LED large-spacing thick-wall part and vehicle lamp
Through the multiple total reflection design of LED large-pitch thick-walled parts, the problem of the large number of LEDs in existing car lights is solved, and efficient and uniform light emission is achieved, reducing cost and heat risks.
Patent Information
- Application Number
- CN202422294733.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The large number of LEDs used in existing car light designs leads to high costs, complex circuits and increased heat risk, making it difficult to achieve efficient and uniform light emission.
The LED large-pitch thick-walled parts structure is adopted, and through multiple total reflection design, including the total reflection surface and light-concentrating groove of the upper and lower parts, the parabolic reflective surface is used to improve the light efficiency, reduce the number of LEDs, and design and simplify the circuit.
Improves light efficiency, reduces LED raw material costs, simplifies circuit design, reduces heat risk, and achieves a uniform light exit effect.
Smart Images
Figure CN223076791U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automotive lighting, in particular to an LED large-spacing thick-walled part and a vehicle lamp. Background Art
[0002] With the rapid development of automotive lamp technology and the increasing pursuit of consumers for the lighting effect of vehicle lamps, production cost and efficiency are also problems that need to be solved urgently by each vehicle lamp supplier. In the existing scheme, after the light is emitted from the LED, it passes through a series of acting devices and then exits from the light-emitting surface to achieve a more uniform lighting effect of the vehicle lamp.
[0003] In traditional projects, the known schemes are not efficient because a large number of LEDs are required, which not only increases the cost of LED raw materials but also causes complex circuit design and increased heat risk. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is to overcome the deficiencies in the prior art and provide an LED large-spacing thick-walled part and a vehicle lamp. The LED large-spacing thick-walled part in the utility model emits light through multiple total internal reflections in the system, saves LEDs, has a wider light-emitting area than the traditional form, reduces costs, has uniform and efficient lighting, is visually transparent and has universality.
[0005] The technical solution adopted by the utility model to solve its technical problem is:
[0006] An LED large-spacing thick-walled part includes an upper part and a lower part which are integrally formed and connected up and down, and a plurality of parallel total reflection units are correspondingly arranged on the upper part and the lower part;
[0007] The total reflection unit includes a light incident surface, a light exit surface, a first total reflection surface, a second total reflection surface and a light condensing groove. The light incident surface and the first total reflection surface are respectively located at both ends of the upper part, the light exit surface and the second total reflection surface are respectively located at both ends of the lower part, the first total reflection surface and the second total reflection surface are connected to form an intersection line, the light condensing grooves are distributed at the light incident surface, and a light source is provided directly in front of the light condensing grooves;
[0008] The first total reflection surface is inclined downward, the second total reflection surface is inclined upward, and the first total reflection surface and the second total reflection surface are symmetrically arranged with respect to the connection surface of the upper part and the lower part.
[0009] The light source is an LED light source, and the color is not limited. It can be monochromatic red, white, yellow or a combination of two of them, etc.
[0010] Further, the intersection line is a parabolic curve.
[0011] Further, the first total reflection surface is connected to the upper component to form a parabolic first curve, and the second total reflection surface is connected to the lower component to form a parabolic second curve.
[0012] Further, the light-concentrating groove is an open groove, and the opening of the light-concentrating groove is arranged towards the light source; the light-concentrating groove is a groove formed after removing a solid object, and the solid object is one of a spherical body, an ellipsoidal body, a Fresnel body, and a solid object with large ends and a small middle.
[0013] Further, the first total reflection surface forms an angle α with the incident light, and α is 40 to 50°.
[0014] Further, the second total reflection surface forms an angle β with the outgoing light, and β is 40 to 50°.
[0015] Further, the first total reflection surface and the second total reflection surface form an angle γ, and γ is 80 to 100°.
[0016] Further, the light-emitting surface is provided with a light distribution pattern.
[0017] Further, the first total reflection surface and / or the second total reflection surface is provided with a light distribution pattern.
[0018] The material of the LED large-spacing thick-wall component is a transparent material PMMA or PC.
[0019] A vehicle lamp includes the above-mentioned LED large-spacing thick-wall component.
[0020] The beneficial effects of the present utility model are as follows: The structure of the present utility model is simple and reasonably designed, and has the following advantages:
[0021] (1) The light emitted by the LED light source enters the thick-wall component through the light-incident surface, and after two total reflections by the first total reflection surface and the second total reflection surface, it exits from the light-emitting surface of the thick-wall component, reasonably utilizing the light effect and having high efficiency;
[0022] (2) The first curve, the intersection line, and the second curve are respectively parabolic, which can increase the light-emitting area and save the design quantity of the LED light source;
[0023] (3) The spacing of the LED light sources is greater than or equal to 20 mm. Therefore, for the same light-emitting width, the present utility model can save the quantity of LED light sources, reduce the cost of LED raw materials, simplify the complexity of the circuit design, and reduce the heat risk;
[0024] (4) It has uniform lighting and is beautiful. Description of the Drawings
[0025] To more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.
[0026] Figure 1 is the perspective view of the present utility model;
[0027] Figure 2 is the front view of the present utility model;
[0028] Figure 3 is Figure 2 the rear view of
[0029] Figure 4 is Figure 2 the top view of
[0030] Figure 5 is Figure 2 the bottom view of
[0031] Figure 6 is Figure 2 the right side view of
[0032] Figure 7 is the optical path diagram of the present utility model;
[0033] Figure 8 is the optical path diagram of the present utility model from another perspective;
[0034] Figure 9 is the optical path diagram of the thick-walled part in the prior art.
[0035] In the figure: 1. upper component, 2. lower component, 3. light incident surface, 4. light exit surface, 5. first total reflection surface, 6. second total reflection surface, 7. light concentrating groove, 8. intersection line, 9. connecting surface, 10. first curve, 11. second curve. Specific Embodiments
[0036] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.
[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form also includes the plural form. In addition, it should also be understood that when the terms "comprising" and / or "including" are used in this specification, they specify the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0038] The technical solution of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0039] As Figures 1 to 6 shown, an LED large pitch thick wall part includes an upper part 1 and a lower part 2 that are integrally formed and connected up and down. The upper part 1 and the lower part 2 are respectively provided with a number of parallel total reflection units; the total reflection unit includes a light incident surface 3, a light exit surface 4, a first total reflection surface 5, a second total reflection surface 6, and a light condensing groove 7. The light incident surface 3 and the first total reflection surface 5 are respectively located at both ends of the upper part 1, the light exit surface 4 and the second total reflection surface 6 are respectively located at both ends of the lower part 2. The first total reflection surface 5 and the second total reflection surface 6 are connected to form an intersection line 8. The light condensing grooves 7 are distributed at the light incident surface 3, and a light source is provided directly in front of the light condensing grooves 7; the first total reflection surface 5 is inclined downward, the second total reflection surface 6 is inclined upward, and the first total reflection surface 5 and the second total reflection surface 6 are symmetrically arranged with respect to the connection surface 9 of the upper part 1 and the lower part 2. The light source is an LED light source.
[0040] The intersection line 8 is a parabolic curve. The first total reflection surface 5 and the upper part 1 are connected to form a parabolic first curve 10, and the second total reflection surface 6 and the lower part 2 are connected to form a parabolic second curve 11. According to the parabola principle, the light emitted from the focus, after passing through the parabola, is emitted parallel. Therefore, the first curve 10, the intersection line 8, and the second curve 11 are all parabolic, which can increase the light exit area and save the design quantity of the LED light source.
[0041] The light condensing groove 7 is an open groove, and the opening of the light condensing groove 7 faces the light source; the light condensing groove 7 is a groove formed after removing a solid object, and the solid object is a solid object with a large middle and small ends.
[0042] The first total reflection surface 5 forms an angle α with the incident light, and α is 45°; the second total reflection surface 6 forms an angle β with the emitted light, and β is 45°; the first total reflection surface 5 and the second total reflection surface 6 form an angle γ, and γ is 90°.
[0043] The light-emitting surface 4 is provided with a light distribution pattern for corn kernels, and the first total reflection surface 5 and the second total reflection surface 6 are provided with light distribution patterns.
[0044] The material of the LED large pitch thick-walled part is a transparent material PMMA.
[0045] A vehicle lamp includes the above-mentioned LED large pitch thick-walled part.
[0046] As Figure 7 and Figure 8 shown, the light source is an LED light source, and the light emitted enters the thick-walled part through the light incident surface 3. First, it is refracted by the light condensing groove 7, and then passes through the first total reflection surface 5 and the second total reflection surface 6 to form collimated parallel light rays, which are emitted from the light-emitting surface 4.
[0047] Figure 9 Figure Figure 9 is the optical path diagram of the thick-walled part in the prior art. In the existing structure, the spacing of the LED light sources is about 10 mm. In the present invention, the spacing of the LED light sources is greater than or equal to 20 mm. Therefore, for the same light-emitting width, the present invention can save the number of LED light sources.
[0048] In summary, this kind of LED large pitch thick-walled part has a simple structure and reasonable design, and has the following advantages:
[0049] (1). The light emitted by the LED light source enters the thick-walled part through the light incident surface 3, and after two total reflections on the first total reflection surface 5 and the second total reflection surface 6, it is emitted from the light-emitting surface 4 of the thick-walled part, reasonably utilizing the light efficiency and having high efficiency;
[0050] (2). The first curve 10, the intersecting line 8, and the second curve 11 are respectively parabolic, which can increase the light-emitting area and save the designed number of LED light sources;
[0051] (3). The spacing of the LED light sources is greater than or equal to 20 mm. Therefore, for the same light-emitting width, the present invention can save the number of LED light sources, reduce the cost of LED raw materials, and at the same time can simplify the complex circuit design and reduce the heat risk;
[0052] (4). It has uniform lighting and is beautiful.
[0053] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. An LED large pitch thick-walled part, characterized in that: It includes an upper part (1) and a lower part (2) which are integrally formed and connected up and down, and a number of parallel total reflection units are correspondingly provided on the upper part (1) and the lower part (2); The total reflection unit includes a light incident surface (3), a light exit surface (4), a first total reflection surface (5), a second total reflection surface (6) and a light condensing groove (7). The light incident surface (3) and the first total reflection surface (5) are respectively located at both ends of the upper part (1), the light exit surface (4) and the second total reflection surface (6) are respectively located at both ends of the lower part (2). The first total reflection surface (5) and the second total reflection surface (6) are joined to form an intersection line (8). The light condensing grooves (7) are distributed at the light incident surface (3), and a light source is provided directly in front of the light condensing grooves (7); The first total reflection surface (5) is inclined downward, the second total reflection surface (6) is inclined upward, and the first total reflection surface (5) and the second total reflection surface (6) are symmetrically arranged with respect to the connection surface (9) of the upper part (1) and the lower part (2).
2. The large-spacing thick-wall part of an LED according to claim 1, characterized in that: The intersection line (8) is a parabolic curve.
3. The large-spacing thick-walled part of an LED according to claim 2, characterized in that: The first total reflection surface (5) is joined to the upper part (1) to form a parabolic first curve (10), and the second total reflection surface (6) is joined to the lower part (2) to form a parabolic second curve (11).
4. The large-spacing thick-wall part of an LED according to claim 1, characterized in that: The light condensing groove (7) is an open groove, and the opening of the light condensing groove (7) faces the light source; the light condensing groove (7) is a groove formed after removing a solid object, and the solid object is one of a spherical body, an ellipsoidal body, a Fresnel body, and a solid object with large ends and a small middle part.
5. An LED large-spacing thick-walled part according to claim 1, characterized in that: The first total reflection surface (5) forms an angle α with the incident light, and α is 40 to 50°.
6. The large-spacing thick-wall part of an LED according to claim 1, wherein: The second total reflection surface (6) forms an angle β with the outgoing light, and β is 40 to 50°.
7. An LED large-spacing thick-walled part according to claim 1, characterized in that: The first total reflection surface (5) and the second total reflection surface (6) form an angle γ, and γ is 80 to 100°.
8. The large-spacing thick-wall part of an LED according to claim 1, wherein: The light exit surface (4) is provided with a light distribution pattern.
9. The large-spacing thick-walled part of an LED according to claim 1, characterized in that: The first total reflection surface (5) and / or the second total reflection surface (6) is provided with a light distribution pattern.
10. A vehicle lamp, characterized in that: It includes the led large-spacing thick-wall part according to any one of claims 1 to 9.