Lighting device and lamp

Abstract

A lighting device disclosed in an embodiment of the present invention comprises: a first light source unit; an optical member disposed to be inclined on the first light source unit; and a second light source unit disposed on one side of the optical member, wherein the second light source unit is disposed in a direction perpendicular to the optical axis of the first light source unit, the optical member transmits first light emitted from the first light source unit and reflects second light emitted from the second light source unit, and the first light and second light emitted through the optical element are each a linear light or a surface light and can be provided as overlapping three-dimensional images.

Description

Lighting devices and lamps

[0001] Embodiments of the invention relate to lighting devices and lamps.

[0002] Lighting applications include not only vehicle lighting but also backlighting for displays and signage. Light-emitting devices, such as light-emitting diodes (LEDs), offer advantages over conventional light sources such as fluorescent and incandescent lamps, including low power consumption, a near-permanent lifespan, fast response times, safety, and environmental friendliness. LEDs are used in various lighting devices, including various display devices, indoor and outdoor lights, and lamps that utilize LEDs as vehicle light sources. Compared to incandescent lamps, LEDs offer the advantage of lower power consumption. However, because the light emitted from LEDs has a small angle of incidence, there is a need to increase the light-emitting area of ​​LED lamps when using LEDs in vehicle lamps. Because of their small size, LEDs can increase the design freedom of lamps, and their near-permanent lifespan makes them economical.

[0003] Meanwhile, in line with the recent trend toward emphasizing lighting design, a variety of designs are being developed. Lighting designs that incorporate three-dimensional lighting can offer even more aesthetic appeal.

[0004] Embodiments of the invention provide a lighting device and a lamp in which two or more types of lighting are superimposed. Embodiments of the invention provide a lighting device and a lamp that emit three-dimensional lighting. Embodiments of the invention provide a lighting device and a lamp for providing a curved or flat image of an interior or exterior lamp of a vehicle as three-dimensional lighting. Embodiments of the invention provide a lighting device and a lamp that superimpose and display an image of a reflected light source and an image of a transmitted light source by an optical member that transmits and reflects light between different light source units. Embodiments of the invention improve the reliability of the lighting device and the lamp, and such a lighting device can be applied to a vehicle lamp or electronic device.

[0005] A lighting device according to an embodiment of the invention comprises: a first light source unit; an optical member arranged obliquely on the first light source unit; and a second light source unit arranged on the other side of the optical member, wherein the second light source unit is arranged in a direction perpendicular to a first optical axis of the first light source unit, the optical member transmits first light emitted from the first light source unit and reflects second light emitted from the second light source unit, and each of the first and second lights emitted through the optical member is linear light or surface light and is provided as an overlapping three-dimensional image.

[0006] According to an embodiment of the invention, the first light source unit includes a first substrate, a first light emitting unit disposed on the first substrate and having an open inner side, and a first light emitting surface disposed on the first light emitting unit. The second light source unit includes a second substrate, a plurality of second light emitting units disposed on the second substrate and spaced apart from each other in the first optical axis direction of the first light source unit, and a plurality of second light emitting surfaces disposed on each of the second light emitting units.

[0007] According to an embodiment of the invention, at least one of the first light-emitting portion and the plurality of second light-emitting portions may have different thicknesses. The length of the second light source portion may be a length in the first optical axis direction of the first light source portion and may be less than or equal to a length of an open area of ​​the first light source portion. The plurality of first light sources are spaced apart in the second optical axis direction of the second light source portion, and the second optical axis direction is orthogonal to the first optical axis direction.

[0008] According to an embodiment of the invention, the second light-emitting unit may include a 2-1 light-emitting unit, and a 2-2 light-emitting unit arranged on the inner and outer sides of the 2-1 light-emitting unit. The 2-2 light-emitting surface of the 2-2 light-emitting unit may be positioned higher than the height of the 2-1 light-emitting surface of the 2-1 light-emitting unit based on the second substrate. The surface light images of the 1st and 2nd lights may have different shapes.

[0009] According to an embodiment of the invention, a third light source unit is provided on the other side of the optical member, and the optical member can reflect third light emitted from the third light source unit. The lighting image of the lights emitted through the optical member can be displayed as at least one of a first image in which the first and second lights are superimposed and a second image in which the second and third lights are superimposed.

[0010] A lamp according to an embodiment of the invention comprises a lighting device; and a lamp having the lighting device, wherein the lighting device comprises the lighting device disclosed above, and the lamp can be applied inside or outside a vehicle.

[0011] According to embodiments of the invention, there is an effect of being able to provide various lighting designs having three-dimensional lighting. In addition, there is an effect of being able to display a three-dimensional curved image or a flat image by applying the three-dimensional lighting to an exterior lamp of a vehicle. In addition, there is an effect of being able to provide three-dimensional lighting having different colors. In addition, there is an effect of being able to display a variety of three-dimensional lighting having differences in brightness, three-dimensional lighting having differences in light-emitting surfaces, three-dimensional lighting having different colors, etc. by using a three-dimensional lighting device. In addition, there is an effect of being able to provide a three-dimensional image having area light by using a lighting device of an area light source.

[0012] According to an embodiment of the invention, there is an effect that a lighting image having various three-dimensional shapes can be provided according to shape, color, and driving method by combining at least two light sources, thereby improving the reliability of a lighting device and a lamp.

[0013] Fig. 1 is a side cross-sectional view showing a lighting device according to an embodiment of the invention.

[0014] Fig. 2 is a drawing showing a lighting image of the lighting device of Fig. 1.

[0015] Fig. 3 is a drawing showing three-dimensional lighting by the lighting device of Fig. 1.

[0016] FIG. 4 is a side cross-sectional view showing a first example of a lighting device according to an embodiment of the invention.

[0017] Figures 5 (A) and (B) are drawings showing examples of lighting images by the lighting device of Figure 4.

[0018] Fig. 6 is a side cross-sectional view showing a second example of a lighting device according to an embodiment of the invention.

[0019] Fig. 7 is a side cross-sectional view showing a third example of a lighting device according to an embodiment of the invention.

[0020] Fig. 8 is a side cross-sectional view showing a fourth example of a lighting device according to an embodiment of the invention.

[0021] FIG. 9 is a side cross-sectional view showing a fifth example of a lighting device according to an embodiment of the invention.

[0022] FIG. 10 and FIG. 11 are drawings explaining the manufacturing process of a light source unit according to an embodiment of the invention.

[0023] Fig. 12 is a drawing showing an image according to the on / off state of the light source unit of Fig. 11.

[0024] FIG. 13 and FIG. 14 are drawings showing a three-dimensional image by a lighting device according to an embodiment of the invention.

[0025] Fig. 15 is a drawing showing an example of a display by a lighting device according to an embodiment of the invention.

[0026] Fig. 16 is a drawing showing an example of a plan view of a vehicle having a lighting device of the invention.

[0027] Fig. 17 is an example of a taillight of a vehicle to which the lighting device of Fig. 16 is applied.

[0028] Hereinafter, preferred embodiments of the invention will be described in detail with reference to the attached drawings.

[0029] The technical idea of ​​the present invention is not limited to some of the embodiments described, but can be implemented in various different forms, and within the scope of the technical idea of ​​the present invention, one or more of the components between the embodiments can be selectively combined or substituted and used. In addition, the terms (including technical and scientific terms) used in the embodiments of the present invention can be interpreted as having a meaning that can be generally understood by a person of ordinary skill in the technical field to which the present invention belongs, unless explicitly and specifically defined and described, and the meaning of commonly used terms, such as terms defined in a dictionary, can be interpreted in consideration of the contextual meaning of the related technology. In addition, the terminology used in the embodiments of the present invention is for the purpose of describing the embodiments and is not intended to limit the present invention. In this specification, the singular may also include the plural unless specifically stated in the phrase, and when it is described as "A and (or at least one (or more than one) of B, C," it may include one or more of all combinations that can be combined with A, B, and C. In addition, when describing components of embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only intended to distinguish the components from other components, and the nature, order, or sequence of the components are not determined by the terms. In addition, when it is described that a component is 'connected', 'coupled', or 'connected' to another component, the component may include not only cases where the component is directly connected, coupled, or connected to the other component, but also cases where the component is 'connected', 'coupled', or 'connected' by another component between the component and the other component.Additionally, when it is described as being formed or arranged "above or below" each component, "above" or "below" includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or arranged between the two components. Furthermore, when it is expressed as "above" or "below", it can include the meaning of a downward direction as well as an upward direction based on one component.

[0030] The lighting device according to the present invention can be applied to various lamp devices requiring lighting, such as vehicle lamps, household lighting devices, or industrial lighting devices. For example, when applied to vehicle lamps, it can be applied to headlamps, side lights, turn signals, side mirror lights, fog lights, tail lights, reverse lights, brake lights, daytime running lights, vehicle interior lights, door scuffs, rear combination lamps, backup lamps, etc. The lighting device of the present invention can also be applied to indoor and outdoor advertising devices, display devices, and various types of electric vehicles, and in addition, it can be applied to all lighting-related fields or advertising-related fields that are currently developed and commercialized or can be implemented with future technological advancements.

[0031] FIG. 1 is a side cross-sectional view showing a lighting device according to an embodiment of the invention, FIG. 2 is a view showing a lighting image of the lighting device of FIG. 1, FIG. 3 is a view showing three-dimensional lighting by the lighting device of FIG. 1, FIG. 4 is a side cross-sectional view showing a first example of a lighting device according to an embodiment of the invention, FIG. 5 (A) and (B) are views showing examples of lighting images by the lighting device of FIG. 4, FIG. 6 is a side cross-sectional view showing a second example of a lighting device according to an embodiment of the invention, FIG. 7 is a side cross-sectional view showing a third example of a lighting device according to an embodiment of the invention, FIG. 8 is a side cross-sectional view showing a fourth example of a lighting device according to an embodiment of the invention, and FIG. 9 is a side cross-sectional view showing a fifth example of a lighting device according to an embodiment of the invention.

[0032] Referring to FIG. 1, a lighting device (100) according to an embodiment of the invention includes a plurality of light source units (10, 20) and an optical member (50) that transmits and reflects light emitted from the plurality of light source units (10, 20). The lighting device (100) can illuminate in the form of an overlapping image or pattern of lights emitted from different light source units (10, 20). In addition, the lighting device (100) can provide the overlapping image or pattern as interior or exterior lighting for a vehicle. In addition, the lighting device (100) can output through a curved area of ​​a lamp, a flat area, an area having a curved surface and a flat surface, or a bar area.

[0033] The plurality of light source units (10, 20) may be arranged on different planes or in directions orthogonal to each other. The plurality of light source units (10, 20) may include at least two light source units, and may include, for example, a first light source unit (10) and a second light source unit (20) arranged on different planes.

[0034] The optical member (50) may include a beam splitter, and may transmit light incident on a first path and reflect light incident on a second path. The optical member (50) may transmit the first light (L1) emitted from the first light source unit (10) and reflect the second light (L2) emitted from the second light source unit (20). The optical member (50) may be arranged in a range of 45 degrees ± 30 degrees or a range of 135 degrees ± 30 degrees with respect to the second optical axis of the second light source unit (10). The second light source unit (10) may be arranged parallel to the first optical axis of the first light source unit (10). As another example, the optical member (50) can reflect the first light (L1) emitted from the first light source unit (10) and transmit the second light (L2) emitted from the second light source unit (20). Here, the first optical axis is the central axis along which light is emitted from the first light source unit (10), and the second optical axis is the central axis along which light is emitted from the second light source unit (20).

[0035]

[0036] The first light source unit (10) can emit first light (L1) having a first color, and the second light source unit (20) can emit second light (L2) having a second color. The first color can be at least one of yellow, red, green, white, and blue. The second color can be at least one of yellow, red, green, white, and blue. The first and second colors can be the same color or different colors. The first light (L1) of the first light source unit (10) can be provided in the shape of a first image or a first pattern, and the second light (L2) of the second light source unit (20) can be provided in the shape of a second image or a second pattern.

[0037] The first and second light source units (10, 20) may each have the same or different numbers of internal light-emitting elements. The lengths of the light-emitting surfaces of the first and second light source units (10, 20) may be the same or different. The widths of the light-emitting surfaces of the first and second light source units (10, 20) may be the same or different. The first light source unit (10) may be a main light source, and the second light source unit (20) may be an auxiliary light source. Such a lighting device (100) may have one main light source and one or two or more auxiliary light sources. The two or more auxiliary light sources may be respectively positioned on a plane parallel to the optical axis of the main light source or may have a light-emitting surface parallel to the optical axis of the main light source.

[0038] The light-emitting surface of the first light source unit (10) may be flat or curved, and the light-emitting surface of the second light source unit (20) may be flat or curved. The first light (L1) has a point, line, or surface shape, and the line shape may include a straight line, a curved line, or a curved line, and the surface shape may include a circular shape, a polygonal shape, an irregular shape having a curve, an irregular shape mixed with a curve and a straight line, etc. In detail, the first and second lights (L1, L2) are linear light or surface light, and for example, one of the first and second lights (L1, L2) is linear light and the other is surface light, and both of the first and second lights (L1, L2) may provide linear light or surface light. The first and second lights (L1, L2) may have a difference in luminosity.

[0039] The first and second lights (L1, L2) may overlap on the emission side of the optical member (50) and may be provided as a lighting image toward the observer. For example, as shown in FIGS. 2 and 3, the first light (L1) may be provided as a first surface light (R1) and a second surface light (R2), and the second light (L2) may be provided as a third surface light (R3) and a fourth surface light (R4). The first surface light (R1) may be a first image or a turn-on image, and the second surface light (R2) may be provided as a second image or a turn-off image in an area between the first surface lights (R1). The third surface light (R3) may be a third image or a turn-on image, and the fourth surface light (R4) may be provided as a fourth image or a turn-off image in an area between the third surface lights (R3). The image (IM1) in which the first surface light (L1) and the second surface light (L2) are overlapped can be provided in the form in which the first to fourth surface lights (R1, R2, R3, R4) are overlapped. That is, the overlapped image (IM1) can be implemented as a three-dimensional image by the first to fourth surface lights (R1, R2, R3, R4).

[0040]

[0041] Referring to FIGS. 4 and 5, the first light source unit (10) has a first light emitting unit (12) having an open inner surface and a circular or polygonal shape, and the second light source unit (20) may have a plurality of second light emitting units (22, 23) having different heights from the upper surface of the second substrate (21). The length (D1) of the open area (14) of the first light emitting unit (12) is an inner length and may be the same as the length (D2) of the second light source unit (20). As another example, the length (D1) of the open area (14) of the first light emitting unit (12) may be smaller or larger than the length (D2) of the second light source unit (20). The length (D2) of the second light source unit (20) is the length of the first light source unit (10) in the first optical axis direction, and the inner length (D1) of the first light source unit (10) is the length of the second light source unit (20) in the second optical axis direction. As another example, the area of ​​the open area (14) of the first light emitting unit (12) may be the same as the light emitting area of ​​the second light source unit (20).

[0042] The first light-emitting unit (12) is arranged on the first substrate (11) and may have a first light-emitting surface (E1) on the emission side. The plurality of second light-emitting units (22, 23) are arranged on the second substrate (21) and may have second light-emitting surfaces (E2, E3) on the emission side. Here, the first optical axis of the first light source unit (10) is a direction perpendicular to the first light-emitting surface (E1) of the first light-emitting unit (12) or a direction perpendicular to the upper surface of the first substrate (11), and the second optical axis of the second light source unit (20) is a direction perpendicular to the second light-emitting surfaces (E2, E3) of the second light-emitting units (22, 23) or a direction perpendicular to the upper surface of the second substrate (21). In addition, the first optical axis direction is the direction in which the first light (L1) of the first light source unit (10) is emitted, and the second optical axis direction is the direction in which the second light (L2) of the second light source unit (20) is emitted. The upper surface of the first substrate (11) is the surface on which the first light emitting unit (11) is mounted, and the upper surface of the second substrate (21) is the surface on which the second light emitting unit (22, 23) is mounted.

[0043]

[0044] The first light-emitting surface (E1) of the first light-emitting portion (12) may be positioned at the same height based on the upper surface of the first substrate (11). When the first light-emitting surface (E1) emits light, the inner open area (14) may have a circular or polygonal shape. The second light-emitting surfaces (E2, E3) may be positioned at different heights based on the upper surface of the second substrate (21). Accordingly, the lights emitted through the second light-emitting surfaces (E2, E3) may have differences in brightness.

[0045] The plurality of second light-emitting parts (22, 23) include one or more 2-1 light-emitting parts (22) and one or more 2-2 light-emitting parts (23). The 2-1 light-emitting parts (22) may be arranged on the inner and outer sides of the 2-2 light-emitting parts (23). For example, the 2-2 light-emitting parts (23) may be arranged on the outer side or around the inner light-emitting part and may be arranged on the inner side of the outer light-emitting part. The 2-2 light-emitting parts (23) may include a light-emitting part arranged on the inner side of the 2-1 light-emitting part (22) and a light-emitting part arranged on the outer side. Among the second light-emitting parts (22, 23), one of the 2-1 light-emitting parts (22) may have a first thickness, and the other of the 2-2 light-emitting parts (23) may have a second thickness greater than the first thickness. A second-first light-emitting portion (22) having a first thickness may be placed between second-second light-emitting portions (23) having a second thickness. That is, adjacent second light-emitting portions (22, 23) may have different thicknesses.

[0046] The height of the second-second light-emitting surface (E3) of the second-second light-emitting portion (23) based on the upper surface of the second substrate (21) may be higher than the height of the second-first light-emitting surface (E2) of the second-first light-emitting portion (22). One or more first light-emitting portions (12) may have the first or second thickness, or may have a thickness different from the first and second thicknesses.

[0047] The first light source unit (10) emits first light (L1) through the first light-emitting surface (E1), and the second light source unit (20) emits second light (L2) through the second light-emitting surfaces (E2, E3). The first light (L1) is incident on one side of the optical member (50), and the second light (L2) is incident on the other side of the optical member (50). The optical member (50) transmits the first light (L1) having the image of the first light-emitting surface (E1) of the first light source unit (10), and reflects and emits the second light (L2) having the image of the second light-emitting surface (E2, E3) of the second light source unit (20). The propagation paths of the first and second lights (L1, L2) may be in the same direction due to the optical member (50). At this time, when viewed from the observer's side, the lighting image may be shown in the form of an image (IM2') of a virtual second light-emitting surface (E2', E3') being superimposed on the inside of the image of the first light-emitting surface (E1). Accordingly, as in (A)(B) of FIG. 5, the lighting image may be provided as an image in which images of second light-emitting surfaces (E2', E3') having different heights are superimposed on the inside of the image of the first light-emitting surface (E1). Alternatively, the lighting image may be displayed in a shape in which patterns of second light-emitting surfaces (E2', E3') having different heights are superimposed on the inside of the pattern of the first light-emitting surface (E1). In addition, when the lighting image is viewed from a different angle, for example, an oblique angle rather than the front, the images of the first light-emitting surface (E1) and the second light-emitting surfaces (E2', E3') may be provided as three-dimensional images having different heights.

[0048] FIG. 6 is a modified example of FIG. 4, wherein a plurality of second light-emitting parts (22, 23) of the second light source part (20) may have different thicknesses and a predetermined interval from each other. The adjacent second light-emitting parts (22, 23) may be spaced apart from each other in the first optical axis direction. As another example, the adjacent second light-emitting parts (22, 23) may be spaced apart from each other in the first optical axis direction that is orthogonal to the second optical axis direction. The second optical axis direction of the second light-emitting parts (22, 23) is a direction perpendicular to the second light-emitting surface (E2, E3). That is, the 2-2 light-emitting part (23) may be arranged inside the 2-1 light-emitting part (22). The thickness of the 2-2 light-emitting part (23) may be greater than the thickness of the 2-1 light-emitting part (22). The height of the 2-2 light-emitting surface (E3) of the 2-2 light-emitting portion (23) based on the upper surface of the substrate (21) may be greater than the height of the 2-1 light-emitting surface (E2) of the 2-1 light-emitting portion (22).

[0049] The optical member (50) transmits the first light (L1) having the image of the first light-emitting surface (E1) of the first light source unit (10), and reflects and emits the second light (L2) having the image of the second light-emitting surface (E2, E3) of the second light source unit (20). At this time, when viewed from the observer's side, the lighting image can be seen in the form of an image (IM3') of a virtual second light-emitting surface (E2', E3') being superimposed on the inside of the image of the first light-emitting surface (E1). Accordingly, the lighting image can be provided as an image in which images of virtual second light-emitting surfaces (E2', E3') having different heights and spaced apart from each other are superimposed on the inside of the image of the first light-emitting surface (E1). Alternatively, the lighting image can be displayed in a form in which patterns of second light-emitting surfaces (E2', E3') having different heights are superimposed on the inside of the pattern of the first light-emitting surface (E1). Here, the second light-emitting surface (E2', E3') may be provided in a shape spaced apart in the second optical axis direction orthogonal to the first optical axis of the first light source unit (10). In addition, when the lighting image is viewed from a different angle, for example, an oblique angle rather than a frontal angle, the images of the first light-emitting surface (E1) and the second light-emitting surface (E2', E3') may be provided as a three-dimensional image having different heights and a shape spaced apart from each other.

[0050]

[0051] FIG. 7 is a modified example of FIG. 4, in which a plurality of second light-emitting parts (22, 23) of the second light source part (20) are formed in a form in which unit light-emitting groups are spaced apart and may have different thicknesses. The adjacent groups of the second light-emitting parts (22, 23) may be spaced apart from each other in the first optical axis direction of the first light-emitting part (21). As another example, the unit groups of the second light-emitting parts (22, 23) may be spaced apart from each other in the first optical axis direction orthogonal to the second optical axis. Here, each of the unit groups includes at least one 2-1 light-emitting part (22) and at least one 2-2 light-emitting part (23), and the interval between the unit groups may be greater than the interval between the 2-1 light-emitting part (22) and the 2-2 light-emitting part (23) within the unit group. In addition, the adjacent unit groups may have the 2-1 light emitting parts (22) facing each other or arranged inside each other, and the 2-2 light emitting part (23) of each unit group may be arranged outside the 2-1 light emitting part (22) of each unit group.

[0052] The optical member (50) transmits the first light (L1) having the image of the first light-emitting surface (E1) of the first light source unit (10), and reflects and emits the second light (L2) having the image of the second light-emitting surface (E2, E3) of the second light source unit (20). At this time, when viewed from the observer's side, the lighting image can be seen in the form of an image (IM4') of a virtual second light-emitting surface (E2', E3') being superimposed on the inside of the image of the first light-emitting surface (E1). Accordingly, the lighting image can be provided as an image in which images of a group of virtual second light-emitting surfaces (E2', E3') having different heights and being spaced apart from each other are superimposed on the inside of the image of the first light-emitting surface (E1). Here, the group of virtual second light-emitting surfaces (E2', E3') can be provided in a shape spaced apart in a direction orthogonal to the optical axis of the first light source unit (10). In addition, when the above-mentioned lighting image is viewed from a different angle, for example, an oblique angle rather than a frontal angle, the images having the first light-emitting surface (E1) and the second light-emitting surfaces (E2', E3') can be provided as a three-dimensional image having different heights and a shape in which the unit groups are spaced apart from each other.

[0053]

[0054] FIG. 8 is a modified example of FIG. 4, wherein the first light source unit (10) may have a plurality of first light-emitting units (12A, 12B), and the second light source unit (20) may have a second light-emitting unit (24). The plurality of first light-emitting units (12A, 12B) may be spaced apart in a second optical axis direction orthogonal to the first optical axis of the first light source unit (10), and may have different thicknesses. The plurality of first light-emitting units (12A, 12B) may include a 1-1 light-emitting unit (12A) and a 1-2 light-emitting unit (12B), and the 1-2 light-emitting unit (12B) may be arranged on the outside of the 1-1 light-emitting unit (12A). The thickness of the 1-2 light-emitting unit (12B) may be thicker than the thickness of the 1-1 light-emitting unit (12A). The first-second light-emitting surface (E1B) of the first-second light-emitting portion (12B) may be higher than the height of the first-first light-emitting surface (E1A) of the first-first light-emitting portion (12A) based on the upper surface of the first substrate (11). It may be arranged on one side, both sides, or the periphery of the first-second light-emitting portion (12B) and the first-first light-emitting portion (12A). Accordingly, the light-emitting surfaces (E1A, E1B) of the first light-emitting portions (12A, 12B) may have different heights and be spaced apart from each other.

[0055] The second light emitting portion (24) of the second light source portion (20) may be provided in a triangular shape in which the center height of the second light emitting portion (24) is the highest on the upper surface of the second substrate (21) in the second optical axis direction of the second light source portion (20) and the height decreases toward both sides, and the second light emitting surface (E4) may have a shape that is inclined toward both sides of the center of the second light emitting portion (24). The inclined regions on both sides of the second light emitting surface (E4) of the second light emitting portion (24) may be connected to each other. The width of the second light emitting portion (24) in the first optical axis direction may be greater than the width of the first light emitting portions (12A, 12B) in the second optical axis direction. The width of the second light emitting surface (E4) in the first optical axis direction may be greater than the width of each of the first light emitting surfaces (E1A, E1B) in the second optical axis direction.

[0056] The optical member (50) transmits the first light (L1) having the image of the first light-emitting surface (E1A, E1B) of the first light source unit (10), and reflects and emits the second light (L2) having the image of the second light-emitting surface (E4) of the second light source unit (20). At this time, when viewed from the observer's side, the lighting image can be seen in the form of an image of a virtual second light-emitting surface (E4') being superimposed on the image of the first light-emitting surface (E1A, E1B). When the second light-emitting surface (E4) and the 1-1 light-emitting surface (E1A) are superimposed, the width of the second light-emitting surface (E4) can be greater than the width of the 1-1 light-emitting surface (E1A). Accordingly, the lighting image can be provided as an image in which an image of a virtual second light-emitting surface (E4') having different heights and being inclined is superimposed on the image of the first light-emitting surface (E1A, E1B). Here, the virtual second light-emitting surface (E4') can overlap the light-emitting surface (E1A) of the first light-emitting portion (12A) centered on the first light source portion (10) in the first optical axis direction of the first light source portion (10). When the lighting image is viewed from a different angle, for example, an oblique angle rather than a frontal view, the light-emitting surfaces (E1A, E1B, E4') can have different heights and different shapes and be provided as a three-dimensional image.

[0057]

[0058] Referring to Fig. 9, the first to third light source units (10, 20, 30) may be arranged in different directions of the optical member (60). For example, the first and second light source units (10, 20) may be arranged in directions orthogonal to each other, and the first and third light source units (10, 30) may be arranged in directions orthogonal to each other. The third light source unit (30) and the second light source unit (20) may be arranged on opposite sides with respect to the optical member (60).

[0059] The optical member (60) transmits the first light (L1) emitted from the first light source unit (10), reflects the second light (L2) emitted from the second light source unit (20), and reflects the third light (L3) emitted from the third light source unit (30). The optical member (60) is provided as a prism-shaped beam splitter and transmits or reflects the light (L1, L2, L3) in one direction. When viewed from the observer's side, the first image may be provided as an image in which the first and second lights (L1, L2) are superimposed, and the second image may be provided as an image in which the second and third lights (L2, L3) are superimposed. Accordingly, when viewed from the observer's side, the displayed image may be a first image in which the first and second lights (L1, L2) are superimposed and a second image in which the second and third lights (L2, L3) are superimposed, either simultaneously or individually. Additionally, the displayed image at an inclined angle can be provided as a stereoscopic image in which the first, second, and third lights (L1, L2, L3) are selectively superimposed.

[0060]

[0061] Figures 10 and 11 are drawings illustrating a manufacturing process of a light source unit according to an embodiment of the invention. Hereinafter, the manufacturing process of the first light source unit will be described.

[0062] As shown in (A)(B) of Fig. 10, a plurality of light-emitting elements (15) can be arranged on a first substrate (11). The plurality of light-emitting elements (15) can be arranged in M ​​rows and N columns, and N and M can be 2 or 3 or more, and N and M can be the same or different. On the first substrate (11), molding parts (16, 17) are separated using a mold (70) and molded into a plurality of light-emitting regions. Each light-emitting region can include one or more light-emitting elements (15) and a molding part (16, 17) covering the light-emitting elements (15). The molding parts (16, 17) can include a light-transmitting material such as silicone or epoxy. The molding parts (16, 17) can be defined as a resin part or a light-transmitting part. At least one or both of the molding parts (16, 17) may include a phosphor that converts a portion of the light emitted from the light emitting element (15) into a wavelength. When the molding parts (16, 17) are injection-molded and hardened, the molding die (70) is separated. (C) of Fig. 10 is a side cross-sectional view and a plan view with the mold removed, and the molding parts (16, 17), i.e., the light emitting areas, may be arranged to be spaced apart from each other. The thicknesses of the molding parts (16, 17) may be provided to be the same or different.

[0063] As shown in (D)(E) of Fig. 11, a partition wall (18) is formed on the surface of the molding portion (16, 17). The partition wall (18) may be formed on the upper surface and side surface of the molding portion (16, 17). In addition, the partition wall (18) may also fill the area between the molding portions (16, 17). The partition wall (18) may include a light-absorbing material or a light-reflecting material. Thereafter, the partition wall (18) disposed on the upper surface of the molding portion (16, 17) is removed to expose the light-emitting area. As shown in (F) of Fig. 11, a diffusion layer (19) is formed on the upper surface of the molding portion (16, 17). The diffusion layer (19) is disposed on the upper surface of the molding portion (16, 17) and may extend to the upper surface of the partition wall (18). The above diffusion layer (19) may be made of a resin material such as silicone or epoxy, to which beads such as TiO2 and SiO2 as a diffusion agent may be added. The diffusion layer (19) may be provided as a diffusion sheet such as polycarbonate. The light source unit disclosed above may be manufactured through such a manufacturing process. The diffusion layer (19) may function as a light-emitting surface of each light source unit. These light source units may be manufactured as first to third light source units.

[0064] (A) of Fig. 12 is an image when the light emitting element (15) illustrated in (F) of Fig. 11 is turned on within the light source unit (10, 20), and (B) of Fig. 12 is an image when the light emitting element (15) illustrated in (F) of Fig. 11 is not turned on within the light source unit (10, 20). That is, the light source unit (10, 20) can provide a lit image and a not lit image due to the on / off of the light emitting element as described above. In (B) of Fig. 10, the thickness of the molding portion (16, 17) can be provided to be the same or different. In (B) of Fig. 10, the upper surface of the molding portion (16, 17) can have a convex portion or a concave portion. The top view shape of the molding portion (16, 17) can include a pattern having a circular or polygonal shape. As another example, the upper surface of at least one of the molding parts (16, 17) may be formed to have a slope from one side to the other. The thickness of the light-emitting part of the first and second light source parts (10, 20) or the position of the light-emitting surface may also be adjusted. The color or intensity of light emitted from the light-emitting part of the first and second light source parts (10, 20) may be changed.

[0065] As shown in Fig. 13, the light-emitting surfaces on the lighting image can be displayed as a three-dimensional image having light-emitting surfaces of different depths, and as shown in Fig. 14, the light-emitting surfaces on the lighting image can be displayed as a three-dimensional image having light-emitting surfaces of different widths. In addition, as shown in Fig. 15, different three-dimensional images (IM-1, IM-2) can be displayed on the display unit (150) arranged on the emission side of the lighting device (100) disclosed above. Each of the three-dimensional images (IM-1, IM-2) can be an image in which the lights of the main light source and the auxiliary light source are superimposed.

[0066]

[0067] Fig. 16 is a plan view of a vehicle to which a lighting device according to an embodiment is applied, and Fig. 17 is a drawing showing an example of a taillight of the vehicle of Fig. 16.

[0068] Referring to FIGS. 16 and 17, a front lamp (2100) in a mobile or vehicle (2000) may include one or more lighting modules, and the driving timing of these lighting modules may be individually controlled to provide not only a function as a conventional headlight, but also additional functions such as a welcome light or a celebration effect when a driver opens a vehicle door. The lamp may be applied to a daytime running light, a high beam, a low beam, a fog light, or a turn signal. A tail lamp (2200) in a vehicle (2000) may be arranged as a plurality of lamp units (810, 812, 814, 816) supported by a housing. For example, the lamp units (810, 812, 814, 816) may include a first lamp unit (810) disposed on the outside, a second lamp unit (814) disposed on the inner periphery of the first lamp unit (810), and third and fourth lamp units (812, 816) disposed on the inside of the second lamp unit (814), respectively. The first to fourth lamp units (810, 812, 814, 816) may selectively apply the lighting device disclosed in the embodiment, and a red lens cover or a white lens cover may be disposed on the outside of the lighting device for the lighting characteristics of the lamp unit (810, 812, 814, 816). The lighting device disclosed in the embodiment applied to the lamp units (810, 812, 814, 816) may emit light with a uniform distribution.

[0069] The first and second lamp units (810, 814) may be provided in at least one of a curved shape, a straight shape, an angular shape, an inclined shape, or a planar shape, or a mixed structure thereof. The first and second lamp units (810, 814) may be arranged one or more times in each tail light. The first lamp unit (810) may be provided as a tail light, the second lamp unit (814) may be provided as a brake light, the third lamp unit (812) may be provided as a reverse light, and the fourth lamp unit (816) may be provided as a turn signal lamp. The structure and position of these lighting lamps may be changed.

[0070] The features, structures, effects, etc. described in the embodiments above are included in at least one embodiment of the present invention, and are not necessarily limited to just one embodiment. Furthermore, the features, structures, effects, etc. illustrated in each embodiment can be combined or modified and implemented in other embodiments by a person having ordinary skill in the art to which the embodiments pertain. Therefore, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention. In addition, although the embodiments have been described above, these are merely examples and do not limit the present invention. Those having ordinary skill in the art to which the present invention pertains will appreciate that various modifications and applications not illustrated above are possible without departing from the essential characteristics of the embodiments. For example, each component specifically shown in the embodiments can be modified and implemented. In addition, the differences related to such modifications and applications should be interpreted as being included in the scope of the present invention defined in the appended claims.

Claims

1. First light source; An optical member arranged at an angle on the first light source; and It includes a second light source unit arranged on the other side of the optical member, The second light source unit is arranged in a direction perpendicular to the first optical axis of the first light source unit, The optical member transmits the first light emitted from the first light source unit and reflects the second light emitted from the second light source unit. A lighting device in which each of the first and second lights emitted through the above optical member is a linear light or a surface light and is provided as a superimposed three-dimensional image.

2. A lighting device according to claim 1, wherein the first light source unit includes a first substrate, a first light emitting unit disposed on the first substrate and having an open inner side, and a first light emitting surface on the first light emitting unit.

3. In the second paragraph, the second light source unit includes a second substrate, a plurality of second light emitting units arranged on the second substrate and spaced apart in the first optical axis direction of the first light source unit, and a plurality of second light emitting surfaces arranged on each of the second light emitting units.

4. A lighting device in the third paragraph, wherein at least one of the first light-emitting portion and the plurality of second light-emitting portions have different thicknesses.

5. A lighting device in the third paragraph, wherein the length of the second light source unit is the length in the first optical axis direction of the first light source unit and is less than or equal to the length of the open area of ​​the first light source unit.

6. In the third paragraph, the first light source unit is spaced apart in the second optical axis direction of the second light source unit in plurality, A lighting device wherein the second optical axis direction is orthogonal to the first optical axis direction.

7. In the third paragraph, the second light-emitting part is a lighting device including a 2-1 light-emitting part and a 2-2 light-emitting part arranged inside and outside the 2-1 light-emitting part.

8. In the 7th paragraph, a lighting device in which the 2-2 light-emitting surface of the 2-2 light-emitting unit is positioned higher than the height of the 2-1 light-emitting surface of the 2-1 light-emitting unit with respect to the second substrate.

9. A lighting device according to claim 1 or 2, wherein the surface light images of the first and second lights have different shapes.

10. In any one of paragraphs 1 to 3, Includes a third light source unit arranged on the other side of the optical member, A lighting device in which the optical member reflects the third light emitted from the third light source.

11. A lighting device in accordance with claim 10, wherein the lighting image of the lights emitted through the optical member is displayed as at least one of a first image in which the first and second lights are superimposed and a second image in which the second and third lights are superimposed.

12. Lighting devices; and A lamp having the above lighting device, The lighting device is any one of the lighting devices of claims 1 to 8, The above lamp is a lamp applied to the interior or exterior of a vehicle.

Images