阅读说明：本技术 基于led光源的车载氛围灯 (Vehicle-mounted atmosphere lamp based on LED light source ) 是由 李磊 于 2021-07-08 设计创作，主要内容包括：本发明公开了一种基于LED光源的车载氛围灯,其包括壳体和柔性光纤,所述壳体内安装有LED光源发射器、光束准直器,所述光束准直器具有一出光口,所述柔性光纤与所述出光口相连,所述柔性光纤包括包覆层、中间层和芯层,所述包覆层包裹在所述中间层的外部,所述中间层包裹在所述芯层的外部,所述中间层内均匀设有若干散射粒子。本发明采用的柔性光纤光源耦合效率更高,柔性灯纤的中间层掺杂大量散射粒子,保证光线折射的次数更多,光线能在柔性光纤中传播更远的距离。(The invention discloses a vehicle-mounted atmosphere lamp based on an LED light source, which comprises a shell and a flexible optical fiber, wherein an LED light source emitter and a beam collimator are arranged in the shell, the beam collimator is provided with a light outlet, the flexible optical fiber is connected with the light outlet, the flexible optical fiber comprises a coating layer, a middle layer and a core layer, the coating layer is coated outside the middle layer, the middle layer is coated outside the core layer, and a plurality of scattering particles are uniformly arranged in the middle layer. The flexible optical fiber light source adopted by the invention has higher coupling efficiency, and the middle layer of the flexible optical fiber is doped with a large amount of scattering particles, so that the light ray refraction times are more, and the light ray can be transmitted in the flexible optical fiber for a longer distance.)

1. The utility model provides a vehicle-mounted atmosphere lamp based on LED light source which characterized in that: it includes casing (1) and flexible optic fibre (4), install LED light source transmitter (2), beam collimator (3) in casing (1), beam collimator (3) have a light-emitting window (31), flexible optic fibre (4) with light-emitting window (31) link to each other, flexible optic fibre (4) are including coating (41), intermediate level (42) and sandwich layer (43), coating (41) parcel is in the outside of intermediate level (42), intermediate level (42) parcel is in the outside of sandwich layer (43), evenly be equipped with a plurality of scattering particles (421) in intermediate level (42).

2. The vehicle-mounted atmosphere lamp based on the LED light source as claimed in claim 1, wherein: the coating layers (41) are made of fluorocarbon resin, and the core layer (43) is made of acrylic resin.

3. The vehicle-mounted atmosphere lamp based on the LED light source as claimed in claim 2, wherein: the refractive index of the intermediate layer (42) is higher than that of the core layer (43), and the refractive index of the clad layer (41) is higher than that of the core layer (43) and lower than that of the intermediate layer (42).

4. The vehicle-mounted atmosphere lamp based on the LED light source as claimed in claim 3, wherein: the refractive index of the fluorocarbon resin adopted by the cladding layer (41) is 1.48, and the refractive index of the acrylic resin adopted by the core layer (43) is 1.34.

5. The vehicle-mounted atmosphere lamp based on the LED light source as claimed in claim 1, wherein: the scattering particles are hydrophobic inorganic oxide particles, and the mass percentage of the inorganic oxide particles is 20-30% based on the total mass of the intermediate layer (42).

6. The vehicle-mounted atmosphere lamp based on the LED light source as claimed in claim 5, wherein: the scattering particles (421) are spherical, and the spherical particle size is 1-3 mu m.

7. The vehicle-mounted atmosphere lamp based on the LED light source as claimed in claim 5, wherein: the scattering particles (421) are ellipsoidal, the major axis of the ellipsoidal scattering particles is 2-3 μm, and the minor axis is 1-1.3 μm.

8. The vehicle-mounted atmosphere lamp based on the LED light source as claimed in claim 1, wherein: the flexible optical fiber (4) is provided with a gradually narrowed insertion end (44), and a semicircular bulge (441) protruding outwards is arranged on the insertion end (44).

9. The vehicle-mounted atmosphere lamp based on the LED light source as claimed in claim 1, wherein: the inner wall of casing (1) is equipped with heat dissipation layer (11), the material of heat dissipation layer (11) is the stone mill heat dissipation membrane or nanometer carbon heat dissipation membrane.

Technical Field

The invention relates to the technical field of automotive interior trim, in particular to a vehicle-mounted atmosphere lamp based on an LED light source.

Background

Currently, one of the mainstream technologies of an interior atmosphere lamp is LED light source matching with side emitting Polymer Optical Fiber (POF). Unlike conventional optical fibers, which primarily transmit light from an entrance end face to an exit end face of the optical fiber, side emitting Polymer Optical Fibers (POFs), which primarily transmit a portion of the light out of the outer layer of the optical fiber to provide side emission. The LED is used as a light source, light enters the POF, and the light energy transmitted from the outer layer of the POF changes an LED point light source into a linear light source. Polymer Optical Fibers (POFs) have the disadvantages of low coupling efficiency of light sources, non-uniform light sources, and inability to achieve long transmission distances.

To this end, we propose a vehicle-mounted atmosphere lamp based on an LED light source to solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide a vehicle-mounted atmosphere lamp based on an LED light source, and aims to improve the light source coupling efficiency and realize light conduction illumination with low cost, high efficiency and long distance.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a vehicle-mounted atmosphere lamp based on LED light source, its includes casing and flexible optic fibre, install LED light source transmitter, beam collimator in the casing, beam collimator has a light-emitting window, flexible optic fibre with the light-emitting window links to each other, flexible optic fibre includes coating, intermediate level and sandwich layer, the coating parcel is in the outside in intermediate level, the intermediate level parcel is in the outside of sandwich layer, evenly be equipped with a plurality of scattering particles in the intermediate level.

The coating layer is made of fluorocarbon resin, and the core layer is made of acrylic resin.

The intermediate layer has a refractive index higher than that of the core layer, and the clad layer has a refractive index higher than that of the core layer and lower than that of the intermediate layer.

The refractive index of the fluorocarbon resin adopted by the cladding layer is 1.48, and the refractive index of the acrylic resin adopted by the core layer 43 is 1.34.

The scattering particles are hydrophobic inorganic oxide particles, and the mass percentage of the inorganic oxide particles is 20-30% based on the total mass of the intermediate layer.

The scattering particles are spherical, and the spherical particle size is 1-3 mu m.

The scattering particles are ellipsoidal, the major axis of the ellipsoidal scattering particles is 2-3 μm, and the minor axis is 1-1.3 μm.

The flexible optical fiber is provided with a gradually narrowed insertion end, and the insertion end is provided with a semicircular bulge protruding outwards.

The inner wall of casing is equipped with the heat dissipation layer, the material on heat dissipation layer is stone mill heat dissipation membrane or nanometer carbon heat dissipation membrane.

Compared with the prior art, the invention has the beneficial effects that:

(1) the light source coupling efficiency is higher: the refractive index of fluorocarbon resin adopted by the coating layer of the flexible lamp fiber is 1.48, the refractive index of acrylic resin adopted by the core layer is 1.34, the light-emitting angle is relatively small, most light rays are concentrated within a 20-degree divergence angle, and the light source coupling efficiency can reach 90-98%.

(2) The uniform transmission distance of the light source is longer: a large number of scattering particles are doped in the middle layer of the flexible optical fiber, most of light rays can be transmitted for a distance and then are emitted out of the flexible optical fiber, the number of times of light ray refraction is more, and the light rays can be transmitted for a longer distance in the flexible optical fiber.

Drawings

FIG. 1 is a schematic structural diagram of a vehicle-mounted atmosphere lamp based on an LED light source according to the present invention;

FIG. 2 is a cross-sectional view of the flexible optical fiber of FIG. 1;

fig. 3 is a schematic diagram of a plug end structure of a flexible optical fiber.

In the figure: the LED light source comprises a shell 1, an LED light source emitter 2, a beam collimator 3, a flexible optical fiber 4, a cladding layer 41, a middle layer 42, a core layer 43, a heat dissipation layer 11, a light outlet 31, a plug end 44, a semicircular projection 441 and scattering particles 421.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 2, the invention is a vehicle-mounted atmosphere lamp based on an LED light source, which includes a housing 1 and a flexible optical fiber 4, wherein an LED light source emitter 2 and a beam collimator 3 are installed in the housing 1, the beam collimator 3 has a light outlet 31, the flexible optical fiber 4 is connected to the light outlet 31, the flexible optical fiber 4 includes a cladding layer 41, an intermediate layer 42 and a core layer 43, the cladding layer 41 is wrapped outside the intermediate layer 42, the intermediate layer 42 is wrapped outside the core layer 43, and a plurality of scattering particles 421 are uniformly arranged in the intermediate layer 42.

The cladding layer 41 is made of fluorocarbon resin, and the core layer 43 is made of acrylic resin. The refractive index of the intermediate layer 42 is higher than that of the core layer 43, and the refractive index of the clad layer 41 is higher than that of the core layer 43 and lower than that of the intermediate layer 42. The refractive index of the fluorocarbon resin adopted by the cladding layer 41 is 1.48, the refractive index of the acrylic resin adopted by the core layer 43 is 1.34, the light-emitting angle is relatively small, most light rays are concentrated within a 20-degree divergence angle, and the coupling efficiency can reach 90-98%.

The scattering particles are hydrophobic inorganic oxide particles, and the mass percentage of the inorganic oxide particles is 20-30% based on the total mass of the intermediate layer 42.

In the invention, the scattering particles are spherical, the spherical particle diameter is 1-3 μm, and a plurality of scattering particles 9 are uniformly distributed in the intermediate layer 42, so that the light refraction times are more, and the light transmission distance is longer. In other embodiments, the scattering particles are ellipsoidal, the ellipsoidal scattering particles have a major axis of 2-3 μm and a minor axis of 1-1.3 μm.

The flexible optical fiber 4 is provided with a tapered insertion end 44, and the insertion end 44 is provided with a semicircular protrusion 441 protruding outwards, so that the flexible optical fiber can be conveniently inserted into a gap and is not easy to fall off.

In this embodiment, the inner wall of the casing 1 is provided with a heat dissipation layer 11, and the heat dissipation layer 11 is made of a stone-milled heat dissipation film or a nano-carbon heat dissipation film.

In the present invention, the flexible optical fiber 4 is formed by an extrusion process, not injection molding, and only needs to be cut to a desired length without additional mold cost. The flexible optical fiber 4 can be bent, is free in design, can be attached to a curved surface, meets the three-dimensional design, and has more choices in matching with automotive interior.

Compared with the traditional technology, the flexible optical fiber adopted by the invention has the advantages that:

(1) the light source coupling efficiency is higher: the refractive index of fluorocarbon resin adopted by the coating layer of the flexible lamp fiber is 1.48, the refractive index of acrylic resin adopted by the core layer is 1.34, the light-emitting angle is relatively small, most light rays are concentrated within a 20-degree divergence angle, and the light source coupling efficiency can reach 90-98%.

(2) The uniform transmission distance of the light source is longer: a large number of scattering particles are doped in the middle layer of the flexible optical fiber, most of light rays can be transmitted for a distance and then are emitted out of the flexible optical fiber, the number of times of light ray refraction is more, and the light rays can be transmitted for a longer distance in the flexible optical fiber.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.