Linear light-emitting elements, lamp assemblies, and automobiles

Abstract

The present invention provides a linear light-emitting element comprising a rod-shaped core layer, wherein at least one end of the core layer is configured to receive and allow light from a light source to enter it, and a cladding layer surrounding the outside of the core layer, wherein the refractive index of the cladding layer is lower than that of the core layer, and light from the core layer enters the cladding layer via refraction, wherein at least one layer of the linear light-emitting element is a colored layer. The present invention further relates to lamp assemblies and automobiles.

Description

Technical Field

[0001] Embodiments of the present invention generally relate to the field of lighting and / or signaling, particularly to linear light-emitting elements, lamp assemblies, and motor vehicles.

Background Art

[0002] Linear light-emitting elements such as optical fibers are used in motor vehicles to provide specific lighting and / or signaling functions, for example, used in rear lights, daytime running lights, parking lights, indicator lights, etc., or used as ambient lights to improve the atmosphere in the driver's cab. Also, according to the regulations on vehicle lights, lights with various functions should emit light of various colors. For example, according to the Chinese lighting regulations, the brake light should be able to emit red light, the daytime running light should be able to emit white light, the indicator light should be able to emit orange light, and so on.

[0003] In the prior art, a linear light-emitting element is usually composed of a core layer and a cladding layer surrounding the outside of the core layer, and the core layer and the cladding layer are colorless transparent or slightly white layers. When the outer lens of the lamp is also a colorless transparent, slightly white, or slightly darkened layer, in the daytime with a lot of sunlight, due to the mixture of sunlight and the colored light emitted by the light-emitting element, the color of the light finally presented by the lamp will fade, and it will not be able to meet the requirements.

Summary of the Invention

[0004] An object of the present invention is to solve or overcome at least one of the above other problems and the drawbacks of the prior art.

[0005] According to a first aspect of the present invention, a rod-shaped core layer is configured such that at least one end of the core layer receives and allows light from a light source to enter it, A cladding layer surrounding the outside of the core layer, wherein the refractive index of the cladding layer is lower than that of the core layer, and light from the core layer enters the cladding layer via refraction, A linear light-emitting element comprising, A linear light-emitting element is provided, wherein at least one layer of the linear light-emitting element is a colored layer.

[0006] In some embodiments, the linear light-emitting element has a side light emission area and further comprises a reflective layer formed on the outside of the cladding layer, wherein the reflective layer is configured to reflect light from the cladding layer toward the side light emission area. At least one layer of the linear light-emitting element, which is equipped with a reflective layer, is a colored layer.

[0007] In some embodiments, the reflective layer of the linear light-emitting element at least partially covers the outside of the cladding layer.

[0008] In some embodiments, the reflective layer is configured to cover at least half the area of ​​the outer surface of the cladding layer.

[0009] In some embodiments, the linear light-emitting element further comprises a transparent light-emitting layer that at least partially covers the outside of the cladding layer, and the transparent light-emitting layer is configured to transmit light from the cladding layer and the reflective layer. At least one layer of the linear light-emitting element, which has a transparent light-emitting layer, is a colored layer.

[0010] In some embodiments, the transparent light-emitting layer is connected to the reflective layer on the outer surface of the cladding layer and together surrounds the outer surface of the cladding layer.

[0011] In some embodiments, the lateral light emission region includes at least a portion of the outer surface of the transparent light emission layer.

[0012] In some embodiments, the linear light-emitting element is A transparent light-emitting layer surrounding the outer surface of the cladding layer, configured to transmit light from the cladding layer. Furthermore, The reflective layer is opaque and partially covers the outer surface of the transparent light-emitting layer, and the reflective layer is configured to face at least partially the side light-emitting region so as to reflect light from the transparent light-emitting layer toward the side light-emitting region. At least one layer of the linear light-emitting element, which has a transparent light-emitting layer, is a colored layer.

[0013] In some embodiments, the reflective layer is configured to cover at least half the area of ​​the outer surface of the transparent light-emitting layer.

[0014] In some embodiments, the lateral light emission region includes at least a portion of the outer surface of the transparent light emission layer.

[0015] In some embodiments, the core layer is a colorless layer, and the cladding layer and / or reflective layer is a colored layer.

[0016] In some embodiments, the core layer is a colorless layer, and at least one of the cladding layer, reflective layer, and transparent light-emitting layer is a colored layer.

[0017] In some embodiments, at least one of the cladding layer, reflective layer, and transparent light-emitting layer is one of the red, orange, blue, or green layers.

[0018] In some embodiments, the linear light-emitting element includes a flexible optical fiber that emits light laterally.

[0019] According to another aspect of the present invention, an embodiment further provides a lamp assembly including any one of the linear light-emitting elements as described above and a light source module configured to emit light toward at least one end of the linear light-emitting element.

[0020] In some embodiments, the light source module includes a light-emitting element capable of emitting white light or colored light.

[0021] According to yet another aspect of the present invention, an embodiment further provides a motor vehicle including the lamp assembly as described above.

[0022] Other objects and advantages of the present invention will become apparent through the following detailed description of the present invention with reference to the drawings. The drawings can also assist in a broad understanding of the present invention.

[0023] These and / or other aspects, features, and advantages of the present invention will become apparent and easier to understand through the description of the following exemplary embodiments in connection with the accompanying drawings.

Brief Description of the Drawings

[0024] [Figure 1] Schematic perspective view of the linear light-emitting element 1 according to the first embodiment of the present invention. [Figure 2] Schematic cross-sectional view of the linear light-emitting element 1 according to the first embodiment of the present invention taken along line A-A of FIG. 1. [Figure 3] Schematic perspective view of the linear light-emitting element 1 according to the second embodiment of the present invention. [Figure 4] Schematic cross-sectional view of the linear light-emitting element 1 according to the second embodiment of the present invention taken along line B-B of FIG. 3. [Figure 5] Schematic cross-sectional view of the linear light-emitting element 1 according to the third embodiment of the present invention.

Modes for Carrying Out the Invention

[0025] The embodiments of the present invention will now be described in detail in reference to the accompanying drawings. In this description, identical or similar components are indicated by identical or similar reference numerals. The following description of embodiments of the present invention with reference to the accompanying drawings is intended to illustrate the generally disclosed concepts of the present invention and should not be interpreted as limiting the invention.

[0026] Furthermore, in the following detailed description, many specific details are elaborated to facilitate explanation and to provide a broad understanding of the embodiments of the present invention. However, it is clear that one or more embodiments can be carried out without these specific details. In other sections, well-known structures and devices are shown in the form of references to simplify the drawings.

[0027] An embodiment of the present invention comprises a linear light-emitting element 1 and a light source module (not shown). The lamp assembly is preferably capable of emitting colored light to meet regulatory requirements or specific needs (such as styling requirements). In this case, color refers to colors other than white, black, and gray. Examples of lamp assemblies include, but are not limited to, taillights, brake lights, indicator lights, side marker lights, parking lights, daytime running lights, and ambient lights.

[0028] Figures 1 and 3 are schematic perspective views of linear light-emitting elements 1 according to the first and second embodiments of the present invention, respectively. As shown in Figure 1, the linear light-emitting element 1 according to the embodiment of the present invention is of the peripheral light-emitting type (may include a peripheral light-emitting area 15), or as shown in Figure 3, the linear light-emitting element 1 according to the embodiment of the present invention is of the lateral light-emitting type (may include a lateral light-emitting area 15). The light source module is configured to emit light rays toward at least one end 10 of the linear light-emitting element 1. These light rays are incident on one end of the linear light-emitting element 1 and propagate longitudinally toward the opposite end, and at the same time, a portion of the light rays exit from at least a portion of the peripheral surface of the linear light-emitting element 1 (i.e., from the peripheral light-emitting area 15 or the lateral light-emitting area 16 of the linear light-emitting element 1).

[0029] As a non-limiting example, the light source module may include a printed circuit board and light-emitting elements (e.g., LEDs) mounted on the printed circuit board. The light source module may be positioned at one end of the linear light-emitting element 1, or at two opposite ends, as needed. The light-emitting elements are capable of emitting white light or colored light.

[0030] The following describes in detail various structures of the linear light-emitting element 1 with respect to various embodiments. 1. First Embodiment

[0031] Figure 1 is a schematic perspective view of a linear light-emitting element 1 according to a first embodiment of the present invention, and Figure 2 is a schematic cross-sectional view of the linear light-emitting element 1 according to the first embodiment of the present invention shown in Figure 1, cut along line AA. As shown in Figures 1 and 2, the linear light-emitting element 1 comprises a rod-shaped core layer 11 made of a transparent material and a cladding layer 12 surrounding the outside of the core layer 11. Light from the light source module enters the interior of the core layer 11 through the end 10. The light can propagate through the interior of the core layer 11 by total internal reflection along the longitudinal direction of the linear light-emitting element 1 toward the other end. In this embodiment, the core layer 11 has a circular cross-sectional shape, but the first core layer 11 may have an elliptical, polygonal, or any other suitable cross-sectional shape. The cladding layer 12 is made of a transparent material and has a lower refractive index than the core layer 11. Some of the light from the core layer 11 can enter the cladding layer 12 via refraction. For example, the cladding layer 12 may be made of a scattering material, or light extraction elements (including, but not limited to, groups of optical protrusions, optical recesses, optical rough surfaces, and sawtooth patterns) may be provided on the cladding layer 12. As a result, the conditions for total internal reflection of some of the light within the core layer 11 are interrupted, allowing light to enter the cladding layer 12.

[0032] In the present invention, "transparent material" refers to a material that can transmit light, which may be completely transparent or semi-transparent, and may have other transmittances or haze values ​​(without specific limitations).

[0033] Preferably, in order to reduce costs and simplify the process, the various layers of the linear light-emitting element 1 may be integrally formed by one or more of the following methods, for example, co-extrusion, perfusion, and injection molding.

[0034] In the first embodiment of the present invention, the core layer 11 and / or cladding layer 12 of the linear light-emitting element 1 are colored to ensure that regulatory requirements and specific needs are still met when the colored light emitted by the lamp assembly is mixed with sunlight. It is preferable that the cladding layer 12 is colored while the core layer 11 of the linear light-emitting element 1 is made colorless and transparent. As a result, light absorption by the core layer 11 is reduced, and the light utilization efficiency is improved.

[0035] A linear light-emitting element 1 with a colored layer is suitable as a light-emitting element in a light source module that can emit colored light or white light of the same color. When the color of the colored layer of the linear light-emitting element 1 is the same as the color of the light emitted by the light-emitting element of the light source module, the final light emitted by the lamp assembly will be more similar in color to the light emitted by the light-emitting element. When a linear light-emitting element 1 with a colored layer is suitable as a light-emitting element in a light source module that can emit white light, higher optical efficiency is achieved because the linear light-emitting element absorbs less white light compared to using a light-emitting element that can emit colored light. On the other hand, the final color of the light emitted by the lamp assembly will be brighter (lighter) than the color of the colored layer of the linear light-emitting element 1.

[0036] In a non-limiting example, the core layer 11 and / or cladding layer 12 of the linear light-emitting element 1 may be one of the following: a red layer, an orange layer, a blue layer, or a green layer. For example, if the core layer 11 and / or cladding layer 12 is a red layer, the linear light-emitting element 1 may be used to perform a brake light, and if the core layer 11 and / or cladding layer 12 is an orange layer, the linear light-emitting element 1 may be used to perform an indicator light.

[0037] In this invention, a specific color represents the color system of that color. For example, if both the core layer 11 and the cladding layer 12 are red layers, it should be noted that this means both belong to the red color system, and that their lightness levels may be the same or different.

[0038] In the first embodiment of the present invention, as a result of the core layer 11 and / or cladding layer 12 of the linear light-emitting element 1 being colored layers, when the linear light-emitting element 1 is used in a lamp assembly, the final color of the light does not fade even when the light emitted by the linear light-emitting element 1 mixes with sunlight, thereby satisfying regulatory requirements and specific needs for the lamp assembly.

[0039] From another perspective, when the lamp assembly is not lit, the linear light-emitting element 1 has a colored layer, making the lamp assembly appear colored even when it is not lit. This is beneficial when regulations or customers specifically require that the lamp assembly retain its color even when not lit. 2. Second Embodiment

[0040] Figure 3 is a schematic perspective view of the linear light-emitting element 1 according to the second embodiment of the present invention, and Figure 4 is a schematic cross-sectional view of the linear light-emitting element 1 according to the second embodiment of the present invention shown in Figure 3, cut along line BB. As shown in Figures 3 and 4, the linear light-emitting element 1 according to the second embodiment of the present invention also comprises a core layer 11 and a cladding layer 12, similar to the linear light-emitting element 1 according to the first embodiment, and only the differences from the first embodiment will be explained here.

[0041] The linear light-emitting element 1 according to the second embodiment of the present invention has a side light emission area 16. This means that only a portion of the outer surface emits light. Specifically, the linear light-emitting element 1 further comprises a reflective layer 13 containing an opaque material. The reflective layer 13 at least partially covers the cladding layer 12 and faces the side light emission area 16, and is configured to reflect light from the cladding layer 12 toward the side light emission area 16. As a result of providing a reflective layer containing an opaque material outside the cladding layer, the linear light-emitting element no longer emits light throughout the entire 360-degree range, but rather emits light only in the required partial area (side light emission area), thereby reducing light leakage and improving optical efficiency. The overall brightness of the linear light-emitting element is increased, and the requirements can be met even with minimal brightness.

[0042] In order to allow more light to be emitted through the side light emission area 16, it is preferable that the reflective layer 13 is configured to cover at least half the area of ​​the outer surface of the transparent light emission layer 12.

[0043] In a second embodiment of the present invention, to ensure that regulatory requirements and specific needs are still met when the colored light emitted by the lamp assembly mixes with sunlight, at least one of the core layer 11, cladding layer 12, and reflective layer 13 of the linear light-emitting element 1 is colored. It is preferable that the core layer 11 of the linear light-emitting element 1 is made colorless and transparent, while the cladding layer 12 and / or reflective layer 13 are colored. As a result, light absorption by the core layer 11 is reduced, and the light utilization efficiency is improved.

[0044] A linear light-emitting element 1 with a colored layer is suitable as a light-emitting element in a light source module that can emit colored light or white light of the same color. When the color of the colored layer of the linear light-emitting element 1 is the same as the color of the light emitted by the light-emitting element of the light source module, the final light emitted by the lamp assembly will be more similar in color to the light emitted by the light-emitting element. When a linear light-emitting element 1 with a colored layer is suitable as a light-emitting element in a light source module that can emit white light, higher optical efficiency is achieved because the linear light-emitting element absorbs less white light compared to using a light-emitting element that can emit colored light. On the other hand, the final color of the light emitted by the lamp assembly will be brighter (lighter) than the color of the colored layer of the linear light-emitting element 1.

[0045] In non-limiting examples, at least one of the core layer 11 and the cladding layer 12 of the linear light-emitting element 1 is a red layer, an orange layer, a blue layer, or a green layer. For example, if the linear light-emitting element 1 is used to implement a brake light, the core layer 11 may be a colorless transparent layer, the cladding layer 12 may be a red layer, and the reflective layer 13 may be a white opaque layer; or the cladding layer 12 may be a colorless transparent layer, the reflective layer 12 may be a red opaque layer; or both the cladding layer 12 and the reflective layer 13 may be red layers.

[0046] Furthermore, as shown in Figure 4, the linear light-emitting element 1 according to the second embodiment of the present invention may further include a transparent light-emitting layer 14 made of a transparent material that at least partially covers the cladding layer 12. The transparent light-emitting layer 14 may be positioned in particular opposite to the reflective layer 13 and is configured to transmit light from the cladding layer 12 and the reflective layer 13. In other words, in this embodiment, the lateral light-emitting region 16 includes a portion of the outer circumferential surface of the transparent light-emitting layer 14.

[0047] Preferably, the transparent light-emitting layer 14 and the reflective layer 13 are connected circumferentially on the outer surface of the cladding layer 12, and together surround the outer surface of the cladding layer 12. In other words, the reflective layer 13 covers a portion of the cladding layer 12, and the transparent light-emitting layer 14 covers the rest of the cladding layer 12, with the two layers connected circumferentially to prevent unexpected light leakage.

[0048] The transparent light-emitting layer 14 may include scattering elements to scatter light from the cladding layer and reflective layer and improve the uniformity of the illumination effect. For example, but not limited to, the transparent light-emitting layer 14 may be made of a scattering material, or a group of scattering unit elements such as optical protrusions, optical depressions, or optical rough surfaces may be formed on the inner and / or outer surface of the transparent light-emitting layer.

[0049] In a second embodiment of the present invention, the cladding layer is protected by a transparent light-emitting layer covering it, preventing scratches on the cladding layer and thus avoiding undesirable bright spots caused by scratches on the cladding layer. The transparent light-emitting layer can also improve the wear resistance of the linear light-emitting element.

[0050] Preferably, in order to reduce costs and simplify the process, the various layers of the linear light-emitting element 1 may be integrally formed by one or more of the following methods, for example, co-extrusion, perfusion, and injection molding.

[0051] To ensure that regulatory requirements and specific needs are still met when the colored light emitted by the lamp assembly mixes with sunlight, if the linear light-emitting element 1 is equipped with a transparent light-emitting layer 14, at least one of the core layer 11, cladding layer 12, reflective layer 13, and transparent light-emitting layer 14 of the linear light-emitting element 1 may be colored. It is preferable that at least one of the cladding layer 12, reflective layer 13, and transparent light-emitting layer 14 is colored as a result of the core layer 11 of the linear light-emitting element 1 being made colorless and transparent. This reduces light absorption by the core layer 11 and improves the efficiency of light utilization.

[0052] In a non-limiting example, at least one of the core 11, cladding layer 12, reflective layer 13, and transparent light-emitting layer 14 of the linear light-emitting element 1 is one of the red, orange, blue, or green layers. For example, if the linear light-emitting element 1 is used to implement a brake light, the core 11 and cladding layer 12 may be colorless transparent layers, the reflective layer 13 may be a white opaque layer, and the transparent light-emitting layer 14 may be a red layer; or the reflective layer 13 may be a red opaque layer, and the transparent light-emitting layer 14 may be colorless transparent; or both the reflective layer 13 and the transparent light-emitting layer 14 may be red layers.

[0053] In a second embodiment of the present invention, as a result of at least one of the core layer 11, cladding layer 12, reflective layer 13, and (if any) transparent light-emitting layer 14 of the linear light-emitting element 1 being a colored layer, when the linear light-emitting element 1 is used in a lamp assembly, the final color of the light emitted by the linear light-emitting element 1 does not fade when mixed with sunlight, thereby satisfying regulatory requirements and specific needs for the lamp assembly.

[0054] From another perspective, when the lamp assembly is not lit, the linear light-emitting element 1 has a colored layer, making the lamp assembly appear colored even when it is not lit. This is beneficial when regulations or customers specifically require that the lamp assembly retain its color even when not lit. 3. Third Embodiment

[0055] Figure 5 is a schematic cross-sectional view of the linear light-emitting element 1 according to the third embodiment of the invention. As shown in Figures 3 and 4, the linear light-emitting element 1 according to the third embodiment of the present invention also comprises a core layer 11 and a cladding layer 12, similar to the first embodiment, and only the differences from the first embodiment will be explained here.

[0056] As shown in Figure 5, the linear light-emitting element 1 according to the third embodiment of the present invention has a lateral light-emitting region 16, which means that only a portion of the outer surface emits light. Specifically, the linear light-emitting element 1 further comprises a reflective layer 13 and a transparent light-emitting layer 14. The transparent light-emitting layer 14 extends across the outer surface of the cladding layer 12, that is, completely covers the outer surface of the cladding layer 12. The transparent light-emitting layer 14 is made of a transparent material and is configured to transmit light from the cladding layer 12. The lateral light-emitting region 16 of the linear light-emitting element 1 includes at least a portion of the outer surface of the transparent light-emitting layer 14. The reflective layer 13 at least partially covers the outer surface of the transparent light-emitting layer 14, thereby separating it from the cladding layer 12, that is, not in contact with the cladding layer 12. The reflective layer 13 contains an opaque material and is configured to at least partially face the side light emission region 16, reflecting light from the transparent light emission layer 14 toward the side light emission region 16. The reflected light then passes through the transparent light emission layer 14, the cladding layer 12, and the core layer 11 to reach the side light emission region 16.

[0057] In embodiments of the present invention, by providing a reflective layer containing an opaque material on the outside of the cladding layer, the linear light-emitting element no longer emits light throughout the entire 360-degree range, but rather emits light only in the required partial area (side light emission area), thereby reducing light leakage and improving optical efficiency. The overall brightness of the linear light-emitting element is increased, and the requirements can be met even with minimal brightness.

[0058] In embodiments of the present invention, the cladding layer is protected by a transparent light-emitting layer covering it, preventing scratches on the cladding layer and thus avoiding undesirable bright spots caused by scratches on the cladding layer. The transparent light-emitting layer can also improve the wear resistance of the linear light-emitting element.

[0059] In embodiments of the present invention, if a portion of the outer surface of the cladding layer is covered by the reflective layer, then if the adhesion between the cladding layer material and the reflective layer material is insufficient (for example, but not limited to, when the cladding layer is made of a fluorine-containing material), a void will appear between the cladding layer and the reflective layer. Since the cladding layer is transparent and the reflective layer is opaque, the void will be very noticeable and will have a significant impact on the appearance. Therefore, in embodiments of the present invention, even if a void appears as a result of the transparent light-emitting layer surrounding the cladding layer, the void will not be noticeable (because both layers are transparent).

[0060] In order to allow more light to be emitted through the side light emission area 16, it is preferable that the reflective layer 13 is configured to cover at least half the area of ​​the outer surface of the transparent light emission layer 14.

[0061] The transparent light-emitting layer 14 may include scattering elements to scatter light from the cladding layer and reflective layer and improve the uniformity of the illumination effect. For example, but not limited to, the transparent light-emitting layer 14 may be made of a scattering material, or a group of scattering unit elements such as optical protrusions, optical depressions, or optical rough surfaces may be formed on the inner and / or outer surface of the transparent light-emitting layer.

[0062] Preferably, in order to reduce costs and simplify the process, the various layers of the linear light-emitting element 1 may be integrally formed by, for example, co-extrusion, injection molding, or one or more of the injection molding methods.

[0063] To ensure that regulatory requirements and specific needs are still met when the colored light emitted by the lamp assembly mixes with sunlight, at least one of the core layer 11, cladding layer 12, reflective layer 13, and transparent light-emitting layer 14 of the linear light-emitting element 1 may be colored. Preferably, the core layer 11 of the linear light-emitting element 1 is made colorless and transparent, and as a result, at least one of the cladding layer 12, reflective layer 13, and transparent light-emitting layer 14 is colored. This reduces light absorption by the core layer 11 and improves light utilization efficiency.

[0064] In a non-limiting example, at least one of the core 11, cladding layer 12, reflective layer 13, and transparent light-emitting layer 14 of the linear light-emitting element 1 is one of the red, orange, blue, or green layers. For example, if the linear light-emitting element 1 is used to implement an indicator light, the core 11 and cladding layer 12 may be colorless transparent layers, the reflective layer 13 may be a white opaque layer, and the transparent light-emitting layer 14 may be an orange layer; or the reflective layer 13 may be an orange opaque layer, and the transparent light-emitting layer 14 may be a colorless transparent layer; or both the reflective layer 13 and the transparent light-emitting layer 14 may be orange layers.

[0065] In a third embodiment of the present invention, as a result of at least one of the core layer 11, cladding layer 12, reflective layer 13, and transparent light-emitting layer 14 of the linear light-emitting element 1 being a colored layer, when the linear light-emitting element 1 is used in a lamp assembly, the final color of the light does not fade even when the light emitted by the linear light-emitting element 1 mixes with sunlight, thereby satisfying regulatory requirements and specific needs for the lamp assembly.

[0066] From another perspective, when the lamp assembly is not lit, the linear light-emitting element 1 has a colored layer, making the lamp assembly appear colored even when it is not lit. This is beneficial when regulations or customers specifically require that the lamp assembly retain its color even when not lit.

[0067] Furthermore, in non-limiting embodiments of the present invention, the linear light-emitting element 1 may include a flexible optical fiber that emits light laterally and can be bent as needed. However, the present invention is not limited to this, but rather may include any suitable type of linear light-emitting element.

[0068] Embodiments of the present invention further provide an automatic vehicle comprising a lamp assembly as described in any of the above embodiments.

[0069] While the present invention has been described in relation to the drawings, the embodiments disclosed in the drawings are intended to provide illustrative depictions of preferred embodiments of the present invention and should not be construed as limitations of the invention. The dimensional proportions in the drawings are merely schematic and should not be construed as limitations of the invention.

[0070] While several embodiments of the overall concept of the present invention have been illustrated and described, those skilled in the art will understand that modifications to these embodiments can be made without departing from the principles and spirit of the overall disclosed concept. The scope of the present invention is defined by the claims and the concept of equivalents.

Claims

1. In the linear light-emitting element (1), A rod-shaped core layer (11), wherein at least one end of the core layer (11) is configured to receive and allow light from a light source to enter it, A cladding layer (12) surrounding the outside of the core layer (11), wherein the refractive index of the cladding layer (12) is lower than that of the core layer (11), and light from the core layer (11) is incident on the cladding layer (12) via refraction. Equipped with, A linear light-emitting element (1) characterized in that at least one layer of the linear light-emitting element (1) is a colored layer.

2. The linear light-emitting element (1) has a side light emission area (16) and further comprises a reflective layer (13) formed on the outside of the cladding layer (12), wherein the reflective layer (13) is configured to reflect light from the cladding layer (12) toward the side light emission area (16). The linear light-emitting element (1) according to claim 1, characterized in that at least one layer of the linear light-emitting element (1) having the reflective layer (13) is a colored layer.

3. The linear light-emitting element (1) according to claim 2, characterized in that the reflective layer (13) of the linear light-emitting element (1) at least partially covers the outside of the cladding layer (12).

4. The linear light-emitting element (1) according to claim 3, characterized in that the reflective layer (13) is configured to cover at least half the area of ​​the outer surface of the cladding layer (12).

5. The linear light-emitting element (1) further comprises a transparent light-emitting layer (14) that at least partially covers the outside of the cladding layer (12), and the transparent light-emitting layer (14) is configured to transmit light from the cladding layer (12) and the reflective layer (13). The linear light-emitting element (1) according to claim 3, characterized in that at least one layer of the linear light-emitting element (1) having the transparent light-emitting layer (14) is a colored layer.

6. The linear light-emitting element (1) according to claim 5, characterized in that the transparent light-emitting layer (14) is connected to the reflective layer (13) on the outer circumferential surface of the cladding layer (12) and together surrounds the outer circumferential surface of the cladding layer (12).

7. The linear light-emitting element (1) according to claim 5, characterized in that the lateral light-emitting region (16) includes at least a portion of the outer circumferential surface of the transparent light-emitting layer (14).

8. The linear light-emitting element (1) is, A transparent light-emitting layer (14) surrounds the outer surface of the cladding layer (12), and further comprises a transparent light-emitting layer (14) configured to transmit light from the cladding layer (12), The reflective layer (13) is opaque and partially covers the outer surface of the transparent light-emitting layer (14), and the reflective layer (13) is configured to at least partially face the side light-emitting region (16) so as to reflect light from the transparent light-emitting layer (14) toward the side light-emitting region (16). The linear light-emitting element (1) according to claim 2, characterized in that at least one layer of the linear light-emitting element (1) having the transparent light-emitting layer (14) is a colored layer.

9. The linear light-emitting element (1) according to claim 8, characterized in that the reflective layer (13) is configured to cover at least half the area of ​​the outer peripheral surface of the transparent light-emitting layer (14).

10. The linear light-emitting element (1) according to claim 8, characterized in that the lateral light-emitting region (16) includes at least a portion of the outer circumferential surface of the transparent light-emitting layer (14).

11. The linear light-emitting element (1) according to any one of claims 2 to 4, characterized in that the core layer (11) is a colorless layer, and the cladding layer (12) and / or the reflective layer (13) are colored layers.

12. The linear light-emitting element (1) according to any one of claims 5 to 10, characterized in that the core layer (11) is a colorless layer, and at least one of the cladding layer (12), the reflective layer (13), and the transparent light-emitting layer (14) is a colored layer.

13. The linear light-emitting element (1) according to claim 12, characterized in that at least one of the cladding layer (12), the reflective layer (13), and the transparent light-emitting layer (14) is one of a red layer, an orange layer, a blue layer, or a green layer.

14. The linear light-emitting element (1) according to any one of claims 1 to 10, characterized in that the linear light-emitting element (1) comprises a flexible optical fiber that emits light to the side.

15. A linear light-emitting element (1) according to any one of claims 1 to 14, A light source module configured to emit light toward at least one end of the linear light-emitting element (1), A lamp assembly characterized by having the following features.

16. The lamp assembly according to claim 15, characterized in that the light source module includes a light-emitting element capable of emitting white light or colored light.

17. An automatic vehicle characterized by comprising the lamp assembly described in claim 15 or 16.

Images