A structure for solving the problem of dark areas in thick-walled parts when viewed from above

Abstract

The utility model belongs to the technical field of automobile lamps. The utility model proposes a structure for solving the problem of dark areas when looking down on thick-walled parts, comprising a light source part and a thick-walled part arranged in front of the light source part for guiding light. A lens is also arranged on the side of the thick-walled part close to the light source part, and a Fresnel pattern is provided on the curved surface structure of the lens. Light emitted from the light source part enters the side of the Fresnel pattern and is refracted. When the light is emitted along the side of the thick-walled part away from the light source part, the light is in a parallel state. By changing the pattern on the inner surface of the thick-walled part into a lens structure with the Fresnel pattern, the light emitted from the light guide body is corrected, and the direction of the light is improved, thereby eliminating the dark area.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile lamps, and particularly relates to a structure for solving the problem of dark areas in thick-walled parts when viewed from above. Background Art

[0002] Car headlights are tools for lighting the road at night and are also tools for issuing various vehicle driving signals. They are generally divided into headlights, taillights, turn signals, etc. According to the type of light, they can be divided into xenon lamps, LED lamps, halogen lamps and laser lamps, etc.

[0003] At present, the solution of automobile headlight guide + thick wall parts, such optical structure on the market is prone to the problem of dark lines when looking down. Figure 2 As shown, the dark line when viewed from above is caused by the reflection of the upper and lower side walls of the thick-walled part. The conventional pattern of thick-walled parts and the leather grain or stripe structure of the side walls of thick-walled parts cannot optimize the dark line when viewed from above.

[0004] Therefore, a structure for solving the dark area of ​​thick-walled parts when viewed from above is proposed to solve the above problem. Utility Model Content

[0005] The utility model provides a structure for solving the problem of dark areas in thick-walled parts when viewed from above, thereby solving the problems in the prior art.

[0006] The technical solution of the utility model is achieved in this way:

[0007] A structure for solving the problem of dark areas when looking down on thick-walled parts, comprising a light source part, a thick-walled part arranged in front of the light source part for guiding light, a lens is also arranged on one side of the thick-walled part close to the light source part, and a Fresnel pattern is provided on the curved surface structure of the lens;

[0008] The light emitted from the light source enters one side of the Fresnel pattern and is refracted. When the light is emitted along the side of the thick-walled part away from the light source, the light is in a parallel state.

[0009] Furthermore, the light source unit includes a light guide body, an upper light guide bracket and a lower light guide bracket which are arranged up and down along the light guide body.

[0010] Furthermore, the upper bracket of the light guide and the lower bracket of the light guide are used to support and fix the light guide body, and control the position deviation of the light guide body along the X / Y / Z directions.

[0011] Furthermore, the light guide body is a spherical or fan-shaped structure.

[0012] Furthermore, the angle between the virtual straight line L formed by the light spot diffused up and down by the light guide body and the horizontal line is less than or equal to 15 degrees.

[0013] Furthermore, the structure for solving the problem of dark areas in thick-walled parts when viewed from above also includes an outermost lampshade and a decorative ring disposed on the inner wall of the lampshade.

[0014] Furthermore, the lampshade is two-color.

[0015] After adopting the above technical solution, the beneficial effects of the utility model are:

[0016] 1. In the utility model, by changing the pattern on the inner surface of the thick-walled part into a lens structure with a Fresnel pattern, the light emitted by the light guide body is corrected and the direction of the light is improved, thereby eliminating the dark area.

[0017] 2. In the utility model, brackets are provided at the upper and lower parts of the light guide body to correct the position deviation of the light guide body on the X / Y / Z axes, thereby avoiding the defocusing problem when the light source passes through the inner surface pattern of the thick-walled part. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 This is a schematic diagram of the overall structure used in this utility model to solve the dark area of ​​thick-walled parts when viewed from above;

[0020] Figure 2 It is a schematic diagram of a dark area formed by the reflection of light from the light guide body by a thick-walled part in the prior art;

[0021] Figure 3 This is a schematic diagram of eliminating the dark area of ​​the reflected light of the light guide body by the thick wall part of the utility model;

[0022] Figure 4 It is a schematic diagram of the front and back comparison between the light guide body and the thick-walled part in the prior art and the light guide body and the thick-walled part in the utility model;

[0023] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the light guide body and the thick-walled member in the prior art after being illuminated;

[0024] Figure 6 for Figure 4 The enlarged structural diagram of the light guide body and the thick-walled member in the utility model is combined and lit;

[0025] Figure 7 This is a schematic diagram of the simulation results of the combination of the light guide body and the thick-walled part in the utility model;

[0026] Figure 8 A schematic diagram showing the lighting comparison after the light spot of the light guide body passes through a thick-walled part at an upward observation angle of 60 degrees, 45 degrees, and 30 degrees;

[0027] Fig. 9 Schematic diagram of lighting comparison when the light guide body is viewed at an upward angle of 15 degrees, 10 degrees, and horizontally illuminated after passing through a thick-walled part;

[0028] Fig.10 This is a schematic diagram of the lighting comparison of the light guide body after irradiating through a thick-walled part at angles of 10 degrees for downward observation, 20 degrees for outward diffusion, and 20 degrees for inward diffusion.

[0029] In the figure, 1, lampshade; 2, bracket above the light guide; 3, thick-walled part; 31, collimation structure; 4, light guide body; 5, bracket below the light guide; 6, decorative ring. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only 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.

[0031] Example: Figure 1 As shown, a structure for solving the problem of dark areas when looking down on thick-walled parts comprises an outermost lampshade 1, a thick-walled part 3 located inside the lampshade 1, and a light guide body 4, wherein the light guide body 4 is arranged directly behind the thick-walled part 3, and the light spot emitted by the light guide body 4 passes through the thick-walled part 3 and the lampshade 1 to finally form a vehicle-mounted lamp for lighting, indication or other functions;

[0032] The lampshade 1 is two-color, and a decorative ring 6 is provided along the inner wall of the lampshade 1;

[0033] Among them, the upper bracket 2 of the light guide and the lower bracket 5 of the light guide are also arranged along the upper and lower sides of the light guide body 4, which are used to fix and support the light guide body 4;

[0034] like Figure 3 As shown, the inner surface of the thick-walled member 3 is also provided with a collimating structure 31, the collimating structure 31 is a lens, and a Fresnel pattern is provided on the curved surface structure of the lens;

[0035] During actual lighting, the light emitted by the light guide body 4 first enters along the inner surface of the thick-walled member 3. Since the lens arranged on the inner surface of the thick-walled member 3 has a collimating effect, the light emitted by the light guide body 4 is refracted by the Fresnel pattern, and multiple light rays entering the thick-walled member 3 from different angles are transformed into parallel straight lines from multiple angles, and finally emitted along the other side of the thick-walled member 3, thereby eliminating the problem of Figure 2 Dark areas in

[0036] In addition, the upper bracket 2 of the light guide and the lower bracket 5 of the light guide can control the position deviation of the light guide body 4 along the X / Y / Z directions (the deviation of the light guide body 4 along the three axes is controlled within ±0.1 mm);

[0037] like Figure 3 As shown, the light spot emitted by the light guide body 4, the virtual line L formed by the upward and downward diffusion, the angle between the straight line L and the horizontal line should be less than or equal to 15 degrees. When the light spot diffusion angle is within this angle, the light reflected by the lower side wall of the thick-walled part 3 can be reduced;

[0038] Figure 4-6 As shown, when the up-down angle of the light guide body 4 is 10 degrees, the lighting effect after refraction by the thick-walled member 3 in the present application, it can be seen from the figure that the dark area of ​​the optimized thick-walled member 3 disappears, and the overall brightness is more uniform;

[0039] In addition, if Figure 8 As shown, the light guide body 4 is also provided at other angles, such as when the light spot of the light guide body 4 is at an upward angle of 60 degrees, 45 degrees and 30 degrees, the light spot at this angle is refracted after passing through the thick-walled member 3 in the present application to obtain a lighting effect, and the lighting area thereof is significantly smaller than the lighting area at an angle of 10 degrees;

[0040] like Fig. 9 As shown, when the irradiation range of the light guide body 4 is 20 degrees, 10 degrees and horizontal, the lighting effect comparison diagram of the light spot after being refracted by the thick-walled member 3;

[0041] and Fig.10 It shows the lighting effect comparison when the light spot irradiation range of the light guide body 4 is 10 degrees downward, 20 degrees outward, and 20 degrees inward;

[0042] Therefore, it can be seen from the above comparison figures that when the angle between the light spot emitted by the light guide body 4 and the horizontal line is within 15 degrees, the lighting effect is best after refraction by the thick-walled member 3;

[0043] In addition, the light guide body 4 can also be a spherical structure or a partial fan-shaped structure, which can be selected according to needs. For example, the light guide body 4 with a spherical structure has a higher light efficiency, while the light guide body 4 with a partial fan-shaped structure can increase the uniformity of the light spot emitted by the light guide, so that the light finally formed by the car lamp meets specific requirements according to needs.

[0044] 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, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure for solving the problem of dark areas in thick-walled parts when viewed from above, comprising a light source part and a thick-walled part arranged in front of the light source part for guiding light, characterized in that: A lens is also provided on one side of the thick-walled member close to the light source, and a Fresnel pattern is provided on the curved surface structure of the lens; The light emitted from the light source enters one side of the Fresnel pattern and is refracted. When the light is emitted along the side of the thick-walled part away from the light source, the light is in a parallel state.

2. The structure for solving the problem of dark areas in thick-walled parts when viewed from above according to claim 1 is characterized in that: The light source part comprises a light guide body, an upper light guide bracket and a lower light guide bracket which are arranged up and down along the light guide body.

3. The structure for solving the problem of dark areas in thick-walled parts when viewed from above according to claim 2 is characterized in that: The upper bracket of the light guide and the lower bracket of the light guide are used to support and fix the light guide body, and control the position deviation of the light guide body along the X / Y / Z directions.

4. The structure for solving the problem of dark areas in thick-walled parts when viewed from above according to claim 3 is characterized in that: The light guide body is a spherical or fan-shaped structure.

5. The structure for solving the problem of dark areas in thick-walled parts when viewed from above according to claim 4 is characterized in that: The angle between the virtual straight line L formed by the light spot diffused up and down by the light guide body and the horizontal line is less than or equal to 15 degrees.

6. The structure for solving the problem of dark areas in thick-walled parts when viewed from above according to claim 1 is characterized in that: The structure for solving the problem of dark areas in thick-walled parts when viewed from above also includes an outermost lampshade and a decorative ring arranged on the inner wall of the lampshade.

7. The structure for solving the problem of dark areas in thick-walled parts when viewed from above according to claim 6 is characterized in that: The lampshade is two-color.

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