Automobile lens for preventing fogging

Abstract

The automobile lens comprises a main frame, a lens body and a positioning cover, the positioning cover is arranged at the outer end of the lens body in a covering mode, an opening allowing the front end of the lens body to stretch out is formed in the front end wall of the positioning cover, and a sealing strip tightly abutting against the lens body is bonded to the inner wall of the front end of the positioning cover; the lens comprises a base body, and an anti-fog layer is arranged on the outer surface of the base body. According to the utility model, the surface of the lens is coated with the anti-fog layer, and the super-hydrophilic coating has great affinity to water, so that the contact angle between fog drops formed in rainy days and the surface of the coating tends to be zero, the fog drops slip off under the action of gravity, and most of stains can be taken away while the fog drops are not easy to form, thereby achieving the anti-fog and self-cleaning effects; therefore, the light-transmitting effect of the lens is ensured; in addition, an O-shaped sealing ring and a sealing strip are designed at the connecting position of the lens and the positioning cover, the double waterproof effect can be achieved, and it is avoided that moisture enters the lens, and the lighting effect is affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile lenses, in particular to an automobile lens for preventing fogging. Background Art

[0002] The car lens has the function of focusing light, just like a magnifying glass, which can gather light and make the headlights shine farther. Another function is to limit the angle of light to prevent the divergent light from affecting other drivers and pedestrians.

[0003] The existing automobile lens assembly is generally installed on the rear shell of the automobile headlight through a frame. After the automobile headlight is used for a long time, moisture is easy to enter the interior, and the entered moisture is easy to form droplets and adhere to the lens surface, which affects the normal light transmission function of the lens.

[0004] In view of this, an automobile lens for preventing fogging is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a car lens for preventing fogging in order to solve the above-mentioned problem.

[0006] The technical solution adopted by the utility model is as follows: an automobile lens for preventing fogging, comprising a main frame, a lens and a positioning cover, wherein the positioning cover is arranged at the outer end of the lens and its front end wall is provided with an opening to meet the extension of the front end of the lens, and a sealing strip tightly abutting against the lens is bonded to the front end inner wall of the positioning cover; the lens comprises a substrate, and an anti-fogging layer is arranged on the outer surface of the substrate.

[0007] In a preferred embodiment, the anti-fog layer is formed by coating a transparent super-hydrophilic coating, and the thickness of the anti-fog layer is 10 nm to 35 nm.

[0008] In a preferred embodiment, the front end of the lens is semicircular, and the inner end surface of the lens protrudes outward to form an annular convex surface.

[0009] In a preferred embodiment, the rear end of the annular convex surface is tightly against the front end surface of the main frame, and a through hole coaxial with the lens is opened in the center of the main frame.

[0010] In a preferred embodiment, the positioning cover is installed on the front end of the main frame by means of an internal thread.

[0011] In a preferred embodiment, an O-ring is embedded in the inner end surface of the positioning cover, and the outer end of the annular convex surface is tightly against the inner end surface of the O-ring.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0013] 1. In the utility model, an anti-fog layer is coated on the surface of the lens. The super-hydrophilic coating has a great affinity for water. When it rains, the contact angle between the fog droplets formed and the coating surface tends to zero. The fog droplets slide down under the action of gravity, which is not easy to fog and can also take away most of the stains, playing an anti-fog and self-cleaning role, thereby ensuring the light transmission effect of the lens;

[0014] 2. In the present invention, an O-ring and a sealing strip are designed at the connection between the lens and the positioning cover, which can achieve a double waterproof effect and prevent moisture from entering the interior of the lens and affecting the lighting effect;

[0015] 3. In the utility model, the lens is positioned by the cooperation between the positioning cover and the main frame. When the lens is oxidized after long-term use, the lens can be replaced by unscrewing the positioning cover, which makes disassembly and assembly more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the cross-sectional plan structure of the utility model as a whole;

[0018] Figure 3 for Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0019] Figure 4 It is a schematic diagram of the layered structure of the lens in the utility model.

[0020] Markings in the figure: 1-main frame, 11-positioning cover, 111-opening, 2-lens, 21-annular convex surface, 211-base, 212-anti-fog layer, 3-O-ring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] Reference Figure 1-4A car lens for preventing fogging comprises a main frame 1, a lens 2 and a positioning cover 11. The positioning cover 11 is arranged at the outer end of the lens 2 and its front end wall is provided with an opening 111 for the front end of the lens 2 to extend outward. The inner end surface of the lens 2 protrudes outward to form an annular convex surface 21. The rear end of the annular convex surface 21 is tightly against the front end surface of the main frame 1. A through hole which is coaxial with the lens 2 is provided at the center of the main frame 1. The positioning cover 11 is installed at the front end of the main frame 1 through an internal thread. The lens 2 is positioned by the cooperation between the positioning cover 11 and the main frame 1. When the lens is oxidized after long-term use, the lens 2 can be replaced by unscrewing the positioning cover 11, which makes disassembly and assembly more convenient.

[0023] Among them, the front end of the lens 2 is semicircular in shape, and the above shape can achieve a better focusing effect.

[0024] Furthermore, a sealing strip 4 is bonded to the inner wall of the front end of the positioning cover 11, which is tightly against the lens 2. An O-ring 3 is embedded in the inner end face of the positioning cover 11. The outer end of the annular convex surface 21 is tightly against the inner end face of the O-ring 3. The O-ring 3 and the sealing strip 4 are designed at the connection between the lens 2 and the positioning cover 11, which can achieve a double waterproof effect and prevent moisture from entering the interior of the lens 2 and affecting the lighting effect.

[0025] The lens 2 includes a substrate 211, and an anti-fog layer 212 is arranged on the outer surface of the substrate 211. The anti-fog layer 212 is formed by coating a transparent super-hydrophilic coating. The thickness of the anti-fog layer 212 is 10nm to 35nm. The anti-fog layer 212 is coated on the surface of the lens 2. The super-hydrophilic coating has a great affinity for water. When it rains, the contact angle between the fog droplets formed and the coating surface tends to zero. The fog droplets slide down under the action of gravity, are not easy to fog, and can also take away most of the stains, thereby playing an anti-fog and self-cleaning role, thereby ensuring the light transmission effect of the lens 2.

[0026] The substrate 211 is made of glass, and the super-hydrophilic coating is a commonly used material, and the specific composition is not described here.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An automobile lens for preventing fogging, comprising a main frame, a lens and a positioning cover, characterized in that: The positioning cover is arranged at the outer end of the lens and its front end wall is provided with an opening to allow the front end of the lens to extend out. A sealing strip tightly against the lens is bonded to the front end inner wall of the positioning cover. The lens includes a substrate, and an anti-fog layer is arranged on the outer surface of the substrate.

2. The anti-fogging automotive lens according to claim 1, characterized in that: The anti-fog layer is formed by coating a transparent super-hydrophilic coating, and the thickness of the anti-fog layer is 10nm to 35nm.

3. The anti-fogging automotive lens according to claim 1, characterized in that: The front end of the lens is semicircular, and the inner end surface of the lens protrudes outward to form an annular convex surface.

4. The anti-fogging automotive lens according to claim 3, characterized in that: The rear end of the annular convex surface is tightly against the front end surface of the main frame, and a through hole which is coaxial with the lens is opened at the center of the main frame.

5. The anti-fogging automotive lens according to claim 1, characterized in that: The positioning cover is installed on the front end of the main frame by means of the internal thread.

6. The anti-fogging automotive lens according to claim 4, characterized in that: An O-shaped sealing ring is embedded in the inner end surface of the positioning cover, and the outer end of the annular convex surface is tightly against the inner end surface of the O-shaped sealing ring.

Images