Patent Publication Number: US-11658266-B2

Title: Lighting module and lighting apparatus having same

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application is a Continuation Application of U.S. patent application Ser. No. 17/489,099 filed Sep. 29, 2021, which is a Continuation Application of U.S. patent application Ser. No. 16/760,659 filed Apr. 30, 2020, which is a U.S. National Stage Application under 35 U.S.C. § 371 of PCT Application No. PCT/KR2018/013485, filed Nov. 7, 2018, which claims priority to Korean Patent Application No. 10-2017-0151373, filed Nov. 14, 2017, whose entire disclosures are hereby incorporated by reference. 
    
    
     BACKGROUND 
     1. Field 
     An embodiment of the invention relates to a lighting module having a plurality of light emitting devices. 
     An embodiment of the invention relates to a lighting module providing a surface light source having a line shape. 
     Embodiments relate to a lighting apparatus having a lighting module. 
     The embodiment relates to a light unit having a lighting module, a liquid crystal display, and a vehicle lamp. 
     2. Background 
     Conventional lighting applications include not only a vehicle lighting but also a backlight for a display and a signage. 
     A light emitting device, for example, a light emitting diode (LED) has advantages such as low power consumption, semi-permanent lifetime, fast response speed, safety, environmental friendliness compared to conventional light sources such as fluorescent lamps and incandescent lamps. Such an LED has been applied to various lighting devices such as various display devices, indoor lights or outdoor lights, or the like. 
     Recently, a lamp employing an LED has been proposed as a vehicle light source. Compared to incandescent lamps, an LED has an advantage in low power consumption. However, since an emitting angle of light emitted from an LED is small, when the LED is used as a vehicle lamp, it is required to increase a light-emitting area of a lamp using the LED. 
     Since a size of an LED is small, it is possible to increase a degree of freedom of design of a lamp, and the LED has economic efficiency due to the semi-permanent lifetime. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The embodiments will be described in detail with reference to the following drawings in which like reference numerals refer to like elements wherein: 
         FIG.  1    is a perspective view showing a lighting module according to an embodiment of the invention. 
         FIG.  2    is a cross-sectional view along the B-B side of the lighting module of  FIG.  1   . 
         FIG.  3    is a cross-sectional view of the lighting module C-C of  FIG.  1   . 
         FIG.  4    is an example of a partial plan view of the lighting module of  FIG.  1   . 
         FIG.  5    is an example of light extraction of the lighting module of  FIG.  1   . 
         FIG.  6    is an example in which the length of the lighting module of  FIG.  1    is modified. 
         FIG.  7    is an exploded perspective view of the lighting module of  FIG.  1   . 
         FIGS.  8  to  13    are views illustrating a manufacturing process of the lighting module of  FIG.  1   . 
         FIG.  14    is another example of the lighting module of  FIG.  2   . 
         FIG.  15    is an example in which the front side surface is flat in the lighting module according to the embodiment of the invention. 
         FIGS.  16  to  19    are examples of changing the curvature of the convex portion in the lighting module according to the embodiment of the invention. 
         FIGS.  20  to  34    are modified examples of the convex portion and the concave portion in the lighting module according to the embodiment of the invention. 
         FIG.  35    and  FIG.  36    are examples of modifying the distance between the light emitting device and the front side surface in the lighting module according to the embodiment of the invention. 
         FIGS.  37 A and  37 B  are views showing a lighting image and its distribution by the lighting module of  FIG.  1   . 
         FIGS.  38 A and  38 B  are views showing a lighting image and its light distribution by the lighting module of  FIG.  15   . 
         FIG.  39    is an example of a lamp to which a lighting module is applied according to an embodiment of the invention. 
         FIG.  40    is an example of a front view of a light emitting device applied to the lighting module of the embodiment of the invention. 
         FIG.  41    is an example of a module in which the light emitting device of  FIG.  40    is disposed on a circuit board. 
         FIG.  42    is a view of the module of  FIG.  41    as viewed from the other side. 
     
    
    
     DETAILED DESCRIPTION 
     Hereinafter, with reference to the accompanying drawings will be described in detail preferred embodiments that may be easily carried out by the person of ordinary skill in the art. However, it should be understood that the configurations shown in the embodiments and drawings described in this specification are only preferred embodiments of the invention, and that there may be various equivalents and modifications that can replace them at the time of application. 
     In the detailed description of the operating principle for the preferred embodiment of the invention, when it is determined that a detailed description of related known functions or configurations may unnecessarily obscure the subject matter of the invention, the detailed description will be omitted. Terms to be described later are terms defined in consideration of functions in the invention, and the meaning of each term should be interpreted based on the contents throughout the present specification. The same reference numerals are used for parts having similar functions and functions throughout the drawings. 
     The lighting device according to the invention may be applied to various lamp devices that require lighting, such as vehicle lamps, household lighting devices, and industrial lighting devices. For example, when applied to vehicle lamps, head lamps, car lights, side mirror lights, fog lights, tail lamps, brake lights, daytime running lights, vehicle interior lights, door scars, rear combination lamps, backup lamps It is applicable to back. The lighting device of the invention may be applied to indoor and outdoor advertising devices, display devices, and various electric vehicle fields. In addition, it may be applied to all lighting-related fields or advertising-related fields that are currently developed and commercialized or may be implemented according to future technological development. Would say 
     Hereinafter, the embodiments will be apparent through the description of the accompanying drawings and embodiments. In the description of the embodiments, each layer (film), region, pattern or structure is formed “on” or “under” of the substrate, each layer (film), region, pad or patterns. In the case described as, “on” and “under” include both “directly” or “indirectly” formed through another layer. In addition, the criteria for the top or bottom of each layer will be described based on the drawings. 
     &lt;Lighting Module&gt; 
       FIG.  1    is a perspective view showing a lighting module according to an embodiment of the invention,  FIG.  2    is a B-B side sectional view of the lighting module of  FIG.  1   ,  FIG.  3    is a C-C side sectional view of the lighting module of  FIG.  1   , and  FIG.  4    is an example of a partial plan view of the lighting module of  FIG.  1     FIG.  5    is an example of light extraction of the lighting module of  FIG.  1   ,  FIG.  6    is an example of modifying the length of the lighting module of  FIG.  1   , and  FIG.  7    is an exploded perspective view of the lighting module of FIG. 
       FIGS.  1  to  6   , a lighting module  200  according to an embodiment of the invention includes one or a plurality of light emitting devices  105 , and may irradiate with the light emitted from the light emitting devices  105  to a surface light source having line shape. The light emitted from the light emitting device  105  may be emitted as a light source having a constant height in the vertical direction. 
     The lighting module  200  may include a substrate  210 , a resin layer  220  disposed on the substrate  210 , and a second reflective layer  240  disposed on the resin layer  220 . The lighting module  200  may include a first reflective layer  230  between the substrate  210  and the resin layer  220 . 
     As shown in  FIGS.  2  and  3   , the lighting module  200  may have a length X 1  in the first direction X greater than a width Y 1  in the second direction Y. The lengths of the first and second directions X and Y may be greater than the thickness Z 1  or height of the vertical direction Z. The length X 1  in the first direction may vary depending on the number of arrangements of the light emitting devices  105 , for example, may be 30 mm or more. The width Y 1  in the second direction may be 16 mm or more. The width Y 1  of the second direction Y of the lighting module  200  may provide a region in which light emitted from the light emitting device  105  diffuses and a region protecting the rear of the light emitting device  105 . The lighting module  200  may be a flexible module or a rigid module. The lighting module  200  may be flat or flexible with respect to at least one of the first and second directions X and Y. 
     The lighting module  200  may include a front side surface S 1  facing the light emitting device  105 , a rear side surface S 2  opposite the front side surface S 1 , and a plurality of side surface S 3  and S 4  extending from both end portions of the front side surface S 1  and the rear side surface S 2  in the second direction. The rear side surface S 2  extends in the first direction X, and the front side surface S 1  faces the rear side surface S 1  and may include a curved surface. The length of the first direction X of the front side surface S 1  and the rear side surface S 2  may be greater than the height or thickness of the vertical direction. The maximum lengths of the first direction X of the front side surface S 1  and the rear side surface S 2  may be the same or different from each other. The height or thickness in the vertical direction of the front side surface S 1  and the rear side surface S 2  may be the same. The plurality of side surfaces S 3  and S 4  include a first side surface S 3  and a second side surface S 4  facing each other. The front side surface S 1  and the rear side surface S 2  may have a long length in the first direction X. The first side surface S 3  and the second side surface S 4  may face each other in a second direction Y perpendicular to the first direction X. The front side surface S 1  may face the exit surface  111  of the light emitting device  105  or may be a surface exposed in the second direction from the first ends of the first side surface S 1  and the second side surface S 2 . The rear side surface S 2  may face a rear side of the plurality of light emitting devices  105  or may be a surface exposed in the second direction from the second end portions of the first side surface S 3  and the second side surface S 4 . The first side surface S 3  and the second side surface S 4  may be a different side from the front side surface S 1  and the rear side surface S 2 . The rear side surface of the light emitting device  105  may be a surface opposite to the exit surface  111 . 
     Each the side surfaces S 1 , S 2 , S 3 , and S 4  of the lighting module  200  may be each side surface of the resin layer  220  having the thickest thickness in the lighting module  200 . 
     The plurality of light emitting devices  105  may be arranged in the first direction in the lighting module  200 . Two or more light emitting devices  105  may be disposed in the first direction, and may be, for example, n (n=2 or more). The plurality of light emitting devices  105  may be arranged on a straight line extending in the first direction X. The plurality of light emitting devices  105  may be arranged in one row. In another example, the plurality of light emitting devices may be arranged in two rows, and the two rows of light emitting devices may be arranged in a zigzag form. A front side or the exit surface of the light emitting device  105  may be exposed toward the second direction Y. The side surface or rear side of the light emitting device  105  may be a non-exit surface. 
     The plurality of light emitting devices  105  may face the front side surface S 1 . The exit surfaces  111  of the plurality of light emitting devices  105  may face the front side surface S 1 . The light emitted from the light emitting device  105  is emitted through the front side surface S 1 , and some light may be emitted through at least one of the rear side surface S 2 , the first side surface S 3 , and the second side surface S 4 . That is, most of the light emitted from the light emitting device  105  may be emitted through the front side surface S 1 . 
     As shown in  FIG.  4   , the distance D 2  between the light emitting device  105  and the front side surface S 1  and the distance D 3  between the light emitting device  105  and the rear side surface S 2  based on the light emitting device  105  may be different from each other. The distance D 3  between the light emitting device  105  and the rear side surface S 2  may be 2 mm or more, for example, in a range of 2 mm to 20 mm. When the distance D 3  between the light emitting device  105  and the rear side surface S 2  is smaller than the above range, the region where moisture may penetrate or form a circuit pattern may be small, and when the distance D 3  is larger than the above range, a size of the lighting module  200  may increase. The distance D 2  is a maximum distance, may be 5 mm or more, and may range from 5 mm to 20 mm. When the distance D 2  is smaller than the above range, hot spots may be generated, and when the distance D 2  is larger than the above range, the module size may increase. 
       FIGS.  1  to  3   , the lighting module  200  may include a plurality of convex portions P 0 : P 1 , P 2 , and P 3  and at least one concave portion C 1  and C 2 . The plurality of convex portions P 0 : P 1 , P 2 , P 3  may be at least two or n (n=2 or more). The plurality of convex portions P 0 : P 1 , P 2 , and P 3  may be disposed in the first direction in which the plurality of light emitting devices  105  may be arranged, and may protrude convexly in the second direction orthogonal to the first direction. The plurality of convex portions P 0 : P 1 , P 2 , and P 3  may face the plurality of light emitting devices  105 . Each of the plurality of convex portions P 0 : P 1 , P 2 , and P 3  may protrude in a direction away from each of the light emitting devices  105 :  101 ,  102 , and  103 . That is, the convex portions P 0 : P 1 , P 2 , and P 3  may have a distance from the light emitting device  105  as the region facing the center of the light emitting device  105  may be increase. 
     Each of the convex portions P 0 : P 1 , P 2 , and P 3  may protrude in the direction of the front side surface S 1  with respect to each of the light emitting devices  105 . The recesses C 1  and C 2  may be recessed toward the rear side surface S 2  with respect to the front side surface S 1 . The convex portions P 1 , P 2 , and P 3  may include convex curved surfaces. The concave portions C 1  and C 2  may include concave curved surfaces. The convex portions P 1 , P 2  and P 3  may have a first curvature, and the second concave portions C 1  and C 2  may have a second curvature having a radius smaller than the radius of the first curvature. 
     In the convex portions P 0 : P 1 , P 2 , and P 3 , the front side surface S 1  has a constant height, and the upper surface and the lower surface may be provided as horizontal planes. The front side surface S 1  may be provided as a vertical surface in the third direction Z. The rear side surface S 2 , the first side surface S 3 , and the second side surface S 4  may be provided as vertical surfaces in the third direction. The rear side surface S 2  may be arranged in a direction perpendicular to the first side surface S 3  and the second side surface S 4 . The third direction Z may be a direction orthogonal to the first and second directions X and Y. As another example, the front side surface S 1  may include a surface inclined with respect to the third direction Z. The front side surface S 1 , the rear side surface S 2 , the first side surface S 3 , and the second side surface S 4  may have the same thickness or the same height in the third direction Z. 
     The resin layer  220  may be disposed between the substrate  210  and the second reflective layer  240 . The resin layer  220  may be disposed between the upper surface of the substrate  210  and the lower surface of the second reflective layer  240 . The resin layer  220  includes the front side surface S 1 , the rear side surface S 2 , the first side surface S 3 , and the second side surface S 4 . The resin layer  220  may surround or embed the plurality of light emitting devices  105  disposed on the substrate  210 . 
     The lighting module  200  may include the first reflective layer  230  between the resin layer  220  and the substrate  210 . The resin layer  220  may be a transmissive layer. The resin layer  220  is a different material, and may include a glass material. 
     The plurality of light emitting devices  105 :  101 ,  102 ,  103  are, for example, a first light emitting device  101  adjacent to the first side surface S 3 , a third light emitting device  103  adjacent to the second side surface S 4 , and the at least one or two or more second light emitting devices  102  disposed between the first and third light emitting devices  101  and  103 . As described below, the number of the light emitting devices may be n (n is 2 or more), and for convenience of description, three light emitting devices will be described as an example. 
     The convex portions P 1 , P 2 , and P 3  may include a first convex portion P 1  corresponding to the first light emitting device  101 , a second convex portion P 2  corresponding to the second light emitting device  102 , and a third convex portion P 3  corresponding to the third light emitting device  103 . The concave portions C 1  and C 2  may include a first concave portion C 1  disposed between the first and the second convex portions P 2  and P 3 , and a second concave portion C 2  disposed between the second and third convex portions P 2  and P 3 . Each of the first to third convex portions P 1 , P 2 , and P 3  may face the exit surface  111  of each of the first to third light emitting devices  101 ,  102 , and  103 . 
     The first convex portion P 1  overlaps with the first light emitting device  101  in the second direction Y, and the second convex portion P 2  overlaps with the second light emitting device  102  in the second direction Y, and the third convex portion P 3  may be overlapped with the third light emitting device  103  in the second direction Y. Each of the first to third convex portions P 1 , P 2 , and P 3  is disposed to overlap each of the first to third light emitting devices  101 ,  102 , and  103  in the second direction, and may diffuse the light emitted from the exit surface  111  of the first to third light emitting devices  101 ,  102 ,  103 . To this end, the first to third convex portions P 1 , P 2 , and P 3  may overlap each exit surface  111  of the first to third light emitting devices  101 ,  102 , and  103  in the second direction Y. 
     The first to third convex portions P 1 , P 2 , and P 3  may overlap in the first direction, and the first and second concave portions C 1  and C 2  may overlap in the first direction. Among the convex portions P 0 : P 1 , P 2 , and P 3 , a region overlapped with the light emitting devices  105 :  101 ,  102 , and  103  in the second direction may be closer to a higher point of the convex portion P 0  than the concave portions C 1 , C 2 . 
     The first concave portion C 1  may overlap a region between the first and second light emitting devices  101  and  102  in the second direction, and the second concave portion C 2  may overlap a region between the second and third light emitting devices  102  and  103  in the second direction. The first and second recesses C 1  and C 2  may transmit or reflect some incident light. The first and second concave portions C 1  and C 2  may suppress the occurrence of dark portions in the region between the first to third light emitting devices  101 ,  102  and  103 . 
     The substrate  210  includes a printed circuit board (PCB), for example, a resin-based printed circuit board (PCB), a metal core PCB, a flexible PCB, and a ceramic PCB, or FR-4 substrate. The substrate  210  may be a flexible or non-flexible material. A circuit pattern may be disposed on the substrate  210 . The circuit pattern of the substrate  210  may include a plurality of pads on a region corresponding to the light emitting device  105 . 
     Among the regions of the substrate  210 , a rear region based on the light emitting device  105  is a region opposite to a region where light is emitted, and may be a region in which a circuit patterns for connecting the light emitting devices  105  may be disposed. The width of the rear region may vary depending on the number of the light emitting devices  105  or the connection method of the light emitting devices  105 . The width of the rear region is the distance D 3  between the light emitting device  105  and the rear side surface S 2 , and may be provided in 2 mm or more. Accordingly, it is possible to suppress the penetration of moisture from the rear side of the light emitting device  105  and the circuit patterns for connecting the plurality of light emitting devices  105  may form. 
     The plurality of light emitting devices  105  may be provided with bonding portions thereunder and electrically connected to pads of the substrate  210 . The plurality of light emitting devices  105  may be connected in series by the circuit patterns of the substrate  210 . As another example, the plurality of light emitting devices  105  may be connected in parallel by circuit patterns of the substrate  210 , or two or more groups connected in series may be connected in parallel. 
     The light emitting device  105  may include a device having a light emitting chip or a package in which an LED chip is packaged. The light emitting chip may emit at least one of blue, red, green, and ultraviolet (UV) light. The light emitting device  105  may emit at least one of white, blue, red, and green. The light emitting device  105  emits light in a lateral direction and a bottom portion thereof may be disposed on the substrate  210 . The light emitting device  105  may be a side view type package. As another example, the light emitting device  105  may be an LED chip, and one surface of the LED chip may be opened and a reflective member may be disposed on the other surface. 
     The exit surface  111  of the light emitting device  105  may be disposed on a surface adjacent to the substrate  210 , for example, and may be disposed on a side surface adjacent to the upper surface of the substrate  210 . The exit surface  111  is disposed to the side surface between the bottom and the upper surface of the light emitting device  105 , and emits light in the second direction Y. The exit surface  111  of the light emitting device  105  may be a surface adjacent to the first reflective layer  230  and may be a perpendicular surface to the upper surface of the substrate  210  and the upper surface of the first reflective layer  230 . 
     The thickness of the light emitting device  105  may be smaller than the length of the first direction X of the light emitting device  105 . The thickness of the light emitting device  105  may be 3 mm or less, for example, 2 mm or less. The thickness of the light emitting device  105  may be in the range of 1 mm to 2 mm, for example, in the range of 1.2 mm to 1.8 mm. 
     The length of the light emitting device  105  in the first direction X may be greater than the thickness of the light emitting device  105 , for example, may be 1.5 times or more the thickness of the light emitting device  105 . Since the light emitting device  105  has a thin thickness and a long length in the first direction, the light exit angle in the first direction X in the left-right direction based on the center of the light emitting device  105  may be widely provided. Here, the light exit angle of the light emitting device  105  in the first direction X may be greater than the light exit angle of the third direction Z in the up-down direction. The light exit angle of the first direction of the light emitting device  105  may have a range of 110 degrees to 160 degrees. The length of the first direction X of the light emitting device  105  may be greater than the width of the second direction of the light emitting device  105 . 
     Here, as shown in  FIG.  2   , the thickness Za of the substrate  210  may be smaller than the thickness of the light emitting device  105 . The thickness of the light emitting device  105  may be two or more times the thickness Za of the substrate  210 , for example, may range from 2 to 4 times. Since the thickness Za of the substrate  210  is provided thin, the lighting module  200  may be provided as a flexible plate. 
     As shown in  FIGS.  2  to  4   , the resin layer  220  may be disposed on the substrate  210 . The first reflective layer  230  may be disposed between the resin layer  220  and the substrate  210 . The resin layer  220  may cover the light emitting device  105 . The resin layer  220  may contact the upper surface and side surfaces of the light emitting device  105 . The resin layer  220  may contact the upper surface of the first reflective layer  230 . A portion of the resin layer  220  may contact the substrate  210  through the first reflective layer  230 . The resin layer  220  may contact the exit surface  111  of the light emitting device  105 . The front side surface S 1 , the rear side surface S 2 , the first side surface S 3  and the second side surface S 4  of the resin layer  220  are side surfaces between the first and second reflective layers  230  and  240 . The front side surface S 1 , the rear side surface S 2 , the first side surface S 3  and the second side surface S 4  may be a periphery surfaces of the light emitting device  105  or surfaces corresponding to the side surfaces of the light emitting device  105 . 
     An area of the upper surface of the resin layer  220  may be the same as an area of the upper surface of the substrate  210 . The area of the upper surface of the resin layer  220  may be the same as an area of the upper surface of the first reflective layer  230 . The area of the upper surface of the resin layer  220  may be the same as the area of the upper surface of the second reflective layer  240 . The length X 1  of the resin layer  220  in the first direction may be the same as the length of the substrate  210 . The length X 1  of the resin layer  220  in the first direction may be the same as the length of the first reflective layer  230 . The length X 1  of the resin layer  220  in the first direction may be the same as the length of the second reflective layer  240 . The maximum width Y 1  of the resin layer  220  in the second direction may be the same as the maximum width of the substrate  210 . The maximum width Y 1  of the resin layer  220  in the second direction may be the same as the maximum width of the second reflective layer  240 . The minimum width of the resin layer  220  in the second direction may be the same as the minimum width of the substrate  210 . The minimum width of the resin layer  220  in the second direction may be the same as the minimum width of the first reflective layer  230 . The minimum width of the resin layer  220  in the second direction may be the same as the minimum width of the second reflective layer  240 . The maximum width in the second direction is the length between the peak of the convex portions P 1 , P 2 , and P 3  of the lighting module and the rear side surface S 2 , and the minimum width may be a length between the lower point of the concave portions C 1  and C 2  of the lighting module and the rear side surface S 2 . 
     The resin layer  220  may be disposed between the first and second reflective layers  230  and  240 . The first and second reflective layers  230  and  240  may have the same area and face each other on the lower surface and the upper surface of the resin layer  220 . Accordingly, the resin layer  220  may diffuse light emitted from the light emitting device  105  and light reflected by the first and second reflective layers  230  and  240  to guide the lateral direction. 
     The resin layer  220  may be formed to a thickness Zb greater than the thickness of the light emitting device  105 . Accordingly, the resin layer  220  may protect the upper portion of the light emitting device  105  and prevent moisture penetration. Since the substrate  210  is disposed under the light emitting device  105  and the resin layer  220  is disposed on the light emitting device  105 , the light emitting device  105  may be protected. Therefore, an interval between the upper surface of the resin layer  220  and the light emitting device  105  may be arranged in a range of 0.6 mm or less, for example, 0.5 mm to 0.6 mm. The upper portion of the resin layer  220  is disposed at the same thickness as the interval, thereby protecting the upper portion of the light emitting device  105 . 
     The thickness Zb of the resin layer  220  may be an interval between the upper surface and the lower surface of the resin layer  220 . The thickness Zb of the resin layer  220  may be a distance between the first and second reflective layers  230  and  240 . The thickness Zb may be equal to a distance (e.g., Zb) between the first and second reflective layers  230  and  240 . The thickness Zb may be smaller than the distance between the front side surface S 1  and the rear side surface S 2 . For example, the distance between the front side surface S 1  and the rear side surface S 2  may include the maximum width or the minimum width. The maximum width may be a straight line distance between the high point of the convex portions P 1 , P 2 , and P 3  and the rear side surface S 2 . The distance or interval between the first and second side surfaces S 3  and S 4  of the resin layer  220  may be greater than the distance between the high point of the convex portions P 1 , P 2 , and P 3  and the rear side surface S 2 . The minimum width may be a straight line distance between the bottom of the concave portions C 1  and C 2  and the rear side surface S 2 . The distance or interval between the first reflective layer  230  and the second reflective layer  240  may be smaller than the distance or interval between the front side surface S 1  and the rear side surface S 2  of the resin layer  220 . By arranging the distance between the first and second reflecting layers  230  and  240  smaller than the width Y 1  or the minimum width in the second direction of the lighting module  200 , a line-form surface light source is provided, and a brightness and hot spots may prevent. In addition, the lighting module may be provided with flexible characteristics that may be convex or concave in the third direction. 
     The thickness Zb of the resin layer  220  may be 2 times or less than the thickness of the light emitting device  105 , and may be, for example, more than 1 to 2 times. The thickness Zb of the resin layer  220  may be, for example, in the range of 1.5 mm to 1.9 mm or in the range of 1.6 mm to 1.8 mm. The thickness Zb of the resin layer  220  may be 0.8 times or less the thickness Z 1  of the lighting module  200 , for example, and may be in a range of 0.4 to 0.8 times the thickness Z 1  of the lighting module  200 . Since the thickness of the resin layer  220  is disposed at a difference of 1.2 mm or less from the thickness Z 1  of the lighting module  200 , a decrease in light efficiency in the lighting module  200  may prevent and the ductility characteristics may enhance. 
     The resin layer  220  may include a resin material such as silicone, silicone molding compound (SMC), epoxy, or epoxy molding compound (EMC). The resin layer  220  may optionally include an ultraviolet (UV) curable resin or a heat curable resin material, and PC, OPS, PMMA, PVC, and the like. For example, a resin material having a urethane acrylate oligomer as a main raw material may be used as the main material of the resin layer  220 . For example, a urethane acrylate oligomer which is a synthetic oligomer may be used by mixing with a polyacrylic polymer type. Of course, the low-boiling dilution type reactive monomers such as IBOA (isobornyl acrylate), HPA (Hydroxyl propyl acrylate, 2-HEA (2-hydroxyethyl acrylate), etc.) may further include a mixed monomer, and may be mixed a photo initiator (for example, 1-hydroxy cyclohexyl phenyl-ketone, etc.) or antioxidants as an additive. 
     A bead (not shown) may be included in the resin layer  220 , and the bead may diffuse and reflect incident light, thereby increasing the amount of light. The resin layer  220  may include a phosphor. The phosphor may include at least one of a yellow phosphor, a green phosphor, a blue phosphor, and a red phosphor. 
     The region where the convex portions P 1 , P 2 , and P 3  are formed in the resin layer  220  may be provided as a lens portion. The lens portion of the resin layer  220  is provided in a lens shape having a convex curved surface, and may include a hemispherical shape when viewed from a top view. The distance from the light emitting device  105  to the lens portion may be further spaced apart from the region of lens portion that corresponds to the center of the light emitting device  105 . The thickness of the lens portion in the third direction may be the thickness Zb of the resin layer  220 . Since the upper and lower surfaces of the lens portion are flat and curved surfaces are formed toward the front side surface S 1 , light incident in a direction of the front side surface S 1  may be diffused. The lens portion is disposed between the first and second reflective layers  230  and  240  which are flat on the upper and lower portions of the lens portions, so that light may be emitted by refracting light to the front side surface S 1 . The lens portion may refract light incident on a region outside the optical axis based on an optical axis at an exit angle greater than an incident angle. 
     In the resin layer  220 , the concave portions C 1  and C 2  disposed between the convex portions P 1 , P 2  and P 3  are provided as recesses recessed in a direction of the rear side surface S 2 , and the concave portions C 1  and C 2  may include a concave curved surface or a curved surface having an inflection point. The recesses of the resin layer  220  may be formed as a concave curved surface on the surface of the resin layer  220  to refract the incident light. The recesses of the concave portions C 1  and C 2  refract light emitted from the light emitting device  105  on the region between the lens portions, thereby suppressing the occurrence of dark portions. 
     Here, when the convex portions P 1 , P 2  and P 3  and the concave portions C 1  and C 2  are disposed on the resin layer  220 , the substrate  210  and the first and second reflective layers  230  and  240  has a shape corresponding to shapes of the convex portion and the concave portion. The convex portions P 1 , P 2 , and P 3  or the lens portion of the resin layer  220  may be the same as the number of the light emitting devices  105 . 
     The first reflective layer  230  may reflect light emitted from the light emitting device  105 . The first reflective layer  230  may be formed on the upper surface of the substrate  210 . The first reflective layer  230  may be formed as an upper layer of the substrate  210  or may be formed as a separate layer. The first reflective layer  230  may be adhered to the upper surface of the substrate  210  with an adhesive. The resin layer  220  may be adhered to the upper surface of the first reflective layer  230 . 
     The first reflective layer  230  is provided with a plurality of holes  232  in a region corresponding to the lower surface of the light emitting device  105 , and the light emitting device  105  may be connected to the substrate  210  through the hole  232 . A portion of the resin layer  220  may contact the substrate  210  through the hole  232 . The hole  232  may be a region where the light emitting device  105  is bonded to the substrate  210 . 
     The first reflective layer  230  may be formed in a single layer or multilayer structure. The first reflective layer  230  may include a material that reflects light, for example, a metal or non-metal material. When the first reflective layer  230  is a metal, the first reflective layer  230  may include a metal layer such as stainless, aluminum (Al), or silver (Ag). When the first reflective layer  230  is a non-metallic material, the first reflective layer  230  may include a white resin material or a plastic material. The first reflective layer  230  may include a white resin material or a polyester (PET) material. The first reflective layer  230  may include at least one of a low reflection film, a high reflection film, a diffuse reflection film, or a regular reflection film. The first reflective layer  230  may be provided as, for example, a regular reflection film for reflecting incident light to the front side surface S 1   
     The thickness Zc of the first reflective layer  230  may be smaller than the thickness Za of the substrate  210 . The thickness Zc of the first reflective layer  230  is disposed at least 0.5 times the thickness Za of the substrate  210 , thereby reducing transmission loss of incident light. The thickness Zc of the first reflective layer  230  may be in the range of 0.2 mm to 0.4 mm, and when it is smaller than the above range, light transmission loss may occur, and when it is thicker than the above range, the thickness Z 1  of the lighting module  200  may increase. 
     The second reflective layer  240  may be disposed on the resin layer  220 . The second reflective layer  240  may be adhered to the upper surface of the resin layer  220 . The second reflective layer  240  is disposed in the entire region of the upper surface of the resin layer  220 , thereby reducing light loss. 
     The second reflective layer  240  may be formed of the same material as the first reflective layer  230 . The second reflective layer  240  may have a material having a higher light reflectivity than the material of the first reflective layer  230  or a thicker thickness in order to reflect light and reduce light transmission loss. The second reflective layer  240  may be the same thickness as the first reflective layer  230  or a thicker thickness. For example, the first and second reflective layers  230  and  240  may be provided with the same material and the same thickness. 
     The thickness Zd of the second reflective layer  240  may be smaller than the thickness Za of the substrate  210 . The thickness Zd of the second reflective layer  240  is disposed at least 0.5 times the thickness Za of the substrate  210 , thereby reducing transmission loss of incident light. The thickness Zd of the second reflective layer  240  may be in the range of 0.2 mm to 0.4 mm, and when it is smaller than the above range, light transmission loss may occur, and when it is thicker than the above range, the thickness Z 1  of the lighting module  200  may increase. 
     The second reflective layer  240  may be formed in a single layer or multilayer structure. The second reflective layer  240  may include a material that reflects light, for example, a metal or non-metal material. When the second reflective layer  240  is a metal, the second reflective layer  240  may include a metal layer such as stainless, aluminum (Al), silver (Ag), and when the second reflective layer  240  is a non-metallic material, the second reflective layer  240  may include a white resin material or a plastic material. The second reflective layer  240  may include a white resin material or a polyester (PET) material. The second reflective layer  240  may include at least one of a low reflection film, a high reflection film, a diffuse reflection film, or a regular reflection film. The second reflective layer  240  may be provided as, for example, a regular reflection film so that incident light proceeds in a direction of the front side surface S 1 . 
     A stacked structure of the substrate  210 , the first reflective layer  230 , the resin layer  220 , and the second reflective layer  240  may include the convex portions P 1 , P 2 , P 3  and the concave portions C 1  and C 2 . An upper surface and a lower surface of the convex portions P 1 , P 2 , and P 3  have a flat shape, and may include a curved surface or a hemispherical shape in the first direction. The concave portions C 1  and C 2  may include the concave curved surface in a direction of the rear side surface S 2 . 
     The convex curved surface and the concave curved surface in the resin layer  220  may be formed as a haze surface to diffuse light. The haze surface may be treated as a rough surface than the inner surface of the resin layer  220  to diffuse the emitted light. 
     The lighting module  200  according to an embodiment of the invention may provide a thickness Z 1  in the third direction in a line form, thereby providing ductility and providing a line-shaped surface light source. The lighting module  200  may have a thickness Z 1  of 3 mm or less. That is, the lighting module  200  may be provided as a surface light source having a line shape of 3 mm or less. As another example, the lighting module  200  may be arranged to be 6 mm or less larger than 3 mm, in this case, the thickness of the lighting module  200  is increased, but the thickness of the resin layer  220  is provided thicker to increase the line width and the light distribution area may increase. 
     Referring to  FIG.  2   , when the thickness of each component in the lighting module  200 , the thickness of the substrate  210  is Za, the thickness of the resin layer  220  is Zb, the thickness of the first reflective layer  230  is Zc and the thickness of the second reflective layer  240  is Zd, and there have the relationship of Zb&gt;Za&gt;Zd≥Zc. The interval between the upper surfaces of the second reflective layer  240  and the lower surface of the substrate  210  is the thickness Z 1  of the lighting module  200 . The thickness Zb is a ratio of 0.4 to 0.8 of Z 1 , the thickness Za is a ratio of 0.14 to 0.18 of Z 1 , and the thickness Zd or Zc may have a ratio of 0.08 to 0.12 of Z 1 . The Zb may have a ratio of 3.5 to 4 of Za. The Zb may have a ratio of 5.8 to 6.4 of Zc or Zd. The thickness Zb of the resin layer  220  is disposed to be thicker than the thickness Za of the substrate  210 , so that the light emitting device  105  may be protected and guided by diffusing light and strengthening ductility characteristics. 
     Referring to  FIG.  4   , the maximum width W 1  of the convex portions P 1 , P 2  and P 3  in the first direction is a distance between the adjacent concave portions C 1  and C 2 , and may be equal to or smaller than the pitch G 1  of the light emitting devices  105 . When the maximum width W 1  of the convex portions P 1 , P 2 , and P 3  is greater than the pitch G 1  between the light emitting devices  105 , two or more light emitting devices on a region of the convex portions P 1 , P 2 , P 3   105  may be arranged and may increase the luminosity. When the maximum width W 1  of the convex portions P 1 , P 2 , and P 3  is smaller than the pitch G 1  between the light emitting devices  105 , the size of the convex portions P 1 , P 2 , and P 3  becomes small, and the light may provide in a uniform distribution, but the luminous intensity may be reduced. 
     The maximum width W 1  of the convex portions P 1 , P 2 , and P 3  may be 15 mm or more, for example, in a range of 15 mm to 20 mm. The maximum width W 1  of the convex portions P 1 , P 2 , and P 3  may be larger than the depth D 4  of the concave portions C 1  and C 2 . The ratio of the maximum width W 1  of the convex portions P 1 , P 2 , and P 3  and the depth D 4  of the concave portions C 1 , C 2  may range from 1:0.4 to 1:0.7. When the depths of the concave portions C 1  and C 2  are smaller than the above range, the dark region may be increased between adjacent convex portions P 1 , P 2  and P 3 . When the depths of the concave portions C 1  and C 2  are greater than the above ranges, the light interference between the light emitting devices  105  may increase by proceeding to a region adjacent to the light emitting devices  105 . The depth D 4  of the concave portions C 1  and C 2  may be a straight-line distance from a straight line connecting the peaks of the convex portions P 1 , P 2  and P 3  to the lower points of the concave portions C 1  and C 2 . 
     The curved surfaces of the convex portions P 1 , P 2  and P 3  and the curved surfaces of the concave portions C 1  and C 2  may have curvature. The radius of curvature of the convex portions P 1 , P 2 , and P 3  may be 8 mm or more, for example, 8 mm to 14 mm or 9 mm to 11 mm. When the radius of curvature of the convex portions P 1 , P 2 , and P 3  is smaller than the above range, the improvement of luminous intensity is minimal, and when it is larger than the above range, a dark portion may be generated. 
     The radius of curvature of the concave portions C 1  and C 2  may be ⅛ times smaller than the radius of curvature of the convex portions P 1 , P 2 , and P 3 . The ratio of the radius of curvature of the concave portions C 1  and C 2  and the radius of curvature of the convex portions P 1 , P 2  and P 3  may range from 1:8 to 1:28. When the radius of curvature of the concave portions C 1  and C 2  is smaller than the above range, the amount of light emitted through the concave portions C 1  and C 2  may be reduced to increase the dark portion, and when it is larger than the range, the convex portions P 1  and P 2 , P 3  may be reduced in size, and optical interference between the light emitting devices  105  may occur. Accordingly, the depths D 4  and the radius of curvature of the concave portions C 1  and C 2  take into account the position of the light emitting device  105  and an angle of beam spread of the light emitting device  105 , and may range the improvement of light uniformity by the recesses C 1  and C 2  and the convex portions P 1 , P 2 , and P 3  and the suppression of dark portion by the recesses C 1  and C 2 . The radius of curvature of the concave portions C 1  and C 2  may range from 0.5 to 1 mm. Since the concave portions C 1  and C 2  have a predetermined curvature and are provided in a curved shape, the incident light may be refracted and transmitted, thereby reducing the occurrence of dark portions in the concave portions C 1  and C 2 . 
     The region between the peak of the convex portions P 1 , P 2 , and P 3  and the light emitting device  105  is a region for diffusing light and emitting it with a uniform light distribution, which may be defined as a light diffusion region or a light guide region. The interval between the peak of the convex portions P 1 , P 2 , and P 3  and the light emitting device  105  may range of 13 mm or more, for example, may range from 13 mm to 20 mm. The interval between the peak of the convex portions P 1 , P 2 , and P 3  and the light emitting device  105  may be provided in a uniform distribution through light diffusion when in the range, and when the interval between the convex portions P 1 , P 2  and P 3  and the light emitting device  105  is smaller than the above range, a hot spot may be generated, and when it is larger than the above range, the luminous intensity may decrease and the size of the module may increase. The interval between the convex portions P 1 , P 2 , P 3  and the light emitting device  105  may be larger than the radius of curvature of the convex portions P 1 , P 2 , and P 3 , for example, and may be in a range of 1.3 times or more or 1.3 to 2.0 times of the radius of curvature of the convex portions P 1 , P 2 , and P 3 . 
     The interval D 1  between the concave portions C 1  and C 2  and the straight lines connecting the light emitting devices  105  may be smaller than the depth D 4  of the concave portions C 1  and C 2 . The interval D 1  may be 5 mm or more, for example, in a range of 5 mm to 12 mm, and when it is smaller than the interval D 1 , the depth D 4  of the concave portions C 1  and C 2  is deepened or a distance D 2  between the light emitting device  105  and the convex portions P 1 , P 2 , and P 3  may be narrowed, and a dark portion may be generated in the concave portions C 1 , C 2  or a hot spot may be generated in the convex portions P 1 , P 2 , and P 3 . 
     Referring to  FIG.  5   , among the light emitted from the light emitting device  105 , the light L 1  traveling in the optical axis direction passes through the center of the convex portions P 1 , P 2 , and P 3 , and the light L 2  emitted around the optical axis is emitted at an exit angle greater than the incident angle, thereby diffusing light. In addition, the light L 3  incident on the concave portions C 1  and C 2  is refracted and transmitted or reflected and emitted by the convex portions P 1 , P 2  and P 3 , thereby reducing the occurrence of dark portions on the concave portions C 1  and C 2 . That is, as shown in  FIG.  37   , in the lighting module according to the embodiment of the invention, the dark region Rb is smaller than the bright region Ra in the emitted luminous intensity distribution as shown in (a), and may have a distribution of the equiluminance curve of light as shown in (b).  FIG.  38    is a structure having a flat front side surface without a convex portion and a concave portion in a lighting module according to an embodiment of the invention, and may be provided as a module as shown in  FIG.  15   , in a luminous intensity distribution, a dark region Rb becomes greater than a bright region Ra, and has an equiluminance curve distribution as in (b). 
     Referring to  FIG.  6   , an angle RO between the center of the light emitting device  105  and the low point of the concave portion C 0  based on a straight line passing through the center of the light emitting device  105  and the center of the convex portion P 0  may range from 50 degrees or more, for example, in a range from 50 degrees to 80 degrees. The concave portion C 0  is spaced apart from the angle R 0  to receive light from the light emitting device  105  and refract it to emit the light. The convex portion P 0  and the concave portion C 0  may include convex portions P 1 , P 2 , and P 3  and the concave portions C 1 , C 2  disclosed in  FIGS.  1  to  5   . 
       FIG.  7    is an exploded perspective view of a lighting module according to an embodiment of the invention, and  FIGS.  8  to  13    are views illustrating a manufacturing process of the lighting module according to an embodiment of the invention. In describing the lighting module, the same parts as the above configuration will be referred to the above description. 
     Referring to  FIGS.  7  and  8   , two or more light emitting devices  105  may be arranged on the substrate  210  in the first direction. The light emitting devices  105  to be disposed on the substrate  210  may be arranged to emit light toward the front side surface or in a front direction. As another example, the light emitting devices  105  on the substrate  210  are arranged in one column, but may be arranged in two columns, but are not limited thereto. 
     Referring to  FIGS.  7  and  9   , a first reflective layer  230  prepared in advance is attached to the substrate  210 . A hole  232  into which the light emitting device  105  is to be inserted may be formed in the first reflective layer  230 . The first reflective layer  230  is disposed around the light emitting device  105  and is attached to the substrate  210  to reflect light emitted from the light emitting device  105 . The first reflective layer  230  may not be formed when a resist material of a reflective material is disposed on the substrate  210 , but is not limited thereto. The first reflective layer  230  has thinner thickness than the thickness of the light emitting device  105  and may be disposed below the exit surface of the light emitting device  105 . The first reflective layer  230  may be a plastic material, or a metal or non-metal material. 
     Referring to  FIGS.  7  and  10   , a resin layer  220  is formed on the first reflective layer  230 . The resin layer  220  may be molded on the first reflective layer  230  and the light emitting device  105 . The resin layer  220  may be formed to a thickness capable of covering the light emitting device  105 . The resin layer  220  may be formed of a transparent resin material, for example, a material such as silicone, silicone molding compound, epoxy or epoxy molding compound, UV curable resin or heat curable resin. 
     The resin layer  220  may be provided with a thickness that is thicker than the thickness of the light emitting device  105 , and may be arranged to be twice or less, for example, 1.5 times or less, the thickness of the light emitting device  105 . The resin layer  220  may be formed by a dispensing process. 
     Referring to  FIGS.  7  and  11   , a second reflective layer  240  is formed on the upper surface of the resin layer  220  before the resin layer  220  is cured. The second reflective layer  240  may cover the entire upper surface of the resin layer  220 . The second reflective layer  240  may be attached using an adhesive after the resin layer  220  is cured as another example. 
     Referring to  FIGS.  7  and  12   , when the second reflective layer  240  is formed, structures from the substrate  210  to the second reflective layer  240  are cut using cutting equipment, as shown in  FIGS.  1 ,  12  and  13   . Here, the cutting equipment may be cut with a router, and a convex portions P 0  and a concave portions P 0  of the lighting module may be formed during the cutting. 
     Accordingly, in the lighting module, the front side surface S 1  of the resin layer  220  and the front side surface S 1  of the substrate  210  may be disposed on the same vertical plane. In addition, the resin layer  220  may be disposed on the same vertical plane as the front side surface S 1 , the first reflective layer  230 , and the second reflective layer  240 . Each of the rear side surface S 2 , the first side surface S 3 , and the second side surface S 4  of the resin layer  220  may be disposed on the same vertical plane as the rear side surface, the first side surface, and the second side of the substrate  210 , respectively. Each of the rear side surface S 2 , the first side surface S 3 , and the second side surface S 4  of the resin layer  220  may be disposed on a perpendicular plane such as the rear side, the first side surface and the second side surface of the first and second reflective layers  230  and  240 . 
     Accordingly, as shown in  FIGS.  7 ,  12 , and  13   , the light emitted from the light emitting device  105  may be emitted through the front side surface S 1  of the resin layer  220 . Some light reflected from the inside may be emitted to the rear side surface S 2 , the first side surface S 3 , and the second side surface S 4  of the resin layer  220 . 
       FIG.  14    is another example of the lighting module of the invention. As illustrated in  FIG.  14   , the first reflective layer  230  may be spaced apart from the edge of the substrate  210  and a portion  222  of the resin layer  220  may contact an upper surface of the edge side of the substrate  210 . When the resin layer  220  is in contact with the edge of the substrate  210 , moisture penetration may be suppressed. 
     As another example, in the lighting module as shown in  FIGS.  2  and  14   , a third reflective layer  245  may be further disposed on the surfaces S 2 , S 3 , and S 4  excluding the front side surface S 1  among the side surfaces of the resin layer  220 . The third reflective layer  245  may prevent leakage of light and increase the amount of light extracted to the front side surface S 1 . The third reflective layer  245  may be a material of the first and second reflective layers  230  and  240  disclosed above. The third reflective layer  245  may contact or be spaced apart from the side surface of the resin layer  220 . 
     In the following description, it has a stacked structure of the lighting modules as shown in  FIGS.  3  and  7   , and is a configuration in which the above-described configurations are partially changed in consideration of a variable of luminous intensity degradation in the lighting modules. In the following description, the changed parts of each configuration will be mainly described, and the above configuration may be selectively applied. 
       FIG.  15    is a structure in which the lighting module disclosed above provides a flat front side surface S 1  without convex portions and concave portions. The lighting module may be stacked in the structure of  FIG.  7   . The luminous intensity in the horizontal and vertical directions of the lighting module as shown in  FIG.  15    may be lowered, and the dark portion may be larger than the bright portion as shown in  FIG.  38    without convex portions and concave portions. In this case, a diffusion agent may be added in the resin layer to prevent hot spots or provide a longer light guiding distance. 
       FIGS.  16  to  19    are examples of changing the curvature of the convex portion in the lighting module according to the embodiment of the invention. The lighting module  201   a  of  FIG.  16    has a radius of curvature of 5±0.5 mm of the convex portion Pa 1  corresponding to the light emitting device  105 , and in this case, the luminance intensity in the horizontal and vertical directions may be 7.5 cd or less. In this case, the region Pb 2  between the convex portion Pa 1  and the convex portion Pa 1  is provided in a large region with a flat surface, and thus there is a limit in improving the luminance intensity. 
       FIGS.  17  to  19    are structures in which the radius of curvature of the convex portions Pb 1 , Pc 1 , and Pd 1  corresponding to the light emitting device  105  in the lighting module  201   b  of the invention is gradually increased.  FIG.  17    has a radius of curvature of the convex portion Pb 1  in the range of 8 mm to 11 mm,  FIG.  18    has a radius of curvature of the convex portion Pc 1  in the range of 11 mm to 14 mm, and  FIG.  19    has a radius of curvature of the convex portion Pd 1  in the range of 15 mm to It is in the range of 21 mm. At this time, it may be seen that in the structures as shown in  FIGS.  17  and  18   , the luminance intensity in the horizontal and vertical directions is 8.5 cd or more, and in  FIG.  19   , the luminance intensity in the horizontal and vertical directions is reduced to 7.5 cd or more and 8.2 cd again. Therefore, when the lighting module of the invention provides a luminance intensity of 7.5 cd or more, the radius of curvature described above may be selectively applied. When the light module has the best luminance intensity, the radius of curvature of the convex portions Pb 1 , Pc 1 , and Pd 1  may be provided in a range of 8 mm to 14 mm, and the concave portions Pb 2 , Pc 2 , and Pd 2  in the region between the convex portions Pb 1 , Pc 1 , and Pd 1  due to the radius of curvature of the convex portions Pb 1 , Pc 1 , and Pd 1  may be provided without a curve or have a radius of curvature of 0.5 mm to 1 mm. The convex portions Pb 1 , Pc 1 , Pd 1  and concave portions Pb 2 , Pc 2 , and Pd 2  of the lighting module are alternately arranged, since the convex portion P overlaps the light emitting device  105  in the second direction and may be extracted by diffusing the light incident and the concave portions Pb 2 , Pc 2 , and Pd 2  may be extracted by refracting the light incident, the luminous intensity of the line-shaped surface light source may improve and hot spots may prevent. Here, the luminous intensity was measured under the condition that the distance between the light emitting device  105  and the front side surface S 1  is 13 mm, and the air gap between the lighting module and the inner lens is 11 mm. 
       FIGS.  20  to  34    are examples of modifying the shape of the front side surface S 1  in the lighting module of the invention. In this modification, when the convex portion and the concave portion disclosed above have a curvature, the luminous intensity may be lower than the luminous intensity in the horizontal and vertical directions. 
     As shown in  FIG.  20   , a convex portion Pa 3  and a concave portion Pa 4  are alternately disposed on the front side surface S 1  of the lighting module  202   a , and the convex portion Pa 3  is disposed to overlap the light emitting device  105 , and the concave portion Pa 4  disposed between the convex portions Pa 3  may have a predetermined curvature. The convex portion Pa 3  has a convex curved surface and may be provided as a recess having a concave curved surface as it corresponds to the center of the light emitting device  105 . 
     As shown in  FIG.  21   , the convex portion Pb 3  and the concave portion Pb 4  are alternately disposed on the front side surface S 1  of the lighting module  202   b , and the convex portion Pb 3  is disposed to overlap the light emitting device  105 , and the concave portion Pb 4  between the convex portions Pb 3  may have a flat surface. The convex portions Pb 3  has a convex curved surface and may be provided as a recess having a concave curved surface as it corresponds to the center of the light emitting device  105 . The flat surface (or low point) of the concave portion Pb 4  may be disposed in a region between the light emitting devices  105 . 
     As shown in  FIG.  22   , a convex portion Pc 3  and a concave portion Pc 4  are alternately arranged on the front side surface S 1  of the lighting module  202   c , and the convex portion Pc 3  has a maximum width smaller than the length of the light emitting device  105  in the first direction. Accordingly, two or more convex portions Pc 3  overlapping the light emitting device  105  may be arranged. The concave portion Pc 4  is disposed between the convex portions Pc 3 , and the concave portion Pc 4  may be a curved surface having a negative curvature or a structure having an inflection point or an interface. The convex portion Pc 3  may be spaced apart from the light emitting device  105  by 13 mm or more. In this case, since the size of the convex portion Pc 3  is arranged with a micro lens, a uniform distribution of light may be provided, but a decrease in the luminous intensity may occur. 
       FIGS.  23  to  25   , convex portions Pd 3 , Pe 3 , and Pf 3  and concave portions Pd 4 , Pe 4 , and Pf 4  are alternately disposed on the front side surface S 1  of the lighting module  202   d , and the convex portions Pd 3 , Pe 3 , and Pf 3  may protrude in a triangular shape, for example, a right-angled triangular shape, at the lower point of the recesses Pd 4 , Pe 4 , and Pf 4 . The low point of the concave portions Pd 4 , Pe 4 , and Pf 4  may correspond to an edge portion outside of the exit surface of the light emitting device  105 . The convex portions Pd 3 , Pe 3 , and Pf 3  may provide an inclined surface between adjacent light emitting devices  105 , and a portion corresponding to the low point of the concave portions Pd 4 , Pe 4 , and Pf 4  may be provided in a perpendicular surface to the low point.  FIG.  23    shows a flat surface with the inclined surface of the convex portion Pd 3 , the high point portion of the convex portion Pd 3  shows an angled surface, and  FIG.  24    shows a high point portion of the convex portion Ped 3  having a curved surface, and  FIG.  25    may show to arrange as a micro lens on the inclined surface of the convex portion Pf 3 . In  FIGS.  23  to  25   , since light is transmitted along the inclined directions of the convex portions Pd 3 , Pe 3 , and Pf 3 , the distribution of the equiluminance curve around the light emitting device  105  may be formed long along the inclined direction. 
       FIGS.  26  to  28    are other examples of lighting modules. 
     Referring to  FIG.  26   , the lighting module  202   g  has convex portions Pg 3  and concave portions Pg 4  alternately arranged on the front side surface S 1 , and the convex portions Pg 3  overlap the light emitting devices  105  and has a curved surface, and the concave portion Pg 4  has a low point located between the light emitting devices  105 . In such a structure, it is possible to provide a wide distribution of the equiluminance curve. 
     Referring to  FIG.  27   , the lighting module  202   h  has a convex portion Ph 3  and a concave portion Ph 4  alternately arranged on the front side surface S 1 , and the concave portion Ph 4  has a polygonal shape and corresponds to the light emitting device  105 , and the convex portion Ph 3  may protrude in a region between the light emitting devices  105 . In such a structure, it is possible to provide a wide distribution of the equiluminance curve. 
     Referring to  FIG.  28   , the lighting module  202   i  has convex portions Pi 3  and concave portions Pi 4  alternately arranged on the front side surface S 1 , and the convex portions Pi 3  is disposed to correspond to the light emitting devices  105 . The concave portion Pi 3  may correspond to a region between the light emitting devices  105 . The convex portion Pi 3  and the concave portion Pi 4  may have a curved surface and be provided in a sine wave shape. In such a structure, it is possible to provide a wide distribution of the equiluminance curve. 
     Referring to  FIG.  29   , the lighting module  202   j  has convex portions Pj 3  and concave portions Pj 4  alternately arranged on the front side surface S 1 , and the convex portions Pj 3  have convex curved surfaces and may be smaller than the width of a concave curved surface of concave portion Pj 4  or radius of curvature of the concave curved surface of Pj 4 . One or more of the concave portions Pj 4  may be disposed to correspond to the light emitting device  105 , and thus provided in the form of a concave micro-lens, thereby providing a wide distribution of the equiluminance curve. 
     Referring to  FIG.  30   , the lighting module  202   k  is provided with a convex portion Pk 3  and a concave portion Pk 4  alternately arranged on the front side surface S 1 , and the convex portion Pk 3  is provided on a flat surface and correspond to the light emitting device  105 , the concave portion Pk 4  may correspond to a region between the light emitting devices  105  and has a trapezoidal shape. The width of the concave portion Pk 4  may be gradually narrowed as the depth increases. Since the concave portion Pk 4  is provided with an inclined side surface, it is possible to refract the incident light. 
     Referring to  FIG.  31   , the lighting module  202   l  may be provided differently from the structure of  FIG.  20   . The lighting module  202   l  has a structure in which the depth of the concave portion Pl 4  between the convex portions Pl 3  is deeper, and the low point of the concave portion Pl 4  may be disposed deeper than a rear side surfaces of the light emitting devices  105 . In this case, some light traveling toward the rear side surface of the light emitting device  105  may be refracted and extracted to the front side surface S 1 . 
     In  FIGS.  32  to  34   , the lighting modules  202   m ,  202   n , and  202   o  are arranged in convex portions Pm 3 , Pn 3 , Po 3  having a triangular shape and concave portions Pm 4 , Pn 4 , Po 4  having a triangular shape, and  FIG.  32    is located between concave portions Pm 4  between the light emitting devices  105 , the high point portion of the convex portion Pm 3  may be formed in an angled surface to correspond to the center of the light emitting device  105 , and  FIG.  33    shows a curved surface formed such that the high point of a convex portion Pn 4  in  FIG.  32    corresponds to the center of the light emitting device  105 , and  FIG.  34    shows an angled surface or curved surface formed such that the low point of the concave portion Po 4  corresponds to the center of the light emitting device  105 . The high point of the convex portion Po 3  corresponds to the region between the light emitting devices  105  and may be an angled surface or a curved surface. In the structures as shown in  FIGS.  32  and  34   , the distribution of the equiluminance curve may be widened, and in the case of  FIG.  33   , the luminous intensity may be improved. 
       FIGS.  35  and  36    show a case in which the distances D 11  and D 12  between the high point of the light emitting device  105  and the convex portion in the lighting module of the invention are different from those of  FIG.  4   . In this case, the convex portion P 0  and the concave portion C 0  may have the curvature disclosed in  FIG.  4   . 
     The lighting module  203  of  FIG.  35    is a case in which the distance D 11  between the high point of the light emitting device  105  and the convex portion P 0  is 4 to 6 mm, and a distance D 12  between the light emitting device  105  and the high point of the convex portion P 0  in  FIG.  36    ranges of 13 mm to 21 mm, the luminous intensity in the horizontal and vertical directions is high rather than the structure of  FIG.  35   , but the luminous intensity may be low. In the structure of  FIG.  35   , a light spot may be short, so hot spots may be generated. 
     In addition, according to an embodiment of the invention, when the thickness of the resin layer  220  is thick, for example, when the thickness of the resin layer  220  is provided, the light emitting area is increased due to an increase in the thickness of the resin layer  220 , thereby improving light distribution. 
     Lighting module according to an embodiment of the invention may be applied to the lamp as shown in  FIG.  39   . The lamp is an example of a vehicle lamp, such as a head lamp, a car width lamp, a side mirror light, a fog light, a tail lamp, a brake light, a daytime running light, a vehicle interior light, a door scar, a rear combination lamp, or applicable to backup lamps. 
     Referring to  FIG.  39   , the lamp may be coupled to the lighting module  200  disclosed above inside the housing  503  having an inner lens  502 . The thickness of the lighting module  200  is such that it may be inserted into the inner width of the housing  503 . The width Z 3  of the exit portion  515  of the inner lens  502  may be equal to or less than twice the thickness of the lighting module  200 , and thus, it is possible to prevent a decrease in the luminous intensity. 
     The inner lens  502  may be spaced a predetermined distance, for example, 10 mm or more from the front side surface of the lighting module  200 . An outer lens  501  may be disposed on the exit side surface of the inner lens  502 . The lamp having the lighting module  200  is an example, and may be applied in a structure having ductility to other lamps, for example, a curved or curved structure when viewed from the side surface. 
       FIG.  40    is a plan view showing an example of a light emitting device applied to a lighting module according to an embodiment of the invention,  FIG.  41    is an example of a module in which the light emitting device of  FIG.  40    is disposed on a circuit board, and  FIG.  42    is another side surface of  FIG.  41    as viewed from the other side. 
     Referring to  FIG.  40   , the light emitting device  100  includes a body  10  having a cavity  20 , a plurality of lead frames  30  and  40  in the cavity  20 , and one or a plurality of light emitting chips  71  disposed on at least one of the plurality of lead frames  30  and  40 . The light emitting device  100  is an example of the light emitting device disclosed in the above embodiment and may be implemented as a side-view type light emitting package. 
     The light emitting device  100  may have a length in the first direction of three times or more, for example, four times or more than the width of the second direction. The length of the first direction may be 2.5 mm or more, for example, in a range of 2.7 mm to 4.5 mm. The light emitting device  100  may provide a long length in the first direction, thereby reducing the number of light emitting devices  100  in the first direction. The light emitting device  100  may provide a relatively thin thickness, thereby reducing the thickness of the lighting module having the light emitting device  100 . The thickness of the light emitting device  100  may be 2 mm or less. The body  10  is provided with the cavity  20  and the length of the body  10  in the first direction may be three times or more compared to the thickness T 1  of the body  10 , thereby widening the angle of beam spread of light in the first direction. 
     The lead frames  30  and  40  are disposed on the bottom of the cavity  20  of the body  10 . For example, a first lead frame  30  and a second lead frame  40  are coupled to the body  10 . 
     The body  10  may be formed of an insulating material. The body  10  may be formed of a reflective material. The body  10  may be formed of a material having a reflectance higher than a transmittance with respect to a wavelength emitted from the light emitting chip  71 , for example, a material having a reflectance of 70% or more. In the case in which the reflectance is 70% or more, the body  10  may be defined as a non-transparent material or a reflective material. The body  10  may be formed of a resin-based insulating material, for example, a resin material such as Polyphthalamide (PPA). The body  10  may be formed of a thermosetting resin including a silicone-based, epoxy-based, or plastic material, or a material having high heat resistance and high light resistance. The body  10  includes a white-based resin. In the body  10 , an acid anhydride, an antioxidant, a release agent, a light reflector, inorganic filler, a curing catalyst, a light stabilizer, a lubricant, and titanium dioxide may be selectively added. The body  10  may be formed of at least one selected from the group consisting of an epoxy resin, a modified epoxy resin, a silicone resin, a modified silicone resin, an acrylic resin, and a urethane resin. For example, an epoxy resin composed of triglycidyl isocyanurate, hydrogenated bisphenol A diglycidyl ether, etc. and an acid anhydride composed of hexahydrophthalic anhydride, 3-methylhexahydrophthalic anhydride, 4-methylhexahydrophthalic anhydride, etc. are added with 1,8-diazabicyclo (5,4,0) undecene-7 (DBU) as a curing agent, ethylene glycol as a co-catalyst, titanium oxide pigment, and glass fiber in the epoxy resin, and thus, a solid epoxy resin composition which is partially cured by heating and B stated may be used but the present invention is not limited thereto. The body  10  may be formed by suitably mixing at least one selected from the group consisting of a dispersant, a pigment, a fluorescent material, a reflective material, a light shielding material, a light stabilizer, and a lubricant in a thermosetting resin. 
     The body  10  may include a reflective material, such as a resin material in which a metal oxide is added, and the metal oxide may include at least one of TiO2, SiO2, and Al2O3. Such a body  10  may effectively reflect incident light. As another example, the body  10  may be formed of a resin material having a translucent resin material or a phosphor material converting a wavelength of incident light. 
     The front portion  15  of the body  10  may be a surface on which the cavity  20  is disposed, or may be a surface on which light is emitted. The rear portion of the body  10  may be an opposite side of the front portion  15 . 
     The first lead frame  30  includes a first lead portion  31  disposed at the bottom of the cavity  20 , a first bonding portion  32  disposed on a first outer regions  11 A and  11 C of the first side portion  11  of the body  10 , and a first heat radiating portion  33  disposed on the third side portion  13  of the body  10 . The first bonding portion  32  is bent from the first lead portion  31  disposed in the body  10  and protrudes to the first side portion  11 , and the first heat radiating portion  33  may be bent from the first bonding portion  32 . The first outer regions  11 A and  11 C of the first side portion  11  may be a region adjacent to the third side portion  13  of the body  10 . 
     The second lead frame  40  includes a second lead portion  41  disposed on the bottom of the cavity  20 , a second bonding portion  42  disposed on second outer regions  11 B and  11 D of the first side portion  11  of the body  10 , and a second heat radiating portion  43  disposed on the fourth side portion  14  of the body  10 . The second bonding portion  42  is bent from the second lead portion  41  disposed in the body  10  and the second heat radiating portion  43  may be bent from the second bonding portion  42 . The second outer regions  11 B and  11 D of the first side portion  11  may be a region adjacent to the fourth side portion  14  of the body  10 . 
     A gap portion  17  between the first and second lead portions  31  and  41  may be formed of a material of the body  10  and may be the same horizontal surface with the bottom of the cavity  20  or may protrude, but the invention is not limited thereto. The first outer regions  11 A and  11 C and the second outer regions  11 B and  11 D has an inclined regions  11 A and  11 B and a flat regions  11 C and  11 D. The first and second bonding portions  32  and  42  of the first and second lead frames  30  and  40  may protrude through the inclined regions  11 A and  11 B, but the invention is not limited thereto. 
     Here, the light emitting chip  71  may be disposed on, for example, the first lead portion  31  of the first lead frame  30 . The light emitting chip  71  may be connected to the first and second lead parts  31  and  41  by wires  72  and  73 , or the light emitting chip  71  may be adhesively connected to the first lead part  31  and connected to the second lead part  41  by wire. The light emitting chip  71  may be a horizontal chip, a vertical chip, or a chip having a via-structure. The light emitting chip  71  may be mounted in a flip chip manner. The light emitting chip  71  may selectively emit light within a wavelength range of an ultraviolet ray to a visible ray. The light emitting chip  71  may emit ultraviolet light or a blue peak wavelength, for example. The light emitting chip  71  may include at least one of Group II-VI compounds and Group III-V compounds. The light emitting chip  71  may be formed of a compound selected from the group consisting of GaN, AlGaN, InGaN, AlInGaN, GaP, AlN, GaAs, AlGaAs, InP and mixtures thereof. The light emitting chip  71  may be disposed in the cavity  20  in one or more. The plurality of light emitting chips  71  may be disposed on at least one of the first lead frame  30  and the second lead frame  40 . 
     In an inner side of the cavity  20 , first, second, third and fourth inner sides  21 ,  22 ,  23  and  24  disposed around the cavity  20  may be inclined with respect to a horizontal straight line of an upper surface of the lead frames  30  and  40 . A first inner side  21  adjacent to the first side portion  11  and a second inner side  22  adjacent to the second side portion  12  is inclined at an angle to the bottom of the cavity  20 , and a third inner side  23  adjacent to the third side portion  13  and a fourth inner side  24  adjacent to the fourth side portion  14  may be inclined at an angle smaller than the inclination angle of the first and second inner sides  21  and  22 . Accordingly, the first and second inner sides  21  and  22  reflect the progress of the incident light toward the first axis direction Y, and the third and fourth inner sides  23  and  24  may diffuse the incident light in the second axis direction X. 
     The inner side surfaces  21 ,  22 ,  23  and  24  of the cavity  20  may have a stepped region vertically stepped from the front side portion  15  of the body  10 . The stepped region may be disposed to be stepped between the front side portion  15  of the body  10  and the inner sides  21 ,  22 ,  23  and  24 . The stepped region may control the directivity characteristic of the light emitted through the cavity  20 . 
     The light emitting chip  71  disposed in the cavity  20  of the light emitting device  100  according to the embodiment may be arranged in one or a plurality. The light emitting chip  71  may be selected from, for example, a red LED chip, a blue LED chip, a green LED chip, and a yellow green LED chip. 
     A molding member  81  is disposed in the cavity  20  of the body  11  as shown in  FIG.  42   , and the molding member  81  includes a light-transmitting resin such as silicone or epoxy, and may be formed in a single layer or multiple layers. A phosphor for changing a wavelength of light emitted on the molding member  81  or the light emitting chip  71  may be included, and the phosphor excites and emits a portion of the light emitted from the light emitting chip  71  to obtain a different wavelength. The phosphor may be selectively formed from quantum dots, YAG, TAG, Silicate, Nitride, and Oxy-nitride-based materials. The phosphor may include at least one of a red phosphor, a yellow phosphor, and a green phosphor, but is not limited thereto. The surface of the molding member  81  may be formed in a flat shape, a concave shape, a convex shape, etc., but is not limited thereto. As another example, a light-transmitting film having a phosphor may be disposed on the cavity  20 , but is not limited thereto. 
     A lens may be further formed on the upper portion of the body  10 , and the lens may include a concave or convex lens structure, and may control light distribution of light emitted by the light emitting device  100 . 
     A semiconductor device such as a light receiving device or a protection device may be mounted on the body  10  or any one of the lead frames, and the protection device may be implemented as a thyristor, a Zener diode, or a TVS (Transient Voltage Suppression), and the Zener diode protects the light emitting chip  71  from electrostatic discharge (ESD). 
     Referring to  FIGS.  41  and  42   , at least one or a plurality of light emitting devices  100  are disposed on a substrate  210 , and a first reflective layer  230  is disposed around a lower portion of the light emitting devices  100 . The light emitting device  100  may be applied to the lighting module disclosed above as an example of the light emitting device disclosed in the embodiment. 
     The first and second lead portions  33  and  43  of the light emitting device  100  are bonded to the electrode patterns  213  and  215  of the substrate  210  with solder or conductive tape, which are conductive adhesive members  217  and  219 . 
     The characteristics, structures and effects described in the above-described embodiments are included in at least one embodiment but are not limited to one embodiment. Furthermore, the characteristic, structure, and effect illustrated in each embodiment may be combined or modified for other embodiments by a person skilled in the art. Thus, it would be construed that contents related to such a combination and such a modified example are included in the scope of the invention. 
     In addition, embodiments are mostly described above. However, they are only examples and do not limit the invention. A person skilled in the art may appreciate that several variations and applications not presented above may be made without departing from the essential characteristics of the embodiments. For example, each component particularly represented in the embodiments may be varied. In addition, it should be construed that differences related to such a variation and such an application are included in the scope of the invention defined in the following claims. 
     An embodiment of the invention provides a lighting module that irradiates light emitted from a plurality of light emitting devices with a light source having a line shape or a surface light source. 
     An embodiment of the invention provides a lighting module in which a resin layer having a light emitting device is disposed between plurality of reflective layers. 
     An embodiment of the invention provides a lighting module for irradiating a side light source having a line shape or a surface light source and a lighting apparatus having the same. 
     An embodiment of the invention may provide a light unit having a lighting module, a liquid crystal display device, and a vehicle lamp. 
     A lighting module according to an embodiment of the invention comprises: a substrate; a light emitting device disposed on the substrate; a first reflective layer disposed on the substrate; a resin layer disposed on the first reflective layer; and a second reflective layer disposed on the resin layer, wherein the resin layer includes a front side surface through which light generated from the light emitting device is emitted, and the front side surface of the resin layer may include a plurality of convex portions and a plurality of concave portions. 
     According to an embodiment of the invention, a plurality of light emitting devices are disposed on the substrate, the resin layer is disposed to surround the light emitting device, and the resin layer include a rear side surface facing the front side surface, and a first side surface and a second side surface opposite to each other and connecting the front side surface and the rear side surface, wherein a distance between the first reflective layer and the second reflective layer is less than a distance between the front side surface and the rear side surface of the resin layer, the convex portion of the front side surface may be protruded convexly toward the front side surface from the light emitting device, and the concave portion of the front side surface may be recessed in a direction of the rear side surface between the plurality of convex portions. 
     According to an embodiment of the invention, the first reflective layer may have a hole which the plurality of light emitting devices are penetrated. 
     According to an embodiment of the invention, the distance between the first and second side surfaces of the resin layer may be greater than the distance between the high point of the convex portion and the rear side surface. 
     According to an embodiment of the invention, the front side surface, the rear side surface, the first side surface, and the second side surface of the resin layer are surfaces between the first and second reflective layers, and the resin layer emits light having a constant height through the front side surface. 
     According to an embodiment of the invention, the convex portion may include a lens portion having a curved surface convex in a direction of the front side surface of the resin layer. 
     According to an embodiment of the invention, the lens portion have a maximum distance from the light emitting device as the region facing the center of the light emitting device. 
     According to an embodiment of the invention, the thickness of the lens portion may be an interval between the first and second reflective layers or the thickness of the resin layer. 
     According to an embodiment of the invention, the thickness of the resin layer may be 2 times or less of the thickness of the light emitting device. 
     According to an embodiment of the invention, each of the plurality of convex portions faces to each of the plurality of light emitting devices, the concave portion faces to a region between the plurality of light emitting devices, and an exit surface of the light emitting device may be disposed to face the convex portion. 
     According to an embodiment of the invention, the plurality of convex portions include first and second convex portions, and the plurality of light emitting devices include first and second light emitting devices arranged in a first direction, and in a second direction toward the front side surface from the rear side surface of the resin layer, the first convex portion may overlap the first light emitting device and the second convex portion may overlap the second light emitting device. 
     According to an embodiment of the invention, the concave portion has a concave curved surface in a direction of the rear side surface between the first and second convex portions and may correspond to a region between the first and second light emitting devices. 
     According to an embodiment of the invention, light emitted from the plurality of light emitting devices is totally reflected by the first and second reflective layers, and may be emitted through the front side surface. 
     According to an embodiment of the invention, the first and second reflective layers may have a shape corresponding to a shape of the convex portion and the concave portion disposed on the front side surface of the resin layer. 
     According to an embodiment of the invention, the substrate may have a shape corresponding to the shape of the convex portion and the concave portion disposed on the front side surface of the resin layer. 
     According to an embodiment of the invention, comprising a third reflective layer disposed on the rear side surface, the first side surface and the second side surface of the resin layer may include. 
     According to an embodiment of the invention, the number of convex portions of the resin layer may be the same as the number of the light emitting devices. 
     According to an embodiment of the invention, the first reflective layer may contact the lower surface of the resin layer, and the second reflective layer may contact the upper surface of the resin layer. 
     A lighting module according to an embodiment of the invention comprises: a substrate; a plurality of light emitting devices disposed on the substrate; a first reflective layer disposed on the substrate; a resin layer disposed on the first reflective layer; and a second reflective layer disposed on the resin layer, wherein the resin layer includes a front side surface through which light generated from the plurality of light emitting devices is emitted, and the front side surface of the resin layer includes a plurality of convex portions and a plurality of concave portions. The plurality of convex portions and the plurality of concave portions have the same height, and the plurality of light emitting devices include a first light emitting device, a second light emitting device and a third light emitting device disposed between the first light emitting device and the second light emitting device, and the plurality of convex portions may include a first convex portion facing the first light emitting device, a second convex portion facing the second light emitting device, and a third a third convex portion facing the third light emitting device. 
     According to an embodiment of the invention, the luminous intensity of the light source may improve. 
     According to an embodiment of the invention, a surface light source having a line shape may provide. 
     According to an embodiment of the invention, it is possible to reduce the process of the lighting module. 
     According to an embodiment of the invention, light efficiency may be improved by reducing light loss. 
     According to an exemplary embodiment of the invention, since a light module of a thin thickness is provided in the form of a line light source, design freedom may be increased. 
     According to an embodiment of the invention, it is possible to improve the light uniformity of the surface light source. 
     It is possible to improve the optical reliability of the lighting module and the lighting device having the same according to an embodiment of the invention. 
     It is possible to improve the reliability of the lighting device for a vehicle having a lighting module according to an embodiment of the invention. 
     Embodiments of the invention may be applied to a light unit having a lighting module, various types of display devices, surface light source lighting devices, vehicle lamps. 
     Any reference in this specification to “one embodiment,” “an embodiment,” “example embodiment,” etc., means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with any embodiment, it is submitted that it is within the purview of one skilled in the art to effect such feature, structure, or characteristic in connection with other ones of the embodiments. 
     Although embodiments have been described with reference to a number of illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More particularly, various variations and modifications are possible in the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure, the drawings and the appended claims. In addition to variations and modifications in the component parts and/or arrangements, alternative uses will also be apparent to those skilled in the art.