Light guide, atmosphere light assembly and vehicle

Abstract

The present invention relates to a light guide, an ambient light assembly, and a vehicle, comprising a first light guide bar and a second light guide bar, wherein the first light guide bar and the second light guide bar partially overlap but their center lines do not intersect; the second light guide bar has a plurality of reflective teeth arranged at intervals, and light emitted from the light guide after being reflected by the reflective teeth illuminates a portion of a predetermined illuminated surface and forms a reflected light region; light emitted from the light guide after passing through an intersection region illuminates a portion of a predetermined illuminated surface and forms an escaped light region; the overall average brightness of the escaped light region is equal to the average brightness of the adjacent reflected light regions. The light guide of the present invention can greatly reduce the light that escapes from the light guide after the total reflection condition is destroyed, thereby ensuring that the overall light output of the ambient light equipped with the light guide is uniform and free of optical defects such as bright spots.

Description

Technical Field

[0001] The present invention relates to the field of vehicle lamps, and in particular to a light guide, an atmosphere lamp assembly and a vehicle. Background Art

[0002] The appearance of car interior ambient lights first appeared in mid-to-high-end models. Today, they have been used more and more widely and are gradually becoming the new favorite in the automotive market, especially in the aftermarket for car modification. More and more young consumers can customize modifications according to their personalized needs.

[0003] According to the direction of light input, the ambient light of light guide strip can be generally divided into the middle light input type and the two end light input type.

[0004] The two-end light-input type refers to the entire light-emitting area as a reference, and the position of the RGB lamp head of the ambient light is set at both ends of the light-emitting area, that is, the light of the RGB lamp head of the ambient light actually enters from both ends of the light guide bar; the middle light-input type refers to the entire light-emitting area as a reference, and the position of the RGB lamp head of the ambient light is set in the middle of the light-emitting area. There are currently two main solutions:

[0005] One is a split cross-type light guide strip solution, that is, a solution with two cross-type light guide strips, such as the solution disclosed in patent CN114413204A. The difficulty of this solution is that the light uniformity in the cross-region is difficult to adjust. The structure of the ambient light in different models will be different. Therefore, each time a new structure is designed, it is necessary to adjust the light structure of the cross-region multiple times to perform software simulation. After the software simulation, physical sample testing is required, which is time-consuming and labor-intensive.

[0006] Second, as Figure 1 、 2 The combined cross-type light guide solution shown in the figure has the disadvantage that light will leak in the cross section. The main reason is that the light originally propagates in the light guide based on the total reflection characteristic of the light. The condition for total reflection is that the incident angle exceeds or equals the critical angle. Assume Figure 2 In the figure, there is no lower right light guide structure. At this time, the light shown in the figure is in critical total reflection. At this time, the incident angle α1 = critical angle, and the light can still be totally reflected. However, when the lower right light guide structure exists, the incident angle of the light changes from α1 to α2. It can be clearly seen from the figure that α2 < α1. Therefore, due to the decrease in the incident angle, the light will not be totally reflected but will be emitted from the light guide strip. In summary, Figure 1 、 2 The existence of the intersection destroys the conditions for total reflection of light in the intersection area, so most of the light will be emitted from the intersection to form a bright area, while the other parts of the light guide strip form a dark area because only a small amount of light is remaining to propagate and reflect. This solution still has major defects. Summary of the Invention

[0007] In order to avoid the shortcomings of Solution 2 in the background technology, the present invention provides a light guide with good overall light output uniformity and no optical defects such as bright spots.

[0008] The present invention proposes a light guide body, comprising a first light guide bar and a second light guide bar, wherein the first light guide bar and the second light guide bar partially overlap but their center lines do not intersect; the first light guide bar comprises a first light-incoming segment, a first curved transition segment, a first overlapping segment, a second curved transition segment, and a second light-incoming segment, which are smoothly transitioned in sequence; the second light guide bar comprises a first light-emitting segment, a second overlapping segment, and a second light-emitting segment, which are smoothly transitioned in sequence; the second overlapping segment of the second light guide bar partially overlaps with the first curved transition segment, the first overlapping segment, and the second curved transition segment of the first light guide bar, and the center line of the first overlapping segment is parallel to the center line of the second overlapping segment. The second light guide strip has a reflective portion extending along its length, and the reflective portion includes a plurality of reflective teeth arranged at intervals; the light emitted from the light guide body after being reflected by the reflective teeth illuminates a partial area of ​​a preset illuminated surface and forms a reflected light area; the light emitted from the light guide body after passing through the first curved transition segment and the second overlapping segment illuminates a partial area of ​​the preset illuminated surface and forms a first escaped light area, and the light emitted from the light guide body after passing through the second curved transition segment and the second overlapping segment illuminates a partial area of ​​the preset illuminated surface and forms a second escaped light area; the overall average brightness of the first escaped light area and the second escaped light area is equal to the average brightness of the adjacent reflected light areas.

[0009] Furthermore, the reflecting part also includes a first fill light tooth and a second fill light tooth, and the light irradiated on the first light escaping area also includes the light emitted from the light guide body after being reflected by the first fill light tooth, and the light irradiated on the second light escaping area also includes the light emitted from the light guide body after being reflected by the second fill light tooth.

[0010] Furthermore, the cross-sections of the first light guide strip and the second light guide strip are generally circular with radii R1 and R2 respectively; the centerline distance between the first overlapping segment and the second overlapping segment is L, and the value range of L is [1.4 (R1 + R2) / 2, 1.6 (R1 + R2) / 2].

[0011] Preferably, the radius of the first light guide strip and the second light guide strip is the same and L=1.5R1=1.5R2.

[0012] Preferably, the reflective portion is a ruled surface, and the conductive lines of the ruled surface change with the guidance of the center line of the second light guide strip.

[0013] Preferably, the reflective teeth are strip-shaped reflective teeth; the first fill-light teeth and the second fill-light teeth are point-shaped reflective teeth or strip-shaped reflective teeth.

[0014] Furthermore, two bifurcations between the first light guide strip and the second light guide strip have connecting ribs.

[0015] In one embodiment, the connecting rib is made of milky white or black material, and the connecting rib, the first light guide strip, and the second light guide strip are double-injection molded.

[0016] In another preferred embodiment, the connecting rib is a metal insert, and the connecting rib, the first light guide strip, and the second light guide strip are injection-molded metal inserts.

[0017] The present invention also proposes an atmosphere lamp assembly, which is applied to direct atmosphere lamps, including a shell, a lampshade and the light guide as described above. The light guide is fixed in the shell, and the lampshade includes a light-transmitting light-emitting segment, which is the preset illuminated surface.

[0018] The present invention also proposes an atmosphere lamp assembly, which is applied to an indirect atmosphere lamp and includes a housing, an illuminated panel and the light guide as described above. The light guide is fixed in the housing, and the illuminated panel has the preset illuminated surface.

[0019] The present invention also provides a vehicle comprising the above-mentioned ambient light assembly.

[0020] The beneficial effect of the present invention is that the light guide can greatly reduce the light escaping from the light guide after the total reflection condition is destroyed, so that the overall light output of the ambient light equipped with the light guide is uniform and free of optical defects such as bright spots. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of an integrated cross-type light guide strip solution in the prior art.

[0022] Figure 2 yes Figure 1 Schematic diagram of light leakage principle in the intersection area.

[0023] Figure 3 This is a schematic diagram of the light output effect of the integrated cross-light guide strip solution in the prior art.

[0024] Figure 4 Schematic diagram of the structure of the light guide body of this embodiment.

[0025] Figure 5 It is a structural diagram of the light guide in another direction of this embodiment.

[0026] Figure 6 It is an enlarged schematic diagram of the intersection of the light guide bodies in this embodiment.

[0027] Figure 7 Schematic diagram of the structure of the light guide body of this embodiment with the illuminated panel attached.

[0028] Figures 8-10These are the corresponding optical simulation effects for different L values.

[0029] The figure numbers are as follows: 100-first light guide strip; 110-first light input segment; 120-first curved transition segment; 130-first overlapping segment; 140-second curved transition segment; 150-second light input segment; 200-second light guide strip; 210-first light output segment; 220-second overlapping segment; 230-second light output segment; 240-reflecting part; 241-reflecting tooth; 242-first fill light tooth; 243-second fill light tooth; 250-connecting rib; 300-illuminated panel. Implementation Method

[0030] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] For example, see the attached Figure 4-9 A light guide comprises a first light guide bar 100 and a second light guide bar 200, wherein the first light guide bar 100 and the second light guide bar 200 partially overlap but their center lines do not intersect; the first light guide bar 100 comprises a first light-incoming segment 110, a first curved transition segment 120, a first overlapping segment 130, a second curved transition segment 140 and a second light-incoming segment 150 which are sequentially smoothly transitioned; the second light guide bar 200 comprises a first light-emitting segment 210, a second overlapping segment 220 and a second light-emitting segment 230 which are sequentially smoothly transitioned; the second overlapping segment 220 of the second light guide bar 200 partially overlaps with the first curved transition segment 120, the first overlapping segment 130 and the second curved transition segment 140 of the first light guide bar 100, the center line of the first overlapping segment 130 is parallel to the center line of the second overlapping segment 220, and the center line distance is 1 / 40 from the center line. The distance is L; the second light guide strip 200 has a reflective portion 240 extending along its length. The reflective portion 240 includes a plurality of reflective teeth 241 arranged at intervals. Light reflected by the reflective teeth 241 and emitted from the light guide illuminates a portion of the illuminated panel 300, forming a reflected light region. The structure and spacing of the reflective teeth 241 determine the average brightness and uniformity of the reflected light region. Light emitted from the light guide after passing through the first curved transition segment 120 and the second overlapping segment 220 illuminates a portion of the illuminated panel 300, forming a first escaped light region. Light emitted from the light guide after passing through the second curved transition segment 140 and the second overlapping segment 220 illuminates a portion of the illuminated panel 300, forming a second escaped light region. The overall average brightness of the first and second escaped light regions is equal to the average brightness of the adjacent reflected light regions. It should be noted that in the present invention, if the human eye cannot discern a brightness difference between two regions, the average brightness between the two regions can be considered equal.

[0032] The operating principle of the light guide of this embodiment is very simple. A lamp holder can be installed at each of the first light-inlet segment 110 and the second light-inlet segment 150. Light from the two lamp holders enters the light guide from the first light-inlet segment 110 and the second light-inlet segment 150, respectively. Taking the first light-inlet segment 110 as an example, when light passes through the first light-inlet segment 110 and then the first curved transition segment 120, most of the light propagates along the length direction of the first overlapping segment 130 and the second overlapping segment 220 by total internal reflection. The light propagating along the first overlapping segment 130 and the second overlapping segment 220 by total internal reflection is reflected by the reflective teeth 241 and then emitted from the light guide, forming a reflected light area. However, a small portion of light, because it does not meet the total internal reflection conditions, is emitted from the light guide, forming a first escaped light area. When the spacing of the reflective teeth 241 is arranged reasonably, the overall uniformity of the reflected light area is better; when the structure of the light guide makes the overall average brightness of the first and second light escaping areas equal to the average brightness of the adjacent reflected light areas, the overall light output of the light guide will be more uniform. Figure 1 The light guide of this embodiment can greatly reduce the light escaping from the light guide after the total reflection condition is destroyed, so that the overall light uniformity of the atmosphere lamp equipped with the light guide is good and there are no optical defects such as bright spots.

[0033] In a typical structural design, the cross-section of the light guide strip is generally circular. In fact, an elliptical, nearly circular, or other shape may also be used without significantly affecting the final light-emitting effect. In this embodiment, for ease of introduction and understanding, the cross-sections of the first light guide strip 100 and the second light guide strip 200 are generally circular, and the radii are R1 and R2, respectively.

[0034] In this embodiment, the main factors affecting the light emitting effect of the light guide body are the layout of the reflective teeth 241 and the size of the L value. Among them, the layout of the reflective teeth 241 determines the overall light emitting effect of the light guide body. After the overall structure and L value of the light guide body are determined, the average brightness and uniformity of the reflected light area can be changed by adjusting the spacing of the reflective teeth 241. The L value actually represents the degree of overlap between the first light guide strip 100 and the second light guide strip 200. When L=0, the structure of the light guide body is actually the attached Figure 1 In the structure shown in FIG, when L=2R, the first light guide strip 100 and the second light guide strip 200 in the light guide body are in a tangent state. In theory, it is impossible to make a physical object, so the theoretical value of L is 0. <L<2R。

[0035] The degree of overlap between the first light guide bar 100 and the second light guide bar 200 can actually be divided into two parts: one is the degree of overlap between the first curved transition segment 120 and the second curved transition segment 140 of the first light guide bar 100 and the second overlapping segment 220 of the second light guide bar 200, which directly affects the amount of light that escapes from the second light guide bar 200 without undergoing total reflection, i.e., the amount of escaped light, and ultimately affects the overall average brightness of the escaped light area of ​​the light guide body; the other is the degree of overlap between the first overlapping segment 130 of the first light guide bar 100 and the second overlapping segment 220 of the second light guide bar 200, which directly affects the proportion of light in the first light guide bar 100 that propagates into the second light guide bar 200, and ultimately affects the overall average brightness of the reflected light area of ​​the light guide body. In the optical simulation, when the L value changes to a small extent, it has little effect on the overall average brightness of the reflected light area. However, when the L value approaches 2R, the channel area (overlapping surface) between the first light guide strip 100 and the second light guide strip 200 decreases sharply, and the overall average brightness of the reflected light area of ​​the light guide body is significantly reduced.

[0036] From an optical design perspective, it is difficult to achieve an overall average brightness of an outgoing light region consisting solely of outgoing light, equal to the average brightness of an adjacent reflected light region. This is because the overall average brightness of the outgoing light region is effectively equivalent to the L value. As mentioned above, changes in the L value not only affect the overall average brightness of the outgoing light region, but also the average brightness of the reflected light region. Therefore, adjusting the L value during the design process requires numerous optical simulations, which is time-consuming and labor-intensive. Even if the optical simulations pass, the actual results differ from the simulations. If the average brightness between regions in the actual product is uneven, it will be difficult to modify the structure. To reduce design difficulty, in this embodiment, the reflective portion 240 further includes first filler teeth 242 and second filler teeth 243. Light reflected by the first filler teeth 242 and then exiting the light guide body illuminates the first outgoing light region, while light reflected by the second filler teeth 243 and then exiting the light guide body illuminates the second outgoing light region. By adding first and second fill-light teeth 242 and 243 to the reflective portion 240, the light in the first light-escape region includes light exiting the light guide after passing through the first curved transition segment 120 and the second overlapping segment 220, as well as light exiting the light guide after being reflected by the first fill-light teeth 242. The light in the second light-escape region includes light exiting the light guide after passing through the second curved transition segment 140 and the second overlapping segment 220, as well as light exiting the light guide after being reflected by the second fill-light teeth 243. Fill-light teeth can reduce the difficulty of optical design. Specifically, the optical design can be divided into steps. Initially, a simple adjustment of the L value is performed to make the average brightness of the light-escape region (before fill-light) slightly lower than the average brightness of the reflected light region. Subsequently, the structure of the first and second fill-light teeth 242 and 243 is simply added and adjusted to ensure that the average brightness of the light-escape region (after fill-light) equals the average brightness of the reflected light region.

[0037] In the actual research process, it was found that there is an optimal range of L values. The experimental relationship between L value and light output effect is shown in Table 1 below:

[0038] Experimental group R (mm) K(L / R) L(mm) Average value and evaluation of horizontal viewing angle simulated brightness Average value and evaluation of simulated brightness at human eye viewing angle 1 2.2 1.0625 2.3375 36.12cd / m2, with obvious bright spots visible at the fork 4.43cd / m2, narrow light pattern on both sides and too bright in the middle 2 2.2 1.125 2.475 36.25cd / m2, obvious bright spots can be seen at the fork 4.64cd / m2, narrow light pattern on both sides and too bright in the middle 3 2.2 1.1875 2.6125 36.33cd / m2, with obvious bright spots visible at the fork 4.68cd / m2, narrow light pattern on both sides and too bright in the middle 4 2.2 1.25 2.75 36.4cd / m2, with a small bright spot visible at the fork 4.57cd / m2, narrow light pattern on both sides and too bright in the middle 5 2.2 1.3125 2.8875 36.95cd / m2, with a small bright spot visible at the fork 4.52cd / m2, too bright in the middle 6 2.2 1.375 3.025 37.11cd / m2, with a small bright spot visible at the fork 4.45cd / m2, too bright in the middle 7-1 2.2 1.4375 3.1625 38.66cd / m2, no obvious visible problems 4.27cd / m2, slightly brighter in the middle 7-2 2.2 1.45 3.19 38.95cd / m2. No obvious visible problems 4.2cd / m2, slightly brighter in the middle 7-3 2.2 1.46 3.212 39.35cd / m2, no obvious visible problems 4.18cd / m2, slightly brighter in the middle 7-4 2.2 1.47 3.234 39.25cd / m2, no obvious visible problems 4.15cd / m2, no obvious visible problems 7-5 2.2 1.48 3.256 39.65cd / m2, no obvious visible problems 4.1cd / m2, no obvious visible problems 8 2.2 1.5 3.3 40.2cd / m2, no obvious visible problems 4.08cd / m2, no obvious visible problems 9-1 2.2 1.5625 3.4375 38.35cd / m2. No obvious visible problems 4.16cd / m2, no obvious visible problems 9-2 2.2 1.57 3.454 38.65cd / m2. No obvious visible problems 4.2cd / m2, no obvious visible problems 9-3 2.2 1.58 3.476 38.1cd / m2, no obvious visible problems 4.26cd / m2, the light edge transition is not smooth 10 2.2 1.625 3.575 37.52cd / m2, the light pattern is slightly narrow at the fork 4.37cd / m2, the light pattern is slightly narrow at the fork 11 2.2 1.6875 3.7125 35.86cd / m2, a small dark area can be seen at the fork 4.20cd / m2, obvious dark area can be seen at the fork 12 2.2 1.75 3.85 33.66cd / m2, a small dark area can be seen at the fork 4.14cd / m2, obvious dark area can be seen at the fork 13 2.2 1.8125 3.9875 32.45cd / m2, a large dark area can be seen at the fork 3.44cd / m2, a large dark area can be seen at the fork 14 2.2 1.875 4.125 31.12cd / m2, dark areas of faults can be seen at the fork. 3.14cd / m2, a large dark area can be seen at the fork 15 2.2 1.9375 4.2625 28.55cd / m2, dark areas of faults can be seen at the fork. 2.86cd / m2, a large dark area can be seen at the fork

[0039] Table 1: Comparison of optical simulation effects of combined light guides with different L values

[0040] Among them, when L=1.125R, L=1.5R, L=1.875R, the optical simulation effects are as follows: Figure 8 、 9 , as shown in 10.

[0041] Since the light guide in the optical simulation has the first light-filling teeth 242 and the second light-filling teeth 243, based on the experimental results and the influence of the light guide structure, the optimal value range of L is [1.4R, 1.6R]. Generally speaking, in the design stage, for the convenience of design, the radii of the first light guide bar 100 and the second light guide bar 200 are usually the same, that is, R1=R2. However, special cases where the radii are inconsistent due to installation, assembly or other reasons cannot be ruled out. If the radii are inconsistent, the optimal value range of L can be [1.4(R1+R2) / 2, 1.6(R1+R2) / 2].

[0042] In this embodiment, reflective portion 240 is a ruled surface. The lines of the ruled surface follow the centerline of the second light guide strip. This ruled surface facilitates the design of reflective teeth 241 and the machining of the corresponding structures on the mold during mold creation. Reflective teeth 241 are strip-shaped reflective teeth; the first and second fill-light teeth 242, 243 are either dot-shaped or strip-shaped.

[0043] Due to the unique structure of the light guide, stress concentration occurs at the bifurcation points between the first light guide bar 100 and the second light guide bar 200. This not only makes ejection difficult during the injection molding process, but also makes the strips susceptible to damage during transportation and installation due to stress concentration. To avoid these drawbacks, in this embodiment, the bifurcation points between the first light guide bar 100 and the second light guide bar 200 are provided with connecting ribs 250. These ribs 250 strengthen the structural strength of the bifurcation points while also facilitating ejection of the light guide strips from the mold during injection molding.

[0044] While the connecting ribs 250 improve the structural strength of the light guide, as previously discussed, adding them can actually have the undesirable effect of increasing light leakage. The larger the connecting ribs 250, the more severe the light leakage. To reduce or avoid this adverse effect, in this embodiment, the connecting ribs 250 can be made of a different material than the first and second light guide strips 100 and 200.

[0045] According to the principle of the generation of the escaped light, there are actually several ideas and solutions for the connecting rib 250 to reduce or avoid its adverse effects:

[0046] One is the light absorption principle, that is, the connecting rib 250 is made of black light-absorbing material, and the light passing through the connecting rib 250 is absorbed, so naturally no escape light is generated. However, light absorption is also a disadvantage, which will reduce the overall average brightness of the light emitted by the light guide.

[0047] The second principle is the astigmatism principle. The connecting rib 250 is made of a milky white, translucent material. Light passing through the connecting rib 250 is diffusely reflected. Most of the originally escaping light enters the first and second light guide strips 100, 200, and continues to propagate. Only a small portion escapes the light guide body, thus mitigating the adverse effects of the connecting rib 250 overall. This approach is preferred in this embodiment. The manufacturing processes for the light guide bodies of the first two approaches are similar, both employing a two-material injection molding process. That is, the connecting rib 250 is formed of two materials along with the first and second light guide strips 100, 200. The difference lies in the different color compositions of the connecting rib 250.

[0048] The third principle is the reflective principle. Connecting ribs 250 are made of highly reflective materials, such as copper, iron, aluminum, or alloys with a smooth surface finish. Light passing through connecting ribs 250 is reflected and propagated, similar to total internal reflection, without any escaped light. This light guide can be manufactured using a metal insert injection molding process, but the drawback is relatively high cost.

[0049] Although the present invention has been described with reference to preferred embodiments, it will be understood by those skilled in the art that it is not limited to the above embodiments and that various changes in form and details may be made within the scope of the claims.

Claims

1. A light guide, characterized in that: The first light guide bar and the second light guide bar are partially overlapped but their center lines do not intersect; The first light guide strip comprises a first light-incoming segment, a first curved transition segment, a first overlapping segment, a second curved transition segment and a second light-incoming segment which are smoothly transitioned in sequence; The second light guide strip comprises a first light emitting segment, a second overlapping segment and a second light emitting segment which are smoothly transitionally connected in sequence; The second overlapping segment of the second light guide strip partially overlaps with the first curved transition segment, the first overlapping segment, and the second curved transition segment of the first light guide strip, and the center line of the first overlapping segment is parallel to the center line of the second overlapping segment; The second light guide strip has a reflective portion extending along its length, and the reflective portion includes a plurality of reflective teeth arranged at intervals; Light emitted from the light guide after being reflected by the reflective teeth illuminates a portion of a predetermined illuminated surface and forms a reflected light region; light emitted from the light guide after passing through the first curved transition segment and the second overlapping segment illuminates a portion of a predetermined illuminated surface and forms a first escaped light region; and light emitted from the light guide after passing through the second curved transition segment and the second overlapping segment illuminates a portion of a predetermined illuminated surface and forms a second escaped light region; the overall average brightness of the first escaped light region and the second escaped light region is equal to the average brightness of the adjacent reflected light region; The cross-sections of the first light guide strip and the second light guide strip are generally circular with radii R1 and R2 respectively; the centerline distance between the first overlapping segment and the second overlapping segment is L, and the value range of L is [1.4 (R1 + R2) / 2, 1.6 (R1 + R2) / 2].

2. The light guide according to claim 1, wherein: The reflecting part also includes a first fill light tooth and a second fill light tooth. The light irradiated on the first light escaping area also includes the light emitted from the light guide body after being reflected by the first fill light tooth. The light irradiated on the second light escaping area also includes the light emitted from the light guide body after being reflected by the second fill light tooth.

3. The light guide according to claim 1, wherein: The radius of the first light guide bar and the second light guide bar are the same, and L=1.5R1=1.5R2.

4. The light guide according to claim 1, wherein: The reflecting portion is a ruled surface, and the conductive lines of the ruled surface change with the guidance of the center line of the second light guide strip.

5. The light guide according to claim 2, wherein: The reflective teeth are strip-shaped reflective teeth; the first fill-light teeth and the second fill-light teeth are point-shaped reflective teeth or strip-shaped reflective teeth.

6. The light guide according to claim 1, wherein: Two bifurcations of the first light guide bar and the second light guide bar are provided with connecting ribs.

7. The light guide according to claim 6, characterized in that: The connecting ribs are made of milky white or black material, and the connecting ribs, the first light guide strip and the second light guide strip are formed by double-material injection molding.

8. The light guide according to claim 6, wherein: The connecting ribs are metal inserts, and the connecting ribs, the first light guide strips, and the second light guide strips are injection-molded metal inserts.

9. An ambient light assembly, used for direct-type ambient light, characterized by: It comprises a shell, a lampshade and the light guide according to any one of claims 1 to 8, wherein the light guide is fixed in the shell, the lampshade comprises a light-transmitting light-emitting segment, and the light-emitting segment is the preset illuminated surface.

10. An ambient light assembly, used for indirect ambient light, characterized by: The light guide comprises a shell, an illuminated panel and the light guide according to any one of claims 1 to 8, wherein the light guide is fixed in the shell, and the illuminated panel has the preset illuminated surface.

11. A vehicle, characterized in that: Including the atmosphere light assembly as described in claim 9 or 10.

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