A graphene-based defogging assembly and automobile rearview mirror

Abstract

The utility model discloses a kind of defogging assembly and automobile rearview mirror based on graphene, including bottom plate, bottom plate has heat conduction effect, the side surface of bottom plate is respectively spirally provided with first graphene heating wire, second graphene heating wire and third graphene heating wire independent of each other, wherein, first graphene heating wire and third graphene heating wire are respectively arranged in the upper end portion and lower end portion of side surface, second graphene heating wire is arranged in the middle of side surface, and first graphene heating wire, second graphene heating wire and third graphene heating wire are respectively electrically connected to power supply by first controller, second controller and third controller;The upper edge portion and lower edge portion of bottom plate are respectively provided with airflow defogging device and condensate collection device through the two side surfaces of bottom plate;By setting first graphene heating wire, second graphene heating wire and third graphene heating wire independent of each other, can be heated differently according to the mist distribution characteristics of different regions of mirror surface.

Description

Technical Field

[0001] This utility model relates to the field of mirror defogging technology, specifically a graphene-based defogging component and automotive rearview mirror. Background Technology

[0002] During driving, rearview mirrors are prone to fogging or water droplets due to temperature or humidity changes, severely affecting the driver's visibility and increasing driving safety hazards. Traditional defogging methods mainly rely on heating wires, but these suffer from uneven heating, high energy consumption, and slow response times. Furthermore, a single heating method is insufficient to quickly remove fog from the mirror surface, especially in high humidity environments, where the effect is even less than ideal.

[0003] Graphene, as a novel material, possesses excellent thermal and electrical conductivity, enabling rapid and uniform heating. However, existing graphene heating components mostly employ a single heating wire design, failing to address the differentiated fog distribution characteristics in different areas of the mirror surface, resulting in low defogging efficiency. Furthermore, the lack of auxiliary defogging devices further limits the improvement of defogging performance.

[0004] Therefore, there is a need for a graphene-based high-efficiency defogging component and automotive rearview mirror. This defogging component needs to be able to achieve a fast and uniform defogging effect through multi-zone independent heating and auxiliary airflow, thereby improving driving safety. Utility Model Content

[0005] The purpose of this invention is to provide a graphene-based defogging component and a car rearview mirror to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A graphene-based defogging component includes a base plate with thermal conductivity. The base plate is characterized by the following features: a first graphene heating wire, a second graphene heating wire, and a third graphene heating wire are coiled independently on one side of the base plate. The first and third graphene heating wires are respectively located at the upper and lower ends of the side, while the second graphene heating wire is located in the middle of the side. The first, second, and third graphene heating wires are electrically connected to a power supply via a first controller, a second controller, and a third controller, respectively. An airflow defogging device and a condensate collection device are respectively provided through both sides of the base plate at its upper and lower edges.

[0008] Preferably, the airflow demisting device includes a guide nozzle assembly and a heating flat square tube connected to the guide nozzle assembly. One side of the heating flat square tube is simultaneously attached to the first graphene heating wire, the second graphene heating wire, and the third graphene heating wire. A small fan is connected to the lower part of the heating flat square tube. The small fan is used to guide air through the heating flat square tube for heating and then blow it through the guide nozzle assembly to the side of the base plate away from the first graphene heating wire.

[0009] Preferably, the guide nozzle assembly includes a connecting pipe fixedly disposed through the edge of the base plate, one end of the connecting pipe near the first graphene heating wire being connected to the heating flat square pipe, and the other end of the connecting pipe forming an air outlet that bends and points towards the side of the base plate away from the first graphene heating wire; the bottom wall of the connecting pipe is provided with a guide for smoothly guiding the airflow to the air outlet.

[0010] Preferably, the inner wall of the heating flat square tube is formed with a plurality of horizontally arranged partitions spaced at a certain distance, and the plurality of partitions have openings that form an S-shaped channel inside the heating flat square tube.

[0011] Preferably, the condensate collection device is a long rectangular trough, and a collection container is connected to the middle of the long rectangular trough.

[0012] Preferably, the liquid collection container has an evaporation hole at the top.

[0013] A car rearview mirror, characterized in that: the rearview mirror includes a mirror housing, a lens, and a defogging assembly as described above, the lens being fitted and installed on the side of the base plate of the defogging assembly away from the first graphene heating wire, and the lens and the defogging assembly being integrally installed into the mirror housing.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This invention employs three independent graphene heating wires—a first, a second, and a third—located at the upper, middle, and lower ends of the base plate, respectively. This design allows for differentiated heating based on the fog distribution characteristics of different areas of the mirror surface. Specifically, the upper and lower ends, being closer to the edges, experience greater fog condensation and are rapidly heated by the first and third graphene heating wires; the middle area, with less fog, is maintained at a moderate temperature by the second graphene heating wire. Each heating wire's power is adjusted by an independent controller, further optimizing energy consumption and achieving a highly efficient and energy-saving defogging effect.

[0016] 2. The airflow defogging device of this invention uses a small fan to guide air into a heated flat square tube, where the air is heated by the heat from a graphene heating wire. The heated air is then blown onto the mirror surface through a guide nozzle assembly. This design not only accelerates the evaporation of fog but also disperses water droplets on the mirror surface, significantly improving the defogging speed. The S-shaped channel inside the heated flat square tube extends the air heating path, further increasing the temperature of the hot air and enhancing the auxiliary defogging effect. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention from a first-person perspective;

[0018] Figure 2 This is a three-dimensional structural diagram of the present invention from a second perspective;

[0019] Figure 3 This is a partial sectional view of the left side of this utility model;

[0020] Figure 4 for Figure 3 A magnified view of part A in the image;

[0021] Figure 5 This is a rear view of the present invention;

[0022] Figure 6 This is a schematic diagram of the control principle of this utility model;

[0023] Figure 7 This is a three-dimensional structural diagram of the present invention applied to a car rearview mirror.

[0024] In the diagram: 1-Base plate; 2-First graphene heating wire; 3-Second graphene heating wire; 4-Third graphene heating wire; 5-First controller; 6-Second controller; 7-Third controller; 8-Power supply; 9-Airflow demisting device; 10-Condensate collection device; 11-Guide nozzle assembly; 12-Heating flat square tube; 13-Small fan; 14-Connecting pipe; 15-Air outlet; 16-Guide component; 17-Baffle plate; 18-Opening; 19-Long square groove; 20-Liquid collection container; 21-Evaporation hole; 22-Mirror shell; 23-Lens. Detailed Implementation

[0025] 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.

[0026] like Figures 1 to 6As shown, this utility model is a graphene-based defogging component that uses graphene material as a heat source for heating and defogging, serving as a defogging device for automotive rearview mirrors; specifically, as... Figure 1 , Figure 2 , Figure 3 , Figure 5 and Figure 6 As shown, the graphene-based defogging component includes a base plate 1, which has excellent thermal conductivity. Specifically, a first graphene heating wire 2, a second graphene heating wire 3, and a third graphene heating wire 4 are coiled on one side of the base plate 1. It should be noted that the other side of the base plate 1 is used for mounting a car's rearview mirror. The first graphene heating wire 2 and the third graphene heating wire 4 are respectively located at the upper and lower ends of the side of the base plate 1, while the second graphene heating wire 3 is located in the middle of the side. Preferably, each graphene heating wire is electrically connected to a power supply 8 via an independent first controller 5, a second controller 6, and a third controller 7 to achieve precise power adjustment.

[0027] Further optimized, an airflow demisting device 9 and a condensate collection device 10 are respectively installed through the upper and lower edges of the base plate 1. More specifically, the airflow demisting device 9 includes a guide nozzle assembly 11 and a heating flat square tube 12. One side of the heating flat square tube 12 is attached to each graphene heating wire (i.e., the first graphene heating wire 2, the second graphene heating wire 3, and the third graphene heating wire 4) to fully utilize the heat of the heating wires. Furthermore, a small fan 13 is connected to the lower part of the heating flat square tube 12 to introduce air, heat it, and then blow it onto the mirror mounted on the demisting assembly (i.e., the mirror is mounted on the side of the base plate 1 away from the first graphene heating wire 2).

[0028] like Figure 3 and Figure 4 As shown, the air guide nozzle assembly 11 includes a connecting pipe 14 and an air outlet 15. The connecting pipe 14 passes through the upper edge of the base plate 1, with one end connected to the heating flat square tube 12, and the other end forming a bent air outlet 15, pointing towards the mirror surface of the base plate 1 on the demisting assembly away from the side of the first graphene heating wire 2. A guide element 16 is also provided inside the connecting pipe 14 to smoothly guide the airflow. Further optimized, the heating flat square tube 12 is provided with multiple partitions 17, such as... Figure 5 As shown, the openings 18 on the multiple partitions 17 form an S-shaped channel inside the heating flat tube 12, extending the air heating path and increasing the temperature of the hot air.

[0029] like Figure 2 , Figure 3 and Figure 5As shown, the condensate collection device 10 is a long rectangular trough 19, with a collection container 20 connected in the middle. An evaporation hole 21 is provided at the top of the collection container 20 to accelerate the evaporation of the condensate. Preferably, the bottom of the long rectangular trough 19 is inclined towards the collection container 20 to facilitate liquid flow into the collection container 20.

[0030] This utility model is mainly used as a rearview mirror for automobiles. Specifically, such as... Figure 7 As shown, the lens 23 of the rearview mirror is fitted onto the side of the base plate 1 away from the graphene heating wire. The resulting lens 23 and the defogging assembly are integrated into the mirror housing 22. The entire rearview mirror is then installed on a car for use. When fog appears in the rearview mirror, it can be manually controlled for rapid defogging. This type of car rearview mirror further optimizes defogging efficiency and is easy to use and maintain.

[0031] Working principle:

[0032] In use, the power of each graphene heating wire (first graphene heating wire 2, second graphene heating wire 3, and third graphene heating wire 4) is adjusted by the controller to provide differentiated heating for different areas of the mirror surface. Simultaneously, a small fan 13 starts, guiding air into the heating flat square tube 12 for heating before blowing it onto the mirror surface where the defogging component is installed, accelerating fog removal. The condensate is collected in the collection container 20 through the elongated square trough 19 and evaporates through the evaporation hole 21, preventing secondary condensation.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A graphene-based defogging component, comprising a base plate (1), the base plate (1) having a thermally conductive effect, characterized in that: One side of the base plate (1) is provided with a first graphene heating wire (2), a second graphene heating wire (3), and a third graphene heating wire (4) that are independent of each other. The first graphene heating wire (2) and the third graphene heating wire (4) are respectively located at the upper and lower ends of the side, and the second graphene heating wire (3) is located in the middle of the side. The first graphene heating wire (2), the second graphene heating wire (3), and the third graphene heating wire (4) are electrically connected to the power supply (8) through the first controller (5), the second controller (6), and the third controller (7), respectively. An airflow demisting device (9) and a condensate collection device (10) are respectively provided through the upper and lower edges of the base plate (1) on both sides.

2. The graphene-based defogging component according to claim 1, characterized in that: The airflow defogging device (9) includes a guide nozzle assembly (11) and a heating flat square tube (12) connected to the guide nozzle assembly (11). One side of the heating flat square tube (12) is simultaneously attached to the first graphene heating wire (2), the second graphene heating wire (3) and the third graphene heating wire (4). A small fan (13) is connected to the lower part of the heating flat square tube (12). The small fan (13) is used to guide the air through the heating flat square tube (12) for heating and then blow it through the guide nozzle assembly (11) to the side of the base plate (1) away from the first graphene heating wire (2).

3. The graphene-based defogging component according to claim 2, characterized in that: The guide nozzle assembly (11) includes a connecting pipe (14) fixedly disposed through the upper edge of the base plate (1). One end of the connecting pipe (14) near the first graphene heating wire (2) is connected to the heating flat square pipe (12). The other end of the connecting pipe (14) forms an air outlet (15) that bends and points to the side of the base plate (1) away from the first graphene heating wire (2). The inner bottom wall of the connecting pipe (14) is provided with a guide (16) for smoothly guiding the airflow to the air outlet (15).

4. A graphene-based defogging component according to claim 2 or 3, characterized in that: The inner wall of the heating flat square tube (12) is formed with a plurality of horizontally arranged partitions (17) spaced at a certain distance, and the plurality of partitions (17) have openings (18) that form an S-shaped channel inside the heating flat square tube (12).

5. A graphene-based defogging component according to claim 1, characterized in that: The condensate collection device (10) is a long rectangular trough (19), and a collection container (20) is connected in the middle of the long rectangular trough (19).

6. A graphene-based defogging component according to claim 5, characterized in that: The liquid collection container (20) has an evaporation hole (21) at the top.

7. A car rearview mirror, characterized in that: The rearview mirror includes a mirror housing (22), a lens (23), and a defogging assembly as described in any one of claims 1 to 6. The lens (23) is fitted to the side of the base plate (1) of the defogging assembly away from the first graphene heating wire (2), and the lens (23) and the defogging assembly are integrally installed in the mirror housing (22).

Images