A type of light box with a frame and its frame profile and the profile extension connection structure.

Abstract

This utility model discloses a lightbox with a fabric insert, its frame profile, and the profile extension connection structure. The frame profile includes an internal cavity, two fabric insert grooves located at both ends of the width direction, and two hooks located at the middle of one end of the thickness direction. The cavity includes two connecting cavities symmetrically arranged at both ends of the width direction of the frame profile, and a structural cavity between the two connecting cavities. The frame profile has two holes that connect the two connecting cavities. This frame profile adopts a double connecting cavity and central structural cavity design, significantly improving rigidity. The hooks and holes work together to achieve quick installation, and the fabric insert grooves ensure a flat image. The modular structure reduces costs and facilitates maintenance, combining versatility and expandability, adapting to lightboxes of various sizes, and providing a high-performance, low-cost overall solution.

Description

Technical Field

[0001] This utility model relates to a light box with a frame and its frame profile and the extension connection structure of the profile. Background Technology

[0002] As a lighting device widely used in advertising signage, commercial displays, and indoor and outdoor decoration, the structural design of the frame profile directly affects the ease of assembly, structural stability, and image flatness of the lightbox. Traditional lightbox frames typically use simple splicing or screw fixing methods, resulting in low assembly efficiency, insufficient connection strength, and uneven image tension. This type of structure lacks an optimized stress distribution structure, making it prone to profile torsion deformation during long-term use, leading to a deterioration in the lightbox's flatness. Furthermore, its profile extension structure relies on external connectors, which not only compromises the overall aesthetics but also increases the complexity of supply chain management. This is particularly evident in large-scale lightbox projects, ultimately leading to a significant increase in on-site installation work and maintenance costs. To solve these technical problems, it is necessary to develop an optimized snap-fit ​​cavity and snap-fit ​​hole connection method to achieve rapid snap-fitting, enabling high-strength connections without additional tools when the profile extends along its length, and significantly reducing manufacturing costs. Utility Model Content

[0003] The purpose of this utility model is to provide a light box with a frame and its frame profile and the profile extension connection structure.

[0004] The technical solution to achieve the purpose of this utility model is: a light box with a frame and its frame profile and the profile extension connection structure, specifically,

[0005] A frame profile for a fabric light box includes an internal cavity, two fabric grooves located at the outer ends of both ends in the width direction, and two hooks located at the middle of one end in the thickness direction; the cavity includes two connecting cavities located at both ends of the frame profile in the width direction and arranged symmetrically, and a structural cavity located between the two connecting cavities; the frame profile is provided with two holes that connect the two connecting cavities respectively.

[0006] The aforementioned frame profile employs a multi-cavity structure with symmetrically distributed double connecting cavities and a central structural cavity, significantly enhancing the overall bending stiffness and torsional resistance of the profile. This effectively prevents profile deformation and ensures the long-term flatness of the image. Its hook and hole combination structure enables rapid positioning and reliable fixing, eliminating the need for traditional fasteners and greatly improving assembly efficiency. The width-oriented fabric grooves ensure uniform tension on the advertising image, preventing wrinkles and loosening. Combined with a modular design, this reduces production and inventory costs and facilitates later maintenance. This structural design combines versatility and expandability, meeting the rapid assembly needs of small light boxes and allowing for extension to larger light box projects, providing the industry with a superior, lower-cost, and faster overall solution.

[0007] The frame profile also includes a light strip mounting groove located at the middle of one end in the thickness direction, and the two hooks are located on both sides of the groove opening of the light strip mounting groove.

[0008] This design allows for quick and easy securing of the light strip by engaging the clips at the ends, effectively preventing displacement or loosening during use and ensuring stable lighting. Simultaneously, this integrated design eliminates the need for additional brackets required by traditional light strips, significantly improving assembly efficiency and resulting in a more aesthetically pleasing overall structure. The clamping structure of the mounting slot also enhances heat dissipation, extends the strip's lifespan, and facilitates subsequent maintenance and replacement.

[0009] The profile also includes an expansion slot located at the middle of the other end in the thickness direction. This expansion slot provides a flexible functional expansion interface for the light box, facilitating the installation of auxiliary fasteners and significantly improving the product's adaptability in complex outdoor environments. The symmetrical distribution of the expansion slot and the light strip slot optimizes the stress structure of the profile, significantly increasing the moment of inertia of the cross-section and further enhancing the profile's resistance to deformation. At the same time, this modular design allows customers to select different functional components according to their actual needs, meeting both the requirements of standardized production and realizing personalized customization of the product. This allows the same profile to be adapted to diverse application scenarios such as commercial displays and outdoor advertising. In addition, the reserved design of the expansion slot greatly reduces the cost of later modification and upgrades. When new functions are needed, there is no need to replace the entire profile; only the corresponding module needs to be installed, providing users with greater design freedom and cost control space.

[0010] It also includes two inclined concave arc surfaces located at both ends of the width direction, which make the profile edge form a progressive stress transition zone, effectively eliminating the stress concentration phenomenon caused by traditional right angle design; from the perspective of production process, the arc structure is conducive to metal flow during extrusion molding, improving the surface smoothness and dimensional stability of the profile.

[0011] A profile extension connection structure is disclosed for connecting two frame profiles of a lightbox of the aforementioned type along their length. The structure includes a straight connector and a connecting buckle. The straight connector's shape is adapted to the connecting cavity of the frame profile, and both ends of the straight connector are provided with elastic locking blocks that mate with locking holes on the frame profile. The connecting buckle has two hook grooves that respectively mate with two hooks on the frame profile. This extension structure's connecting buckle can automatically lock in place by engaging the locking holes of the profile, effectively improving the strength of the single-point connection. Its double-buckle design effectively suppresses torsion and flexural deformation of the connection area through the three-dimensional interlocking of the hook grooves and hooks. This structure enables tool-free rapid installation, significantly improving installation efficiency. Its modular design offers excellent versatility and can adapt to different profile extension requirements. This solution is a connection solution that combines reliability, convenience, and economy.

[0012] This utility model also relates to a light box, including a frame, a display cloth and a back panel distributed on the front and back sides of the frame, and an LED light group fixed on the inner side of the back panel. At least one pair of opposite straight edges of the frame are connected by at least two frame profiles along the length direction using the above-mentioned profile extension connection structure.

[0013] In this structure, the locking blocks and holes radially lock the frame, forming a stable spatial constraint system that effectively prevents loosening of the connections. In the fabric fixing system, the inclined design of the fabric slot matches the characteristics of the display fabric, and the guide structure of the concave arc surface of the profile ensures more uniform fabric tension, guaranteeing the flatness of the image. The LED light assembly is integrated into the profile, and the heat dissipation structure of the light strip mounting slot forms an effective heat conduction path with the light panel, improving the system's heat dissipation performance.

[0014] It also includes reinforcing rods; both ends of the reinforcing rods are connected to two connecting clips on a pair of opposite straight edges of the frame. The rigid connection structure between the reinforcing rods and the connecting clips forms a stable truss support system within the frame, significantly improving the bending and torsional resistance of the large lightbox and effectively preventing frame deformation. In actual structural design, the reinforcing rods are generally pre-installed; after the frame profiles are connected, they can be directly inserted into the pre-interface of the connecting clips, achieving quick connection without additional tools.

[0015] The connecting buckle is equipped with a T-shaped locking block; both ends of the reinforcing rod are provided with T-shaped slots that connect with the T-shaped locking blocks. The bidirectional locking characteristic of this T-shaped buckle structure effectively prevents the reinforcing rod from axial displacement or rotation under stress, ensuring the structural stability of the connection node under various loads.

[0016] In terms of specific structure, the aforementioned T-shaped locking block structure is installed in a push-in manner in the horizontal direction. It has a stop block structure along the internal direction of the frame, which can limit the range of motion of the reinforcing rod, making the load on the contact surface of the T-shaped structure more uniform and significantly improving the load-bearing capacity of the connection part.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects:

[0018] (1) The frame profile of this utility model adopts a multi-cavity structure with symmetrically distributed double connecting cavities and a central structural cavity, which significantly enhances the overall bending stiffness and torsional performance of the profile, effectively preventing profile deformation and ensuring the flatness of the image for a long time. Its hook and hole matching structure realizes rapid positioning and reliable fixing, eliminating the need for traditional fasteners and greatly improving assembly efficiency; its width-oriented fabric grooves ensure that the advertising image is taut and uniform, avoiding wrinkles and loosening, and the modular design can reduce production and inventory costs and facilitate later maintenance; the structural design has both versatility and expandability, which can meet the rapid assembly needs of small light boxes and can also be extended to connect large light box projects, providing the industry with a better performance, lower cost and faster installation overall solution.

[0019] (2) The profile sidewall of this utility model is provided with a light strip mounting groove and a hook structure, which can quickly fix the light strip through the cooperation of the buckle with the end of the light strip, effectively preventing the light strip from shifting or loosening during use and ensuring the stability of the lighting. At the same time, this integrated design avoids the procedure of requiring an additional bracket for traditional light strips, which greatly improves the assembly efficiency of the light strip and makes its overall structure more beautiful; the clamping structure of the light strip mounting groove can also improve the heat dissipation efficiency of the light strip, extend the service life of the light strip, and make subsequent maintenance and replacement more convenient.

[0020] (3) The frame profile of this utility model is also provided with an expansion groove, which provides a flexible functional expansion interface for the light box, facilitates the installation of auxiliary fasteners, and significantly improves the product's adaptability in complex outdoor environments.

[0021] (4) The frame profile of this utility model has a concave arc surface with an inclination in the width direction, which can make the edge of the profile form a progressive stress transition zone and eliminate the stress concentration phenomenon caused by the traditional right angle design.

[0022] (5) This utility model relates to a profile extension structure, whose connecting buckle can be used with the profile buckle hole to achieve automatic locking, effectively improving the single-point connection strength of the profile and effectively suppressing the torsion and flexural deformation of the connection part.

[0023] (6) This utility model also relates to a fabric light box, which uses the profile and connection structure of this design to achieve a stable spatial constraint system, which can effectively prevent the connection structure from loosening. Compared with ordinary fabric light boxes, its fabric tension is more uniform and the picture flatness is better.

[0024] (7) The light box of this utility model has a reinforcing rod, and a stable truss support structure is formed between the reinforcing rod and the frame, which can significantly improve the bending and torsion resistance of the large light box and prevent the frame from deforming.

[0025] (8) The connecting buckle of this utility model is provided with a T-shaped buckle block. Both ends of the reinforcing rod are provided with T-shaped slots that connect with the T-shaped buckle block. The bidirectional locking characteristic of the T-shaped buckle structure effectively prevents the reinforcing rod from axial displacement or rotation when subjected to force, ensuring that the connection node maintains structural stability under various loads. Attached Figure Description

[0026] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0027] Figure 1 This is a schematic diagram of the structure of the fabric light box of this utility model;

[0028] Figure 2 This is a schematic diagram of the frame profile structure of this utility model. Figure 1 ;

[0029] Figure 3 This is a schematic diagram of the frame profile structure of this utility model. Figure 2 ;

[0030] Figure 4 This is a schematic diagram of the frame profile structure of this utility model. Figure 3 ;

[0031] Figure 5 This is a schematic diagram of the profile extension connection structure of this utility model. Figure 1 ;

[0032] Figure 6 This is a schematic diagram of the profile extension connection structure of this utility model. Figure 2 ;

[0033] The labels in the attached diagram are:

[0034] Frame profile 1, connecting cavity 11, structural cavity 12, clip groove 13, clip hole 14, clip hook 15, light strip mounting groove 16, expansion groove 17, concave arc surface 18, straight connector 2, elastic clip 21, connecting buckle 3, hook groove 31, T-shaped clip 32, reinforcing rod 4, T-shaped clip groove 41. Detailed Implementation

[0035] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] In the description of the embodiments of this utility model, it should be understood that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly used when the utility model product is in use, or the orientation or positional relationship commonly understood by those skilled in the art. They are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The utility model will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of this utility model and should not be used to limit the scope of protection of this utility model.

[0041] (Example 1)

[0042] See Figure 1 This utility model also relates to a light box with a fabric insert, including a frame, a display fabric and a back panel distributed on the front and back sides of the frame, and an LED light assembly fixed to the inner side of the back panel. At least one pair of opposing straight edges of the frame are formed by connecting at least two frame profiles along their length using one of the aforementioned profile extension connection structures. In use, the LED light assembly is placed inside the frame, and then the display fabric and back panel are snapped into the fabric insert groove 13 to complete the installation.

[0043] The aforementioned lightbox also includes a reinforcing rod 4; both ends of the reinforcing rod 4 are connected to two connecting clips 3 on a pair of opposite straight edges of the frame. The reinforcing rod 4 is detachably connected to the frame.

[0044] In the above structure, the reinforcing rod 4 serves to connect the two side frames and improve the overall structural strength. The specific number of reinforcing rods 4 is determined according to the frame specifications.

[0045] The structure of the frame part is as follows Figure 2 and Figure 3 As shown, Figure 2 A frame profile for a lightbox includes an internal cavity, two fabric-holding grooves 13 located at the outer ends of both ends in the width direction, and two hooks 15 located at the middle of one end in the thickness direction. The cavity includes two connecting cavities 11 symmetrically arranged at both ends of the frame profile 1 in the width direction, and a structural cavity 12 located between the two connecting cavities 11. The frame profile 1 has two locking holes 14 respectively connecting the two connecting cavities 11 (e.g., ...). Figure 4 ).

[0046] The frame profile is generally made of aluminum. In order to effectively eliminate the stress concentration phenomenon of traditional frames, the frame profile also includes two inclined concave arc surfaces 18 located at both ends of the width direction. The concave arc surfaces 18 are set towards the inside of the frame, and the concave arc surfaces are set as a smooth transition structure.

[0047] The fabric groove 13 is used to embed the lightbox fabric after the frame is connected. The connecting cavity 11 and structural cavity 12 in this structure are used to connect the structures. When only a general strength connection is required, the connector is placed in the connecting cavity 11. When a stronger connection structure is required, a connecting reinforcement can be set in the structural cavity 12 to improve the connection strength. For example, when making a straight-line connection, only the connector is set in the connecting cavity 11. When there is a stress concentration at corners or other locations, setting another connector in the structural cavity 12 can effectively improve the connection strength.

[0048] Profile connectors are required during the connection of the frame components, specifically as follows: Figure 5 and Figure 6The illustrated profile extension connection structure is used to connect two of the above-mentioned frame profiles along the length direction, including a straight connector 2 and a connecting buckle 3; the shape of the straight connector 2 is adapted to the connecting cavity 11 of the frame profile 1, and both ends of the straight connector 2 are provided with elastic locking blocks 21 that cooperate with the locking holes 14 on the frame profile 1; the connecting buckle 3 is provided with two hook grooves 31 that respectively cooperate with two hooks 15 on the frame profile 1.

[0049] In the above structure, the linear connector 2 adopts an integral injection molding structure, and the elastic block 21 is a cantilever boss structure. When the linear connector 2 and the frame profile 1 are engaged, the boss of the elastic block 21 is engaged in the card hole 14 to achieve a stable connection between the connector 2 and the frame profile 1.

[0050] In this structure, the straight connector 2 connects the two frame profiles 1 on the same straight line, and provides horizontal constraint for the frame profiles 1; the elastic block 21 and the locking hole 14 fix the two profiles 1 vertically.

[0051] The connecting buckle 3 of the light box is provided with a T-shaped buckle 32; both ends of the reinforcing rod 4 are provided with T-shaped slots 41 that connect with the T-shaped buckle 32, and the reinforcing rod 4 is provided with a retaining ring that matches the T-shaped slot 41. The retaining ring is fixed to one end of the reinforcing rod. When in use, the retaining ring is pushed into the T-shaped slot 41 to complete the installation and locking of the reinforcing rod.

[0052] In use, the straight connector 2 is placed into the frame profile 1, and the elastic blocks 21 at both ends are inserted into the clip holes 14 of the frame profile 1 on both sides to complete the connection between the two frame profiles 1. After the connection is completed, the hook groove 31 of the buckle 3 is inserted into the hook 15 of the frame profile 1 to complete the engagement. Then the buckle 3 is fixed vertically to complete the installation of the buckle 3.

[0053] In actual production, the frame often also serves to install light strips. To achieve this, the frame profile also includes a light strip mounting groove 16 located in the middle of one end in the thickness direction, and the two hooks 15 are located on both sides of the groove opening of the light strip mounting groove 16. In use, the light strip is installed in the light strip mounting groove 16, and the hooks 15 restrict the light strip from moving inward into the frame.

[0054] In actual production, it is often necessary to expand the application of the light box. In order to realize the functional expansion and facilitate the drilling of auxiliary fasteners, the frame profile also includes an expansion groove 17 located in the middle of the other end in the thickness direction. In outdoor occasions, expansion is often required. When expanding, the accessories are inserted into the expansion groove 17. The expansion parts can slide along the expansion groove 17 in the extension direction of the profile. The installation height can be adjusted according to actual needs.

[0055] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A frame profile for a cabinet light box, characterised in that: It includes an internal cavity, two card slots (13) located at the outer ends of the width direction, and two hooks (15) located at the middle of one end of the thickness direction; the cavity includes two connecting cavities (11) located at the two ends of the width direction of the frame profile (1) and arranged symmetrically, and a structural cavity (12) located between the two connecting cavities (11); the frame profile (1) is provided with two card holes (14) that connect the two connecting cavities (11) respectively.

2. A frame profile for a cabinet light box according to claim 1, characterised in that: It also includes a light strip mounting groove (16) located in the middle of one end in the thickness direction, and the two hooks (15) are located on both sides of the groove opening of the light strip mounting groove (16).

3. A frame profile for a cabinet light box according to claim 1, wherein: It also includes an expansion groove (17) located at the middle of the other end in the thickness direction.

4. A border section for clamping a light box according to claim 1, characterized in that: It also includes two inclined concave arc surfaces (18) located at both ends of the width direction.

5. A profile extension connecting structure for connecting two frame profile members of a cabinet light box according to any one of claims 1 to 4 in the lengthwise direction, characterized by: It includes a straight connector (2) and a connecting buckle (3); the shape of the straight connector (2) is adapted to the connecting cavity (11) of the frame profile (1), and both ends of the straight connector (2) are provided with elastic blocks (21) that cooperate with the card holes (14) on the frame profile (1); the connecting buckle (3) is provided with two hook grooves (31) that cooperate with two hooks (15) on the frame profile (1).

6. A lightbox with a fabric panel, comprising a frame, display fabric and a back panel distributed on the front and back sides of the frame, and an LED light assembly fixed to the inner side of the back panel, characterized in that: At least one pair of opposing straight edges of the frame are formed by connecting at least two frame profiles along the length direction using a profile extension connection structure as described in claim 5.

7. A cabinet light box according to claim 6, wherein: It also includes a reinforcing rod (4); the two ends of the reinforcing rod (4) are respectively connected to two connecting buckles (3) on a pair of opposite straight edges of the frame.

8. A cabinet light box according to claim 7, wherein: The connecting buckle (3) is provided with a T-shaped locking block (32); both ends of the reinforcing rod (4) are provided with T-shaped slots (41) that connect with the T-shaped locking block (32).

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