Temperature early warning signboard for power equipment

Abstract

The invention relates to a temperature early warning signboard for power equipment, and the signboard comprises a substrate which is provided with a first surface; the plurality of temperature sensing film layers are arranged on the first surface at intervals; the fluorescent film layers are located between the adjacent temperature sensing film layers; and the protective layer wraps the substrate, the temperature sensing film layer and the fluorescent film layer. According to the invention, a multi-stage temperature early warning function and a multi-color night warning effect are added, and the early warning accuracy and the warning striking degree are improved. The problem that in the prior art, power equipment does not have a temperature early warning function is solved.

Description

Technical Field

[0001] The present application relates to the technical field of safety warnings, and in particular to a temperature warning sign for electric power equipment. Background Art

[0002] In the prior art, temperature warning signs for transformers are mainly made of traditional metal plates or plastic plates, and some basic warning information or numbers may be marked on the surface through printing technology. These temperature warning signs usually do not have temperature warning functions, and rarely use special materials to enhance their visibility and durability in different environments. For occasions where temperature changes need to be monitored, it may be necessary to install temperature sensors and alarm systems separately on the transformer, and these systems are often independent of the temperature warning signs, which increases costs and installation complexity. In addition, the visibility of existing temperature warning signs is poor at night or in low-light environments, and there is a lack of active luminous or reflective designs to enhance the night warning effect. Summary of the invention

[0003] The present application provides a temperature warning sign for electric power equipment to solve the problem in the related art that electric power equipment does not have a temperature warning function.

[0004] According to one aspect of the present application, a temperature warning sign for electric power equipment is provided, comprising: a substrate having a first surface; a plurality of temperature-sensitive film layers spaced apart on the first surface; a fluorescent film layer located between adjacent temperature-sensitive film layers; and a protective layer wrapping the substrate, the temperature-sensitive film layer and the fluorescent film layer.

[0005] Optionally, the temperature warning sign further includes a through hole penetrating the fluorescent film layer and the substrate.

[0006] Optionally, the temperature warning sign further includes: a heat dissipation structure, wherein the heat dissipation structure penetrates the fluorescent film layer and the substrate.

[0007] Optionally, the substrate comprises a mirror substrate.

[0008] Optionally, the material forming the temperature-sensitive film layer includes a temperature-sensitive color-changing material and a fluorescent material, and the weight ratio of the temperature-sensitive color-changing material to the fluorescent material is (1:2) to (2:1).

[0009] Optionally, the diameter of the through holes is 5 mm to 10 mm, and the number of the through holes is at least 4.

[0010] Optionally, the size of the heat dissipation structure is 3 mm to 6 mm, and the distribution density is at least 1 per square centimeter.

[0011] Optionally, the temperature warning sign further includes a query mark, the query mark includes an electronic tag, and the electronic tag is located on the protective layer.

[0012] Optionally, the material of the protective layer includes acrylic and / or polyurethane material.

[0013] Optionally, the thickness of the protective layer is 0.1 mm to 0.3 mm.

[0014] The temperature warning sign for power equipment of the present application includes: a substrate, multiple temperature-sensitive film layers, a fluorescent film layer and a protective layer. The substrate has a first surface; multiple temperature-sensitive film layers are arranged on the first surface at intervals; the fluorescent film layer is located between adjacent temperature-sensitive film layers; and the protective layer wraps the substrate, the temperature-sensitive film layer and the fluorescent film layer. When the temperature-sensitive film layer senses different gradients of temperature, it will display different colors to warn, and the fluorescent film layer can be more eye-catching at night. The present application adds a temperature-sensitive film layer and a fluorescent film layer, so that the temperature warning sign has a multi-level temperature warning function and a multi-color night warning effect, thereby improving the accuracy of the warning and the conspicuousness of the warning. It solves the problem that power equipment in the related art does not have a temperature warning function. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 It is a structural schematic diagram of a temperature warning sign for electric power equipment provided according to an embodiment of the present application;

[0017] Figure 2 It is a structural schematic diagram of a process for preparing a temperature warning sign for electric equipment provided in an embodiment of the present application.

[0018] The above drawings include the following reference numerals:

[0019] 11. Substrate; 12. Temperature-sensitive film layer; 13. Fluorescent film layer; 14. Protective layer; 15. Through hole; 16. Heat dissipation structure. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0021] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0022] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0023] As described in the prior art, the temperature warning signs for transformers are mainly made of traditional metal plates or plastic plates, and some basic warning information or numbers may be marked on the surface through printing technology. These temperature warning signs usually do not have a temperature warning function, and rarely use special materials to enhance their visibility and durability in different environments. For occasions where temperature changes need to be monitored, it may be necessary to install temperature sensors and alarm systems separately on the transformer, and these systems are often independent of the temperature warning signs, which increases costs and installation complexity. In addition, the visibility of existing temperature warning signs is poor at night or in low-light environments, and there is a lack of active luminous or reflective designs to enhance the night warning effect.

[0024] In order to solve the above problems, the present application provides a temperature warning sign for electric equipment, such as Figure 1 As shown, it includes: a substrate 11 having a first surface; a plurality of temperature-sensitive film layers 12 arranged at intervals on the first surface; a fluorescent film layer 13 located between adjacent temperature-sensitive film layers 12, and the material of the temperature-sensitive film layer 12 includes a thermochromic material; and a protective layer 14 wrapping the substrate 11, the temperature-sensitive film layer 12 and the fluorescent film layer 13.

[0025] By adding a temperature-sensitive film layer and a fluorescent film layer to the temperature warning sign, the temperature warning sign can have a striking display at night, and can sense temperature changes to prevent the temperature warning sign from being burned. The temperature warning sign for power equipment of the present application includes: a substrate, multiple temperature-sensitive film layers, a fluorescent film layer and a protective layer. The substrate has a first surface; multiple temperature-sensitive film layers are arranged at intervals on the above-mentioned first surface; the fluorescent film layer is located between adjacent temperature-sensitive film layers; and the protective layer wraps the above-mentioned substrate, the above-mentioned temperature-sensitive film layer and the above-mentioned fluorescent film layer. The present application adds a multi-level temperature warning function and a multi-color night warning effect, which improves the accuracy of the warning and the conspicuousness of the warning. It solves the problem that power equipment in the related art does not have a temperature warning function.

[0026] The color of the fluorescent film layer is green at night, but it can be any color within the visible spectrum. It not only provides a clear and visible mark at night, but also works in low-light environments, improving the safety and management efficiency of power equipment. This design of the fluorescent film layer enables the temperature warning sign to provide clear visual signals during nighttime maintenance and inspection of power facilities, greatly improving the safety of nighttime work. Especially in completely dark environments such as underground cable rooms, the green fluorescent mark is particularly eye-catching in the dark, helping maintenance personnel to quickly locate equipment, improving inspection efficiency and reducing operational risks.

[0027] The temperature warning thresholds set by the above-mentioned temperature-sensitive film layer include but are not limited to 60°C, 70°C and 80°C. The temperature warning threshold can be set to any temperature value between 55°C and 85°C. It can perform personalized warning settings for the operating temperatures of different power equipment, thereby improving the pertinence and effectiveness of the warning.

[0028] The temperature-sensitive film layer and the fluorescent film layer are precisely cut by laser cutting technology to ensure the accuracy and aesthetics of the temperature warning sign, thereby improving the production efficiency and quality of the temperature warning sign.

[0029] The material of the above substrate can be mirror aluminum alloy. Material characteristics: high-purity aluminum alloy material is selected, and after precise single-sided polishing, a smooth mirror-like surface is formed. This aluminum alloy not only has high strength, but also has good thermal conductivity, and can quickly and evenly transmit the temperature change on the surface of the transformer. Function: The mirror structure not only improves the visual effect of the thermochromic layer and the fluorescent composite layer, making the color change clearer and more eye-catching, but also enhances the fluorescent composite layer's ability to absorb sunlight, thereby storing energy more effectively during the day, extending the fluorescent display time at night, and improving the warning effect.

[0030] The raw material ratio of the above-mentioned temperature-sensitive film layer: accurately weigh epoxy resin, selected solvent (such as a mixture of one or more of dibutyl phthalate, ethyl acetate, etc.), temperature-sensitive color powder, plasticizer, dispersant, and pre-treated antioxidant and thermal stabilizer, and mix them in a predetermined proportion. Preparation process: Place the above-mentioned raw materials in a special mixer and stir them thoroughly for 20 minutes at a constant temperature of 40°C to 60°C to ensure that the components are evenly mixed to form a stable temperature-sensitive composite coating. Printing process: Using high-precision screen printing technology, the temperature-sensitive composite coating is evenly printed on the designated area of ​​the mirror aluminum alloy to form a temperature-sensitive composite film with a specific shape, color and temperature response range. According to design requirements, it can be printed multiple times to construct complex patterns or achieve multi-level temperature warnings.

[0031] Raw material selection of the above fluorescent film layer: Selected long-lasting inorganic fluorescent materials, combined with antioxidants, heat stabilizers, anti-ultraviolet additives, epoxy resins and their solvents, to ensure the durability and stability of the fluorescent effect. Preparation and printing: After the raw materials are mixed and stirred in proportion, the screen printing technology is also used to cover the fluorescent composite film around the thermochromic composite film on the mirror aluminum alloy. The color, shape and position of the fluorescent film can be flexibly adjusted according to design requirements to enhance the warning effect at night or in low light environments.

[0032] The protective layer is made of antioxidants, heat stabilizers, anti-ultraviolet additives, epoxy resins and their solvents mixed in proportion to form a transparent and tough protective film. Through cast coating technology, the insulating transparent coating is evenly covered on the entire surface of the temperature warning sign to form a smooth and uniform coating layer. This coating not only improves the insulation performance of the sign, simulates the risks of short circuits and electric shocks during installation and use, but also enhances its weather resistance and UV resistance, extending its service life.

[0033] In some optional embodiments, such as Figure 1 As shown, the temperature warning sign further includes a through hole 15 penetrating the fluorescent film layer 13 and the substrate 11 .

[0034] In the above optional embodiment, the diameter of the through hole can be 5mm~10mm, the number is at least 4, and the edge is provided with anti-slip grooves to ensure the stable installation of the temperature warning sign on the power equipment, avoid falling off due to vibration or external force, and improve the reliability of the temperature warning sign.

[0035] In some optional embodiments, such as Figure 1 As shown, the temperature warning sign further includes: a heat dissipation structure 16 , and the heat dissipation structure 16 penetrates the fluorescent film layer 13 and the substrate 11 .

[0036] The above-mentioned through hole and the above-mentioned heat dissipation structure: According to the installation requirements and appearance design of the sign, advanced laser engraving or precision computer digital control processing technology (CNC, Computer Numerical Control) is used to accurately process the through hole and the heat dissipation structure on the temperature warning sign. The through hole is used for the fixed installation of the temperature warning sign, and the heat dissipation structure can effectively promote the air circulation around the transformer equipped with the temperature warning sign and reduce the local temperature.

[0037] In the above optional embodiment, the heat dissipation structure can be a filling material or heat dissipation hole for heat conduction, the size can be 3mm to 6mm, and the distribution density is at least 1 per square centimeter, which effectively helps the power equipment to dissipate heat, reduce the risk of equipment overheating, extend the service life of the equipment, and at the same time reduce the energy consumption of the power equipment and improve energy efficiency.

[0038] In some optional embodiments, the substrate comprises a mirror substrate.

[0039] In the above optional implementation, the mirror substrate can be a mirror aluminum alloy substrate, the size of the mirror aluminum alloy substrate can be 200mm×150mm, and the thickness is 1mm. The size and thickness can be adjusted according to the actual application environment to meet the installation requirements of different power equipment, ensuring the applicability and flexibility of the temperature warning sign. This design can also make the temperature warning sign both beautiful and practical, suitable for power equipment of different sizes and types, such as transformers, switch cabinets, etc., to ensure that there is no blind spot in the temperature monitoring of the equipment.

[0040] In some optional embodiments, the material forming the temperature-sensitive film layer includes a temperature-sensitive color-changing material and a fluorescent material, and the weight ratio of the temperature-sensitive color-changing material to the fluorescent material is (1:2) to (2:1).

[0041] In the above optional implementation manner, the ratio of thermochromic color powder to fluorescent powder is (1:2) to (2:1), which is prepared by high-precision screen printing technology and cast coating technology and applied to a mirror aluminum alloy substrate, ensuring that when the temperature of the power equipment reaches the warning threshold, the temperature warning sign can change color quickly and accurately, and promptly remind maintenance personnel to pay attention to the equipment status.

[0042] This precise matching technology enables the temperature warning sign to quickly change from colorless to a bright warning color, such as red or orange, when the temperature reaches the warning threshold, intuitively reminding maintenance personnel that the equipment may be overheated. The implementation effect is remarkable, not only reducing the failure rate of power equipment due to overheating, but also in practical applications, such as during high temperatures in summer or high-load operation of equipment, effectively preventing accidents caused by equipment overheating and ensuring the stable operation of the power system.

[0043] In some optional embodiments, the diameter of the through hole structure is 5 mm to 10 mm, and the number of the through hole structure is at least 4.

[0044] In the above optional implementation, the diameter of the through-hole structure is 5 mm to 10 mm, the number is at least 4, and the edge is provided with anti-slip grooves to ensure the stable installation of the temperature warning sign on the power equipment, avoid falling off due to vibration or external force, and improve the reliability of the temperature warning sign. This stable installation method is suitable for power facilities in earthquake-prone areas or high-vibration environments, such as substations in earthquake zones, power equipment in mines, etc., to ensure the stable performance of the temperature warning sign under harsh conditions.

[0045] In some optional embodiments, the size of the heat dissipation structure is 3 mm to 6 mm, and the distribution density is at least 1 per square centimeter.

[0046] In the above optional implementation, the size of the heat dissipation structure is 3mm to 6mm, and the distribution density is at least 1 per square centimeter, which effectively helps the power equipment to dissipate heat, reduce the risk of equipment overheating, and extend the service life of the equipment, while reducing the energy consumption of the power equipment and improving energy efficiency. This heat dissipation design is suitable for high-power, high-load power equipment, such as servers and large motors in data centers, to ensure the temperature control of the equipment under long-term high-load operation and improve the stability and energy efficiency of the equipment.

[0047] In some optional implementations, the temperature warning sign further includes a query mark, and the query mark includes an electronic tag, and the electronic tag is located on the protective layer.

[0048] In the above optional implementation, the electronic tag can be a QR code integrated on the temperature warning sign, located at the bottom edge of the protective layer of the temperature warning sign, and made of UV-resistant material, which is convenient for information query and maintenance, and improves the management efficiency and safety of power equipment. The electronic tag can also be a radio frequency identification tag (RFID) integrated on the temperature warning sign. The RFID tag is embedded in the protective layer and arranged in parallel with the mirror aluminum alloy substrate (substrate), so as to realize remote identification and management, reduce the workload of on-site maintenance, and improve the intelligent management level of power equipment.

[0049] By integrating temperature-sensitive color change, fluorescent display, anti-slip installation, heat dissipation design, insulation protection and intelligent identification technology, it can not only monitor the temperature status of power equipment in real time and issue early warnings in time, but also realize the rapid query and remote management of equipment information through the integration of QR code and RFID tags, greatly improving the safety, reliability and management efficiency of power equipment. In addition, the flexible design and material selection of temperature warning signs enable them to adapt to various harsh environments, ensure long-term stable operation, and provide strong support for the maintenance and management of power equipment.

[0050] In some optional embodiments, the material of the protective layer includes acrylic and / or polyurethane materials.

[0051] In the above optional implementation, the protective layer is made of acrylic or polyurethane material, which not only protects the temperature warning sign from external environmental influences such as corrosion and wear, but also maintains the clarity and aesthetics of the temperature warning sign, extending the service life of the temperature warning sign. This material selection allows the temperature warning sign to maintain a good state in corrosive environments such as the ocean and chemical plants, and is suitable for offshore wind power facilities, power equipment in chemical plants, etc., ensuring the long-term stability and aesthetics of the temperature warning sign.

[0052] In some optional embodiments, the thickness of the protective layer is 0.1 mm to 0.3 mm.

[0053] In the above optional implementation, the thickness of the protective layer is 0.1 mm to 0.3 mm, which not only protects the temperature warning sign from external environmental influences such as corrosion, wear, etc., but also maintains the clarity and aesthetics of the temperature warning sign, thereby extending the service life of the temperature warning sign.

[0054] The temperature warning sign for power equipment in this application includes a mirror aluminum alloy substrate, a temperature-sensitive film layer, a fluorescent film layer, a through hole, a heat dissipation structure, and a protective layer. The ratio of the temperature-sensitive color powder to the fluorescent powder is 1:2 to 2:1, ensuring that the temperature warning sign can accurately display the color change when the temperature changes, effectively improving the temperature monitoring accuracy of the power equipment, and is suitable for temperature warning of high-risk power facilities such as high-voltage substations, power cables, and generators to ensure the safe operation of the equipment.

[0055] like Figure 2 As shown, first, a substrate 11 is provided, a preliminary temperature-sensitive film layer is formed on a first surface of the substrate 11, and the preliminary temperature-sensitive film layer is etched to obtain a plurality of temperature-sensitive film layers 12, fluorescent film layers 13 are filled between adjacent temperature-sensitive film layers 12, through holes 15 and heat dissipation structures 16 are formed in different fluorescent film layers 13, and finally a protective layer 14 is wrapped on the surface of the above structure, the protective layer 14 will not enter the through holes 15 and the heat dissipation structure 16, so as to avoid blocking the through holes 15 and the heat dissipation structure 16.

[0056] The temperature warning sign for electric power equipment provided by the present application will be specifically described below in conjunction with an embodiment.

[0057] Example 1

[0058] 1) Material preparation:

[0059] Substrate: Use single-sided polished high-strength aluminum alloy plate with a thickness of 1mm and a size of 200mm×150mm.

[0060] Raw materials for the temperature-sensitive film layer: epoxy resin: 30 parts by weight; solvent (dibutyl phthalate): 50 parts by weight; temperature-sensitive color-changing powder (red to black transition, response temperature 80°C): 15 parts by weight; plasticizer: 5 parts by weight; dispersant: 2 parts by weight; pretreated antioxidant: 3 parts by weight; pretreated heat stabilizer: 5 parts by weight.

[0061] Fluorescent composite film raw materials: long afterglow inorganic fluorescent material (green): 17 parts by weight; antioxidant: 1 part by weight; thermal stabilizer: 1 part by weight; anti-ultraviolet additive: 1 part by weight; epoxy resin: 30 parts by weight; solvent (ethyl acetate): 50 parts by weight.

[0062] Protective layer raw materials: antioxidant: 2 parts by weight; heat stabilizer: 2 parts by weight; anti-ultraviolet additive: 1 part by weight; epoxy resin: 35 parts by weight; solvent (acetone): 60 parts by weight.

[0063] 2) Production steps:

[0064] Preparation of temperature-sensitive film layer: All raw materials of the temperature-sensitive film layer are mixed in proportion and stirred at 50°C for 20 minutes to obtain a uniform coating. The temperature-sensitive film layer of a specific shape (such as a circle or rectangle) and color is printed on the surface of the substrate using screen printing technology.

[0065] Preparation and printing of fluorescent film layer: The fluorescent film layer coating is prepared by the same method, and a green fluorescent film layer is printed around the temperature-sensitive film layer to form a warning area visible at night.

[0066] Through-hole and heat dissipation structure processing: According to the installation requirements, two through-holes with a diameter of 5 mm are processed on the edges of both sides of the sign as installation holes, and a heat dissipation structure (heat dissipation hole) with a diameter of 10 mm is processed in the center of the bottom of the sign.

[0067] Protective layer coating: Mix the raw materials of the protective layer evenly, cover the entire surface of the sign through cast coating technology, and wait for it to dry naturally or in a oven.

[0068] The signboard of this embodiment has a basic temperature warning function. When the surface temperature of the transformer reaches 80°C, the temperature-sensitive film layer changes from red to black, sending out a warning signal. At the same time, the fluorescent film layer emits green fluorescence at night or in low light conditions, providing a clear visual warning.

[0069] Example 2

[0070] 1) Material preparation:

[0071] On the basis of Example 1, the following materials are added:

[0072] Multi-color temperature-sensitive color powder: used to achieve multi-level temperature warning (such as yellow to orange to red, corresponding to 60℃, 70℃, and 80℃ respectively).

[0073] Different colors of fluorescent materials: such as blue and yellow, are used to increase the diversity and visibility of night warnings.

[0074] 2) Production steps:

[0075] Preparation of temperature-sensitive film layer: Multi-color temperature-sensitive color powder is used, and different color areas corresponding to different temperature thresholds are formed on the substrate through multiple screen printing technologies.

[0076] Fluorescent film printing: Using the same method, blue and yellow fluorescent materials are used to print a multi-color fluorescent composite film around the signboard to create a richer night warning effect.

[0077] Additional function integration: RFID tags are integrated on the identification plate to store basic information of the transformer, maintenance records, etc., to facilitate inspection and management.

[0078] The signboard of this embodiment adds a multi-level temperature warning function and a multi-color night warning effect on the basis of the basic type, which improves the accuracy of the warning and the eye-catchingness of the warning. At the same time, by integrating a QR code or RFID tag, digital management and rapid query of information are realized, which improves the intelligent level of the power system.

[0079] The temperature warning sign of the present application includes a mirror aluminum alloy substrate, a temperature-sensitive film layer, a fluorescent film layer, a through-hole structure, a heat dissipation hole, and a protective layer. The ratio of the temperature-sensitive color powder to the fluorescent powder is 1:2 to 2:1, ensuring that the temperature warning sign can accurately display the color change when the temperature changes. The color of the fluorescent film layer is green at night, but it can be any color within the visible spectrum to meet the needs of different environments. The size of the mirror aluminum alloy substrate is 200mm×150mm, and the thickness is 1mm, which can be adjusted according to the actual application environment. The temperature warning threshold set by the temperature-sensitive film layer includes but is not limited to 60℃, 70℃ and 80℃, and the temperature warning threshold can be set to any temperature value between 55℃ and 85℃ to meet the temperature monitoring requirements of different power equipment. The diameter of the through-hole structure is 5mm to 10mm, the number is at least 4, and the edge is provided with anti-slip grooves to ensure the stable installation of the temperature warning sign. The size of the heat dissipation hole is 3mm to 6mm, and the distribution density is at least 1 per square centimeter, which effectively helps the power equipment to dissipate heat and extend the service life of the equipment. The protective layer is made of acrylic or polyurethane material with a thickness of 0.1mm to 0.3mm, which protects the temperature warning sign from the external environment. The temperature-sensitive film layer and the fluorescent film layer are precisely cut by laser cutting technology to ensure the accuracy and aesthetics of the temperature warning sign. The temperature warning sign also includes an integrated QR code, located at the bottom edge of the temperature warning sign, made of UV-resistant material, which is convenient for information query and maintenance. The temperature warning sign also includes an integrated RFID tag, embedded in the protective layer and set parallel to the mirrored aluminum alloy substrate to achieve remote identification and management.

[0080] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0081] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A temperature warning sign for electric power equipment, characterized in that: include: A substrate having a first surface; A plurality of temperature-sensitive film layers are arranged on the first surface at intervals; A fluorescent film layer, located between adjacent temperature-sensitive film layers; A protective layer wraps the substrate, the temperature-sensitive film layer and the fluorescent film layer.

2. The temperature warning sign according to claim 1, characterized in that: The temperature warning sign also includes a through hole that penetrates the fluorescent film layer and the substrate.

3. The temperature warning sign according to claim 1, characterized in that: The temperature warning sign also includes a heat dissipation structure, and the heat dissipation structure runs through the fluorescent film layer and the substrate.

4. The temperature warning sign according to claim 1, characterized in that: The substrate includes a mirror substrate.

5. The temperature warning sign according to claim 1, characterized in that: The material forming the temperature-sensitive film layer includes a temperature-sensitive color-changing material and a fluorescent material, and the weight ratio of the temperature-sensitive color-changing material to the fluorescent material is (1:2) to (2:1).

6. The temperature warning sign according to claim 2, characterized in that: The diameter of the through holes is 5 mm to 10 mm, and the number of the through holes is at least 4.

7. The temperature warning sign according to claim 3, characterized in that: The size of the heat dissipation structure is 3 mm to 6 mm, and the distribution density is at least 1 per square centimeter.

8. The temperature warning sign according to claim 1, characterized in that: The temperature warning sign also includes a query mark, and the query mark includes an electronic tag, and the electronic tag is located on the protective layer.

9. The temperature warning sign according to claim 3, characterized in that: The material of the protection layer includes acrylic and / or polyurethane materials.

10. The temperature warning sign according to claim 3, characterized in that: The thickness of the protective layer is 0.1 mm to 0.3 mm.

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