Lighting module and lighting device equipped therewith

Abstract

To provide a lighting module to emit line-shaped surface light in one direction, and a lighting device having the same.SOLUTION: A lighting device 200 includes: a plurality of light sources 100 disposed on a substrate; a resin layer 220 disposed on the substrate and the plurality of light sources 100; and a first reflective layer 240 disposed on the resin layer 220. The resin layer 220 includes an exit surface S1 facing the light sources 100. The exit surface S1 of the resin layer 220 includes a plurality of convex portions P0. The light sources 100 are disposed on a virtual curve VcO. Straight lines passing through respective centers of the first and second light sources adjacent to each other and respective centers of the convex portions P0 are disposed at obtuse angles with respect to a straight line connecting the adjacent first and second light sources.SELECTED DRAWING: Figure 5

Description

Technical Field

[0001] Embodiments of the invention relate to a lighting module having a plurality of light sources and a lighting device having the same. Embodiments of the invention relate to a lighting module that provides a surface light source in a line form. Embodiments relate to a lighting device having a lighting module. Embodiments relate to a light unit, a liquid crystal display device, and a vehicle lamp having a lighting module.

Background Art

[0002] Lighting includes not only vehicle lighting but also backlights for displays and signs. Light emitting diodes (LEDs) have advantages such as low power consumption, semi-permanent lifespan, fast response speed, safety, and environmental friendliness compared to existing light sources such as fluorescent lamps and incandescent lamps. Such light emitting elements are applied to various lighting devices such as various display devices, indoor lights, or outdoor lights. Recently, lamps employing a light emitting element such as a light emitting diode as a vehicle light source have been proposed. The light emitting element is advantageous in that it consumes less power than an incandescent lamp. However, since the emission angle of the light emitted from the light emitting element is small, when using the light emitting element as a vehicle lamp, there is a requirement for an increase in the light emitting area of the lamp using the light emitting element. Since the light emitting element has a small size, the degree of freedom in lamp design can be increased, and there is also more economic efficiency due to its semi-permanent lifespan.

Summary of the Invention

Problems to be Solved by the Invention

[0003] Embodiments of the invention include a lighting module that irradiates surface light in a line form in one direction and a lighting device having the same.​ The invention provides a lighting device that converts light emitted from multiple light sources into line-shaped light. The present invention provides a lighting module that provides a light source or a surface light source, and an apparatus having the same. An example involves placing a light source and a resin layer between a substrate and a reflective layer, and irradiating the resin layer in one direction. The invention provides a lighting device. In one embodiment of the invention, a resin layer having a light source is arranged between a plurality of reflective layers. The invention provides a lighting device in which a light source and a resin layer are arranged between a plurality of reflective layers. The present invention provides a lighting device having a light extraction structure on one surface of the resin layer. Multiple embodiments of the invention are provided. A light source and a resin layer are placed between several reflective layers, and a protrusion is formed on one surface of the reflective layer and the resin layer. The present invention provides a lighting device with a recessed section. An embodiment of the invention is a lighting device having a lighting module. We can provide a unit, a liquid crystal display device, and a vehicle lamp. [Means for solving the problem]

[0004] An embodiment of the invention includes a substrate, a plurality of light sources arranged on the substrate, and A resin layer disposed on the substrate and the plurality of light sources, and a first A reflective layer and a resin layer, the resin layer including an emission surface facing the light source, and the emission of the resin layer The surface includes multiple protrusions, and the multiple light sources are arranged on a virtual curve and adjacent to each other. The system includes a first light source and a second light source, and the plurality of protrusions are such that the first protrusion faces the first light source, and a second convex portion facing the second light source, the first light source and the imaginary curve are tangent to each other. A virtual first line passing through the center of the circle formed by the first convex portion at one point, the second light source and the virtual At the second point where the curves are tangent, the imaginary second straight line passing through the center of the circle formed by the second convex portion is, The angle between the first tangent line, which is parallel to the first line and touches the virtual curve at the first point, is It may include the first obtuse angle.

[0005] An embodiment of the invention includes a substrate, a light source placed on the substrate, and the substrate and a resin layer disposed on the light source, and a first reflective layer disposed on the resin layer, The resin layer includes an emission surface facing the light source, and the light source comprises a plurality of light-emitting elements. The ejection surface of the resin layer includes a plurality of protrusions corresponding to each of the plurality of light-emitting elements. Furthermore, each of the plurality of light-emitting elements is positioned on a virtual curve, and the plurality of convex parts The difference in diameter between each of the hypothetical circles formed by them is within 10%.

[0006] An embodiment of the invention includes a substrate, a light source placed on the substrate, and the substrate and a resin layer disposed on the light source, and a first reflective layer disposed on the resin layer, The resin layer includes an emission surface facing the light source, and the light source comprises a plurality of light-emitting elements. The ejection surface of the resin layer includes a plurality of protrusions corresponding to each of the plurality of light-emitting elements. Furthermore, each of the plurality of light-emitting elements is arranged on a virtual curve, and the plurality of light-emitting elements Each of the above includes a plurality of straight lines passing through the center of the imaginary circle formed by each of the plurality of convex parts, Each of the aforementioned multiple straight lines and each of the aforementioned multiple light-emitting elements touches the virtual curve. The first angle formed by each tangent line at a point can include a region that increases in one direction. .

[0007] According to an embodiment of the invention, the second tangent line that is tangent to the virtual curve at the second point and the second straight line The angle formed by the lines includes a second obtuse angle, which may be greater than the first obtuse angle. The plurality of light sources includes a third light source disposed on the virtual curve, and the plurality of convex portions include a third convex portion facing the third light source. A virtual third straight line passing through the center of the circle formed by the third convex portion at a third point where the third light source and the virtual curve are tangent is parallel to the second straight line, and an angle formed by the third tangent line tangent to the virtual curve at the third point and the third straight line includes a third obtuse angle, and the third obtuse angle may be larger than the second obtuse angle. The virtual curve can pass through the centers of the first light source, the second light source, and the third light source. The curvatures of the virtual circles formed by each of the plurality of convex portions may be the same as each other. The diameter of the circle formed by the convex portion may be larger than the thickness of the resin layer. Each of the plurality of light sources is disposed within a virtual circle formed by the convex portion facing the light source. The plurality of convex portions can include hemispheres, ellipses or aspherical shapes. A second reflective layer disposed between the resin layer and the substrate can be included. The thickness of the resin layer may be smaller than the distance from the rear surface to the emission surface. The maximum distance from the center of each light-emitting element to each convex portion may be the same as each other. Each of the plurality of light-emitting elements is disposed on the circumference formed by the virtual circle, and a plurality of straight lines passing through the centers of each of the plurality of light-emitting elements and the centers of each of the virtual circles may be parallel to each other. The plurality of light-emitting elements includes first to third light-emitting elements, the plurality of convex portions include first to third convex portions, the plurality of straight lines include first to third straight lines, the plurality of tangent lines include first to third tangent lines, the first angle formed by the first straight line and the first tangent line is a first obtuse angle, the first angle formed by the second straight line and the second tangent line is a second obtuse angle, and the plurality of straight lines include first to third straight lines, the plurality of tangent lines include first to third tangent lines, the first angle formed by the first straight line and the first tangent line is a first obtuse angle, the first angle formed by the second straight line and the second tangent line is a second obtuse angle, and the virtual curve can pass through the centers of the first light source, the second light source, and the third light source. The curvatures of the virtual circles formed by each of the plurality of convex portions may be the same as each other. The diameter of the circle formed by the convex portion may be larger than the thickness of the resin layer. Each of the plurality of light sources is disposed within a virtual circle formed by the convex portion facing the light source. The plurality of convex portions can include hemispheres, ellipses or aspherical shapes. A second reflective layer disposed between the resin layer and the substrate can be included. The thickness of the resin layer may be smaller than the distance from the rear surface to the emission surface. The maximum distance from the center of each light-emitting element to each convex portion may be the same as each other. Each of the plurality of light-emitting elements is disposed on the circumference formed by the virtual circle, and a plurality of straight lines passing through the centers of each of the plurality of light-emitting elements and the centers of each of the virtual circles may be parallel to each other. The plurality of light-emitting elements includes first to third light-emitting elements, the plurality of convex portions include first to third convex portions, the plurality of straight lines include first to third straight lines, the plurality of tangent lines include first to third tangent lines, the first angle formed by the first straight line and the first tangent line is a first obtuse angle, the first angle formed by the second straight line and the second tangent line is a second obtuse angle, and the virtual curve can pass through the centers of the first light source, the second light source, and the third light source. The curvatures of the virtual circles formed by each of the plurality of convex portions may be the same as each other. The diameter of the circle formed by the convex portion may be larger than the thickness of the resin layer. Each of the plurality of light sources is disposed within a virtual circle formed by the convex portion facing the light source. The plurality of convex portions can include hemispheres, ellipses or aspherical shapes. A second reflective layer disposed between the resin layer and the substrate can be included. The thickness of the resin layer may be smaller than the distance from the rear surface to the emission surface. The maximum distance from the center of each light-emitting element to each convex portion may be the same as each other. Each of the plurality of light-emitting elements is disposed on the circumference formed by the virtual circle, and a plurality of straight lines passing through the centers of each of the plurality of light-emitting elements and the centers of each of the virtual circles may be parallel to each other. The plurality of light-emitting elements includes first to third light-emitting elements, the plurality of convex portions include first to third convex portions, the plurality of straight lines include first to third straight lines, the plurality of tangent lines include first to third tangent lines, the first angle formed by the first straight line and the first tangent line is a first obtuse angle, the first angle formed by the second straight line and the second tangent line is a second obtuse angle, and the virtual curve can pass through the centers of the first light source, the second light source, and the third light source. The curvatures of the virtual circles formed by each of the plurality of convex portions may be the same as each other. The diameter of the circle formed by the convex portion may be larger than the thickness of the resin layer. Each of the plurality of light sources is disposed within a virtual circle formed by the convex portion facing the light source. The plurality of convex portions can include hemispheres, ellipses or aspherical shapes. A second reflective layer disposed between the resin layer and the substrate can be included. The thickness of the resin layer may be smaller than the distance from the rear surface to the emission surface. The maximum distance from the center of each light-emitting element to each convex portion may be the same as each other. Each of the plurality of light-emitting elements is disposed on the circumference formed by the virtual circle, and a plurality of straight lines passing through the centers of each of the plurality of light-emitting elements and the centers of each of the virtual circles may be parallel to each other. The plurality of light-emitting elements includes first to third light-emitting elements, the plurality of convex portions include first to third convex portions, the plurality of straight lines include first to third straight lines, the plurality of tangent lines include first to third tangent lines, the first angle formed by the first straight line and the first tangent line is a first obtuse angle, the first angle formed by the second straight line and the second tangent line is a second obtuse angle, and the plurality of light-emitting elements includes first to third light-emitting elements, the plurality of convex portions include first to third convex portions, the plurality of straight lines include first to third straight lines, the plurality of tangent lines include first to third tangent lines, the first angle formed by the first straight line and the first tangent line is a first obtuse angle, the first angle formed by the second straight line and the second tangent line is a second obtuse angle, and the third straight line and the third tangent line is a third obtuse angle, and the third obtuse angle may be larger than the second obtuse angle. The virtual curve can pass through the centers of the first light source, the second light source, and the third light source. The curvatures of the virtual circles formed by each of the plurality of convex portions may be the same as each other. The diameter of the circle formed by the convex portion may be larger than the thickness of the resin layer. Each of the plurality of light sources is disposed within a virtual circle formed by the convex portion facing the light source. The plurality of convex portions can include hemispheres, ellipses or aspherical shapes. A second reflective layer disposed between the resin layer and the substrate can be included. The thickness of the resin layer may be smaller than the distance from the rear surface to the emission surface. The maximum distance from the center of each light-emitting element to each convex portion may be the same as each other. Each of the plurality of light-emitting elements is disposed on the circumference formed by the virtual circle, and a plurality of straight lines passing through the centers of each of the plurality of light-emitting elements and the centers of each of the virtual circles may be parallel to each other. The plurality of light-emitting elements includes first to third light-emitting elements, the plurality of convex portions include first to third convex portions, the plurality of straight lines include first to third straight lines, the plurality of tangent lines include first to third tangent lines, the first angle formed by the first straight line and the first tangent line is a first The first angle formed by the third straight line and the third tangent line is an obtuse angle, and the second obtuse angle may be larger than the first obtuse angle and smaller than the third obtuse angle. The straight line connecting adjacent light-emitting elements can have an inclination with respect to a horizontal straight line. The line connecting adjacent light-emitting elements can have an inclination with respect to a horizontal straight line. The line connecting adjacent light-emitting elements can have an inclination with respect to a horizontal straight line.

Advantages of the Invention

[0008] According to an embodiment of the invention, a resin layer and a light source are arranged between a plurality of reflective layers, and a line-shaped surface light source can be provided. According to an embodiment of the invention, the lighting module is provided in a line shape having a thin thickness and a long length in one direction, improving the luminous intensity and increasing the design freedom. According to an embodiment of the invention, by forming a resin layer covering the light source between a plurality of reflective layers, the manufacturing process of the lighting module can be simplified. According to an embodiment of the invention, light loss can be reduced and light efficiency can be improved. According to an embodiment of the invention, the uniformity of the light of the surface light source emitted between a plurality of reflective layers can be improved. According to an embodiment of the invention, by aligning the centers of each of a plurality of light sources and the center of the convex portion of the resin layer, the uniformity of the light along the light emission direction can be improved. According to an embodiment of the invention, by aligning the light sources arranged along a virtual curve or a diagonal direction with the convex portions of the resin layer so as to correspond to each other, the uniformity of the light can be improved. The lighting module according to an embodiment of the invention and the lighting device having the same have improved optical reliability. The lighting module according to an embodiment of the invention can be applied to a vehicle lighting device, a light unit, various display devices, and a surface light source lighting device having the same. According to an embodiment of the invention, a resin layer and a light source are arranged between a plurality of reflective layers, and a line-shaped surface light source can be provided. According to an embodiment of the invention, the lighting module is provided in a line shape having a thin thickness and a long length in one direction, improving the luminous intensity and increasing the design freedom. According to an embodiment of the invention, by forming a resin layer covering the light source between a plurality of reflective layers, the manufacturing process of the lighting module can be simplified. According to an embodiment of the invention, light loss can be reduced and light efficiency can be improved. According to an embodiment of the invention, the uniformity of the light of the surface light source emitted between a plurality of reflective layers can be improved. According to an embodiment of the invention, by aligning the centers of each of a plurality of light sources and the center of the convex portion of the resin layer, the uniformity of the light along the light emission direction can be improved. According to an embodiment of the invention, by aligning the light sources arranged along a virtual curve or a diagonal direction with the convex portions of the resin layer so as to correspond to each other, the uniformity of the light can be improved. The lighting module according to an embodiment of the invention and the lighting device having the same have improved optical reliability. The lighting module according to an embodiment of the invention can be applied to a vehicle lighting device, a light unit, various display devices, and a surface light source lighting device having the same. According to an embodiment of the invention, a resin layer and a light source are arranged between a plurality of reflective layers, and a line-shaped surface light source can be provided. According to an embodiment of the invention, the lighting module is provided in a line shape having a thin thickness and a long length in one direction, improving the luminous intensity and increasing the design freedom. According to an embodiment of the invention, by forming a resin layer covering the light source between a plurality of reflective layers, the manufacturing process of the lighting module can be simplified. According to an embodiment of the invention, light loss can be reduced and light efficiency can be improved. According to an embodiment of the invention, the uniformity of the light of the surface light source emitted between a plurality of reflective layers can be improved. According to an embodiment of the invention, by aligning the centers of each of a plurality of light sources and the center of the convex portion of the resin layer, the uniformity of the light along the light emission direction can be improved. According to an embodiment of the invention, by aligning the light sources arranged along a virtual curve or a diagonal direction with the convex portions of the resin layer so as to correspond to each other, the uniformity of the light can be improved. The lighting module according to an embodiment of the invention and the lighting device having the same have improved optical reliability. The lighting module according to an embodiment of the invention can be applied to a vehicle lighting device, a light unit, various display devices, and a surface light source lighting device having the same. According to an embodiment of the invention, a resin layer and a light source are arranged between a plurality of reflective layers, and a line-shaped surface light source can be provided. According to an embodiment of the invention, the lighting module is provided in a line shape having a thin thickness and a long length in one direction, improving the luminous intensity and increasing the design freedom. According to an embodiment of the invention, by forming a resin layer covering the light source between a plurality of reflective layers, the manufacturing process of the lighting module can be simplified. According to an embodiment of the invention, light loss can be reduced and light efficiency can be improved. According to an embodiment of the invention, the uniformity of the light of the surface light source emitted between a plurality of reflective layers can be improved. According to an embodiment of the invention, by aligning the centers of each of a plurality of light sources and the center of the convex portion of the resin layer, the uniformity of the light along the light emission direction can be improved. According to an embodiment of the invention, by aligning the light sources arranged along a virtual curve or a diagonal direction with the convex portions of the resin layer so as to correspond to each other, the uniformity of the light can be improved. The lighting module according to an embodiment of the invention and the lighting device having the same have improved optical reliability. The lighting module according to an embodiment of the invention can be applied to a vehicle lighting device, a light unit, various display devices, and a surface light source lighting device having the same. According to an embodiment of the invention, a resin layer and a light source are arranged between a plurality of reflective layers, and a line-shaped surface light source can be provided. According to an embodiment of the invention, the lighting module is provided in a line shape having a thin thickness and a long length in one direction, improving the luminous intensity and increasing the design freedom. According to an embodiment of the invention, by forming a resin layer covering the light source between a plurality of reflective layers, the manufacturing process of the lighting module can be simplified. According to an embodiment of the invention, light loss can be reduced and light efficiency can be improved. According to an embodiment of the invention, the uniformity of the light of the surface light source emitted between a plurality of reflective layers can be improved. According to an embodiment of the invention, by aligning the centers of each of a plurality of light sources and the center of the convex portion of the resin layer, the uniformity of the light along the light emission direction can be improved. According to an embodiment of the invention, by aligning the light sources arranged along a virtual curve or a diagonal direction with the convex portions of the resin layer so as to correspond to each other, the uniformity of the light can be improved. The lighting module according to an embodiment of the invention and the lighting device having the same have improved optical reliability. The lighting module according to an embodiment of the invention can be applied to a vehicle lighting device, a light unit, various display devices, and a surface light source lighting device having the same. According to an embodiment of the invention, a resin layer and a light source are arranged between a plurality of reflective layers, and a line-shaped surface light source can be provided. According to an embodiment of the invention, the lighting module is provided in a line shape having a thin thickness and a long length in one direction, improving the luminous intensity and increasing the design freedom. According to an embodiment of the invention, by forming a resin layer covering the light source between a plurality of reflective layers, the manufacturing process of the lighting module can be simplified. According to an embodiment of the invention, light loss can be reduced and light efficiency can be improved. According to an embodiment of the invention, the uniformity of the light of the surface light source emitted between a plurality of reflective layers can be improved. According to an embodiment of the invention, by aligning the centers of each of a plurality of light sources and the center of the convex portion of the resin layer, the uniformity of the light along the light emission direction can be improved. According to an embodiment of the invention, by aligning the light sources arranged along a virtual curve or a diagonal direction with the convex portions of the resin layer so as to correspond to each other, the uniformity of the light can be improved. The lighting module according to an embodiment of the invention and the lighting device having the same have improved optical reliability. The lighting module according to an embodiment of the invention can be applied to a vehicle lighting device, a light unit, various display devices, and a surface light source lighting device having the same. According to an embodiment of the invention, a resin layer and a light source are arranged between a plurality of reflective layers, and a line-shaped surface light source can be provided. According to an embodiment of the invention, the lighting module is provided in a line shape having a thin thickness and a long length in one direction, improving the luminous intensity and increasing the design freedom. According to an embodiment of the invention, by forming a resin layer covering the light source between a plurality of reflective layers, the manufacturing process of the lighting module can be simplified. According to an embodiment of the invention, light loss can be reduced and light efficiency can be improved. According to an embodiment of the invention, the uniformity of the light of the surface light source emitted between a plurality of reflective layers can be improved. According to an embodiment of the invention, by aligning the centers of each of a plurality of light sources and the center of the convex portion of the resin layer, the uniformity of the light along the light emission direction can be improved. According to an embodiment of the invention, by aligning the light sources arranged along a virtual curve or a diagonal direction with the convex portions of the resin layer so as to correspond to each other, the uniformity of the light can be improved. The lighting module according to an embodiment of the invention and the lighting device having the same have improved optical reliability. The lighting module according to an embodiment of the invention can be applied to a vehicle lighting device, a light unit, various display devices, and a surface light source lighting device having the same. <​​​​​​​​​​​​​​​​​​​​Figure 1 is a perspective view showing a lighting device according to the first embodiment of the invention. [Figure 2] Figure 2 is a cross-sectional view of the lighting device in Figure 1 from the BB side. [Figure 3] Figure 3 is a cross-sectional view of the lighting device shown in Figure 1 from the CC side. [Figure 4] Figure 4 is an example of a plan view of the lighting device shown in Figure 1. [Figure 5] Figure 5 is an example of a plan view of a lighting device according to a second embodiment of the invention. [Figure 6] Figure 6 is an enlarged view of the first region A1 of the lighting device shown in Figure 5. [Figure 7] Figure 7 is a magnified view of the second region A2 of the lighting device shown in Figure 5. [Figure 8] Figure 8 is an enlarged view of the third region A3 of the lighting device shown in Figure 5. [Figure 9] Figure 9 is a diagram illustrating an example of a lighting device according to an embodiment of the invention, in which the light source and the protrusions of the resin layer are aligned in the direction of the target. [Figure 10] Figures 10(A) and (B) illustrate the light emission angle at the convex portion corresponding to the position of the first size light source in an embodiment of the invention. [Figure 11] Figures 11(A) and (B) illustrate the light emission angle at the convex portion corresponding to the position of the second-size light source in an embodiment of the invention. [Figure 12] Figures 12(A) and (B) show examples in which the position of the light source is changed in an elliptical convex portion that is elongated in the second direction X, according to an embodiment of the invention. [Figure 13] Figures 13(A) and (B) show examples in which the position of the light source is changed in an elliptical convex portion that is elongated in the first direction Y, according to an embodiment of the invention. [Figure 14] Figures 14(A) and (B) show examples in which the position of the light source in the convex portion having an aspherical lens shape is changed in an embodiment of the invention. [Figure 15] Figures 15(A) to (E) are diagrams illustrating the light paths in an embodiment of the invention, depending on the difference in distance between the position of the light source and the center of the protrusion. [Figure 16] Figure 16 is a diagram illustrating the light emission angle according to the position of the protrusions in the resin layer and the light source in an embodiment of the invention. [Figure 17] Figure 17 shows an example of a flexible lighting device in an embodiment of the invention. [Figure 18] Figure 18 shows an example of a flexible lighting device in an embodiment of the invention. [Figure 19] Figure 19 shows an example of a lamp to which the lighting device according to an embodiment of the invention is applied. [Modes for carrying out the invention]

[0010] The following is a description by a person with ordinary skill in the art to which this invention belongs, with reference to the attached drawings. Preferred embodiments that facilitate the implementation of the present invention will be described in detail. However, the embodiments described herein are not specified. The embodiments and configurations illustrated in the drawings are merely preferred embodiments of the present invention, and as of the time of filing this application, Please understand that there may be a variety of equivalents and variations that can substitute for these. In explaining in detail the operating principle for a preferred embodiment of the present invention, the known functions involved Or, if a specific explanation of the configuration is deemed to unnecessarily obscure the gist of the present invention. In some cases, a detailed explanation will be omitted. The terms described below are used in consideration of the function in this invention. As defined terms, the meaning of each term shall be interpreted in accordance with the content throughout this specification. It should be done. For parts that have similar functions and operations throughout the entire drawing, the same drawing should be used. A reference numeral is used to indicate the number of parts. The lighting device according to the present invention is suitable for a variety of lamp devices that require lighting, such as a car. Applicable to dual-purpose lamps, household lighting fixtures, and industrial lighting fixtures. For example, vehicle lamps. If applicable, headlights, side lights, side mirror lights, fog lights, taillights (Tail lights) mp), brake lights, auxiliary brake lights, turn signals, position lamps, daytime running lights, vehicle interior lighting Door scuffs, rear combination lamps, backup lamps, room lamps, Applicable to dashboard lighting, etc. The lighting device of the present invention is applicable to indoor and outdoor advertising devices, and displays. It can be applied to display devices and various electric vehicle fields, as well as other applications currently under development and commercialized. Whether or not, all fields related to lighting and advertising that can be realized through future technological advancements. It can be said that this is applicable to various fields.

[0011] The following examples will become clear from the attached drawings and descriptions of the examples. In the explanation of the example, each layer, region, pattern, or structure is the substrate, each layer, region, pad Or, if it is stated that it is formed on or under the pattern, then "on" "On" and "under" are forms of "directly" or "indirectly." This includes everything that is accomplished. Furthermore, the standards for the upper or lower levels of each layer are explained based on the drawings. I will reveal it.

[0012] <Lighting equipment> Figure 1 is a perspective view showing a lighting device according to the first embodiment of the invention, and Figure 2 shows the lighting of Figure 1. Figure 3 is a cross-sectional view of the BB side of the device, Figure 4 is a cross-sectional view of the CC side of the lighting device in Figure 1, and Figure 4 is This is an example of a plan view of the lighting device shown in Figure 1.

[0013] Referring to Figures 1 to 4, the lighting device 200 according to an embodiment of the invention has multiple light sources 100 The light emitted from the plurality of light sources 100 is irradiated with a light source having a line width. Light emitted from light source 100 is emitted from a surface light source having a line width or a thin height. The lighting device 200 is a flexible module or a rigid module. It may also be the case that the lighting device 200 has at least one of the first and second directions Y and X. It can be flat or curved relative to the first direction Y. The lighting device may include two corresponding sides and two sides that correspond to each other in the second direction X. In 200, the line width is the vertical height, and is 3 mm or less, for example, 3 mm or less. It can have a range of 2.4 mm to 3 mm. The lighting is provided in modules such as straight lines, curves, or wave shapes, allowing for freedom in lighting design. The angle is improved and the lamp is effectively positioned in the bracket or housing. The apparatus 200 includes a substrate 210, a light source 100 placed on the substrate 210, and the substrate 21 0 and a resin layer 220 placed on the light source 100, and placed on the resin layer 220 It may include a first reflective layer 240. The lighting device 200 is the substrate 210 and A second reflective layer 230 may be included between the resin layers 220. These are arranged in the second direction X or in the direction from the third surface S3 toward the fourth surface S4. The light source 10 0 is placed in one row. As another example, the light source 100 has two or more rows in different columns. They may be arranged in a straight or curved line extending in the second direction X. They are arranged on top. Each of the light sources 100 may be a light-emitting element. Here, Figure 4 As shown above, the distance G1 between adjacent light sources 100 may be the same. G1 may be identical to each other in order to ensure a uniform distribution of light emitted from the light source 100. The aforementioned gap G1 is the thickness of the lighting device 200, for example, from the bottom surface of the substrate 210 to the first reflective layer 240 It may be greater than the vertical distance to the top surface (e.g., Z1). For example, if the vertical distance is Z1 In this case, the spacing G1 can be three times or more the thickness Z1. The spacing G1 is 1 It can be 0 mm or more, for example, in the range of 10 mm to 20 mm. Before the interval G1 If it is greater than the range, the luminous intensity may decrease, and if it is smaller than the range, the light source 10 The number of zeros increases. As another example, as shown in Figure 5, adjacent light sources 100 are arranged on the same straight line. Not placed, at this time, the line connecting the two adjacent light sources 100 is a virtual curve or variable The lighting device 200 is provided in a curve having a curved point. The length may be greater than the maximum length Y1 in the first direction Y. The lengths of the first and second directions Y and X are: The thickness Z1 in the vertical direction Z may be greater than the height. The maximum length X1 in the second direction X. This can be varied by the number of light sources 100 arranged, and can have, for example, 30 mm or more. The maximum length Y1 in the first direction Y is 13 mm or more, for example, within the range of 13 mm to 25 mm. It may have an enclosure. The maximum length Y1 in the first direction Y of the lighting device 200 is the light source 10 A region where light emitted from 0 is diffused, a region protecting the area behind the light source 100, and a pattern Provided considering the region. With respect to the maximum length Y1 in the first direction Y, the third surface of the lighting device If the length on (for example, S3) and the length on the fourth surface (for example, S4) are the same or different from each other It is also possible that the length of the fourth face S4 in the first direction Y is smaller than the length of the third face S3. Good. The light source 100 is positioned between layers of reflective material that are facing each other in the vertical direction. The light source 100 is located in the region between layers of reflective material that are facing each other in the vertical direction, and one of the layers They may be arranged adjacent to each other. The light source 100 has a vertically opposing supporting part It may be placed between the material and the reflective member or layer. The light source 100 is at least one It can emit light in one direction or in multiple directions. Each side can have the same thickness or the same height as the other. 0 is sealed by a layer of transparent resin material, and the resin material layer is between the layers of reflective material. They may be positioned or placed between a supporting member and a reflective layer or member.

[0014] The substrate 210 includes a printed circuit board (PCB), and is made of, for example, resin. Printed circuit boards (PCBs), metal core PCBs, flexible PCBs, etc. The substrate may include a laminated PCB or an FR-4 substrate. The substrate 210 is flexible. Alternatively, the substrate may be made of a rigid material. The substrate 210 has a circuit pattern arranged on its upper surface. Furthermore, the circuit pattern includes a plurality of pads in the region corresponding to the light source 100. This is possible. The circuit pattern on the substrate 210 is located at the top, or at the top and bottom. It will be placed there.

[0015] The resin layer 220 is placed on the light source 100. They are either placed on the sides of the light source 100, or placed between adjacent light sources 100, each light It is positioned on top of the source 100. The resin layer 220 is on top of the substrate 210. The resin layer 220 is positioned between the substrate 210 and the first reflective layer 240. The resin layer 220 is disposed between the upper surface of the substrate 210 and the lower surface of the first reflective layer 240. The resin layer 220 surrounds the multiple light sources 100 arranged on the substrate 210. Furthermore, the light source 100 can be embedded. The resin layer 220 is a light-transmitting layer. Good. The resin layer 220 may include glass material as another material. The light source 100 is arranged in a number of n (n≧2) along the first row or virtual line. Since the thickness of layer 220 is provided to be less than the thickness of the lighting device 200, the width of the line light It can be made smaller. That is, the width of the line light source is the thickness of the resin layer 220. The resin layer 220 has a first surface S1 and a second surface S2 that are arranged on opposite sides of each other. This may include a third surface S3 and a fourth surface S4 arranged on opposite sides of each other. Thus, the first and second surfaces S1 and S2 are arranged to correspond to each other with respect to the first direction Y. The third and fourth surfaces S3 and S4 are positioned such that they correspond to each other with respect to the second direction X. The first and second surfaces S1 and S2 are based on a virtual line formed by connecting multiple light sources 100. They are arranged to correspond to each other. The third and fourth surfaces S3 and S4 are multiple light sources It is positioned outside the outermost light source of the 100. As another example, as shown in Figure 5, The first and second surfaces S1 and S2 are extended along a virtual line and are based on a plurality of light sources 100. They are then positioned on opposite sides of each other.

[0016] Each outer surface of the lighting device 200 has the thickest thickness within the lighting device 200. These may be any of the sides of the resin layer 220. The outer surfaces S1, S2, S3 of the resin layer 220 S4 is perpendicular to each side surface of the substrate 210, the second reflective layer 230, and the first reflective layer 240. They are arranged on or on the same plane. Another example is the outer surface S1 of the resin layer 220 At least one of S2, S3, and S4 is the substrate 210, the second reflective layer 230 and The first reflective layer 240 is provided either coplanar with each side surface or on an inclined surface. And the second surfaces S1 and S2 extend in the second direction X from both ends of the third and fourth surfaces S3 and S4. The first surface S1 may include a curved surface while facing the second surface S1. The first surface S1 is the surface in the direction from which light is emitted from the multiple light sources 100, and the second surface S2 is, The third surface may be a surface facing the direction opposite to the direction in which light is emitted from the multiple light sources 200. S3 may be an outer surface adjacent to the first light source, and the fourth surface S4 may be adjacent to the last light source. The outer surfaces may be in contact with each other. The plurality of light sources 100 are located between the first surface S1 and the second surface S2. The multiple light sources 100 are arranged between the third surface S3 and the fourth surface S4. In the resin layer 220, the length of the first surface S1 and the second surface S2 in the second direction X is the length in the vertical direction It may be greater than the height or thickness. The maximum in the second direction X of the first surface S1 and the second surface S2. The lengths may be the same or different from each other. The perpendicular direction of the first surface S1 and the second surface S2 The height or thickness may be the same to each other. The perpendicular direction of the third surface S3 and the fourth surface S4 The height or thickness in the direction is the same as the vertical height or thickness of the first surface S1 and the second surface S2. It may be one. In the resin layer 220, the first surface S1 and the second surface S2 are in the second direction The sides may have a long length in X. The third surface S3 and the fourth surface S4 are the first The side surface may have a longer length in direction Y. The first surface S1 is the emission part of the light source 100. Corresponding to 111, or exposed in the second direction X from the first end of the third surface S3 and the fourth surface S4 It may also be a surface. The second surface S2 faces the rear surface of the multiple light sources 100, or the third surface S2 It may also be a surface exposed in the second direction X from the second end of surface S3 and the fourth surface S4. The third surface And the fourth surfaces S3 and S4 may be different surfaces from the first surface S1 and the second surface S2. The rear surface of the light source 100 is either the opposite side of the emission section 111 or the surface corresponding to the second surface S2. That's fine.

[0017] Each of the emission portions 111 of the plurality of light sources 100 corresponds to the first surface S1. Yes, it is possible. The light emitted from the light source 100 is emitted through the first surface S1, and some of the light is It is emitted through at least one of the second surface S2, the third surface S3, and the fourth surface S4. In other words, most of the light emitted from the light source 100 is emitted through the first surface S1. In the lighting device 200, the maximum lengths Y1 and X1 in the first and second directions are the first of the resin layer 220. The maximum length may be in two directions Y and X. This allows the first surface S1 of the resin layer 220 to A line-shaped light source is emitted through it. The thickness of the first surface S1 of the resin layer 220 is the resin layer The thickness of 220 may be less than 3 mm. In the resin layer 220, the first surface S1 This may be the emission surface from which light emitted from the light source 100 is emitted. The first surface may be the front surface or the exit surface, and the second surface S2 may be the rear surface or the non-exit surface. Alternatively, the first surface S1 may have a plane in the vertical direction with a convex portion P0 and a recessed portion C along the second direction X. The structure is extended with respect to 0. As another example, the first surface S1 bulges in the vertical direction It is either a curved surface, or an inclined structure that protrudes from the upper end to the lower end, or from the lower end to the upper end It may also be an inclined structure that protrudes in the direction. The first surface S1 may have a regular uneven shape or unevenness. The structure may be arranged on the side. The surface area of ​​the first surface S1 is greater than the surface area of ​​the opposite second surface S2. It may be a region having a wide surface area. The first surface S1 corresponds to each light source 100. Multiple convex surfaces S11 and multiple concave surfaces S12 arranged between each of the multiple convex surfaces S11 This may include: The resin layer 220 protruding from the first surface S1 with a convex surface S11. It may include a plurality of protrusions P0. The protrusions P0 are in the direction of the first surface S1 or the exit direction. It may include a convex surface S11 or lens surface that bulges in the direction. The convex surface S11 is a convex lens It may be provided as a part. The resin layer 220 has the protrusion P on the first surface S1. A concave surface S12 is positioned in the region between 0. The concave surface S12 is either a recessed surface or a flat surface. The resin layer 220 or the lighting device 200 may include surfaces between the protrusions P0. The region may include a recessed portion C0 that is indented in the direction of the second surface S2. The recess portion C0 is the same as the region of the concave surface S12 in the second direction X. They are positioned between the protrusions P0. The recess C0 is on the third and fourth surfaces S3 and S4. They can be separated. The recess portion C0 is a recess located in the region between the convex portions P0. It may include a surface S12. Here, the first surface S1 emits light from its entire region. Since this is possible, it can be defined as the ejection surface. The convex surface S11 and the concave surface S12 are arranged alternately. The protrusions P0 and recesses C0 are arranged alternately on the first surface S1. The outermost surface located in the second direction X may be part of the convex surface S11. The convex surface S11 of the edge is extended from the third surface S3 or from the fourth surface S4. The center of each of the multiple convex surfaces S11 is in the first direction Y, and the respective of the multiple light sources 100 They are each positioned at a location corresponding to the center. The center of each of the multiple protrusions P0 is The multiple light sources 100 are positioned in one direction Y, corresponding to the center of each of them. Each of the 100 light sources can overlap with each convex portion P0 in the first direction Y. Each of the light sources 100 overlaps with the convex surface S11 in the first direction Y, and with the concave surface S12 in the first direction Y They do not need to overlap. Each of the plurality of light sources 100 is positioned opposite the recess C0 and the first direction It does not need to overlap in the direction Y. The vertical height of the convex surface S11 is the vertical direction of the resin layer 220. The thickness may be the same as that of the direction. The vertical height of the concave surface S12 is the same as that of the resin layer 220 The thickness in the vertical direction may be the same as the resin layer 220. The resin layer 220 covers the light source 100. It can be molded. Each of the light sources 100 may include a light-emitting chip. The light source 100 includes a reflective side wall, for example, a main body, that surrounds the outside of the light-emitting chip. This is possible. The reflective side wall has an open region facing the first surface S1 of the resin layer 220. The structure is provided to surround the light-emitting chip. The reflective sidewall is of the light source 100 It may be provided as part of or as a separate reflective material. In the light source 100, the emission part 11 The sides other than 1 may be made of reflective material, or transparent or opaque material. The resin layer 220 has a refractive index of 1.70 or less, for example, in the range of 1.25 to 1.70. This can be achieved. If the refractive index of the resin layer 220 falls outside the range, the light extraction efficiency will decrease. There is.

[0018] Each of the aforementioned light sources 100 has a bonding section located at its lower end, and is connected to the pads of the substrate 210. They are electrically connected. The light source 100 is connected in series by the circuit pattern of the substrate 210. They may be connected in series-parallel, parallel-series, or parallel. As another example, the light The power source 100 is arranged in various linked groups according to the circuit pattern of the substrate 210. The light source 100 is an element having a light-emitting chip or an LED chip packaged in The package may include the light-emitting chip, which emits blue, red, green, and ultraviolet (UV) light. It can emit at least one light. The light source 100 can emit white, blue, red, and green light. It can emit light from at least one of the following. The light source 100 emits light in a lateral direction. The bottom is placed on the substrate 210. The light source 100 is a side view ) type package. As another example, the light source 100 is an LED chip It is possible that one side of the LED chip is open and a reflective member is placed on the other side. The light source 100 may include a phosphor. The light source 100 has a surface on the light-emitting chip. It may include a covering phosphor layer or molding member. The phosphor layer is made of phosphor It may be an added layer, and the molding member is a transparent resin part having a phosphor. It may be a material, or a transparent resin component free of impurities such as phosphors.

[0019] As shown in Figure 4, the maximum distance between the light source 100 and the first surface S1 is as follows, with the light source 100 as the reference. The distance D2 and the distance D3 between the light source 100 and the second surface S2 may be different. The distance D3 between 0 and the preceding second surface S2 can be 2 mm or more, for example, 2 mm to 2 It can have a range of 0 mm. The distance D3 between the light source 100 and the second surface S2 is If the range is smaller than the aforementioned range, the area in which moisture can penetrate or a circuit pattern can be formed becomes smaller. If it is greater than the aforementioned range, the size of the lighting device 200 will increase. The maximum distance D2 is before The maximum distance between the convex surface S11 and the light source 100, or the perpendicular distance between the light source 100 and the vertex of the convex part P0. It may also be the linear distance. The maximum distance D2 can be 5 mm or more, for example, 5 m The maximum distance can be in the range of m to 20 mm or 8 mm to 20 mm. If D2 is smaller than the range mentioned above, a hot spot may occur, and if it is larger than the range mentioned above... If the multiple light sources 100 are arranged on the same straight line, the module size will increase. In this case, the distance D1 between the straight line connecting the adjacent concave surfaces S12 and each of the light sources 100 is 5 It can be in the range of mm or more, for example, 5 mm to 12 mm, and the distance D1 is within the range If it is smaller, the depth D4 of the recess C0 will increase, or the maximum distance D2 will decrease. Dark areas may occur in the recess C0. The distance D1 is the distance between each of the light sources 100 It can be varied by the optical beam angle. That is, the straight line connecting both ends of the convex portion P0 and each of the light sources 100 If the distance between them is too close, light will be focused in the center region of the convex surface S11, and if it is too far, the light will be focused in the concave region. When light is shone on surface S12, the luminosity passing through convex surface S11 decreases. In the first direction Y The distance W1 between the recessed portion C0 or the concave surface S12 is between the adjacent recessed portion C0 This is a straight-line distance and may be the same as or smaller than the spacing G1 of the light sources 100. If the distance G1 between the light sources 100 is greater than the distance G1 between the light sources 100, then two or more light sources will be located in the region of the protrusion P0. When 100 is placed, the luminosity increases, but it becomes difficult to control the light distribution. The interval W If 1 is smaller than the distance G1 between the light sources 100, the size of the protrusion P0 is small, so light This can provide a uniform distribution, but the luminosity will decrease.

[0020] The spacing W1 between the recessed portions C0 is 15 mm or more, for example, in the range of 15 mm to 20 mm. It can have the following: The spacing W1 of the recess CO is greater than the depth D4 of the recess C0. It may be larger. The ratio of the spacing W1 of the recess C0 to the depth D4 of the recess CO is The depth of the recess portion C0 can be in the range of 1:0.4 to 1:0.7. If it is smaller than the enclosure, the dark area increases between adjacent protrusions P0. If the range is greater than the aforementioned range, it will advance to the area adjacent to the light source 100 and the light source 100 The interference of light between them increases. The depth D4 of the recess C0 connects the vertices of the protrusion P0. The straight line may be the straight-line distance between the straight line and the bottom point of the recess C0. The second reflective layer 23 0 is placed between the resin layer 220 and the substrate 210. The resin layer 220 is The resin layer 220 can contact the top and side surfaces of each light source 100. It can contact the upper surface of layer 230. A portion of the resin layer 220 is the second reflective layer 2 The resin layer 220 can contact the substrate 210 through the 30 holes. It can come into contact with the emission part 111 of the light source 100. The first surface S1 of the resin layer 220, The second surface S2, the third surface S3, and the fourth surface S4 are between the first and second reflective layers 240 and 230. This is the outer surface. The upper surface of the resin layer 220 can come into contact with the first reflective layer 240. The lower surface can come into contact with the second reflective layer 230. The upper surface of the resin layer 220 and The lower surface may be a horizontal plane or a surface with curvature. The second reflective layer 230 If not present, the lower surface of the resin layer 220 can come into contact with the substrate 210. The lower surface area of ​​220 may be the same as the upper surface area of ​​the substrate 210. The lower surface area of ​​0 may be the same as the upper surface area of ​​the second reflective layer 230. The upper surface area of ​​20 may be the same as the upper surface area of ​​the first reflective layer 240. Second direction X The length of the resin layer 220 may be the same as the length of the substrate 210 (for example, X1). The maximum length of the resin layer 220 in the second direction X is the second reflective layer 230 or the first reflective layer The maximum length of the resin layer 220 may be the same as the maximum length of 240. For example, Y1) may be the same as the maximum length of the substrate 210. The resin in the first direction Y Even if the maximum length of layer 220 (e.g., Y1) is the same as the maximum length of the second reflective layer 230, Good. The maximum length of the resin layer 220 in the first direction Y (e.g., Y1) is the first reflective layer 240 It may be the same as the maximum length of the base. The minimum length of the resin layer 220 in the first direction Y is the base It may be the same as the minimum length of plate 210. The minimum length of the resin layer 220 in the first direction Y is The minimum length may be the same as that of the second reflective layer 230 or the first reflective layer 240. The maximum length Y1 in direction Y is between the vertex (or high point) of the protrusion P0 of the lighting device and the second surface S2. The maximum distance may be the minimum length between the bottom point of the concave surface S12 of the lighting device and the second surface S2. It may also be the minimum distance between them.

[0021] A resin layer 220 is placed in the region between the first and second reflective layers 240 and 230. The first and second reflective layers 240 and 230 have the same area as the resin layer 220. The surface and the bottom surface can face each other. As a result, the resin layer 220 can be exposed to the light source 100. The emitted light and the light reflected by the first and second reflective layers 240 and 230 are diffused to form the first surface S It can be guided and emitted in one direction. The second reflective layer 230 is the light source 100 or It can reflect the light emitted from the substrate 210. The second reflective layer 230 is It may be formed as an upper layer or as a separate layer. The second reflective layer 230 is The upper surface of the second reflective layer 230 is bonded to the upper surface of the substrate 210 with adhesive. The grease layer 220 is bonded. The second reflective layer 230 is located in the area corresponding to the lower surface of the light source 100. The region is provided with multiple holes 232, and the light source 100 is connected to the substrate 210 through the holes 232. A portion of the resin layer 220 contacts the substrate 210 through the hole 232. The hole 232 is formed so that the light source 100 is bonded to the substrate 210. It may also be a region. The second reflective layer 230 may be formed as a single layer or a multilayer structure. The second reflective layer 230 includes a material that reflects light, such as a metal or a nonmetallic material. This is possible. When the second reflective layer 230 is made of metal, it can be stainless steel, aluminum (Al), or silver. It can contain a metal layer such as (Ag), and if it is a non-metallic substance, it can be a white resin material or plastic It may include a black material. The second reflective layer 230 may be made of a white resin material or polyester (P The material may include ET) material. The second reflective layer 230 may be a low-reflection film, a high-reflection film. It may include at least one of a diffuse reflection film or a specular reflection film. The second reflective layer 230 is, for example, a specular reflection film for reflecting incident light to the first surface S1. It may be provided as such.

[0022] As shown in Figure 2, the thickness Zc of the second reflective layer 230 is smaller than the thickness Za of the substrate 210. It may be omitted. The thickness Zc of the second reflective layer 230 is 0.5 of the thickness Za of the substrate 210. They are arranged at more than twice the normal ratio and less than 1, which can reduce the transmission loss of incident light. The thickness Zc of the reflective layer 230 can be in the range of 0.2 mm to 0.4 mm, and the range If it is smaller, light transmission loss occurs, and if it is thicker than the range, the thickness Z of the lighting device 200. 1 increases. The first reflective layer 240 is arranged over the entire upper surface area of ​​the resin layer 220, Light loss can be reduced. The resin layer 220 is thicker than the thickness of the light source 100. It may be formed of Zb. Here, the thickness of the light source 100 is the vertical direction of the light source 100 The length may be smaller than the length K1 in the second direction X (Figure 4). The thickness of the light source 100 is The thickness of the light source 100 may be 3 mm or less, for example, 2 mm or less. It can have a range of mm, for example, 1.2 mm to 1.8 mm. A portion of the resin layer 220 is placed between each of the light sources 100 and the first reflective layer 240. This allows the resin layer 220 to protect the top of each light source 100 and prevent moisture from entering. This prevents light from being transmitted. The light source 100 has a substrate 210 at the bottom and a tree at the top. Since the oil layer 220 is placed therein, the upper and lower parts of each of the light sources 100 can be protected. Therefore, the distance between the upper surface of the resin layer 220 and the upper surface of each light source 100 is 0.6 mm. The following may be arranged in a range of, for example, 0.5 mm to 0.6 mm. The upper part of the resin layer 220 The above extends above each light source 100 and can protect the upper part of the light source 100. The thickness Zb of the resin layer 220 may be the distance between the upper and lower surfaces of the resin layer 220. The thickness Zb of the resin layer 220 is the vertical distance between the first and second reflective layers 240 and 230. They may be separated. The thickness Zb is the same as the distance between the first and second reflective layers 240 and 230. It may be one. The thickness Zb is smaller than the distance between the first surface S1 and the second surface S2. It may be cut. For example, the distance between the first surface S1 and the second surface S2 is the maximum length Y1 and It may include a minimum length. The maximum length Y1 in the first direction Y is the vertex of the convex portion P0. It may also be the straight-line distance between and the second surface S2. The third and fourth surfaces S3 of the resin layer 220, The distance or spacing between S4 is greater than the distance between the vertex of the protrusion P0 and the second surface S2. It is not necessary. The minimum length in the first direction Y is the straight-line distance between the concave surface S12 and the second surface S2. The distance or spacing between the second reflective layer 230 and the first reflective layer 240 may be This may be smaller than the distance or gap between the first surface S1 and the second surface S2 of the resin layer 220. The distance between the first and second reflective layers 240 and 230 is the first direction of the lighting device 200. By positioning it smaller than the length or minimum width of Y, a line-shaped surface light is formed through the first direction Y. It can provide a light source, improve light intensity, and prevent hot spots. Furthermore, the lighting device It may also be provided with a certain thickness and flexible properties that allow it to have irregularities in the third direction Z. The thickness Zb of the resin layer 220 may be twice or less the thickness of the light source 100, for example. The thickness of the resin layer 220 may be more than 1 to 2 times the thickness of the light source 100. b is 2 mm or less, for example, in the range of 1.5 mm to 1.9 mm or 1.6 mm to 1.8 mm. It can have an enclosure. The thickness Zb of the resin layer 220 is the thickness Z of the lighting device 200. It may be 0.8 times or less of 1, for example, 0.4 to 0.0 times the thickness Z1 of the lighting device 200. It can have a range of 8 times. The resin layer 220 is the thickness Z1 of the lighting device 200 Since they are positioned with a difference of 1.2 mm or less, a decrease in the light efficiency of the lighting device 200 can be prevented. This allows for enhanced flexibility. As shown in Figure 4, the second of each light source 100 The length K1 in direction X can be 2 mm or more, for example, in the range of 2 mm to 7 mm. The length K1 of each light source 100 is the length of the longer side, and is smaller than the width of each protrusion 100. Yes, and may be greater than the thickness of the light source. The thickness Zb of the resin layer 220 is equal to the thickness of each light source 10 The length of the second direction X of 0 may be smaller than the maximum length. The thickness Zb of the resin layer 220. The length of the convex surface S11 in the second direction X may be smaller than the maximum length of the convex surface S11. That is, a slim resin layer. A thickness of 220 Zb is provided, and a line shape is formed through the first surface S1 in one direction, for example, 3 mm or less. A surface light source having the line width shown below can be provided. The convex surface or convex surface S of the convex portion P0. 11 may have a first curvature. The concave surface S12 is flat or the first curvature It can have a curvature greater than the ratio. Here, the radius of curvature of the convex portion P0 is 5 mm or less. For example, it can have a range of 5mm to 15mm or 8mm to 11mm. If the radius of curvature of each of the aforementioned protrusions P0 is smaller than the aforementioned range, the improvement in luminosity becomes minute, and the If the area is larger than the range, dark areas may occur. At least one of the concave surfaces S12 Alternatively, two or more radii of curvature may be 0.12 times or less smaller than the radius of curvature of the convex portion P0. The ratio of the radius of curvature of the concave surface S12 to the radius of curvature of the convex portion P0 is within the range of 1:8 to 1:28. It may have an enclosure. If the radius of curvature of the concave surface S12 is smaller than the range, the concave If the amount of light emitted through surface S12 decreases and the dark area increases, and if it is greater than the range, the convex The size of part P0 becomes smaller, which may cause light interference between the light sources 100. The depth D4 and radius of curvature of the concave surface S12 are determined by the position of the light source 100 and the light source 1 Considering the directional angle of 00, improvement of the uniformity of light through the convex portion P0 and the recessed portion C0. and can have a range for suppressing the dark area in the recess portion C0. The radius of curvature of S12 shall be 1.2 mm or less, for example, in the range of 0.5 mm to 1.2 mm. This is possible. The concave surface S12 is provided in a curved shape with a predetermined curvature, so that incident light It can refract and transmit light, reducing the occurrence of dark areas in the recessed C0 region. It is possible.

[0023] On the other hand, the resin layer 220 is made of silicone, silicone molding compound (SMC ), including resin materials such as epoxy or epoxy molding compound (EMC) This can be done. The resin layer 220 is a UV (ultra violet) curable resin or a thermosetting resin material. It can include, for example, PC, OPS, PMMA, PVC, etc., and can selectively include them. For example, The main material of the resin layer 220 is a resin material whose main raw material is urethane acrylate oligomer. For example, synthetic oligomers such as urethane acrylate oligomers can be used. - can be used in a mixture with a polymer type that is polyacrylic. Here, we have low-boiling point dilutable reactive monomers such as IBOA (isobornyl acrylate) and HPA (Hydroxylpr The monomer further contains a mixture of opyl acrylate, 2-HEA (2-hydroxyethyl acrylate), etc. It is possible to use photoinitiators as additives (e.g., 1-hydroxycyclohexyl phenyl-ketone, etc.) Or antioxidants, etc. can be mixed in. Beads (shown in figure) are placed inside the resin layer 220. (cannot be included) and the beads diffuse and reflect incident light, thereby increasing the amount of light. It can be increased. The resin layer 220 may contain a phosphor. This includes at least one of the following: yellow phosphor, green phosphor, blue phosphor, and red phosphor. This can be done. The region in the resin layer 220 where the protrusion P0 is formed is the lens portion. The lens portion of the resin layer 220 may be provided in a lens shape having a convex surface. In the top view, this includes hemispherical, semicircular, semi-elliptical, or aspherical shapes. The lens may include a collimator lens. The lens portion is at a vertex that corresponds to the center of the light source 100, and the distance from the light source 100 is... The distance between them increases. The thickness of the lens portion in the third direction Z is the thickness of the resin layer 220. This is also acceptable. In such a lens portion, the top and bottom surfaces are flat, and the shape is curved in the direction of the first surface S1. Therefore, the light incident in the direction of the first surface S1 can be diffused. The lens portion , positioned between the flat first and second reflective layers 240 and 230 at the top and bottom, the first surface S 1. Light can be refracted and emitted. The lens portion is based on the optical axis. Light entering a region outside this area can be refracted to an exit angle greater than the incident angle. If the illumination device 200 has a flexible characteristic and is bent, the resin layer 220, first The second reflective layers 240 and 230 may include uneven, curved regions. Therefore, Each of the convex surfaces S11 of the resin layer 220 is emitted from each of the light sources 100. It can emit light. Displaced between the protrusions P0 in the resin layer 220. The recess portion C0 is provided as a recess that is indented in the direction of the second surface S2. The recess portion C0 of layer 220 is formed on the concave surface S12 of the resin layer 220. Light emitted from each light source 100 exits through the recessed portion C0 into the region between the convex portions P0. Because it is irradiated, the occurrence of dark areas in recess C0 can be reduced. Here, the resin When the protrusion P0 and the recess C0 are arranged on the layer 220, the substrate 210 and the first The second reflective layers 240 and 230 are shaped such that one side corresponds to the convex portion P0 and the recessed portion C0. It is provided in this form. The convex portion P0 or lens portion of the resin layer 220 is the number of each light source 100 It may be the same as the above.

[0024] The first reflective layer 240 may be made of the same material as the second reflective layer 230. The reflective layer 240 is made of the same material as the second reflective layer 230 in order to reflect light and reduce light transmission loss. The first reflective layer can be made of a material with higher light reflectivity or have a greater thickness. 240 may have the same thickness as or greater than the thickness Zc of the second reflective layer 230. For example, the first and second reflective layers 240 and 230 are provided of the same material and thickness. Alternatively, the thickness Zd of the first reflective layer 240 may be the same as or smaller than the thickness Za of the substrate 210. It may be omitted. The thickness Zd of the first reflective layer 240 is 0.5 of the thickness Za of the substrate 210. They are arranged at a ratio of more than double, for example, in the range of 0.5 to 1 times, which reduces the transmission loss of incident light. Yes, it is possible. The thickness Zd of the first reflective layer 240 is in the range of 0.2 mm to 0.4 mm. If the range is smaller than the aforementioned range, light transmission loss occurs, and if the range is thicker, the lighting equipment The thickness Z1 of the 200 increases. The first reflective layer 240 is formed in a single-layer or multi-layer structure. The first reflective layer 240 may be made of a material that reflects light, such as a metal or a nonmetal. It may include: If the first reflective layer 240 is made of metal, it may be stainless steel, aluminum, etc. It can contain metal layers such as aluminum (Al) and silver (Ag), and if it is a non-metallic substance, it is a white resin material. The first reflective layer 240 may include a white resin material or a plastic material. It may include ester (PET) material. The first reflective layer 240 is a low-reflection film, high It includes at least one of the following: reflective film, diffuse reflection film, or specular reflection film. Yes, it is possible. The first reflective layer 240 is configured such that, for example, the incident light travels in the direction of the first surface S1. It may be provided as a reflective film. The first and second reflective layers 240 and 230 are identical. The materials may be different. The substrate 210 and the first and second reflective layers 240, 23 0 can include the protrusions P0 and recesses C0 of the resin layer 220. That is, the resin layer The substrate 210 and the first and second reflective layers 240, 220 are located on the upper and lower surfaces of the protrusion P0. 30 protrusions P0 are arranged, and the substrate 210 and the first and second reflectors are placed on the recess C0. The recesses C0 of layers 240 and 230 are positioned therein. Therefore, the substrate 210 and the second reflector The laminated structure of layer 230, the resin layer 220, and the first reflective layer 240 has the convex portion in one direction. P0 may have the same structure as the recess portion C0. The protrusion P0 has an upper surface and a lower surface. The shape is flat and may include a curved or hemispherical shape in the first direction Y. The recess portion C 0 can include a flat or concave curved surface in the direction of the second surface S2. At least one or both of the convex surface S11 and concave surface S12 in the above-mentioned area are hazy. e) It can be processed into a plane or prism shape to diffuse light. The haze surface is The resin layer 220 is treated to have a rougher surface than its inner surface, which allows the emitted light to be diffused. Here, as shown in Figure 4, the region of the virtual circle Vc formed by each convex portion P0 is the light source. 100 can be positioned. That is, the maximum distance D between the protrusion P0 and the light source 100. 2 may be smaller than the diameter r0 of the virtual circle Vc. The light at this time is from the light source 100 and Through each convex P0 positioned on a virtual circle that satisfies the maximum distance D2, the directional angle distribution of light is Because it emits light, it can concentrate more light on the target area or in the direction of light propagation. The lighting device 200 according to an embodiment of the invention provides a thickness Z1 in the third direction Z in a line form. This allows for greater design flexibility in linear light sources and provides stable illumination. Furthermore, The uniformity of the overall line light source can be improved. The thickness Z1 of the lighting device 200 is 3 It can be less than or equal to a few millimeters, for example, less than or equal to 3 mm, or it can be in the range of 2.4 mm to 3 mm. Furthermore, the thickness of the resin layer 220 is less than 3 mm, for example, in the range of 1.5 mm to 1.9 mm. The width of the line-shaped surface light source can be made narrower. As another example, the illumination The device 200 may be positioned in the range of 2 mm to 6 mm, in which case the thickness of the resin layer 220 The thickness can be increased to increase the line width and thus increase the light distribution area. The lighting device 200, which has an in-source light source, is applied to vehicle lamps, for example, side marker lights, side lights. Mirror lights, fog lights, taillights, brake lights, auxiliary brake lights, turn signals, position lights Corner lamps, daytime running lights, vehicle interior lighting, door scuffs, rear combination lamps (R Selectively apply from CL, backup lamp, room lamp, and dashboard lighting. The rear combination lamp can function as a brake light, tail light, turn signal, and reverse light. Up lamps may be included. Depending on the car line of the lamps mentioned above It can be supplied as a curved lamp.

[0025] The lighting device disclosed in the first embodiment has multiple light sources 100 arranged on the same straight line, Linear surface light sources emitted through each protrusion P0 are projected forward. In addition, when a virtual straight line connecting each convex part P0 faces the target region, the target region Light is effectively irradiated onto the target area. The target area at this time is arranged at equal intervals from each of the aforementioned protrusions P0. It may be a linear structure. For example, the target area is a lens, for example, an inner - May include a lens or outer lens. Number of light sources 100 in the first embodiment The number of protrusions P0 may be the same as the number of convex parts P0, and there may be two or more along the second direction X, for example, 2 to 1 They may be arranged in the range of 00 or 3 to 40. That is, the third face S3 and the fourth face S4 Two or more light sources 100 are arranged in between. The number of such arrangements of light sources 100 is It can be varied depending on the installation environment and target lighting. On the other hand, the object that is illuminated by the lighting device, In other words, the ramp line in the target area (e.g., car line) is a curved line or a bent line If provided in-app, it can create virtual lines by connecting multiple protrusions or virtual lines by connecting multiple light sources. The inlet has a curved structure or an inclined line according to the ramp line of the target area. Provided. The second embodiment includes the configuration of the first embodiment, but with variations in the position of the light source and the position of the protrusion. This is an example. In the description of the second embodiment, the same configuration as in the first embodiment is described in the description of the first embodiment. We will refer to this.

[0026] Figure 5 is an example of a plan view of the lighting device according to the second embodiment, and Figure 6 is an example of the lighting device of Figure 5. Figure 7 is an enlarged view of area A1, and Figure 5 is an enlarged view of area A2 of the lighting device shown in Figure 5. Figure 8 is an enlarged view of the third region A3 of the lighting device in Figure 5. Lighting device shown in Figures 4 to 8 This is a plan view as seen on the resin layer 220 or the first reflective layer 240. See Figures 5 to 8. Then, as shown in Figure 2, the lighting device 200 consists of a substrate 210, a light source 100, a first reflective layer 240 and A second reflective layer 2 can be included between the substrate 210 and the resin layer 220. 30 is positioned. The second reflective layer 230 reflects light that travels in the direction of the substrate on the substrate 210. It can be reflected and may be removed. The first and second reflective layers 240, 230 are The resin layer 220 reflects the light emitted through the multiple light sources 100, and the resin layer 2 20 guides the light and emits the light through the first surface S1. In the lighting device 200, The multiple light sources 100 are connected by lines in the direction from the third surface S3 to the fourth surface S4, forming a virtual curve Vc0. It is arranged along the line. The virtual curve Vc0 passes through the multiple light sources 100. Yes, it is possible. The aforementioned hypothetical curve Vc0 can pass through the center of each light source 100. The curve Vc0 of the idea is the first light source 101 (hereinafter referred to as the first light source) among the multiple light sources 100. And, with respect to the line L9 connecting the centers of the last light source 109 (hereinafter referred to as the 9th light source), the first surface It can have a directional bulge or positive curvature. Alternatively, it can have a virtual light source passing through multiple light sources 100. The line has a curve that bulges out from the straight line connecting the first light source 101 and the ninth light source 109. , it can expand in the direction of the first plane. A portion of the virtual line passing through multiple light sources 100 is It is positioned behind the second surface S2. The plurality of light sources 100 are arranged in the direction of arrangement of the plurality The line connecting the convex portion P0 from the third surface S3 to the fourth surface S4 follows the virtual curve Vc0. They are arranged as follows. In Figure 2, the first surface S1 of the resin layer 220 has a plurality of protrusions P0 and Multiple recesses C0 may be included. S1 may be the injection-exit surface. That is, even if the first surface S1 of the resin layer 220 is the injection-exit surface Good. In the resin layer 220, the first surface S1 or the ejection surface includes a convex surface S11 and a concave surface S12. It is possible. The convex surface S11 is the outer surface of the convex portion P0, and most of the light is emitted. The concave surface S12 is a recessed surface between the convex portions P0, and light is emitted from it. (Figures 1 and 2) As shown above, the substrate 210, the first reflective layer 240, and the second reflective layer 240 are located on the protrusions of the resin layer 220. This relates to the same structure of the convex and recessed portions as the shape of P0 and recessed portion C0. For the details of this configuration, please refer to the explanation in Figures 1 to 4. Here, the first light source 101 corresponds to Using the first convex part P1 as a reference, a straight line L1 passes through two adjacent convex parts, and the last ninth light source 1 With 09 as the reference point, the interior angle Q2 between the line L2 passing through two adjacent convex parts is an obtuse angle. This is also acceptable. With respect to the straight line L1, two adjacent convex parts are located in the center region A2. The angle Q1 with the straight line L3 passing through is greater than the angle Q2 and may be acute. The straight line L2 connecting the outermost convex parts is at an angle of 70 degrees or less relative to the straight line in the second direction X. It may be provided in degrees. The interior angle Q2 can have a range of 91 degrees to 150 degrees. It can be varied by the housing and bracket lines of the applicable lamp. Here, the plurality The light source 100 is located on the virtual curve Vc0. The center of each of the multiple light sources 100 It is placed on a virtual curve Vc0. Both are orthogonal to two adjacent light sources 100. The spacing G1 and G2 between the lines may be the same. Each intersecting line extends in a direction perpendicular to the longer side of the light source 100. The straight line perpendicular to the light source 100 is in the optical axis direction or with respect to the center of the light source 100. It extends in the direction of the normal. The intervals G1 and G2 are arranged in the same place for a uniform distribution of light. However, they can be placed at different intervals, for example, relatively more than the straight line L3 in the center region. The spacing G2 between separated light sources (e.g., 109) can be narrower than the spacing G1. For uniformity of light, the distances between light sources G1 and G2 are either the same as each other or within the center region. For example, using A2) as a reference, it is possible to narrow a portion of the area (e.g., A3), or to specify The region (e.g., A1) can be made wider. For example, adjacent to the third and fourth faces S3 and S4. The difference in distance between two adjacent light sources can be within 10%. If the difference in spacing exceeds 10%, the light equivalence between light sources adjacent to the third and fourth surfaces S3 and S4 will be affected. The problem is that a single difference can become significant.

[0027] In the lighting device, each of the multiple light sources 100 is directed in the first or second directions Y and X. They are arranged with an inclination or tilt. That is, with respect to the first direction Y, the central axis of each light source 100 They are arranged so as to be inclined. As a result, the intervals G3 and G4 between the straight lines extending the long sides of two adjacent light sources may be horizontal intervals, the smallest in the direction of the third surface S3, and gradually increasing in the direction of the fourth surface S4. That is, it is possible to satisfy G3 < G4 for the intervals. The long side of the light source 100 may be the side surface where the light emitting portion 111 (see FIG. 2) is arranged or the rear surface Sb (see FIG. 6) on the opposite side thereof . That is, the horizontal interval G3 between two adjacent light sources 100 gradually increases as it goes from the first light source 101 in the direction of the fourth surface S4 . The interval Gd between the vertical straight lines between two adjacent light sources 100 may be the same as each other or may have an interval difference within 10%. As a result, when the lighting device is installed along the line of the vehicle lamp, it is possible to have a uniform surface light source distribution on each line . Further, the lighting device is provided with a line light source having a thickness of 3 mm or less, and is provided with a flexible or non-flexible line light source . The light source 100 is arranged on the virtual curve Vc0 . The virtual curve Vc0 is arranged on the straight line connecting the centers of the plurality of light sources 100 . The straight line connecting two adjacent light sources among the plurality of light sources 100 may have an inclination with respect to the first or second directions Y and X. In a region (for example, A1, A3) close to the edge in the lighting device 200, the straight line connecting two adjacent light sources among the plurality of light sources 100 may have different inclinations with respect to the first and second directions Y and X . Here, the inclination of the straight line connecting two light sources adjacent to the fourth surface S4 may be larger than the inclination of the straight line connecting two light sources adjacent to the third surface S3 . As another example . In a region (for example, A1, A3) close to the edge in the lighting device 200, the straight line connecting two adjacent light sources among the plurality of light sources 100 may have different inclinations with respect to the first and second directions Y and X . Here, the inclination of the straight line connecting two light sources adjacent to the fourth surface S4 may be larger than the inclination of the straight line connecting two light sources adjacent to the third surface S3 . That is, the inclination of the straight line connecting two light sources adjacent to the fourth surface S4 may be larger than the inclination of the straight line connecting two light sources adjacent to the third surface S3 . As another example At least two of the lines connecting the two adjacent light sources 100 have the same slope. It can have a straight line connecting the two adjacent light sources 100. At least one or more of these can have different inclinations. Therefore Therefore, in a lighting device, the slope of the straight line connecting two adjacent light sources is the region A1 of the light source. , can be made different by A2 and A3. That is, each area A1, A of the lighting device 2. The inclination of the lines connecting adjacent light sources 100 within A3 is set to be different from each other. For example, in the first region A1, the first group of light sources adjacent to the third surface S3 The area in which the lights are arranged is the second area A2 in which the light source of the second group on the center side is arranged. This is a region, and the third region A3 is where the third group of light sources adjacent to the fourth surface S4 are arranged. It may be a defined area. The number of light sources in each group may be the same or different from each other. That is, the slope increases as you move from the second region A2 to the first region A1, and then to the third region A3 It gets larger as you go further. The rate of increase in the slope at this time is from the second region A2 to the first region A1. The rate of increase in the slope of the straight line extended into the third region A3 is greater than the rate of increase in the slope of the straight line being extended. It's okay if it gets louder.

[0028] The first region A1 extends, for example, to the front of the vehicle when a lighting device is applied to the vehicle's lamp. The area closest to the rear center, and the third area A3 is located at both corners of the front or rear of the vehicle. It may be the nearest region. The convex portion P0 may have a hemispherical shape, a semi-elliptical shape, or an aspherical surface. It may include at least one of the following shapes. The virtual circle Vc formed by the convex portion P0 is, It can include at least one of the following shapes: circular, elliptical, or aspherical ring shape. The radius of curvature or curvature of the concave surface S12 between the convex portions P0 is determined by regions A1, A2, and A3. They may differ. In each region A1, A2, and A3, the radius of curvature of the concave surface S12 is in one direction. Or it may become larger as you go towards the fourth surface S4. The curvature of the concave surface S12 is in one direction or The fourth surface S4 may become smaller as you move towards it. The aforementioned convex portion P0 or convex surface S11 and concave surface S12 The difference in curvature or radius of curvature is greatest in the region close to the third surface S3 and greater in the region close to the fourth surface S4. It may be the smallest in the region. In the illumination device, the maximum length Y1 of the third surface S3 is the fourth surface S The length of 4 may be greater than Y2. This is the first and second regions A1 and A2 within the lighting device. Since components such as circuit patterns and connectors will be placed at the rear, the length of the fourth surface S4 The Y4 can be further reduced. A through-hole H1 is located inside the lighting device 200. A mounting member such as a screw is attached. The second surface S2 of the lighting device 200 has a predetermined curve A portion that protrudes backward from the top, such as a portion to which a connector is attached, can be provided.

[0029] Referring to Figures 6 and 5, in the lighting device 200, the multiple protrusions P0 are the first light source 10 A first protrusion P1 facing 1, a second protrusion P2 facing the second light source 102, and a third light source It may include a third protrusion P3 facing 103. The light source 100 is a light-emitting element. It may also include the first to third light sources 101, 102, 103 or the first to third light-emitting elements. This is possible. The first to third light sources 101, 102, and 103 are arranged on a virtual curve VcO. The point where the virtual curve Vc0 touches or intersects the first light source 101 is the first ground Point Pa is the point that touches or intersects with the second light source 102, and the point Pb is the second point. The point that touches or intersects the third light source 103 may be the third point Pc. The first to Virtual circles Vc formed according to the respective curvatures of the first to third convex portions P1, P2, P3 are provided. At this time, a virtual first straight line Ya passing through the center Px of the virtual circle Vc of the first point Pa and the first convex portion P1, and a virtual second straight line Yb passing through the center Px of the virtual circle Vc of the second point Pb and the second convex portion P2 may be parallel to each other. The second straight line Yb and a virtual third straight line Yc passing through the center Px of the virtual circle of the third point Pc and the third convex portion P3 may be parallel to each other. That is, the straight lines passing through the respective centers of the light sources 100 and the centers Px of the virtual circles Vc having the respective curvatures of the convex portions may be parallel to each other. The first point Pa may be a point where the center of the first light source 101 intersects the virtual curve Vc0. The second point Pb may be a point where the center of the second light source 102 intersects the virtual curve Vc0. A first angle V1 formed by a first tangent Vt1 intersecting the virtual curve Vc0 at the first point Pa and the first straight line Ya may be a first obtuse angle. A second angle V2 formed by a second tangent Vt2 intersecting the virtual curve Vc0 at the second point Pb and the second straight line Yb may be a second obtuse angle. A third angle V3 formed by a third tangent Vt3 intersecting the virtual curve Vc0 at the third point Pc and the third straight line Yc may be a third obtuse angle. The first to third angles V1, V2, V3 may be obtuse angles and different from each other. For example, the first to third angles may satisfy the relationship V1 < V2 < V3. That is, the angles formed by the respective straight lines passing through the centers of the respective light sources 100 and the centers (for example, Px) of the convex portions P0 and the respective tangents at the points where the respective light sources contact the virtual curve are in one direction or the fourth plane direction. curve may be a point where the center of the second light source 102 intersects the virtual curve Vc0. A first tangent Vt1 intersecting the virtual curve Vc0 at the first point Pa and the first straight line Ya form a first angle V1, which may be a first obtuse angle. A second tangent Vt2 intersecting the virtual curve Vc0 at the second point Pb and the second straight line Yb form a second angle V2, which may be a second obtuse angle. A third tangent Vt3 intersecting the virtual curve Vc0 at the third point Pc and the third straight line Yc form a third angle V3, which may be a third obtuse angle. The first to third angles V1, V2, V3 may be obtuse angles and different from each other. For example, the first to third angles may satisfy the relationship V1 < V2 < V3. That is, the angles formed by the respective straight lines passing through the centers of the respective light sources 100 and the centers (for example, Px) of the convex portions P0 and the respective tangents at the points where the respective light sources contact the virtual curve are in one direction or the fourth plane direction. angles may satisfy the relationship V1 < V2 < V3. That is, the angles formed by the respective straight lines passing through the centers of the respective light sources 100 and the centers (for example, Px) of the convex portions P0 and the respective tangents at the points where the respective light sources contact the virtual curve are in one direction or the fourth plane direction. That is, for each light source 100 and each convex portion P0, the angles formed by the respective straight lines passing through the center (for example, Px) and the respective tangents at the points where the respective light sources contact the virtual curve are in one direction or the fourth plane direction. The angle may increase to a certain extent, or it may include a region in which the angle increases. The first to third regions A1, A2, and A3 may be at least one or all of them. The first to third tangents Vt1, Vt2, and Vt3 are located at the center of the first to third light sources 103, respectively. The lines are tangent to the virtual curve Vc0, or to adjacent first and second light sources 101 and 102. A straight line connecting the second and third light sources 102 and 103, and the third light source 103 and adjacent to each other. It may also be a straight line connecting tangent light sources. That is, the first to third tangent lines Vt1, Vt2, Vt3 is in the same direction as the straight line connecting the two adjacent light sources 101, 102, and 103. It may be extended.

[0030] A portion of the light source 100 is a virtual circle Vc or circumference that forms the respective protrusions P1, P2, and P3. It is arranged inside. For example, at least a part of the first light source 101 passes through the first protrusion P1. It is positioned within a virtual circle Vc. At least a portion of the second light source 102 is the second convex portion P2 It is positioned within the virtual circle Vc through which it passes. At least a portion of the third light source 103 is the third convex portion P It is positioned within a virtual circle Vc passing through 3. The virtual circle Vc that forms each of the convex portions P1, P2, and P3. This can be transmitted through each of the light sources 100 facing each of the aforementioned protrusions P1, P2, and P3. The circumference of the virtual circle Vc that forms each of the convex portions P1, P2, and P3 and each of the light sources 100 or The optical elements are arranged so that they overlap or pass through each other. Each of the light sources 100 or light-emitting elements At least one of them coincides with the circumference of the virtual circle Vc that forms each of the convex portions P1, P2, and P3. They are arranged so as not to be. The curvature of each of the convex parts P1, P2, and P3 is the curvature of the virtual circle Vc. The ratio may be the same. The maximum width of each of the convex portions P1, P2, and P3 is the same as the virtual circle Vc. The diameter r0 may be the same as or larger than the respective convex portions P1, P2, P3 and the light source 10 The maximum distance D2 between 0 may be smaller than the diameter r0 of the virtual circle Vc. First region A In 1, the maximum distance D2 between each of the protrusions P1, P2, P3 and the light source 100 is the protrusion P1 The maximum width of P2 and P3 may be smaller. Here, the circle formed by the convex portions P1, P2 and P3 The diameter r0 of Vc may be greater than the thickness Zb of the resin layer 220 disclosed in Figure 2. The first to third lines Ya, Yb, and Yc passing through the vertices Pp of the first to third convex sections P1, P2, and P3 are: With respect to the tangent line Lt at each vertex Pp of the first to third convex portions P1, P2, and P3, the normal It can be extended in the linear direction and have an angle Q3 of 90 degrees. Here, the plurality of light sources 1 00 is positioned at an angle tilted or inclined with respect to the first direction Y or the second direction X, for example. For example, it is positioned at an angle Q4 of less than 90 degrees with respect to the first direction Y. The angle Q4 is 45 degrees or less The angle may be less than 90 degrees upward. Each of the plurality of light sources 100 is tilted at the angle Q4. They may be arranged by gradually shifting in the direction of the second surface. This is the lamp housing. The surface of the bracket can be varied. The concave surface S12 is arranged between the convex surfaces S11. The bottom point can be separated from the virtual curve Vc0. The bottom point of the concave surface S12 is The point within the concave surface S12 is the point closest to the second surface S2. The vertex of the convex portion P0 is each It could be the point that protrudes the most within the convex portion P0, or the point furthest from each light source 100. Looking at the distance between the multiple light sources 100 and the bottom point of the concave surface S12, the distance between the first light source 101 and the second The bottom point (or center) of the recess C0 between the light sources 102 is greater than that of the first light source 102. It may be positioned adjacent to 1. The concave surface between the second light source 102 and the third light source 103 The base point (or center) of S12 is such that it is adjacent to the third light source 103 rather than the second light source 102. They may be arranged such that, on the third surface S3, they are positioned between the two light sources 100, facing the direction of the fourth surface S4. The bottom point or center of the placed concave surface S12 is greater than the adjacent light source 100 in the direction of the third surface S3. It can be adjacent to light sources 100 that are adjacent in the four S4 directions.

[0031] Referring to Figures 5 and 7, the convex portion P0 in the second region A2 is, for example, the 4th to 6th convex portions P4, P5, P6, and the light source 100 are, for example, the 4th to 6th light sources 104, 105, 106 and Let us define the following. The height D4 of the convex portions P4, P5, and P6 in the second region A2 is the height of the adjacent Between the straight line L3 connecting the two touching protrusions and the two adjacent light sources 104, 105, and 106 They may be arranged at the same depth as the distance between the connecting straight lines Vt5. The protrusions P4, P5, The height D4 of P6 is smaller than the diameter r0 of the imaginary circle Vc that forms each of the convex portions P4, P5, and P6. It may be cut. The depth D2 of the recess portion C0 or the depth of the concave surface S12 is the same as the convex portions P4, P5 This is the distance from the vertex of P6 to the bottom of the concave surface S12, and the depth in the second region A2 is the greatest. Larger, the depth in the third region A3 may be the smallest. Maximum depth of the recess C0 This is the distance D2 between the vertices of the 4th to 6th convex parts P4, P5, and P6 and the bottom point of the recess part C0. Furthermore, it may be larger than the diameter r0 of the virtual circle Vc. The depth of the recess C0 is The depth in area 3, A3, may be the smallest, and the depth in area 2, A2, may be the largest. The depth of such a recess C0 is the slope of the straight line connecting two adjacent light sources 100. It is inversely proportional to the size. The concave surface S12 located in the recess C0 is the fourth and fifth light They are positioned between sources 104 and 105, or between the fifth light source 105 and the sixth light source 106, respectively. It is positioned between the two light sources 104, 105, and 106, facing the direction of the fourth surface S4 on the third surface S3. The bottom point or center of the concave surface S12 is adjacent to the fourth light source 104 in the direction of the third surface S3. It can be adjacent to the fifth light source 105 which is adjacent in the S4 direction. The extension portion Sc, which is positioned in the direction of the fourth surface S4 with respect to the light source 104, is the fourth light source 104 Corresponding to the side, the convex surface S11 is arranged in the direction of the fourth surface S4 with reference to the fifth light source 105. The extension Sc can correspond to the fifth light source 105. Such an extension of the convex surface S11 Since Sc is further extended in the direction of the second surface S2, adjacent light sources 104, 105, and 106 The interference of light between them can be reduced. The adjacent fourth to sixth light sources 104, 105, 10 The virtual curve Vc0 or straight line Vt5 connecting the centers of 6 is in contact with the concave surface S12. This allows for emission by the adjacent fourth to sixth light sources 104, 105, and 106. This can block the emitted light from passing through the protrusions of other light sources. The extension Sc is the region of the convex surface S11 that is outside the area of ​​the virtual circle, and extends to the concave surface S12. The following are provided as straight or planar sections. The provisional forms of the fourth to sixth protrusions P4, P5, and P6 The straight line Vx1 connecting the center Px of the circle Vc is the same as the straight line Vt5 connecting the light source and the convex part P It is positioned between the line L3 connecting the vertices 4, P5, and P6. The line Vx1 and line L3 They may be parallel. The line Vx1 and line Vt5 may be parallel. First and second regions A 1. The straight line Vx1, which connects the center Px of the virtual circle Vc in A2, connects the concave surface S12. It is positioned in a convex direction rather than a straight line. As shown in Figure 8, the virtual circle Vc in the third region A3 The straight line Vx2 connecting the centers Px is in the second plane direction, more so than the straight line connecting the concave surfaces S14. They will be placed nearby.

[0032] As shown in Figure 7, the distance D between the concave surface S12 and the center Px of the virtual circle Vc is the distance D between the line connecting them. 5 may be smaller than the radius r1 of the virtual circle Vc. Such distances D5 are 4th to 6th The structure takes into account the directional angle distribution of light sources 104, 105, and 106, and is half of the virtual circle Vc. If the diameter is greater than r1, the rigidity of the module will decrease due to the increase in the depth of the recess C0, The light blocking effect between adjacent light sources becomes minimal. In the virtual circle Vc passing through the fourth protrusion P4 A line Y1a passing through the center Px and the center of the fourth light source 104, and a virtual circle V passing through the fifth convex portion P5. The line Y1b passing through the center Px of c and the center of the fifth light source 105 may be parallel to each other. At this time, the distance D6 between two adjacent virtual circles Vc is greater than the minimum width of the recess C0. It is also acceptable to ask. Here, the minimum width of the recess C0 is the minimum distance between two adjacent surfaces S11. It may be a separation, or the minimum width of the concave surface S12. The light source 100 (104, 105, 1 The distance r2 between (06) and the center Px of the virtual circle Vc is equal to the radius r1 of the virtual circle Vc. It may be even smaller. The distance r2 is the distance between each light source and the circle at each convex part P0. By positioning the central points Px identically, the uniformity of light can be ensured. The radius r1 of the virtual circle Vc formed by the aforementioned protrusion P0 is 5 mm or more, for example, 5 mm to 15 mm. The range can be 8mm to 11mm. Here, adjacent light source 104 The virtual straight line Vt5 formed by connecting 105 and 106 is the angle V between the straight lines Y1a and Y1b. 4 may be an obtuse angle. The angle V4 is greater than angles V1, V2, and V3 in Figure 6. You can listen.

[0033] Referring to Figures 8 and 5, in the third region A3 adjacent to the fourth surface S4, a hypothetical convex portion P0 is formed. The lines Y2a, Y2b, and Y2c passing through the center of the circle Vc and the centers of each light source 108 are parallel to each other. This may be done. Here, the virtual straight line Vt6 formed by connecting adjacent light sources 108 is the same as the straight line Y The angle V5 between 2a, Y2b, and Y2c may be an obtuse angle. The angle V5 is shown in Figure 7. The angle V4 may be greater than the angle V4. Here, with respect to the convex portion P0 adjacent to the fourth surface S4, The 7th to 9th protrusions are referred to as P7, P8, and P9, and the recess C0 is the 7th and 8th recess C7, C We will refer to it as 8. The center Px of the virtual circle VcX passing through the 9th protrusion P9, and the 9th light source. The line Yx passing through the center of 109 may be parallel to the aforementioned lines Y2a, Y2b, and Y2c. The straight line Vx2 connecting the centers Px of the virtual circle VcX is the recess C0 or the concave surface S1 It is possible to gradually move away from point 4.

[0034] Here, the eighth recess C8 between the two protrusions P8 and P9 adjacent to the fourth surface S4 is A virtual circle Vs2 can be formed. The virtual circle Vs2 is formed by the respective protrusions P8, P9 The diameter of the virtual circle VcX forming the shape may be the same as or smaller than the diameter of the 8th recess C8. The virtual circle Vs2 formed by surface S14 is the diameter of the virtual circle VcX, Vc formed by the 9th protrusion P9. The curvature is provided such that the difference between it and the last is 10% or less. That is, the curvature of the 9th convex part P9 and the last The curvatures of the eighth recess C8 can be identical to each other or have a difference of 10% or less. At this time, the distance D21 between the 9th protrusion P9 and the 9th light source 109 is the virtual circle Vs2 It may also be smaller than the diameter of VcX. That is, when the ninth light source 109 is arranged within the circumference of the virtual circle VcX and the radius of curvature of the concave surface S14 of the eighth recess C8 is maximum, the distance D21 may be smaller than the diameters of two adjacent virtual circles Vs2 and VcX. By providing a larger radius of curvature of the concave surface S14 in the region adjacent to such a ninth convex portion P9, the light emitted from the light sources 108 and 109 arranged in the third region A3 passes through the concave surface S14 and is emitted. In an embodiment of the invention, from the third surface S3 towards the fourth surface S4, the curvature of the concave surface S14 or the curvatures of the seventh and eighth recesses C7 and C8 gradually increase, or the curvature of the concave surface S14 or the eighth recess C8 adjacent to the fourth surface S4 may be the largest among the curvatures of the concave surfaces and recesses. This is because the area of the convex portion gradually decreases towards the third region, or may be the largest in the third region A3. This is because as the convex portion gradually moves in the direction of the second surface with respect to the second direction X, the curvature of the connection section of the convex portion can gradually decrease. That is, the radius of curvature of each concave surface S14 or recess C0 (C7, C8) gradually increases as it approaches the fourth surface S4. Looking at the last ninth convex portion P9 and the seventh convex portion P7 separated therefrom, the contact area with the circumference of the virtual circle Vc can gradually decrease towards the ninth convex portion P9. For example, the contact area between the virtual circle VcX passing through the ninth convex portion P9 and the outer edge line of the ninth convex portion P9

[0035] may be less than 1 / 3 or 1 / 4 or less of the circumference length of the virtual circle VcX. And the contact area between the virtual circle Vc passing through the first convex portion P1 in FIG. 6 and the outer edge line of the first convex portion P1 can have 1 / 2 or more or 1 / 3 or more of the circumference length of the virtual circle Vc. In the embodiment of the invention, as going from the third surface S3 towards the fourth surface S4, the curvature of the concave surface S14 or the curvatures of the seventh and eighth recesses C7 and C8 gradually increase, or the curvature of the concave surface S14 or the eighth recess C8 adjacent to the fourth surface S4 may be the largest among the curvatures of the concave surfaces and recesses. This is because the area of the convex portion gradually decreases towards the third region, or may be the largest in the third region A3. This is because as the convex portion gradually moves in the direction of the second surface with respect to the second direction X, the curvature of the connection section of the convex portion can gradually decrease. That is, the radius of curvature of each concave surface S14 or recess C0 (C7, C8) gradually increases as it approaches the fourth surface S4. Looking at the last ninth convex portion P9 and the seventh convex portion P7 separated therefrom, the contact area with the circumference of the virtual circle Vc can gradually decrease towards the ninth convex portion P9. For example, the contact area between the virtual circle VcX passing through the ninth convex portion P9 and the outer edge line of the ninth convex portion P9 may be less than 1 / 3 or 1 / 4 or less of the circumference length of the virtual circle VcX. And the contact area between the virtual circle Vc passing through the first convex portion P1 in FIG. 6 and the outer edge line of the first convex portion P1 can have 1 / 2 or more or 1 / 3 or more of the circumference length of the virtual circle Vc. For example, the contact area between the virtual circle VcX passing through the ninth convex portion P9 and the outer edge line of the ninth convex portion P9 may be less than 1 / 3 or 1 / 4 or less of the circumference length of the virtual circle VcX. And the contact area between the virtual circle Vc passing through the first convex portion P1 in FIG. 6 and the outer edge line of the first convex portion P1 can have 1 / 2 or more or 1 / 3 or more of the circumference length of the virtual circle Vc. This means that the diameter of the virtual circle Vc is the same, and the surface of the convex S13 becomes more convex as you move towards the 9th convex P9. The product can gradually decrease, and the area of ​​the concave surface S14 can gradually increase. Such a fourth surface As you move in the direction, the difference in curvature between the convex surface S13 and the concave surface S13 gradually decreases, and they are connected to each other. Therefore, each light source 100 in the third region A3, which is placed on the virtual curve Vc0, is in the first region Light can be irradiated in the same direction as each light source 100 in A1. Also, the third region In A3, the depths of the 7th and 8th recesses C7 and C8 gradually decrease as you move towards the 4th surface S4 direction. It may become less. As shown in Figures 5 and 8, the further you go in the direction of the fourth surface S4, the more the concave surface forms a temporary The size of the circle of thought gradually increases, or as you move towards the third surface S3 direction, the concave surface forms The size of the virtual circle may gradually decrease.

[0036] Figure 9 shows another example of the invention, where the emission surface of the lighting device 200A is not a curved structure. Yes. The light sources 100, 101A, and 101D of the lighting device 200A are concentrated at the target point Ta. To allow light to be emitted, the center of each light source 100, 101A, and 101D and the convex part P21 are aligned with the target area. They are arranged toward point Ta. That is, each light source 100, 101A, and 101D is directed toward Ta. Light sources 101A and 101D are located at a distance from light source 100, which is perpendicular to the acquisition point Ta. The angle of inclination increases. The protrusions P21 correspond to each light source 100, 101A, and 101D. And the line passing through the center of the convex surface S15 and the centers of each light source 100, 101A, and 101D is the target It can intersect at point Ta. The distance between the target point Ta and each protrusion P21 The distance can be varied depending on the type of lamp.

[0037] Figures 10(A) and (B) show that the center Dx of each light source 102A is the virtual circle Vc which forms the convex portion Pk1. The center Px is aligned, and (A) the center Dx of the light source 102A is on the line of the virtual circle Vc or (B) is positioned on the circumference, with the center Dx of the light source located on the line or circumference of the virtual circle Vc. This is done according to the emission angle emitted from each light source 102A and the radius of curvature of each protrusion Pk1. The position and size K1 of each light source 102A can be adjusted.

[0038] In Figures 11(A) and (B), the light source 102B is a large version of the light source 102A disclosed in Figure 10. It can have a size K2 that is smaller than the size K1. In Figure 11, the size of the light source is That is, the length of the longer side K2 can be less than 5 mm, for example, in the range of 2 mm to 4 mm. In Figure 10, the size of the long side K1 of the light source 102A is 5 mm or more, for example, 5 mm~ It can have a range of 7 mm. This depends on the size of each light source 102A, 102B. As the exit angle on the convex surface S31 changes, the radius of curvature of the convex portion Pk1 will also change.

[0039] Figures 12(A) and (B) show that the convex portion Pk2 is arranged in an elliptical shape with a longer length in the second direction X. In this case, the maximum width of the protrusion Pk2 may be greater than the height. The distance between k2 or the vertex of the convex surface S32 and the light source 103A can be made narrower. The ellipse shape at this time is such that the length in the direction perpendicular to the emission direction of the light source 103A is equal to the output direction of the light source 103A. It may be greater than the length in the direction of firing.

[0040] Figures 13(A) and (B) show that the convex portion Pk3 is arranged in an elliptical shape with a longer length in the first direction Y. In this case, the maximum width of the protrusion Pk3 may be smaller than the height. The distance between k3 or the convex surface S33 and the light source 103A can be increased. At this time, the elliptical shape may have a length in the direction orthogonal to the emission direction of the light source 103A that is smaller than the length in the emission direction of the light source 103A.

[0041] In FIGS. 14(A) and (B), the curve of the convex portion Pk4 includes an aspherical shape, and the center Dx of the light source may overlap with a line of a circle having an aspherical surface or may be disposed inside the line of the circle. Such an aspherical convex surface S34 can diffuse light to prevent hot spots on the center side and further increase the light extraction efficiency on the edge side.

[0042] FIGS. 15(A) to (E) are drawings comparing the distribution of emitted light according to the difference in the distance between the center Px of the virtual circle Vc forming the convex portion and the center Dx of the light source 100. Here, the refractive index of the resin layer can be in the range of 1.2 to 1.7, and the greater the refractive index of the resin layer, the higher the condensing.

[0043] Also, the distribution of the condensed light becomes higher as the center Dx of the light source 100 and the center Px of the virtual circle Vc are farther apart. That is, looking at the distance between the center Dx of the light source 100 and the center Px of the virtual circle Vc, when the center of the virtual circle V70 or the convex portion P71 is 0, (A) has a distance r2 of 5 mm, (B) is 2 mm, (C) is at the same position, (D) is -2 mm, and (E) is -5 mm. Here, since the center Dx of the light source in (D) and (E) irradiates light at a position farther from the center Px of the virtual circle Vc, the light distribution can be further increased.

[0044] FIG. 16 is a drawing showing the emission angle according to the center positions of the light source and the convex portion in an embodiment of the invention. Referring to Figure 16, Snell's law applies to each convex portion or convex surface S11, which is the light source. The position and center Px of the virtual circle Vc, the distance between the center Px of the virtual circle Vc and the light source, the resin layer Using parameters such as refractive index and external refractive index, the angle of incidence and exit on the convex surface S11 are determined. The angle of trajectory can be determined.

[0045] Here, N1 is the refractive index of air (1), and N2 is the refractive index of the resin layer, ranging from 1.2 to 1.7. It can have a range. Looking at Snell's Law, θ1 is relative to the tangent line passing through the imaginary circle. N1 × sinθ is the angle of incidence relative to the normal, and θ2 is the angle of exit relative to the normal. The relationship 1 = N² × sinθ² exists, and the above N1 = sinθ² / sinθ1 is used to determine it. This can be done. Here, the exit angle θ1 can be determined by trigonometric functions, and θ2 is the same as above The distance a between θ1, the light source, and the center Px of the virtual circle Vc, and the parameters h, α, β, b, It can be calculated by first determining r² and then applying Snell's Law. As the light distribution changes, the distance 'a' between the light source and the center of the convex part is adjusted according to the light distribution. It can be saved.

[0046] As shown in Figure 17, the lighting device according to the embodiment is based on the third and fourth surfaces S3 and S4, The curve becomes convex towards the center, either downwards or towards the substrate, or conversely, upwards. Alternatively, it can be bent convexly in the direction of the second reflective layer. As shown in Figure 18, the lighting equipment according to the embodiment The region is an area that bulges upward from the third surface S3 towards the fourth surface S4 or towards the second reflective layer. Between the region and the bulging region or the region adjacent to the bulging region, in a downward direction or It may include at least one recessed region that is recessed in the direction of the substrate. The bulging region and The recessed areas are arranged alternately.

[0047] The embodiments, variations, or alternative examples disclosed above may be selectively mixed with each other or with other examples. The structure can be substituted, and the embodiments disclosed above can be selectively applied to each example. Also, the second, third and fourth surfaces S2, S3, S4 of the resin layer 220, excluding the first surface. A reflective layer or reflective film made of resin material may be attached to it. The reflective film can block light leakage in non-emitting areas.

[0048] Embodiments of the invention provide a lighting device in which the thickness of the resin layer 220 is 3 mm or less. When supplied at a thickness of, for example, 3mm to 6mm, the light-emitting area increases due to the increased thickness of the resin layer 220. The light output increases, and the light distribution is improved. The lighting device according to an embodiment of the invention is shown in Figure 19, with a lamp It can be applied to the following. Examples of lamps used in vehicles include headlights and width lamps. Lights, side mirror lights, fog lights, taillights, brake lights, daytime running lights, vehicle interior Applicable to lighting, door scuffs, rear combination lamps, or backup lamps. That is the case.

[0049] Referring to Figure 19, the lamp has a housing with an inner lens 502. Inside the G503 is a lighting device 200 having the first and second light sources 101 and 103 disclosed above. They may be combined. The thickness of the lighting device 200 is inserted into the internal width of the housing 503. It is possible to insert it. The width Z3 of the output portion 515 of the inner lens 502 is the illumination equipment The thickness may be the same as or twice the thickness of the 200mm element, and a decrease in luminosity can be prevented. The inner lens 502 is positioned at a predetermined distance from the front surface of the illumination device 200, for example, 10 They can be separated by more than mm. On the output side of the inner lens 502, the outer lens A 501 is positioned. A lamp having such a lighting device 200 is just one example, and other The lamp can be applied as a flexible structure, for example, as a curved or curved structure when viewed from the side. It is possible.

[0050] The features, structure, and effects described in the above examples are those of at least one embodiment of the present invention. This includes and is not necessarily limited to a single embodiment. Furthermore, the features illustrated in each embodiment Characteristics, structure, effects, etc., are described by a person with ordinary skill in the field to which the examples belong, and may differ from those described in other examples. The examples can be combined or modified to implement the changes. The content described herein should be interpreted as being within the scope of the present invention.

Claims

1. circuit board and Multiple light sources arranged on the substrate, The substrate and the resin layers arranged on the plurality of light sources, The resin layer includes a first reflective layer disposed on the resin layer, The resin layer includes an emission surface facing the plurality of light sources, The ejection surface of the resin layer includes a plurality of convex portions and a plurality of concave surfaces. Each of the aforementioned plurality of concave surfaces is positioned between adjacent convex portions. The resin layer includes first and second surfaces arranged on opposite sides of each other, and third and fourth surfaces arranged on opposite sides of each other. The first surface is the ejection surface, The first reflective layer includes a plurality of raised regions positioned on each of the plurality of protrusions, The radius of curvature of the concave surface adjacent to the fourth surface within the first surface of the resin layer is greater than the radius of curvature of the concave surface adjacent to the third surface. The system includes a first region adjacent to the third surface where a first group of light sources are arranged, a third region adjacent to the fourth surface where a third group of light sources are arranged, and a second region having a second group of light sources and positioned between the first and third regions. The substrate and the plurality of protrusions overlap in a direction toward the first reflective layer from the substrate, In each of the first to third regions, the first surface of the resin layer has the convex portion and the concave surface, In the first to third regions, the difference between the radius of curvature of the convex portion and the radius of curvature of the concave portion is greatest in the first region, in this lighting device.

2. The lighting device according to claim 1, wherein at least one of the concave surfaces arranged in the second region within the first surface of the resin layer has a radius of curvature greater than the radius of curvature of the concave surface arranged in the first region.

3. The lighting device according to claim 1 or 2, wherein at least one of the concave surfaces arranged in the third region within the first surface of the resin layer has a radius of curvature greater than the radius of curvature of the concave surface arranged in the second region.

4. A substrate and Multiple light sources arranged on the substrate, The substrate and the resin layers arranged on the plurality of light sources, The resin layer includes a first reflective layer disposed on the resin layer, The resin layer includes an emission surface facing the plurality of light sources, The ejection surface of the resin layer includes a plurality of convex portions and a plurality of concave surfaces. Each of the aforementioned plurality of concave surfaces is positioned between adjacent convex portions. The resin layer includes first and second surfaces arranged on opposite sides of each other, and third and fourth surfaces arranged on opposite sides of each other. The first surface is the ejection surface, The first reflective layer includes a plurality of raised regions positioned on each of the plurality of protrusions, The radius of curvature of the concave surface adjacent to the fourth surface within the first surface of the resin layer is greater than the radius of curvature of the concave surface adjacent to the third surface. The system includes a first region adjacent to the third surface where a first group of light sources are arranged, a third region adjacent to the fourth surface where a third group of light sources are arranged, and a second region having a second group of light sources and positioned between the first and third regions. The substrate and the plurality of protrusions overlap in a direction toward the first reflective layer from the substrate, In each of the first to third regions, the first surface of the resin layer has the convex portion and the concave surface, A lighting device in which the difference between the radius of curvature of the convex portion and the radius of curvature of the concave portion is smallest in the third region within the first to third regions.

5. The plurality of light sources include first, second and third light sources, The plurality of protrusions include a first protrusion facing the first light source, a second protrusion facing the second light source, and a third protrusion facing the third light source. The lighting device according to any one of claims 1 to 4, wherein each of the first to third light sources is arranged within first to third virtual circles formed along the outer surfaces of each of the first to third protrusions.

6. The lighting device according to claim 5, wherein a first virtual line passing from the center of the first light source through the center of the first virtual circle formed along the outer surface of the first protrusion, and a second virtual line passing from the center of the second light source through the center of the second virtual circle formed along the outer surface of the second protrusion, are parallel to each other.

7. The region includes a first point where the second virtual circle formed along the outer surface of the second protrusion intersects with the center of the second light source, and a second point where the third virtual circle formed along the outer surface of the third protrusion intersects with the center of the third light source. The lighting device according to claim 5, wherein a first virtual line passing through the center of the second virtual circle and the first point, and a second virtual line passing through the center of the third virtual circle and the second point are parallel to each other.

8. The lighting device according to claim 5, wherein the first to third light sources are arranged in the first region.

9. The first to third light sources are arranged in the third region. The lighting device according to claim 5, wherein the substrate has a plurality of raised regions positioned below each of the plurality of protrusions.

10. The plurality of light sources include a first light source adjacent to the third surface and a second light source adjacent to the fourth surface. The plurality of protrusions include a first protrusion corresponding to the first light source and a second protrusion corresponding to the second light source. The lighting device according to any one of claims 1 to 4, wherein the interior angle between the straight line passing through two adjacent convex portions with respect to the first convex portion and the straight line passing through two adjacent convex portions with respect to the second convex portion is an obtuse angle.

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