Light condensation structure and vehicle lamp

Abstract

The light gathering structure comprises a light gathering body, the light gathering body comprises a light gathering face, a side wall and a refraction inclined face, the light gathering face is located at one end of the side wall, the refraction inclined face is located at the other end of the side wall, and light emitted by a light source is refracted by the light gathering face to enter the light gathering body. Light emitted by the light source is collimated by the light condensing surface, the collimated light is first light, the first light is reflected by the side wall to become second light, the second light is refracted by the refraction inclined surface and is emitted out of the light condensing body, and the light, refracted by the refraction inclined surface, of the second light is emergent light. Compared with the prior art, the efficient and uniform condensation structure has the advantages that the utilization rate of light emitted by the light source is high, light loss caused by the light emitting angle of the light source is avoided, the light emitted by the efficient and uniform condensation structure is more uniform compared with the prior art, the dark space defect is avoided, and the overall irradiation effect is better.

Description

[Technical Field]

[0001] This utility model relates to the field of automotive lighting technology, and in particular to a high-efficiency uniform light-concentrating structure and vehicle lamp. [Background Technology]

[0002] There are two main types of existing thick-walled light-concentrating structures, namely as follows: Figure 1 and Figure 2 As shown, Figure 1 This is a cross-sectional view of a thick-walled light-concentrating structure in the prior art. Figure 2 This is a cross-sectional view of another thick-walled light-concentrating structure in the prior art. The light paths of these two schemes are as follows: Figure 3 and Figure 4 As shown, Figure 3 for Figure 1 The diagram shows the light path of the thick-walled light-concentrating structure. Figure 4 for Figure 2 The diagram shows the light trajectory of the thick-walled light-concentrating structure.

[0003] Figure 1 The light-concentrating structure shown mainly uses the refraction of light to make the originally divergent light rays collimated. Since the light-emitting angle of LEDs is generally 120°, while the angle that the light-concentrating structure can refract is about 42°, a lot of light will be lost and the light efficiency will be low. Figure 2 The light-concentrating structure shown is improved by adding a reflective sidewall. Figure 1 The light lost in the focusing structure shown is reflected, which improves its utilization efficiency. However, this scheme will create two dark areas on the irradiated surface, resulting in poor irradiation effect.

[0004] Therefore, it is necessary to propose a new technical solution to overcome the above problems. [Utility Model Content]

[0005] The purpose of this invention is to provide a high-efficiency and uniform light-concentrating structure and vehicle light, which not only has a high utilization rate of the light emitted by the light source and avoids light loss due to the light emission angle of the light source, but also the light emitted by the high-efficiency and uniform light-concentrating structure is more uniform than that of previous solutions, without dark area defects, and the overall illumination effect is better.

[0006] To achieve the purpose of the invention, according to one aspect of the present invention, a light-concentrating structure is provided, comprising a light-concentrating body, the light-concentrating body including a light-concentrating surface, a sidewall, and a refractive inclined surface. The light-concentrating surface is located at one end of the sidewall, and the refractive inclined surface is located at the other end of the sidewall. Light emitted from a light source is refracted by the light-concentrating surface and enters the light-concentrating body. The light-concentrating surface collimates the light emitted from the light source, and the collimated light is a first light ray. The first light ray is reflected by the sidewall and becomes a second light ray. The second light ray is refracted by the refractive inclined surface and exits the light-concentrating body, wherein the light ray refracted by the refractive inclined surface and exiting the light-concentrating body is an outgoing light ray.

[0007] According to another aspect of the present invention, the present invention provides a vehicle lamp that includes a focusing structure as described in the present invention.

[0008] Compared with the prior art, this utility model not only has a higher light utilization rate and avoids light loss due to the light emission angle of the light source, but also the light emitted by the efficient and uniform light-concentrating structure is more uniform than the previous solution, without dark area defects, and the overall illumination effect is better. [Attached Image Description]

[0009] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0010] Figure 1 This is a cross-sectional view of a thick-walled light-concentrating structure in the prior art;

[0011] Figure 2 This is a cross-sectional view of another thick-walled light-concentrating structure in the prior art;

[0012] Figure 3 for Figure 1 The diagram shows the light path of the thick-walled light-concentrating structure.

[0013] Figure 4 for Figure 2 The diagram shows the light path of the thick-walled light-concentrating structure.

[0014] Figure 5 This is a cross-sectional view of the efficient and uniform light-concentrating structure in one embodiment of the present invention;

[0015] Figure 6 As shown in one embodiment of the present invention Figure 5 The light path diagram of the efficient and uniform light-concentrating structure is shown.

[0016] Figure 7 As shown in one embodiment of the present invention Figure 5 The diagram shows the angular distribution of the highly efficient and uniform light-concentrating structure.

[0017] Figure 8 As shown in one embodiment of the present invention Figure 5 A schematic diagram showing the dimensions of the efficient and uniform light-concentrating structure.

[0018] Figure 9 This is a cross-sectional view of the efficient and uniform light-concentrating structure in another embodiment of the present invention;

[0019] Figure 10 As shown in one embodiment of the present invention Figure 9 The diagram shows the light trajectory of the highly efficient and uniform light-concentrating structure.

Detailed Implementation Methods

[0020] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] The term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. Unless otherwise specified, the terms coupling, connection, linking, and interconnection used herein to indicate electrical connection mean direct or indirect connection. For example, A being connected to B includes both a direct electrical connection between A and B and a connection between A and B via electrical components or circuits.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "back", "positive", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0023] Please refer to Figure 5 As shown, it is a cross-sectional view of the efficient and uniform light-concentrating structure in one embodiment of the present invention. Figure 5The light-concentrating structure shown includes a light-concentrating body 500 and a light source 600. The light-concentrating body 500 includes a light-concentrating surface 510, a sidewall 520, and a refractive inclined surface 530. The light-concentrating surface 510 is located at one end of the sidewall 520, and the refractive inclined surface 530 is located at the other end of the sidewall 520. The light source 600 is an LED light source.

[0024] Please refer to Figure 6 As shown, this is one embodiment of the present invention. Figure 5 The diagram shows the light path of the efficient and uniform focusing structure. The light emitted by the light source 600 is refracted by the focusing surface 510 and enters the focusing body 500. The focusing surface 510 collimates the light emitted by the light source 600, and the collimated light is the first light 710. The first light 710 is reflected by the side wall 520 and becomes the second light 720. The second light 720 is refracted by the refracting inclined surface 530 and exits the focusing body 500. The light 720 refracted by the refracting inclined surface 530 is the outgoing light 730.

[0025] exist Figure 5 and Figure 6 In the illustrated embodiment, the focusing body 500 has an axis L, the emitted light 730 is parallel to the axis L, and the sidewall 520 is parallel to the axis L. At any cross-section passing through the axis L, the emitted light 730 is divided into two parts by the axis L, with one side of each part of the emitted light adjacent to the axis L. The light source 600 is located at a predetermined position on one side of the focusing surface 510, and the light source 600 is located on the axis L. The conical main light-emitting area of ​​the light source 600 is located within the focusing surface 510.

[0026] exist Figure 5 and Figure 6 In the specific embodiment shown, the focusing surface 510 is symmetrical about the axis L, the sidewall 520 is symmetrical about the axis L, and the refractive inclined surface 530 is symmetrical about the axis L; the first ray 710 is symmetrical about the axis L, the second ray 720 is symmetrical about the axis L, and the emitted ray 730 is symmetrical about the axis L.

[0027] exist Figure 5 and Figure 6 In the specific embodiment shown, the sidewall 520 is the surface of a cylinder with axis L as its axis of symmetry; the focusing surface 510 is the surface of a first cone with axis L as its axis of symmetry; the refractive slope 530 is the surface of a second cone with axis L as its axis of symmetry; and the refractive slope 530 is a complete refractive slope.

[0028] exist Figure 6 In the specific embodiment shown, the first ray 710 is a parallel ray or a near-parallel ray; the second ray 720 is a parallel ray or a near-parallel ray; and the emitted ray 730 is a parallel ray or a near-parallel ray.

[0029] To facilitate understanding of this utility model, the following details are provided. Figure 6 The light trajectory of the efficient and uniform light-concentrating structure is shown.

[0030] like Figure 6 As shown, in any vertical cross section (or a cross section along the axis L), the light emitted by the light source 600 (e.g., LED) is first refracted by the focusing surface 510. At this time, the originally divergent light is refracted into two parts of parallel light (i.e., the first ray 710). However, these two parts of parallel light are not along the vertical direction (or the axis L), but at a certain angle to the vertical direction. In order to make its light output direction oriented towards the quasi-vertical direction, the light reaches the position of the refraction slope 530 after being reflected by the side wall 520. At this time, the refraction slope 530 refracts the originally parallel light (i.e., the second ray 720) at a certain angle to the vertical direction into light in the vertical direction (i.e., the outgoing ray 730). The outgoing ray 730 is formed by the two parts of parallel light (i.e., the first ray 710) after the aforementioned reflection and refraction. After the two parts of parallel light are emitted from the refraction slope 530, one side of each part is adjacent to the axis. In other words, the two parallel beams (i.e., the first beam 710) are reflected and refracted as described above, and then emitted from the refracting slope 530 close to the axis. At this time, the light-concentrating body 500 can utilize all the light emitted by the light source 600, and no dark area will be formed on the light-emitting surface (i.e., the refracting slope 530). This achieves efficient light-concentrating effect, and the emitted light is relatively uniform without dark areas.

[0031] The light emitted by the LED light source 600 is mainly (e.g., more than 90%) distributed in a conical main light-emitting area. When the LED is installed in the predetermined position, the diameter of the connection between the bottom focusing surface 510 and the vertical total reflection area can cover the entire conical main light-emitting area (or the conical main light-emitting area of ​​the light source 600 is located within the focusing surface 510).

[0032] The shape of the focusing surface 510 is designed to split the light rays incident on the LED onto the focusing surface 510 into two substantially parallel beams on any vertical cross-section (or a cross-section along the axis L). The focusing surface 510 can be a commonly used focusing surface in lighting fixtures, used to refract divergent light rays into parallel light rays. The shape of the focusing surface 510 can be derived from existing focusing surfaces (such as...) Figure 1 As shown) rotated by a certain angle and then symmetrically obtained (i.e. Figure 1 In the cross-section shown, the concentrating surface intersects with the cross-section to form a curve. The curve can be obtained by taking half of the curve to the left or right of the center point, rotating it around the center point in the plane of the cross-section by a certain angle, and then rotating it symmetrically around the axis. Alternatively, it can be obtained through numerical calculation.

[0033] Please refer to Figure 7 As shown, this is one embodiment of the present invention. Figure 5The diagram shows the angular distribution of the efficient and uniform light-concentrating structure. The angle between the first ray 710 and the sidewall 520 is α; the angle between the second ray 720 and the sidewall 520 is α; the angle between the second ray 720 and the normal to the refractive inclined surface 530 is β; the angle between the outgoing ray 730 and the normal to the refractive inclined surface 530 is γ. The refractive index of the light-concentrating body 500 material is n, therefore sinγ / sinβ=n, γ=α+β. From this, the tilt angle of the refractive inclined surface 540 can be designed.

[0034] Please refer to Figure 8 As shown, this is one embodiment of the present invention. Figure 5 The diagram shows the dimensions of the efficient and uniform light-concentrating structure. To ensure a more uniform irradiation effect, the width D and height H of the light-concentrating body 500 need to be designed. The angle between the first ray 710 and the side wall 520 is α; the angle between the second ray 720 and the side wall 520 is α; the length of the light-concentrating body 500 along the axis L is H; and the width of the light-concentrating body 500 perpendicular to the axis L is D. D and H must satisfy D / H = tanα. Only based on this corresponding relationship can the width D and height H achieve a uniform light irradiation effect.

[0035] Please refer to Figure 9 As shown, it is a cross-sectional view of the efficient and uniform light-concentrating structure in another embodiment of the present invention. Figure 9 and Figure 5 The cross-sectional diagrams of the high-efficiency, uniform light-concentrating structures shown are basically the same; the main difference lies in... Figure 9 The refracting slope 930 shown includes multiple parallel and spaced-apart annular refracting slopes 932, while Figure 5 The refracting slope 530 shown is a complete refracting slope.

[0036] exist Figure 9 In the specific embodiment shown, the refractive inclined surface 930 includes a plurality of parallel and spaced-apart refractive inclined surfaces 932, and the refractive inclined surface 930 also includes a connecting surface 934 disposed between two adjacent refractive inclined surfaces 932. The connecting surface 934 connects two adjacent refractive inclined surfaces 932 respectively, so that the refractive inclined surface 930 is arranged in a stepped shape (i.e., the refractive inclined surface 930 is a stepped surface). The method for calculating the tilt angle of the refractive inclined surface 932 is similar to... Figure 7 The angle calculation method shown is consistent.

[0037] Please refer to Figure 10 As shown, this is one embodiment of the present invention. Figure 9 The diagram shows the light trajectory of the efficient and uniform light-concentrating structure. The second light ray 720 is refracted by the inclined surface 932 of the refractor and exits the light-concentrating body 500; the connecting surface 934 is parallel to the axis L.

[0038] exist Figure 9 and Figure 10 In the specific embodiment shown, the focusing surface 510 is symmetrical about the axis L, the sidewall 520 is symmetrical about the axis L, and the refractive inclined surface 930 is symmetrical about the axis L; the first ray 710 is symmetrical about the axis L, the second ray 720 is symmetrical about the axis L, and the emitted ray 730 is symmetrical about the axis L.

[0039] It should be noted that the light source 600 can be an LED light source or other light sources. According to another aspect of this utility model, this utility model provides a vehicle lamp, which includes the highly efficient and uniform light-concentrating structure provided by this utility model as described above.

[0040] In summary, the high-efficiency uniform light-concentrating structure and vehicle lamp provided by this utility model not only have a high utilization rate of the light emitted by the light source and avoid light loss due to the light emission angle of the light source, but also the light emitted by the high-efficiency uniform light-concentrating structure is more uniform than that of previous solutions, without the appearance of dark areas, and the overall illumination effect is better.

[0041] It should be noted that any modifications made by those skilled in the art to the specific embodiments of this utility model do not depart from the scope of the claims of this utility model. Accordingly, the scope of the claims of this utility model is not limited to the foregoing specific embodiments.

Claims

1. A light-concentrating structure, characterized in that, It includes a focusing body, which comprises a focusing surface, a sidewall, and a refractive inclined surface. The focusing surface is located at one end of the sidewall, and the refractive inclined surface is located at the other end of the sidewall. The light emitted by the light source is refracted by the focusing surface and enters the focusing body. The focusing surface collimates the light emitted by the light source. The collimated light is the first light. The first light is reflected by the side wall and becomes the second light. The second light is refracted by the refracting inclined surface and exits the focusing body. The light that is refracted by the refracting inclined surface is the outgoing light.

2. The light-concentrating structure according to claim 1, characterized in that, The light-concentrating body has an axis. The emitted light ray is parallel to the axis; The sidewall is parallel to the axis. At any cross section passing through the axis, the emitted ray is divided into two parts by the axis, and one side of each part of the emitted ray is adjacent to the axis.

3. The light-concentrating structure according to claim 2, characterized in that, It also includes a light source, The light source is located at a predetermined position on one side of the focusing surface, and the light source is located on the axis; The cone-shaped main light-emitting area of ​​the light source is located within the focusing surface.

4. The light-concentrating structure according to claim 2, characterized in that, The sidewall is the surface of a column with the axis of symmetry as its axis; The light-concentrating surface is the surface of a first cone with the axis of symmetry as the axis of symmetry; The refractive inclined plane is the surface of a second cone with the axis of symmetry as its axis.

5. The light-concentrating structure according to claim 1, characterized in that, The first ray is a parallel ray or a nearly parallel ray; The second ray is a parallel ray or a nearly parallel ray; The emitted light rays are parallel or nearly parallel.

6. The light-concentrating structure according to claim 2, characterized in that, The refractive inclined plane comprises a plurality of parallel and spaced-apart refractive inclines; or, The refractive inclined plane is a complete refractive inclined plane.

7. The light-concentrating structure according to claim 2, characterized in that, The angle between the first ray and the sidewall is α; The angle between the second ray and the sidewall is α; The angle between the second ray and the normal to the refracting slope is β; The angle between the outgoing ray and the normal of the refracting slope is γ; If the refractive index of the light-concentrating body material is n, then sinγ / sinβ=n, γ=α+β.

8. The light-concentrating structure according to claim 2, characterized in that, The angle between the first ray and the sidewall is α; The angle between the second ray and the sidewall is α; The length of the light-concentrating body along the axis is H, and the width of the light-concentrating body perpendicular to the axis is D. Then D and H must satisfy D / H=tanα.

9. The light-concentrating structure according to claim 2, characterized in that, The refractive inclined plane includes multiple parallel and spaced-apart refractive sub-inclined planes. The refractive inclined surface also includes a connecting surface disposed between two adjacent refractive inclined surfaces, the connecting surface connecting the two adjacent refractive inclined surfaces respectively, so that the refractive inclined surface is arranged in a stepped shape; The second ray is refracted by the inclined surface of the refractor and exits the focusing body.

10. The light-concentrating structure according to claim 9, characterized in that, The connecting surface is parallel to the axis.

11. The light-concentrating structure according to any one of claims 1-10, characterized in that, The light source is an LED light source.

12. A vehicle light, characterized in that, It includes the light-concentrating structure as described in any one of claims 1-11.

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