Atmosphere lamp assembly and vehicle

Abstract

This invention relates to an ambient lighting assembly and a vehicle, comprising a bracket, a lamp head module, an optical fiber bundle, a light guide strip, and a lamp cover. The lamp cover has a light-transmitting portion with a preset area. The light guide strip includes a light-incident end face and reflective teeth. The reflective teeth are distributed along the length of the light guide strip and reflect light towards the light-transmitting portion. The optical fiber bundle is formed by a bundle of several optical fibers, and the first light-emitting portion of the optical fiber bundle is a light-emitting end face formed by the convergence of the light-emitting ends of at least some of the optical fibers. The lamp head module is located at one end of the lamp cover, and the light-emitting portion of the lamp head module is close to the light-incident portion of the optical fiber bundle, while the first light-emitting portion of the optical fiber bundle is close to the light-incident end face of the light guide strip. The beneficial effects of this invention are that by replacing the curved portion of the original light guide strip with several finer optical fibers, the size of the black border of the ambient light's light-transmitting portion can be reduced under the same light loss, or the light loss of the ambient light can be reduced under the same black border size, thereby improving the light utilization rate. At the same time, the lamp head module's position is more flexible, and the requirements for installation space are lower.

Description

Technical Field

[0001] This invention relates to the field of vehicle lighting, specifically to an ambient lighting assembly and a vehicle. Background Technology

[0002] Ambient lighting in car interiors first appeared in mid-to-high-end models, but now it is being used more and more widely and is gradually being extended to ordinary models. Among them, linear ambient lighting is a relatively mainstream configuration. The lighting effect at night is very cool and fits the aesthetic needs of some consumers. They are also more willing to pay a premium for models with this kind of ambient lighting.

[0003] Linear ambient lights typically use a light guide structure for light emission. Ambient lights with a light guide structure can be categorized by the direction of light intake (or the position of the light head) into two types: those with light intake at both ends and those with light intake in the middle.

[0004] The "two-end light-intake" type refers to a ambient light where the lamp heads are positioned at both ends of the light-emitting area, with the overall light-emitting area of ​​the ambient light serving as a reference. In other words, the light from the two lamp heads actually enters from both ends of a single light guide strip. This type of light guide strip has a simple structure, but its drawback is that the lamp heads can only be placed at both ends of the light guide strip, thus limiting the installation space for the lamp heads. Secondly, because the light guide strip requires a certain turning radius, the ends of the ambient light have a relatively long non-light-emitting area, i.e., a black border, resulting in a relatively poor overall ambient lighting effect on the vehicle.

[0005] Center-light-intake type refers to ambient lighting where the lamp head is positioned in the middle of the light-emitting area, with the entire light-emitting area as a reference. This means that the two light guides are intersected, and the light from each lamp head enters one of the light guides. While this type of light guide can avoid black edges and has a good visual effect, its drawbacks are that, because the lamp head is positioned in the middle of the light guide, it requires a certain amount of installation space in the vehicle, and some models do not have enough or extra installation space for the lamp head. Secondly, the light emitted from the intersection of the two light guides is prone to bright spots or dark areas, requiring high technical expertise. Summary of the Invention

[0006] To avoid the shortcomings of the prior art, the present invention provides an ambient light assembly, which is a light guide strip ambient light with light entering from both ends, and the installation position of the lamp head module is more flexible and has less black edge.

[0007] This invention proposes an ambient light assembly, comprising a bracket, a lamp head module, an optical fiber bundle, a light guide strip, and a lampshade. The bracket and lampshade cooperate to form a cavity that can accommodate the light guide strip. The lampshade has a light-transmitting portion in a predetermined area, the length of which is greater than or equal to the length of the light-emitting portion on the light guide strip. The light guide strip includes an incident end face and reflective teeth. The reflective teeth are distributed along the length direction of the light guide strip and are used to reflect light propagating inside the light guide strip toward the light-transmitting portion. The optical fiber bundle is formed by a bundle of several optical fibers, and the optical fiber bundle includes an incident light portion and a first light-emitting portion. The first light-emitting portion is an incident light end face formed by the convergence of the light-emitting ends of at least a portion of the optical fibers. The lamp head module is located at one end of the lampshade, with the light-emitting portion of the lamp head module close to the incident light portion of the optical fiber bundle, and the first light-emitting portion of the optical fiber bundle close to the incident light end face of the light guide strip.

[0008] Furthermore, the optical fiber bundle also includes a second light-emitting section; the light-transmitting section includes a first light-transmitting area and a second light-transmitting area adjacent to each other; the light emitted from the first light-emitting section can be reflected by the reflective teeth after entering the light guide strip and emitted from the first light-transmitting area, and the light emitted from the second light-emitting section can be emitted directly or indirectly from the second light-transmitting area.

[0009] Preferably, the second light-emitting section is a light-emitting end face formed by the convergence of the light-emitting ends of the remaining light-guiding fibers. The light emitted from the second light-emitting section can be diffusely reflected from the inner wall of the support and emitted from the second light-transmitting area.

[0010] Another preferred embodiment is that the second light-emitting part is a light-emitting side formed by the convergence of the light-transmitting sides at the preset positions of the remaining light-guiding fibers. The light-emitting side is formed by special processing of the normal side to destroy the internal total internal reflection conditions.

[0011] Furthermore, the fiber bundle also includes an outer sheath and a fixing component. The outer sheath is fitted around the outer ring of the fiber bundle, and the fixing component is fixedly fitted at the end of the fiber bundle.

[0012] Furthermore, the bracket also includes a positioning part, which is used to cooperate with the fixing element and fix the end of the fiber bundle.

[0013] Furthermore, the cross-sectional area of ​​the light-emitting part of the lamp head module is smaller than the cross-sectional area of ​​the light-inlet part of the optical fiber bundle, and the cross-sectional area of ​​the light-inlet end face of the light guide strip is smaller than the cross-sectional area of ​​the first light-emitting part of the optical fiber bundle.

[0014] The present invention also proposes a vehicle including the ambient lighting assembly described above.

[0015] The beneficial effects of this invention are that it replaces the curved part of the original light guide strip with several finer light guide fibers, which can reduce the black border size of the light-transmitting part of the ambient light under the same light loss, or reduce the light loss of the ambient light under the same black border size, thereby improving the light utilization rate. At the same time, the lamp head module position is more flexible and the requirements for installation space are lower. Attached Figure Description

[0016] Figure 1 This is an overall schematic diagram of the ambient light assembly in Example 1.

[0017] Figure 2 This is a schematic diagram of the internal structure of the ambient light assembly in Example 1.

[0018] Figure 3 yes Figure 2 An enlarged schematic diagram.

[0019] Figure 4 yes Figure 3 A magnified view of a portion of the image.

[0020] Figure 5 This is a partial overall structural diagram of the ambient light assembly in Example 2.

[0021] Figure 6 This is a partial internal structural diagram of the ambient light assembly in Example 2.

[0022] The reference numerals in the attached figures are as follows: 100-bracket; 110-positioning part; 200-lamp cover; 211-first light-transmitting area; 212-second light-transmitting area; 300-lamp head module; 400-fiber bundle; 410-light inlet part; 420-first light outlet part; 430-second light outlet part; 440-outer sheath; 450-fixing component; 460-light guide fiber; 500-light guide strip; 510-light inlet end face. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0024] Example 1, referring to Figures 1-4An ambient lighting assembly, applicable to vehicle interiors, includes a bracket 100, a lamp head module 300, an optical fiber bundle 400, a light guide strip 500, and a lamp cover 200. The bracket 100 and the lamp cover 200 cooperate to form a cavity that can accommodate the light guide strip 500. The lamp cover 200 has a light-transmitting portion with a preset linear region. The length of the light-transmitting portion is greater than or equal to the length of the light-emitting region on the light guide strip 500. The lamp cover 200 can be made of milky white plastic, which is light-transmitting and has a light-uniforming effect. The light guide strip 500 includes a light-incident end face 510 and reflective teeth. The reflective teeth are distributed along the length direction of the light guide strip 500 to reflect light from the interior of the light guide strip 500. The propagated light is reflected towards the light-transmitting part; the optical fiber bundle 400 is formed by a bundle of several optical guide fibers 460, and the optical fiber bundle 400 includes a light-inlet part 410 and a first light-outlet part 420, wherein the light-inlet part 410 is a light-inlet end face formed by the convergence of the light-inlet ends of each optical guide fiber 460, and the first light-outlet part 420 is a light-outlet end face formed by the convergence of the light-outlet ends of each optical guide fiber 460; the lamp head module 300 is located at one end of the lamp cover 200, the light-outlet part of the lamp head module 300 is close to the light-inlet part 410 of the optical fiber bundle 400, and the first light-outlet part 420 of the optical fiber bundle 400 is close to the light-inlet end face 510 of the light guide strip 500.

[0025] It's important to understand that in this invention, when the light-transmitting portion of the lampshade 200 is theoretically maximized, the area where the light-transmitting portion cannot emit light due to structural limitations is called a black border. Analogous to the screen-to-body ratio of a monitor, since a 100% screen-to-body ratio cannot be achieved due to structural limitations, black borders exist on the top, bottom, left, and right sides of the screen.

[0026] The core principle of this embodiment is to replace the curved portion of the original light guide strip 500 with several finer light guide fibers 460. Generally, when the turning radius R of the wire is greater than 10 times the wire diameter d, i.e., R>10d, the light propagating inside the wire can meet the condition of total internal reflection and will not leak light. To meet the technical specifications, the diameter d1 of the light guide strip 500 is generally 4-5mm. Therefore, the turning radius R1 of the curved portion of the light guide strip 500 needs to be greater than 40mm to prevent light leakage. However, if a turning radius of 40mm is actually achieved, the black edge will be very large. Therefore, in actual structural design, the turning radius is reduced, and the black edge size is reduced at the cost of increasing light loss. The greater the light loss, the smaller the black edge. Usually, a balance is sought between light loss and black edge. In addition, if other components are set at the edge of the vehicle installation space, such as Figure 1 The dashed box on the right side of the image indicates that if the ambient light has the existing structure, the lamp head module 300 needs to be moved further inward, which will cause the black border to become larger.

[0027] The diameter d2 of a single optical fiber 460 is generally only 0.25mm. Therefore, the turning radius R2 of the fiber bundle 400 only needs to be greater than 2.5mm to prevent light leakage. Thus, even considering the optional fixing part 450 on the fiber bundle 400, after replacing the bending part of the rear light guide strip 500 with the fiber bundle 400, the ambient light has a smaller black border size under the same light loss; or under the same black border size, the ambient light can reduce light loss and achieve higher light utilization. Meanwhile, due to the use of the fiber bundle 400, the lamp head module 300 is not limited to being located at the edge of the light-transmitting part of the lamp cover 200. It can be placed further inward without increasing the black edge. Furthermore, since the installation of the lamp head module 300 is no longer constrained by the light guide strip structure, the installation position, orientation, and distance of the lamp head module 300 can be set more flexibly, and the lamp head module 300 has lower requirements for installation space. For example, if there is no installation space near the light guide strip 500 for the lamp head module 300, the lamp head module 300 can be placed in other parts of the vehicle, and then the light is transmitted to the light-incident end face 510 of the light guide strip 500 through the longer fiber bundle 400.

[0028] In this embodiment, the fiber bundle 400 further includes an outer sheath 440 and a fixing member 450. The outer sheath 440 is fitted around the outer ring of the fiber bundle 400 for bundling and protecting the optical fiber 460. The fixing member 450 is fixedly fitted at the end of the fiber bundle 400. The bracket 100 further includes a positioning part 110, which is used to cooperate with the fixing member 450 and fix the end of the fiber bundle 400. The positioning part 110 of the bracket 100 cooperates with the fixing member 450 of the fiber bundle 400 to make the installation of the fiber bundle 400 easier.

[0029] To ensure efficient light utilization, in this embodiment, the cross-sectional area of ​​the light-emitting part of the lamp head module 300 is smaller than the cross-sectional area of ​​the light-inlet part 410 of the fiber bundle 400, and the cross-sectional area of ​​the light-inlet end face 510 of the light guide strip 500 is smaller than the cross-sectional area of ​​the first light-emitting part 420 of the fiber bundle 400, so that as much light as possible from the lamp head module 300 can enter the light guide strip 500.

[0030] Example 2, refer to Figures 5-6An ambient light assembly includes a bracket 100, a lamp head module 300, an optical fiber bundle 400, a light guide strip 500, and a lampshade 200. The bracket 100 and the lampshade 200 cooperate to form a cavity that can accommodate the light guide strip 500. The lampshade 200 has a light-transmitting portion in a preset area, the length of which is greater than the length of the light-emitting area on the light guide strip 500. The lampshade 200 can be made of milky white plastic, which is light-transmitting and has a light-uniforming effect. The light-transmitting portion includes a first light-transmitting area 211 and a second light-transmitting area 212 that are adjacent to each other. The light guide strip 500 includes a light-incident end face 510 and reflective teeth, which are distributed along the length direction of the light guide strip 500 to reflect the light propagating inside the light guide strip 500 toward the light-transmitting portion. The optical fiber bundle 400 is formed by a bundle of several light guide fibers 460. The fiber bundle 400 includes a light-inlet section 410, a first light-outlet section 420, and a second light-outlet section 430. The light-inlet section 410 is a light-inlet end face formed by the convergence of the light-inlet ends of all the light guide fibers 460, and the first light-outlet section 420 is a light-outlet end face formed by the convergence of the light-outlet ends of most of the light guide fibers 460. The lamp head module 300 is located at one end of the lamp cover 200. The light-outlet section of the lamp head module 300 is close to the light-inlet section 410 of the fiber bundle 400, and the first light-outlet section 420 of the fiber bundle 400 is close to the light-inlet end face 510 of the light guide strip 500. The light emitted from the first light-outlet section 420 can be reflected by the reflective teeth and emitted from the first light-transmitting area 211 after entering the light guide strip 500. The light emitted from the second light-outlet section 430 can be emitted directly or indirectly from the second light-transmitting area 212.

[0031] Compared to Embodiment 1, this embodiment has an additional second light-emitting section 430 in the fiber bundle 400. Since the light emitted from the light guide strip 500 can only illuminate the first light-transmitting area 211 of the light-transmitting part of the lampshade 200, the light emitted from the second light-emitting section 430 can further illuminate the second light-transmitting area 212 in the light-transmitting part that cannot be illuminated by the light guide strip 500. In other words, this embodiment can further reduce the area of ​​black edges compared to Embodiment 1.

[0032] This embodiment provides two specific implementations of the second light-emitting section 430:

[0033] The first method, such as Figure 6 As shown, the second light-emitting part 430 is a light-emitting side formed by the convergence of the light-transmitting side at the preset position of the remaining light guide fiber 460. The light-emitting side is formed by special processing of the normal side to destroy the internal total internal reflection condition.

[0034] In the second method, the second light-emitting part 430 is a light-emitting end face formed by the convergence of the light-emitting ends of the remaining light-guiding fibers 460. The light emitted from the second light-emitting part 430 can be diffusely reflected from the inner wall of the bracket 100 and then emitted from the second light-transmitting area 212. The bracket 100 is preferably made of white plastic, and the outer sheath 440 and the fixing part 450 are also preferably made of white material. Since the black edge area is relatively small and the light source power is sufficient, the light emitted from the second light-emitting part 430 can meet the requirements of the light emitted from the second light-transmitting area 212 by diffuse reflection from the surface of the components.

[0035] In this embodiment, the optical fiber bundle 400 also includes an outer sheath 440 and a fixing member 450. The cross-sectional area of ​​the light-emitting part of the lamp head module 300 is smaller than the cross-sectional area of ​​the light-inlet part 410 of the optical fiber bundle 400, and the cross-sectional area of ​​the light-inlet end face 510 of the light guide strip 500 is smaller than the cross-sectional area of ​​the first light-emitting part 420 of the optical fiber bundle 400.

[0036] Although the present invention has been described with reference to preferred embodiments, those skilled in the art will understand that it is not limited to the description of the above embodiments, and various changes in form and detail may be made within the scope of the claims.

Claims

1. An ambient lighting assembly, characterized in that: Includes bracket, lamp head module, fiber optic bundle, light guide strip, and lamp cover. The bracket and the lampshade cooperate to form a cavity that can accommodate the light guide strip. The lampshade has a light-transmitting part in a preset area, and the length of the light-transmitting part is greater than or equal to the length of the light-emitting area on the light guide strip. The light guide strip includes a light-incident end face and reflective teeth; the reflective teeth are distributed along the length direction of the light guide strip and are used to reflect the light propagating inside the light guide strip toward the light-transmitting part. The optical fiber bundle is formed by a bundle of several optical guide fibers. The optical fiber bundle includes a light-inlet section and a first light-outlet section. The first light-outlet section is a light-outlet end face formed by the convergence of the light-outlet ends of at least a portion of the optical guide fibers. The lamp head module is located at one end of the lamp cover. The light-emitting part of the lamp head module is close to the light-inlet part of the optical fiber bundle, and the first light-emitting part of the optical fiber bundle is close to the light-inlet end face of the light guide strip.

2. An ambient lighting assembly according to claim 1, characterized in that: The fiber bundle also includes a second light-emitting section; the light-transmitting section includes an adjacent first light-transmitting area and a second light-transmitting area; The light emitted from the first light-emitting part enters the light guide strip and is reflected by the reflective teeth before being emitted from the first light-transmitting area. The light emitted from the second light-emitting part can be emitted directly or indirectly from the second light-transmitting area.

3. An ambient lighting assembly according to claim 2, characterized in that: The second light-emitting section is a light-emitting end face formed by the convergence of the light-emitting ends of the remaining light-guiding fibers. The light emitted from the second light-emitting section can be diffusely reflected from the inner wall of the support and emitted from the second light-transmitting area.

4. An ambient lighting assembly according to claim 2, characterized in that: The second light-emitting section is a light-emitting side formed by the convergence of the light-transmitting sides at the preset positions of the remaining light-guiding fibers. The light-emitting side is formed by special processing of the normal side to destroy the internal total internal reflection conditions.

5. An ambient lighting assembly according to claim 1, characterized in that: The fiber bundle also includes an outer sheath and a fixing member. The outer sheath is fitted around the outer ring of the fiber bundle, and the fixing member is fixedly fitted at the end of the fiber bundle.

6. An ambient lighting assembly according to claim 5, characterized in that: The bracket also includes a positioning part, which is used to cooperate with the fixing member and fix the end of the optical fiber bundle.

7. An ambient lighting assembly according to claim 1, characterized in that: The cross-sectional area of ​​the light-emitting part of the lamp head module is smaller than the cross-sectional area of ​​the light-inlet part of the optical fiber bundle, and the cross-sectional area of ​​the light-inlet end face of the light guide strip is smaller than the cross-sectional area of ​​the first light-emitting part of the optical fiber bundle.

8. A vehicle, characterized in that: Includes the ambient lighting assembly as described in any one of claims 1-7.

Images