Lighting device

Abstract

A lighting device disclosed in embodiments of the invention includes a substrate, a light source disposed on the substrate, a resin layer sealing the light source and disposed on the substrate, a lens plate disposed on the resin layer, and a light-blocking layer disposed between the resin layer and the lens plate, the light-blocking layer including a plurality of opening portions, the lens plate including a plurality of convex portions arranged along a first direction, a gap between a top surface of the light-blocking layer and the resin layer being smaller than a first gap between a bottom surface of the light-blocking layer and the lens plate, light emitted from the light source being output as a plurality of images having a prescribed shape through the resin layer, the plurality of opening portions, and the lens plate, each of the plurality of images having an elongated length in a second direction orthogonal to the first direction of the convex portions with respect to a region vertically overlapping each of the plurality of opening portions, and each of the plurality of images having a highest brightness on the plurality of openings.

Description

[0001] This application is a divisional application of application number 202080051213.0, filed on June 1, 2020, entitled "Lighting Module and Lighting Device Having Therethe". Technical Field

[0002] Embodiments of the invention relate to a lighting module and lighting device having a plurality of light sources. Embodiments of the invention relate to a lighting module, lighting device, or vehicle lamp that provides three-dimensional lighting. Background Technology

[0003] Lighting encompasses not only vehicle lighting but also backlighting for displays and signs. Compared to existing light sources such as fluorescent and incandescent lamps, light-emitting diodes (LEDs) offer advantages such as low power consumption, semi-permanent lifespan, fast response time, safety, and environmental friendliness. These light-emitting elements are used in various display devices, indoor and outdoor lighting, and other lighting applications. In recent years, lamps using LEDs and other light-emitting elements have been proposed as vehicle light sources. Compared to incandescent lamps, LEDs have the advantage of low power consumption. However, LEDs emit light as point sources, and each image in a stereoscopic illumination is matched with one LED. To achieve all multiple images, multiple LEDs are required. Furthermore, when using identical LEDs, the uniform width of each image in a stereoscopic illumination limits the display of image diversity. Therefore, when using LEDs in vehicle lighting, it is necessary to reduce the number of LEDs while achieving a variety of images. Summary of the Invention

[0004] The problem to be solved

[0005] Embodiments of the invention provide a lighting module or lighting device having openings in its emission surface. A plurality of openings in the emission surface and point light sources of uniform intensity emanating from the plurality of openings can be provided, and the point light sources emitted through the openings are provided as three-dimensional surface illumination or three-dimensional images. Embodiments of the invention provide a lighting module or lighting device for illuminating one or more three-dimensional images. Embodiments of the invention provide a lighting module or lighting device for illuminating the same or different three-dimensional images. Embodiments of the invention can provide a lighting unit, display device, or vehicle lamp having the lighting module.

[0006] Technical solutions to the problem

[0007] An embodiment of the illumination device of the invention includes: a substrate; a plurality of light sources disposed on the substrate; a resin layer covering the light sources on the substrate; a light-shielding layer having at least one opening in the resin layer; and a lens plate disposed on the light-shielding layer, the lens plate including a transmissive portion and a plurality of protrusions arranged on one or the other side of the transmissive portion, the sum of the areas of the openings being less than 50% of the area of ​​the emitting surface of light emitted through the resin layer, and the interval between the lens plate and the light-shielding layer being greater than the length of the openings. According to an embodiment of the invention, one or more light-transmitting layers may be included between the resin layer and the light-shielding layer, and the one or more light-transmitting layers may include at least one of a diffusing agent, a phosphor, and ink particles. According to an embodiment of the invention, the light-shielding layer contacts the light-transmitting layer on the light-transmitting layer, the openings provide surface illumination to the lens plate, and the sum of the areas of the openings is in the range of 1% to 25% of the top surface area of ​​the resin layer. A plurality of the protrusions are arranged along a first direction, each of the plurality of protrusions having an elongated length in a second direction orthogonal to the first direction, and the maximum width of each of the plurality of protrusions in the first direction may be greater than the height of each of the plurality of protrusions. The protrusions may have a hemispherical or polygonal shape, and the opening may have a circular, elliptical, or polygonal shape. At least a portion of the lens plate may be tilted or angled at a predetermined angle relative to the first or second direction with reference to the light-shielding layer. The lens plate may be rotated at a predetermined angle relative to a vertical axis. A first reflective layer may be disposed between the substrate and the resin layer. The protrusions include lenticular lenses, and light transmitted through the lens plate may be illuminated as stereoscopic illumination or a stereoscopic image.

[0008] Technical effect

[0009] According to embodiments of the invention, a lighting device with a three-dimensional effect can be achieved through one or more regions. Lighting devices with identical or different three-dimensional images can be realized. By tilting or rotating the three-dimensional surface lighting, various forms of three-dimensional effects can be provided. This reduces the thickness of the lighting device or module capable of producing a three-dimensional effect. Furthermore, flexible lighting modules or devices can be realized, and optical reliability can be improved. The reliability of vehicle lighting devices incorporating the aforementioned lighting modules can be improved, and the invention can be applied to lighting units, various display devices, surface light source lighting devices, or vehicle lamps. Attached Figure Description

[0010] Figure 1 This is a top view of a lighting device illustrating a first embodiment of the invention.

[0011] Figure 2 yes Figure 1Example of a side sectional view of a lighting device, A1-A1.

[0012] Figure 3 This is an explanation Figure 2 A diagram illustrating the 3D effect in a lighting fixture.

[0013] Figure 4 This is an explanation based on Figure 3 An example diagram illustrating how the size of a stereoscopic image is adjusted by the spacing between the lens plate and the lighting module in a lighting device.

[0014] Figure 5 This is a perspective view showing an example of a lens plate in a lighting device according to an embodiment of the present invention.

[0015] Figure 6 yes Figure 2 The first variation of the lighting module in the lighting device.

[0016] Figure 7 yes Figure 2 A second variation of the lighting module in a lighting device.

[0017] Figure 8 yes Figure 7 Another example of a lens plate in a lighting device.

[0018] Figure 9 It shows through Figure 8 An example of the path of light emitted from a lens plate.

[0019] Figure 10 yes Figure 8 and Figure 9 The first modified example of the lens section of the lens plate.

[0020] Figure 11 yes Figure 8 and Figure 9 The second modified example of the lens section of the lens plate.

[0021] Figure 12 yes Figure 2 Another example of a lens plate in a lighting device.

[0022] Figure 13 This is an example of a side sectional view of a lighting device according to a second embodiment of the invention.

[0023] Figure 14 yes Figure 13 The first modified example of the lens plate in the lighting device.

[0024] Figure 15 yes Figure 13 A second variation of the lens plate in a lighting device.

[0025] Figure 16This is a first variation of the lighting module in the lighting device of the first and second embodiments of the invention.

[0026] Figure 17 This is a second variation of the lighting module in the lighting device of the first and second embodiments of the invention.

[0027] Figure 18 This is an example of a top view of a lighting device according to a third embodiment of the invention.

[0028] Figure 19 yes Figure 18 Example of a side sectional view of a lighting device.

[0029] Figure 20 This is an example of a top view of a lighting device according to the fourth embodiment of the invention.

[0030] Figure 21 yes Figure 20 Example of a side sectional view of a lighting device.

[0031] Figure 22 This is an example of a side sectional view of a lighting device according to the fifth embodiment of the invention.

[0032] Figure 23 This is a variation of the first embodiment of the invention.

[0033] Figure 24 yes Figure 23 Another variation.

[0034] Figure 25 This is an example of the output image of a lighting device when the opening of an embodiment of the invention is circular.

[0035] Figure 26 Figures (A)-(E) are diagrams showing three-dimensional illumination or three-dimensional images corresponding to the rotation angle of the lens plate in the illumination device of embodiments (a plurality of embodiments) of the invention.

[0036] Figure 27 (A)-(D) are diagrams showing three-dimensional illumination or three-dimensional images corresponding to the tilting of the lens plate in the illumination device of embodiments (a plurality of embodiments) of the invention.

[0037] Figure 28 (A)-(C) are diagrams illustrating three-dimensional illumination or three-dimensional images in an illumination device according to embodiments (a plurality of embodiments) of the invention, corresponding to the rotation and tilting of the lens plate.

[0038] Figure 29 (A)-(D) are diagrams showing three-dimensional illumination or three-dimensional images corresponding to the spacing between the openings of the lens plate and the illumination module in the illumination device of the embodiments (a plurality of embodiments) of the invention.

[0039] Figure 30 It is a top view of a vehicle using a lamp with a lighting device or lighting module having an embodiment of the invention.

[0040] Figure 31 It is shown that has Figure 30 A diagram of a lighting module or lighting device. Detailed Implementation

[0041] Hereinafter, with reference to the accompanying drawings, preferred embodiments of the invention that can be readily implemented by those skilled in the art will be described in detail. However, the embodiments described in this specification and the structures shown in the accompanying drawings are merely preferred embodiments of the invention, and it should be understood that various equivalents and modifications can be substituted for them from the perspective of this application. In the detailed explanation of the operating principle of the preferred embodiments of the invention, detailed descriptions of related known functions or structures are omitted if it is determined that such detailed descriptions may unnecessarily obscure the gist of the invention. The terms used below are defined in consideration of the functions in the invention, and the meaning of each term should be interpreted based on the entire contents of this specification. The same reference numerals are used throughout the drawings for parts that perform similar functions and roles. Hereinafter, the embodiments will be clearly explained by the accompanying drawings and the description of the embodiments. In the description of the embodiments, when describing the formation of various layers (films), regions, patterns, or structures on a substrate, various layers (films), regions, plates, or patterns as "on" or "under", "on" and "under" include cases where they are formed "directly" or "indirectly" sandwiched with other layers. In addition, the reference for the upper or lower of each layer is explained based on the drawings.

[0042] <First Embodiment>

[0043] Figure 1 This is a top view showing a lighting device according to a first embodiment of the invention. Figure 2 yes Figure 1 Example of a side sectional view of a lighting device, A1-A1. Figure 3 This is an explanation Figure 2 A diagram illustrating the 3D effect in a lighting installation. Figure 4 This is an explanation based on Figure 3 An example diagram illustrating how the size of a stereoscopic image is adjusted by the spacing between the lens plate and the lighting module in a lighting device. Figure 5 This is a perspective view showing an example of a lens plate in a lighting device according to an embodiment of the present invention. Figure 6 yes Figure 2 A first variation of the lighting module in a lighting device, Figure 7 yes Figure 2 A second variation of the lighting module in a lighting device, Figure 8 yes Figure 7 Another example of a lens plate in a lighting device, Figure 9 It shows through Figure 8 An example of the path of light emitted from a lens plate. Figure 10 yes Figure 8 and Figure 9 The first deformation example of the lens portion of the lens plate, Figure 11 yes Figure 8 and Figure 9 The second modified example of the lens portion of the lens plate. Figure 12 yes Figure 2 Another example of a lens plate in a lighting device.

[0044] Reference Figures 1 to 5The lighting device 101 may include an lighting module 100 and a lens plate 70. The lighting module 100 can illuminate a point light source of uniform intensity in one direction through an opening 53 disposed on its emission surface. There may be one or more openings 53, and the number of stereoscopic images produced by the lighting device 101 can be determined according to the number of openings 53. The lens plate 70 may be disposed in the light emission direction of the lighting module 100. The lens plate 70 can emanate the incident light as a stereoscopic image or stereoscopic illumination. The stereoscopic image or stereoscopic illumination can be achieved by a contrast of light and dark with differences in the brightest and darkest areas, or by utilizing the depth or difference in brightness to provide a three-dimensional sense of form. The lighting module 100 may include: a substrate 11; light sources 21 and 22 disposed on the substrate 11; a resin layer 31 covering the light sources 21 and 22; and a light-shielding layer 51 having openings 53 on the resin layer 31. In the lighting module 100, one or more first light-transmitting layers 41 may be disposed between the light-shielding layer 51 and the resin layer 31. The first light-transmitting layer 41 may be a layer free of impurities or a layer containing at least one or all of a diffusing agent and a phosphor. Light passing through the first light-transmitting layer 41 can achieve a surface light source form with uniform intensity, but after passing through the opening 53, it can emit light as a point light source form with uniform intensity corresponding to the shape of the opening 53. The opening 53 may be disposed at least one in the region most adjacent to at least one of the light sources 21, 22, or more than one may be disposed between the upper regions of the light sources 21, 22. The thickness of the lighting module 100 is the vertical distance from the bottom surface of the substrate 11 to the light-emitting surface or the top surface of the light-shielding layer 51, which may be less than 5 mm, for example, in the range of 2 mm to 5 mm or 2.5 mm to 3 mm. Such a lighting module 100 is provided with a relatively thin thickness, so that it can be applied to flexible structures, or to lampshades or brackets with various curves or surfaces. The thickness of the lighting module 100 can be less than 200% of the thickness of the resin layer 31, for example, in the range of 150% to 200%. When the thickness of the lighting module 100 is less than this range, hot spots may occur due to the reduced light diffusion space. When the thickness of the lighting module 100 is greater than this range, the module thickness may reduce spatial limitations and design freedom. In embodiments of the invention, the thickness of the lighting module 100 is provided to be less than 5 mm, thus enabling curved structures, thereby increasing design freedom and reducing spatial limitations. The lighting module 100 can be applied to various modules or lamp devices requiring three-dimensional lighting or three-dimensional effects, such as vehicle lights, household lighting devices, and industrial lighting devices.For example, when used in lighting modules for vehicle lights, they can be applied to headlights, side marker lights, side mirror lights, fog lights, taillights, turn signal lights, backlights, stop lights, daytime running lights, interior lighting, door sills, rear combination lights, and spare lights.

[0045] <Substrate 11>

[0046] The substrate 11 may include a printed circuit board (PCB) with wiring. For example, the substrate 11 may include a resin-based PCB, a metal-core PCB, a flexible PCB, a non-flexible PCB, a ceramic PCB, or an FR-4 substrate. The substrate 11 includes a wiring layer (not shown) on its upper part, which can be electrically connected to the light sources 21 and 22. When multiple light sources 21 and 22 are arranged on the substrate 11, the multiple light sources 21 and 22 can be connected in series, parallel, or series-parallel configurations through the wiring layer. The substrate 11 can serve as a base member or support member located below the light sources 21 and 22 and the resin layer 31. The length of the first direction Y and the length of the second direction X of the substrate 11 may be the same as or different from each other; for example, the length of the first direction Y may be greater than the length of the second direction X. The first direction Y and the second direction X may be orthogonal to each other. The thickness of the substrate 11 may be less than 0.5 mm, for example, it may be in the range of 0.3 mm to 0.5 mm. Because the substrate 11 is thin, the thickness of the lighting module can be maintained without increasing it. The plurality of light sources 21, 22 in the lighting module 100 can be arranged facing each other on at least one side, two opposite sides, different sides, or all sides of the substrate 11. The substrate 11 may have connectors on a portion thereto supply power to the light sources 21, 22. The area in the substrate 11 where the connectors are disposed is an area where the resin layer 31 is not formed; this area may be a portion of the substrate 11. If the connectors are disposed on the bottom surface of the substrate 11, this area can be removed. The top view shape of the substrate 11 can be rectangular, square, or other polygonal shapes, or it can be a bar shape with a curved surface. The upper part of the substrate 11 may include components with a protective layer or a reflective layer. The protective layer or the reflective layer may include components with a solder resist material, which is a white material that reflects incident light.

[0047] <Reflective Layer 15>

[0048] The reflective layer 15 can be attached to the top surface of the substrate 11 or disposed between the substrate 11 and the resin layer 31. An adhesive layer, such as a UV adhesive, silicone, or epoxy resin, can be formed between the reflective layer 15 and the substrate 11. The reflective layer 15 can be provided as a thin film made of one of the following materials: resin material, transparent PET (polyethylene terephthalate), white PET (white polyethylene terephthalate), or silver sheet. A plurality of reflective dots can be disposed on the reflective layer 15 to reflect incident light. The plurality of reflective dots can include ink, for example, it can be printed using a material including one of TiO2, CaCO3, BaSO4, Al2O3, Silicon, and PS. In addition, the plurality of reflective dots can be configured such that the density increases as they are further away from the light sources 21 and 22, for example, the distance between the plurality of reflective dots decreases or the cross-sectional area increases. Here, the reflective layer 15 can have an open area, and the light sources 21 and 22 are disposed through the open area. The reflective layer 15 can be formed on the entire top surface of the substrate 11, or it can be disposed on a single region or a plurality of regions having a predetermined shape. As another example, a phosphor layer can be disposed in the region of the reflective layer 15. That is, a phosphor layer can be disposed between the top surface of the substrate 11 and the resin layer 31. The phosphor layer disposed at the lower part of the resin layer 31 will provide wavelength-converted light in the direction of emission.

[0049] <Resin layer 31>

[0050] The resin layer 31 can be disposed on the substrate 11. The light sources 21 and 22 can be covered or sealed on the substrate 11 by the resin layer 31. The light sources 21 and 22 can be adjacent to one or two of the side surfaces Sa and Sb of the plurality of resin layers 31. For example, the first light source 21 can be disposed adjacent to the first side surface Sa of the resin layer 31, and the second light source 22 can be disposed adjacent to the second side surface Sb, which is the opposite side of the first side surface Sa. One or more of the side surfaces of the plurality of resin layers 31 can be straight or curved, and can be the same vertical plane as the side surface of the substrate 11. The resin layer 31 can emit light through the top surface Sc and / or the side surfaces. The top surface of the resin layer 31 can be a flat horizontal surface, or can include a recessed surface or a convex surface. The resin layer 31 can be bonded to the top surface of the substrate 11, or can be bonded to the substrate 11 and the reflective layer 15. The resin layer 31 can be formed of a transparent material. The resin layer 31 can include transparent resin materials or plastic materials such as silicone or epoxy resin. The resin layer 31 can be a transparent resin material, such as UV (Ultraviolet) resin, epoxy resin, or silicone resin. The UV resin can be, for example, a resin with polyurethane acrylate oligomers as the main material (oligomer type). Since the resin layer 31 of the above composition is formed as a resin such as silicone, epoxy resin, or UV resin instead of a light guide plate, the refractive index and thickness can be easily adjusted, and adhesion characteristics, reliability, and mass production speed can be met. As another example, a diffusing agent can be added to the resin layer 31 for light diffusion. The diffusing agent can include at least one of PMMA (Poly Methyl MethAcrylate), TiO2, SiO2, Al2O3, and silicone-based agents.

[0051] <Light source 21, 22>

[0052] The plurality of light sources 21, 22 may include a plurality of first light sources 21 and / or a plurality of second light sources 22. The first light sources 21 may be adjacent to or face each other on the first side surface Sa of the resin layer 31, and the second light sources 22 may be adjacent to or face each other on the second side surface Sb of the resin layer 31. The first light sources 21 may be arranged in at least one column above the first region of the substrate 11, and the second light sources 22 may be arranged in at least one column above the second region of the substrate 11. Either the first light source 21 or the second light source 22 may be arranged in two or more columns. Figure 1 and Figure 13As shown, when the first light source 21 or the second light source 22 is configured in N×M rows and columns on the substrate 11, N can be one or more rows, and M can be one or more columns. The light sources 21 and 22 can emit light in at least one direction. For example, the first light source 21 can emit light towards the second light source 22 or the second side surface Sb direction. The second light source 22 can emit light towards the first light source 21 or the first side surface Sa direction. Each of the light sources 21 and 22 can be implemented using a side-view type package with LED chips. As another example, each of the light sources 21 and 22 can be implemented using a top-view type package or LED chips. For example, it can be implemented using flip chips, horizontal chips, or vertical chips. The package includes a body or reflective body disposed around the periphery of the LED chip, which can adjust the pointing angle of the LED chip and protect the LED chip. Light sources 21 and 22 with such package configurations can emit light in one direction or on one side. The LED chips can include at least one or all of blue LED chips, red LED chips, and green LED chips. Each package may have one LED chip or different LED chips. At least one or both of the first light source 21 and the second light source 22 may emit one or more of blue, green, red, and white light. The first light source 21 may emit light through a first surface S1, and the second light source 22 may emit light through a second surface S2. The first surface S1 may be the surface facing the second light source 22, and the second surface S2 may be the surface facing the first light source 21. The first light source 21 and the second light source 22 may be arranged facing each other or offset from each other. As another example, the light sources 21 and 22 may include OLEDs (Organic Light Emitting Diodes).

[0053] <First Transparent Layer 41>

[0054] The first light-transmitting layer 41 may be disposed on the resin layer 31. The first light-transmitting layer 41 is bonded to the top surface of the resin layer 31 in the form of a thin film, or it may be formed from a resin material. It can be bonded by the adhesive force inherent in the resin layer 31 itself without the need for additional adhesive. This reduces the need for additional adhesive application processes, avoids the use of adhesives harmful to human health, and thus reduces process and material waste. The first light-transmitting layer 41 may be removed. The first light-transmitting layer 41 can diffuse light emitted through the resin layer 31. Since certain colors may not mix when the light brightness is high, the first light-transmitting layer 41 can be mixed by diffusing light. The material of the first light-transmitting layer 41 may be a diffusing material or a light-guiding material. The first light-transmitting layer 41 may include at least one of polyester (PET) film, PMMA (Poly methyl methacrylate) material, or PC (Poly carbonate). The first light-transmitting layer 41 may be provided as a thin film of a resin material such as silicone or epoxy resin. The first light-transmitting layer 41 may include a single layer or multiple layers. The thickness of the first light-transmitting layer 41 may be thinner than the thickness of the resin layer 31. The thickness of the first light-transmitting layer 41 may be 25 μm or more, for example, in the range of 25 to 250 μm or 100 to 250 μm. Such a first light-transmitting layer 41 has the range of said thickness and can provide uniform surface illumination of the incident light. The first light-transmitting layer 41 may include one or more of a diffusing agent such as beads, a phosphor, and ink particles. The phosphor may include at least one of, for example, red, amber, yellow, green, and white phosphors. The ink particles may include at least one of metallic ink, UV ink, or curable ink. The size of the ink particles may be smaller than the size of the phosphor. The surface color of the ink particles may be one of green, red, yellow, and blue.

[0055] <Light-shielding layer 51>

[0056] The light-shielding layer 51 may be disposed on the uppermost layer of the illumination module 100. The light-shielding layer 51 may be configured to be closest to the lens plate 70 among the layers of the plurality of illumination modules 100. The light-shielding layer 51 may comprise a metallic or non-metallic material. The light-shielding layer 51 may comprise an absorbing material or a reflective material. The light-shielding layer 51 may be a layer printed on the first light-transmitting layer 41 or an additionally adhered layer. The light-shielding layer 51 may absorb or reflect visible light, infrared light, or a portion of ultraviolet light. For example, the light-shielding layer 51 may absorb or reflect wavelengths in the range of 380 nm to 800 nm. For example, the light-shielding layer 51 may be black ink or a black printed layer. The light-shielding layer 51 may be an absorbing material having carbon or carbon nanotubes, or a black resist material, or a black matrix material. As another example, the light-shielding layer 51 may be a reflective layer, for example, it may be formed of a layer having aluminum (Al) or silver (Ag) or an alloy layer having at least one of the aforementioned metals. The light-shielding layer 51 may be a single layer or multiple layers. For example, in a multi-layered configuration, it may include a first layer of black material and a second layer of reflective material, in which case the first layer may be disposed on top of the second layer. The light-shielding layer 51 can be implemented using a mask film. The thickness of the light-shielding layer 51 can be greater than 0.1 micrometers, for example, in the range of 0.1 to 5 micrometers. If the thickness of the light-shielding layer 51 is greater than this range, the improvement in light-shielding efficiency is minimal; if the thickness of the light-shielding layer 51 is less than this range, the transmittance may increase. The light-shielding layer 51 may include one or more openings 53. The opening 53 can extend vertically from the top surface to the bottom surface of the light-shielding layer 51. The top view shape of the opening 53 can be a polygon such as a square, rectangle, triangle, or pentagon, or a circular or elliptical shape, or an amorphous shape. In the opening 53, the length D1 of the first direction Y and the length D3 of the second direction X can be the same or different from each other. The plurality of openings 53 can be spaced apart from each other. The spacing between adjacent openings 53 can be greater than the lengths D1, D3 of each opening 53 in a certain direction. That is, by utilizing the spacing between the openings 53, interference between adjacent openings 53 can be minimized and the three-dimensional effect can be maximized. The plurality of openings 53 can be arranged at constant intervals in the first direction and / or the second direction, or at different intervals.

[0057] like Figure 1As shown, the openings 53 can have the same shape or different shapes. Furthermore, to improve the brightness of the light emitted from the light sources 21 and 22, one or more of the openings 53 can be positioned along the straight line traversed by the first and second light sources 21 and 22. For the linearity of light, the openings 53 of the light-shielding layer 51 can be formed from air regions or resin material. The lengths D1 and D3 of the openings 53 in a certain direction can be less than the minimum distance G1 between the light-shielding layer 51 and the lens plate 70. That is, the distance G1 > lengths D1 and D3 can be satisfied. The lengths D1 and D3 of the openings 53 in one direction can be 3 mm or more, for example, in the range of 3 mm to 10 mm, or in the range of 4 mm to 8 mm. If the lengths D1 and D3 of the openings 53 are greater than or less than the range, the stereoscopic effect may be reduced. Here, at least one or all of the plurality of openings 53 can be positioned in a region that does not overlap with the light sources 21 and 22 in the vertical direction or the light emission direction. In the light-shielding layer 51, the sum of the areas of the openings 53 can be less than 50% of the top surface area of ​​the resin layer 31, for example, it can be in the range of 1% to 50% or 1% to 25%. If the sum of the areas of a plurality of the openings 53 is greater than the range, the three-dimensional effect based on the openings 53 may be reduced. The first light-transmitting layer 41 and the light-shielding layer 51 can be in close contact with the top surface of the resin layer 31 or spaced apart from the top surface of the resin layer 31. The first light-transmitting layer 41 and the light-shielding layer 51 can be disposed in the area between the resin layer 31 and the lens plate 70.

[0058] <Lens Plate 70>

[0059] The lens plate 70 may include a transmissive portion 72 and a plurality of protrusions 71. The plurality of protrusions 71 may be disposed on one or the other side of the transmissive portion 72. The plurality of protrusions 71 are disposed on the side from which light is incident on the transmissive portion 72, or on the other side from which light exits. The protrusions 71 may include a cylindrical lens shape or a semi-cylindrical microlens shape. The transmissive portion 72 may be a member supporting the plurality of protrusions 71. The transmissive portion 72 is provided in the form of a plate or thin film, and emits incident light from the interior in the exit direction. Figure 5As shown, the transmissive portion 72 and the plurality of protrusions 71 can be integrally formed. As another example, the plurality of protrusions 71 can be attached to one or the other side of the transmissive portion 72 using a light-transmitting material. The material of the transmissive portion 72 can be resin or glass, and the resin can include thermoplastic polymers or photocurable polymers. Alternatively, the material of the transmissive portion 72 can include polycarbonate, polymethyl methacrylate, polystyrene, or polyethylene terephthalate. The material of the transmissive portion 72 can be formed from a UV-curable resin including oligomers, more specifically, a resin with polyurethane acrylate oligomers as the main material. That is, a mixture of polyurethane acrylate oligomers as synthetic oligomers and a polymer type resin as polyacrylic acid can be used. The protrusions 71 are formed from thermoplastic polymers or photocurable polymers, or they can be formed from the same material as the transmissive portion 72. Such a protrusion 71 can be formed on one or the other side of the transmissive portion 72 using a photomask process. There is no refractive index difference between the protrusion 71 and the transmissive portion 72, or the difference can be less than 0.2, thereby minimizing light loss caused by the refractive index difference. The thickness of the transmissive portion 72 can be 0.1 mm or more, for example, in the range of 0.1 mm to 10 mm or 0.1 mm to 0.25 mm. If the thickness of the transmissive portion 72 is less than the range, the three-dimensional effect may be reduced; if the thickness of the transmissive portion 72 is greater than the range, the improvement in the three-dimensional effect is minimal, and the thickness of the lighting device may increase. Figures 2 to 5As shown, a plurality of the protrusions 71 may be arranged along the first direction Y on the bottom surface (or one side) or top surface (or the other side) of the transmissive portion 72, and have a longer length in the second direction X. The protrusions 71 may be arranged along the second direction X according to the stereoscopic image of the illumination device 101, or may have a longer length in the first direction Y. The protrusions 71 may be in the shape of a handle or strip, a sinusoidal shape, or a sawtooth shape with a longer length in the second direction X. The plurality of protrusions 71 may be arranged as a combination of lens portions or unit patterns disposed on one or the other side of the transmissive portion 72. The side cross-sectional shape of the protrusions 71 in the second direction X may be hemispherical, semi-elliptical, or polygonal. The protrusions 71 may be provided in a shape capable of refracting incident light and may be components capable of forming a stereoscopic effect. The lens plate 70 can have an area equal to or greater than the top surface area of ​​the illumination module. For example, since it can be configured to extend further in a direction orthogonal to the direction of light emission from the light sources 21, 22 (e.g., the Y direction) or further in the region between the X and Y directions, the length of the plurality of protrusions 71 can be provided to be longer than the length of the illumination module. The protrusions 71 can reflect and / or refract the incident light, and can form a stereoscopic effect based on the image based on the light emitted through the other side of the transmission portion 72. The lens plate 70 can extract a point light source of uniform intensity incident through the protrusions 71 as a stereoscopic image or stereoscopic illumination. Here, in the lens plate 70, the surface opposite to the surface where the protrusions 71 are formed (e.g., the top surface or the other surface) can be a flat surface. Figure 3 As shown, the width R2 of the protrusion 71 is the maximum length in a direction orthogonal to the length direction of the protrusion 71 (e.g., a first direction), which can be 5 micrometers or more, for example, in the range of 5 micrometers to 100 micrometers or in the range of 10 micrometers to 80 micrometers. The smaller the width R2 of the protrusion 71, the higher the sharpness of the stereoscopic image. The height R1 of the protrusion 71 is the height of the protrusion, which can be less than the width R2. For example, the width R2 can be less than 0.5, for example, in the range of 0.1 to 0.48. If the height R1 of the protrusion 71 is greater than the range, the size of the unit pattern (i.e., the protrusion) becomes larger, and the stereoscopic effect may be reduced. If the height R1 of the protrusion 71 is less than the range, the difference in sharpness of the stereoscopic image may be reduced. The spacing R3 between the protrusions 71 can be 1 micrometer or more, for example, in the range of 1 micrometer to 100 micrometers or in the range of 1 micrometer to 10 micrometers. Considering the differences in sharpness between stereoscopic images or stereoscopic surface lighting, the width R2 and height R1 of the protrusion 71 can be selected within the aforementioned range. For example... Figure 3As shown, the bottom surface of the light-shielding layer 51 or the top surface Sc1 of the first light-transmitting layer 41 can emit surface illumination through the opening 53. The light L1 emitted through the opening 53 of the light-shielding layer 51 can be emitted in a point light source shape with uniform intensity. The light L2 refracted and transmitted from the curved surface 73 of the protrusion 71 of the lens plate 70 will form a stereoscopic image in the upper region Rz of the opening 53 in a direction orthogonal to the length direction of the protrusion 71. At this time, the central region Rc in the direction perpendicular to the opening 53 will have the highest brightness, and the brightness of the side regions Ra and Rb may be lower than that of the central region Rc. Utilizing this brightness difference, a stereoscopic image of the illumination device 101 can be realized. Figure 4 As shown, in the stereoscopic image on the lens plate 70, the regions Rc1 and Rc2 where the stereoscopic image is formed can be different according to the interval G1, or the shape or size of the stereoscopic image can be different according to the interval G1. The interval G1 can be implemented by a first air layer 55, which can be a region where there is a hollow space between two layers, or it can be a region where a support is attached to the periphery.

[0060] According to an embodiment of the invention, the lens plate 70 and the light-shielding layer 51 can be separated by a predetermined interval G1. The interval G1 is the distance at which light incident through the opening 53 of the light-shielding layer 51 can diffuse, and it can be a distance that allows adjustment of the size of the stereoscopic image. The interval G1 can be 5 mm or more, for example, in the range of 5 mm to 50 mm or 5 mm to 20 mm. When the interval G1 is smaller than this range, it is difficult to present the stereoscopic effect caused by brightness differences due to the small size of the stereoscopic image; when the interval G1 is larger than this range, the stereoscopic effect may decrease due to the increased size of the stereoscopic image.

[0061] The lens plate 70 can be parallel to the top surface of the light-shielding layer 51, or tilted relative to the first direction Y, or tilted relative to the second direction X, or tilted relative to both the first direction Y and the second direction X. Here, the interval between the tilt in the first direction Y and the light-shielding layer 51 can gradually narrow or widen from one end of the lens plate 70 in the first direction Y to the other end. The interval between the tilt in the second direction X and the light-shielding layer 51 can also gradually narrow or widen from one end of the lens plate 70 in the second direction X to the other end. Depending on the tilt angle or tilt direction of the lens plate 70, various stereoscopic effects can be achieved based on differences in brightness and path of light emitted through the lens plate 70; for example, a stereoscopic image can contain curvature instead of straight lines. The lens plate 70 can be rotated with reference to an axis perpendicular to the center of the first direction Y of the resin layer 31 (e.g., the Z direction). If the lens plate 70 rotates on the light-shielding layer 51, a stereoscopic image or stereoscopic illumination can be provided in the rotated form, depending on the angle of rotation. In this case, the sharpness of the stereoscopic image can be provided in a gradually decreasing form. For example, Figure 26 Images (A)-(E) show an example of the lens plate 70 being rotated on the light-shielding layer 51 or the opening 53. The stereoscopic image (Im-1) can be presented as the lens plate 70 rotated 3 to 6 degrees. Figure 26 (A), 8 to 12 degrees ( Figure 26 (B), 18 to 22 degrees ( Figure 26 (C), 35 to 45 degrees ( Figure 26 (D) or 45 to 55 degrees ( Figure 26 The shape of E). The rotation angle of such a lens plate 70 can be provided in the range of 1 degree to 180 degrees. At this time, depending on the rotation angle, the sharpness of the stereoscopic image may decrease, and it may be presented in a shape that can interfere with each other. That is, it has the effect of providing a variety of stereoscopic images or stereoscopic lighting depending on the rotation angle of the lens plate 70.

[0062] The tilt of the lens plate 70 in the second direction X can be defined as image tilting. Since the protrusion 71 is configured to have a longer length in the second direction X, the stereoscopic image or the stereoscopic illumination can be tilted. Figure 27 As shown in (A)-(D), the stereoscopic image (Im-2) can be changed into a tilted shape according to the tilt angle of the second direction X of the lens plate 70. Figure 27 (A) is a frontal image. As the tilt angle gradually increases from (B) to (D), the stereoscopic image can be presented as a shape that is tilted at an increasingly larger angle. Figure 27(A) is the case where the tilt angle is 0 degrees, (B) is the case where the tilt angle is 13 to 18 degrees, (C) is the case where the tilt angle is 18 to 22 degrees, and (D) is the case where the tilt angle is 30 to 40 degrees. The tilt angle can be 15 degrees or more, for example, in the range of 15 to 40 degrees. If it is greater than or less than this range, the image distortion may be excessive or insufficient. The invention can provide a variety of stereoscopic images or stereoscopic illumination depending on the tilt angle of the lens plate 70. Furthermore, the area with the highest brightness or the central area in each stereoscopic image (Im-2) can be the area corresponding to the opening 53. That is, it has the effect of providing a variety of stereoscopic images or stereoscopic illumination depending on the tilt angle of the lens plate 70. Here, as an example of the tilting and rotation of the lens plate 70, reference will be made to... Figure 28 . Reference Figure 3 and Figure 28 ,like Figure 28 As shown in (A), (B), and (C), the stereoscopic image (Im-3) can be presented as various stereoscopic forms of tilted and rotated images. As an example of a stereoscopic image corresponding to the interval G1 between the lens plate 70 and the light-shielding layer 51, reference will be made to... Figure 29 .like Figure 29 (A)-(D) and Figure 3 As shown, the stereoscopic image (Im-4) is the case where the interval G1 is less than 5mm. Figure 29 (A) Cases of 8mm to 12mm Figure 29 (B) Cases of 13mm to 15mm Figure 29 C) and cases of 18mm to 21mm ( Figure 29 (D) and it can be confirmed that a stereoscopic image effect can be achieved without reducing clarity when the thickness is below 12mm. The pattern of the protrusion 71 is arranged in a direction orthogonal to each other with the stereoscopic image, i.e., offset at an angle of 90 degrees, and the stereoscopic image can rotate while maintaining the angle (i.e., 90 degrees) as the pattern of the protrusion 71 rotates. The illumination device 101 of the embodiment of the invention can present a variety of stereoscopic images or stereoscopic illuminations depending on the spacing between the lens plate 70 and the light-shielding layer 51, the rotation and / or tilt angle of the lens plate 70. Such stereoscopic illumination can be provided as a longer image in a direction orthogonal to the length direction of the protrusion 71 with the opening 53 as the center, and can be provided with the highest brightness at the opening 53, with the brightness decreasing further away from the highest brightness area. That is, it can be provided as a shape in which the brightness of the stereoscopic image gradually decreases or as an image with a sense of depth, with the upper region of the opening 53 as the reference.

[0063] Figure 6 yes Figure 2 The first variation. For example... Figure 6 As shown, the light-shielding layer 51 can be disposed on the top surface of the resin layer 31. The light-shielding layer 51 can be attached to the top surface of the resin layer 31. In such a lighting device, since the first light-transmitting layer 41 is removed and the light-shielding layer 51 is disposed on the resin layer 31, the thickness of the lighting device can be reduced. For the sake of light linearity, the opening 53 of the light-shielding layer 51 can be an air area or filled with resin material.

[0064] Figure 7 yes Figure 2 The second variation. For example... Figure 7 As shown, a first light-transmitting layer 41 and a second light-transmitting layer 45 may be included between the light-shielding layer 51 and the resin layer 31. The first light-transmitting layer 41 may be disposed on the resin layer 31, and the second light-transmitting layer 45 may be disposed between the first light-transmitting layer 41 and the light-shielding layer 51. As another example, the first light-transmitting layer 41 containing a diffusing agent may be disposed on the resin layer 31, and the second light-transmitting layer 45, whether free of impurities or containing impurities, may be disposed on the first light-transmitting layer 41. At least one of the first light-transmitting layer 41 and the second light-transmitting layer 45 may contain phosphors and / or ink particles. A second air layer 55A may be disposed between the first light-transmitting layer 41 and the second light-transmitting layer 45. The second air layer 55A may be a hollow area between the two layers or an area filled with air, and a support bracket for supporting the lighting module 100 may be attached to its periphery. By disposing such a second air layer 55A on the resin layer 31, light hotspots can be reduced, and a three-dimensional effect can be achieved by the depth difference of light based on the angle or path of refraction.

[0065] like Figure 8 and Figure 9 As shown, the protrusion 71A of the lens plate 70 can be disposed on the surface from which light is emitted, i.e., the other side or the top surface. The protrusion 71A can be formed in a hemispherical, semi-elliptical, or polygonal shape. The protrusion 71A can be integrally formed with the transmission part 72A, or it can be attached to the transmission part 72A using additional lens material. The bottom surface of the lens plate 70 can be a flat surface, and the distance G1 between it and the light-shielding layer 51 can be within the range disclosed above. The light emitted through the protrusion 71A is dispersed to the left and right (Left / Right) with reference to the central axis by the emission angle refracted on the surface of the protrusion 71A, thereby forming a stereoscopic image.

[0066] like Figure 10As shown, the plurality of protrusions 71, 71A of the lens plate 70 have hemispherical curved surfaces (74: 74A, 74B, 74C), and the angle R0 between the direction Z orthogonal to the arrangement direction of the plurality of protrusions 71, 71A and the tangent lines of the curved surfaces 74A, 74B, 74C may be 5 degrees or more, for example, in the range of 5 degrees to 85 degrees. The angle R0 can be used to adjust the reflection and refraction angles of incident light or emergent light. The width R2 of the plurality of protrusions 71, 71A may be 5 micrometers or more, for example, in the range of 5 micrometers to 100 micrometers or in the range of 10 micrometers to 80 micrometers. The connecting portion 76 between the protrusions 71, 71A is a portion connecting the two protrusions 71, 71A, and the distance or interval R3 thereof may be 1 micrometer or more, for example, in the range of 1 micrometer to 100 micrometers or 1 micrometer to 10 micrometers. Such a plurality of protrusions 71, 71A may be disposed below or above the transmissive portions 72, 72A.

[0067] As Figure 11 shown, the protrusion 71B of the lens plate 70 has polygonal angled surfaces (75: 75A, 75B, 75C), and the inclination angles R01, R02 between the direction Z orthogonal to the arrangement direction of the plurality of protrusions 71B and the angled inclined surface S71 may be 5 degrees or more, for example, in the range of 5 degrees to 85 degrees. The angles R01 and R02 may be provided such that the angles become wider as the distance from the central axis Z increases (R01<R02), and the reflection and refraction angles of incident light or emergent light can be adjusted. Here, the width R4 of each central region S72 of each protrusion 71B is configured to be 10 micrometers or less, so that the reduction of light incident efficiency can be prevented. The outer inclined surface S71 of the central region S72 may be configured to have a width equal to or greater than the width of the central region S72. The internal angle between the central region S72 and the inclined surface S71 may be less than 180 degrees, for example, an obtuse angle. The central region S72 and the inclined surface S71 can be used to prevent the efficiency of incident or emergent light from decreasing. The width R2 of the plurality of protrusions 71B may be 5 micrometers or more, for example, in the range of 5 micrometers to 100 micrometers or in the range of 10 micrometers to 80 micrometers. The connecting portion 76 between the protrusions 71B is a portion connecting the two protrusions 71B, and the distance or interval R3 thereof may be 1 micrometer or more, for example, in the range of 1 micrometer to 100 micrometers or 1 micrometer to 10 micrometers. Such a plurality of protrusions 71B may be disposed below or above the transmissive portion 72B.

[0068] Referring to Figure 12A lens plate 70 is disposed on the illumination module 100. The lens plate 70 may include a transmissive portion 72C and protrusions 71C. The protrusions 71C may be arranged in a prism pattern, i.e., a triangular shape, and the inclination angle R03 between the direction Z orthogonal to the arrangement direction of the plurality of protrusions 71C and the inclined surface 77 may be 5 degrees or more, for example, in the range of 5 degrees to 85 degrees. The angle R03 can be used to adjust the reflection and refraction angles of the incident or emitted light. The spacing R5 between the vertices of the protrusions 71C may be 5 micrometers or more, for example, in the range of 5 micrometers to 100 micrometers or in the range of 10 micrometers to 80 micrometers. Such a plurality of protrusions 71C may be disposed below or above the transmissive portion 72C.

[0069] Figure 23 yes Figure 6 A variation thereof. In the lighting module, a reflective portion 15A may be disposed between the resin layer 31 and the substrate 11. Unlike the reflective portion 15 of the first embodiment, the reflective portion 15A of the variation may be disposed in a region that overlaps vertically with the opening 53 of the light-shielding layer 51, which is a part of the substrate 11. The reflective portion 15A may be formed on the emitting surface S1 of the light-emitting element 21 with a predetermined width D11, for example, the lateral and longitudinal dimensions may be formed in the range of 2mm×2mm to 15mm×15mm. Thus, light emitted from the light-emitting element 21 may pass directly through the opening 53 or be reflected by the reflective portion 15A and emitted through the opening 53. Such a structure emits a portion of the light reflected by the reflective portion 15A through the opening 53, thereby removing the direct hot spots caused by the light source 21 on the opening 53, improving the light efficiency of the stereoscopic image (multiple stereoscopic images), and preventing brightness degradation.

[0070] Figure 24 yes Figure 23 A variation thereof. A plurality of reflective portions 15A are disposed on the substrate 11, and a plurality of openings 53 can be arranged on the light-shielding layer 51 at a predetermined interval G4. The reflective portions 15A and the openings 53 can be arranged in the same direction, for example, the direction of emitted light. The predetermined interval G4 can be provided to be wider than the width (lateral width) of each protrusion 71A. Since the top surface area of ​​each reflective portion 15A can be larger than the area of ​​each opening 53, the reflective portion 15A can improve the incident efficiency of light passing through the openings 53.

[0071] <Second Embodiment>

[0072] Figure 13 This is an example of a side sectional view of a lighting device according to a second embodiment of the invention. The description of the second embodiment refers to the structure disclosed above and may include the same structure. (Refer to...) Figure 13The lighting device may include a lighting module 100A, on which the lens plate 70 is disposed. The lighting module 100A may include a plurality of light sources 25 disposed on a substrate 11. Each of the plurality of light sources 25 may be implemented using a top-view type package or LED chip. For example, it may be implemented using flip-chip, horizontal chip, or vertical chip. The package includes a body or reflective body disposed around the periphery of the LED chip, which can adjust the pointing angle of the LED chip and protect the LED chip. The light source 25 in such a package form can emit light towards the top or side. The LED chip may include at least one or all of blue LED chips, red LED chips, and green LED chips. Each package may have one LED chip or different LED chips from each other, and the plurality of light sources 25 may emit one or more of blue, green, red, and white light. The resin layer 31 may cover or seal the plurality of light sources 25. A reflective layer 15 is disposed between the resin layer 31 and the substrate 11, and the light source 25 can penetrate the reflective layer 15 and be mounted on the substrate 11. Here, when the flip chip is disposed on the substrate 11, the flip chip emits light through its top surface and four side surfaces S3, and can be reflected by the reflective layer 15. A first light-transmitting layer 41 disposed on the resin layer 31 and a second light-transmitting layer 45 disposed on the first light-transmitting layer 41 may be included, or only one of the first light-transmitting layer 41 or the second light-transmitting layer 45 may be provided. At least one of the first light-transmitting layer 41 and the second light-transmitting layer 45 may include a phosphor and / or a diffusing agent and ink particles. A light-shielding layer 51 may be disposed on the second light-transmitting layer 45, through which a point light source of uniform intensity is emitted to the lens plate 70. The light-shielding layer 51 is described with reference to the first embodiment disclosed above. At least one of the openings 53 of the light-shielding layer 51 may overlap with the light source 25 in the vertical direction. The lens plate 70 has a plurality of protrusions 71 on one or the other side of the transmission section 72 and is arranged separately from the light-shielding layer 51, so that a point light source of uniform intensity incident through the opening 53 of the light-shielding layer 51 can be illuminated as a stereoscopic illumination or stereoscopic image.

[0073] Figure 14 and Figure 15 These are the first and second modifications of the lens plate in the first and second embodiments. For example... Figure 14As shown, the lens plate 80 includes a transmissive portion 82 and a protrusion 81 located on one or the other side of the transmissive portion 82. When the protrusion 81 is positioned above the transmissive portion 82, light can exit through the curved surface 83 of the protrusion 81. The lens plate 80 may include inclined portions 82A and 82B, which are increasingly inclined in the first direction Y with respect to the center of the illumination module 100A, becoming more inclined further away from the center portion 82C. The inclined portions 82A and 82B can be configured at an angle R5 relative to a straight line horizontal to the center portion 82C. Such a lens plate 80 has regions where the interval G2 between the inclined portions 82A and 82B and the light-shielding layer 51 differs from each other in the first direction Y, and is configured on the illumination module 100A, thus enabling various stereoscopic effects depending on the interval G2. To prevent interference between stereoscopic illuminations in the central region C1 of the lens plate 80, interference between stereoscopic images can be reduced by maximizing the spacing of the openings 53 of the light-shielding layer 51 or minimizing the spacing G2 between it and the lens plate 80. Alternatively, interference between stereoscopic images can be reduced by further increasing the spacing between the protrusions 81 of the lens plate 80.

[0074] like Figure 15 As shown, the lens plate 80 includes a transmission portion 82 and a protrusion 81 located on one or the other side of the transmission portion 82. When the protrusion 81 is disposed on the upper part of the transmission portion 82, light can be emitted through the curved surface 83 of the protrusion 81. In the lens plate 80, the central portion 85A is inclined and may include a first extension 85B extending horizontally from one end of the central portion 85A and a second extension 85C extending horizontally from the other end. The length of the central portion 85A may be greater than the length of the first extension 85B and the second extension 85C. The inclination angle R6 of the central portion 85A may be an acute angle, and the first extension 85B may be disposed at a higher position than the second extension 85C. The first extension 85B and the second extension 85C are spaced apart in a first direction, and the protrusion 81 of the lens plate 80 may be arranged along the first direction Y and provided with a longer length in the second direction X. Such a lens plate has regions where the spacing G3 between it and the light-shielding layer 51 differs in the first direction Y, and is disposed on the illumination module 100A. Therefore, various stereoscopic effects can be achieved depending on the spacing G3. Here, in order to reduce interference between stereoscopic images on the center portion 85A and the second extension 85C of the lens plate 80, the spacing of the openings 53 of the light-shielding layer 51 can be maximized or the spacing G3 between it and the lens plate 80 can be reduced. Alternatively, interference between stereoscopic images can be reduced by further separating the spacing between the protrusions 81 of the lens plate 80.

[0075] Figure 16 and Figure 17 These are first and second modifications of the lighting module in the lighting device of the invention, omitting parts identical to those disclosed above, and can be selectively applied. For example... Figure 16 As shown, the lighting module 100B may include a substrate 11, a resin layer 31, a light source 25, and a first light-transmitting layer 61. The light source 25 may be provided as an LED chip or package type, for example, it may be configured in a flip-chip form. The resin layer 31 may cover or seal the light source 25. A reflective layer 15 may be disposed on the resin layer 31 and the substrate 11. The resin layer 31 may be formed of a transparent resin material and may be closely attached to the substrate 11 and the reflective layer 15. The first light-transmitting layer 61 may be disposed on the top and side surfaces of the resin layer 31. The first light-transmitting layer 61 may be provided in a form that surrounds the resin layer 31. A side portion 61A of the first light-transmitting layer 61 extends outward from the resin layer 31 and may contact the reflective layer 15 and / or the substrate 11. A diffusing agent may be added to the resin layer 31, and the first light-transmitting layer 61 may have only one or more phosphors or ink particles, or both. The phosphor or the ink particles are described above. The light-shielding layer 51 may have an opening 53 and be disposed on the first light-transmitting layer 61. The first light-transmitting layer 61 may be formed of a resin material such as silicone or epoxy resin. The lens plate 70 may selectively employ the embodiments or variations disclosed above, and the protrusion 71 may be disposed on one or the other side of the transmissive portion 72. Figure 17 As shown, a plurality of light-transmitting layers 61 and 63 can be disposed on the resin layer 31 of the lighting module. The light-transmitting layers 61 and 63 may include a first light-transmitting layer 61 disposed on the surface of the resin layer 31 and a second light-transmitting layer 63 disposed on the surface of the first light-transmitting layer 61. The first light-transmitting layer 61 may be disposed on the top surface and side surface of the resin layer 31. For example, a side portion 61A of the first light-transmitting layer 61 may extend to the lower end of the side surface of the resin layer 31. A side portion 63A of the second light-transmitting layer 63 may be disposed outside the side portion 61A of the first light-transmitting layer 61. The side portions 61A of the first light-transmitting layer 61 and the side portions 63A of the second light-transmitting layer 63 may be bonded to the substrate 11. The first light-transmitting layer 61 may be a layer containing phosphors. The second light-transmitting layer 63 may be a layer containing ink particles. The resin layer 31 may be a layer with added diffusing agents or without impurities. The first light-transmitting layer 61 and the second light-transmitting layer 63 can be formed of resin materials such as silicone or epoxy resin. By stacking a plurality of resin materials on the outside of such resin layer 31, the light source 25 can be protected from moisture.

[0076] <Third Embodiment>

[0077] Figure 18 This is an example of a top view of a lighting device according to a third embodiment of the invention. Figure 19 yes Figure 18 Example of a side sectional view of a lighting device. Sections identical to those disclosed above are omitted and may be applied selectively. See also... Figure 18 and Figure 19 The lighting device 201 may include a lighting module 100C and a lens plate 70 located on the lighting module 100C. The lighting module 100C may include a light-shielding layer 51, or the light-shielding layer 51 may be disposed between the lighting module 100C and the lens plate 70. The lighting module 100C may include a light source 21 disposed on a substrate 11, a first light-transmitting layer 33C, and a resin layer 33A covering the light source 21. The light source 21 may be a package that emits light in one direction or towards the first light-transmitting layer 33C, such as a side-view type package. As another example, the light source 21 may include an LED chip. The resin layer 33A may cover the light source 21 and may be spaced apart from the first light-transmitting layer 33C. Figure 18 As shown, the spacing D4 between the light sources 21 can be greater than the distance between the straight line connecting the light sources 21 and the first light-transmitting layer. Figure 19 The distance D2 between the incident surfaces of the first light-transmitting layer 33C is specified. The resin layer 33A can cover the top surface, front surface (e.g., exit surface), and back surface of the light source 21, and can be configured to be higher than the top surface of the light source 21. The resin layer 33A can be a resin material such as silicone or epoxy resin. The resin layer 33A and the first light-transmitting layer 33C can overlap with the light source 21 in the first direction Y. The first light-transmitting layer 33C is disposed on the substrate 11 and guides the light incident through the resin layer 33A and exits in the direction of the light-shielding layer 51. The first light-transmitting layer 33C can provide surface illumination through its top surface. A reflective layer 15 is disposed between the first light-transmitting layer 33C and the substrate 11 and can reflect the incident light. The reflective layer 15 can be spaced apart from or in contact with the resin layer 33A. The top surface of the first light-transmitting layer 33C can be configured to be lower than the top surface of the resin layer 33A. An adhesive layer 33B is disposed between the resin layer 33A and the first light-transmitting layer 33C, and can reduce light loss at the interface between the resin layer 33A and the first light-transmitting layer 33C. The adhesive layer 33B comprises a resin material such as silicone or epoxy resin, and can bond the resin layer 33A and the first light-transmitting layer 33C together. A light-shielding layer 51 can be disposed on the resin layer 33A and the first light-transmitting layer 33C. The light-shielding layer 51 can be bonded to an additional second light-transmitting layer, or can be implemented by a component with a greater thickness. A point light source of uniform intensity passing through the opening 53 is incident on the lens plate 70, and the point light source can be illuminated as stereoscopic lighting or a stereoscopic image through the protrusion 71.

[0078] <Fourth Embodiment>

[0079] Figure 20 This is an example of a top view of the lighting device according to the fourth embodiment of the invention. Figure 21 yes Figure 20 Example of a side sectional view of a lighting device. Sections identical to those disclosed above are omitted and may be applied selectively. See also... Figure 20 and Figure 21 The lighting device may include an lighting module 100D and a lens plate 70 located on the emission side of the lighting module 100D. The lighting module 100D may include a light-shielding layer 51 between the resin layer 31 and the lens plate 70. The light-shielding layer 51 is part of the structure of the lighting module 100D or may be a separate component. The thickness of the lighting module 100D may be less than 5 mm, for example, in the range of 2 mm to 5 mm. The lighting module 100D may emit light with a thin linewidth from the emission surface Sc2. The maximum length Y1 of the lighting module 100D or the maximum length of the resin layer 31 may be more than 10 mm, for example, in the range of 10 mm to 30 mm. The lighting module 100D may include a substrate 11, a light source 21, a resin layer 31, and first and second reflective layers 15 and 19. The lighting module 100D may include a light-shielding layer 51 on the emission surface Sc2 of the resin layer 31. The first reflective layer 15 may be... Figure 2 A reflective layer 19 is disposed on the top surface of the substrate 11, and a second reflective layer 19 can be disposed on the top surface of the resin layer 31. The light source 21 can be sealed by the resin layer 31. The resin layer 31 covers the light source 21 and can emit light through the front surface or the emission surface Sc2. The back surface of the resin layer 31 is the opposite side of the front surface and can be separated from the light source 21. The light source 21 can be implemented by a body 21B and an encapsulation having an LED chip 21C within the body 21B. The body 21B is a body of reflective resin material, and the LED chip 21C can be connected to the substrate 11 through a lead frame. The light source 21 may include a first surface S1 facing the emission surface Sc2 or the light-shielding layer 51. The light emitted from the light source 21 can be blue, green, red, or white. Figure 21As shown, the light sources 21 can be arranged on a straight line, or the straight line connecting the centers of the light sources 21 can gradually move away from one end of the lens plate 70 towards the other end. The first and second reflective layers 15 and 19 reflect light generated from the light sources 21, and the reflected light or light emitted from the light sources 21 illuminates the emitting surface along the resin layer 31 in a line illumination pattern. The first reflective layer 15 may include an open area 15B in which the light sources 21 are disposed. The first and second reflective layers 15 and 19 can be formed as a single layer or a multilayer structure. The second reflective layer 19 may include a material that reflects light, such as a metallic or non-metallic material. If the second reflective layer 19 is metallic, it may include a metal layer such as stainless steel, aluminum (Al), or silver (Ag); if it is non-metallic, it may include a white resin material or a plastic material. At least one of the first and second reflective layers 15 and 19 may include a white resin material or a polyester (PET) material. At least one of the first and second reflective layers 15 and 19 may include at least one of a low-reflection film, a high-reflection film, a diffuse reflection film, or a positive reflection film. The light-shielding layer 51 has an opening 53 through which linear illumination is emitted in a point light source shape with uniform intensity. The light-shielding layer 51 may contact or be separated from the emission surface of the resin layer 31. The light-shielding layer 51 may contact or be separated from the first and second reflective layers 15 and 19. The vertical length of the light-shielding layer 51 may be equal to or greater than the straight-line length from the bottom surface of the substrate 11 to the top surface of the second reflective layer 19. The light-shielding layer 51 covers the emission surface of the resin layer 31, and the opening 53 may be exposed. The resin layer 31 and the respective sides of the substrate 11 may be arranged on the same vertical plane. The respective sides of the resin layer 31 and the second reflective layer 19 may be arranged on the same vertical plane. In the light-shielding layer 51, the sum of the areas of the openings 53 may be less than 50% of the area of ​​the emission surface Sc2 of the resin layer 31, for example, in the range of 1% to 50% or in the range of 1% to 25%. If the sum of the areas of the plurality of openings 53 exceeds the range, the stereoscopic effect caused by the openings 53 may decrease. At least one of the openings 53 may be arranged in a region that does not overlap with the light source 21 in the horizontal direction or in the direction of emitted light. The lens plate 70 may include a transmissive portion 72 and a protrusion 71 located on one or the other side of the transmissive portion 72. The protrusion 71 may, for example, be arranged on one side of the lens plate 70 or on the side corresponding to the light-shielding portion.

[0080] The lens plate 70 can illuminate a point light source with a line width into three-dimensional lighting. The line width can be equal to or less than the thickness of the resin layer 31. That is, the height of the opening 53 can be equal to or less than the thickness of the resin layer 31.

[0081] <Fifth Embodiment>

[0082] Figure 22 This is an example of a side sectional view of a lighting device according to the fifth embodiment of the invention, omitting the same parts as those disclosed above, and may be selectively applied. See also... Figure 22 The lighting module may include a light-shielding portion 52 disposed between the resin layer 31 and the light-shielding layer 51. The light-shielding portion 52 may be formed of a material with a reflectivity of 30% or more and / or a transmittance of 80% or less. The light-shielding layer 51 may be bonded to the top surface of the resin layer 31 using an adhesive layer 52A, which may be disposed around the periphery of the light-shielding portion 52. The light-shielding portion 52 may be disposed in an area overlapping with the opening 53 of the light-shielding layer 51. The light-shielding portion 52 has an area larger than the opening 53, covering the entire area of ​​the opening 53. The light-shielding portion 52 is disposed on the back side of the light-emitting element 21, covering the front side (emission surface), thereby suppressing hot spots. The light-shielding portion 52 may be disposed between the opening 53 and the resin layer 31, or between the opening 53 and the light-emitting element 21. Thus, the light-shielding part 52 suppresses hot spots, and the light emitted through the light-shielding part 52 is emitted as a point light source with more uniform intensity through the opening 53. The point light source can illuminate a plurality of protrusions 71A on the lens plate 70. Thus, the point light source emitted from the opening 53 can be emitted as a stereoscopic image through two or more protrusions 71A.

[0083] and Figure 25The output image of the lighting device corresponding to the change in the shape and size of the opening 53 disclosed in (A) and the output image of the lighting device corresponding to the change in the spacing G1 between the light-shielding layer 51 and the lens plate 70 may be different. Here, a region of the opening 53 of the light-shielding layer 51 may be configured at the shortest distance from the upper end of the light-emitting element 21. The shortest distance may be less than or equal to the thickness of the resin layer 31. The position of the opening 53 of the light-shielding layer 51 may be formed within a range of 15 mm or 12 mm from the center of the light-emitting element 21 in the emission direction (Y direction, forward direction, or lateral direction) of the light-emitting element 21, and may be less than ±7.5 mm or less or less than 6 mm from the center of the light-emitting element 21 in a direction orthogonal to the emission direction (X direction, lateral direction, or longitudinal direction). The lateral or longitudinal dimensions of the opening 53 may be configured in the range of n1×m1 to n2×m2, where n1 and m1 may be 2 mm or more, and n2 and m2 may be 15 mm or less. The opening 53 can be configured one-to-one or many-to-one with each light-emitting element 21, and the stereoscopic image can be 1:n (n is 2 or more). Therefore, when the opening 53 and each light-emitting element 21 are configured one-to-one, a plurality of stereoscopic images can be achieved with the fewest light-emitting elements 21 by utilizing the shape of the opening 53 and the number of protrusions 71A. Stereoscopic images can be achieved by configuring the opening 53 and each light-emitting element 21 in a many-to-one manner and using the fewest light-emitting elements 21. The number and brightness of the output images can be adjusted by adjusting the size of the opening 53. In the embodiment disclosed, if only the lateral dimension of the opening 53 is changed from 2mm × 2mm to 10mm × 2mm, it can be confirmed that the output image will also increase in the lateral direction. Furthermore, if only the vertical dimension of the opening 53 is changed from 2mm × 2mm to 2mm × 10mm, it can be confirmed that the output image will also increase in the vertical direction and in the thickness direction. That is, if the size of the opening 53 increases in the same direction as the arrangement direction of the stereoscopic images (lateral), the image thickness increases; if the opening 53 increases in the opposite direction to the arrangement direction (vertical), the image in the center appears as a straight line. Thus, the number of stereoscopic images can be increased without using an additional diffuser plate or diffuser film between the light-shielding layer 51 and the lens plate 70. Furthermore, the number of stereoscopic images can be adjusted by increasing the number of openings. The interval G1 between the light-shielding layer 51 and the lens plate 70 is the height of the first air layer 55, which can be provided by diffusing light emitted through the opening 53. Depending on the interval G1, the area of ​​light incident on the lens plate 70 can be increased, and stereoscopic images can be output through two or more protrusions 71A.Here, the interval G1 can be provided in the range of 1mm to 20mm, and it can be confirmed that the output image becomes larger within an interval G1 from 0mm to 14mm. For example, the output image can be output in the range of 2 to 5 times or 3 to 5 times the interval G1. The output image at this time can be an area with brightness above the average value. The length of the stereoscopic image can be adjusted by adjusting such an interval G1.

[0084] Figure 30 This is a top view of a vehicle using the lighting module of an application embodiment. Figure 31 This is a diagram illustrating a vehicle lamp having the lighting module or lighting device disclosed in the embodiments. (Refer to...) Figure 30 and Figure 31 The taillight 800 of vehicle 900 may include a first lamp unit 812, a second lamp unit 814, a third lamp unit 816, and a cover 810. Here, the first lamp unit 812 may be a light source for use as a turn signal, the second lamp unit 814 may be a light source for use as a marker light, and the third lamp unit 816 may be a light source for use as a brake light, but is not limited thereto. At least one or all of the first to third lamp units 812, 814, and 816 may include the lighting device or module disclosed in the embodiments. The cover 810 may house the first to third lamp units 812, 814, and 816 and may be formed of a light-transmitting material. In this case, the cover 810 may have a bent shape according to the design of the vehicle body, and the first to third lamp units 812, 814, and 816 may realize a surface light source with a curved surface according to the shape of the cover 810. In such a vehicle light, when the lamp unit is used as a taillight, brake light, or turn signal of the vehicle, it may be used as a turn signal of the vehicle.

[0085] The features, structures, effects, etc., described in the above embodiments are included in at least one embodiment of the present invention, but are not necessarily limited to one embodiment. Furthermore, the features, structures, and effects exemplified in the various embodiments can be combined or modified and implemented by those skilled in the art for other embodiments. Therefore, it should be understood that the content related to such combinations and modifications is included within the scope of the present invention. Additionally, the above description focuses on embodiments, but these are merely examples and do not limit the present invention. It is understood that those skilled in the art can modify and apply the embodiments not exemplified above without departing from the essential characteristics of these embodiments. For example, various structural elements specifically shown in the embodiments can be modified and implemented. Furthermore, differences related to such variations and applications should be interpreted as being included within the scope of the present invention as defined in the appended claims.

Claims

1. A lighting device, in, include: substrate; A light source is disposed on the substrate; A resin layer, which seals the light source and is disposed on the substrate; Lens plate, disposed on the resin layer; and A light-shielding layer is disposed between the resin layer and the lens plate. The light-shielding layer includes a plurality of openings. The lens plate includes a plurality of protrusions arranged along a first direction. The gap between the top surfaces of the light-shielding layer and the resin layer is smaller than the first gap between the bottom surfaces of the light-shielding layer and the lens plate. The plurality of openings are spaced apart from each other. The spacing between adjacent openings is greater than the length of each opening in one direction. The light emitted from the light source passes through the resin layer, the plurality of openings, and the lens plate, and is output as a plurality of images with a predetermined shape. Each of the plurality of said images has an elongated length in a second direction orthogonal to the first direction of the protrusion, with respect to the regions that vertically overlap with each of the plurality of said openings. Each of the plurality of images has the highest brightness at the plurality of the openings.

2. The lighting device according to claim 1, wherein, Each of the plurality of protrusions has an elongated length in the second direction.

3. The lighting device according to claim 2, wherein, The plurality of the protrusions and the light-shielding layer face each other. The length of the opening in one direction is less than the minimum interval between the light-shielding layer and the lens plate. Each of the plurality of openings is an air region or is formed of a resin material.

4. The lighting device according to claim 2 or 3, wherein, The plurality of the protrusions are disposed on at least one of the bottom and top surfaces of the lens plate.

5. The lighting device according to claim 2 or 3, wherein, A plurality of the protrusions are disposed on the top surface of the lens plate.

6. The lighting device according to claim 2 or 3, wherein, The light source emits light with the highest brightness along the first direction in the resin layer.

7. The lighting device according to claim 2 or 3, wherein, The light source comprises a plurality of light-emitting elements arranged in the resin layer along the second direction. At least one of the plurality of openings is disposed in a region that does not overlap with the light source in the vertical direction.

8. The lighting device according to claim 2 or 3, wherein, At least one of the plurality of openings has a length in the first direction that is longer than its width in the second direction.

9. The lighting device according to claim 1, wherein, The light-shielding layer is in contact with the top surface of the resin layer.

10. The lighting device according to claim 2, wherein, include: A reflective layer is disposed between the substrate and the resin layer.

11. The lighting device according to claim 10, wherein, include: At least one light-transmitting layer is disposed between the resin layer and the light-shielding layer.

12. The lighting device according to claim 1 or 11, wherein, The intensity of each of the plurality of images gradually decreases along the length direction from the center of each image toward the two edges.

13. The lighting device according to claim 1 or 11, wherein, A portion of the lens plate is separated from the light-shielding layer by a second interval greater than the first interval.

14. The lighting device according to claim 1 or 11, wherein, A portion of the lens plate is separated from the light-shielding layer by a third interval smaller than the first interval.

15. The lighting device according to claim 1 or 11, wherein, The lens plate includes a region that is inclined or protruding relative to the top surface of the light-shielding layer.

16. The lighting device according to claim 1 or 11, wherein, The light passing through the lens plate is illuminated as a stereoscopic image.

17. The lighting device according to claim 1 or 11, wherein, The sum of the areas of the plurality of openings is less than 50% of the area of ​​the top surface through which light exits the resin layer.

18. The lighting device according to claim 1 or 11, wherein, The lens plate rotates about an axis that is perpendicular to the center of the first direction of the resin layer.

19. The lighting device according to claim 1 or 11, wherein, The first gap between the lens plate and the light-shielding layer is set as an air layer. The protrusion includes a cylindrical lens.

20. The lighting device according to claim 19, wherein, The length of at least one of the plurality of openings in one direction is in the range of 3 mm to 10 mm. The first interval is in the range of 5mm to 50mm.

Images