A double-sided luminous road traffic sign

Abstract

This invention discloses a double-sided luminous road traffic sign, comprising four frame members, two panel assemblies, and two light source panel assemblies. Each frame member is composed of two detachably spliced ​​frame rods. One side of each frame rod is used to fix the panel assembly, and the middle of the other side of the frame rod has an axially arranged boss. One side of the boss forms a bearing surface, allowing the two frame rods to be spliced ​​together by supporting each other through the boss's bearing surface. The middle of the other side of the boss has an axially arranged rib. The inward-facing side of the rib cooperates with the frame rod to form a first axially arranged slot for inserting and fixing one light source panel assembly. The outward-facing side of the rib cooperates with the other spliced ​​frame rod to form a second axially arranged slot for inserting and fixing another light source panel assembly. This invention has the advantages of simple and stable structure, convenient and quick installation and maintenance, low maintenance cost, and good traffic indication effect.

Description

Technical Field

[0001] This invention mainly relates to the field of road traffic sign manufacturing, and in particular to a double-sided luminous road traffic sign. Background Technology

[0002] With the development of road traffic, the beautification of roads, and the increasing demands for traffic safety, the application of luminous road traffic signs (also known as luminous road traffic signs) is becoming more and more common. Luminous road traffic signs can serve both as normal daytime indications and as reflective indications at night. Simultaneously, when the back light source panel emits light at night, it can also transmit light, allowing the front to actively reflect light for indication. Existing technology involves a double-sided luminous sign, where both sides of the sign have panels, and two light source panels are installed inside to illuminate both the front and back panels. This type of double-sided luminous sign has the following technical problems:

[0003] Firstly, with traditional single-sided signs, maintenance of the internal light source panel requires opening the back panel. However, double-sided illuminated signs, with panels on both the front and back, necessitate removing one or both panels. Since these panels are covered with reflective film, this inevitably damages the fragile reflective film. This significantly increases the difficulty of maintenance and the cost of replacement. In some cases, improper re-application of the reflective film not only greatly reduces the sign's aesthetics but, in severe cases, can even lead to traffic accidents due to peeling film and poor traffic indication.

[0004] Secondly, the existing double-sided illuminated signs have two firmly installed light source panels, which makes it very troublesome to disassemble the light source panels during later maintenance. The maintenance time is long and the maintenance work is hard, which greatly affects the reuse of the signs, indirectly affects the normal traffic indication on the road, and increases traffic pressure. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a double-sided luminous road traffic sign that is simple and stable in structure, convenient and quick to install and maintain, low in maintenance cost, and has good traffic indication effect.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A double-sided luminous road traffic sign includes four frame members, two panel assemblies, and two light source panel assemblies. Each frame member is composed of two detachable frame rods. One side of each frame rod is used to fix the panel assembly, and the middle of the other side of each frame rod has a boss along the axial direction. One side of the boss forms a bearing surface for the two frame rods to support each other through the boss bearing surface to form a splice. The middle of the other side of the boss has a rib along the axial direction. The inward side of the rib cooperates with the frame rod to form a first slot arranged along the axial direction for inserting and fixing one light source panel assembly. The outward side of the rib cooperates with the other frame rod to form a second slot arranged along the axial direction for inserting and fixing another light source panel assembly.

[0008] As a further improvement of the present invention, the frame rod includes a hollow tube arranged along the axis. The outer side of the tube is used to support and fix the panel assembly. The boss is provided on the inner side of the tube. Two adjacent frame rods are connected by elbows. Both ends of the elbows are provided with two outwardly protruding limiting blocks. During installation, the two limiting blocks are respectively inserted into the two tubes of the adjacent frame to form a limiting connection with the frame and to make the two frame rods of the frame form a splicing limiting connection.

[0009] As a further improvement of the present invention, the elbow is provided with a protruding first bending edge on both sides, and a first limiting groove is formed between the first bending edge and the elbow to allow the panel assembly to be snapped into the first limiting groove after installation to form a limiting fixation.

[0010] As a further improvement of the present invention, each of the outer side walls of the frame is also provided with a binding rod, and each side of the binding rod is provided with a second bent edge arranged along the axial direction. A second limiting groove is formed between the two second bent edges to be used to clamp and limit the frame and the two panel assemblies installed on both sides of the frame together in the second limiting groove after installation.

[0011] As a further improvement of the present invention, the edge banding rod is provided with multiple bent steel strips, which are arranged along the axial direction of the edge banding rod to make both second bent edges elastic, so as to tightly snap the frame and the two panel assemblies on both sides of the frame into the second limiting slot.

[0012] As a further improvement of the present invention, an elastic layer is coated on the side of the second bent edge that contacts the panel assembly, for use after installation to allow the panel assembly to press the elastic layer to form a sealed connection between the second bent edge and the panel assembly.

[0013] As a further improvement of the present invention, the inner wall of the edge banding rod is provided with two parallel limiting strips along the axial direction, which are used to be inserted into the first slot and the second slot formed on the outer wall of the frame respectively after installation so that the edge banding rod and the frame form a limiting position.

[0014] As a further improvement of the present invention, a raised limiting rib and a recessed limiting groove are arranged axially on the bearing surface of the boss. The limiting rib and the limiting groove are arranged in parallel. When splicing, the limiting rib of one of the frame rods is inserted into the limiting groove of the other frame rod to form mutual limiting, so as to make the splicing of the two frame rods stable.

[0015] As a further improvement of the present invention, the panel assembly includes an opaque panel and a reflective film pasted on the opaque panel. The opaque panel has a cutout area according to the traffic sign graphics. The light source panel assembly is provided for the cutout area to illuminate the reflective film in the cutout area to form a semi-transparent luminous road traffic sign.

[0016] As a further improvement of the present invention, the panel assembly includes a light-transmitting panel and a reflective film adhered to the light-transmitting panel, and the light source panel assembly illuminates the entire light-transmitting panel to form a fully transparent luminous road traffic sign.

[0017] Compared with the prior art, the advantages of the present invention are as follows:

[0018] Firstly, the double-sided luminous road traffic sign of this invention innovatively transforms the original single frame into a design composed of two detachable frame rods. The special structural design of the frame rods allows them to cooperate to form a first slot and a second slot. This enables both light source board components to be fixed in place using the slots during installation, eliminating the need for other fixing components, greatly saving production costs and simplifying the production process.

[0019] Secondly, the double-sided luminous road traffic sign of this invention innovatively transforms the original single frame into a design composed of two detachable frame rods. This allows for easy removal of the light source panel assembly, which was originally secured, during later maintenance by simply disassembling and separating the two frame rods. The panel assembly, originally fixed to the frame rods, does not need to be removed and can remain securely connected, preventing damage to the panel or reflective film. This significantly reduces maintenance difficulty and replacement costs, effectively ensuring the sign's aesthetics and traffic guidance effect. Furthermore, this disassembly and maintenance method makes removing the light source panel simpler and faster, greatly shortening maintenance time and reducing the waiting time for the sign to be put back into use, thus significantly improving road traffic safety.

[0020] Thirdly, the double-sided luminous road traffic sign of this invention utilizes an elbow that serves two functions: First, when acting as a connector between two adjacent frame sections, the four limiting blocks at both ends, inserted into the hollow tubes of the two adjacent frame sections, ensure a stable connection between the two sections, forming the overall frame structure of the sign. Second, this invention innovatively designs a single frame section as a detachable splice of two frame rods. By simultaneously inserting the two limiting blocks at one end of the elbow into the hollow tubes of the two frame rods belonging to the same frame, the two frame rods are securely connected. Furthermore, the elbow can be easily removed to separate the two frame rods, facilitating the replacement and maintenance of the light source panel assembly. In short, it effectively balances connection stability and ease of disassembly.

[0021] Fourth, in the double-sided luminous road traffic sign of this invention, the bend forms a wrap-around limiting effect on the four corners of the panel assembly through the first bending edge. This increases the stability of the bend itself by tightening, and also further increases the stability of the panel assembly through wrapping, ultimately increasing the overall structural stability of the sign. Second, it improves the sealing effect at the four corners of the panel assembly, especially in conjunction with the edge-wrapping rod described below, so that the panel assembly is completely wrapped around all four sides, further improving the sealing of the panel assembly and preventing rainwater from entering the interior of the sign.

[0022] Fifth, the double-sided luminous road traffic sign of this invention also has a edging rod wrapped around the outer wall of each frame. The edging rod has several technical effects: First, it further clamps and limits the two frame rods belonging to the same frame within the second limiting groove, which well balances the connection stability and ease of disassembly of the two frame rods. Second, through cooperation with the elbow, it covers the perimeter of the panel assembly, improving the sealing of the panel assembly and preventing rainwater from entering the interior of the sign.

[0023] Sixth, the double-sided luminous road traffic sign of the present invention further features two parallel limiting strips axially arranged on the inner wall of the edging rod, which can be precisely inserted into the first and second slots facing outwards, further improving the fixing effect of the edging rod. The stable installation of the edging rod will also further ensure the covering effect of the two frame rods. Therefore, the two support and cooperate with each other.

[0024] Seventh, the double-sided luminous road traffic sign of the present invention further incorporates limiting ribs and limiting grooves, enabling the two frame rods to achieve a nested limiting effect, resulting in better stability and further improving the overall stability of the sign. Attached Figure Description

[0025] Figure 1 This is a schematic diagram illustrating the three-dimensional structure of the double-sided luminous road traffic sign of the present invention when it is not fully assembled. Figure 1 .

[0026] Figure 2 This is a schematic diagram illustrating the three-dimensional structure of the double-sided luminous road traffic sign of the present invention when it is not fully assembled. Figure 2 .

[0027] Figure 3 This is a schematic diagram of the three-dimensional structure of the double-sided luminous road traffic sign of the present invention when it is assembled in place.

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure principle of the frame rod of the present invention.

[0029] Figure 5 This is a schematic diagram of the cross-sectional structure of the frame rod of the present invention.

[0030] Figure 6 yes Figure 7 A magnified schematic diagram of a local structure.

[0031] Figure 7 This is a schematic diagram of the internal cross-sectional structure of the double-sided luminous road traffic sign of the present invention during assembly. Figure 1 .

[0032] Figure 8 This is a schematic diagram of the internal cross-sectional structure of the double-sided luminous road traffic sign of the present invention during assembly. Figure 2 .

[0033] Figure 9 This is a schematic diagram illustrating the structural principle of the two side frame rods of the present invention when they are spliced ​​together.

[0034] Figure 10 This is a schematic diagram of the three-dimensional structure of the elbow of the present invention.

[0035] Figure 11 This is a schematic diagram of the partial three-dimensional structure principle of the edge banding rod of the present invention.

[0036] The labels in the diagram represent:

[0037] 1. Frame; 11. Frame rod; 12. Boss; 13. Rib; 14. First slot; 15. Second slot; 16. Tube body; 17. Limiting rib; 18. Limiting groove; 2. Elbow; 21. Limiting block; 22. First bend; 23. First limiting slot; 3. Panel assembly; 4. Light source board assembly; 5. Edge banding rod; 51. Second bend; 52. Second limiting slot; 53. Bending steel strip; 54. Limiting strip. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0039] like Figures 1 to 11As shown, this invention provides a double-sided luminous road traffic sign, comprising four frame members 1, two panel assemblies 3, and two light source plate assemblies 4. Each frame member 1 is composed of two detachably spliced ​​frame rods 11. One side of the frame rod 11 is used to fix the panel assembly 3, and the middle of the other side of the frame rod 11 is provided with a boss 12 along the axial direction. One side of the boss 12 forms a bearing surface, which is used to allow the two frame rods 11 to support each other through the bearing surface of the boss 12 to form a splice. The middle of the other side of the boss 12 is provided with a rib 13 along the axial direction. The inward side of the rib 13 cooperates with the frame rod 11 to form a first slot portion 14 arranged along the axial direction for inserting and fixing one light source plate assembly 4. The outward side of the rib 13 cooperates with the other spliced ​​frame rod 11 to form a second slot portion 15 arranged along the axial direction for inserting and fixing another light source plate assembly 4. The specific implementation principle is as follows:

[0040] Each border 1 of the logo of this invention is composed of two border rods 11 that are detachably joined together, such as... Figure 6 , Figure 7 , Figure 8 As shown, during manufacturing, frame rod 11 A is placed normally, frame rod 11 B is inverted, and the bosses 12 of both are passed through the bearing surface (the bearing surface is as shown). Figure 5 As shown in the diagram (W), the two frame rods 11 (A and B) support each other, allowing them to be joined together to form a frame 1. Similarly, the two frame rods 11 (C and D) are joined together to form another frame 1. At this time, the lower end of the light source plate assembly 4 (E) can be inserted into the second slot portion 15 formed between the protruding ribs 13 of the frame rods 11 (C and D) for fixation, and the upper end can be inserted into the second slot portion 15 formed between the protruding ribs 13 of the frame rods 11 (A and B) for fixation. Similarly, the upper end of the light source plate assembly 4 (F) can be inserted into the first slot portion 14 of the frame rod (B) for fixation, and the lower end can be inserted into the first slot portion 14 of the frame rod (D). At the same time, the upper and lower ends of the panel assembly 3 (H) are fixed (e.g., by adhesive or riveting) to the frame rods 11 (A and C) respectively, and the upper and lower ends of the panel assembly 3 (K) are fixed (e.g., by adhesive or riveting) to the frame rods 11 (B and D) respectively. Regarding the fixing method of the two frame rods 11 of the same frame 1, they can be fixed by using the elbow 2 and / or the edge banding rod 5 as described below, or they can be fixed directly by screws. In any case, it is sufficient to make the two frame rods 11 detachably spliced ​​together.

[0041] When maintenance is required, the two frame rods 11 that were originally spliced ​​and fixed together can be disassembled and separated. At this time, the light source panel assembly 4, which was originally clamped and limited, can be easily removed for maintenance. The panel assembly 3, which was originally fixed to the frame rod 11, does not need to be removed and can continue to maintain a fixed connection with the frame rod 11, that is, it will not damage the panel or reflective film on the panel assembly 3. Through the above special design, the following technical advantages are achieved:

[0042] Firstly, the double-sided luminous road traffic sign of this invention innovatively designs the original single frame 1 into a detachable splice of two frame rods 11. The special structural design of the frame rods 11 allows the two to cooperate to form a first slot 14 and a second slot 15. This allows both light source board assemblies 4 to be fixed by using the slots during installation, without the need for other fixing components, which greatly saves production costs and simplifies the production process.

[0043] Secondly, the double-sided luminous road traffic sign of this invention innovatively transforms the original single frame 1 into a detachable splice of two frame rods 11. This allows for easy removal and maintenance of the light source plate assembly 4, which was originally clamped and limited, by simply disassembling and separating the two frame rods 11. The panel assembly 3, originally fixed to the frame rods 11, does not need to be removed and can remain fixedly connected to the frame rods 11, thus preventing damage to the panel and reflective film on the panel assembly 3. This significantly reduces the difficulty of maintenance and the cost of replacement, effectively ensuring the aesthetics of the sign and its traffic guidance effect. Moreover, this disassembly and maintenance method makes removing the light source plate simpler and faster, greatly shortening maintenance time and reducing the waiting time for the sign to be put back into use, thus significantly improving road traffic safety.

[0044] like Figures 1 to 5 , Figure 10As shown, further, in a preferred embodiment, the frame rod 11 includes a hollow tube 16 arranged along the axis. The outer surface of the tube 16 is used to support and fix the panel assembly 3. The boss 12 is provided on the inner surface of the tube 16. Two adjacent frame rods 1 are connected by elbows 2. Both ends of the elbow 2 are provided with two outwardly protruding limiting blocks 21. During installation, the two limiting blocks 21 are respectively inserted into the two tubes 16 of the adjacent frame rods 1 to form a limiting connection with the frame rods 1 and to form a splicing limiting for the two frame rods 11 of the frame rods 1. That is, the elbow 2 achieves two functions: first, when used as a connector between two adjacent frame rods 1, since the four limiting blocks 21 at both ends are respectively inserted into the hollow tubes 16 of the two adjacent frame rods 1, the two frame rods 1 are connected firmly, forming the overall frame structure of the sign. Secondly, this invention innovatively designs the original single frame 1 into a detachable splice of two frame rods 11. By simultaneously inserting the two limiting blocks 21 at one end of the elbow 2 into the hollow tube 16 of the two frame rods 11 belonging to the same frame 1, the two frame rods 11 are securely connected. However, by simply removing the elbow 2, the two frame rods 11 can be immediately separated, facilitating the replacement and maintenance of the light source board assembly 4. In other words, it effectively balances connection stability and ease of disassembly.

[0045] In this embodiment, each limiting block 21 is provided with a fixing threaded hole, which facilitates the further detachable fixing connection between the limiting block 21 and the tube body 16 by screws after insertion.

[0046] like Figures 1 to 3 , Figure 10 As shown, further, in a preferred embodiment, the elbow 2 has a protruding first bending edge 22 on both sides, and a first limiting groove 23 is formed between the first bending edge 22 and the elbow 2, so that the panel assembly 3 is snapped into the first limiting groove 23 after installation to form a limiting fixation. That is, the elbow 2 forms a covering limiting at the four corners of the panel assembly 3 through the first bending edge 22. Firstly, the clamping further increases the stability of the elbow 2 itself, and the covering further increases the stability of the panel assembly 3, ultimately further increasing the overall structural stability of the sign. Secondly, it improves the sealing effect at the four corners of the panel assembly 3, especially in conjunction with the edge-wrapping rod 5 described below, so that the panel assembly 3 is covered on all four sides, further improving the sealing of the panel assembly 3 and preventing rainwater from entering the interior of the sign.

[0047] like Figures 1 to 8 , Figure 11As shown, further, in a preferred embodiment, each outer wall of the frame 1 is also provided with an edge-binding rod 5. Each side of the edge-binding rod 5 has a second bent edge 51 arranged axially. A second limiting groove 52 is formed between the two second bent edges 51 to secure the frame 1 and the two panel assemblies 3 installed on both sides of the frame 1 together within the second limiting groove 52 after installation. The edge-binding rod 5 has several technical advantages: First, it further secures the two frame rods 11 belonging to the same frame 1 within the second limiting groove 52, effectively balancing the connection stability and ease of disassembly of the two frame rods 11. Second, through cooperation with the elbow 2, it covers the perimeter of the panel assembly 3, improving the sealing of the panel assembly 3 and preventing rainwater from entering the interior of the sign.

[0048] like Figure 11 As shown, further, in a preferred embodiment, the edging rod 5 is provided with multiple bent steel strips 53. These multiple bent steel strips 53 are arranged axially along the edging rod 5 to ensure that both second bent edges 51 are elastic, thereby tightly securing the frame 1 and the two panel assemblies 3 on both sides of the frame 1 into the second limiting slots 52. The multiple bent steel strips 53 further increase the elasticity of the second bent edges 51, resulting in a better covering and pressing effect.

[0049] Furthermore, in a preferred embodiment, an elastic layer is coated on the side of the second bent edge 51 that contacts the panel assembly 3, for use after installation to allow the panel assembly 3 to press the elastic layer to form a sealed connection between the second bent edge 51 and the panel assembly 3.

[0050] like Figures 6 to 8 As shown, further, in a preferred embodiment, two parallel limiting strips 54 are provided axially on the inner wall of the edge banding rod 5. These strips are used to insert into the first slot portion 14 and the second slot portion 15 formed on the outer wall of the frame 1 after installation, so that the edge banding rod 5 and the frame 1 are positioned accordingly. As mentioned above, the special structural design of the frame rod 11 allows the two to cooperate with each other. The inward side forms the first slot portion 14 and the second slot portion 15 for installing the two light source board assemblies 4. At the same time, the outward side will inevitably also form the first slot portion 14 and the second slot portion 15. Furthermore, the present invention provides two parallel limiting strips 54 axially on the inner wall of the edge banding rod 5, which can be inserted into the outward first slot portion 14 and the second slot portion 15, further improving the fixing effect of the edge banding rod 5. The stable installation of the edge banding rod 5 will also further ensure the covering effect of the two frame rods 11. Therefore, the two support and cooperate with each other.

[0051] like Figure 9As shown, further, in a preferred embodiment, a raised limiting rib 17 and a recessed limiting groove 18 are arranged axially on the bearing surface of the boss 12. The limiting rib 17 and the limiting groove 18 are arranged in parallel. During splicing, the limiting rib 17 of one frame rod 11 is inserted into the limiting groove 18 of another frame rod 11 to form mutual limiting, thereby making the splicing of the two frame rods 11 stable. In order to further stabilize the splicing of the two frame rods 11, the present invention further designs the limiting rib 17 and the limiting groove 18, so that the two frame rods 11 achieve a nested limiting effect, resulting in better stability. In this embodiment, the cross-sections of the limiting rib 17 and the limiting groove 18 are both circular, so that the limiting rib 17 needs to be gradually inserted into the limiting groove 18 from the end, that is, the two frame rods 11 gradually insert into each other from the end. This nested limiting structure makes the splicing of the two frame rods 11 more stable, which further improves the overall stability of the sign.

[0052] Furthermore, in a preferred embodiment, the panel assembly 3 includes an opaque panel and a reflective film adhered to the opaque panel. The opaque panel has cutout areas according to traffic sign graphics. The light source panel assembly 4 is positioned over the cutout areas to illuminate the reflective film in those areas, forming a semi-transparent luminous road traffic sign. Figures 1 to 3 The image shows a semi-transparent luminous road traffic sign. However, in order to display the internal light source panel assembly 4 through the cutout area, the reflective film pasted on the opaque panel is hidden in the image.

[0053] Furthermore, in a preferred embodiment, the panel assembly 3 includes a light-transmitting panel and a reflective film adhered to the light-transmitting panel, and the light source panel assembly 4 illuminates the entire light-transmitting panel to form a fully transparent luminous road traffic sign.

[0054] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any person skilled in the art can make many possible variations and modifications to the technical solutions of the present invention, or modify them into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the present invention, should fall within the protection scope of the present invention.

Claims

1. A double-sided luminous road traffic sign, characterized in that: It includes four frame pieces (1), two panel assemblies (3), and two light source board assemblies (4). Each frame piece (1) is composed of two frame rods (11) that are detachably spliced ​​together. One side of the frame rod (11) is used to fix the panel assembly (3). A boss (12) is provided axially in the middle of the other side of the frame rod (11). One side of the boss (12) forms a bearing surface, which is used to allow the two frame rods (11) to be spliced ​​together after being supported by each other through the bearing surface of the boss (12). A rib (13) is provided axially in the middle of the other side of the boss (12). The side of the rib (13) facing inward has a rib (13) on the other side of the boss (12). The frame rod (11) cooperates with the frame rod (11) to form a first slot (14) arranged along the axis for inserting and fixing a light source plate assembly (4). The other side of the rib (13) facing outward cooperates with the other frame rod (11) to form a second slot (15) arranged along the axis for inserting and fixing another light source plate assembly (4). The frame rod (11) includes a hollow tube (16) arranged along the axis. Each frame (1) is also covered with a binding rod (5) on its outer side wall to clamp and limit the frame (1) and the two panel assemblies (3) installed on both sides of the frame (1).

2. The double-sided luminous road traffic sign according to claim 1, characterized in that: The outer side of the tube (16) is used to support and fix the panel assembly (3). The boss (12) is located on the inner side of the tube (16). The two adjacent frame (1) are connected by elbows (2). Both ends of the elbow (2) are provided with two outwardly protruding limiting blocks (21). During installation, the two limiting blocks (21) are inserted into the two tubes (16) of the adjacent frame (1) to form a limiting connection with the frame (1) and to make the two frame rods (11) of the frame (1) form a splicing limiting.

3. The double-sided luminous road traffic sign according to claim 2, characterized in that: The elbow (2) has a protruding first bending edge (22) on both sides. A first limiting groove (23) is formed between the first bending edge (22) and the elbow (2) to allow the panel assembly (3) to be inserted into the first limiting groove (23) after installation to form a limiting fixation.

4. The double-sided luminous road traffic sign according to claim 1, characterized in that: The edge banding rod (5) has a second bent edge (51) arranged along the axial direction on both sides. A second limiting groove (52) is formed between the two second bent edges (51) to clamp the frame (1) and the two panel assemblies (3) installed on both sides of the frame (1) together and limit them in the second limiting groove (52) after installation.

5. The double-sided luminous road traffic sign according to claim 4, characterized in that: The edge banding rod (5) is provided with multiple bent steel strips (53). The multiple bent steel strips (53) are arranged along the axial direction of the edge banding rod (5) to make the two second bent edges (51) elastic, so as to tightly insert the frame (1) and the two panel assemblies (3) on both sides of the frame (1) into the second limiting slot (52).

6. The double-sided luminous road traffic sign according to claim 4, characterized in that: An elastic layer is coated on the side of the second bend edge (51) that contacts the panel assembly (3), which is used to compress the elastic layer after installation so that a sealed connection is formed between the second bend edge (51) and the panel assembly (3).

7. The double-sided luminous road traffic sign according to claim 4, characterized in that: The inner wall of the edge banding rod (5) is provided with two parallel limiting strips (54) along the axial direction. After installation, they are respectively inserted into the first slot (14) and the second slot (15) formed on the outer wall of the frame (1) so that the edge banding rod (5) and the frame (1) form a limit.

8. The double-sided luminous road traffic sign according to claim 1, characterized in that: On the bearing surface of the boss (12), there is a raised limiting rib (17) and a recessed limiting groove (18) arranged along the axial direction. The limiting rib (17) and the limiting groove (18) are arranged in parallel. When splicing, the limiting rib (17) of one of the frame rods (11) is inserted into the limiting groove (18) of another frame rod (11) to form mutual limiting, so that the two frame rods (11) are spliced ​​stably.

9. The double-sided luminous road traffic sign according to claim 1, characterized in that: The panel assembly (3) includes an opaque panel and a reflective film pasted on the opaque panel. The opaque panel has a cutout area according to the traffic sign graphics. The light source panel assembly (4) is set for the cutout area to illuminate the reflective film in the cutout area to form a semi-transparent luminous road traffic sign.

10. The double-sided luminous road traffic sign according to claim 1, characterized in that: The panel assembly (3) includes a light-transmitting panel and a reflective film pasted on the light-transmitting panel, and the light source panel assembly (4) illuminates the entire light-transmitting panel to form a fully transparent luminous road traffic sign.

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