Heating defogging device for vehicle glass

Abstract

The utility model discloses a kind of heating defogging devices for vehicle glass, install on the glass of vehicle, its characterized by: including support and electric heating film;The front of the support has recess, the bottom wall and side wall of the recess are protruded to the back of support, the front of support is attached on glass, the recess is cooperated with glass and forms hollow conducting area;The electric heating film is profiled structure, attached on the back of support, simultaneously covers on the bottom wall, side wall of recess and the area of support corresponding recess periphery on it. The utility model can significantly increase the defogging effect of glass, while having the characteristics of safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of heating, and more particularly to a heating and defogging device for vehicle glass used in transportation vehicles. Background Technology

[0002] To enhance the safety of intelligent driving during vehicle use, multiple sensors are installed, such as infrared sensors or cameras on the inside of the windshield of a car, to detect the environment in front of the vehicle and control the vehicle's safe operation based on the detected data. In actual use, due to low temperatures, snow, or significant differences in humidity between the inside and outside of the vehicle, water vapor often forms on the glass in the area where the sensor's light waves are transmitted, affecting the sensor's light transmittance. Therefore, defogging operations are necessary in this area.

[0003] In existing technology, a sensor is mounted on the inside of a vehicle's windshield via a bracket, forming a hollow conductive zone between the bracket and the glass for the transmission of sensor light waves. A heating element is mounted on the bracket to heat the glass corresponding to the hollow conductive zone, thus defogging, as illustrated in patent documents CN222602599U and CN104160779B. However, this existing technology has drawbacks in practical use. Due to the structure of the bracket itself, it is difficult to properly position the heating element, resulting in the element being positioned on only one plane of the bracket, allowing only one side to radiate heat to the area of ​​the glass corresponding to the hollow conductive zone. For example, in the scheme with announcement number CN104160779B, only the electrically heated surface 7 on the diffuser heats the glass in the hollow conduction zone. In the scheme with announcement number CN222602599U, only the first region 102 of the electrically heated film 10 on the back of the bracket 50 heats the glass in the hollow conduction zone, resulting in poor defogging effect on the glass in the hollow conduction zone. Secondly, in the scheme with announcement number CN222602599U, the second region 101 of the electrically heated film 10 is directly attached to the part of the glass corresponding to the outside of the hollow conduction zone, directly heating the glass. The temperature is difficult to control and easily damages the glass. Utility Model Content

[0004] In view of the shortcomings of the prior art, this utility model provides a heating and defogging device for vehicle glass, which can significantly increase the defogging effect of the glass, while also being safe and reliable.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A heated defrosting device for vehicle glass, installed on the glass of a vehicle, characterized in that it includes a bracket and an electrically heated film. The front of the bracket has a groove, the bottom wall and side wall of the groove protrude from the back of the bracket, the front of the bracket is attached to the glass, and the groove and the glass cooperate to form a hollow conductive area. The electric heating film has a contour-following structure and is attached to the back of the bracket, while also covering the bottom wall, side wall, and area of ​​the bracket corresponding to the outer perimeter of the groove.

[0006] Preferably, the electric heating film has a first region, a second region, and a third region that are interconnected. The first region is attached to the area surrounding the corresponding groove of the bracket, the second region is attached to the side wall of the groove, and the third region is attached to the bottom wall of the groove.

[0007] Preferably, a first gap is provided between the first region and the second region to form a first easily foldable connection area between the first region and the second region.

[0008] Preferably, a second gap is provided between the second region and the third region to form a second easily foldable connection area between the second region and the third region.

[0009] Preferably, the sidewalls of the groove are divided into a first sidewall, a second sidewall, and a third sidewall, with the first sidewall and the third sidewall located on both sides of the second sidewall, forming a trumpet-shaped structure.

[0010] Preferably, the angle between the first sidewall, the second sidewall, and the third sidewall and the front of the bracket is between 60° and 75°.

[0011] Preferably, an opening is provided on the second sidewall for the sensor light waves to pass through.

[0012] Preferably, through holes are provided on the sidewalls and bottom wall of the groove.

[0013] The advantages of this utility model are: 1. The electric heating film is designed to conform to the structure on the back of the bracket, so that it can be attached to the bottom wall, side wall and the area around the corresponding groove of the bracket at the same time. Compared with the traditional heating film which is only on the bottom wall of the groove, it can significantly increase the heat radiation area of ​​the glass and improve the defogging effect. 2. The entire electric heating film is set on the back of the bracket. After heating the bracket, it heats the glass through heat radiation or heat conduction. Compared with traditional heating films that directly contact the glass, it has higher safety and avoids the problem of glass damage. 3. The design of the first and second easy-to-fold connection areas facilitates the bending of the first, second, and third areas, allowing the electric heating film to adapt to the uneven back of the bracket and bend accordingly, effectively fitting with multiple parts of the back of the bracket, increasing the heating area, and enhancing the defogging effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the rear of the heating and defogging device for vehicle glass provided in this embodiment; Figure 2 This is a schematic diagram of the groove provided in this embodiment on the front of the bracket; Figure 3 This is a schematic diagram of the electric heating film provided in this embodiment; Figure 4 This is a side view of the heating and defogging device for vehicle glass provided in this embodiment. Detailed Implementation

[0015] Combination Figures 1 to 4 The present invention provides a further description of the heating and defogging device for vehicle windows.

[0016] A heated defrosting device for vehicle glass, installed on the windshield 3 of a vehicle, is characterized by including a bracket 1 and an electric heating film 2.

[0017] The front of the bracket 1 has a groove 12, which is recessed relative to the bracket 1, causing the bottom wall 124 and side walls of the groove 12 to protrude from the back of the bracket 1. The side walls of the groove 12 are divided into a first side wall 121, a second side wall 123, and a third side wall 122. The first side wall 121 and the third side wall 122 are formed on both sides of the second side wall 123, forming a trumpet-shaped structure with the trumpet opening facing the front end of the bracket 1. The front of the bracket 1 is glued to the glass 3, so that the groove 12 and the glass 3 cooperate to form a hollow conductive area.

[0018] An opening 1231 is provided on the second side wall 123. The back of the bracket 1 has a mounting bracket, on which a sensor 4 is installed. The sensor 4 corresponds to the opening 1231, so that the sensor 4 transmits light waves to the outside of the vehicle through the opening 1231, the hollow conduction area and the glass 3 to detect the environment in front of the vehicle.

[0019] The electric heating film 2 is designed to conform to the back of the bracket 1 and is attached to the back of the bracket 1. It also covers the bottom wall 124, side wall and the area of ​​the bracket 1 around the corresponding groove 12 to form multiple heating surfaces, thereby heating the glass 3 in the hollow conductive area and the glass 3 around the groove 12 to improve the defogging efficiency.

[0020] Specifically, in this embodiment, the electric heating film 2 structure includes a base film and heating wires etched on the base film. In actual operation, carbon fiber heating cloth or other heating film structures can also be selected according to actual usage requirements. The electric heating film 2 includes a first region 21, a second region 22, and a third region 23 that are interconnected.

[0021] The first region 21 is attached to the outer periphery of the groove 12 on the back of the bracket 1, i.e., the position 14 behind the groove 12. There are other components 11, such as a mounting bracket for installing sensors, on the back of the bracket 1 at the position behind the groove 12. Therefore, the first region 21 avoids and conforms to the position behind the groove 12 on the back of the bracket 1, forming two regions on the left and right, so that when the two first regions 21 are attached to the position, they will not interfere with the components 11 at the position.

[0022] The second region 22 is attached to the sidewall of the groove 12. Since the sidewall of the groove 12 is flat, the second region 22 is shaped to match the sidewall of the groove 12. In this embodiment, the second region 22 is attached to the first sidewall 121 and the third sidewall 122, and the electric heating film 2 is not attached to the second sidewall 123. Therefore, there are two second regions 22.

[0023] The third region 23 is attached to the bottom wall 124 of the groove 12. Similarly, other components 11 are located on the bottom wall 124 of the groove 12. Therefore, the third region 23 avoids and conforms to the bottom wall 124 of the groove 12, so that when the third region 23 is attached to the bottom wall 124 of the groove 12, it will not interfere with other components 11. In this embodiment, since the angle between the front side of the bottom wall 124 of the groove 12 and the back of the bracket 1 is relatively large, between 170° and 175°, the area of ​​the third region 23 can be increased. The front end 231 of the third region 23 is bent by 5° to 10° and extends directly to the position 13 on the back of the bracket 1 corresponding to the front of the groove 12, so as to further increase the heating area.

[0024] A first notch 24 is provided between the first region 21 and the second region 22 to form a narrower first foldable connection area 25 between them. A smaller number of heating wires are arranged in the first foldable connection area 25 to facilitate bending of the first region 21 relative to the second region 22. When the heating film 2 is attached to the back of the bracket 1, the angle formed between the back of the bracket 1 and the sidewall of the groove 12 corresponds to the first foldable connection area 25, causing the first region 21 to bend relative to the second region 22 and fit into the corresponding position on the back of the bracket 1.

[0025] A second notch 26 is provided between the second region 22 and the third region 23 to form a narrower second foldable connection area 27 between the two regions. A smaller number of heating wires are arranged in the second foldable connection area 27 to facilitate bending of the second region 22 relative to the third region 23. When the heating film 2 is attached to the back of the bracket 1, the angle formed between the sidewall and bottom wall 124 of the groove 12 corresponds to the second foldable connection area 27, causing the second region 22 to bend relative to the third region 23 and fit into the corresponding position on the back of the bracket.

[0026] The angle between the first sidewall 121, the second sidewall 123, and the third sidewall 122 and the front of the groove 12 bracket 1 is between 60° and 75°. This angle facilitates the transmission of light waves from the sensor 4 and allows each sidewall to face the glass 3 at a certain angle, so that the sidewalls can radiate heat to the glass 3 after being heated, thus improving the defogging effect.

[0027] Through holes are provided on the first sidewall 121, the third sidewall 122 and the bottom wall 124 of the groove 12 to facilitate the passage of heat and improve the heating effect on the glass 3.

[0028] In this embodiment, since the electric heating film 2 is designed to conform to the back of the bracket 1, when the electric heating film 2 is attached to the back of the bracket 1, it can simultaneously cover the bottom wall 124 and the two side walls of the groove 12, so that the groove 12 has three surfaces that can simultaneously heat the part of the glass 3 corresponding to the hollow conductive area. Secondly, the first region 21 is attached to the back of the bracket 1 corresponding to the position behind the groove 12, and the front end of the third region 23 extends to the front of the back of the bracket 1 corresponding to the position in front of the groove 12, which can provide auxiliary heating to the part of the glass 3 located around the groove 12. Therefore, the defogging effect can be significantly improved. At the same time, the electric heating film 2 does not directly contact the glass 3, which has the characteristics of safety and reliability.

[0029] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A heated defrosting device for vehicle glass, installed on the glass of a vehicle, characterized in that: Includes a support frame and an electrically heated film; The front of the bracket has a groove, the bottom wall and side wall of the groove protrude from the back of the bracket, the front of the bracket is attached to the glass, and the groove and the glass cooperate to form a hollow conductive area. The electric heating film has a contour-following structure and is attached to the back of the bracket, while also covering the bottom wall, side wall, and area of ​​the bracket corresponding to the outer perimeter of the groove.

2. The heating and defogging device for vehicle glass according to claim 1, characterized in that: The electric heating film has a first region, a second region, and a third region that are interconnected. The first region is attached to the area surrounding the corresponding groove of the bracket, the second region is attached to the side wall of the groove, and the third region is attached to the bottom wall of the groove.

3. The heating and defogging device for vehicle glass according to claim 2, characterized in that: A first gap is provided between the first region and the second region to form a first easily foldable connection area between the first region and the second region.

4. The heating and defogging device for vehicle glass according to claim 2, characterized in that: A second gap is provided between the second and third regions to form a second easily foldable connection area between the second and third regions.

5. The heating and defogging device for vehicle glass according to claim 1, characterized in that: The sidewalls of the groove are divided into a first sidewall, a second sidewall, and a third sidewall. The first sidewall and the third sidewall are located on both sides of the second sidewall, forming a trumpet-shaped structure.

6. The heating and defogging device for vehicle glass according to claim 5, characterized in that: The angles between the first, second, and third sidewalls and the front of the support are between 60° and 75°.

7. The heating and defogging device for vehicle glass according to claim 5, characterized in that: An opening is provided on the second side wall to allow sensor light waves to pass through.

8. The heating and defogging device for vehicle glass according to claim 1, characterized in that: Through holes are provided on the side walls and bottom walls of the groove.

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