Stepless thick-wall optical structure of automobile signal lamp

Abstract

The invention relates to the technical field of automobile lamp illumination, and particularly discloses an automobile signal lamp step-free thick-wall optical structure which comprises a side projection thick wall, an incident plane A, a reflecting plane, a light-emitting plane A, a light-emitting plane B and a light-emitting plane C. The incident plane A and the reflecting plane A are arranged on the top of the side projection thick wall, and the light-emitting plane A is arranged on one side of the side projection thick wall and forms an included angle C with the incident plane A. The light-emitting plane B is arranged on one side, away from the reflecting plane, of the side projection thick wall. The emergent surface A is arranged on the front side of the reflecting surface; and the step-free patterns are laid on the light-emitting surface A and the reflecting surface and are used for adjusting the light-emitting direction and converging the light to the center. After light enters the condenser and is collimated, the propagation path of the light is adjusted from the Z direction to the X direction through the reflecting surface, then the light passes through the step-free patterns, dimming is carried out under the action of the step-free patterns, the light is broken to the center, laws and regulations are met, meanwhile, light distribution of the light emitting surface is effectively optimized, outer side bright spots caused by steps are avoided, and the light emitting efficiency is improved. And the visual effect of the thick wall is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle lamp lighting, and particularly to a stepless thick-wall optical structure for automotive signal lamps. Background Art

[0002] With the continuous development of the science and technology of automotive lamps and the aesthetics of appearance styling, the automotive styling is undergoing one transformation after another. As an important manifestation of the aesthetics of automotive styling, the appearance of vehicle lamps has become a competitive evaluation factor for consumers when making purchases. At the same time, the prosperous development of the automotive market has brought more choices to consumers. Automotive lamps are no longer just lighting tools that meet the requirements of regulations, but also an interactive window that meets the aesthetics of consumers. However, while the styling is being iterated, the uniformity of the lighting of vehicle lamps is a key factor in matching the styling and enhancing the aesthetic feeling, which puts higher requirements on the optical design of vehicle lamps.

[0003] For a thick-wall optical system, due to its optical characteristics and the limitations of the styling on the optical system, the patterns on the thick wall must have steps, and the light can be calibrated through the steps to the HV to meet the regulatory requirements. Since the patterns on the thick wall must have steps, in addition to causing an unappealing appearance, when the light source is turned on, light will leak out at the steps of the thick-wall patterns, forming bright spots, and the light output uniformity needs to be optimized. Summary of the Invention

[0004] In view of the above problems, the present invention proposes a stepless thick-wall optical structure for automotive signal lamps to solve the existing drawbacks.

[0005] To achieve the object of the present invention, the present invention is realized through the following technical solutions: A stepless thick-wall optical structure for automotive signal lamps, comprising:

[0006] A side-projecting thick wall, on the top of which there is an incident surface A, and on the incident surface A there is a condenser for calibrating light rays;

[0007] A reflecting surface, arranged on one side of the side-projecting thick wall and forming an angle C with the incident surface A, the reflecting surface is placed below the condenser and is used for changing the incident angle of light rays;

[0008] An outgoing surface A, arranged on the side of the side-projecting thick wall away from the reflecting surface, and the outgoing surface A is placed in front of the reflecting surface;

[0009] Stepless patterns, laid on the outgoing surface A and the reflecting surface, and are used for adjusting the outgoing direction of the outgoing surface A and converging the light rays towards the center.

[0010] A further improvement lies in that: the non-step pattern includes a plurality of arc-shaped protrusions, and the arc-shaped protrusions are arranged in an array on the light-emitting surface A. A starting angle line and an ending angle line are formed at the boundary of the arc-shaped protrusion. An included angle A is formed between the starting angle line and the normal line of the light-emitting surface A, and an included angle B is formed between the ending angle line and the normal line of the light-emitting surface A;

[0011] Among them, -90° ≤ included angle A ≤ 90°, -90° ≤ included angle B ≤ 90°.

[0012] A further improvement lies in that: an LED light source is provided on one side of the condenser, and the degree of light scattering of the arc-shaped protrusion is adjusted by changing the Conic parameter of the LED light source. The Conic parameter has three adjustment methods;

[0013] Adjustment method 1: Set the Conic parameter to C1, where 0 < C1 < 0.5;

[0014] Adjustment method 2: Set the Conic parameter to C2, where 0.5 < C2 < 1;

[0015] Adjustment method 3: Set the Conic parameter to C3, where C3 = 0.5.

[0016] A further improvement lies in that: the included angle C is 45°.

[0017] A further improvement lies in that: the condenser includes a light cup and a cone. The light cup is fixedly arranged on the incident surface A, and the cone is fixedly arranged at the center of the light cup.

[0018] A further improvement lies in that: the lower trim frame A and the upper trim frame A for fixing the side-thrown thick wall are provided at the bottom and top of the side-thrown thick wall.

[0019] A further improvement lies in that: it further includes a thick-wall light guide. The thick-wall light guide is placed in front of the side-thrown thick wall. An incident surface B is provided on the side of the thick-wall light guide facing the light-emitting surface A, and an exit surface B is provided on the side of the thick-wall light guide away from the light-emitting surface A.

[0020] A further improvement lies in that: non-step patterns are provided on both the incident surface B and the exit surface B.

[0021] A further improvement lies in that: the arc-shaped protrusion presents one of a quadrilateral pattern, a hexagonal pattern, or a city wall brick pattern.

[0022] A further improvement lies in that: the side-thrown thick wall 1 is one of a side-thrown single-bend thick wall, a side-thrown multi-bend thick wall, or a side-thrown multi-bend thick wall.

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] After the light is incident from the condenser and collimated, the propagation path of the light is adjusted from the Z direction to the X direction through the reflecting surface. Then, the light passes through the non-step pattern, and the light is dimmed under the action of the non-step pattern and bent to the center. While meeting the regulations, the light distribution on the light-emitting surface is effectively optimized, the outer bright spot caused by the step is solved, and the visual effect of the thick wall is improved. Brief Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a structural diagram of the side-projecting thick wall in the present invention.

[0027] Figure 2 It is a structural diagram of the light cup in the present invention.

[0028] Figure 3 It is a structural diagram of the non-step pattern in the present invention.

[0029] Figure 4 It is a structural diagram of the arc protrusion in the present invention.

[0030] Figure 5 It is a structural diagram of the LED light source in the present invention.

[0031] Figure 6 It is a structural diagram of the combination of the side-projecting single thick wall and the thick wall light guide in the present invention.

[0032] Figure 7 It is a structural diagram of the side-projecting single-bent thick wall in the present invention.

[0033] Figure 8 It is a structural diagram of the combination of the side-projecting single-bent thick wall and the thick wall light guide in the present invention.

[0034] Figure 9 It is a structural diagram of the side-projecting double-bent thick wall in the present invention.

[0035] Figure 10 It is a structural diagram of the combination of the side-projecting double-bent thick wall and the thick wall light guide in the present invention.

[0036] Wherein: 1. Side-projecting thick wall; 11. Incident surface A; 12. Reflecting surface; 13. Light-emitting surface A; 14. Lower trim frame A; 15. Upper trim frame A;

[0037] 2. Non-step pattern; 21. Arc protrusion; 211. Starting angle line; 212. Terminating angle line;

[0038] 3. Condenser; 31. Reflector cup; 32. Cone

[0039] 4. LED light source

[0040] 5. Thick-walled light guide; 51. Incident surface B; 52. Light-emitting surface B; 53. Lower trim frame B; 54. Upper trim frame B Detailed implementation manners

[0041] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts shall fall within the scope of protection of the present application.

[0042] According to Figure 1 , 2 , as shown in FIGS. 3, 4, 5, 6, 7, 8, 9, 10, a stepless thick-walled optical structure for an automotive signal lamp is proposed in this embodiment, including:

[0043] Side-projecting thick wall 1, with an incident surface A11 provided at the top of the side-projecting thick wall 1, and a condenser 3 for calibrating light rays provided on the incident surface A11;

[0044] Reflecting surface 12, provided on one side of the side-projecting thick wall 1 and forming an angle C with the incident surface A11, and the reflecting surface 12 is placed below the condenser 3 for changing the incident angle of light rays;

[0045] Light-emitting surface A13, provided on the side of the side-projecting thick wall 1 away from the reflecting surface 12, and the light-emitting surface A13 is placed in front of the reflecting surface 12;

[0046] Stepless pattern 2, laid on the light-emitting surface A13 and the reflecting surface 12 for adjusting the light-emitting direction of the light-emitting surface A13 and converging the light rays towards the center.

[0047] After the light is incident from the condenser 3 and collimated, the propagation path of the light is adjusted from the Z direction to the X direction through the reflecting surface 12, and then the light passes through the stepless pattern 2. Under the action of the stepless pattern 2, the light is dimmed and bent to the center, meeting the regulations and effectively optimizing the light distribution on the light-emitting surface, solving the problem of the outer bright spot caused by the step, and improving the visual effect of the thick wall 1.

[0048] It should be noted that for the stepless pattern 2 on the reflecting surface 12, both its concave and convex structures are applicable.

[0049] It is worth elaborating that the stepped-less pattern 2 includes a plurality of arc-shaped protrusions 21, and the arc-shaped protrusions 21 are arranged in an array on the light-emitting surface A13. A starting angle line 211 and an ending angle line 212 are formed at the boundary of the arc-shaped protrusion 21. An included angle A is formed between the starting angle line 211 and the normal line of the light-emitting surface A13, and an included angle B is formed between the ending angle line 212 and the normal line of the light-emitting surface A13;

[0050] Among them, -90° ≤ included angle A ≤ 90°, -90° ≤ included angle B ≤ 90°.

[0051] Among them, the included angle A refers to the included angle between the starting angle line 211 and the normal line of the light-emitting surface A13. Changing the included angle A can change the orientation of one of the boundaries of the arc-shaped protrusion 21; the included angle B refers to the included angle between the ending angle line 212 and the normal line of the light-emitting surface A13. Changing the included angle B can change the orientation of the other boundary of the arc-shaped protrusion 21, so as to achieve the purpose of light bending.

[0052] Regarding the light adjustment method, please refer to the following description:

[0053] An LED light source 4 is provided on one side of the condenser 3. By changing the Conic parameter of the LED light source 4, the degree of light dispersion of the arc-shaped protrusion 21 is adjusted, and the Conic parameter has three adjustment methods;

[0054] Adjustment method 1: Set the Conic parameter to C1, 0 < C1 < 0.5; C1 is an ellipse mode, with the characteristic of an ellipse that "the light starting from the first focus will necessarily pass through the second focus". The pattern in this mode can distribute the energy more evenly.

[0055] Adjustment method 2: Set the Conic parameter to C2, 0.5 < C2 < 1; C2 is a hyperbola mode, with the characteristic of a hyperbola that "the light starting from the first focus will have its reverse extension line pass through the second focus after reflection". The pattern in this mode has a high energy utilization rate and is more friendly to regulations.

[0056] Adjustment method 3: Set the Conic parameter to C3, C3 = 0.5; C3 is a parabola mode, with the characteristic of a parabola that "the light emitted from the focus will be parallel to the axis after reflection". The pattern in this mode can take into account the above two characteristics.

[0057] The Conic curve used in this solution controls the light-emitting direction of the side-projecting thick wall 1 without steps through the starting angle line 211 and the ending angle line 212 of the arc bulge 21 boundary, and bends the light towards the center. The Conic curve parameters correspond to three modes: hyperbola, ellipse, and parabola. Compared with the traditional circular adjustment curve, it has a stronger ability to regulate the energy distribution and a higher ability to optimize the uniformity. By controlling the pattern dispersion through this non-circular adjustment method of regulating the Conic curve parameters, the energy distribution is made more reasonable, and uniform distribution of light rays in the upper viewing angle of 0° - 20° and the inner and outer viewing angles of -60° - 60° is achieved.

[0058] The included angle C is 45°.

[0059] The condenser 3 includes a light cup 31 and a cone 32. The light cup 31 is fixedly arranged on the incident surface A11, and the cone 32 is fixedly arranged at the center of the light cup 31. The light cup 31 and the cone 32 are integrally formed with the side-projecting thick wall 1. After the divergent light rays emitted by the LED light source 4 enter the light cup 31, the inner wall of the light cup 31 restricts the light ray direction through total reflection or specular reflection, reduces lateral scattering, and preliminarily collimates the light rays, so that the light rays propagate along the axis of the cone 32. When the light rays enter the cone 32 from the light cup 31, the conical surface curvature causes the light rays to refract. The light rays located at the bottom surface of the light cup 31 have a larger incident angle and are deflected towards the axis of the light cup 31 after refraction. The light rays near the cone apex have a smaller incident angle and a smaller deflection angle, and finally the divergent light rays are gradually converged towards the cone apex direction.

[0060] It is worth elaborating that the lower trim frame A14 and the upper trim frame A15 for fixing the side-projecting thick wall 1 are provided at the bottom and top of the side-projecting thick wall 1, and the side-projecting thick wall 1 is fixed to the external frame through the lower trim frame A14 and the upper trim frame A15.

[0061] In a relatively good implementation, the optical structure further includes a thick-wall light guide 5. The thick-wall light guide 5 is placed in front of the side-projecting thick wall 1. An incident surface B51 is provided on the side of the thick-wall light guide 5 facing the light-emitting surface A13, and an exit surface B52 is provided on the side of the thick-wall light guide 5 away from the light-emitting surface A13. The additional thick-wall light guide 5 in front of the side-projecting thick wall 1 can perform secondary optical modulation on the light rays scattered in the first layer, correct the uneven light rays, make the overall light pattern flatter, soften the boundary at the same time, reduce the sharp transition at the light ray edge, and reduce the eye fatigue.

[0062] It is worth elaborating that the lower trim frame B53 and the upper trim frame B54 for fixing the thick-wall light guide 5 are provided at the bottom and top of the thick-wall light guide 5, and the thick-wall light guide 5 is fixed to the external frame through the lower trim frame B53 and the upper trim frame B54.

[0063] In addition to setting the step-free pattern 2 on the light-emitting surface A13, step-free patterns 2 are also provided on the incident surface B51 and the exit surface B52.

[0064] In a preferred embodiment, the side-thrown thick wall 1 is one of a side-thrown single thick wall, a side-thrown single-bent thick wall, a side-thrown multi-bent thick wall, and a side-thrown multi-bent thick wall.

[0065] In addition to being used alone, the side-thrown thick wall 1 can also be used in combination with other thick wall components, etc. Its style can be adjusted according to actual needs, so as to form different form combinations. For example:

[0066] Side-thrown single thick wall (attached Figure 1 ), side-thrown single thick wall + thick wall / internal matching (attached Figure 6 ), side-thrown single-bent / double-bent / multi-bent thick wall (attached Figure 7 , 9 ), side-thrown single-bent / double-bent / multi-bent thick wall + thick wall (attached Figure 8 , 10 ). For the styles of the side-thrown single-bent thick wall and the side-thrown double-bent thick wall, please refer to the description in the attached drawings. The side-thrown multi-bent thick wall is incremented in turn on the basis of the side-thrown double-bent thick wall, and will not be elaborated here.

[0067] In a preferred embodiment, the arc protrusion 21 presents as one of a quadrilateral pattern, a hexagonal pattern, or a city wall brick pattern. In addition to the pattern styles exemplified above, other styles can be used for substitution, which will not be elaborated here. The overall optical structure is made of PC / PMMA material, and the color combination can be adjusted according to needs without limitation.

[0068] The working principle of this application:

[0069] Through the starting angle line 211 and the ending angle line 212 of the boundary of the arc protrusion 21, the light-emitting direction of the side-thrown thick wall 1 is controlled in the case of no steps, and the light is bent towards the center. The Conic curve parameters correspond to three modes: hyperbola, ellipse, and parabola:

[0070] Set the Conic parameter to C1 (0 < C1 < 0.5, ellipse mode), and use the optical characteristics of the ellipse to make the energy distribution more uniform;

[0071] Set the Conic parameter to C2 (0.5 < C2 < 1, hyperbola mode), and use the optical characteristics of the hyperbola to improve the energy utilization rate and comply with regulations;

[0072] Set the Conic parameter to C3 (C3 = 0.5, parabola mode), taking into account both uniformity and energy utilization rate.

[0073] By controlling the pattern dispersion through the non-circular adjustment method of regulating the Conic curve parameters, the uniform distribution of multi-viewpoint light is achieved.

[0074] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application 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. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "installed", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0075] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. An optical structure for an automotive signal lamp with a thick wall and no steps, characterized in that include: A side-projection thick wall (1), wherein an incident surface A (11) is provided on the top of the side-projection thick wall (1), and a condenser (3) for calibrating light is provided on the incident surface A (11); A reflecting surface (12) is arranged on one side of the side-projection thick wall (1) and forms an angle C with the incident surface A (11); the reflecting surface (12) is placed below the concentrator (3) and is used to change the incident angle of light; A light emitting surface A (13) is arranged on a side of the side projection thick wall (1) away from the reflecting surface (12), and the light emitting surface A (13) is placed in front of the reflecting surface (12); The step-free pattern (2) is laid on the light-emitting surface A (13) and the reflecting surface (12) and is used to adjust the light-emitting direction and converge the light toward the center.

2. The thick-wall optical structure without steps for an automotive signal lamp according to claim 1, wherein: The step-free pattern (2) comprises a plurality of circular arc protrusions (21), each of the circular arc protrusions (21) being arranged in an array on the light-emitting surface A (13), the boundaries of the circular arc protrusions (21) forming a starting angle line (211) and an ending angle line (212), the starting angle line (211) forming an angle A with a normal line of the light-emitting surface A (13), and the ending angle line (212) forming an angle B with the normal line of the light-emitting surface A (13); Among them, -90°≤angle A≤90°, -90°≤angle B≤90°.

3. The thick-walled optical structure of an automotive signal lamp without steps according to claim 2, characterized in that: An LED light source (4) is provided on one side of the condenser (3), and the degree of light dispersion of the arc protrusion (21) is adjusted by changing the Conic parameter of the LED light source (4), and the Conic parameter has three adjustment modes; Adjustment method 1: Set the Conic parameter to C1, 0<C1<0.5; Adjustment method 2: Set the Conic parameter to C2, 0.5<C2<1; Adjustment method three: setting the Conic parameter to C3, C3=0.

5.

4. A stepped-free thick-walled optical structure for an automotive signal lamp according to any one of claims 1, wherein: The angle C is 45°.

5. The thick-wall optical structure without steps for an automotive signal lamp according to claim 4, characterized in that: The concentrator (3) comprises a light cup (31) and a cone (32); the light cup (31) is fixedly arranged on the incident surface A (11); and the cone (32) is fixedly arranged at the center of the light cup (31).

6. The thick-walled optical structure without steps of an automotive signal lamp according to claim 1, characterized in that: The bottom and top of the side-projected thick wall (1) are provided with a lower decorative frame A (14) and an upper decorative frame A (15) for fixing the side-projected thick wall (1).

7. An optical structure of a non-step thick wall for an automotive signal lamp according to claim 1, characterized in that: It also includes a thick-walled light guide (5), which is placed on the front side of the side-projected thick wall (1), and is provided with an incident surface B (51) on the side of the thick-walled light guide (5) facing the light-emitting surface A (13), and is provided with a light-emitting surface B (52) on the side of the thick-walled light guide (5) away from the light-emitting surface A (13).

8. An optical structure of a thick-walled automotive signal lamp without steps according to claim 7, characterized in that: The incident surface B (51) and the light emitting surface B (52) are both provided with step-free patterns (2).

9. The thick-wall optical structure without steps for an automotive signal lamp according to claim 2, wherein: The arc protrusion (21) presents one of a quadrilateral pattern, a hexagonal pattern or a wall brick pattern.

10. An automotive signal lamp non-step thick-wall optical structure according to any one of claims 1-9, characterized in that: The side-cast thick wall (1) is one of a side-cast single-turn thick wall, a side-cast multiple-turn thick wall, and a side-cast multiple-turn thick wall.

Images