Integrated dual-color automotive lighting system

Abstract

To provide an integrated two-color vehicular lighting device that includes a vehicular lighting module and a vehicular lighting assembly.SOLUTION: A vehicular lighting module includes a substrate and a plurality of light-emitting units. The plurality of light-emitting units are installed on the substrate mutually at intervals. Each light-emitting unit has a light emission surface. Light emission surfaces of two arbitrary adjacent light-emitting units have a minimum separation distance which does not exceed 0.3 μm. The plurality of light-emitting units cooperate to emit light from a first light source and a second light source, and the chromaticity of the first light source is different from that of the second light source. A vehicular lighting assembly which reflects or refracts light from the first light source and second light source allows the first light source and the second light source to generate a first optical path region and a second optical path region. The first optical path region overlaps with the second optical path region by at least 70% or more.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] FIELD OF THE INVENTION The present invention relates to a vehicle lighting device, and more particularly to an integrated two-color vehicle lighting device. [Background technology]

[0002] To ensure good visibility for drivers in different weather conditions, vehicles are equipped with white-light vehicle lights suitable for normal weather and yellow-light vehicle lights suitable for bad weather. However, because existing vehicle lighting devices only emit light of a single chromaticity, vehicles must be equipped with white-light lighting devices and yellow-light lighting devices, respectively, and must be able to switch between the two colors. Furthermore, the space available on a vehicle for installing vehicle lighting is limited, and if a white-light lighting device and a yellow-light lighting device are installed simultaneously on a vehicle, the maximum brightness of the white or yellow light emitted from the vehicle will be significantly lower than the maximum brightness when two white-light lighting devices or two yellow-light lighting devices are installed, which affects driving safety.

[0003] Therefore, the inventors believed that the above-mentioned problems could be improved, and after extensive research involving the application of scientific principles, they proposed the present invention, which rationally and effectively improves the above-mentioned problems. Summary of the Invention [Problem to be solved by the invention]

[0004] SUMMARY OF THE INVENTION The technical problem to be solved by the present invention is to provide an integrated two-color vehicle lighting device that makes up for the shortcomings of existing technologies. [Means for solving the problem]

[0005] An embodiment of the present invention discloses an integrated two-color vehicle lighting device, which includes a vehicle lighting module and a vehicle lighting assembly. The vehicle lighting module includes a substrate and a plurality of light-emitting units. The light-emitting units are spaced apart from one another on the substrate. The light-emitting units have light-emitting surfaces, and there is a minimum separation distance of no more than 0.3 μm between the light-emitting surfaces of any two adjacent light-emitting units. Some of the light-emitting units jointly emit a first light source, and other parts of the light-emitting units jointly emit a second light source. wherein the chromaticity of the first light source is different from the chromaticity of the second light source, the chromaticity of the first light source is located within a first chromaticity gamut range in the CIE-xy chromaticity diagram, the first chromaticity gamut range being a range surrounded by the following linear relationships: X=0.31, Y=0.44, X=0.5, Y=0.38, Y=0.15+0.64X, Y=0.05+0.75X; the chromaticity of the second light source is located within a second chromaticity gamut range in the CIE-xy chromaticity diagram, the second chromaticity gamut range being surrounded by the following linear relationships: X=0.31, Y=0.44, X=0.5, Y=0.38, Y=0.15+0.64X, Y=0.05+0.75X; The enclosed range is: Y=1.290X-0.1, Y=0.138+0.58X, Y=0.44, Y=0.94-X; the vehicle lighting assembly is installed on one side of the vehicle lighting module, and the vehicle lighting assembly reflects or refracts the first and second light sources of the light emitting unit, allowing the first and second light sources to pass through the vehicle lighting assembly to generate a first light path area and a second light path area respectively, and the first light path area overlaps with the second light path area by at least 70% or more.

[0006] In summary, the integrated two-tone vehicle lighting device disclosed in the embodiment of the present invention is designed such that "the light emitting surfaces of any two adjacent light emitting units are separated by a minimum distance of no more than 0.3 μm," "the chromaticity of the first light source is within a first chromaticity range in the CIE-xy chromaticity diagram, and the chromaticity of the second light source is within a second chromaticity range in the CIE-xy chromaticity diagram," and "the first and second light sources generate a first optical path region and a second optical path region, respectively, through the vehicle lighting assembly, and the first optical path region overlaps with the second optical path region by at least 70%." This allows the integrated two-tone vehicle lighting device to selectively emit light of two different chromaticities (i.e., white light and yellow light) that comply with safety regulations, and also ensures the maximum illumination brightness that any chromaticity light can achieve on a vehicle.

[0007] In order to better understand the features and technical contents of the present invention, please refer to the following detailed description of the present invention and the accompanying drawings, which are provided for reference and explanation only and are not intended to limit the scope of the present invention. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic three-dimensional view showing an integrated two-color vehicle lighting device of the present invention; [Figure 2] 1 is another schematic three-dimensional view showing the integrated two-color vehicle lighting device of the present invention; [Figure 3] FIG. 2 is a cross-sectional view taken along the line III-III in FIG. [Figure 4] 1 is a schematic overhead view of a vehicle lighting module according to the present invention; [Figure 5] FIG. 2 is a schematic diagram of an optical path showing a first light-emitting unit of the present invention. [Figure 6] FIG. 2 is a schematic diagram of an optical path showing a second light-emitting unit of the present invention. [Figure 7] FIG. 2 is a schematic diagram showing a first chromaticity gamut range according to a first light source and a second chromaticity gamut range according to a second light source of the present invention, as shown in a CIE-xy chromaticity diagram. [Figure 8]FIG. 2 is a schematic diagram showing a first chromaticity range according to a first light source of the present invention in a CIE-xy chromaticity diagram. [Figure 9] FIG. 2 is a schematic diagram showing a second chromaticity range according to a second light source of the present invention in a CIE-xy chromaticity diagram. [Figure 10] 3 is a schematic diagram showing the light output angle of the first light-emitting unit or the second light-emitting unit of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] The following describes embodiments of the "integrated two-tone vehicle lighting device" disclosed in the present invention. Those skilled in the art can understand the merits and advantages of the present invention from the disclosure of this specification. The present invention can be implemented or applied in other different embodiments. Each detail in this specification can also be modified and changed equivalently based on various aspects or applications without departing from the spirit of the present invention. In addition, the drawings of the present invention are for simple and schematic illustration only and do not represent actual dimensions. The following embodiments will further explain the technical matters related to the present invention, but the disclosed contents do not limit the present invention. In addition, the term "or" used in this specification may include any one or more combinations of related items according to actual circumstances.

[0010] Throughout this specification, terms such as "first," "second," and "third" may be used to describe various components or signals, but it should be understood that these components or signals should not be limited by these terms. These terms are used primarily to distinguish one component from another or one signal from another. Furthermore, as used herein, the term "or" can include any one or combination of the associated listed items, where appropriate.

[0011] Furthermore, in the following description, when a particular figure is referred to or illustrated as a particular figure, this is intended to emphasize that the relevant content described in the following description is primarily shown in that particular figure, and does not mean that the following description can refer only to that particular figure.

[0012] Please refer to Figures 1 to 10. This embodiment provides an integrated two-color vehicle lighting device 100. As shown in Figures 1 to 3, the integrated two-color vehicle lighting device 100 includes a vehicle lighting module 1 and a vehicle lighting assembly 2 installed on the side of the vehicle lighting module 1. The integrated two-color vehicle lighting device 100 selectively emits first and second light sources of different chromaticities through the vehicle lighting module 1, and can irradiate the first and second light sources in a predetermined direction through the vehicle lighting assembly 2. This allows a driver (or an on-board computer) to select the first light source or the second light source as a driving light source for the vehicle based on weather conditions.

[0013] In other words, any vehicle lighting device other than one vehicle lighting module 1 that can emit light sources of two different chromaticities is not the integrated two-color vehicle lighting device 100 of the present invention. Next, each component of the integrated two-color vehicle lighting device 100 and their connection relationships will be described.

[0014] 1 to 3, the vehicle lighting module 1 includes a substrate 11 and a plurality of light emitting units (i.e., 12A and 12B in FIG. 4) installed on the substrate 11. Here, in this embodiment, the substrate 11 is connected to a connecting line (not shown) through its interface, so that the plurality of light emitting units can receive power and control signals and be controlled.

[0015] As shown in FIGS. 4 and 10, the plurality of light emitting units in this embodiment are: top surface The light emitting diodes are arranged on the substrate 11 at intervals from each other, i.e., top surfaceEach of the light emitting units has a light emitting surface (i.e., SA and SB in FIG. 4). Furthermore, there is a minimum separation distance DL of not more than 0.3 μm between the light emitting surfaces of any two adjacent light emitting units, and some of the light emitting units can jointly emit the first light source, and another part of the light emitting units can jointly emit the second light source, so that the light emitting positions of the first and second light sources are aligned.

[0016] The chromaticity of the first light source of the integrated two-color vehicle lighting device 100 must be different from the chromaticity of the second light source, and in this embodiment, the first and second light sources are described as white light and yellow light, respectively. Therefore, some of the light-emitting units are selected as white light-emitting diodes and are defined as first light-emitting units 12A, and the first light-emitting units 12A can emit a first light ray WL of white light from their light-emitting surfaces (as shown in FIG. 5). Another part of the light-emitting units are selected as yellow light-emitting diodes and are defined as second light-emitting units 12B, and the second light-emitting units 12B can emit a second light ray YL of yellow light from their light-emitting surfaces (as shown in FIG. 6).

[0017] In practical application, the first light beams WL emitted by the first light emitting units 12A can jointly form the first light source, i.e., the first light source is composed of white light beams with similar or equal chromaticity, and the second light beams YL emitted by the second light emitting units 12B can jointly form the second light source, i.e., the second light source is composed of yellow light beams with similar or equal chromaticity, but the present invention is not limited thereto.

[0018] For example, the second light beams YL emitted by the second light-emitting units 12B may be combined with the first light beam WL emitted by at least one of the first light-emitting units 12A to form the second light source, i.e., the second light source is composed of yellow light beams and white light beams with large chromaticity difference through light mixing.

[0019] As shown in FIGS. 7 to 9, the chromaticity of the first light source is located within a first chromaticity gamut range G1 in the CIE-xy chromaticity diagram, and the first chromaticity gamut range G1 is an area surrounded by the following linear relationships: X=0.31, Y=0.44, X=0.5, Y=0.38, Y=0.15+0.64X, Y=0.05+0.75X, that is, the first chromaticity gamut range G1 is a hexagonal area surrounded by six straight lines (as shown in FIGS. 7 and 8). Furthermore, the chromaticity of the second light source is located within a second chromaticity gamut range G2 in the CIE-xy chromaticity diagram, and the second chromaticity gamut range G2 is an area surrounded by the following linear relationships: Y=1.290X-0.1, Y=0.138+0.58X, Y=0.44, Y=0.94-X, that is, the second chromaticity gamut range G2 is a rectangular area surrounded by four straight lines (as shown in Figures 7 and 9).

[0020] Please refer to Figures 4 to 6 again. The vehicle lighting assembly 2 is installed on the side of the vehicle lighting module 1, and the vehicle lighting assembly 2 reflects or refracts the first and second light sources of the light emitting unit, so that the first and second light sources generate a first optical path region and a second optical path region, respectively, through the vehicle lighting assembly 2, and the first optical path region overlaps with the second optical path region by at least 70% or more.

[0021] For ease of explanation, the vehicle lighting assembly 2 is defined as having a length direction AX, a width direction AY perpendicular to the length direction AX, and a height direction AZ perpendicular to the length direction AX and the width direction AY. Here, the length direction AX is a direction on both sides shown in Fig. 3 in this embodiment, and is approximately parallel to the light emission paths of the first light source and the second light source. Next, each component of the vehicle lighting assembly 2 and its connection relationship will be described.

[0022] 1 to 3 again, the vehicle lighting assembly 2 in this embodiment includes a reflector 21, a light pattern adjuster 22, and a collimator lens 23. Here, the reflector 21 has a curved surface CS, which faces the substrate 11, and in an area where the curved surface CS (along the height direction AZ) is orthogonally projected onto the substrate 11, the plurality of light emitting units cover the area projected onto the area of ​​the substrate 11, so that the first light source and the second light source are reflected by the reflector 21. That is, a portion of the curved surface CS covers the vehicle lighting module 1 to process the reflected light.

[0023] The light pattern adjuster 22 is installed on the side of the substrate 11, a part of the light pattern adjuster 22 is covered by an area where the curved surface CS (along the height direction AZ) is orthogonally projected onto the substrate 11, and the light pattern adjuster 22 can block a part of the first light source and the second light source reflected by the reflector 21. In other words, another part of the curved surface CS also covers the light pattern adjuster 22.

[0024] Preferably, the light pattern adjuster 22 has a C-shaped cross section along the width direction AY and has a center of curvature (not shown), which is located on the side of the light pattern adjuster 22 facing the collimator lens 23. This allows the light pattern adjuster 22 to swing by changing the position of the center of curvature in the height direction AZ and the length direction AX, thereby blocking part of the first light source and part of the second light source and can be used to correct the light type of the collimator lens 23.

[0025] 5 and 6, the collimator lens 23 is located on a side away from the vehicle lighting module 1 from the light pattern adjuster 22 (along the length direction AX), and the reflector 21 is not located within an orthogonal projection along the height direction AZ. The collimator lens 23 refracts the first light source and the second light source reflected by the reflector 21, and covers the path toward the light pattern adjuster 22 and the vehicle lighting module 1 so that the first light source and the second light source are finally irradiated onto a predetermined area.

[0026] In this case, when the first light source and the second light source finally illuminate a predetermined area, the chromaticity is kept within the first chromaticity range G1 and the second chromaticity range G2. plating A layer (not shown) is provided, and the aluminum plating The reflectance of the layer is preferably between 80% and 90%, and the transmittance of the collimator lens 23 is preferably between 85% and 95%, and the refractive index of the collimator lens 23 is between 1.3 and 1.6.

[0027] It is particularly important to emphasize that, in reality, it is impossible to overlap the completely identical optical paths between the multiple light-emitting units emitting yellow and white light. Furthermore, when the yellow and white light rays are reflected, refracted, or optically adjusted through the vehicle lighting assembly 2, the energy of the light source (i.e., the first light source or the second light source) that is ultimately illuminated on the road may be affected, resulting in the chromaticity of the light source not meeting safety standards.

[0028] Therefore, the minimum separation distance DL between the plurality of light emitting units of the present invention is designed not to exceed 0.3 μm, so that the first light source and the second light source emitted from the plurality of light emitting units can be closely spaced or concentrated, and the first light source and the second light source generate the first light path region and the second light path region, respectively, through the vehicle lighting assembly 2, with an overlap range of at least 70% therebetween. Furthermore, by the above-mentioned design of the "minimum separation distance DL" between the first light source and the second light source and "there is an overlap range of at least 70% therebetween," the chromaticity of the first light source and the second light source are further designed to be limited within the first chromaticity range and the second chromaticity range, so that when the energy-affected first light source and the second light source finally leave the vehicle lighting assembly 2, each chromaticity meets the safety standard.

[0029] Preferably, to ensure that the first light source and the second light source comply with safety standards, the first light emitting units 12A are arranged on the substrate 11 closer to the collimator lens 23 in the width direction AY, and the second light emitting units 12B are arranged on the substrate 11 farther from the collimator lens 23 in the width direction AY. In other words, as shown in FIG. 4 , the first light emitting units 12A and the second light emitting units 12B are arranged in a matrix (e.g., a 3×2 matrix), with the first light emitting units 12A located in a first row (e.g., the first light emitting units 12A are located at M11, M12, and M13), and the second light emitting units 12B located in a second row (e.g., the second light emitting units are located at M21, M22, and M23), but the present invention is not limited thereto. For example, in other embodiments not shown, the plurality of first light-emitting units 12A and the plurality of second light-emitting units 12B may also be arranged in an interlaced configuration (e.g., the plurality of first light-emitting units 12A are located at M11, M22, and M13, and the plurality of second light-emitting units 12B are located at M21, M12, and M23).

[0030] 5, 6, and 10, the first light-emitting units 12A are aligned in accordance with the relative positional relationship between the reflector 21, the light pattern adjuster 22, and the collimator lens 23. is the The critical values ​​θ1 and θ2 of the exit angles of the light beams emitted from the light exit surface SA of the first second light-emitting unit 12B are between 80 degrees and 150 degrees. is the The critical values ​​θ1 and θ2 of the output angles of the light beams emitted from the second light output surface SB are also between 80 degrees and 150 degrees. Here, θ1 is the critical value of the minimum output angle, and θ2 is the critical value of the maximum output angle. Furthermore, between each of the first light sources and the curved surface CS, there is an incident angle (i.e., 75 degrees) that does not exceed 1 / 2 of the output angle, and between each of the second light sources and the curved surface CS, there is also an incident angle (i.e., 75 degrees) that does not exceed 1 / 2 of the output angle.

[0031] [Beneficial Effects of the Embodiments of the Invention] In general, the integrated two-color vehicle lighting device disclosed in the embodiment of the present invention is designed such that "the light emitting surfaces of any two adjacent light emitting units are separated by a minimum distance of no more than 0.3 μm," "the chromaticity of the first light source is within a first chromaticity range in the CIE-xy chromaticity diagram, and the chromaticity of the second light source is within a second chromaticity range in the CIE-xy chromaticity diagram," and "the first light source and the second light source generate a first optical path region and a second optical path region, respectively, through the vehicle lighting assembly, and the first optical path region overlaps with the second optical path region by at least 70%." This allows the device to selectively emit light of two different chromaticities (i.e., white light and yellow light) that meet safety standards, and also ensures the maximum illumination brightness achievable in a vehicle for both chromaticities.

[0032] The above disclosure is merely a preferred embodiment of the present invention, and does not limit the scope of the claims of the present invention. Therefore, all equivalent technical modifications made based on the contents of the specification and accompanying drawings of the present invention shall be included in the scope of the claims of the present invention. [Explanation of symbols]

[0033] 100 Integrated dichroic car lighting system 1. Car lighting module 11 Circuit Board 12A First Light-Emitting Unit SA No. 1 Light exit surface 12B Second light-emitting unit SB Second light exit surface 2 Car lighting assembly 21 Reflector 22 Light pattern adjuster 23 Collimator lens DL Minimum separation distance G1 First chromaticity range G2 Second chromaticity range AX length direction AY width direction AZ height direction CS curved surface WL First Ray YL Second Ray θ1, θ2 Light output angle threshold

Claims

1. 1. An integrated bi-color vehicle lighting device comprising a vehicle lighting module and a vehicle lighting assembly, The vehicle lighting module includes a substrate and a plurality of light emitting units; The plurality of light emitting units are disposed on the substrate at intervals, each light emitting unit having a light emitting surface, and the light emitting surfaces of any two adjacent light emitting units are spaced apart by a minimum distance of no more than 0.3 μm, and a portion of the plurality of light emitting units jointly emit a first light source, and another portion of the plurality of light emitting units jointly emit a second light source; the chromaticity of the first light source is different from the chromaticity of the second light source, the chromaticity of the first light source is located within a first chromaticity region range in a CIE-xy chromaticity diagram, the first chromaticity region range being a range surrounded by straight lines of a plurality of relational expressions: X=0.31, Y=0.44, X=0.5, Y=0.38, Y=0.15+0.64X, Y=0.05+0.75X; the chromaticity of the second light source is located within a second chromaticity region range in the CIE-xy chromaticity diagram, the second chromaticity region range being a range surrounded by straight lines of a plurality of relational expressions: Y=1.290X-0.1, Y=0.138+0.58X, Y=0.44, Y=0.94-X; The vehicle lighting assembly is installed on one side of the vehicle lighting module, and the vehicle lighting assembly reflects or refracts the first and second light sources of the light emitting unit, allowing the first and second light sources to pass through the vehicle lighting assembly and generate a first light path area and a second light path area, respectively, and the first light path area overlaps with the second light path area by at least 70% or more; The vehicle lighting assembly includes a reflector, a light pattern adjuster, and a collimator lens; the reflector has a curved surface facing the substrate, an area orthogonally projected by the curved surface onto the substrate covers projected areas of the plurality of light emitting units, and the first light source and the second light source are reflected by the reflector; the light pattern adjuster is installed on one side of the substrate, a portion of the light pattern adjuster is covered by an area where the curved surface is orthogonally projected onto the substrate, and the light pattern adjuster can block a portion of the first light source and the second light source reflected by the reflector; the collimator lens is located on a side away from the light pattern adjuster, i.e., a side away from the vehicle lighting module, the collimator lens covers the light pattern adjuster and the vehicle lighting module along a path of an orthogonal projection of the reflector, and the collimator lens can refract the first light source and the second light source reflected by the reflector, the transmittance of the collimator lens is between 85% and 95%, and the refractive index of the collimator lens is between 1.3 and 1.6; An integrated two-color vehicle lighting device characterized by the above.

2. 2. The integrated two-color vehicle lighting device according to claim 1, wherein a portion of the plurality of light-emitting units is defined as a first light-emitting unit emitting a first light ray, a top surface of the first light-emitting unit is the light-emitting surface, the first light-emitting unit emits the first light ray through the light-emitting surface, and the plurality of first light rays are limited to white light, and collectively form the first light source; and another portion of the plurality of light-emitting units is defined as a second light-emitting unit emitting a second light ray, a top surface of the second light-emitting unit is the light-emitting surface, the second light-emitting unit emits the second light ray through the light-emitting surface, and the plurality of second light rays are limited to yellow light, and collectively form the second light source.

3. 2. The integrated two-color vehicle lighting device according to claim 1, wherein a portion of the plurality of light-emitting units is defined as a first light-emitting unit emitting a first light ray, a top surface of the first light-emitting unit is the light-emitting surface, the first light-emitting unit emits the first light ray through the light-emitting surface, the plurality of first light rays are limited to white light, and a portion of the first light rays jointly form the first light source; and another portion of the plurality of light-emitting units is defined as a second light-emitting unit emitting a second light ray, a top surface of the second light-emitting unit is the light-emitting surface, the second light-emitting unit emits the second light ray through the light-emitting surface, the plurality of second light rays are limited to yellow light, and a portion of the first light rays jointly form the second light source with at least one of the first light rays.

4. 4. The integrated two-color vehicle lighting device according to claim 2 or 3, wherein the vehicle lighting assembly has a length direction and a width direction perpendicular to the length direction, and a plurality of the first light-emitting units are arranged on one side of the substrate along the width direction, and a plurality of the second light-emitting units are arranged on the other side of the substrate along the width direction.

5. 4. The integrated two-color vehicle lighting device according to claim 2 or 3, wherein a critical value of an exit angle of a light beam emitted from the first light-emitting unit through a first light-emitting surface of the first light-emitting unit is between 80 degrees and 150 degrees, and a critical value of an exit angle of a light beam emitted from the second light-emitting unit through a second light-emitting surface of the second light-emitting unit is between 80 degrees and 150 degrees.

6. 2. The integrated two-color vehicle lighting device according to claim 1, wherein the cross section of the light pattern adjuster is C-shaped and has a center of curvature, the center of curvature being located on a side of the light pattern adjuster facing the collimator lens.

7. 2. The integrated two-color vehicle lighting device of claim 1, wherein an angle of incidence between each of the first light sources and the curved surface does not exceed 75 degrees, and an angle of incidence between each of the second light sources and the curved surface also does not exceed 75 degrees.

8. 2. The integrated two-color vehicle lighting device according to claim 1, wherein the reflector has an aluminum plating layer on the curved surface, and the reflectance of the aluminum plating layer is between 80% and 90%.

Images