable.

[0050] The light box for facilitating quick replacement of the light strip 4 in this embodiment further comprises a limit block 6. The connecting terminal 5 and the limit block 6 are stacked on the fixing plate 3. The limit block 6 is located between the connecting terminal 5 and the fixing plate 3. One end of the connecting terminal 5 protrudes from the limit block 6. The power connection spring is located at the end of the connecting terminal 5 protruding from the limit block 6. The end face of the LED light strip 4 contacts the limit block 6, so that the position of the LED light strip 4 is stable and the electrical contact with the power connection spring is stable.

[0051] Please refer to Figure 1 , Figure 4 as well as Figure 5In this embodiment, the limit block 6 is connected to the second connecting plate 23, and a slide groove 32 is provided on the fixed plate 3. The extension direction of the slide groove 32 is consistent with the extension direction of the LED light strip 4. The limit block 6 is slidably connected to the slide groove 32, so that the distance between the limit blocks 6 at both ends can be adjusted by sliding to adjust the restriction on the LED light strip 4.

[0052] Among them, the connecting bracket 2 also includes a limit plate 2B, which is fixedly connected to the first rotating shaft 21. The limit plate 2B is located on the side of the first connecting plate 22 away from the elastic gasket 2A. A ring groove 221 is provided on the side of the first connecting plate 22 opposite to the limit plate 2B. Two first protrusions 222 are symmetrically arranged in the ring groove 221 with a set radial line as the symmetry axis. A second protrusion 2B1 is provided at a position corresponding to the ring groove 221 on the limit plate 2B. The first protrusion 222 and the second protrusion 2B1 are close to each other. The side is provided with an inclined surface, which is conducive to the first protrusion 222 and the second protrusion 2B1 to squeeze each other to form a stacked structure. When the second protrusion 2B1 moves from the ring groove 221 to switch to stacking with the first protrusion 222, the distance between the two limit blocks 6 at both ends will change.

[0053] The installation position includes an inspection position and a replacement position. The fixed plate 3 rotates from the light supply position in one direction to reach the inspection position, and rotates from the light supply position in the opposite direction to reach the replacement position. That is, the fixed plate 3 rotates in two opposite directions to reach the inspection position and the replacement position respectively.

[0054] When the fixing plate 3 is located at the inspection position and the light supply position, the second protrusion 2B1 is located in the annular groove 221, the distance between the two limit blocks 6 at both ends is equal to the length of the LED light bar 4, and the end surface of the LED light bar 4 contacts the limit blocks 6. The spring 29 will squeeze the first connecting plate 22 to form a more stable matching structure with the limit plate 2B. When the fixing plate 3 is rotated to the inspection position, the LED light bar does not need to be disassembled, so the limit blocks 6 maintain the positioning limit of the LED light bar 4.

[0055] When the fixing plate 3 is in the replacement position, the second protrusion 2B1 is stacked on the first protrusion 222, so that the second protrusion 2B1 squeezes the first connecting plate 22 to move a certain distance toward the spring 29, and the first connecting plate 22 drives the limit block 6 to slide through the telescopic member, so that the distance between the two limit blocks 6 at both ends is greater than the length of the LED light bar 4, thereby facilitating the disassembly and assembly of the LED light bar 4. When the fixing plate 3 is rotated to the replacement position, the LED light bar generally needs to be disassembled and assembled, so the distance between the limit blocks 6 at both ends will be expanded, and the positioning restriction on the LED light bar 4 will be released.

[0056] When the fixed plate 3 rotates in different directions like this, it can be convenient to carry out different inspections or replacement operations. Wherein, it can also be marked on the appearance of the fixed plate 3 to indicate which direction to rotate to reach the inspection position or arrive at the replacement position.

[0057] Please refer to Figure 6 and Figure 8 In addition, the power-connecting springs of the connection terminal 5 include a positive power-connecting spring 51 and two negative power-connecting springs 52 respectively located on both sides of the positive power-connecting spring 51. A positive power-connecting pin 41 and two negative power-connecting pins 42 are arranged at both ends of the LED light bar 4. The two negative power-connecting pins 42 are symmetrically arranged on both sides of the positive power-connecting pin 41. The positive power-connecting spring 51 is electrically connected to the positive power-connecting pin 41, and the two negative power-connecting springs 52 are electrically connected to the two negative power-connecting pins 42 one by one. In this way, the connection terminal 5 and the LED light bar 4 can be electrically connected in both forward and reverse installation, and the blind plug assembly of the LED light bar 4 can be realized, and the assembly operation is very convenient.

[0058] Please refer to Figure 2 The box body 1 in this embodiment includes a frame 11, a plug 12, a back plate 15, and a transparent plate 14. The four frames 11 are connected by the plug 12 to form a frame structure. The assembled box structure is convenient for the arrangement of internal components. The back plate 15 and the transparent plate 14 are respectively encapsulated and arranged on the openings on both sides of the frame structure.

[0059] It can be understood that the location of the transparent plate 14 is the light outlet, and the diffusion plate 13 is located on the inner side of the transparent plate 14 .

[0060] Please refer to Figure 4 , wherein the installation port is arranged on one of the frames 11, and a buckle groove 111 is arranged on the outer surface of the frame 11 where the installation port is located, and the buckle groove 111 is communicated with the installation port. When the fixing plate 3 is installed in the installation port, the end surface of the fixing plate 3 is exposed in the buckle groove 111, which is convenient for the operator to pull out the fixing plate 3 from the buckle groove 111 for maintenance operations.

[0061] Please refer to Figure 1 In this embodiment, a positioning strip 31 for positioning the LED light strip 4 is provided on the fixing plate 3 to facilitate the positioning and installation of the LED light strip 4 .

[0062] When the light box of the embodiment that facilitates light bar maintenance needs to be repaired and replaced with an LED light bar, the operator only needs to apply force to the fixing plate 3 from the buckle slot 111, and the first hinge plate 24 and the second hinge plate 25 rotate by overcoming the damping force of the second rotating shaft 26, the third rotating shaft 27, and the fourth rotating shaft 28, so that the fixing plate 3 can be pulled out of the installation opening. Then the fixing plate 3 can be controlled to rotate around the first rotating shaft 21, so that the LED light bar 4 faces the direction of the operator, which is very convenient for the operator to repair and replace the LED light bar.

[0063] When the fixed plate 3 is controlled to rotate around the first rotating shaft 21, it should be noted that rotating in different directions will reach the inspection position or the replacement position. When the fixed plate 3 is rotated to the inspection position, the distance between the two limit blocks 6 at both ends is equal to the length of the LED light bar 4, and the end face of the LED light bar 4 contacts the limit blocks 6. At this time, it is suitable for inspecting the LED light bar 4, but it is not convenient to disassemble and assemble the LED light bar 4. When the fixed plate 3 is rotated to the replacement position, the distance between the two limit blocks 6 at both ends is greater than the length of the LED light bar 4, so that it is convenient to disassemble and replace the damaged LED light bar 4.

[0064] After the maintenance and replacement is completed, the fixing plate 3 is controlled to rotate and move until it is closed to the installation opening.

[0065] This completes the disassembly and assembly process of the light box that is convenient for light bar maintenance when repairing the LED light bar in this embodiment.

[0066] In a preferred embodiment of the present invention, a fixing plate of a light box which is convenient for repairing light strips can be moved by a telescopic member to extend out of the box or retract into the box. At the same time, the fixing plate can be rotated around a first rotating axis so that the LED light strip on the fixing plate faces the direction of the operator. This makes it very convenient to repair and replace the LED light strip.

[0067] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A light box that facilitates the maintenance of light strips, characterized in that: include: A box, a diffusion plate, a connecting bracket, a fixing plate, and an LED light strip, wherein one side of the box is a light outlet, a mounting opening is provided on a side of the box adjacent to the light outlet, the diffusion plate is provided in the box and closes the light outlet, both ends of the fixing plate are connected to the inner wall of the box through one of the connecting brackets respectively, the fixing plate is located at the mounting opening, and the LED light strip is provided on the fixing plate; The connecting bracket includes a first rotating shaft, a first connecting plate, a second connecting plate, and a telescopic member, the first rotating shaft is fixedly connected to the inner wall of the box body, the telescopic member is connected between the first connecting plate and the second connecting plate, the first connecting plate is rotatably connected around the first rotating shaft, the second connecting plate is fixedly connected to the fixed plate, the axial direction of the first rotating shaft is consistent with the extension direction of the LED light strip, and the telescopic direction of the telescopic member is perpendicular to the axial direction of the first rotating shaft; The track of the fixed plate rotating around the first rotating shaft includes a light supply position and a mounting position, and the track of the fixed plate extending and retracting with the retractable member includes an inward retracting position and an extended position; When the fixing plate is located at the light-supplying position and the retracted position at the same time, the LED light strip is located inside the box and shines light in the direction of the diffusion plate; when the fixing plate is located at the installation position and the extended position at the same time, the LED light strip extends out of the installation opening and faces the external space of the installation opening.

2. The light box for facilitating light bar maintenance according to claim 1, characterized in that: The connecting bracket also includes a spring and an elastic gasket, which are sleeved on the first rotating shaft. The spring is compressed and arranged between the inner wall of the box body and the elastic gasket, and the elastic gasket is in surface contact with the side surface of the first connecting plate.

3. The light box for facilitating light bar maintenance according to claim 2, characterized in that: The telescopic member includes a first hinge plate and a second hinge plate, the first hinge plate and the second hinge plate form a damped rotation connection around a second rotating axis, one end of the first hinge plate away from the second hinge plate forms a damped rotation connection with the first connecting plate around a third rotating axis, one end of the second hinge plate away from the first hinge plate forms a damped rotation connection with the second connecting plate around a fourth rotating axis, the second rotating axis, the third rotating axis, and the fourth rotating axis are parallel, and the second rotating axis is perpendicular to the first rotating axis.

4. The light box for facilitating light bar maintenance according to claim 3, characterized in that: The first connecting plate includes a first plate body and a second plate body connected to form an L-shaped structure, the first plate body is rotatably connected to the first rotating shaft, the second plate body is connected to the first hinge plate, and the second connecting plate is provided with a folding angle of 165°-175°, and the convex side of the folding angle is close to the fixed plate.

5. The light box for facilitating light bar maintenance according to claim 3, characterized in that: The light box that is easy to repair the light strip also includes a connecting terminal, and the connecting terminal is provided with a power connection spring sheet, and the power connection spring sheet includes an elastic sheet, a connecting sheet, a first curved sheet and a second curved sheet, and the connecting sheet is connected to one side of the connecting terminal, the first curved sheet is connected between the elastic sheet and the connecting sheet, the first curved sheet is bent and extended in a direction away from the connecting terminal, the second curved sheet is connected to one end of the elastic sheet away from the first curved sheet, and the side of the second curved sheet away from the connecting sheet is an outer convex surface for electrically connecting to the LED light strip.

6. The light box for facilitating light bar maintenance according to claim 5, characterized in that: The light box that is convenient for light strip maintenance also includes a limit block, the connecting terminal and the limit block are stacked on the fixed plate, the limit block is located between the connecting terminal and the fixed plate, one end of the connecting terminal protrudes from the limit block, the power connecting spring is located at the end of the connecting terminal protruding from the limit block, and the end face of the LED light strip is in contact with the limit block.

7. The light box for facilitating light bar maintenance according to claim 6, characterized in that: The limit block is connected to the second connecting plate, a slide groove is provided on the fixing plate, the extension direction of the slide groove is consistent with the extension direction of the LED light strip, and the limit block is slidably connected to the slide groove; The connecting bracket also includes a limit plate, which is fixedly connected to the first rotating shaft, and the limit plate is located on a side of the first connecting plate away from the elastic gasket. The first connecting plate is provided with an annular groove on a side facing the limit plate, and two first protrusions are symmetrically arranged in the annular groove with a set radial line as a symmetry axis. A second protrusion is provided at a position of the limit plate corresponding to the annular groove, and an inclined surface is provided on a side where the first protrusion and the second protrusion are close to each other, and the inclined surface facilitates the first protrusion and the second protrusion to squeeze each other to form a laminated structure; The installation position includes an inspection position and a replacement position. The fixing plate rotates from the light supply position in one direction to reach the inspection position, and rotates from the light supply position in the opposite direction to reach the replacement position. When the fixing plate is located at the inspection position and the light supply position, the second protrusion is located in the annular groove, the distance between the two limit blocks at both ends is equal to the length of the LED light strip, and the end surface of the LED light strip is in contact with the limit block; When the fixing plate is located at the replacement position, the second protrusion is stacked on the first protrusion, and the distance between the two limiting blocks at both ends is greater than the length of the LED light strip, thereby facilitating the disassembly and assembly of the LED light strip.

8. The light box for facilitating light bar maintenance according to claim 5 or 6, characterized in that: The power connection spring of the connecting terminal includes a positive power connection spring and two negative power connection springs respectively located on both sides of the positive power connection spring. A positive power connection pin and two negative power connection pins are arranged at both ends of the LED light strip. The two negative power connection pins are symmetrically arranged on both sides of the positive power connection pin. The positive power connection spring is electrically connected to the positive power connection pin, and the two negative power connection springs are electrically connected to the two negative power connection pins one by one.

9. The light box for facilitating light bar maintenance according to claim 1, characterized in that: A buckle slot is provided on the outer side surface of the box body where the installation opening is provided. The buckle slot is communicated with the installation opening. When the fixing plate is installed in the installation opening, the end surface of the fixing plate is exposed in the buckle slot.

10. The light box for facilitating light bar maintenance according to claim 1, characterized in that: The fixing plate is provided with a positioning strip for positioning the LED light strip.

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