Traffic sign board structure with reflective film easy to replace

Abstract

The utility model discloses a traffic sign board structure with a reflective film easy to replace, which belongs to the technical field of traffic facilities and comprises an old metal bottom plate, a back base film and the reflective film. The back base film comprises a first resin layer, an aluminized layer, a first back adhesive layer and a first stripping back paper layer which are sequentially stacked; the reflective film comprises a second resin layer, a reflective layer, a second gum layer and a second stripping backing paper layer which are sequentially stacked; the back base film is composed of at least one back base segment; and a single back base segment or a plurality of back base segments are spliced along the transverse direction or the longitudinal direction to completely cover the mark surface. The flexible back base film is adopted to replace a traditional thin aluminum plate, the weight of the signboard is greatly reduced, laying of a reflective film base material can be completed only by removing an original character film of an old metal bottom plate, pasting the back base film and assisting in reinforcement through a riveting piece, the bonding strength is ensured, and the service life of the signboard is prolonged. And the problem of disordered layout caused by dense arrangement of rivets in a traditional sleeving method is also avoided.

Description

Technical Field

[0001] This utility model belongs to the field of traffic facility technology, specifically relating to a traffic sign structure with easily replaceable reflective film. Background Technology

[0002] With the rapid expansion of China's road network and the continuous improvement of traffic safety standards, traffic signs, as the core carriers of road information transmission, have seen a significant increase in both quantity and replacement demand. However, a large number of early-installed traffic signs urgently need renovation or replacement due to material aging, decreased reflectivity, or outdated information. Traditional renovation processes are difficult and time-consuming in removing the reflective film from the old signs, especially since residual adhesive requires repeated treatment, leading to extended construction periods and increased labor costs. Statistics show that the renovation of a single sign can take several times longer than conventional replacement, severely hindering the efficiency of road upgrades.

[0003] Currently, the renovation of old signs mainly relies on two technical solutions: high-pressure water jet removal and overlay covering. The former requires high-pressure water jet equipment (costing approximately 100,000-200,000 RMB per unit) to peel off the reflective film using high-pressure water jets, but it suffers from high equipment investment, environmental pollution from waste film removal, and the need for secondary cleaning with organic solvents to remove residual adhesive. The latter uses thin aluminum plates as the substrate to cover the old signs. While avoiding direct removal of the old film, it requires additional aluminum resources and necessitates densely adding rivets for fixation on the old plate, increasing construction complexity and affecting the sign's aesthetics. Furthermore, the inherent defects of aluminum plates as a reflective film substrate further exacerbate the renovation challenges.

[0004] (1) Heavy weight: Aluminum plates have a high density (approximately 2.7 g / cm³). 3 This leads to an increase in the overall weight of the sign, raising installation and transportation costs, especially when working at heights or in remote areas, where the difficulty of handling increases significantly.

[0005] (2) Easily corroded: When exposed to rainwater, ultraviolet rays and de-icing agents for a long time, aluminum plates are prone to oxidation and corrosion, which reduces structural strength and service life, forcing frequent maintenance or replacement.

[0006] (3) Difficulty in recycling: Aluminum plate recycling requires specialized smelting equipment, which is complex and energy-intensive, making it difficult to achieve low-cost recycling, which contradicts the concept of green and sustainable development.

[0007] Therefore, in order to improve construction efficiency and shorten project time, there is an urgent need to provide a traffic sign structure that is easy to replace with reflective film, so as to solve the shortcomings of the existing technology. Summary of the Invention

[0008] To address the problems in related technologies, this utility model proposes a traffic sign structure that allows for easy replacement of reflective film. By setting a flexible backing film between the old metal base plate and the reflective film, it replaces the traditional thin aluminum plate, thereby solving the technical problems of low construction efficiency and long construction time in existing traffic sign renovation projects.

[0009] The technical solution of this utility model is as follows: a traffic sign structure with easily replaceable reflective film, including an old metal base plate, a backing film and a reflective film;

[0010] The old metal base plate has a back plate surface and a marking surface. The back plate surface is fixedly connected to the support frame. The original reflective film on the marking surface is cleaned and a surface to be covered is formed.

[0011] The backing film comprises a first resin layer, an aluminum plating layer, a first adhesive layer, and a first release liner layer stacked sequentially; the reflective film comprises a second resin layer, a reflective layer, a second adhesive layer, and a second release liner layer stacked sequentially; wherein, the reflective layer is a microprism layer or a glass bead layer; the backing film is adhered to the marking surface by the first adhesive layer after the first release liner layer is removed; the reflective film is adhered to the outer surface of the first resin layer of the backing film by the second adhesive layer after the second release liner layer is removed.

[0012] The backing film consists of at least one backing segment; a single backing segment completely covers the marking surface, or multiple backing segments are spliced ​​together in the horizontal or vertical direction to completely cover the marking surface; a riveting member is provided at the circumferential contour edge of the backing segment or at the splicing point of adjacent backing segments, and the riveting member reinforces the backing film on the old metal base plate.

[0013] This invention uses a flexible backing film to replace the traditional thin aluminum plate, greatly reducing the weight of the sign and significantly simplifying handling and installation. After removing the original lettering from the old metal base plate, the backing film is simply adhered and reinforced with rivets to complete the installation of the reflective film substrate, effectively reducing construction costs. Furthermore, by adding rivets at the edges and joints of the backing segments, the bonding strength is ensured while avoiding the cluttered appearance caused by the dense arrangement of rivets in the traditional outer casing method, thus meeting the visual recognition requirements of high-grade roads.

[0014] As a further improvement to the above solution, the backing segments are rectangular or irregularly shaped flexible rolls, and multiple backing segments are used to cover the sign surface in a horizontally laid, vertically laid, or staggered manner. Using flexible rolls as backing segments instead of traditional thin aluminum plates, combined with rectangular or irregular designs and horizontal, vertical, and staggered splicing methods, significantly improves construction convenience and adaptability. Flexible rolls are easy to transport, cut, and lay on-site; the splicing method can be flexibly adjusted according to the shape of the sign surface, reducing construction difficulty; their lightweight characteristics reduce handling intensity and greatly improve the efficiency of replacing reflective film on traffic signs.

[0015] As a further improvement to the above scheme, the joints of adjacent backing segments are either flat-joint structures with an edge gap of no more than 1 mm, or overlapping structures, where the edge of one backing segment overlaps the edge of another backing segment by no less than 5 mm. This joint structure design, by precisely controlling the flat-joint gap to ≤1 mm or the overlap length to ≥5 mm, ensures both the mechanical strength and flatness of the backing membrane joints, preventing unevenness or cracking after the reflective film is laid, and creates a natural visual transition at the seams, significantly improving the overall aesthetics of the signage while meeting the structural stability requirements for long-term outdoor use.

[0016] As a further improvement to the above solution, the riveting component is a blind rivet, the upper edge of which is no higher than the upper surface of the backing film, or the protrusion height is no more than 1 mm. Setting the upper edge of the blind rivet to be no higher than or slightly higher than the upper surface of the backing film ensures a strong connection between the backing film and the base plate, effectively resisting external forces such as wind vibration, while avoiding the surface unevenness caused by the obvious protrusion of traditional rivets, allowing the reflective film to adhere smoothly.

[0017] As a further improvement to the above solution, the riveting components are arranged at intervals along the circumferential contour edge or splicing point of the backing segment, with a spacing of 0.8 meters to 1.2 meters between adjacent riveting components. It should be noted that the backing film is adhered to the sign surface through the first adhesive layer, and thus already possesses strong adhesion. Furthermore, to prevent the edges of the backing film from lifting, the spacing between adjacent riveting components is appropriately configured. This ensures both the bonding strength of the new and old film layers and avoids the cluttered appearance caused by the dense arrangement of rivets in the traditional outer-coat method. The surface flatness and reflectivity of the sign meet the renovation standards and satisfy the visual recognition requirements of high-grade roads.

[0018] As a further improvement to the above solution, the total thickness of the backing film is 1.8 mm to 2.2 mm; wherein, the first resin layer is a weather-resistant polyurethane layer with a thickness of 0.5 mm to 0.8 mm; and the aluminum plating layer has a thickness of 0.02 mm to 0.05 mm. Through optimized layered structure design, the backing film achieves excellent performance at an ultra-thin thickness of 1.8-2.2 mm: the 0.5-0.8 mm weather-resistant polyurethane layer provides excellent anti-aging properties and mechanical strength, while the 0.02-0.05 mm ultra-thin aluminum plating layer ensures reflective performance while significantly reducing weight. The overall thickness is only 1 / 5 of that of traditional aluminum plates, which not only greatly improves construction efficiency but also solves the problems of easy corrosion and difficult recycling of traditional aluminum plates, achieving a perfect balance between lightweight and durability.

[0019] As a further improvement to the above solution, the second resin layer is a UV resin layer or a polyester layer, and a letter film is also adhered to the outer surface of the second resin layer; the microprism layer of the reflective layer is composed of a three-dimensional array of prisms with a height of 0.1 mm to 0.3 mm, or the glass bead layer has a glass bead size of 50 micrometers to 150 micrometers. By using a UV resin or polyester layer as the second resin layer, combined with a 0.1-0.3 mm precision microprism array or a 50-150 μm glass bead reflective layer, the directional reflection performance and weather resistance of the reflective film are significantly improved, enabling the sign to maintain excellent reflective effect under various lighting conditions; at the same time, the design of the external letter film ensures the clear legibility of the sign information and enhances the durability of the overall structure, achieving a high-recognition visual guidance function in all weather conditions.

[0020] As a further improvement to the above solution, the first and second backing layers are acrylic pressure-sensitive adhesive layers with a peel strength of not less than 30 Newtons per 25 mm and a temperature resistance range of -40°C to 80°C. By using acrylic pressure-sensitive adhesive layers with high peel strength (≥30N / 25mm) and a wide temperature range (-40°C to 80°C), a durable and reliable bond is ensured between the backing film and the old sign surface, and between the reflective film and the backing film. This effectively resists thermal expansion and contraction and wind and rain erosion under extreme climatic conditions, enabling the modified traffic signs to maintain structural integrity and functionality under various environmental conditions, significantly extending the service life and maintenance cycle of the signs.

[0021] As a further improvement to the above solution, the original reflective film on the sign surface includes an original base film and an original letter film; the surface to be covered is configured to retain the original base film and remove the original letter film. By selectively retaining the original base film and removing only the original letter film, the problem of substrate damage and residual adhesive treatment caused by completely removing the reflective film in traditional methods is avoided. This also significantly simplifies the surface pretreatment process, greatly shortening the renovation construction time. Simultaneously, the retained original base film provides a flat and reliable bonding foundation for the backing film, ensuring the structural stability after the new reflective film is installed.

[0022] As a further improvement to the above solution, the support frame includes a column and a crossbar. One end of the column is fixed to the ground, and the other end is perpendicularly connected to the crossbar. The crossbar is fixed to the back plate by bolts, riveting, or welding.

[0023] The beneficial effects of this utility model are:

[0024] (1) Simplify the construction process and reduce the renovation cost: The structure of this traffic sign adopts a flexible backing film instead of the traditional thin aluminum plate. Only after removing the original letter film of the old metal base plate, the backing film is pasted and reinforced with rivets to complete the laying of the reflective film substrate. This eliminates the complicated process of traditional high-pressure water gun removal or thin aluminum plate covering, effectively reducing the construction cost.

[0025] (2) Lightweight and corrosion-resistant design enhances the durability of the sign: This traffic sign structure uses a lightweight backing film instead of traditional thin aluminum plates, greatly reducing the weight of the sign. It can be rolled up and packaged, significantly reducing the difficulty of handling and installation, and is also easy to laminate with a laminating machine, making it convenient and quick, especially suitable for high-altitude operations or work on remote road sections. At the same time, the composite surface material formed by the first resin layer and the aluminum-plated layer of the backing film, when bonded with the reflective film of the new sign, can resist rainwater, ultraviolet rays and chemical corrosion for a long time, effectively reducing the frequency of maintenance.

[0026] (3) Both structural reliability and aesthetics are taken into account: By adding rivets at the edges and joints of the back base segments, the bonding strength between the new and old film layers is ensured, and the problem of messy layout caused by dense rivet arrangement in the traditional outer jacket method is avoided. The surface flatness and reflectivity of the sign meet the renovation standards and meet the visual recognition requirements of high-grade roads. Attached Figure Description

[0027] Figure 1 This is a front view of the traffic sign structure in Example 1;

[0028] Figure 2 This is an exploded view of the traffic sign structure in Example 1;

[0029] Figure 3 This is a layer-by-layer exploded view of the old metal base plate, backing film, and reflective film in Example 1;

[0030] Figure 4 This is a schematic diagram of the combination of the old metal base plate, the backing film, and the reflective film in Example 1.

[0031] Figure 5 This is a schematic diagram of the modified traffic sign structure in Example 1;

[0032] Figure 6 This is a schematic diagram of the flat joint structure when the back base segment is horizontally spliced ​​in Example 1;

[0033] Figure 7 This is a schematic diagram of the riveting of the back base segment and the old metal base plate in Example 1;

[0034] Figure 8 This is a schematic diagram of the overlapping structure when the back base segment is horizontally spliced ​​in Example 2;

[0035] Figure 9 This is a schematic diagram of the structure of the back base segment during vertical assembly in Example 3;

[0036] Figure label:

[0037] J1, Traffic sign structure; L1, Edge spacing; L2, Overlap length; L3, Spacing; F1, Waste material;

[0038] 1. Used metal base plate; 11. Sign face; 12. Back panel face;

[0039] 2. Backing film; 21. First resin layer; 22. Aluminum plating layer; 23. First adhesive layer; 24. First release backing paper layer; 2a. Backing segment; 2b. Riveting component;

[0040] 3. Reflective film; 31. Second resin layer; 32. Reflective layer; 33. Second adhesive layer; 34. Second release liner layer;

[0041] 4. Support frame; 41. Column; 42. Horizontal bar. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] Example 1

[0044] like Figures 1-7 As shown, a traffic sign structure with easily replaceable reflective film includes an old metal base plate 1, a backing film 2, and a reflective film 3.

[0045] The old metal base plate 1 has a back panel 12 and a marking panel 11. The back panel 12 is fixedly connected to the support frame 4. The original reflective film 3 on the marking panel 11 is cleaned and a surface to be covered is formed. In this embodiment, the support frame 4 includes a column 41 and a crossbar 42. One end of the column 41 is fixed to the ground, and the other end is perpendicularly connected to the crossbar 42. The crossbar 42 is fixed to the back panel 12 by bolts, riveting, or welding. In this embodiment, the original reflective film 3 on the marking panel 11 includes an original base film and an original letter film. The surface to be covered is configured to retain the original base film and remove the original letter film. By selectively retaining the original base film and removing only the original letter film, the problem of substrate damage and residual adhesive treatment caused by completely removing the reflective film 3 in traditional methods is avoided. The surface pretreatment process is also significantly simplified, greatly shortening the renovation construction time. At the same time, the retained original base film provides a flat and reliable bonding foundation for the backing film 2, ensuring the structural stability of the new reflective film 3 after installation.

[0046] The backing film 2 comprises a first resin layer 21, an aluminum-plated layer 22, a first adhesive layer 23, and a first release paper layer 24, stacked sequentially; the reflective film 3 comprises a second resin layer 31, a reflective layer 32, a second adhesive layer 33, and a second release paper layer 34, stacked sequentially; wherein, the reflective layer 32 is a microprism layer or a glass bead layer; the backing film 2 is adhered to the marking surface 11 by the first adhesive layer 23 after the first release paper layer 24 is removed; the reflective film 3 is adhered to the outer surface of the first resin layer 21 of the backing film 2 by the second adhesive layer 33 after the second release paper layer 34 is removed.

[0047] The backing film 2 is composed of at least one backing segment 2a; a single backing segment 2a completely covers the marking surface 11, or multiple backing segments 2a are spliced ​​together in the horizontal or vertical direction to completely cover the marking surface 11; a riveting member 2b is provided at the circumferential contour edge of the backing segment 2a or at the splicing point of adjacent backing segments 2a, and the riveting member 2b reinforces the backing film 2 onto the old metal base plate 1.

[0048] In this embodiment, the backing segment 2a is a rectangular flexible roll, and multiple backing segments 2a are laid horizontally to cover the sign surface 11. It should be noted that if the old metal base plate 1 can be removed from the support frame 4, it can be directly spliced ​​horizontally to reduce the number of splicing operations. Using flexible roll as the backing segment 2a instead of traditional thin aluminum plate significantly improves construction convenience and adaptability. Flexible roll is easy to transport, cut, and lay on-site; the splicing method can be flexibly adjusted according to the shape of the sign surface 11, reducing construction difficulty; its lightweight characteristics reduce handling intensity and greatly improve the replacement efficiency of the reflective film 3 of the traffic sign.

[0049] In this embodiment, the joint of adjacent back base segments 2a is a flat joint structure, and the distance L1 between their edges does not exceed 1 mm. By precisely controlling the flat joint gap to ≤1 mm, the mechanical strength and flatness of the joint of the back base film 2 are ensured, avoiding unevenness or cracking after the reflective film 3 is laid. It also makes the visual transition at the joint natural, greatly improving the overall aesthetics of the sign, while meeting the structural stability requirements for long-term outdoor use.

[0050] In this embodiment, the riveting component 2b is a blind rivet. After riveting, since the backing film 2 is a flexible roll material, the head of the rivet can compress the backing film 2, ensuring that the upper edge of the rivet head is not higher than the upper surface of the backing film 2, or the protrusion height does not exceed 1 mm. Setting the upper edge of the blind rivet head to be no higher than or slightly higher than the upper surface of the backing film 2 ensures a strong connection between the backing film 2 and the base plate, effectively resisting external forces such as wind vibration, while avoiding the surface unevenness caused by the obvious protrusion of traditional rivets, allowing the reflective film 3 to be flat and adhered.

[0051] In this embodiment, the rivet 2b are arranged at intervals along the circumferential contour edge or splice of the backing segment 2a, with the spacing L3 between adjacent rivet 2b being 0.8 meters to 1.2 meters. It should be noted that the backing film 2 is adhered to the sign surface 11 by the first adhesive layer 23, and already possesses strong adhesion. Furthermore, to prevent the edges of the backing film 2 from lifting, the spacing between adjacent rivet 2b is appropriately configured. This ensures the bonding strength between the old and new film layers while avoiding the cluttered appearance caused by the dense arrangement of rivets in the traditional outer casing method. The surface flatness and reflectivity of the sign meet the renovation standards, satisfying the visual recognition requirements of high-grade roads.

[0052] In this embodiment, the total thickness of the backing film 2 is 1.8 mm to 2.2 mm; wherein, the first resin layer 21 is a weather-resistant polyurethane layer with a thickness of 0.5 mm to 0.8 mm; and the aluminum-plated layer 22 has a thickness of 0.02 mm to 0.05 mm. Through optimized layered structure design, the backing film 2 achieves excellent performance at an ultra-thin thickness of 1.8-2.2 mm: the 0.5-0.8 mm weather-resistant polyurethane layer provides excellent anti-aging properties and mechanical strength, while the 0.02-0.05 mm ultra-thin aluminum-plated layer 22 ensures reflective performance while significantly reducing weight. The overall thickness is only 1 / 5 of that of traditional aluminum plates, which not only greatly improves construction efficiency but also solves the problems of easy corrosion and difficult recycling of traditional aluminum plates, achieving a perfect balance between lightweight and durability.

[0053] In this embodiment, the second resin layer 31 is a UV resin layer or a polyester layer, and a letter film is also adhered to the outer surface of the second resin layer 31; the microprism layer of the reflective layer 32 is composed of a three-dimensional array of prisms with a height of 0.1 mm to 0.3 mm, or the glass bead layer has a glass bead size of 50 micrometers to 150 micrometers. By using a UV resin or polyester layer as the second resin layer 31, combined with a 0.1-0.3 mm precision microprism array or a 50-150 μm glass bead reflective layer 32, the directional reflection performance and weather resistance of the reflective film 3 are significantly improved, enabling the sign to maintain excellent reflective effect under various lighting conditions; at the same time, the design of the external letter film not only ensures the clear legibility of the sign information, but also enhances the durability of the overall structure, achieving a high-recognition visual guidance function in all weather conditions.

[0054] In this embodiment, the first adhesive layer 23 and the second adhesive layer 33 are acrylic pressure-sensitive adhesive layers with a peel strength of not less than 30 Newtons per 25 mm and a temperature resistance range of -40 degrees Celsius to 80 degrees Celsius. It should be noted that traffic signs need to meet the application requirements of various scenarios, enduring high-temperature exposure or low-temperature surroundings 24 hours a day. Traditional adhesive layers are difficult to guarantee adhesive strength. This embodiment, by using an acrylic pressure-sensitive adhesive layer with high peel strength (≥30N / 25mm) and a wide temperature range (-40℃~80℃), ensures a durable and reliable bond between the backing film 2 and the old sign surface, and between the reflective film 3 and the backing film 2, effectively resisting thermal expansion and contraction and wind and rain erosion under extreme climatic conditions. This allows the modified traffic sign to maintain structural integrity and functionality under various environmental conditions, making it particularly suitable for environments such as Northeast China where temperatures are consistently below -20 degrees Celsius, significantly extending the service life and maintenance cycle of the sign.

[0055] In practical applications, the above-described solution of this utility model involves the following steps: First, the old signboard undergoes surface pretreatment. The original base film on the sign surface 11 is retained, and only the original letter film on the surface is removed using mechanical or chemical methods to form a smooth surface to be covered. It should be noted that if the original base film on the surface of the old signboard is loose, powdery, or peeling off, it also needs to be removed. In other embodiments, the original letter film can be left unremoved, and the backing film and reflective film can be directly adhered sequentially. If the original letter film on the sign surface is not removed, the surface of the new traffic sign will have an uneven feel after modification. This selective removal method avoids damage to the substrate caused by completely removing the reflective film 3, and at the same time eliminates the complex residual adhesive treatment process in traditional processes, greatly shortening the pretreatment time.

[0056] Next, the backing membrane 2 is laid and installed. The flexible backing membrane 2 is cut into rectangular segments, and in this embodiment, it is laid horizontally to cover the marking surface 11. Adjacent segments are connected by a flat joint (gap ≤ 1mm) to ensure the structural strength and surface flatness of the joint, and excess waste material F1 of the backing membrane 2 is trimmed off. Blind rivets are used to reinforce the circumferential edges and joints of the backing segments 2a, and the blind rivets press against the backing membrane 2 so that the head of the blind rivet is flush with the surface of the backing membrane 2 or protrudes no more than 1mm, ensuring both connection reliability and surface aesthetics.

[0057] Next, the reflective film 3 is pasted on. A reflective film 3 with a UV resin or polyester protective layer is selected. By peeling off the backing protective layer, the reflective film 3 is precisely aligned and pasted onto the surface of the backing film 2, and a durable bond is formed using acrylic pressure-sensitive adhesive.

[0058] Finally, the overall structure undergoes quality inspection. The focus is on checking the firmness of the rivets, the flatness of the film adhesion, and reflective performance. The entire renovation process requires no large equipment, significantly improving construction efficiency compared to traditional aluminum plate substrate renovations. Furthermore, the renovated signboard is effectively lighter and has a longer service life.

[0059] This embodiment uses a flexible backing film 2 instead of the traditional thin aluminum plate, which greatly reduces the weight of the sign and significantly reduces the difficulty of handling and installation. Only after removing the original lettering film from the old metal base plate 1, the backing film 2 is adhered and reinforced with rivets 2b to complete the laying of the reflective film 3 substrate, effectively reducing construction costs. Furthermore, by adding rivets 2b at the edges and joints of the backing segment 2a, the bonding strength is ensured, and the cluttered appearance caused by the dense arrangement of rivets in the traditional outer casing method is avoided, meeting the visual recognition requirements of high-grade roads.

[0060] Example 2

[0061] like Figure 8 As shown, this is one embodiment of the present invention. The main technical solution of this embodiment is the same as that of Embodiment 1. Features not explained in this embodiment are explained in Embodiment 1 and will not be repeated here. The difference between this embodiment and Embodiment 1 is:

[0062] In this embodiment, the joint between adjacent backing segments 2a is an overlapping structure, wherein the overlap length L2 of one backing segment 2a covering the other backing segment 2a is not less than 5 mm. Specifically, the overlap length L2 in this embodiment can be 5 mm, 8 mm, or 10 mm. An overlap length L2 ≥ 5 mm ensures the mechanical strength of the spliced ​​part of the backing membrane 2, and also makes the visual transition at the seam natural, greatly improving the overall aesthetics of the sign, while meeting the structural stability requirements for long-term outdoor use.

[0063] Example 3

[0064] like Figure 9 As shown, this is one embodiment of the present invention. The main technical solution of this embodiment is the same as that of Embodiment 1. Features not explained in this embodiment are explained in Embodiment 1 and will not be repeated here. The difference between this embodiment and Embodiment 1 is:

[0065] In this embodiment, the backing segment 2a is a rectangular flexible roll, and multiple backing segments 2a are laid longitudinally to cover the sign surface 11. It should be noted that if the old metal base plate 1 is not removed from the support frame 4, it can be directly spliced ​​longitudinally, and gravity will allow the backing segments 2a to hang naturally, ensuring the reliability of the splicing. Its lightweight characteristics reduce the handling intensity and greatly improve the replacement efficiency of the reflective film 3 of the traffic sign.

[0066] Based on the disclosure and teachings of the above specification, those skilled in the art can make changes and modifications to the above embodiments. Therefore, this utility model is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the utility model should also fall within the protection scope of the claims of this utility model. Furthermore, although some specific terms are used in this specification, these terms are only for convenience of explanation and do not constitute any limitation on this utility model.

Claims

1. A traffic sign structure with easily replaceable reflective film, comprising a used metal base plate, a backing film, and a reflective film; characterized in that: The old metal base plate has a back plate surface and a marking surface. The back plate surface is fixedly connected to the support frame. The original reflective film on the marking surface is cleaned and a surface to be covered is formed. The backing film comprises a first resin layer, an aluminum plating layer, a first adhesive layer, and a first release liner layer stacked sequentially; the reflective film comprises a second resin layer, a reflective layer, a second adhesive layer, and a second release liner layer stacked sequentially; wherein, the reflective layer is a microprism layer or a glass bead layer; the backing film is adhered to the marking surface by the first adhesive layer after the first release liner layer is removed; the reflective film is adhered to the outer surface of the first resin layer of the backing film by the second adhesive layer after the second release liner layer is removed. The backing film consists of at least one backing segment; a single backing segment completely covers the marking surface, or multiple backing segments are spliced ​​together in the horizontal or vertical direction to completely cover the marking surface; a riveting member is provided at the circumferential contour edge of the backing segment or at the splicing point of adjacent backing segments, and the riveting member reinforces the backing film on the old metal base plate.

2. The traffic sign structure with easily replaceable reflective film according to claim 1, characterized in that: The backing segment is a rectangular or irregularly shaped flexible roll material, and multiple backing segments are laid horizontally, vertically, or staggered to cover the marking surface.

3. The traffic sign structure with easily replaceable reflective film according to claim 2, characterized in that: The joint between adjacent back base segments is a flat joint structure with the edge spacing not exceeding 1 mm; or an overlapping structure, where the edge of one back base segment covers the edge of another back base segment with an overlap length of not less than 5 mm.

4. The traffic sign structure with easily replaceable reflective film according to claim 1, characterized in that: The rivet is a blind rivet, the upper edge of its head is not higher than the upper surface of the back base film, or the protrusion height is not more than 1 mm.

5. The traffic sign structure with easily replaceable reflective film according to claim 4, characterized in that: The rivets are arranged at intervals along the circumferential contour edge or splice of the back base segment, with the interval between adjacent rivets being 0.8 meters to 1.2 meters.

6. The traffic sign structure with easily replaceable reflective film according to claim 1, characterized in that: The total thickness of the backing film is 1.8 mm to 2.2 mm; wherein, the first resin layer is a weather-resistant polyurethane layer with a thickness of 0.5 mm to 0.8 mm; and the aluminum plating layer has a thickness of 0.02 mm to 0.05 mm.

7. The traffic sign structure with easily replaceable reflective film according to claim 1, characterized in that: The second resin layer is a UV resin layer or a polyester layer, and a letter film is also adhered to the outer surface of the second resin layer; the microprism layer of the reflective layer is composed of a three-dimensional array of prisms with a height of 0.1 mm to 0.3 mm, or the glass bead layer has a glass bead size of 50 micrometers to 150 micrometers.

8. The traffic sign structure with easily replaceable reflective film according to claim 1, characterized in that: The first and second backing layers are acrylic pressure-sensitive adhesive layers with a peel force of not less than 30 Newtons per 25 mm and a temperature resistance range of -40 degrees Celsius to 80 degrees Celsius.

9. The traffic sign structure with easily replaceable reflective film according to claim 1, characterized in that: The original reflective film on the sign surface includes an original base film and an original letter film; the surface to be covered is configured to retain the original base film and remove the original letter film.

10. The traffic sign structure with easily replaceable reflective film according to claim 1, characterized in that: The support frame includes uprights and crossbars. One end of the upright is fixed to the ground, and the other end is perpendicularly connected to the crossbar. The crossbar is fixed to the back plate by bolts, riveting, or welding.

Images