Automobile rear windshield

Abstract

The utility model discloses an automobile rear windshield, which belongs to the technical field of automobile windshields, and comprises a glass body, a sealing frame is arranged outside the glass body, the glass body comprises inner layer glass and outer layer glass, an electrochromic film and a control circuit are arranged between the inner layer glass and the outer layer glass, and the control circuit is electrically connected with a vehicle-mounted electric control system. The surface of the inner glass layer and the surface of the outer glass layer are each coated with a nano-coating which is resistant to water drop sagging, resistant to fog and easy to clean and has a special function, and a plurality of heating wire sets are arranged on the electrochromic film. According to the automobile rear windshield, the light transmittance of the rear windshield can be adjusted according to the light intensity through the electrochromic film, the influence of strong light on the sight line of a driver can be avoided, and the nano coating can replace an automobile film, so that the problems of blistering and the like occurring when the automobile film is pasted are solved; therefore, the problem that the heating lines of the rear windshield are damaged due to the fact that the automobile changing film is torn off is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile windshields, in particular to an automobile rear windshield. Background Art

[0002] Current car rear windshields rely on heating wires for defogger. When the rear windshield is defogged, the heating wires heat up. However, because the rear windshield contains heating wires, applying film to existing rear windshields is generally not recommended. If the rear windshield film breaks and needs to be replaced, removing the film can easily damage the heating wires, affecting the defrosting and defogging function. Furthermore, when driving at night, if the vehicle behind you uses high beams, the rear windshield and rearview mirrors will be affected by the light, hindering the driver's ability to see behind, posing a significant safety hazard. In rainy weather, countless water droplets of varying sizes easily form on the rear windshield surface, blurring vision and affecting clarity and safety. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a rear windshield for an automobile.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0005] The utility model discloses a rear windshield for an automobile, comprising a glass body, a sealing frame being provided on the outside of the glass body, the glass body comprising an inner layer of glass and an outer layer of glass, an electrochromic film and a control circuit being provided between the inner layer of glass and the outer layer of glass, the control circuit being electrically connected to an on-board electronic control system, the surfaces of the inner layer of glass and the outer layer of glass being coated with a special nano-molecular coating having waterproof, anti-fog and easy-to-clean effects, and a plurality of heating wire groups being provided on the electrochromic film.

[0006] As a preferred technical solution of the present invention, silver paste busbars are symmetrically provided on both sides of the electrochromic film, the heating wire group is arranged between the two silver paste busbars, and each of the silver paste busbars is provided with a welding area. The width of each of the silver paste busbars gradually decreases from close to the welding area to away from the welding area. The welding area of ​​the silver paste busbar is electrically connected to one end of the connecting wire, and the other end of the connecting wire is electrically connected to the control circuit.

[0007] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0008] The utility model relates to a rear windshield for automobiles. The electrochromic film can adjust the light transmittance of the rear windshield according to the intensity of light, thereby preventing strong light from affecting the driver's vision. The nano-coating can replace the automobile film, thereby avoiding problems such as bubbling caused by the film being applied, and further avoiding the problem of damage to the heating lines of the rear windshield caused by film tearing when changing the car film. The width of each silver paste busbar gradually decreases from the direction close to the welding area to the direction away from the welding area, which can effectively ensure that the temperature of each part of the silver paste busbar is uniform and the temperature is not too high or too low. In addition, the width of the area on the silver paste busbar with low current and low heat generation is reduced, which can further reduce the amount of silver paste used in the silver paste busbar and reduce the cost of the automobile rear windshield. At the same time, the nano-coating with a special molecular structure on the surface of the rear windshield can achieve anti-fog and water dripping on the glass surface, and is easy to clean, always maintaining the clarity of the glass, and solving the problem of field of vision safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0010] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0011] Figure 2 yes Figure 1 AA sectional view;

[0012] In the figure: glass body 1, sealing frame 2, electrochromic film 3, heating wire group 4, silver paste busbar 5, welding area 6. DETAILED DESCRIPTION

[0013] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0014] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance; in addition, unless otherwise expressly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0015] Figure 1-2 The utility model provides a rear windshield for an automobile, comprising a glass body 1, a sealing frame 2 being provided on the outside of the glass body 1, the glass body 1 comprising an inner layer of glass and an outer layer of glass, an electrochromic film 3 and a control circuit being provided between the inner layer of glass and the outer layer of glass, the control circuit being electrically connected to an on-board electronic control system, the surfaces of the inner layer of glass and the outer layer of glass being coated with a special nanomolecular coating having waterproof, anti-fog and easy-to-clean effects, and a plurality of heating wire groups 4 being provided on the electrochromic film 3.

[0016] In this embodiment, the electrochromic film 3 can adjust the transmittance of the rear windshield according to the intensity of light, thereby avoiding the influence of strong light on the driver's vision. The nano-coating can replace the car film, thereby avoiding problems such as bubbling when applying the car film, and further avoiding the problem of damage to the heating lines of the rear windshield caused by tearing off the film when changing the car film.

[0017] The nano coating is a nano coating with a photochromic effect.

[0018] When light hits the glass, it creates a photochromic effect.

[0019] Specifically, silver paste busbars 5 are symmetrically provided on both sides of the electrochromic film 3, the heating wire group 4 is arranged between the two silver paste busbars 5, and each silver paste busbar 5 is provided with a welding area 6. The width of each silver paste busbar 5 gradually decreases from approaching the welding area 6 to away from the welding area 6. The welding area 6 of the silver paste busbar 5 is electrically connected to one end of the connecting wire, and the other end of the connecting wire is electrically connected to the control circuit.

[0020] The width of each silver paste busbar 5 gradually decreases from approaching the welding area 6 to away from the welding area 6, which can effectively ensure that the temperature of each part of the silver paste busbar 5 is uniform, and the temperature will not be too high or too low. In addition, the width of the area with lower current and less heat generation on the silver paste busbar 5 is reduced, which can further reduce the amount of silver paste used in the silver paste busbar 5 and reduce the cost of the car's rear windshield.

[0021] The electrochromic film described in the present invention refers to the phenomenon that the optical properties (reflectivity, transmittance, absorptivity, etc.) of the material undergo stable and reversible color changes under the action of an external electric field, which is manifested in appearance as reversible changes in color and transparency.

[0022] The nanomaterial coating described in this utility model exhibits a wide range of optical properties. Its optical transmission spectrum extends from the ultraviolet band to the far infrared band. By varying the composition and properties of the nanocoating, photochromic, thermochromic, and electrochromic effects can be achieved. Furthermore, the nanocoating applied to the rear windshield can prevent fogging and water dripping from the glass surface, making it easy to clean and maintaining glass clarity, thus addressing the issue of visual safety.

[0023] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A rear windshield of an automobile, comprising a glass body (1), a sealing frame (2) being provided on the outside of the glass body (1), characterized in that: The glass body (1) comprises an inner layer of glass and an outer layer of glass; an electrochromic film (3) and a control circuit are provided between the inner layer of glass and the outer layer of glass; the control circuit is electrically connected to an on-board electronic control system; the surfaces of the inner layer of glass and the outer layer of glass are both coated with a nano coating; and a plurality of heating wire groups (4) are provided on the electrochromic film (3).

2. The automobile rear windshield according to claim 1, characterized in that: Silver paste busbars (5) are symmetrically provided on both sides of the electrochromic film (3), a heating wire group (4) is arranged between the two silver paste busbars (5), and each of the silver paste busbars (5) is provided with a welding area (6), the width of each of the silver paste busbars (5) gradually decreases in a direction from close to the welding area (6) to away from the welding area (6), the welding area (6) of the silver paste busbar (5) is electrically connected to one end of a connecting wire, and the other end of the connecting wire is electrically connected to a control circuit.

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