Automobile LED headlamp with good waterproof performance

Abstract

The utility model discloses an automobile LED headlamp with good waterproof performance. The automobile LED headlamp comprises a shell, an LED lamp set, a light transmitting mirror and a sealing pressing strip. A first annular groove and a second annular groove are formed in the shell in the circumferential wall direction of the shell, a first annular protruding part used for being embedded in the first annular groove is arranged at the bottom of the light transmitting mirror, a second annular protruding part used for being embedded in the second annular groove is arranged at the bottom of the sealing pressing strip, and a limiting protruding part on the side wall of the second annular protruding part is used for abutting against the side wall of the second annular groove in a limiting mode. According to the automobile LED headlamp, the double-layer sealing effect of the automobile LED headlamp can be achieved through the double-layer structure of the first annular groove and the second annular groove, the first annular groove is used for installing the first annular protruding part of the light-transmitting mirror, the second annular groove is used for installing the second annular protruding part of the sealing pressing strip, and the double-layer sealing structure can effectively prevent water from entering; therefore, the service life of the automobile LED headlamp is prolonged; in addition, the double-layer sealing structure is more suitable for expansion caused by heat and contraction caused by cold, and the problem of sealing failure easily occurring under a single-layer sealing structure is avoided.

Description

Technical Field

[0001] The utility model relates to the field of automobile LED headlights, in particular to an automobile LED headlight with good waterproof performance. Background Art

[0002] Car LED headlights are a type of lighting device installed at the front of a car. They are mainly used to provide adequate road lighting for night driving or in low light conditions. They provide adequate lighting to ensure that the driver can clearly see the road, road signs and other vehicles at night or in poor light conditions, thereby improving driving safety. LED headlights usually include components such as LED light sources, reflectors, light-transmitting mirrors and control circuits.

[0003] In the prior art, conventional LED headlights use the joint between the lamp housing and the light-transmitting mirror to prevent the entry of moisture and dust. The sealing ring is a single-layer sealing structure. When the sealing ring is affected by high temperature, ultraviolet rays and chemicals, it will gradually lose its elasticity and sealing effect, causing water vapor from the external environment to easily enter the headlight to form fog or water accumulation, thereby reducing light output, reducing the lighting effect at night or in bad weather conditions, and affecting the driver's field of vision and driving safety; and, if the waterproof headlight is exposed to a humid environment for a long time, the electronic components inside the headlight will be corroded or damaged, affecting the service life of the car headlight.

[0004] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a car LED headlight with a double-layer sealing structure, which is easy to assemble and can effectively prolong the service life of the car light and has good waterproof performance.

[0006] To achieve this purpose, the utility model adopts the following technical solutions: an automotive LED headlight with good waterproof performance, comprising a housing, an LED lamp group, a light-transmitting mirror and a sealing strip;

[0007] The housing is provided with a housing chamber, the LED lamp group is arranged in the housing chamber, the housing is provided with a first ring groove and a second ring groove along the peripheral wall thereof, the first ring groove is located on the inner side of the second ring groove, and a partition portion is formed between the first ring groove and the second ring groove;

[0008] The light-transmitting mirror is used to scatter the light emitted from the LED lamp group. The bottom of the light-transmitting mirror is provided with a first annular protrusion for being embedded in the first annular groove. The height of the first annular protrusion is equal to the depth of the first annular groove. The side wall of the first annular protrusion is provided with a first pressing plate portion extending horizontally toward the outside. The first pressing plate portion is used to abut against the partition portion.

[0009] The bottom of the sealing strip is provided with a second annular protrusion for being embedded in the second annular groove, and the side wall of the second annular protrusion is provided with a limiting protrusion, and the limiting protrusion is used to abut with the side wall of the second annular groove, and the inner side wall located at the upper part of the sealing strip is provided with a second pressure plate part, and the second pressure plate part is used to abut against the surface of the first pressure plate part.

[0010] By adopting the above technical solution, in the automotive LED headlight with good waterproof performance, the depth of the first annular groove is smaller than the depth of the second annular groove.

[0011] By adopting the above-mentioned technical solutions, in the automotive LED headlight with good waterproof performance, the light-transmitting mirror is in a curved structure, and the height of the light-transmitting mirror gradually decreases from the middle to the edge area.

[0012] By adopting the above-mentioned technical solutions, in the automotive LED headlight with good waterproof performance, the light-transmitting mirror is made of acrylic or polycarbonate.

[0013] By adopting the above-mentioned technical solutions, in the automotive LED headlight with good waterproof performance, the space between the first annular protrusion and the first annular groove is filled with bonding glue.

[0014] By adopting the above-mentioned technical solutions, in the automotive LED headlight with good waterproof performance, the sealing strip is made of silicone, fluororubber, nitrile rubber or polyurethane.

[0015] By adopting the above-mentioned technical solutions, in the automotive LED headlight with good waterproof performance, the width of the first annular groove is smaller than the width of the second annular groove.

[0016] By adopting the above-mentioned technical solutions, the automotive LED headlight with good waterproof performance also includes a reflector, which is arranged in the accommodating chamber and is used to reflect the light emitted by the LED lamp group onto the light-transmitting mirror.

[0017] Compared with the prior art, the utility model has the following beneficial effects:

[0018] The utility model can achieve a double-layer sealing effect of the automobile LED headlight through the double-layer structure of the first ring groove and the second ring groove. The first ring groove is used to install the first ring convex part of the light-transmitting mirror, and the second ring groove is used to install the second ring convex part of the sealing strip. The double-layer sealing structure can effectively block the entry of moisture and dust, thereby improving the service life of the automobile LED headlight; and the double-layer sealing structure is also more adaptable to thermal expansion and contraction, especially in a high temperature environment, the first ring groove and the second ring groove can buffer the expansion of the material to a certain extent, avoiding the cracking or failure problem that is easy to occur in the single-layer sealing structure; the limiting protrusion can be limitedly abutted with the second ring groove to ensure that the sealing strip will not loosen and prevent the entry of moisture and dust; the side wall of the first ring convex part of the light-transmitting mirror is provided with a first pressure plate part extending horizontally toward the outside, and the first pressure plate part abuts on the partition part to prevent the light-transmitting mirror from loosening or shifting, and the structural stability is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0020] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0021] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0022] Figure 2 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the explosion structure of the utility model from another perspective;

[0024] Figure 4 for Figure 3 A schematic diagram of the local enlarged structure of the middle A area;

[0025] Figure 5 It is a schematic diagram of the internal structure of the shell of the utility model. DETAILED DESCRIPTION

[0026] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in 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.

[0027] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", 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. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0028] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0029] like Figures 1 to 5As shown, the embodiment of the utility model provides an automotive LED headlight with good waterproof performance, including a housing 1, an LED lamp group 2, a light-transmitting mirror 3 and a sealing strip 4; the housing 1 is provided with a housing chamber 10, the LED lamp group 2 is arranged in the housing chamber 10, the housing 1 is provided with a first annular groove 11 and a second annular groove 12 along its peripheral wall direction, the first annular groove 11 is located on the inner side of the second annular groove 12, and a partition portion 13 is formed between the first annular groove 11 and the second annular groove 12; the light-transmitting mirror 3 is used to scatter the light emitted from the LED lamp group 2, and the bottom of the light-transmitting mirror 3 is provided with a first annular convex portion for being embedded in the first annular groove 11 Part 31, the height of the first annular protrusion 31 is equal to the depth of the first annular groove 11, and a first pressure plate portion 32 extending horizontally toward the outside is provided on the side wall of the first annular protrusion 31, and the first pressure plate portion 32 is used to abut against the partition portion 13; the bottom of the sealing strip 4 is provided with a second annular protrusion 41 for being embedded in the second annular groove 12, and the side wall of the second annular protrusion 41 is provided with a limiting protrusion 42, and the limiting protrusion 42 is used to abut with the side wall of the second annular groove 12, and the inner side wall located at the upper part of the sealing strip 4 is provided with a second pressure plate portion 43, and the second pressure plate portion 43 is used to abut against the surface of the first pressure plate portion 32. The double-layer structure of the first annular groove 11 and the second annular groove 12 can achieve a double-layer sealing effect of the automobile LED headlight. The first annular groove 11 is used to install the first annular protrusion 31 of the light-transmitting mirror 3, and the second annular groove 12 is used to install the second annular protrusion 41 of the sealing strip 4. The double-layer sealing structure can effectively block the entry of moisture and dust, thereby improving the service life of the automobile LED headlight; and the double-layer sealing structure is more adaptable to thermal expansion and contraction, especially in a high temperature environment, the first annular groove 11 and the second annular groove 12 can buffer the expansion of the material to a certain extent, avoiding the cracking or failure problem that is easy to occur in the single-layer sealing structure; the limiting protrusion 42 can be limitedly abutted with the second annular groove 12 to ensure that the sealing strip 4 will not loosen and prevent the entry of moisture and dust; the side wall of the first annular protrusion 31 of the light-transmitting mirror 3 is provided with a first pressing plate portion 32 extending horizontally toward the outside, and the first pressing plate portion 32 abuts on the partition portion 13 to prevent the light-transmitting mirror 3 from loosening or shifting, and the structural stability is good.

[0030] like Figure 1 As shown, further, the depth of the first annular groove 11 is less than the depth of the second annular groove 12. The first annular groove 11 is shallow, so that the first annular protrusion 31 of the light-transmitting mirror 3 will not be subjected to excessive stress when embedded, and the second annular groove 12 is deep, so that the limiting protrusion 42 of the sealing bead 4 can be embedded more firmly to avoid displacement due to external force.

[0031] like Figure 2As shown, further, the light-transmitting mirror 3 is a curved structure, and the height of the light-transmitting mirror 3 gradually decreases from the middle to the edge area. The curved structure can naturally guide rainwater and other liquids to flow down along the surface of the light-transmitting mirror 3, avoiding water from being retained on the surface of the light-transmitting mirror 3, thereby reducing the chance of water entering the interior of the headlight.

[0032] Furthermore, the light-transmitting mirror 3 is made of acrylic or polycarbonate. In this embodiment, the light-transmitting mirror 3 is made of polycarbonate, which has a very high light transmittance, so that the automobile LED headlight can fully utilize the light emitted by the LED lamp group 2 to provide a bright and clear lighting effect, and the polycarbonate material has excellent weather resistance, and will not age or turn yellow even if exposed to sunlight for a long time, and has a good waterproof effect.

[0033] Furthermore, adhesive glue is filled between the first annular protrusion 31 and the first annular groove 11. The adhesive glue can enhance the bonding strength between the light-transmitting mirror 3 and the housing 1, prevent the light-transmitting mirror 3 from loosening or falling off under vibration or impact conditions, and improve the overall structural stability and durability of the headlight.

[0034] Furthermore, the sealing bead 4 is made of silicone, fluororubber, nitrile rubber or polyurethane. In this embodiment, the sealing bead 4 is made of fluororubber, which has good elastic recovery and can fit tightly in the second annular groove 12 to achieve effective sealing; and fluororubber has excellent weather resistance and can resist long-term erosion by ultraviolet rays, high temperature and other environmental factors, and will not age quickly or lose elasticity due to exposure to sunlight, and has a long service life.

[0035] like Figure 5 As shown, further, the width of the first annular groove 11 is smaller than the width of the second annular groove 12. The first annular groove 11 is smaller in width, which can ensure a close fit between it and the light-transmitting mirror 3 to prevent water and dust from entering; the second annular groove 12 is larger in width to provide enough space for the sealing strip 4 to be better filled and sealed, thereby enhancing the overall waterproof effect.

[0036] like Figure 1 and Figure 5 As shown, further, a reflector 5 is included, the reflector 5 is arranged in the accommodating chamber 10, and the reflector 5 is used to reflect the light emitted by the LED lamp group 2 onto the light-transmitting mirror 3. The reflector 5 can effectively reflect the light emitted by the LED lamp group 2, guide and concentrate it onto the light-transmitting mirror 3, thereby maximizing the use of the light emitted by the light source, reducing the loss of light, and improving the overall lighting effect of the headlamp.

[0037] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A car LED headlight with good waterproof performance, characterized in that: It includes a housing, an LED lamp group, a light-transmitting mirror and a sealing strip; The housing is provided with a housing chamber, the LED lamp group is arranged in the housing chamber, the housing is provided with a first ring groove and a second ring groove along the peripheral wall thereof, the first ring groove is located on the inner side of the second ring groove, and a partition portion is formed between the first ring groove and the second ring groove; The light-transmitting mirror is used to scatter the light emitted from the LED lamp group. The bottom of the light-transmitting mirror is provided with a first annular protrusion for being embedded in the first annular groove. The height of the first annular protrusion is equal to the depth of the first annular groove. The side wall of the first annular protrusion is provided with a first pressing plate portion extending horizontally toward the outside. The first pressing plate portion is used to abut against the partition portion. The bottom of the sealing strip is provided with a second annular protrusion for being embedded in the second annular groove, and the side wall of the second annular protrusion is provided with a limiting protrusion, and the limiting protrusion is used to abut with the side wall of the second annular groove, and the inner side wall located at the upper part of the sealing strip is provided with a second pressure plate part, and the second pressure plate part is used to abut against the surface of the first pressure plate part.

2. The automotive LED headlight with good waterproof performance according to claim 1, characterized in that: The depth of the first annular groove is smaller than the depth of the second annular groove.

3. The automotive LED headlight with good waterproof performance according to claim 1, characterized in that: The light-transmitting mirror is in a curved structure, and the height of the light-transmitting mirror gradually decreases from the middle to the edge area.

4. The automotive LED headlight with good waterproof performance according to claim 3, characterized in that: The light-transmitting mirror is made of acrylic or polycarbonate.

5. The automotive LED headlight with good waterproof performance according to claim 4, characterized in that: The space between the first annular protrusion and the first annular groove is filled with adhesive glue.

6. The automotive LED headlight with good waterproof performance according to claim 5, characterized in that: The sealing strip is made of silicone, fluororubber, nitrile rubber or polyurethane.

7. The automotive LED headlight with good waterproof performance according to claim 2, characterized in that: The width of the first annular groove is smaller than the width of the second annular groove.

8. The automotive LED headlight with good waterproof performance according to claim 1, characterized in that: A reflector is also included. The reflector is arranged in the accommodating chamber and is used to reflect the light emitted by the LED lamp group onto the light-transmitting mirror.

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