A high-strength heat-insulating windshield for high-speed trains
By combining multi-layer heat insulation film and tempered glass structure, the problem of insufficient infrared heat blocking in high-speed rail windshields under extreme conditions is solved, achieving the effects of efficient heat insulation and enhanced glass performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO BAIYOU GLASS TECH CO LTD
- Filing Date
- 2025-08-06
- Publication Date
- 2026-06-30
AI Technical Summary
Existing high-speed rail windshields are unable to effectively block infrared heat under extreme conditions, leading to unstable temperatures inside the carriages, increased energy consumption, and reduced equipment lifespan.
It adopts a multi-layer heat insulation film structure, including a wedge-shaped heat insulation PVB film, an electrochromic membrane, and a heat insulation PVB film, combined with a tempered glass structure and protective components, to form a multi-layer heat insulation and dynamically adjustable heat insulation system.
It significantly improves the ability to block infrared thermal radiation of different bands, reduces temperature accumulation inside the vehicle, lowers energy consumption, and enhances the overall strength and impact resistance of the glass.
Smart Images

Figure CN224427404U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of glass equipment, and specifically relates to a high-strength heat-insulating windshield glass for high-speed trains. Background Technology
[0002] The windshields used in high-speed trains are high-performance composite safety glass specifically designed for high-speed trains. Currently, high-speed train windshields employ technologies such as argon-filled insulated glass and single-layer coatings to improve heat insulation performance. However, these technologies still have limitations under extreme conditions. For example, when high-speed trains travel at high speeds for extended periods in high-temperature regions, the continuous intense solar radiation can make it difficult for ordinary coatings to completely block a large amount of infrared radiation, causing some heat to enter the cabin and affecting the temperature stability inside. This is mainly because existing coating technologies have room for improvement in the reflectivity of certain infrared wavelengths, and the performance of the coating layer may degrade under prolonged, high-intensity radiation. The conventional solution is to increase the cooling capacity of the air conditioning system to balance the temperature, but this undoubtedly increases energy consumption, burdening the high-speed train's energy needs. Furthermore, prolonged high-load operation of the cooling equipment may reduce its lifespan and increase maintenance costs and frequency. Therefore, a new structure is needed to address these technical problems. Utility Model Content
[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a high-strength heat-insulating windshield for high-speed rail, and to solve the problems mentioned in the background technology.
[0004] This utility model is achieved through the following technical solution: a high-strength heat-insulating windshield for high-speed rail, comprising: an inner baffle assembly, an outer baffle assembly, and a heat insulation assembly. The inner baffle assembly, the outer baffle assembly, and the heat insulation assembly constitute a windshield assembly. The inner baffle assembly includes an inner baffle body and a diaphragm. Diaphragms are installed on both the inner and outer surfaces of the inner baffle body. The outer baffle assembly includes an outer baffle body and a protective component. A protective component is installed on the outer surface of the outer baffle body. The heat insulation assembly includes a heat insulation film one, a heat insulation film two, and a heat insulation film three for heat insulation.
[0005] In a preferred embodiment, both the inner and outer baffle bodies are made of tempered glass. The thickness of the inner baffle body is less than that of the outer baffle body. The diaphragm includes a PU film and a PET film. The outer surface of the inner baffle body is covered with a PU film, and the inner surface of the inner baffle body is covered with a PET film.
[0006] In a preferred embodiment, the diaphragm is connected to the inner baffle body via a PVB film layer. The heat insulation film one, heat insulation film two, and heat insulation film three are respectively a wedge-shaped heat insulation PVB film, an electrochromic diaphragm, and a heat insulation PVB film. A wedge-shaped heat insulation PVB film is installed on the inner surface of the inner baffle body via a PVB film layer. A PET film is disposed between the wedge-shaped heat insulation PVB film and the inner baffle body. In use, through the arrangement of the outer baffle assembly and the inner baffle assembly, the diaphragm on both sides of the inner baffle body can enhance the structural stability of the inner baffle and improve the sound insulation effect. The protective component on the outer side of the outer baffle body can effectively resist external impact and reduce wear.
[0007] In a preferred embodiment, an electrochromic membrane is mounted on the side of the wedge-shaped heat-insulating PVB film away from the PET film via a PVB film layer. A wire is provided on the outer surface of the electrochromic membrane, and the electrochromic membrane is connected to an external control device via the wire. A heat-insulating PVB film is mounted on the side of the electrochromic membrane away from the wedge-shaped heat-insulating PVB film via a PVB film layer. The synergistic effect of the multiple heat-insulating films can significantly improve the heat insulation performance, effectively block infrared heat radiation and solar heat of different wavelengths, reduce the accumulation of temperature inside the vehicle, and reduce energy consumption.
[0008] In a preferred embodiment, a PEM plate is installed on the outer surface of the outer baffle body, the specifications of which match the specifications of the outer baffle body. A reinforcing layer is installed on the inner surface of the outer baffle body through a PVB film layer, and the materials of the reinforcing layer and the outer baffle body match the materials of the inner baffle body.
[0009] In a preferred embodiment, the reinforcing layer is connected to the heat-insulating PVB film through a PVB film layer, and the inner baffle assembly, outer baffle assembly, and heat-insulating assembly constitute a fan-shaped structure for the windshield glass assembly, which has an arc-shaped curved structure.
[0010] After adopting the above technical solution, the beneficial effects of this utility model are as follows: 1. By setting an outer baffle assembly and an inner baffle assembly, the inner baffle assembly includes an inner baffle body and a diaphragm component. The inner and outer surfaces of the inner baffle body are both equipped with diaphragm components. The outer baffle assembly includes an outer baffle body and a protective component. The outer surface of the outer baffle body is equipped with a protective component. When in use, through the setting of the outer baffle assembly and the inner baffle assembly, the diaphragm components on both sides of the inner baffle body can enhance the structural stability of the inner baffle and improve the sound insulation effect. The protective component on the outer side of the outer baffle body can effectively resist external impact and reduce wear. The inner and outer components work together to strengthen the overall strength and impact resistance of the glass, and optimize the heat insulation (with heat insulation components) and sound insulation effects, providing a safer and more comfortable driving vision environment for high-speed rail travel.
[0011] 2. By setting up heat insulation components, the inner and outer windshield components and the heat insulation components constitute the windshield assembly. The heat insulation components include heat insulation film one, heat insulation film two and heat insulation film three for heat insulation. In use, the inner and outer windshield components and the heat insulation components containing heat insulation film one, heat insulation film two and heat insulation film three together constitute the windshield assembly. The synergistic effect of multiple heat insulation films can greatly improve the heat insulation performance, effectively block infrared heat radiation and solar heat of different wavelengths, reduce the accumulation of temperature in the car body and reduce energy consumption. Attached Figure Description
[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0013] Figure 1 This is a schematic diagram of the overall structure of a high-strength heat-insulating windshield for high-speed rail according to the present invention.
[0014] Figure 2 This is a schematic diagram of the side structure of a high-strength heat-insulating windshield for high-speed rail according to the present invention.
[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of a high-strength heat-insulating windshield for high-speed rail according to the present invention.
[0016] In the diagram, 100 is the outer shield body, 110 is the PAM plate, and 120 is the reinforcing layer.
[0017] 200 - Inner frame body, 210 - PU film, 220 - PET film;
[0018] 300 - Heat insulation film one, 310 - Heat insulation film two, 311 - Conductor, 320 - Heat insulation film three;
[0019] 400 - Front windshield assembly. Detailed Implementation
[0020] 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 some embodiments of the present utility model, and not all embodiments. 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.
[0021] Please see Figures 1 to 3As the first embodiment of this utility model: a high-strength heat-insulating windshield for high-speed rail, comprising: an inner baffle assembly, an outer baffle assembly, and a heat insulation assembly. The inner baffle assembly, the outer baffle assembly, and the heat insulation assembly constitute a windshield assembly 400. The inner baffle assembly includes an inner baffle body 200 and a diaphragm. The inner and outer surfaces of the inner baffle body 200 are both equipped with diaphragms. The outer baffle assembly includes an outer baffle body 100 and a protective component. The outer surface of the outer baffle body 100 is equipped with a protective component. The heat insulation assembly includes a heat insulation film 300, a heat insulation film 310, and a heat insulation film 320 for heat insulation.
[0022] Both the inner baffle body 200 and the outer baffle body 100 are made of tempered glass. The thickness of the inner baffle body 200 is less than that of the outer baffle body 100. The diaphragm includes a PU film 210 and a PET film 220. The outer surface of the inner baffle body 200 is covered with a PU film 210, and the inner surface of the inner baffle body 200 is covered with a PET film 220.
[0023] The diaphragm is connected to the inner barrier body 200 through a PVB film layer. Heat insulation film 1 300, heat insulation film 2 310 and heat insulation film 320 are respectively a wedge-shaped heat insulation PVB film, an electrochromic diaphragm and a heat insulation PVB film. A wedge-shaped heat insulation PVB film is installed on the inner surface of the inner barrier body 200 through a PVB film layer. A PET film 220 is provided between the wedge-shaped heat insulation PVB film and the inner barrier body 200.
[0024] An electrochromic diaphragm is mounted on the side of the wedge-shaped heat-insulating PVB film away from the PET film 220 through a PVB film layer. A wire 311 is provided on the outer surface of the electrochromic diaphragm. The electrochromic diaphragm is connected to an external control device through the wire 311. A heat-insulating PVB film is mounted on the side of the electrochromic diaphragm away from the wedge-shaped heat-insulating PVB film through a PVB film layer.
[0025] When the windshield assembly is in use, the internal heat insulation components block the heat radiating onto its surface. These components consist of heat insulation film 300 (wedge-shaped heat-insulating PVB film), heat insulation film 310 (electrochromic diaphragm), and heat insulation film 320 (heat-insulating PVB film). The wedge-shaped PVB film, through its contained nano-heat-insulating particles and wedge structure, continuously blocks heat and ensures no ghosting of the light source signal. The electrochromic diaphragm (this structure is existing technology; its specific structure and model can be selected according to actual needs, and will not be discussed here)... (To be elaborated) The light transmittance and heat insulation performance can be dynamically switched by adjusting the electric field according to changes in light intensity or temperature. The heat-insulating PVB film further enhances the overall heat insulation effect with the help of internal heat-insulating particles. The three work together to form a progressive process of "basic heat insulation + dynamic adjustment + enhanced barrier". Since the windshield assembly is composed of the inner and outer windshield components and the heat insulation components including heat insulation film 300, heat insulation film 310 and heat insulation film 320, the synergistic effect of the multi-layer heat insulation film can greatly improve the heat insulation performance. It can effectively block infrared heat radiation and solar heat of different wavelengths, reduce the temperature accumulation in the car body and reduce energy consumption.
[0026] Please see Figures 1 to 3 As a second embodiment of the present invention: based on the description in the above embodiments, further, a PAM plate 110 is installed on the outer surface of the outer baffle body 100, the specifications of the PAM plate 110 are matched with the specifications of the outer baffle body 100, and a reinforcing layer 120 is installed on the inner surface of the outer baffle body 100 through a PVB film layer, the materials of the reinforcing layer 120 and the outer baffle body 100 are matched with the materials of the inner baffle body 200.
[0027] The reinforcing layer 120 is connected to the heat-insulating PVB film through the PVB film layer. The inner baffle assembly, the outer baffle assembly, and the heat-insulating assembly constitute the front windshield glass assembly 400 in a fan-shaped structure and the front windshield glass assembly 400 in an arc-shaped curved structure.
[0028] During use, a heat insulation component is installed between the inner and outer windshield components. The inner, outer, and heat insulation components together constitute the windshield assembly 400. Users can install and use the windshield assembly 400. When the windshield assembly 400 is in use, the diaphragms on both sides of the inner windshield body enhance the structural stability and improve sound insulation (PU film 210 and PET film 220 improve low-temperature impact resistance, and PET film 220 also has a certain sound insulation effect). The outer protective component of the outer windshield body 100 (both the inner and outer windshield bodies are made of the same material)... Made of chemically tempered glass, it boasts high strength and impact resistance, directly withstanding external impacts such as high-speed flying stones and bird strikes. It also resists wind and sand abrasion and UV aging. Meanwhile, the outer windshield body 100 has a PAM plate 110 (protective component) installed on the outer side of the outer glass of the carriage. The PAM plate 110 has a strength close to that of steel but is lightweight. It is an impact-resistant, high-strength, transparent material that can effectively prevent the windshield from cracking due to flying stones or bird strikes. It can effectively resist external impacts and reduce wear. The internal and external components work together to enhance the overall strength and impact resistance of the glass, while also optimizing the heat insulation (with heat insulation components) and sound insulation effects, providing a safer and more comfortable driving vision environment for high-speed trains.
[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A high-strength, thermally insulated front windshield for high-speed trains, comprising: An inner bezel assembly, an outer bezel assembly, and a heat insulation assembly, characterized in that the inner bezel assembly, the outer bezel assembly, and the heat insulation assembly constitute a windshield glass assembly (400), the inner bezel assembly includes an inner bezel body (200) and a diaphragm, the inner surface and the outer surface of the inner bezel body (200) are both fitted with diaphragms, the outer bezel assembly includes an outer bezel body (100) and a protective element (110), the outer surface of the outer bezel body (100) is fitted with a protective element, and the heat insulation assembly includes a heat insulation film one (300), a heat insulation film two (310), and a heat insulation film three (320) for heat insulation.
2. The high-strength, heat-insulating front windshield for high-speed trains according to claim 1, characterized in that: Both the inner baffle body (200) and the outer baffle body (100) are made of tempered glass. The thickness of the inner baffle body (200) is less than that of the outer baffle body (100). The diaphragm includes a PU film (210) and a PET film (220). The outer surface of the inner baffle body (200) is covered with a PU film (210), and the inner surface of the inner baffle body (200) is covered with a PET film (220).
3. The high-strength, heat-insulating front windshield for high-speed trains according to claim 2, characterized in that: The diaphragm is connected to the inner baffle body (200) through a PVB film layer. The heat insulation film one (300), heat insulation film two (310) and heat insulation film three (320) are respectively a wedge-shaped heat insulation PVB film, an electrochromic diaphragm and a heat insulation PVB film. The inner surface of the inner baffle body (200) is fitted with a wedge-shaped heat insulation PVB film through a PVB film layer. A PET film (220) is disposed between the wedge-shaped heat insulation PVB film and the inner baffle body (200).
4. The high-strength heat-insulating windshield for high-speed rail as described in claim 3, characterized in that: An electrochromic diaphragm is mounted on the side of the wedge-shaped heat-insulating PVB film away from the PET film (220) through a PVB film layer. A wire (311) is provided on the outer surface of the electrochromic diaphragm. The electrochromic diaphragm is connected to an external control device through the wire (311). A heat-insulating PVB film is mounted on the side of the electrochromic diaphragm away from the wedge-shaped heat-insulating PVB film through a PVB film layer.
5. A high-strength heat-insulating windshield for high-speed rail as described in claim 4, characterized in that: The outer surface of the outer baffle body (100) is fitted with a PAM plate (110), the specifications of which match the specifications of the outer baffle body (100). The inner surface of the outer baffle body (100) is fitted with a reinforcing layer (120) through a PVB film layer, the materials of which, as well as those of the reinforcing layer (120) and the outer baffle body (100), match the materials of the inner baffle body (200).
6. A high-strength heat-insulating windshield for high-speed rail as described in claim 5, characterized in that: The reinforcing layer (120) is connected to the heat-insulating PVB film through the PVB film layer. The inner baffle assembly, the outer baffle assembly, and the heat-insulating assembly constitute the front windshield glass assembly (400) in a fan-shaped structure. The front windshield glass assembly (400) has an arc-shaped curved structure.