Automobile lampshade

Abstract

The utility model belongs to the technical field of automobile lamps, and particularly relates to an automobile lampshade which comprises an arc-shaped lampshade body. The lampshade is covered with a film covering assembly. The film covering assembly comprises an oil film layer covering film, a super-hydrophobic layer covering film, an anti-scraping layer covering film and a sunlight reflecting layer covering film which are sequentially arranged on the outer side of the lampshade, and further comprises a hydrophilic layer covering film arranged on the inner side of the lampshade, and the automobile lampshade has the dustproof, anti-fog and anti-scraping effects.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile lamps, and in particular relates to an automobile lamp cover. Background Art

[0002] The existing Chinese patent with announcement number CN104566192B discloses a lampshade with anti-fog function and a manufacturing method thereof, wherein a layer of transparent conductive film is tightly attached to the inner surface of the lampshade body, and a layer of transparent hydrophobic film is tightly attached to the inner surface of the transparent conductive film; the transparent conductive film is a zinc oxide film doped with 5% aluminum by weight, and the transparent hydrophobic film is a silicon dioxide film; a power interface is fixedly arranged on one side of the lampshade body, and the transparent conductive film is connected to the vehicle power supply through the power interface, and the vehicle power supply supplies power to the transparent conductive film; the silicon dioxide transparent hydrophobic film has good super hydrophobic performance, which can effectively prevent fog droplets from condensing on the inner surface of the lampshade on the one hand, and can effectively isolate the transparent conductive film from electrical contact with the environment inside the lamp on the other hand; the transparent conductive film used is a film that can conduct electricity and heat and has high light transmittance, which effectively prevents the lamp from fogging.

[0003] The above-mentioned existing technical solutions have the following defects: In the current field of automobile lamp manufacturing, lampshades are mainly made of transparent plastics, and the material of automobile lampshades is generally high-grade polycarbonate, also known as PC resin, because polycarbonate materials have high hardness, high toughness, high strength, good light transmittance, and UV resistance, etc., and are the best choice for automobile lampshades. However, this lampshade material does not have the effect of being waterproof, dustproof, and scratch-proof, and in the manufacture of automobile lamps, usually the surface is not treated with too much waterproof, dustproof, and scratch-proof treatment. When encountering special weather such as rainy, snowy, and foggy days, water droplets and water stains are easily attached to the surface of the lamp, and the surface is not scratch-resistant and easily accumulates dust. Over time, the degree of damage to the lamp is relatively serious. If it is not cleaned for a long time, it is easy to affect the use of the lamp and people's vision. In addition, when the headlights encounter special weather, the inside of the headlight cover is prone to fogging. The existing anti-fog and defogging technology for headlights mainly involves placing desiccant inside the headlights. If the desiccant is not replaced for a long time, it is more prone to moisture. The above-mentioned solution only has an anti-fog function, and uses a combination of a transparent conductive film and a hydrophobic film to achieve the anti-fog and defogging function. Therefore, this method cannot solve the fundamental problem. Utility Model Content

[0004] The utility model aims to provide a car lamp cover to solve the technical problem that the car lamp cover is dusty and easily scratched, thus damaging the car lamp, and achieves the purpose of protecting the car lamp from dust and scratches.

[0005] In order to solve the above technical problems, the utility model provides an automobile lampshade, comprising: an arc-shaped lampshade; the lampshade is covered with a film component;

[0006] The coating assembly includes an oil film coating, a super hydrophobic layer coating, a scratch-resistant layer coating, and a sunlight reflecting layer coating which are sequentially arranged on the outside of the lampshade, and also includes a hydrophilic layer coating which is arranged on the inside of the lampshade.

[0007] Furthermore, the transparency of the sunlight reflecting layer coating varies from transparent to semi-transparent.

[0008] Furthermore, the interior of the hydrophilic layer coating contains a plurality of hydrophilic groups, and the surface of the hydrophilic layer coating is covered with a transparent water film through the plurality of hydrophilic groups.

[0009] The beneficial effects of the utility model are:

[0010] 1. By attaching a super-hydrophobic layer and an oil film layer to the outer surface of the lampshade, rainwater hitting the surface of the lampshade will condense into water droplets, which will roll down under the action of gravity, carrying the dust on the surface of the lampshade, thus achieving a waterproof and dustproof effect.

[0011] 2. The anti-scratch layer is made of PET polyester transparent film material. PET polyester transparent film has excellent optical properties, such as good transparency, low haze, and high gloss. The tensile strength and impact strength of transparent PET polyester film are much higher than those of ordinary films. It is attached to the outer surface of the lampshade of the car lamp, which greatly prevents the problem of easy scratches on the surface of the lampshade.

[0012] 3. By attaching a layer of sunlight reflection layer coating on the outer surface of the lampshade, part of the sunlight is reflected out to prevent the temperature of the lampshade from changing drastically, thereby reducing the problem of fogging caused by temperature difference, and attaching a hydrophilic layer coating on the inner surface of the lampshade, using its hydrophilic group to affinity adsorb the internal fog and water vapor, reduce the surface tension of water, reduce the contact angle between water molecules and the inner surface of the mask, and make the water vapor infiltrate, diffuse or adsorb on the surface of the object, forming a transparent water film of uniform thickness instead of a single water droplet, thereby achieving the effect of anti-fog and defogging.

[0013] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0015] Figure 1The utility model is a structural schematic diagram of an automobile lamp cover.

[0016] In the figure:

[0017] 1. Lampshade;

[0018] 2. Coating assembly; 21. Oil film layer coating; 22. Super hydrophobic layer coating; 23. Anti-scratch layer coating; 24. Sunlight reflection layer coating; 25. Hydrophilic layer coating. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Example:

[0021] like Figure 1 As shown, a car lampshade comprises: an arc-shaped lampshade 1; a film component 2 is covered on the lampshade 1;

[0022] The coating assembly 2 includes an oil film coating 21 , a super hydrophobic coating 22 , a scratch-resistant coating 23 , and a sunlight reflecting coating 24 which are sequentially arranged on the outside of the lampshade 1 , and also includes a hydrophilic coating 25 which is arranged on the inside of the lampshade 1 .

[0023] It should be noted that the main component of the oil film layer 21 is glycerin. Usually, water and oil do not mix, so water will automatically form a separation zone when it meets oil. The oil film layer 21 interacts with the super hydrophobic layer 22 to increase the hydrophobicity of the super hydrophobic layer 22, achieving a waterproof function. When water drops are formed, they will take away some dust on the surface of the lampshade 1, thereby achieving a decontamination function.

[0024] The transparent nano-silica coating used in the super-hydrophobic layer coating 22 has the properties of being waterproof, anti-fog, anti-corrosion, anti-fouling, anti-icing and self-cleaning. It is a non-metallic oxide with a large amount of hydroxyl groups on its surface. It has the characteristics of low preparation cost and easy control of particle size, and has good light transmittance. The surface with a contact angle with water greater than 150° is called a super-hydrophobic surface. Since the headlight cover 1 is mostly installed at the four corners of the car, it usually forms a certain angle with the ground to meet the contact angle formed by the super-hydrophobicity, thereby activating the coating function of the super-hydrophobic layer coating 22 to achieve functions such as waterproofing and decontamination.

[0025] The anti-scratch layer coating 23 is mainly made of transparent PET polyester film, which has excellent physical and mechanical properties of ordinary polyester film and excellent optical properties, such as good transparency, low haze, high gloss, and most importantly, the tensile strength and impact strength of the transparent PET polyester film are much higher than those of ordinary films. It is attached to the outer surface of the lampshade 1 of the car lamp, which greatly prevents the problem of easy scratches on the surface of the lampshade 1.

[0026] The transparency of the sunlight reflecting layer coating 24 varies from transparent to semi-transparent.

[0027] It should be noted here that the sunlight reflecting layer coating 24 is made of thermoplastic polyurethane, a thermochromic material. It is transparent at low temperatures, but if the temperature exceeds 32 degrees Celsius, the internal structure will change and become translucent. At this time, it can reflect 70% of the sunlight heat and play a heat-insulating role, thereby reducing the impact of the external temperature on the temperature inside the headlight.

[0028] The hydrophilic layer coating 25 contains a plurality of hydrophilic groups inside, and the surface of the hydrophilic layer coating 25 is covered with a transparent water film through the plurality of hydrophilic groups.

[0029] It should be noted here that the main material of the hydrophilic layer coating 25 is anti-fog coating, which is attached to the inner surface of the lampshade 1 of the vehicle lamp, and uses its hydrophilic groups to affinity adsorb the internal fog and water vapor, thereby reducing the surface tension of water, and reducing the contact angle between water molecules and the inner surface of the lampshade 1, so that the water vapor infiltrates, diffuses or adsorbs on the surface of the object, forming a transparent water film of uniform thickness rather than a single water droplet, which complements the sunlight reflecting layer coating 24, thereby achieving the effect of anti-fog and demisting.

[0030] In summary, the oil film coating 21 is attached to the first layer of the outer surface of the lampshade 1. The main reason for placing the oil film coating 21 on the first layer is that the surface temperature rises due to direct sunlight, which has a certain destructive effect on the oil film. At the same time, if glycerin is attached to the outermost surface, it is easy to absorb fine dust, and many small particles will be formed on the surface of the oil film, which may affect the use of the car lamp. Moreover, because the main component of the oil film is glycerin, since glycerin has a certain water absorption, the effect of glycerin will be reduced to a certain extent after absorbing water. Therefore, the attachment of the second layer of the coating is particularly important; the super hydrophobic coating 21 is attached to the outer surface of the lampshade 1. 2 is attached to the second layer to isolate moisture. The super-hydrophobic layer coating 22 is made of transparent nano-silicon dioxide coating. The nano-silicon dioxide coating has the function of waterproof and self-cleaning. The most important thing is that it has good light transmittance and has no adverse effect on the use of car lights. The oil film layer coating 21 and the super-hydrophobic layer coating 22 are attached together. The oil film layer coating 21 and the super-hydrophobic layer coating 22 can interact with each other and complement each other, which can enhance the waterproof and dustproof effect; the anti-scratch layer coating 23 is attached to the third layer. If the anti-scratch layer coating 23 wants to prevent scratches to the greatest extent, it needs to be The more attached to the outer layer, the better, and the last layer of sunlight reflection layer coating 24 is used to adhere the sunlight reflection layer coating 24 on the anti-scratch layer coating 23, so as to minimize the influence of temperature on the entire headlight cover 1 and its inner and outer four layers of coating. The sunlight reflection layer coating 24 is made of thermoplastic polyurethane, which can reflect 70% of the sunlight heat to a certain extent, and greatly reduce the influence of temperature on the internal structure of the headlight; the inner surface of the headlight cover 1 is attached with a hydrophilic layer coating 25, and the main material of the hydrophilic layer coating 25 is anti-fog coating, which uses its hydrophilic group to affinity with the internal fog and water vapor. Adsorption reduces the surface tension of water, reduces the contact angle between water molecules and the inner surface of the lampshade 1, and makes water vapor infiltrate, diffuse or adsorb on the surface of the object to form a transparent water film of uniform thickness rather than a single water droplet. The hydrophilic layer coating 25 mainly functions to defog. The fourth layer of sunlight reflecting layer coating 24 on the outer surface of the lampshade 1 mainly functions to reduce the temperature change inside the lamp by reflecting light, and reduce the temperature difference between the inside and outside of the lamp, thereby playing an anti-fog role. The two layers of coating, the hydrophilic layer coating 25 and the sunlight reflecting layer coating 24, work together to achieve a certain anti-fog and defogging effect.

[0031] The various devices selected in this application are all universal standard parts or parts known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0032] In the description of the embodiments of the present invention, unless otherwise clearly 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, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] 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 the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A car lampshade, characterized in that: include: An arc-shaped lampshade (1); the lampshade (1) is covered with a film component (2); The coating assembly (2) comprises an oil film layer coating (21), a super hydrophobic layer coating (22), an anti-scratch layer coating (23), and a sunlight reflection layer coating (24) which are sequentially arranged on the outside of the lampshade (1), and also comprises a hydrophilic layer coating (25) which is arranged on the inside of the lampshade (1).

2. The automobile lampshade according to claim 1, characterized in that: The transparency of the sunlight reflection layer coating (24) varies from transparent to semi-transparent.

3. The automobile lampshade according to claim 1, characterized in that: The hydrophilic layer coating (25) contains a plurality of hydrophilic groups inside, and the surface of the hydrophilic layer coating (25) is covered with a transparent water film through the plurality of hydrophilic groups.

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