Anti-corrosion car lamp shell

Abstract

The utility model discloses an anti-corrosion car lamp housing which comprises a bottom housing installed in a car and an outer lamp housing correspondingly installed at the outer end of the bottom housing, the outer lamp housing comprises a base layer and an outer protection layer evenly sprayed on the outer surface of the base layer, and the edge of the upper end of the bottom housing sinks inwards to form a limiting groove. The outer protection layer is designed on the surface of the outer lamp shell, the super-hydrophilic coating has high affinity to water, the contact angle between raindrops and the surface of the coating tends to be zero when it rains, the raindrops spread on the surface of the coating quickly to form a uniform water film, the water film slides off under the action of gravity, and the water film is prevented from falling off. Most of stains can be taken away while fogging and raindrop adhesion are not easy to occur, so that the anti-fogging and self-cleaning effects are achieved; and meanwhile, the coating also contains BaSO4 particles, and the BaSO4 particles have the advantages of acid and alkali resistance, high strength and the like, so that a corrosion-resistant and wear-resistant protection surface can be formed on the surface of the outer lamp shell, and the service life of the automobile lamp shell can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile accessories, in particular to a lamp housing for a vehicle lamp which is anti-corrosion. Background Art

[0002] Cars are the most common means of transportation at present. Headlights are important components of cars, providing necessary lighting for driving. The headlight housing is composed of a bottom shell and a mask (outer lamp housing).

[0003] At present, the outer lamp shell is generally made of PC or PMMA materials. Since the outer lamp shell is always exposed to the outside and is exposed to light, rain and other influences for a long time, the surface of the outer lamp shell is prone to yellowing, oxidation and corrosion, which will affect the light transmission effect of the outer lamp shell.

[0004] In view of this, a lamp housing for a vehicle lamp that is resistant to corrosion is proposed. Utility Model Content

[0005] The purpose of the utility model is to provide a lamp housing for a vehicle lamp which is resistant to corrosion in order to solve the above-mentioned problem.

[0006] The technical solution adopted by the utility model is as follows: a corrosion-resistant lamp housing for a vehicle lamp, comprising a bottom shell installed in a vehicle and an outer lamp housing correspondingly installed at the outer end of the bottom shell, the outer lamp housing comprising a base layer and an outer protective layer uniformly sprayed on the outer surface of the base layer, the upper end edge of the bottom shell sinks inward to form a limited groove, the bottom edge of the bottom shell is formed with a mounting convex ring outward, a plurality of threaded holes are equidistantly formed at the bottom end of the mounting convex ring, and a through hole is formed at the upper end edge of the outer lamp housing corresponding to the threaded holes.

[0007] In a preferred embodiment, the base layer is made of PC or PMMA material by injection molding.

[0008] In a preferred embodiment, the outer protective layer is composed of a super-hydrophilic coating body and nanoparticles distributed in the super-hydrophilic coating body, and the thickness of the outer protective layer is 20 nm to 30 nm.

[0009] In a preferred embodiment, the nanoparticles are BaSO4 particles, and the particle size of the nanoparticles is 1 nm to 10 nm.

[0010] In a preferred embodiment, a bottom end surface of the outer lamp housing is protruded to form a limiting convex surface matched with the limiting groove.

[0011] In a preferred embodiment, the outer edge of the mounting protrusion ring protrudes equidistantly to form a plurality of positioning buckle points, the outer end faces of the positioning buckle points are semicircular, and the upper end face of the bottom shell is provided with buckle positions that meet the requirements of buckling with the positioning buckle points.

[0012] In a preferred embodiment, a snake glue having the same shape as the limiting groove is embedded in the limiting groove.

[0013] In summary, due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0014] 1. In the utility model, an outer protective layer is designed on the surface of the outer lamp housing. The hydrophilic coating has a great affinity for water. Water droplets quickly spread on its surface to form a uniform water film. The water film slides down under the action of gravity, is not easy to fog and adhere to raindrops, and can also take away most of the stains, playing an anti-fog and self-cleaning role, which can ensure that the light can be normally emitted from the outer lamp housing and ensure the lighting quality of the lamp body;

[0015] 2. In the utility model, the coating also contains BaSO4 particles. Since BaSO4 particles have the advantages of acid and alkali resistance and high strength, they can form a corrosion-resistant and wear-resistant protective surface on the surface of the outer lamp shell. The outer lamp shell is not easy to corrode and wear, thereby improving the service life of the lamp shell. 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 three-dimensional structure of the utility model after the bottom shell and the outer lamp shell are separated;

[0018] Figure 3 It is a schematic diagram of the layered structure of the inner and outer lamp housings of the utility model.

[0019] Markings in the figure: 1- bottom shell, 11- buckle position, 12- limiting groove, 13- through hole, 2- outer lamp shell, 211- base layer, 212- outer protective layer, 3- positioning buckle point, 4- mounting convex ring, 5- limiting convex surface. DETAILED DESCRIPTION

[0020] 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.

[0021] Reference Figure 1-3A lamp housing for preventing corrosion includes a bottom housing 1 installed in a vehicle and an outer lamp housing 2 correspondingly installed at the outer end of the bottom housing 1. The outer lamp housing 2 includes a base 211 and an outer protective layer 212 formed by uniformly spraying the outer surface of the base 211. The outer protective layer 212 is composed of a super-hydrophilic coating body and nanoparticles distributed in the super-hydrophilic coating body. The outer protective layer 212 is designed on the surface of the outer lamp housing 2. The hydrophilic coating has a great affinity for water. When it rains, the contact angle between raindrops and the surface of the hydrophilic coating tends to zero, and the water droplets quickly spread on its surface to form a uniform water film. The water film slides down under the action of gravity, is not easy to fog and adhere to raindrops, and can also take away most of the stains, thereby playing an anti-fog and self-cleaning role.

[0022] The hydrophilic coating is selected from transparent hydrophilic coating, which will not affect the lighting operation of the outer lamp housing 2 itself. Since the hydrophilic coating is a commonly used coating, the specific model and specific composition are not described here.

[0023] In addition, a slot for installing a halogen lamp or other types of lamps is reserved in the bottom shell 1.

[0024] Furthermore, the upper edge of the bottom shell 1 sinks inward to form a limiting groove 12, and a mounting convex ring 4 is formed outward at the bottom edge of the bottom shell 1. A plurality of threaded holes are equidistantly formed at the bottom end of the mounting convex ring 4, and a through hole 13 is formed at the upper edge of the outer lamp shell 2 corresponding to the threaded hole. When the bottom shell 1 and the outer lamp shell 2 are combined, a screw (not shown in the figure) can be passed through the through hole 13 and installed in the threaded hole, and the bottom shell 1 and the outer lamp shell 2 can be fixed by the screws. At the same time, the screws are hidden inside, which is more beautiful and less likely to leak later.

[0025] Furthermore, the base layer 211 is made of PC or PMMA material by injection molding. PC or PMMA material has the characteristics of chemical corrosion resistance, high temperature resistance, light weight, good formability, etc., and is suitable for mass production of automobiles.

[0026] Furthermore, the nanoparticles are BaSO4 particles, and the particle size of the nanoparticles is 1nm to 10nm. The coating also contains BaSO4 particles. Since BaSO4 particles have the advantages of acid and alkali resistance and high strength, they can form a corrosion-resistant and wear-resistant protective surface on the surface of the outer lamp shell, thereby increasing the service life of the lamp shell. Secondly, the BaSO4 particles themselves are sulfate-based and have hydrophilic ability, so they will not affect the anti-fog and self-cleaning operations.

[0027] Furthermore, the bottom end surface of the outer lamp shell 2 is protruded to form a limiting convex surface 5 that is compatible with the limiting groove 12. Through the cooperation of the limiting convex surface 5 and the limiting groove 12, it can assist in limiting the installation position of the outer lamp shell 2 and the bottom shell 1 while also playing an auxiliary sealing role to improve the waterproof performance. The interior of the limiting groove 12 is embedded with a snake glue of the same shape as the outer lamp shell 2. Before the outer lamp shell 2 and the bottom shell 1 are combined, the inserted snake glue is first hot-melted using an oven or other heating equipment, and the snake glue is used as an auxiliary connecting piece and sealing piece between the outer lamp shell 2 and the bottom shell 1.

[0028] Furthermore, the outer edge of the mounting convex ring 4 is equidistantly protruded to form a plurality of positioning buckle points 3, the outer end faces of the positioning buckle points 3 are semicircular, and the upper end face of the bottom shell 1 is provided with buckle positions 11 that meet the requirements of buckling with the positioning buckle points 3. Through the cooperation of the positioning buckle points 3 and the buckle positions, the combined position of the bottom shell 1 and the outer lamp shell 2 can be assisted to limit the combined position, thereby ensuring the combined strength of the bottom shell 1 and the outer lamp shell 2.

[0029] 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. A lamp housing for a vehicle lamp that prevents corrosion, comprising a bottom housing installed in a vehicle and an outer lamp housing correspondingly installed at an outer end of the bottom housing, characterized in that: The outer lamp shell includes a base layer and an outer protective layer uniformly sprayed on the outer surface of the base layer. The upper edge of the bottom shell sinks inward to form a limited groove. The bottom edge of the bottom shell forms a mounting protrusion outward. The bottom end of the mounting protrusion is provided with a plurality of threaded holes equidistantly formed therein. The upper edge of the outer lamp shell is provided with a through hole corresponding to the threaded hole.

2. The anti-corrosion lamp housing of claim 1, characterized in that: The base layer is made of PC or PMMA material by injection molding.

3. The anti-corrosion lamp housing of claim 1, characterized in that: The thickness of the outer protective layer is 20nm-30nm.

4. The anti-corrosion lamp housing of claim 1, characterized in that: The bottom end surface of the outer lamp housing is protruded to form a limiting convex surface matched with the limiting groove.

5. The anti-corrosion lamp housing of claim 1, characterized in that: The outer edge of the mounting convex ring is equidistantly protruded to form a plurality of positioning buckle points, the outer end faces of the positioning buckle points are semicircular, and the upper end face of the bottom shell is provided with buckle positions that meet the requirements of buckling with the positioning buckle points.

6. The anti-corrosion lamp housing of a vehicle lamp as claimed in claim 1, characterized in that: The interior of the limiting groove is embedded with a snake glue having the same shape as the limiting groove.

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