Integrated two-color vehicular lighting device

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

[0002] In order to ensure that drivers have good visibility under different weather conditions, vehicles are equipped with white light vehicle lighting suitable for normal weather and yellow light vehicle lighting suitable for bad weather. However, since 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 have the function of switching between two colors of lighting. In addition, the space in a vehicle for installing vehicle lighting is limited, and when 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 is obviously 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 PRESENT EMBODIMENT 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 the existing technology. [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 each other on the substrate. The light-emitting units have light-emitting surfaces, and there is a minimum separation distance between the light-emitting surfaces of any two adjacent light-emitting units that is not greater than 0.3 μm. A portion of the light-emitting units jointly emits a first light source, and another portion of the light-emitting units jointly emits 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 range in the CIE-xy chromaticity diagram, and the first chromaticity range is a range surrounded by a plurality of linear relational expressions as follows: 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 range in the CIE-xy chromaticity diagram, and the second chromaticity range is surrounded by a plurality of linear relational expressions as follows: The surrounded ranges are: 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 output surfaces of any two adjacent light emitting units have a minimum separation distance of no more than 0.3 μm between them," "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 light path region and a second light path region, respectively, through the vehicle lighting assembly, and the first light path region overlaps with the second light path region by at least 70%." This integrated two-tone vehicle lighting device can selectively emit light of two different chromaticities (i.e., white light and yellow light) that comply with safety regulations, and can ensure the maximum illumination brightness that any chromaticity of light can achieve in a vehicle.

[0007] In order to make the features and technical contents of the present invention more readily apparent, reference is made 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 description of the drawings]

[0008] [Figure 1] 1 is a schematic three-dimensional view showing an integrated two-color vehicle lighting device according to the present invention; [Diagram 2] FIG. 2 is another schematic perspective view of the integrated two-color vehicle lighting device of the present invention; [Diagram 3] FIG. 2 is a schematic cross-sectional view taken along the line III-III in FIG. [Figure 4] 1 is a schematic overhead view showing a vehicle lighting module of the present invention; [Diagram 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 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 PREFERRED EMBODIMENTS

[0009] The following describes the embodiment of the "integrated two-color vehicle lighting device" disclosed in the present invention. Those skilled in the art can understand the advantages and effects 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 be modified and changed 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 show actual dimensions. In the following embodiments, the technical matters related to the present invention will be further described, 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 and 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 Fig. 1 to Fig. 10. This embodiment provides an integrated two-tone vehicle lighting device 100. As shown in Fig. 1 to Fig. 3, the integrated two-tone vehicle lighting device 100 includes one vehicle lighting module 1 and a vehicle lighting assembly 2 installed on the side of the vehicle lighting module 1. Here, the integrated two-tone vehicle lighting device 100 can selectively emit a first light source and a second light source of different chromaticity through the vehicle lighting module 1, and irradiate the first and second light sources in a predetermined direction through the vehicle lighting assembly 2. Thus, a driver (or an on-board computer) can select the first light source or the second light source as a vehicle driving light source based on weather conditions.

[0013] In other words, any vehicle lighting device other than the one in which "one vehicle lighting module 1 can emit light sources of two different chromaticities" is not the integrated two-color vehicle lighting device 100 as indicated by 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 connection line (not shown) through its interface, so that the plurality of light emitting units can receive power and control signals and be controlled.

[0015] 4 and 10, the light emitting units in this embodiment are selected from light emitting diodes that emit light from the top surface, and are installed on the substrate 11 at intervals from each other, that is, the top surface of each light emitting unit has a light emitting surface (i.e., SA and SB in FIG. 4). Furthermore, there is a minimum separation distance DL between the light emitting surfaces of any two adjacent light emitting units that is not more than 0.3 μm, 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] In addition, the chromaticity of the first light source of the integrated two-color vehicle lighting device 100 must be different from that 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, a part of the plurality of light-emitting units is selected as a white light-emitting diode and defined as a first light-emitting unit 12A, and the first light-emitting unit 12A can emit a first light ray WL of white light from its light-emitting surface (as shown in FIG. 5). In addition, another part of the plurality of light-emitting units is selected as a yellow light-emitting diode and defined as a second light-emitting unit 12B, and the second light-emitting unit 12B can emit a second light ray YL of yellow light from its light-emitting surface (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 cooperate with the first light beam WL emitted by at least one of the first light-emitting units 12A to form the second light source, that is, the second light source is composed of yellow light and white light having 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 a region surrounded by the following straight line 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 region surrounded by six straight lines (as shown in FIGS. 7 and 8). In addition, 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 a region surrounded by a plurality of linear relational expressions as follows: 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 region 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 light path region and a second light path region through the vehicle lighting assembly 2, respectively, and the first light path region overlaps with the second light path region by at least 70%.

[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 side direction shown in FIG. 3 in this embodiment, and is approximately parallel to the light emission path 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, the curved surface CS faces the substrate 11, and in the 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 substrate 11, so that the first light source and the second light source are reflected by the reflector 21. That is, a part 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. Thereby, the light pattern adjuster 22 can be swung by changing the position of the center of curvature in the height direction AZ and the length direction AX, thereby blocking a part of the first light source and a 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 away from the light pattern adjuster 22 (along the length direction AX) and is not located within the orthogonal projection of the reflector 21 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 to a predetermined area.

[0026] In order to keep the chromaticity within the first chromaticity range G1 and the second chromaticity range G2 when the first light source and the second light source are finally illuminated on a predetermined area, the reflector 21 has an aluminum layer (not shown) on the curved surface CS, and the reflectance of the aluminum layer is preferably between 80% and 90%. Also, 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 should be particularly emphasized that in reality, it is impossible to completely overlap the same optical paths between the multiple light emitting units emitting yellow and white light rays. Furthermore, when the yellow and white light rays are reflected, refracted, or modulated through the vehicle lighting assembly 2, the energy of the light source (i.e., the first light source or the second light source) finally illuminated on the road may be affected, resulting in the chromaticity of the light source not meeting the safety standard.

[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, the first light source and the second light source emitted from the plurality of light-emitting units can be closely 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, and there is an overlapping range of at least 70% between them. Furthermore, by the design of the "minimum separation distance DL" of the first light source and the second light source described above and "there is an overlapping range of at least 70% between the first light path region and the second light path region," the chromaticity of the first light source and the chromaticity of the second light source are further designed to be limited within the first chromaticity range and the second chromaticity range, so that when the first light source and the second light source, whose energy is affected, finally leave the vehicle lighting assembly 2, each chromaticity meets the safety standard.

[0029] Preferably, in order to ensure that the first light source and the second light source are closer to the safety standard, the first light emitting units 12A are arranged on the substrate 11 near the collimator lens 23 along the width direction AY, and the second light emitting units 12B are arranged on the substrate 11 farther from the collimator lens 23 along 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), the first light emitting units 12A are 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 are 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 manner (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 critical values ​​θ1 and θ2 of the light output angle of the light beam emitted from the first light output surface SA of each of the first light-emitting units 12A are between 80 degrees and 150 degrees, and the critical values ​​θ1 and θ2 of the light output angle of the light beam emitted from the second light output surface SB of each of the second light-emitting units 12B are also between 80 degrees and 150 degrees, in accordance with the relative positional relationship of the reflector 21, the light pattern adjuster 22, and the collimator lens 23. Here, θ1 is the critical value of the minimum light output angle, and θ2 is the critical value of the maximum light 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 light 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 light 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 output surfaces of any two adjacent light emitting units have a minimum separation 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 integrated two-color vehicle lighting 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 that can be achieved in a vehicle with either chromaticity of light.

[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 Substrate 12A First Light Emitting Unit SA Second 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. 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, the light emitting units have light emitting surfaces, and there is a minimum separation distance between the light emitting surfaces of any two adjacent light emitting units that is not greater than 0.3 μm, 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 range in a CIE-xy chromaticity diagram, the first chromaticity 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 range in a CIE-xy chromaticity diagram, the second chromaticity 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, so that the first and second light sources 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; 1. An integrated two-color vehicle lighting device.

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

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, 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 the critical value of the exit angle of the light beam emitted from the first light-emitting unit through the first light-emitting surface is between 80 degrees and 150 degrees, and the critical value of the exit angle of the light beam emitted from the second light-emitting unit through the second light-emitting surface is between 80 degrees and 150 degrees.

6. 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 where the curved surface is orthogonally projected onto the substrate covers the 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, and 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., on 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; 2. The integrated bi-color vehicle lighting device of claim 1.

7. 7. The integrated two-color vehicle lighting device according to claim 6, 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.

8. 7. The integrated bi-color vehicle lighting device of claim 6, 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 does not exceed 75 degrees.

9. 7. The integrated two-color vehicle lighting device as claimed in claim 6, wherein the reflector has an aluminum-plated layer on the curved surface, the reflectance of the aluminum-plated layer is between 80% and 90%, 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.

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