KR20210155453A - Lighing apparatus and lamp including the same - Google Patents

Abstract

According to an embodiment, provided is a lighting device, which includes a light source module and a light guide member disposed on the light source module. The light source module includes a substrate, a light emitting element disposed on the substrate, a first reflective member disposed on the substrate, and a resin layer disposed on the first reflective member. The resin layer includes at least one insertion groove into which a part of the light guide member is inserted. The height of the light guide member disposed in the insertion groove may be less than or equal to 60% of the total height of the resin layer.

Description

A lighting device and a lamp comprising the same

The embodiment relates to a lighting device and a lamp including the same.

Lighting is a device that can supply light or control the amount of light and is used in various fields. For example, the lighting device may be applied to various fields such as vehicles and buildings to illuminate the interior or exterior.

In particular, in recent years, a light emitting device has been used as a light source for lighting. Such a light emitting device, for example, a light emitting diode (LED), has advantages such as low power consumption and semi-permanent lifespan compared to conventional light sources such as fluorescent lamps and incandescent lamps, fast response speed, safety, and environmental friendliness. These light emitting diodes are being applied to various optical assemblies such as various display devices, indoor lights, or outdoor lights.

In general, lamps of various colors and shapes are applied to vehicles, and recently, lamps employing light emitting diodes as light sources for vehicles have been proposed. For example, light emitting diodes are being applied to vehicle headlights, tail lights, turn signals, emblems, and the like. However, such a light emitting diode has a problem in that the emission angle of the emitted light is relatively small. For this reason, when the light emitting diode is used as a vehicle lamp, there is a demand for increasing the light emitting area of the lamp.

In addition, when the lamp includes the light emitting diode, there is a problem in that a hot spot is formed by the light emitted from the light emitting diode. In this case, when the surface light source is implemented using the lamp, there is a problem in that the uniformity characteristic of the light emitting surface is deteriorated.

In addition, in general, when the light emitting diode is applied to a vehicle lamp, there is a problem that the light emitting diode is visually recognized from the outside. For example, when the vehicle lamp is on, it may not be visually recognized by the light emitted from the light source, but when the lamp is off, the light emitting diode is visible from the outside, so that the esthetic and design freedom of the lamp There is a problem in that the characteristics are deteriorated.

In addition, in order for the lamp to emit light through line illumination or surface illumination, a plurality of light emitting diodes must be disposed in an area corresponding to the line or surface. Accordingly, there is a problem in that reliability is deteriorated due to heat emitted from the plurality of light emitting diodes when the lamp is operating. In addition, as the lamp includes a plurality of light emitting diodes, there is a problem in that the manufacturing cost increases.

Accordingly, there is a need for a new lighting device and lamp capable of solving the above problems.

Embodiments are intended to provide a lighting device and a lamp having improved luminous intensity.

In addition, the embodiment intends to provide a lighting device and lamp capable of implementing a uniform line light source and a surface light source.

In addition, the embodiment intends to provide a lighting device and a lamp capable of providing light in various forms.

In addition, the embodiment intends to provide a lighting device and a lamp capable of improving design freedom and aesthetics.

A lighting device according to an embodiment includes a light source module and a light guide member disposed on the light source module, wherein the light source module includes a substrate, a light emitting device disposed on the substrate, a first reflective member disposed on the substrate, and a resin layer disposed on the first reflective member, wherein the resin layer includes at least one insertion groove into which a portion of the light guide member is inserted, and the height of the light guide member disposed in the insertion groove is the It may be less than or equal to 60% of the total height of the resin layer.

In addition, the insertion groove is formed on the upper surface of the resin layer and has a concave shape from the upper surface of the resin layer to the lower surface of the resin layer, and the horizontal width of the light guide member disposed in the insertion groove is the upper surface of the resin layer. may be 50% of the horizontal width of

In addition, the light source module includes first and second light source modules spaced apart from each other, the upper surfaces of the first and second light source modules are disposed to face each other, and one end of the light guide member is the first It may be connected to the light source module, and the other end of the light guide member may be connected to the second light source module.

In addition, the light guide member may include a plurality of optical patterns having a protruding shape on the inner surface of the light guide member, and the density of the optical patterns may increase as the distance from each of the first and second light source modules increases. have.

In addition, the light source module includes first and second light source modules spaced apart from each other, each side of the first and second light source modules is disposed to face each other, and the light guide member has one end of the first light source A first light guide unit connected to the module, a second light guide unit having one end connected to the second light source module, and a third light guide unit connecting the other end of the first light guide unit and the other end of the second light guide unit may include

In addition, the first and second light guide units extend in a first direction, the third light guide unit extends in a second direction different from the first direction, and the first and second light guide units extend in the first direction. The length may be shorter than a length of the third light guide part in the second direction.

In addition, each of the first to third light guides includes a plurality of optical patterns having a protruding shape on the inner surface, and the density of the optical patterns respectively formed in the first and second light guides is the second The higher the distance from the first and second light source modules, the higher the density of the optical pattern formed in the third light guide unit may be higher as the distance from the first and second light guide unit.

In addition, an adhesive member disposed between the resin layer and the light guide member may be included, and the adhesive member may include a light-transmitting material.

The resin layer may further include a second reflective member disposed on an outer surface of the resin layer, and the second reflective member may be disposed on at least one of a side surface and an upper surface of the resin layer.

The lighting device and the lamp according to the embodiment may have improved light characteristics. In detail, the lighting device and the lamp may minimize loss of light emitted from the light source module including the light emitting device, the first reflective member, and the resin layer in the process of being emitted to the outside of the light source module. Accordingly, the lighting device according to the embodiment may implement a uniform line light source and a surface light source.

In addition, the lighting device and the lamp according to the embodiment may emit light in various shapes and various lengths. In detail, the lighting device may include a light guide member connected to the light source module, and the light guide member may be connected to the light source module at a set height and set width. Accordingly, the light emitted from the light source module may be effectively transmitted to the light guide member, and the light guide member may uniformly emit light to an emitting surface having various shapes and lengths. Accordingly, the lighting device and the lamp may have improved esthetics and improved design freedom.

1 is a cross-sectional view of a lighting device according to an embodiment.
2 is a top view of a reflective member according to an embodiment.
3 is a view for explaining an optical pattern of the light guide member according to the embodiment.
4 and 5 are diagrams for explaining an arrangement relationship between a plurality of light source modules and a light guide member.
6 is a view for explaining a connection region of the light guide member according to the embodiment.
7 is a cross-sectional view in which a second reflective member is added in the lighting device according to the embodiment.
8 is another cross-sectional view of a lighting device according to an embodiment.
9 is a view for explaining an arrangement relationship between a plurality of light source modules and a light guide member.
10 is another cross-sectional view of a lighting device according to an embodiment.
11 to 13 are views illustrating examples in which a lamp including a lighting device according to an embodiment is applied to a vehicle.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The technical spirit of the present invention is not limited to some of the described embodiments, but may be implemented in various different forms, and within the scope of the technical spirit of the present invention, one or more of the components between the embodiments are selectively combined , can be used as a substitute. In addition, terms (including technical and scientific terms) used in the embodiments of the present invention may be generally understood by those of ordinary skill in the art to which the present invention pertains, unless specifically defined and described. It may be interpreted as a meaning, and generally used terms such as terms defined in advance may be interpreted in consideration of the contextual meaning of the related art. In addition, the terminology used in the embodiments of the present invention is for describing the embodiments and is not intended to limit the present invention. In this specification, the singular form may also include the plural form unless otherwise specified in the phrase, and when it is described as "at least one (or one or more) of A and (and) B, C", it is combined with A, B, C It can contain one or more of all possible combinations. In addition, in describing the components of the embodiment of the present invention, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only used to distinguish the component from other components, and the essence, order, or order of the component is not determined by the term. And, when it is described that a component is 'connected', 'coupled' or 'connected' to another component, the component is not only directly connected, coupled or connected to the other component, but also with the component It may also include a case of 'connected', 'coupled' or 'connected' due to another element between the other elements. In addition, when it is described as being formed or disposed on "above (above) or below (below)" of each component, the top (above) or bottom (below) is one as well as when two components are in direct contact with each other. Also includes a case in which another component as described above is formed or disposed between two components. In addition, when expressed as "upper (upper) or lower (lower)", a meaning of not only an upper direction but also a lower direction based on one component may be included.

The lighting device according to the present invention can be applied to various lamp devices that require lighting, such as a vehicle lamp, a home optical assembly, and an industrial optical assembly. For example, when applied to a vehicle lamp, a head lamp, a side mirror lamp, a side maker light, a fog lamp, a tail lamp, a brake lamp, a daytime running lamp, a vehicle interior lighting, a door scar, the rear It is applicable to combination lamps, backup lamps, logo lamps, emblem lamps, and the like. In addition, when applied to a vehicle lamp, it is applicable to a rear side assist system (BSD) disposed on a side mirror or an a-pillar. In addition, the optical assembly of the present invention can be applied to indoor and outdoor advertising devices, display devices, and various electric vehicle fields. would be applicable.

In addition, before the description of the embodiment of the present invention, the first direction may mean the x-axis direction shown in the drawings, the second direction may be a different direction from the first direction. For example, the second direction may mean a y-axis direction shown in the drawing in a direction perpendicular to the first direction. Also, the horizontal direction may mean first and second directions, and the vertical direction may mean a direction perpendicular to at least one of the first and second directions. For example, the horizontal direction may mean the x-axis and y-axis directions of the drawing, and the vertical direction may be a z-axis direction of the drawing and a direction perpendicular to the x-axis and y-axis directions.

1 is a cross-sectional view of a lighting device according to an embodiment, and FIG. 2 is a top view of a reflective member according to the embodiment. 3 is a view for explaining an optical pattern of the optical guide member according to the embodiment.

1 to 3 , the lighting apparatus 10 according to the embodiment may include a light source module 1000 and a light guide member 600 .

The light source module 1000 may include a substrate 100 , a light emitting device 200 , a first reflective member 300 , and a resin layer 400 .

The light source module 1000 may emit the light emitted from the light emitting device 200 as a surface light source. The light source module 1000 may include one light emitting cell or a plurality of light emitting cells on the substrate 100 .

The substrate 100 may include a printed circuit board (PCB). The substrate 100 may include, for example, at least one of a resin-based printed circuit board (PCB), a metal core PCB, a flexible PCB, a ceramic PCB, and an FR-4 substrate. . When the substrate 100 is disposed as a metal core PCB having a metal layer disposed on the bottom, the heat dissipation efficiency of the light emitting device 200 may be improved. In addition, the substrate 100 may include a light-transmitting material. In detail, the substrate 100 may include a material through which light is transmitted through the upper and lower surfaces. The substrate 100 may include at least one of polyethylene terephthalate (PET), polystyrene (PS), polyimide (PI), polyethylene naphthalate (PEN), and poly carbonate (PC).

The substrate 100 may be electrically connected to the light emitting device 200 . The substrate 100 may include a wiring layer (not shown) thereon, and the wiring layer may be electrically connected to the light emitting device 200 . When a plurality of the light emitting devices 200 are arranged on the substrate 100 , the plurality of light emitting devices 200 may be connected in series, parallel, or series-parallel by the wiring layer. The substrate 100 may function as a base member or a support member disposed under the light emitting device 200 and the resin layer 400 .

The light emitting device 200 may be disposed on the substrate 100 . The light emitting device 200 is a device including a light emitting diode (LED), and may include a package in which a light emitting chip is packaged. The light emitting chip may emit at least one of visible light such as blue, red, green, and yellow, ultraviolet (UV), and infrared light, and the light emitting device 200 may emit visible light such as white, blue, red, yellow, and green. At least one of light rays, ultraviolet rays, and infrared rays may be emitted. The light emitting device 200 may be of a top view type in which a light emitting surface faces an upper portion, for example, an upper surface of the resin layer 400 . That is, the optical axis of the light emitting device 200 may be perpendicular to the upper surface of the substrate 100 .

In addition, the light emitting device 200 is an LED chip emitting light on at least five sides and may be disposed on the substrate 100 in the form of a flip chip. Alternatively, the light emitting device 200 may be a horizontal chip or a vertical chip. In the horizontal chip, two different electrodes may be disposed in a horizontal direction, and in the vertical chip, two different electrodes may be disposed in a vertical direction. Since the light emitting device 200 is connected to another chip or wiring pattern with a wire in the case of the horizontal chip or the vertical chip, the thickness of the module can be increased due to the height of the wire, and the pad space for bonding the wire is reduced. may be needed

The light emitting device 200 may be electrically connected to the substrate 100 . For example, the light emitting device 200 may be electrically connected to a pad (not shown) of the substrate 100 by a conductive bonding member (not shown) with the substrate 100 . The conductive bonding member may be a solder material or a metal material.

The thickness of the light emitting device 200 may be about 3 mm or less. In detail, the thickness of the light emitting device 200 may be about 0.1 mm to about 2.5 mm. Also, the length in the first direction of the light emitting device 200 may be different from or equal to the length in the second direction.

At least one light emitting device 200 may be disposed on the substrate 100 . For example, one or a plurality of the light emitting devices 200 may be disposed in a region that vertically overlaps with a resin layer 400 to be described later. When there are a plurality of the light emitting devices 200 , the light emitting devices 200 may be spaced apart from each other in the first direction or the second direction. In addition, the plurality of light emitting devices 200 may emit light of the same wavelength band.

The light emitting device 200 may include an emitting surface (not shown) from which light is emitted. The emission surface is a surface on which the strongest light is emitted, and the emission surface may be disposed on the upper surface of the light emitting device 200 . Here, the upper surface of the light emitting device 200 may be a surface facing the upper surface of the resin layer 400 . That is, the light emitting device 200 may emit light of the highest intensity in a third direction (vertical direction, z-axis direction). The exit surface may be a vertical plane, or may include a concave surface or a convex surface. In addition, the light emitting device 200 may have a set directivity angle. For example, the light emitting device 200 may have an orientation angle of about 100 degrees or more. In detail, the directional angle of the light emitting device 200 may be about 120 degrees to about 140 degrees.

The light emitted from the light emitting device 200 may travel toward the upper surface of the resin layer 400 . In addition, a portion of the emitted light may be reflected by the first reflective member 300 and proceed toward the upper surface of the resin layer 400 . In addition, another portion of the emitted light may be emitted to the outside of the resin layer 400 through the side surface of the resin layer 400 .

The first reflective member 300 may be disposed on the substrate 100 . In detail, the first reflective member 300 may be disposed between the substrate 100 and the resin layer 400 .

The first reflective member 300 may be provided in the form of a film having a metal material or a non-metal material. The first reflective member 300 may be adhered to the upper surface of the substrate 100 . The first reflective member 300 may have an area smaller than an area of the top surface of the substrate 100 . The first reflective member 300 may be spaced apart from the edge of the substrate 100 , and the resin layer 400 may be attached to the substrate 100 in the spaced area. Accordingly, it is possible to prevent the edge portion of the first reflective member 300 from peeling off.

The first reflective member 300 may include an opening 301 in which a lower portion of the light emitting device 200 is disposed. In the opening 301 of the first reflective member 300 , an upper surface of the substrate 100 is exposed and a portion to which a lower portion of the light emitting device 200 is bonded may be disposed. The size of the opening 301 may be the same as or larger than the size of the light emitting device 200, but is not limited thereto. The first reflective member 300 may be in contact with the upper surface of the substrate 100 or may be adhered between the resin layer 400 and the substrate 100 , but is not limited thereto. Here, the first reflective member 300 may be omitted when a highly reflective material is coated on the upper surface of the substrate 100 .

The first reflective member 300 may be formed to have a thickness smaller than that of the light emitting device 200 . The thickness of the first reflective member 300 may include a range of 0.2 mm±0.02 mm. A lower portion of the light emitting device 200 may penetrate through the opening 301 of the first reflective member 300 , and an upper portion of the light emitting device 200 may protrude. The emission surface of the light emitting device 200 may be provided in a direction perpendicular to the top surface of the first reflective member 300 .

The first reflective member 300 may include a metallic material or a non-metallic material. The metallic material may include a metal such as aluminum, silver, or gold. The non-metallic material may include a plastic material or a resin material. The plastic material is polyethylene, polypropylene, polystyrene, polyvinyl chloride, polybiphenyl chloride, polyethylene terephthalate, polyvinyl alcohol, polycarbonate, polybutylene terephthalate, polyethylene naphthalate, polyamide, polyacetal, polyphenylene. It may be any one selected from the group consisting of ether, polyamideimide, polyetherimide, polyetheretherketone, polyimide, polytetrafluoroethylene, liquid crystal polymer, fluororesin, copolymers thereof, and mixtures thereof. As the resin material, a reflective material, for example, TiO ₂ , Al ₂ O ₃ , or SiO ₂ may be added in silicon or epoxy. The first reflective member 300 may be implemented as a single layer or multiple layers, and light reflection efficiency may be improved by such a layered structure. The first reflective member 300 according to the embodiment reflects the incident light, thereby increasing the amount of light so that the light is emitted with a uniform distribution.

The first reflective member 300 may include an adhesive layer (not shown), a reflective layer (not shown), and a plurality of dots 305 .

The adhesive layer may attach the first reflective member 300 to the upper surface of the substrate 100 . The adhesive layer is a transparent material, and may be an adhesive such as UV adhesive, silicone, or epoxy.

The reflective layer may include a plurality of reflective agents (not shown) inside the resin material. The reflector may be a bubble, such as air, or a medium having the same refractive index as that of air. A resin material of the reflective layer may be a material such as silicone or epoxy, and the reflective agent may be formed by injecting air bubbles into the resin material. The reflective layer may reflect the light incident by the plurality of reflectors or refract it in a different direction. The thickness of the reflective layer may be 80% or more of the thickness of the first reflective member 300 .

The plurality of dots 305 may be disposed to protrude on the upper surface of the first reflective member 300 . For example, the plurality of dots 305 may be disposed on the upper surface of the reflective layer to protrude from the upper surface. The plurality of dots 305 may be spaced apart from the light emitting device 200 and may be disposed to surround the circumference of the light emitting device 200 .

The plurality of dots 305 may be formed on the reflective layer by printing. The plurality of dots 305 may include reflective ink. The plurality of dots 305 may be printed with a material including any one _{of TiO 2} , CaCO ₃ , BaSO ₄ , Al ₂ O _{3 , Silicon, and PS.} A planar shape of each of the plurality of dots 305 may be one selected from a circle, an ellipse, and a polygon. In addition, each of the plurality of dots 305 may have a hemispherical shape or a polygonal shape in a side cross-section. The material of the plurality of dots 305 may be white.

The dot pattern density of the plurality of dots 305 may increase as the distance from the light emitting device 200 increases. For example, the dot pattern density per unit area may increase as the distance from the optical axis of the light emitting device 200 increases in the horizontal direction. In addition, the sizes of the plurality of dots 305 may change as they move away from the light emitting device 200 . For example, the horizontal width of the plurality of dots 305 may increase as the distance from the optical axis of the light emitting device 200 in the horizontal direction increases.

That is, the plurality of dots 305 are disposed on a movement path of light emitted from the light emitting device 200 and/or light emitted from the light emitting device 200 and reflected in other components to improve light reflectance and It is possible to reduce light loss and improve the luminance of the surface light source.

The resin layer 400 may be disposed on the substrate 100 . The resin layer 400 may face the substrate 100 . The resin layer 400 may be disposed on the entire or partial area of the upper surface of the substrate 100 . The area of the lower surface of the resin layer 400 may be the same as or smaller than the area of the upper surface of the substrate 100 .

The resin layer 400 may be formed of a transparent material. The resin layer 400 may include a resin material such as silicone or epoxy. The resin layer 400 may include a thermosetting resin material, for example, may selectively include PC, OPS, PMMA, PVC, and the like. The resin layer 400 may be formed of glass, but is not limited thereto. For example, the main material of the resin layer 400 may be a resin material having a urethane acrylate oligomer as a main material. For example, a mixture of urethane acrylate oligomer, which is a synthetic oligomer, and a polymer type, which is polyacrylic, may be used. Of course, the low-boiling dilution type reactive monomer IBOA (isobornyl acrylate), HPA (hydroxylpropyl acrylate, 2-HEA (2-hydroxyethyl acrylate), etc. may further include a mixed monomer, etc., as an additive, a photoinitiator (for example, 1 -hydroxycyclohexyl phenyl-ketone, etc.) or antioxidants may be mixed.

The resin layer 400 may have a set refractive index. For example, the refractive index of the resin layer 400 may be about 1.4 to about 1.8. Since the resin layer 400 is provided as a layer for guiding light as a resin, it may be provided with a thinner thickness than in the case of glass and may be provided as a flexible plate. The resin layer 400 may emit the point light source emitted from the light emitting device 200 in the form of a line light source or a surface light source.

The upper surface of the resin layer 400 may emit light by diffusing the light emitted from the light emitting device 200 . For example, beads (not shown) may be included in the resin layer 400 , and the beads may diffuse and reflect incident light to increase the amount of light. The beads may be arranged in an amount of 0.01 to 0.3% based on the weight of the resin layer 400 . The bead is made of any one selected from silicon, silica, glass bubble, polymethyl methacrylate (PMMA), urethane, Zn, Zr, Al ₂ O ₃ , and acryl. may be, and the particle diameter of the beads may be in the range of about 1 μm to about 20 μm, but is not limited thereto.

Since the resin layer 400 is disposed on the light emitting device 200 , it is possible to protect the light emitting device 200 and reduce loss of light emitted from the light emitting device 200 . The light emitting device 200 may be buried under the resin layer 400 .

The resin layer 400 may be in contact with the surface of the light emitting device 200 and may be in contact with the exit surface of the light emitting device 200 . A portion of the resin layer 400 may be disposed in the opening 301 of the first reflective member 300 . A portion of the resin layer 400 may be in contact with the upper surface of the substrate 100 through the opening 301 of the first reflective member 300 . Accordingly, a portion of the resin layer 400 is in contact with the substrate 100 , thereby fixing the first reflective member 300 between the resin layer 400 and the substrate 100 .

The resin layer 400 may be formed to have a height higher than the thickness of the light emitting device 200 . For example, the height of the resin layer 400 may be defined as a first height h1, and the first height h1 may be about 1 mm or more. In detail, the first height h1 of the resin layer 400 may be about 1 mm to about 10 mm. When the first height h1 is less than about 1 mm, the light emitted from the light emitting device 200 may not be effectively guided. Accordingly, it may be difficult for the uniform lighting device 10 to implement a uniform surface light source. In addition, when the first height h1 is less than about 1 mm, it may be difficult to effectively protect the light emitting device 200 , and adhesion between the substrate 100 and the first reflective member 300 may be low. In addition, when the first height h1 exceeds about 10 mm, light loss may occur due to an increase in the movement path of the light emitted from the light emitting device 200 , and the luminance of the surface light source may be reduced. Accordingly, the height of the resin layer 400 preferably satisfies the above-described range.

In addition, the vertical height from the upper surface of the resin layer 400 to the upper surface of the light emitting device 200 may be greater than the thickness of the light emitting device 200 . For example, the height from the upper surface of the resin layer 400 to the upper surface of the light emitting device 200 may be about 3 to about 15 times the thickness of the light emitting device 200 . The thickness of the resin layer 400 and the thickness of the light emitting device 200 satisfies the above-described ranges in order to effectively guide the point light source emitted from the light emitting device 200 and emit it in the form of a line light source or a surface light source. desirable.

That is, in the embodiment, the light emitted from the light emitting device 200 may emit a line light source or a surface light source through the resin layer 400 . In this case, the first reflective member 300 may be disposed under the resin layer 400 to effectively emit light emitted from the light emitting device 200 toward the upper surface of the resin layer 400 . Accordingly, the light source module 1000 according to the embodiment may have improved light efficiency.

The light guide member 600 may be disposed on the light source module 1000 . The light guide member 600 is provided with a transparent material and may include at least one of PC, OPS, PMMA, PVC, PET, COC, and PEN resin. The light guide member 600 may serve to diffuse the light provided from the light source module 1000 into a line light source or a surface light source.

To this end, the light guide member 600 may be connected to the light source module 1000 . For example, the light guide member 600 may be connected to the resin layer 400 of the light source module 1000 . In detail, the light guide member 600 may be connected to the upper surface of the resin layer 400 .

The light guide member 600 may be disposed in the insertion groove 400h formed in the resin layer 400 . For example, the upper surface of the resin layer 400 may include an insertion groove 400h into which a part of the light guide member 600 is inserted. The insertion groove 400h may have a concave shape from the upper surface of the resin layer 400 to the lower surface of the resin layer 400 .

The light guide member 600 may have a planar shape corresponding to the insertion groove 400h. For example, when the light guide member 600 has a rectangular pillar shape, the top view shape of the insertion groove 400h may be a rectangular shape, and when the light guide member 600 has a cylindrical shape, the insertion groove The top view shape of 400h may be circular.

A portion of the light guide member 600 may be inserted into the insertion groove 400h. For example, one end of the light guide member 600 may be disposed to be inserted into the insertion groove 400h.

The light guide member 600 inserted into the insertion groove 400h may have a set horizontal width. For example, the horizontal width d2 of the light guide member 600 inserted into the insertion groove 400h may be about 50% or more of the horizontal width d1 of the upper surface of the resin layer 400 . In detail, the horizontal width d2 of the light guide member 600 inserted into the insertion groove 400h may be about 50% to about 90% of the horizontal width d1 of the upper surface of the resin layer 400 . . When the horizontal width d2 of the light guide member 600 is less than about 50% of the horizontal width d1 of the upper surface of the resin layer 400, it is emitted from the light source module 1000 and the light guide member 600 ) may be less light. Accordingly, the luminance of the light L emitted through the exit surface 603 of the light guide member 600 may be low. In addition, when the horizontal width d2 of the light guide member 600 exceeds about 90% of the horizontal width d1 of the upper surface of the resin layer 400, the light guide member 600 and the resin layer The reliability between 400 may be degraded. That is, it may be difficult to effectively support the light guide member 600 because the horizontal width of the resin layer 400 disposed around the insertion groove 400h is too small.

In addition, the light guide member 600 inserted into the insertion groove 400h may be inserted by a set height. For example, a height of the light guide member 600 inserted into the insertion groove 400h may be defined as a second height h2, and the second height h2 may be defined as the first height h1. may be less than or equal to about 60% of In detail, the second height h2 may be 20% to about 60% of the first height h1. That is, the depth of the insertion groove 400h may be less than or equal to about 60% of the total height h1 of the resin layer 400 . In detail, the depth of the insertion groove 400h may be about 20% to about 60% of the total height h1 of the resin layer 400 . When the second height h2 is less than about 20% of the first height h1, the light guide member 600 inserted into the resin layer 400 is small so that the resin layer 400 is the light guide. It may be difficult to effectively support the member 600 . In addition, when the second height h2 exceeds about 60% of the first height h1 , the light emitted from the light source module 1000 and provided to the light guide member 600 is small, so that the light The luminance of the light emitted through the exit surface 603 of the guide member 600 may be low. Preferably, in consideration of the reliability of the connection between the light guide member 600 and the resin layer 400 and the light efficiency emitted through the light guide member 600, the second height h2 is the h1) from about 45% to about 55%. In this case, the light guide member 600 may be stably connected to the resin layer 400 , and the amount of light transmitted from the light source module 1000 to the light guide member 600 may be maximized.

The light guide member 600 may include an exit surface 603 and a bottom surface 601 . The exit surface 603 may be a surface to which the light L is added. For example, the emitting surface 603 may be a surface emitting the light provided from the light source module 1000 to the outside of the light guide member 600 . In addition, the bottom surface 601 is a surface facing the exit surface 603 , and transmits the light from the light source module 1000 provided through one end of the light guide member 600 to the light guide member 600 . It may be a surface guiding in the other end direction.

A plurality of optical patterns 605 may be disposed on the bottom surface 601 of the light guide member 600 . The optical pattern 605 may have a shape protruding from the bottom surface 601 . For example, the optical pattern 605 may have a shape protruding from the bottom surface 601 toward the emission surface 603 .

The plurality of optical patterns 605 may be spaced apart from each other on the bottom surface 601 , and may be disposed to extend from one end of the light guide member 600 to the other end. In this case, the density of the plurality of optical patterns 605 may be changed. In detail, the density of the plurality of optical patterns 605 may increase as the distance from the light source module 1000 increases. That is, the density of the optical pattern 605 may increase from one end to the other end of the light guide member 600 .

Also, the sizes of the plurality of optical patterns 605 may vary. In detail, the height of the plurality of optical patterns 605 may increase as the distance from the light source module 1000 increases. That is, the height of the optical pattern 605 may increase from one end of the light guide member 600 to the other end. For example, the plurality of optical patterns 605 may have a triangular pyramid shape including the bottom surface 601 and inclined side surfaces. In this case, the angle of inclination between the bottom surface 601 and the inclined side surface may increase as the distance from the light source module 1000 increases. That is, the plurality of optical patterns 605 may increase in height from the one end to the other end, and may have a shape in which the inclination angle gradually increases.

Accordingly, the optical pattern 605 can effectively reflect and/or diffusely reflect the light incident on the light guide member 600 , and can emit uniform light L through the emitting surface 603 . have.

In addition, as the light guide member 600 is arranged with a horizontal width d2 and a height h2 set with respect to the resin layer 400 , the length dn of the exit surface 603 is equal to the length dn of the resin layer 400 . ) may be longer than the height h1. For example, the length dn of the exit surface 603 may be about 5 times or more of the height h1 of the resin layer 400 . In detail, the length dn of the exit surface 603 may be about 5 times to about 250 times the height h1 of the resin layer 400 . In more detail, the length dn of the emission surface 603 may be about 5 times to about 200 times the height h1 of the light source module 1000 .

The lighting device 10 may further include an adhesive member 710 . The adhesive member 710 may be disposed between the resin layer 400 and the light guide member 600 . The adhesive member 710 may be disposed in the insertion groove 400h to fix the light guide member 600 in the insertion groove 400h. The adhesive member 710 may be made of a transparent material. In detail, the adhesive member 710 may include a resin material such as silicone or epoxy, or a UV adhesive. For example, the adhesive member 710 may be made of the same material as the resin layer 400 . Accordingly, the light emitted from the light source module 1000 may be effectively provided to the light guide member 600 .

Accordingly, the lighting device 10 according to the embodiment has a simple structure, and can provide line lighting or surface lighting that emits uniform light in various lengths.

4 and 5 are diagrams for explaining an arrangement relationship between a plurality of light source modules and a light guide member. 6 is a view for explaining a connection region of the light guide member according to the embodiment. In the description using FIGS. 4 to 6 , descriptions of the same and similar components as those of the above-described lighting device are omitted, and the same reference numerals are assigned to the same and similar components.

Referring first to FIG. 4 , the lighting device 10 may include a plurality of light source modules spaced apart from each other. For example, the lighting device 10 may include a first light source module 1000A and a second light source module 1000B spaced apart in a horizontal direction.

In this case, the first light source module 1000A and the second light source module 1000B may be disposed to face each other. For example, upper surfaces of the first light source module 1000A and the second light source module 1000B may be disposed to face each other. In detail, the upper surface of the resin layer 400 of the first light source module 1000A may be disposed to face the upper surface of the resin layer 400 of the second light source module 1000B. That is, the light emitting surface of the light emitting device 200 of the first light source module 1000A and the light emitting surface of the light emitting device 200 of the second light source module 1000B may be disposed to face each other.

A light guide member 600 may be disposed between the first light source module 1000A and the second light source module 1000B. The light guide member 600 may be disposed in an area between the first light source module 1000A and the second light source module 1000B spaced apart from each other and may have an extended shape. The light guide member 600 may have a bar or plate shape, and may extend in at least one shape selected from a straight line and a curved line.

The light guide member 600 may be connected to the first light source module 1000A and the second light source module 1000B. In detail, the light guide member 600 may be disposed with a portion, for example, both ends, inserted into the insertion grooves 400h formed in each of the first light source module 1000A and the second light source module 1000B. For example, one end of the light guide member 600 may be inserted into the insertion groove 400h of the first light source module 1000A to be connected to the first light source module 1000A. In addition, the other end opposite to one end of the light guide member 600 may be inserted into the insertion groove 400h of the second light source module 1000B to be connected to the second light source module 1000B.

The light guide member 600 may include an exit surface 603 and a bottom surface 601 . The emitting surface 603 may be a surface emitting the light (L). For example, the emitting surface 603 may be a surface emitting the light provided from the first light source module 1000A and the second light source module 1000B to the outside of the light guide member 600 . Also, the bottom surface 601 may be a surface facing the exit surface 603 .

The light guide member 600 may include a plurality of optical patterns 605 formed on the bottom surface 601 . The optical patterns 605 may be spaced apart from each other on the bottom surface 601 and have a protruding shape. For example, the optical pattern 605 may have a shape protruding from the bottom surface 601 toward the emission surface 603 .

The plurality of optical patterns 605 may be disposed between the first light source module 1000A and the second light source module 1000B. In this case, the density of the plurality of optical patterns 605 may be changed. In detail, the density of the plurality of optical patterns 605 may increase as the distance from each of the first light source module 1000A and the second light source module 1000B increases. That is, the optical pattern 605 may have the greatest density at the distance from the first light source module 1000A and the second light source module 1000B, for example, in the central region of the light guide member 600 . .

Also, the sizes of the plurality of optical patterns 605 may vary. In detail, the heights of the plurality of optical patterns 605 may increase as they move away from the first light source module 1000A and the second light source module 1000B, respectively. That is, the height of the optical pattern 605 may be the highest in the central region of the light guide member 600 . In addition, when the optical pattern 605 has a triangular pyramid shape including an inclined side surface, the inclination angle formed by the bottom surface 601 and the inclined side surface is the first light source module 1000A and the second light source It may become larger as the distance from each module 1000B increases. That is, the angle of inclination between the bottom surface 601 and the inclined side surface of the optical pattern 605 may be greatest in the central region of the light guide member 600 .

Accordingly, the light guide member 600 may effectively guide the light L provided from each of the first light source module 1000A and the second light source module 1000B. In addition, the light guide member 600 may uniformly emit the incident light L to the outside through the exit surface 603 .

In addition, each of both ends of the light guide member 600 inserted into each of the first light source module 1000A and the second light source module 1000B is a resin layer 400 of each light source module 1000 . It may be arranged with a horizontal width (d2) and a height (h2) set for . Accordingly, the length dn of the exit surface 603 of the light guide member 600 may be longer than that of FIGS. 1 to 3 described above. For example, in this case, the length dn of the emission surface 603 is about the height h1 of one light source module selected from the first light source module 1000A and the second light source module 1000B. It can be 5 times or more. In detail, the length of the exit surface 603 may be about 20 times to about 500 times the height h1 of the light source module.

Accordingly, the lighting device 10 according to the embodiment has a simple structure in which a plurality of light source modules 1000 are disposed at both ends of the light guide member 600 , and can effectively provide light to the light guide member 600 . Also, the light guide member 600 may emit uniform light in various lengths. Accordingly, the embodiment may provide line illumination or surface illumination having excellent light uniformity.

Also, referring to FIGS. 5 and 6 , the lighting device 10 may include a plurality of light source modules spaced apart from each other. For example, the lighting device 10 may include a first light source module 1000A and a second light source module 1000B spaced apart in a horizontal direction.

In this case, the first light source module 1000A and the second light source module 1000B may be disposed to face each other. For example, each side of the first light source module 1000A and the second light source module 1000B may be disposed to face each other. That is, the light emitting surface of the light emitting device 200 of the first light source module 1000A and the light emitting surface of the light emitting device 200 of the second light source module 1000B may be disposed so as not to face each other.

A light guide member 600 including a plurality of light guide units may be disposed between the first light source module 1000A and the second light source module 1000B. For example, the light guide member 600 may include a first light guide unit 610 , a second light guide unit 620 , and a third light guide unit 630 . The first light guide unit 610 , the second light guide unit 620 , and the third light guide unit 630 may be integrally formed. In addition, although not shown in the drawings, between the first light guide unit 610 and the third light guide unit 630 and between the second light guide unit 620 and the third light guide unit 630 . Adhesive members (not shown) may be disposed and connected to each other.

The first light guide unit 610 may be disposed on the first light source module 1000A. The first light guide part 610 may be connected to the resin layer 400 of the first light source module 1000A. The first light guide part 610 may be disposed in the insertion groove 400h formed on the upper surface of the resin layer 400 of the first light source module 1000A. One end of the first light guide part 610 may be disposed in the insertion groove 400h. The first light guide part 610 may extend in a vertical direction. For example, the first light guide unit 610 may extend in a direction corresponding to the optical axis of the light emitting device 200 of the first light source module 1000A. The first light guide part 610 may extend in at least one shape selected from a straight line and a curved line.

The second light guide unit 620 may be disposed on the second light source module 1000B. The second light guide unit 620 may be spaced apart from the first light guide unit 610 , and the second light guide unit 620 may be connected to the resin layer 400 of the second light source module 1000B. . The second light guide part 620 may be disposed in the insertion groove 400h formed on the upper surface of the resin layer 400 of the second light source module 1000B. One end of the second light guide part 620 may be disposed in the insertion groove 400h. The second light guide part 620 may extend in a vertical direction. For example, the second light guide unit 620 may extend in a direction corresponding to the optical axis of the light emitting device 200 of the second light source module 1000B. The second light guide part 620 may extend in at least one shape selected from a straight line and a curved line.

The third light guide unit 630 may be disposed between the first light guide unit 610 and the second light guide unit 620 . In detail, the third light guide unit 630 is disposed between the other end opposite to one end of the first light guide unit 610 and the other end opposite to the one end of the second light guide unit 620 . Components 610 and 620 may be connected. The third light guide unit 630 may extend in a direction different from that of the first light guide unit 610 and the second light guide unit 620 . The third light guide part 630 may extend in a horizontal direction. For example, the third light guide part 630 may extend in a direction perpendicular to the optical axis of the first light source module 1000A or the second light source module 1000B. The third light guide unit 630 may extend between the first and second light guide units 610 and 620 in at least one shape selected from a straight line and a curved line.

The light guide member 600 may include a plurality of exit surfaces 613 , 623 , 633 and a plurality of bottom surfaces 611 , 621 , 631 . For example, the first light guide part 610 may include a first exit surface 613 and a first bottom surface 611 , and the second light guide part 620 may include a second exit surface ( 623 ) and a second bottom surface 621 .

A plurality of optical patterns 605 may be disposed on the first bottom surface 611 and the second bottom surface 621 . Densities of the plurality of optical patterns 605 respectively disposed on the first bottom surface 611 and the second bottom surface 621 may vary. For example, the density of the plurality of optical patterns 605 may increase as the distance from each of the first light source module 1000A and the second light source module 1000B increases.

The sizes of the plurality of optical patterns 605 respectively disposed on the first bottom surface 611 and the second bottom surface 621 may vary. For example, the height of the plurality of optical patterns 605 may increase as the distance from each of the first light source module 1000A and the second light source module 1000B increases.

Also, the third light guide part 630 may include a third exit surface and a third bottom surface 631 .

A plurality of optical patterns 605 may be disposed on the third bottom surface 631 . The density of the plurality of optical patterns 605 disposed on the third bottom surface 631 may vary. For example, the density of the plurality of optical patterns 605 may increase as the distance from each of the first light guide unit 610 and the second light guide unit 620 increases. That is, the optical pattern 605 has the greatest density at the distance from the first light guide unit 610 and the second light guide unit 620 , for example, in the central region of the third light guide unit 630 . can have

Also, sizes of the plurality of optical patterns 605 disposed on the third bottom surface 631 may vary. For example, the heights of the plurality of optical patterns 605 may increase as the distance from the first light guide unit 610 and the second light guide unit 620 increases, respectively. That is, the optical pattern 605 may have the highest height in the central region of the third light guide part 630 .

A length of the first exit surface 613 may be the same as a length of the second exit surface 623 . That is, the first light guide unit 610 and the second light guide unit 620 disposed on the first and second light source modules 1000A and 1000B may have the same vertical length.

Also, a length dm of the first and second exit surfaces 613 and 623 may be shorter than a length dn of the third exit surface 633 . That is, the vertical length of the first and second light guide parts 610 and 620 may be shorter than the horizontal length of the third light guide part 630 . For example, a ratio of the length dm of the first and second exit surfaces 613 and 623 to the length dn of the third exit surface 633 may be 1:5 to 1:500. When the ratio is less than or exceeding the above range, the uniformity of each light emitted through the first to third emission surfaces 613 , 623 , and 633 may be reduced. In detail, the luminance of the light emitted through the central region of the third emitting surface 633 is different from the luminance of the light emitted through the first and second emitting surfaces 613 and 623, so that the uniformity characteristic may be deteriorated. . Preferably, the ratio may be 1:5 to 1:300 in consideration of luminance uniformity of light emitted from the first to third emission surfaces 613 , 623 , and 633 , respectively.

In addition, the light guide member 600 may include a connection region to which the light guide parts 610 , 620 , and 630 are respectively connected. For example, the light guide member 600 may include a first connection area 651 to which the first light guide unit 610 and the third light guide unit 630 are connected. The first connection area 651 may be an area in which the first emission surface 613 and the third emission surface 633 are connected. In addition, the light guide member 600 may include a second connection region 652 to which the second light guide unit 620 and the third light guide unit 630 are connected. The second connection area 652 may be an area in which the second emission surface 623 and the third emission surface 633 are connected.

In this case, the optical pattern 605 may be disposed in the first connection area 651 and the second connection area 652 . That is, the optical pattern 605 may be disposed between the first exit surface 613 and the third exit surface 633 and between the second exit surface 623 and the third exit surface 633 . have. In this case, the density of the optical pattern 605 disposed in the first and second connection areas 651 and 652 may be the highest among the entirety of the light guide member 600 . In addition, the size of the optical pattern 605 disposed in the first and second connection areas 651 and 652 may be the largest with respect to the entire light guide member 600 .

Each of the first connection area 651 and the second connection area 652 may have a set shape. For example, the first exit surface 613 and the third exit surface 633 forming the first connection area 651 may have a set shape, and form the second connection area 652 . The second emission surface 623 and the third emission surface 633 may have a set shape.

The first connection area 651 and the second connection area 652 may be provided in the same shape as each other. For example, the first connection area 651 and the second connection area 652 may be perpendicular to each other as shown in FIG. 5 . In detail, each of the inclination angle formed between the first exit surface 613 and the third exit surface 633 and the inclination angle formed between the second exit surface 623 and the third exit surface 633 may be right angles.

Also, the first connection area 651 and the second connection area 652 may have various shapes as shown in FIG. 6 .

For example, the first connection area 651 and the second connection area 652 may be provided in an obtuse angle shape as shown in FIG. 6A . In detail, the inclination angle formed by the first exit surface 613 and the third exit surface 633, and the inclination angle formed by the second exit surface 623 and the third exit surface 633, respectively, are about 120 degrees or less. may be obtuse. The inclination angles of the first connection area 651 and the second connection area 652 preferably satisfy the above-described range in order to effectively transmit light to the third light guide part 630 .

Also, the first connection area 651 and the second connection area 652 may be provided in a curved shape as shown in FIG. 6(b) . For example, the first connection area 651 and the second connection area 652 may be provided in a curved shape convex from the bottom surface of the light guide member 600 toward the emission surface.

In addition, the first connection area 651 and the second connection area 652 may be provided in a form including a sub-surface (not shown) as shown in FIG. 6(c) . For example, the first connection area 651 includes a first sub-surface (not shown) disposed between the first emission surface 613 and the third emission surface 633 , and the second connection The area 652 may include a second sub-surface (not shown) disposed between the second emission surface 623 and the third emission surface 633 .

The first and second sub-surfaces may be surfaces for effectively providing the light provided to the first light guide unit 610 to the third light guide unit 630 . To this end, the first sub-surface may form an obtuse angle with each of the first emitting surface 613 and the third emitting surface 633 , and the second sub-surface may have an obtuse angle with the second emitting surface 623 and the second emitting surface 623 . 3 may form an obtuse angle with each of the exit surfaces 633 . Accordingly, the light provided to the other end of each of the first light guide unit 610 and the second light guide unit 620 is reflected by the first and second sub-surfaces to the third light guide unit 630 . can move effectively.

That is, the lighting apparatus 10 according to the embodiment may effectively guide the light provided from each of the first light source module 1000A and the second light source module 1000B by the light guide member 600 . In addition, the light guide member 600 may uniformly emit the incident light L to the outside through the exit surfaces 613 , 623 , and 633 .

In addition, in the lighting device ( ), a plurality of light source modules 1000 are disposed at one end of the first and second light guide units 610 and 620 , and a light source is disposed at the third light guide unit 630 . The light guide member 600 can effectively provide light to the entire light guide member 600 , and the light guide member 600 can emit uniform light in various lengths and shapes. Accordingly, the embodiment may provide line illumination or surface illumination having excellent light uniformity.

7 is a cross-sectional view in which a second reflective member is added in the lighting device according to the embodiment. In the description using FIG. 7 , descriptions of the same and similar components as those of the lighting device are omitted, and the same reference numerals are assigned to the same and similar components.

Referring to FIG. 7 , the light source module 1000 may further include a second reflective member 350 . The second reflective member 350 may be disposed on the resin layer 400 . For example, the second reflective member 350 may be disposed on the outer surface of the resin layer 400 .

The second reflective member 350 may be provided in the form of a film having a metal material or a non-metal material. In addition, the second reflective member 350 may be provided by being deposited on the outer surface of the resin layer 400 .

The second reflective member 350 may include a metallic material or a non-metallic material. The metallic material may include a metal such as aluminum, silver, or gold. The non-metallic material may include a plastic material or a resin material. The plastic material is polyethylene, polypropylene, polystyrene, polyvinyl chloride, polybiphenyl chloride, polyethylene terephthalate, polyvinyl alcohol, polycarbonate, polybutylene terephthalate, polyethylene naphthalate, polyamide, polyacetal, polyphenylene. It may be any one selected from the group consisting of ether, polyamideimide, polyetherimide, polyetheretherketone, polyimide, polytetrafluoroethylene, liquid crystal polymer, fluororesin, copolymers thereof, and mixtures thereof. As the resin material, a reflective material, for example, TiO ₂ , Al ₂ O ₃ , or SiO ₂ may be added in silicon or epoxy. The second reflective member 350 may be implemented as a single layer or multiple layers, and light reflection efficiency may be improved by such a layer structure. The second reflective member 350 according to the embodiment reflects the light incident into the resin layer 400 , thereby increasing the amount of light so that the light is emitted with a uniform distribution.

The second reflective member 350 may be disposed on at least one of the outer surfaces of the resin layer 400 . For example, the second reflective member 350 may be disposed on at least one of a side surface and an upper surface of the resin layer 400 . In this case, when the second reflective member 350 is disposed on the upper surface of the resin layer 400 , the second reflective member 350 may be disposed in an area that does not overlap the insertion groove 400h. .

Accordingly, the light emitted from the light source module 1000 may be reflected by the first reflective member 300 and the second reflective member 350 to be effectively guided to the light guide member 600 . Accordingly, the lighting device 10 according to the embodiment may have improved luminous efficiency.

8 is another cross-sectional view of the lighting device according to the embodiment, and FIG. 9 is a view for explaining an arrangement relationship between a plurality of light source modules and a light guide member. In the description using FIGS. 8 and 9 , descriptions of the same and similar components as those of the lighting device are omitted, and the same reference numerals are assigned to the same and similar components.

8 and 9 , the light guide member 600 may be connected to the light source module 1000 . For example, the light guide member 600 may be connected to the resin layer 400 of the light source module 1000 . In detail, the light guide member 600 may be connected to one side of the resin layer 400 .

The light guide member 600 may be disposed in the insertion groove 400h formed in the resin layer 400 . For example, one side of the resin layer 400 may include an insertion groove 400h into which a part of the light guide member 600 is inserted. The insertion groove 400h may have a concave shape from one side of the resin layer 400 toward the other side opposite to one side of the resin layer 400 .

A portion of the light guide member 600 may be inserted into the insertion groove 400h. For example, one end of the light guide member 600 may be disposed to be inserted into the insertion groove 400h.

The light guide member 600 inserted into the insertion groove 400h may have a set height. For example, the second height h2 of the light guide member 600 inserted into the insertion groove 400h may be less than or equal to about 40% of the horizontal width d1 of the upper surface of the resin layer 400 . In detail, the second height h2 of the light guide member 600 may be about 20% to about 40% of the horizontal width d1 of the upper surface of the resin layer 400 . When the second height h2 with respect to the horizontal width d1 does not satisfy the above-described range, the light emitted from the light source module 1000 may not be effectively provided to the light guide member 600 . . Also, it may be difficult for the light guide member 600 to be stably coupled to the light source module 1000 .

In addition, the horizontal width d2 of the light guide member 600 inserted into the insertion groove 400h may be lower than the height h1 of the resin layer 400 . For example, the horizontal width d2 of the light guide member 600 may be about 30% or less of the first height h1. In detail, the horizontal width d2 of the light guide member 600 may be about 10% to about 30% or less of the first height h1. Accordingly, the third height h3 defined as the height between the lower surface of the resin layer 400 and the light guide member 600 may be about 70% or more of the first height h1. In detail, the third height h3 may be about 70% to 90% of the first height h1.

The light source module 1000 may further include a second reflective member 350 . The second reflective member 350 may be disposed on the outer surface of the resin layer 400 . For example, the second reflective member 350 may be disposed on at least one of an upper surface and a plurality of side surfaces of the resin layer 400 . In this case, when the second reflective member 350 is disposed on one side of the resin layer 400 , the second reflective member 350 may be disposed in an area that does not overlap the insertion groove 400h. have.

That is, the light guide member 600 may be disposed to have a height h2 and a horizontal width d2 set at a point higher than 50% of the first height h1 of the resin layer 400 . Accordingly, the light guide member 600 can effectively guide the light emitted from the light source module 1000 in the lateral direction of the resin layer 400 . In addition, the light emitted from the light emitting device 200 by the second reflective member 350 disposed on the side surface and the upper surface of the resin layer 400 can be effectively guided to the light guide member 600, It may have improved luminous efficiency.

Also, referring to FIG. 9 , the lighting device 10 may include a first light source module 1000A and a second light source module 1000B that are spaced apart from each other. Each side of the first light source module 1000A and the second light source module 1000B may be disposed to face each other. That is, the light emitting surface of the light emitting device 200 of the first light source module 1000A and the light emitting surface of the light emitting device 200 of the second light source module 1000B may be disposed so as not to face each other.

A light guide member 600 may be disposed between the first light source module 1000A and the second light source module 1000B. The light guide member 600 may be disposed in an area between the first light source module 1000A and the second light source module 1000B spaced apart from each other and may have an extended shape. The light guide member 600 may have a bar or plate shape, and may extend in at least one shape selected from a straight line and a curved line.

The light guide member 600 may be connected to the first light source module 1000A and the second light source module 1000B. For example, one end of the light guide member 600 may be inserted into an insertion groove 400h formed on a side surface of the first light source module 1000A to be connected to the first light source module 1000A. In addition, the other end of the light guide member 600 may be inserted into the insertion groove 400h formed on the side surface of the second light source module 1000B to be connected to the second light source module 1000B.

The light guide member 600 may include a bottom surface 601 and an exit surface 603 . The emitting surface 603 may be a surface emitting the light (L). For example, the emitting surface 603 may be a surface emitting the light provided from the first light source module 1000A and the second light source module 1000B to the outside of the light guide member 600 . Also, the bottom surface 601 may be a surface facing the exit surface 603 .

The light guide member 600 may include a plurality of optical patterns 605 formed on the bottom surface 601 . The optical patterns 605 may be spaced apart from each other on the bottom surface 601 and have a protruding shape. For example, the optical pattern 605 may have a shape protruding from the bottom surface 601 toward the emission surface 603 .

The plurality of optical patterns 605 may be disposed between the first light source module 1000A and the second light source module 1000B. In this case, the density of the plurality of optical patterns 605 may be changed. In detail, the density of the plurality of optical patterns 605 may increase as the distance from each of the first light source module 1000A and the second light source module 1000B increases. That is, the optical pattern 605 may have the greatest density at the distance from the first light source module 1000A and the second light source module 1000B, for example, in the central region of the light guide member 600 . .

Also, the sizes of the plurality of optical patterns 605 may vary. In detail, the heights of the plurality of optical patterns 605 may increase as they move away from the first light source module 1000A and the second light source module 1000B, respectively. That is, the height of the optical pattern 605 may be the highest in the central region of the light guide member 600 . In addition, when the optical pattern 605 has a triangular pyramid shape including an inclined side surface, the inclination angle formed by the bottom surface 601 and the inclined side surface is the first light source module 1000A and the second light source It may become larger as the distance from each module 1000B increases. That is, the angle of inclination between the bottom surface 601 and the inclined side surface of the optical pattern 605 may be greatest in the central region of the light guide member 600 .

Accordingly, the light guide member 600 may effectively guide the light L provided from each side surface of the first light source module 1000A and the second light source module 1000B. In addition, the light guide member 600 may uniformly emit the incident light L to the outside through the exit surface 603 . In addition, the length dn of the emission surface 603 of the light guide member 600 is the height h1 of one light source module selected from the first light source module 1000A and the second light source module 1000B. It may be about 5 times or more of In detail, the length of the exit surface 603 may be about 20 times to about 500 times the height h1 of the light source module.

10 is another cross-sectional view of a lighting device according to an embodiment. In the description using FIG. 10 , descriptions of the same and similar components as those of the lighting device are omitted, and the same reference numerals are assigned to the same and similar components.

Referring to FIG. 10 , the light guide member 600 may be disposed on the light source module 1000 . In this case, the above-described insertion groove 400h may be omitted in the resin layer 400 , and the light guide member 600 may be connected to the light source module 1000 .

For example, the light guide member 600 may have a greater horizontal width than the horizontal width d1 of the resin layer 400 . In addition, the light guide member 600 may include a groove (not shown) corresponding to the horizontal width d1 of the resin layer 400 and the height of the light source module 1000 . Accordingly, the light source module 1000 may be disposed to be inserted into the groove of the light guide member 600 . In this case, the adhesive member 710 may be disposed between the light source module 1000 and the light guide member 600 , and the two components 1000 and 600 may be connected via the adhesive member 710 . .

Accordingly, the light emitted from the upper surface and the side surface of the light source module 1000 can be effectively provided to the light guide member 600 , and the lighting device 10 has a simple structure and emits uniform light in various lengths. Emitting line illumination or surface illumination may be provided.

11 to 13 are views illustrating examples in which a lamp including a lighting device according to an embodiment is applied to a vehicle. In detail, FIG. 11 is a top view of a vehicle to which a lamp including a lighting device according to an embodiment is applied, FIG. 12 is an example in which the lighting device according to the embodiment is applied as a front lamp of a vehicle, and FIG. 13 is lighting according to the embodiment An example of the device being applied to a vehicle's banishment ramp.

11 to 13 , the lamp according to the embodiment includes the lighting device 10 and may be applied to a vehicle 2000 . One or more lamps may be disposed in at least one of a front, a rear, and a side of the vehicle 2000 .

For example, referring to FIG. 12 , the lamp may be applied to a front lamp 2100 of the vehicle 2000 . The front lamp 2100 may include a first cover member 2110 and at least one first lamp module 2120 including the lighting device 10 .

The first cover member 2110 accommodates the first lamp module 2120 and may include a light-transmitting material. In this case, the first cover member 2110 may have a curve according to the design of the vehicle 2000 , and may be provided in various shapes such as a flat surface or a curved surface according to the shape of the first lamp module 2120 .

The front lamp 2100 may provide a plurality of functions by controlling the driving timing of the lighting device 10 included in the first lamp module 2120 . For example, the front lamp 2100 may provide at least one function of a headlamp, a turn indicator, a daytime running lamp, a high beam, a low beam, and a fog lamp by light emission of the lighting device 10 . In addition, the front lamp 2100 may provide additional functions such as a welcome light or a celebration effect when the driver opens the vehicle door. In this case, the front lamp 2100 may emit light having various lengths or shapes according to the shape and length of the light guide member 600 of the lighting device 10 .

Also, referring to FIGS. 13 and 14 , the lamp may be applied to the rear lamp 2200 of the vehicle 2000 . The rear lamp 2200 may include a second cover member 2210 and at least one second lamp module 2220 including the lighting device 10 .

The second cover member 2210 accommodates the second lamp module 2220 and may include a light-transmitting material. In this case, the second cover member 2210 may have a curve according to the design of the vehicle 2000 , and may be provided in various shapes such as a flat surface or a curved surface according to the shape of the second lamp module 2220 .

The rear lamp 2200 may provide a plurality of functions by controlling the driving timing of the lighting device 10 included in the second lamp module 2220 . For example, the rear lamp 2200 may provide at least one function of a side light, a brake light, and a turn indicator light by the light emission of the lighting device 10 .

For example, as shown in FIG. 13 , the rear lamp 2200 may perform the functions of a side lamp and a brake lamp by emitting light from the lighting device 10 . In this case, the long axis length of the rear lamp 2200 may be formed to correspond to the rear width of the vehicle, and uniform light may be provided toward the rear when the lighting device 10 emits light. In detail, the light guide member 600 of the lighting device 10 may have a shape extending in one direction. In this case, the light guide member 600 may have a set length dn, and the light guide member 600 transmits light of uniform luminance through the emission surface 603 corresponding to the length dn. It may be provided at the rear of the vehicle 2000 .

In addition, the rear lamp 2200 may perform the functions of a side lamp and a brake lamp by the light emission of the lighting device 10 as shown in FIG. 14 . In this case, the light guide member 600 of the lighting device 10 may have a shape including a plurality of light guides extending in different directions. For example, in the light guide member 600 , first to third light guide portions may be connected in a “c” shape as shown in FIG. 14 . Accordingly, the rear lamp 2200 may have a three-dimensional effect by emitting light in the shape of the light guide member 600 , for example, a “c” shape, and may have improved aesthetics.

In addition, at least one of the front lamp 2100 and the rear lamp 2200 may be provided in a color corresponding to the vehicle 2000 . For example, at least one of the front lamp 2100 and the rear lamp 2200 may further include a wavelength conversion layer (not shown) disposed on the lighting device 10 . In this case, the wavelength conversion layer may be provided in a color corresponding to the vehicle.

Accordingly, when at least one of the front lamp 2100 and the rear lamp 2200 is in an on state, the lighting device 10 may emit light of a set wavelength, and the lamp is turned off. In the (off) state, the lamp may have a color corresponding to that of the vehicle 2000 . Accordingly, the lamp may provide a hidden effect that is not visually recognized from the outside when the lighting device 10 is turned off, and thus may have more improved aesthetics.

Features, structures, effects, etc. described in the above embodiments are included in at least one embodiment of the present invention, and are not necessarily limited to only one embodiment. Furthermore, features, structures, effects, etc. illustrated in each embodiment can be combined or modified for other embodiments by those of ordinary skill in the art to which the embodiments belong. Accordingly, the contents related to such combinations and modifications should be interpreted as being included in the scope of the present invention.

In addition, although the embodiment has been described above, it is merely an example and does not limit the present invention, and those of ordinary skill in the art to which the present invention pertains are exemplified above in a range that does not depart from the essential characteristics of the present embodiment. It can be seen that various modifications and applications that have not been made are possible. For example, each component specifically shown in the embodiment can be implemented by modification. And differences related to such modifications and applications should be construed as being included in the scope of the present invention defined in the appended claims.

Claims (9)

light source module; and
It includes a light guide member disposed on the light source module,
The light source module,
Board;
a light emitting device disposed on the substrate;
a first reflective member disposed on the substrate; and
a resin layer disposed on the first reflective member;
The resin layer includes at least one insertion groove into which a part of the light guide member is inserted,
A height of the light guide member disposed in the insertion groove is 60% or less of the total height of the resin layer. According to claim 1,
The insertion groove is formed on the upper surface of the resin layer and has a concave shape from the upper surface of the resin layer to the lower surface of the resin layer,
A horizontal width of the light guide member disposed in the insertion groove is 50% or more of a horizontal width of an upper surface of the resin layer. 3. The method of claim 2,
The light source module includes first and second light source modules spaced apart from each other,
The first and second light source modules are disposed so that their upper surfaces face each other,
One end of the light guide member is connected to the first light source module, and the other end of the light guide member is connected to the second light source module. 4. The method of claim 3,
The light guide member includes a plurality of optical patterns having a protruding shape on the inner surface of the light guide member,
The density of the optical pattern increases as the distance from each of the first and second light source modules increases. 3. The method of claim 2,
The light source module includes first and second light source modules spaced apart from each other,
The first and second light source modules are disposed to face each side,
The light guide member,
a first light guide part having one end connected to the first light source module;
a second light guide part having one end connected to the second light source module;
and a third light guide unit connecting the other end of the first light guide unit and the other end of the second light guide unit. 6. The method of claim 5,
The first and second light guide portions extend in a first direction,
The third light guide portion extends in a second direction different from the first direction,
The length in the first direction of the first and second light guide parts is shorter than the length in the second direction of the third light guide part. 7. The method of claim 6,
Each of the first to third light guides includes a plurality of optical patterns protruding on the inner surface,
The density of the optical patterns respectively formed in the first and second light guide parts increases as the distance from the first and second light source modules increases,
The density of the optical pattern formed in the third light guide unit increases as the distance from the first and second light guide units increases. According to claim 1,
An adhesive member disposed between the resin layer and the light guide member,
The adhesive member includes a light-transmitting material. According to claim 1,
Further comprising a second reflective member disposed on the outer surface of the resin layer,
The second reflective member is disposed on at least one of a side surface and an upper surface of the resin layer.

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