Foldable lamp box

Abstract

The invention discloses a foldable lamp box which comprises at least one group of door body structures formed by inserting a plurality of lamp box frames and at least one group of angular inserting assemblies, and the angular inserting assemblies are located at the bending positions of the door body structures and provided with third inserting parts and fourth inserting parts which are used for inserting the lamp box frames at the bending positions respectively. The third inserting part and the fourth inserting part are respectively provided with a folding binding surface along a central axis, and are respectively provided with a rotating shaft parallel to the central axis, and the third inserting part and the fourth inserting part can respectively rotate around the rotating shafts; the folding fitting surfaces of the third inserting part and the fourth inserting part are fitted; correspondingly, the lamp box frame connected with the third inserting part and the fourth inserting part in an inserted mode is folded and attached along with the folding attaching face, so that folding storage of the door body structure is completed. The structure can be partially disassembled and folded after being assembled, and when the structure is used again, all the components do not need to be reassembled, so that the structure is very convenient.

Description

Technical Field

[0001] The present invention relates to the field of lighting, and particularly to a foldable light box. Background Art

[0002] Existing light boxes include a fixed structure and an assembled structure in terms of structure. The fixed structure is difficult to fold or disassemble, which increases the difficulty of carrying and storing. Especially when frequent transportation is required or used in a limited space, this structure limits the versatility and portability of the light box; the assembled structure provides more convenience for carrying and storing, but the existing assembled structure often needs to be completely disassembled during use and storage, which increases the time and space costs. With the diversification of commercial activities and exhibitions, users hope to have a light box that can be quickly assembled and conveniently folded and stored to meet the needs of different occasions. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a foldable light box, which can be partially disassembled and folded when not in use through a unique design, facilitating storage. And when used again, it is not necessary to reassemble all components, saving time and labor.

[0004] The technical solution of the present invention is as follows:

[0005] A foldable light box includes at least one set of door body structures formed by plugging a plurality of light box frames and at least one set of angular plugging components. The angular plugging components are located at the bending positions of the door body structures and have a third plugging portion and a fourth plugging portion that respectively plug the light box frames at the bending positions. It is characterized in that: on the third plugging portion and the fourth plugging portion, folding fitting surfaces are respectively arranged along a central axis, and rotating shafts parallel to the central axis are respectively arranged on the third plugging portion and the fourth plugging portion. The third plugging portion and the fourth plugging portion can rotate around the rotating shafts respectively, so that the folding fitting surfaces of the third plugging portion and the fourth plugging portion are in contact with each other;

[0006] Define the extending direction of the light box frame plugged with the third plugging portion and the fourth plugging portion as the plugging direction, and the plane perpendicular to the rotating shaft as the rotating plane. The plugging directions of the third plugging portion and the fourth plugging portion are both inclined to the rotating plane.

[0007] Its further technical solution is:

[0008] It includes two sets of door body structures that are butted up and down, and a linear plugging component is provided at the butting position of the two sets of door body structures. The linear plugging component is used to connect two light box frames located on the same straight line.

[0009] Its further technical solution is:

[0010] The frame combinations that make up the single door structure are divided into three groups, each group of frame combinations is a light box frame or is composed of at least two light box frames plugged in along the same straight line direction, wherein two groups of frame combinations are connected to the two ends of the third group of frame combinations through angular plug-in components, and the two groups of frame combinations are plugged in the third plug-in part, and the third group of frame combinations is plugged in the fourth plug-in part.

[0011] Its further technical solution is:

[0012] The third plug-in portion is also provided with a folding mating surface, and the folding mating surface and the folding fitting surface are respectively provided on both sides of the third plug-in portion. When the folding fitting surfaces of the two groups of third plug-in portions are respectively fitted with the folding fitting surfaces of the fourth plug-in portion, the folding mating surfaces of the two groups of third plug-in portions are located in the same plane.

[0013] Its further technical solution is:

[0014] The light box frame has a frame fitting surface located in the same plane as the folding fitting surface. When the third plug-in portion and the fourth plug-in portion are rotated and folded, the frame fitting surfaces of the two sets of light box frames are driven to fit together.

[0015] Its further technical solution is:

[0016] The linear plug-in assembly includes a first plug-in part and a second plug-in part with identical structures and symmetrical arrangement. The opposite end surfaces of the first plug-in part and the second plug-in part have a recessed clearance groove and a plug-in connection block protruding from the recessed clearance groove.

[0017] Its further technical solution is:

[0018] The opposite end faces of the first plug-in part and the second plug-in part are also provided with screw fixing holes, and screw fixing grooves are provided on the light box frame at positions corresponding to the screw fixing holes. The first plug-in part and the second plug-in part are respectively connected to the corresponding light box frames by screws.

[0019] Its further technical solution is:

[0020] The rotating shaft is connected to a hinge bracket, and the hinge bracket includes a cam structure. The third plug-in part and the fourth plug-in part are provided with contoured grooves at corresponding positions of the cam structure. The cam structure can be accommodated in the contoured groove. The rotating shaft is passed through a hinged through hole on the cam structure and is respectively connected to the third plug-in part and the fourth plug-in part.

[0021] Its further technical solution is:

[0022] The hinge brackets are provided in multiple groups, and the multiple groups of hinge brackets are evenly distributed on the rotating shaft, and all have coaxial hinge through holes for the rotating shaft to pass through.

[0023] Its further technical solution is as follows:

[0024] It further includes two groups of support bases arranged at the bottom. Each support base includes two symmetrically arranged support bodies. Semi-gears that mesh with each other are provided on the opposite end faces of the two support bodies. The two support bodies are respectively hinged to the light box frame through the semi-gear shafts of the semi-gears.

[0025] The beneficial technical effects of the present invention are as follows:

[0026] The light box frame at the bottom (top) of the light box is respectively connected to two groups of light box frames perpendicular to it on both sides through the angular plug-in components at both ends. The double-axis hinge structure in the angular plug-in components enables the light box frames on both sides to be rotatably folded towards the light box frame at the bottom. By partially folding the frame without completely disassembling it, it is convenient for storage. When using it again, there is no need to assemble all components, the assembly is simpler, time cost is saved, and the needs of more occasions are met. Description of the Drawings

[0027] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0028] Figure 2 is the present invention Figure 1 an enlarged schematic diagram of the linear plug-in component in;

[0029] Figure 3 is the present invention Figure 1 an enlarged schematic diagram of the angular plug-in component in;

[0030] Figure 4 is a schematic diagram of the specific structure of the light box frame of the present invention;

[0031] Figure 5 is a schematic diagram of the specific structure of the linear plug-in component of the present invention;

[0032] Figure 6 is a schematic cross-sectional structure diagram of the angular plug-in component of the present invention;

[0033] Figure 7 is an exploded schematic diagram of the angular plug-in component of the present invention;

[0034] Figure 8 is a schematic diagram of the position of the profiling groove of the present invention;

[0035] Figure 9 is a schematic diagram of the specific structure of the hinge bracket of the present invention;

[0036] Figure 10 is a first perspective schematic diagram of the rotation and folding of the third plug-in part and the fourth plug-in part of the present invention;

[0037] Figure 11 is a second perspective schematic diagram of the third plug-in portion and the fourth plug-in portion of the present invention being rotated and folded;

[0038] Figure 12 It is a structural schematic diagram of the third plug-in portion or the fourth plug-in portion of the present invention;

[0039] Figure 13 This is a schematic diagram of the storage section of the present invention being folded and stored;

[0040] Figure 14 It is a schematic diagram of the overall structure of the support base of the present invention;

[0041] Figure 15 This is an exploded view of the overall structure of the support base of the present invention;

[0042] Figure 16 It is a schematic diagram of the partial structure of the support base of the present invention;

[0043] Figure 17 This is a schematic diagram of the specific structure of the half gear of the present invention;

[0044] in:

[0045] 1. Light box frame; 11. Clamping portion; 111. Upper clamping plate; 112. Lower clamping plate; 113. Connecting plate; 12. Support portion; 121. First side panel; 122. Second side panel; 123. Third side panel; 13. Clamping groove; 14. Sliding plate; 141. Sliding boss; 15. Clamping surface; 151. Guide boss; 16. Guide slope;

[0046] 2. Linear plug-in assembly; 21. First plug-in portion; 211. Concave recess; 22. Second plug-in portion; 221. Plug-in connection block; 23. Linear plug-in portion; 231. Guide plate; 232. Position limiting plug-in plate;

[0047] 3. Angular plug-in assembly; 31. Third plug-in portion; 32. Fourth plug-in portion; 33. Biaxial hinge structure; 331. Hinge bracket; 332. First rotation axis; 333. Second rotation axis; 334. Cam structure; 334a. Damping arc slope portion; 334b. Buffering arc slope portion; 335. Contoured groove; 335a. Inner arc surface; 336. Connecting through hole; 337. Hinge through hole; 34. Rotation limiting surface; 35. Folding and fitting surface; 36. Folding and fitting surface; 37. Outer arc surface;

[0048] 4. Support rod;

[0049] 5. Support base; 51. Support body; 511. Support piece; 52. Half gear; 521. Positive gear teeth; 522. Side gear teeth; 53. Gear connecting plate; 54. Half gear shaft; 55. Half gear connecting part; 551. Folding locking part; 56. Connecting groove; 561. Semi-circular depression; 562. Square depression; 57. Gear screw hole. Detailed implementation mode

[0050] In order to be able to more clearly understand the technical means of the present invention and implement it in accordance with the content of the specification, the following combines the drawings and embodiments to further describe in detail the specific implementation mode of the present invention. The following embodiments are used to illustrate the present invention, but are not used to limit the scope of the present invention.

[0051] As Figures 1 to 3 shown, the present invention discloses a foldable light box, which includes a plurality of light box frames 1 and a plug-in assembly for connecting two adjacent light box frames. The lighting fixture assembly is arranged on one or more of the light box frames 1. The light box frame 1 has a receiving groove extending along the length direction and penetrating, for a power supply wire to pass through and be electrically connected to the lighting fixture assembly. The plug-in assembly is provided with a plug-in through hole communicating with the receiving groove along the length direction.

[0052] Specifically, the plug-in assembly includes a linear plug-in assembly 2 and an angular plug-in assembly 3. The linear plug-in assembly 2 is used to connect two light box frames 1 extending in the same direction, and the angular plug-in assembly 3 is used to connect two light box frames 1 with mutually perpendicular extending directions.

[0053] As Figure 4 shown, the light box frame 1 includes a clamping part 11 extending along the length direction and support parts 12 docked on both sides of the clamping part 11. The clamping part 11 includes an upper clamping plate 111 and a lower clamping plate 112 arranged oppositely. The upper clamping plate 111 and the lower clamping plate 112 are fixedly connected by a connecting plate 113 extending along the length direction, so that the upper clamping plate 111, the lower clamping plate 112 and the connecting plate 113 jointly form a clamping groove 13 extending along the length direction and opening to both sides. The clamping groove 13 can be used to clamp and fix a curtain to be displayed, such as a promotional cloth or a display screen, to the light box frame 1. In this embodiment, multiple groups of the connecting plates 113 can be provided and evenly distributed between the upper clamping plate 111 and the lower clamping plate 112.

[0054] The support portion 12 is slidably connected to the clamping portion 11 and includes a first side plate 121 arranged parallel to the clamping portion 11, a second side plate 122, and a third side plate 123 respectively connected to both sides of the first side plate 121. The free sides of the second side plate 122 and the third side plate 123 are respectively connected to both sides of the upper clamping plate 111. The first side plate 121, the second side plate 122, the upper clamping plate 111, and the third side plate 123 sequentially form a hollow chamber with a trapezoidal cross-section.

[0055] Specifically, the end surface where the support portion 12 interfaces with the upper clamping plate 111 is provided with two sets of sliding plates 14 extending toward the upper clamping plate 111 and spaced apart. The ends of the sliding plates 14 extend outward to form sliding bosses 141. The end surface where the upper clamping plate 111 interfaces with the support portion 12 is provided with a clamping surface 15 extending toward the support portion 12 and spaced apart. The ends of the two sets of clamping surfaces 15 extend toward the support portion 12 to form guide bosses 151. The two sets of sliding plates 14 are located between the two sets of clamping surfaces 15, and the two sets of sliding bosses 141 respectively adhere to and slide on the lower end surfaces of the two sets of guide bosses 151. During assembly, the support portion 12 is inserted from the end of the clamping portion 11, and the two sets of sliding plates 14 of the support portion 12 are placed inside the clamping surface 15. With the guide bosses 151 and the sliding bosses 141 in contact with each other, the movement trajectory of the support portion 12 along the length direction is better defined.

[0056] The receiving groove is defined by two groups of the clamping surfaces 15 and two groups of the sliding plates 14 .

[0057] Furthermore, the inner sides of the upper clamping plate 111 where it docks with the second side plate 122 and the third side plate 123 are respectively provided with guide slopes 16 parallel to the second side plate 122 and the third side plate 123. When the support portion 12 is clamped in from the end face of the clamping portion 11, the support portion 12 slides to the installation position along the guide boss 151 under the guidance of the guide slope 16.

[0058] like Figure 5 The linear plug-in assembly 2 includes a first plug-in portion 21 and a second plug-in portion 22 having the same linear plug-in portion 23 and two groups of the linear plug-in portions 23 are symmetrically arranged. The opposite end faces of the first plug-in portion 21 and the second plug-in portion 22 have a recessed clearance groove 211 for plug-in matching and a plug-in connection block 221 protruding from the recessed clearance groove 211. After the recessed clearance groove 211 and the plug-in connection block 221 are plug-in matched, the linear plug-in assembly 2 is aligned with the light box frame 1 and has the same appearance, making the overall foldable light box more beautiful.

[0059] Furthermore, the power supply line located in the linear plug-in assembly 2 includes a first power supply line and a second power supply line that are connected to each other. The first power supply line and the second power supply line are located at opposite end faces of the first plug-in portion 21 and the second plug-in portion 22, and have plug terminals and socket terminals that are plugged in together. When the linear plug-in assembly 2 connects two light box frames 1 on the same straight line, the plug terminals and plug terminals of the first power supply line and the second power supply line are plugged in to each other.

[0060] The linear plug-in portion 23 includes a clamping seam corresponding to the clamping surface 15 . The linear plug-in portion 23 is inserted into the clamping seam through the clamping surface 15 and connected to the clamping portion 11 .

[0061] Furthermore, the linear plug-in portion 23 is located on the inner side of the two groups of the clamping surfaces 15 and has a guide plate 231 extending along the length direction, and the guide plate 231 is used to quickly and accurately insert the linear plug-in portion 23; the linear plug-in portion 23 has an outer shape corresponding to the support portion 12, and the linear plug-in portion 23 is located below the first side plate 121, the second side plate 122 and the third side plate 123 and is fixed with a limiting plug-in plate 232, and the limiting plug-in plate 232 has a guiding and limiting function.

[0062] In this embodiment, the opposite end surfaces of the first plug-in portion 21 and the second plug-in portion 22 are further provided with screw fixing holes, and screw fixing grooves are provided on the clamping surface at positions corresponding to the screw fixing holes. The first plug-in portion 21 and the second plug-in portion 22 are respectively connected to the corresponding clamping portion 11 by screws, so that the first plug-in portion 21 and the second plug-in portion 22 are more firmly connected to the corresponding clamping portion 11. When the light box frame 1 is assembled later, the connection can be completed by simply plugging the recessed groove 211 and the plug-in connection block 221.

[0063] like Figure 6 The angular plug-in assembly 3 includes a third plug-in portion 31 and a fourth plug-in portion 32 hingedly connected to the third plug-in portion 31 through a biaxial hinge structure 33; the third plug-in portion 31 and the fourth plug-in portion 32 have the same structure and both have a linear plug-in portion 23 with the same structure as the linear plug-in assembly 2. After the third plug-in portion 31 and the fourth plug-in portion 32 are respectively plugged into two light box frames 1 that are perpendicular to the extension direction, the clamping portions 11 of the two light box frames 1 are perpendicular to the extension direction; and the third plug-in portion 31 and the fourth plug-in portion 32 can be rotated to expand and rotated to fold through the biaxial hinge structure 33, and form a rotation limiting surface 34 that abuts against each other after rotational expansion and a folding fitting surface 35 that abuts against each other after rotational folding.

[0064] The third plug-in portion 31 and the fourth plug-in portion 32 are further provided with folding mating surfaces 36, and the folding mating surfaces 36 and the folding affixed surfaces 35 are respectively provided on both sides of the third plug-in portion 31 and the fourth plug-in portion 32. The rotation limiting surface 34 is a trapezoidal structure.

[0065] The dual-axis hinge structure 33 includes a hinge bracket 331 and at least two groups of rotating shafts arranged parallel to each other and rotatably connected to the hinge bracket 331. In this embodiment, the rotating shafts include a first rotating shaft 332 connected to the third plug-in portion 31 and a second rotating shaft 333 connected to the fourth plug-in portion 32. The third plug-in portion 31 and the fourth plug-in portion 32 can rotate around the first rotating shaft 332 and the second rotating shaft 333 respectively, so that the folding fitting surfaces 35 of the third plug-in portion 31 and the fourth plug-in portion 32 are fitted together.

[0066] The extension direction of the light box frame 1 plugged with the third plugging portion 31 and the fourth plugging portion 32 is defined as the plugging direction, the plane perpendicular to the rotation axis is the rotation plane, and the plugging directions of the third plugging portion 31 and the fourth plugging portion 32 are both inclined to the rotation plane.

[0067] like Figures 6 to 8 As shown, the hinge bracket 331 includes a cam structure 334. The third and fourth plug-in sections 31 and 32 are provided with contoured grooves 335 at positions corresponding to the cam structure 334. The cam structure 334 can be accommodated within the contoured grooves 335, and the contoured grooves 335 provide ample rotational space for the cam structure 334 during the rotational folding and unfolding of the third and fourth plug-in sections 31 and 32. Connecting ears are formed on either side of the contoured grooves 335, each of which is provided with a connecting through-hole 336 for transmission connection with the first rotating shaft 332 or the second rotating shaft 333. The cam structure 334 is also provided with a hinged through-hole 337 coaxial with the connecting through-hole 336 for the first rotating shaft 332 or the second rotating shaft 333 to pass through.

[0068] The connecting through hole 336 may be a polygonal hole or a threaded hole.

[0069] The hinge through hole 337 is a hollow cylindrical through hole. The resistance, i.e., the torque, required by the biaxial hinge structure 33 can be adjusted through the hollow cylindrical through hole to meet various working force requirements.

[0070] In this embodiment, the hinge bracket 331 is a symmetrical structure, and the cam structures 334 are symmetrically arranged at both ends of the hinge bracket 331 .

[0071] Further, such as Figure 9, the cam structure 334 includes a damping arc slope surface 334a and a buffer arc slope surface 334b that protrude outward and are smoothly connected to each other. The radius of curvature of the damping arc slope surface 334a is greater than that of the buffer arc slope surface 334b. And the inner arc surface 335a of the profiling groove 335 located at the position of the damping arc slope surface 334a fits the damping arc slope surface 334a. When the third insertion part 31 and the fourth insertion part 32 are rotating and folding and rotating and unfolding, the damping arc slope surface 334a that protrudes outward plays a damping role on the third insertion part 31 and the fourth insertion part 32, that is, it has a certain buffering effect, so as to achieve a slow and stable rotation process. The force applied during manual operation is easier to control, improving the safety of the operation and having a better experience.

[0072] In this embodiment, multiple groups of hinge brackets 331 are provided. The multiple groups of hinge brackets 331 are evenly distributed on the rotating shaft, and the multiple groups of hinge brackets 331 all have coaxial hinge through holes 337. The first rotating shaft 332 and the second rotating shaft 333 are respectively passed through the multiple groups of coaxial hinge through holes 337 in sequence. By setting the multiple groups of hinge brackets 331, the forces on the third insertion part 31 and the fourth insertion part 32 are more evenly distributed during the relative rotation movement, and the values of each working force are easier to adjust.

[0073] During the rotation and folding process, by applying an appropriate force to the third insertion part 31 and the fourth insertion part 32, the third insertion part 31 rotates relative to the fourth insertion part 32 until it abuts and fits against the folding fitting surface 35, and the folding action is completed, as Figures 10 to 12 ; During the rotation and unfolding process, by applying forces in opposite directions to the third insertion part 31 and the fourth insertion part 32, the third insertion part 31 rotates in the opposite direction relative to the fourth insertion part 32 until it abuts and fits against the rotation limiting surface 34, and the unfolding action is completed.

[0074] Further, the folding fitting surface 35 is connected to the rotation limiting surface 34 through an outer arc surface 36, so that the third insertion part 31 and the fourth insertion part 32 are smoother and more labor-saving during the rotation and folding and rotation and unfolding processes.

[0075] When assembling the angular plug-in component 3, through the screw fixing holes on the opposite end faces of the third insertion part 31 and the fourth insertion part 32, the third insertion part 31 and the fourth insertion part 32 are respectively screw-fixed to the corresponding clamping parts 11. Then, the rotation limiting surfaces 34 of the third insertion part 31 and the fourth insertion part 32 are abutted and fitted, and the profiling grooves 335 on the sides are docked. The multiple groups of hinge brackets 331 are placed into the docked profiling grooves 335 one by one, and the rotating shaft is passed through the multiple groups of hinge brackets 331 and connected to the connection through holes 336 on both sides to complete the connection of the angular plug-in component 3 to the two light box frames 1 perpendicular to the extension direction.

[0076] The foldable light box includes at least one door structure formed by plugging together a plurality of light box frames 1 and at least one angular plug-in assembly 3 , wherein the angular plug-in assembly 3 is located at a bend of the door structure.

[0077] In this embodiment, the frame combinations that constitute a single door structure are three groups, each frame combination is a light box frame 1 or is composed of at least two light box frames 1 plugged in along the same straight line direction, wherein two groups of frame combinations are respectively connected to the two ends of the third group of frame combinations through angular plug-in components 3, and the two groups of frame combinations are defined as being plugged in the third plug-in part 31, and the third group of frame combinations is plugged in the fourth plug-in part 32.

[0078] Furthermore, the light box frame 1 has frame fitting surfaces that are coplanar with the folding fitting surface 35 and the folding mating surface 36. When the third plug-in portion 31 and the fourth plug-in portion 32 are rotated and folded, the frame fitting surfaces of the two sets of light box frames 1 are driven to fit together. In this embodiment, the surfaces of the second side panel 122 and the third side panel 123 of the light box frame 1 are both the frame fitting surfaces. When the third plug-in portion 31 and the fourth plug-in portion 32 are rotated and folded, the two sets of light box frames 1 are driven to rotate and fit respectively on the planes corresponding to the second side panel 122 and the third side panel 123 of the third set of light box frames 1.

[0079] In this embodiment, the foldable light box includes six light box frames 1 with exactly the same shape and size, which are assembled to form two sets of door structures that are connected up and down. The two sets of door structures are connected at the relative joints by a linear plug-in component 2 to assemble the six light box frames 1 into a rectangle by connecting them end to end along the length direction.

[0080] After the display is completed, the foldable light box is separated by the recessed clearance groove 211 and the plug-in connection block 221 of the linear plug-in assembly 2 to be disassembled into two groups of identical door structures. After the door structure is rotated and folded through two groups of double-axis hinge structures 33, the light box frames 1 on both sides are folded and fitted onto the second side panel 122 and the third side panel 123 of the other light box frame 1, and two groups of foldable storage sections are formed; when used again, the storage section is rotated and unfolded through the double-axis hinge structure 33, and then the plug-in connection block 221 is inserted into the recessed clearance groove 211 to complete the connection of the two groups of storage sections, and the assembly is completed, which greatly shortens the assembly and storage time, and the assembly and storage are very convenient.

[0081] In this embodiment, each door body structure is composed of two light box frames 1 respectively arranged at both ends of a third light box frame 1 through angular connectors 3, and the folding fitting surface 35 and the folding mating surface 36 intersect at an angle of 120 degrees on their respective extension surfaces. When the folding fitting surfaces 35 of two groups of third insertion parts 31 are respectively rotationally fitted with the folding fitting surface 35 of the fourth insertion part 32, the folding mating surfaces 36 of the two groups of third insertion parts 31 are located in the same plane. That is, when the folding fitting surfaces 35 of two groups of third insertion parts 31 are respectively rotationally fitted with the folding fitting surface 35 of the fourth insertion part 32, the two light box frames 1 are respectively fitted on the second side plate 122 and the third side plate 123 of the third light box frame 1. At the same time, the two light box frames 1 are fitted with the frame fitting surfaces located in the same plane as the folding mating surfaces 36 of the two groups of third insertion parts 31. At this time, the storage section encloses to form a triangular prism structure, making the folding storage more complete and more beautiful, as Figure 13 .

[0082] In this embodiment, there is also a support rod 4 between the linear insertion components 2 on both sides of the foldable light box. The linear insertion component 2 is provided with a support ring groove at the connection between the first insertion part 21 and the second insertion part 22, and the linear insertion component 2 is provided with an avoidance space at the position of the support ring groove. The support rod 4 is connected to the support ring groove through the avoidance spaces on both sides, and this support rod 4 makes the foldable light box more stable and firm during the working process.

[0083] Furthermore, the foldable light box further includes two groups of support bases 5 arranged at the bottom, as Figures 14 to 17 , the support base 5 includes two groups of symmetrically arranged support bodies 51. A synchronous opening and closing mechanism is provided on the opposite end faces of the two groups of support bodies 51. The synchronous opening and closing mechanism includes two groups of meshing half gears 52 and a gear connecting plate 53. Both ends of the gear connecting plate 53 are respectively hinged to the half gears 52 through the half gear shafts 54 of the half gears 52.

[0084] The synchronous opening and closing mechanism further includes two groups of symmetrically arranged half gear connecting parts 55. One end of the two groups of half gear connecting parts 55 facing each other is two groups of meshing half gears 52, and the other ends are respectively connected to the support bodies 51 in a butt joint manner.

[0085] The side of the half gear connecting part 55 has a folding locking part 551. When the support body 51 is in the support state, that is, the two groups of support bodies 51 are symmetrical and on the same straight line, after the two groups of support bodies 51 rotate 90° along the half gear under the action of an external force, the folding locking parts 551 abut and fit, and at this time the two groups of support bodies 51 are in a parallel state.

[0086] The expansion or folding and storage of the storage support base 5 can be achieved by applying a thrust to the support body 51. Due to the hinged connection between the gear connecting plate 53 and the meshing half gear 52, the rotation of the meshing half gear 52 is stable, avoiding slipping and idling during the expansion or folding and storage of the storage support base 5.

[0087] In this embodiment, the half gear connecting portion 55 is fixedly connected to the support body 51 by screws. Specifically, one end of the support body 51 that abuts against the half gear connecting portion 55 has a support piece 511. The support piece 511 extends outward from the end face of the support body 51, and the support piece 511 and the support body 51 form a stepped structure. The half gear connecting portion 55 is disposed on the support piece 511. Specifically, the lower end face of the half gear connecting portion 55 has a connecting groove 56 corresponding to the support piece 511, and the half gear connecting portion 55 and the support piece 511 have corresponding gear screw holes 57. The half gear connecting portion 55 is screwed to the support piece 511 through the gear screw holes 57.

[0088] In this embodiment, there are three groups of the gear screw holes 57. The center point connection lines of the three groups of gear screw holes 57 form a triangle. The half gear connecting portion 55 is fixed on the support piece 511 by screws and these three groups of gear screw holes 57. Due to the stability of the triangle, the fixation is more reliable.

[0089] Furthermore, the upper end face of the half gear connecting portion 55 and the upper end face of the support body 51 are in the same plane.

[0090] In this embodiment, the teeth of the half gear 52 are provided on a quarter of the root circle. That is, the butting end faces of the two groups of half gear connecting portions 55 include a meshing positive tooth portion 521 and a butting plane portion 552. When the two groups of support bodies 51 are in a supporting state, the two groups of plane portions 552 butt against each other. The positive gear portion 521 extends along the root circumference to the corresponding sides of the two groups of half gear connecting portions 55 to form side tooth portions 522. The side tooth portions 522 are butted against the folding locking portion 551. In this embodiment, the half gear 52 and the half gear connecting portion are integrally formed. This structure enables the storage support base 5 to be folded and stored only along one side of the support body 51, and the plane portion 552 ensures that the two groups of support bodies 51 are in a straight line when unfolded, preventing the expansion angle from being too large and affecting the support effect.

[0091] Further, the connecting groove 56 has a semi-circular recess 561 concentric with the root circle of the tooth and a square recess 562 communicating with the semi-circular recess 561. The support piece 511 is received in the connecting groove 56. One set of gear screw holes 57 is located in the semi-circular recess 561, and the other two sets of gear screw holes 57 are located in the square recess 562. By proper arrangement, the center point connection lines of the three sets of gear screw holes 57 can form a triangle with the maximum area, making the fixation of the semi-gear connection part 55 and the support piece 511 more stable.

[0092] During use, only apply corresponding forces to each support body 51. Through the cooperation of the support body 51 and the semi-gear 52, the support base 5 can be smoothly folded under the foldable light box to complete the folding and storage. Similarly, when unfolding the support base 5, only apply a reverse thrust to each support body 51, and the support body 51 can be quickly unfolded, making the support base 5 return to the stable support state. The unfolding and folding storage of this mechanism can be easily operated, is very convenient to use, and does not occupy extra space.

[0093] When using this foldable light box for the first time, first assemble it. After use, disassemble and fold it for storage. When using it again, there is no need to reassemble all components, which is very convenient and saves time and manpower.

[0094] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A foldable light box, comprising at least one set of door structures formed by plugging a plurality of light box frames (1) and at least one set of angular plugging components (3), the angular plugging components (3) being located at the bending positions of the door structures and having a third plugging portion (31) and a fourth plugging portion (32) respectively plugging the light box frames (1) at the bending positions; characterized in that: The third plug-in portion (31) and the fourth plug-in portion (32) are each provided with a folding and fitting surface (35) along a central axis, and a rotation axis parallel to the central axis is respectively provided on the third plug-in portion (31) and the fourth plug-in portion (32), and the third plug-in portion (31) and the fourth plug-in portion (32) can each rotate around the rotation axis so that the folding and fitting surface (35) of the third plug-in portion (31) and the fourth plug-in portion (32) are fitted together; The extension direction of the light box frame (1) plugged with the third plug-in portion (31) and the fourth plug-in portion (32) is defined as the plug-in direction, the plane perpendicular to the rotation axis is defined as the rotation plane, and the plug-in directions of the third plug-in portion (31) and the fourth plug-in portion (32) are both inclined to the rotation plane.

2. The foldable light box according to claim 1, characterized in that: It comprises two sets of door structures butted up and down, and a linear plug-in assembly (2) is provided at the joint of the two sets of door structures. The linear plug-in assembly (2) is used to connect two light box frames (1) located in the same straight line.

3. The foldable light box according to claim 1, wherein: The frame combinations constituting a single door structure are divided into three groups, each group of frame combinations is a light box frame (1) or is formed by plugging at least two light box frames (1) in the same straight line direction, wherein two groups of frame combinations are respectively arranged at both ends of the third group of frame combinations through angular plug-in components (3), and the two groups of light box frames (1) are plugged into the third plug-in portion (31), and the third group of frame combinations is plugged into the fourth plug-in portion (32).

4. The foldable light box according to claim 3, wherein: The third plug-in portion (31) is further provided with a folding mating surface (36), and the folding mating surface (36) and the folding affixed surface (35) are respectively provided on both sides of the third plug-in portion (31). When the folding affixed surfaces (35) of the two groups of third plug-in portions (31) are respectively affixed to the folding affixed surfaces (35) of the fourth plug-in portion (32), the folding mating surfaces (36) of the two groups of third plug-in portions (31) are located in the same plane.

5. The foldable light box according to claim 4, wherein: The light box frame (1) has frame fitting surfaces located in the same plane as the folding fitting surface (35) and the folding matching surface (36). When the third plug-in portion (31) and the fourth plug-in portion (32) are rotated and folded, the frame fitting surfaces of the two sets of light box frames (1) are driven to fit together.

6. The foldable light box according to claim 2, wherein: The linear plug-in assembly (2) comprises a first plug-in portion (21) and a second plug-in portion (22) of identical structure and symmetrical arrangement, wherein the opposite end surfaces of the first plug-in portion (21) and the second plug-in portion (22) are provided with a recessed clearance groove (211) for plugging in with each other and a plug-in connection block (221) protruding from the recessed clearance groove (211).

7. The foldable light box according to claim 6, characterized in that: The opposite end surfaces of the first plug-in portion (21) and the second plug-in portion (22) are further provided with screw fixing holes, and screw fixing grooves are provided on the light box frame (1) at positions corresponding to the screw fixing holes, and the first plug-in portion (21) and the second plug-in portion (22) are respectively connected to the corresponding light box frame (1) by screws.

8. The foldable light box according to claim 1, wherein: The rotating shaft is penetrated and connected to a hinge bracket (331). The hinge bracket (331) includes a cam structure (334). The third insertion part (31) and the fourth insertion part (32) are provided with profiling grooves (335) at corresponding positions of the cam structure (334). The cam structure (334) can be accommodated in the profiling groove (335). The rotating shaft is penetrated through the hinge through holes (337) on the cam structure (334) and is respectively in transmission connection with the third insertion part (31) and the fourth insertion part (32).

9. The foldable light box according to claim 8, characterized in that: There are multiple groups of the hinge brackets (331). The multiple groups of hinge brackets (331) are evenly distributed on the rotating shaft and all have coaxial hinge through holes (337) for the rotating shaft to penetrate through.

10. The foldable light box according to claim 1, characterized in that: It further includes two groups of support bases (5) arranged at the bottom. The support base (5) includes two groups of symmetrically arranged support bodies (51). Meshing half gears (52) are provided on the opposite end faces of the two groups of support bodies (51). The two groups of support bodies (51) are respectively hinged to the light box frame (1) through the half gear shafts (54) of the half gears (52).

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