Lighting device and vehicle lamp comprising the same

Abstract

Embodiments of the present invention disclose a lighting device including a base member including a straight portion and a curved portion, a substrate including a first substrate disposed on the straight portion of the base member and a second substrate disposed on the curved portion, a plurality of light sources disposed on each of the first substrate and the second substrate, a resin layer including a first resin portion disposed on the first substrate and a second resin portion surrounding the second substrate, and a phosphor layer disposed on the resin layer, wherein an outer side surface of the second resin portion can include a curved surface.

Description

[0001] This case is a divisional application, the parent application being the application filed on January 23, 2020, with application number 202080010747.9 and invention title "Lighting device and vehicle lamp including the lighting device". Technical Field

[0002] Embodiments of the present invention relate to a surface-emitting lighting device for improving light efficiency. Background Technology

[0003] Generally, compared to traditional light sources (e.g., fluorescent lamps and incandescent lamps), light-emitting devices (such as light-emitting diodes (LEDs)) have advantages such as lower power consumption, shorter lifespan, faster response times, safety, and environmental friendliness. Such LEDs are used in various lighting devices, such as various display devices, indoor lights, and outdoor lights. Recently, lights using light-emitting devices have been proposed as light sources for vehicles. Compared to incandescent lamps, light-emitting devices have the advantage of lower power consumption. Due to their small size, the design freedom of the lamp can be increased, and they are economical due to their shorter lifespan. This type of vehicle lighting device uses a surface light source, thus producing a three-dimensional effect and unique aesthetic appeal. In traditional vehicle taillights, the light source module is formed with a curved lamp support structure corresponding to the lamp support. To form the light source module with curvature, the thinnest possible PCB substrate is used; therefore, the module's durability is weak. Furthermore, during the process of imparting curvature to the PCB substrate, stress is applied to both the PCB substrate and the light source, further weakening the structure's durability. In addition, because the light source module is formed with curvature, the light distribution at the rear of the vehicle is reduced, and additional light sources are attached to conform to the light distribution rules, which increases the cost. Summary of the Invention

[0004] Technical issues

[0005] Embodiments of the present invention may provide a lighting device for preventing the durability degradation of a light source module and a vehicle lamp including the lighting device.

[0006] One embodiment of the present invention can provide a lighting device for satisfying the light distribution pattern of the rear and rear sides of a vehicle, and a vehicle lamp including the lighting device.

[0007] Technical solution

[0008] An illumination device according to an embodiment of the present invention includes: a base member comprising a straight portion and a curved portion bent at one end of the straight portion, the curved portion having a curvature; a substrate comprising a first substrate disposed on the straight portion of the base member and a second substrate disposed parallel to the first substrate and spaced apart from the curved portion of the base member; a plurality of light sources disposed on the substrate; a resin layer comprising a first resin portion disposed on the first substrate and a second resin portion disposed on the curved portion of the base member to surround the second substrate; and a phosphor layer disposed on the resin layer, wherein the second resin portion comprises a side contacting the first resin portion and another side facing the surface of the first resin portion, and the side surface of the second resin portion may include a curved surface.

[0009] An illumination device according to an embodiment of the present invention includes: a substrate, the substrate including a first substrate and a second substrate disposed outside the first substrate; a plurality of light sources disposed on each of the first substrate and the second substrate; a resin layer including a first resin portion disposed on the first substrate and a second resin portion disposed on an upper portion, an outer portion and a lower portion of the second substrate; and a phosphor layer disposed on the resin layer, wherein the upper surface of the first resin portion is parallel to the first substrate, the surface of the second resin portion has a curved surface relative to the upper surface of the first substrate and extends outward from the outer surface of the second resin portion, and the surface of the second resin portion may include the curved surface.

[0010] The plurality of light sources includes a first light source closest to the side surface of the second resin portion, and the second resin portion includes: a first point that contacts the phosphor layer in the horizontal direction of the substrate from the center of the first light source, a third point that contacts the phosphor layer and a straight line perpendicular to the substrate from the center of the first light source, and a second point that contacts the phosphor layer between the first point and the third point. The first point contacts the second resin portion, the second point is on a curved surface, and the third point contacts a straight line perpendicular to the substrate at the center of the first light source. The second distance may be greater than the distance from the center of the first light source to the second point and may be less than the third distance from the center of the first light source to the third point.

[0011] The second substrate may be formed of a transparent material and may be electrically connected to the first substrate. Additionally, the second substrate may include a mesh structure with multiple holes and may be electrically connected to the first substrate. The second substrate may include a first substrate portion in a direction perpendicular to the side surface of the first substrate and a second substrate portion parallel to the side surface of the first substrate. The width of the first substrate portion may correspond to the width of the second substrate portion, and the width of the first substrate portion may be smaller than the width of the holes. Multiple light sources may include a second light source disposed below the second substrate.

[0012] According to an embodiment of the present invention, a vehicle lamp includes: a base member coupled to a lamp bracket, the base member including a straight portion and a curved portion bent at one end of the straight portion and having a curvature; an illumination module disposed on the base member; and a red lens disposed on the illumination module, wherein the illumination module includes: a first substrate disposed on the straight portion of the base member; a second substrate disposed parallel to the first substrate and spaced apart from the curved portion of the base member; a plurality of light sources disposed on the first substrate and the second substrate; a first resin portion disposed on the first substrate and the light sources; a second resin portion disposed on the curved portion of the base member to surround the second substrate and the light sources; and a phosphor layer disposed on the first resin portion and the second resin portion, wherein the second resin portion includes a side surface contacting the first resin portion and an other side surface disposed facing the side surface, and the side surface of the second resin portion may include a curved surface.

[0013] Beneficial effects

[0014] Embodiments of the present invention have the effect of preventing durability degradation of the lighting module when the substrate is horizontally arranged. By horizontally arranging the substrate, light conforming to the light distribution law can be emitted from the rear. By forming a second substrate with a transparent material or a mesh structure, the efficiency of light emitted from the side and rear is improved. By additionally providing a light source on the rear surface of the substrate, the efficiency of light emitted from the side and rear is further improved. By using a low-concentration phosphor layer, the cost is reduced. Attached Figure Description

[0015] Figure 1 This is a schematic cross-sectional view showing a vehicle lamp according to a first embodiment of the present invention.

[0016] Figure 2 This is a schematic cross-sectional view showing the structure of the lighting module according to the first embodiment.

[0017] Figure 3 It is shown Figure 1 A plan view of the substrate.

[0018] Figure 4 It is shown Figure 1 A plan view of a variant of the substrate.

[0019] Figure 5 This is a diagram illustrating the direction of light travel of the vehicle lamp according to the first embodiment.

[0020] Figure 6 This is a schematic cross-sectional view showing a vehicle lamp according to a second embodiment of the present invention.

[0021] Figure 7 This is a diagram illustrating the light travel direction of the vehicle lamp according to the second embodiment. Detailed Implementation

[0022] Preferred embodiments of the invention will be described in detail below with reference to the accompanying drawings. The spirit of the invention is not limited to the embodiments described herein and may be implemented in various other forms. One or more components may be selectively combined and substituted within the scope of the spirit of the invention. Furthermore, the terminology used in the embodiments of the invention (including technical and scientific terms), unless specifically defined and explicitly described, is to be interpreted as having a meaning commonly understood by one of ordinary skill in the art to which this invention pertains, and common terms (e.g., terms defined in dictionaries) should be interpretable in light of the context of the relevant art. Moreover, the terminology used in the embodiments of the invention is for explaining the embodiments and is not intended to limit the invention. In this specification, unless otherwise specifically stated in the phrase, the singular form may also include the plural form, and in the case of statements of at least one (or more) of A and / or B, C, it may include one or more of all combinations that can be combined with A, B, and C. In describing components of embodiments of the invention, terms such as first, second, A, B, (a), and (b) may be used. Such terms are only used to distinguish components from other components, and the nature, order, or steps of the corresponding constituent elements may not be determined by the terms. Furthermore, when describing a component as "connected," "coupled," or "joined" to another component, this description can include not only direct connection, coupling, or joining to another component, but also "connected," "coupled," or "joined" through another component between the component and the other component. Additionally, when describing something as being formed or disposed "above" or "below" each component, this description includes not only cases where the two components are in direct contact with each other, but also cases where one or more other components are formed or disposed between the two components. Furthermore, when expressed as "above" or "below," it can refer to both the downward and upward directions relative to a single element.

[0023] Figure 1 This is a schematic cross-sectional view showing a vehicle lamp according to a first embodiment of the present invention. Figure 2 This is a schematic cross-sectional view showing the structure of the lighting module according to the first embodiment. Figure 3 It is shown Figure 1 A plan view of the substrate. Figure 4 It is shown Figure 1 A plan view of a variant of the substrate. Figure 5 This is a diagram illustrating the direction of light travel of the vehicle lamp according to the first embodiment.

[0024] refer to Figure 1 and Figure 2According to a first embodiment of the present invention, the vehicle lamp includes a base member 100, an illumination module 200 disposed on the base member 100, and a front lens 300 disposed on the illumination module 200. The illumination module 200 may be a device or module for surface illumination or surface emission.

[0025] The base member 100 supports the lighting module 200 while maintaining the external shape of the vehicle taillight. The base member 100 can be coupled to a lamp bracket mounted at the rear of the vehicle. For this purpose, a coupling structure can be formed in the base member 100 to couple to the vehicle's lamp or support the lighting module. Such a coupling structure can include, but is not limited to, coupling structures such as bolts or hooks. The base member 100 can include a straight portion 101 and a curved portion 103. The straight portion 101 and the curved portion 103 can be formed integrally, but for ease of description, they will each be described as two parts. The straight portion 101 can include an area overlapping at least one light source in the vertical direction. The curved portion 103 can include an area overlapping at least one light source in the vertical direction. The straight portion 101 can be formed facing the rear of the vehicle. The curved portion 103 can be formed facing the rear and rear-side of the vehicle. The base member 100 can be formed to surround the rear and rear-side of the vehicle. One side of the straight portion 101 may further include a sidewall portion for supporting the front lens 300, and the other side of the straight portion 101 may be connected to the curved portion 103. That is, the curved portion 103 may be a region that connects to or extends from the straight portion 101.

[0026] An illumination module 200 may be disposed on a base member 100. The illumination module 200 may emit light toward the rear and sides of the vehicle. The illumination module 200 is assembled into a shape suitable for the base member 100 and may emit light that satisfies the light distribution pattern of the rear and rear-side of the vehicle. According to an embodiment of the present invention, the illumination module 200 includes a substrate 210, a plurality of light sources 220 disposed on the substrate 210, a resin layer 230 disposed on the plurality of light sources 220, and a phosphor layer 240 disposed on the resin layer 230. The substrate 210 may include an insulating material or a conductive material. The substrate 210 may be formed of a rigid material or a flexible material. The substrate 210 may be formed of a plurality of substrates. The substrate 210 may include a first substrate 211 disposed on a straight portion 101 of the base member 100 and a second substrate 213 disposed on a curved portion 103 of the base member 100. When light emitted from the light source 220 is incident on the second substrate 213, the light can be emitted rearward through the second substrate 213.

[0027] like Figure 3As shown, the first substrate 211 can be formed of an opaque material. The first substrate 211 can be formed in the shape of a polygonal plate, but is not limited thereto. The second substrate 213 can be disposed on one side or the outside of the first substrate 211. The second substrate 213 can be electrically connected to the first substrate 211. The second substrate 213 may include a transparent material. Light generated from the light source 220 can be emitted towards the upper part of the first substrate 211 and the second substrate 213. Simultaneously, a portion of the light can be emitted towards the lower part of the second substrate 213. The widths of the first substrate 211 and the second substrate 213 can be the same or different from each other. Generally, since the rear width of a vehicle equipped with lights is formed to be greater than the lateral and rear widths, the width of the first substrate 211 can be greater than the width of the second substrate 213. In embodiments of the present invention, since the first substrate 211 is formed of an opaque material and the second substrate 213 is formed of a transparent material, there is a cost reduction effect compared to a substrate formed entirely of transparent material. This is because the cost of a substrate made of transparent material is generally higher than the cost of a substrate made of opaque material.

[0028] like Figure 4As shown, the first substrate 211 can be formed of an opaque material. The first substrate 211 can be formed in the shape of a polygonal plate, but is not limited thereto. The second substrate 213 can be disposed on one side or the outside of the first substrate 211. The second substrate 213 can be electrically connected to the first substrate 211. The second substrate 212 can include an opaque material. The second substrate 213 can be formed as a mesh structure including a plurality of holes H. The second substrate 213 can include a first substrate portion 213a and a second substrate portion 213b. The first substrate portion 213a can extend outward in a direction perpendicular to the side surface of the first substrate 211. The first substrate portion 213a can extend outward horizontally relative to the first substrate 211. The first substrate portion 213a can include a plurality of substrate portions. The plurality of first substrate portions 213a can be arranged parallel to each other, but the invention is not limited thereto. The second substrate portion 213b can be arranged in a direction parallel to the side surface of the first substrate 213a. The second substrate portion 213b can be formed with a structure connecting the plurality of first substrate portions 213a. Therefore, a plurality of holes H can be formed in the second substrate 213. A hole H can be formed through a first substrate portion 213a and a second substrate portion 213b. The first substrate portion 213a and the second substrate portion 213b can be disposed around the hole H. The upper surfaces of the first substrate portion 213a and the second substrate portion 213b can be disposed on the same plane as the upper surface of the first substrate 211. The hole H can have a polygonal shape, but this can be varied depending on the structure of the second substrate 213, i.e., the shape of the first substrate portion 213a and the second substrate portion 213b. The width w1 of the first substrate portion 213a can be smaller than the width w2 of the hole H. When the width w1 of the first substrate portion 213a is very large, most of the light emitted to the lower part of the second substrate 213 is blocked; therefore, it is effective to form the width w1 of the first substrate portion 213a as small as possible to increase the amount of light emitted to the lower part of the second substrate 213. The width of the second substrate portion 213b can correspond to the width of the first substrate portion 213a. Although the structure of the second substrate 213 can be formed in various ways, it is very effective to form the light source 220 into a grid structure so that the light source 220 can be arranged uniformly and the light can be distributed uniformly.

[0029] refer to Figure 1 and Figure 2The light source 220 can be disposed on the substrate 210. Regarding the light source 220, N light sources 220 can be disposed along the long axis (column) direction of the substrate 210, and M light sources 220 can be disposed along the short axis (row) direction of the substrate 210. The N light sources 220 disposed along the long axis direction of the substrate 210 can be formed with the same or different spacing distances between them. Each of N and M can be more than two light sources. Similarly, the M light sources 220 disposed along the short axis direction of the substrate 210 can be formed with the same or different spacing distances between them. The spacing distance between the light sources 220 can be appropriately designed to effectively realize a surface light source. The light source 220 can include a light-emitting device. The light source 220 can emit blue light, green light, red light, white light, infrared light, or ultraviolet light. The light source 220 according to embodiments of the present invention can emit blue light in the range of 420nm to 470nm with optimal light efficiency. The light source 220 can be an LED chip or a device encapsulating an LED chip. The light source 220 can be provided as a compound semiconductor. For example, the light source 220 can be provided as a group II-VI or group III-V compound semiconductor. For example, the light source 220 may include at least two elements selected from aluminum (Al), gallium (Ga), indium (In), phosphorus (P), arsenic (As), and nitrogen (N). The light source 220 may include a first conductivity semiconductor layer, an active layer, and a second conductivity semiconductor layer. The first conductivity semiconductor layer and the second conductivity semiconductor layer can be implemented using at least one group III-V or group II-VI compound semiconductor. For example, the first conductivity semiconductor layer and the second conductivity semiconductor layer may be made of In... x Al y Ga 1-x-y The active layer is formed using a semiconductor material with the composition N (0≤x≤1, 0≤y≤1, 0≤x+y≤1). For example, the first and second conductivity semiconductor layers may include at least one selected from the group consisting of GaN, AlN, AlGaN, InGaN, InN, InAlGaN, AlInN, AlGaAs, GaP, GaAs, GaAsP, and AlGaInP. The first conductivity semiconductor layer may be an n-type semiconductor layer doped with an n-type dopant (e.g., Si, Ge, Sn, Se, or Te). The second conductivity semiconductor layer may be a p-type semiconductor layer doped with a p-type dopant (e.g., Mg, Zn, Ca, Sr, or Ba). The active layer can be implemented using a compound semiconductor. For example, the active layer may be implemented as at least one of group III-V or group II-VI compound semiconductors. When the active layer is implemented as a multi-well structure, the active layer may include a plurality of alternating well layers and a plurality of barrier layers, and may have In x Al y Ga 1-x-yThe semiconductor material configuration is N (0≤x≤1, 0≤y≤1, 0≤x+y≤1). For example, the active layer may include at least one selected from the group consisting of InGaN / GaN, GaN / AlGaN, AlGaN / AlGaN, InGaN / AlGaN, InGaN / InGaN, AlGaAs / GaAs, InGaAs / GaAs, InGaP / GaP, AlInGaP / InGaP, and InP / GaAs.

[0030] The resin layer 230 is used to guide light emitted from the light source 220. The resin layer 230 may be made of a transparent resin material, such as a UV (ultraviolet) resin, silicone resin, or epoxy resin. The resin layer 230 may further include a diffusing agent (columnar or dispersant, not shown). The diffusing agent may have a spherical shape, and its size may be in the range of 4 μm to 6 μm. The shape and size of the diffusing agent are not limited thereto. The resin layer 230 may include a first resin portion 231 and a second resin portion 233. The first resin portion 231 may be disposed on the substrate 210 and the light source 220. The first resin portion 231 may be disposed on the upper surface of the first substrate portion 211 and may cover the upper surface and side surface of the light source 220 disposed on the first substrate portion 211. The upper surface of the first resin portion 231 may be parallel to the upper surface of the substrate 210. One side of the first resin portion 231 may be disposed in a vertical direction relative to the upper surface of the first resin portion 231. The second resin portion 233 may cover the second substrate 213. The second resin portion 233 can cover the upper surface and side surface of the light source 220 disposed on the second substrate 213. The second substrate 213 can be housed in the second resin portion 233. The second resin portion 233 can cover the upper part of the second substrate 213 and the light source 220. The second resin portion 233 can cover the lower part of the second substrate 213. The second resin portion 233 can cover the upper and lower regions of the second substrate 213. The outer side of the second resin portion 233 can extend further outward than the outer end of the second substrate 213. The upper surface or surface of the second resin portion 233 can include a curved surface. The upper surface of the second resin portion 233 can extend outward from one side of the first resin portion 231 as a curved or inclined surface. The distance from the upper surface or surface of the second resin portion 233 to the light source 220 can gradually decrease towards the edge or outer end of the upper surface or surface of the second resin portion 233. The curved surface of the second resin portion 233 can extend from the upper surface of the first resin portion 231 or the horizontal upper surface of the second resin portion 233 to the upper surface of the curved portion 103. The curved surface of the second resin part 233 may be a curved surface or a convex side surface protruding outward from the light source 220 disposed on the upper surface of the second substrate 213.

[0031] The lower surface of the second resin portion 233 may be formed along the upper surface of the base member 103. The lower surface of the second resin portion 233 may include a curved surface. The lower surface of the second resin portion 233 may be formed along the curved portion 103 or may contact the curved portion 103. The distance between the lower surface of the second resin portion 233 and the light source 220 may gradually increase towards the lower edge of the second resin portion 233. The width or gap between the upper surface and the lower surface of the second resin portion 233 may decrease towards the outer edge of the second resin portion 233. The second resin portion 233 may guide light emitted from the upper surface of the light source 220. Additionally, the second resin portion 233 may guide light emitted through the lower surface of the light source 220 or the second substrate 213.

[0032] A phosphor layer 240 may be formed on the resin layer 230. The phosphor layer 240 may be formed to cover the upper and side surfaces of the resin layer 230. The phosphor layer 240 may be disposed between the resin layer 230 and the front lens 300. The phosphor layer 240 may include a transparent material. The phosphor layer 240 may include a transparent insulating material. The phosphor layer 240 may be made of silicon material, or may be made of silicon material with different chemical bonds. Silicone resin is a polymer composed of inorganic silicon and organic carbon, and possesses physical properties such as the thermal stability, chemical stability, abrasion resistance, and gloss of inorganic materials, as well as the reactivity, solubility, elasticity, and processability characteristic of organic materials. Silicon may include ordinary silicon and fluorosilicone with an increased fluorine ratio. Increasing the fluorine ratio of fluorosilicone has the effect of improving moisture resistance. The phosphor layer 240 may include a wavelength conversion unit that receives light emitted from the light source 220 and provides wavelength-converted light. For example, the phosphor layer 240 may include at least one selected from the group consisting of phosphors and quantum dots. Phosphors or quantum dots can emit blue, green, or red light. The phosphors can be uniformly disposed within the phosphor layer 240. The phosphors can include fluoride phosphors, for example, at least one of MGF-based, KSF-based, or KTF-based phosphors. When the phosphor is a red phosphor, it can have a wavelength range of 610 nm to 650 nm, and the wavelength can have a width of less than 10 nm. The red phosphor can include fluoride-based phosphors. The phosphors can comprise 2 wt% to 20 wt% based on the weight of the phosphor layer 240. Therefore, the phosphor layer 240 can emit blue light emitted from the light source 220 in a second color of 590 nm to 610 nm. The second color can be orange. The phosphor layer 240 requires more than 35% phosphor to emit blue as a complete red, but in embodiments of the invention, due to the provision of a red front lens, the final color can be emitted as red even with a reduced phosphor content.

[0033] like Figure 2As shown, the height h1 of the resin layer 230 can be less than 5 mm, for example, 4 mm to 5 mm. When the height h1 of the resin layer 230 is less than 4 mm, surface uniformity may decrease. When the height h1 of the resin layer 230 exceeds 5 mm, the product size may increase. The height h2 of the phosphor layer 240 can be less than 1 mm, for example, 0.5 mm to 1 mm. When the height h2 of the phosphor layer 240 is less than 0.5 mm, light conversion may not be effective. When the height h2 of the phosphor layer 240 exceeds 1 mm, the product size may increase. The distance between the light sources 220 can be greater than 4 mm, for example, 4 mm to 7 mm. The distance between the light sources 220 can be greater than the height h1 of the resin layer 230. When the distance between the light sources 220 is less than 4 mm, hot spots may occur, and when the distance between the light sources 220 is less than or more than 7 mm, surface uniformity decreases.

[0034] The second resin portion 233 may include a first point P1, a second point P2, and a third point P3. The first point P1, the second point P2, and the third point P3 may be points on the curved surface of the second resin portion 233 where the second resin portion 233 and the phosphor layer 240 are in contact with each other. The light source 220 may include a first light source 220a. The first light source 220a may be a light source disposed closest to the side surface of the second resin portion 233. The first point P1 may be a region in contact with the second resin portion 233 in a horizontal direction from the center of the first light source 220a to the substrate 210. The third point P3 may be a region in contact with the second resin portion 233 along a straight line perpendicular to the substrate 210 from the center of the first light source 220a. The second point P2 may be any region of the second resin portion 233 between the first point P1 and the third point P3. The third distance L3 from the center of the first light source 220a to the third point P3 may be greater than the first distance L1 between the center of the first light source 220a and the first point P1, and the second distance L2 from the center of the first light source 220a to the second point P2. The second distance L2 from the center of the first light source 220a to the second point P2 can be greater than the first distance L1 from the center of the first light source 220a to the first point P1. Conventionally, since the distances between the center of the light source and the first, second, and third points are not optimized, a dark line is generated at the second point. In an embodiment of the present invention, by forming a curved surface of the second resin portion 233 to reduce the second distance L2 between the second point P2 and the center of the first light source 220a, the light efficiency at the second point P2 is improved.

[0035] The lighting module 200 according to an embodiment of the present invention has the effect of emitting light towards the rear of the vehicle and light towards the side-rear of the vehicle to conform to the light distribution law. For example... Figure 1As shown, the reflective member 400 may be further disposed on the curved portion 103 of the base member 100. The reflective member 400 may reflect light emitted to the lower part of the second substrate 213 to emit light toward the side and rear of the vehicle. That is, the reflective member 400 has the effect of further improving the light efficiency at the side and rear of the vehicle. The reflective member 400 may include a white material. The reflective member 400 may include a resin material. The reflective member 400 may include silicon, epoxy resin, etc. The reflective member 400 may include a reflective material, such as TiO2. The reflective member 400 may be provided in the form of a film. Alternatively, the reflective member 400 may be formed by deposition on the curved portion 103 of the base member 100. The curved portion 103 and the outer ends of the reflective member 400 may be spaced apart from the lower surface of the second substrate 213 to the greatest extent possible.

[0036] The front lens 300 can be used to illuminate light from the light source 220 by converging light in all directions or dispersing it in opposite directions. The front lens 300 can be a transmissive plate covering the upper and outer regions of the illumination module 200. The front lens 300 can be a red lens. The front lens 300 is formed in red such that light emitted from the illumination module 200 can emit red light with a wavelength of 620 nm to 630 nm. One and the other sides of the front lens 300 can be coupled to the base member 100. The front lens 300 can be formed in a shape corresponding to the taillights of a vehicle. The front lens 300 can include an inner lens or an outer lens. Multiple front lenses 300 can be formed.

[0037] In the following text, reference will be made to Figure 5 Provide a detailed description of the optical path. (See reference) Figure 5The light source 220 disposed on the substrate 210 can emit a first light R1 of a first color with a wavelength range of 420 nm to 470 nm. Here, the first color can be blue light. The first light R1 can be incident on the resin layer 230. The first light R1 can be converted from a point light source to a surface light source through the resin layer 230. Since the second substrate 213 is formed of a transparent material or a mesh structure, the first light R1 can be reflected to the lower part of the second substrate 213. The first light R1 reflected downward from the second substrate 213 can be reflected by the reflective member 400 to be incident on the side surface of the second resin portion 233. The first light R1 can be incident on the phosphor layer 240. The phosphor layer 240 can convert the first light R1 into a second light R2 through a wavelength conversion unit, such as a phosphor. Here, since the concentration of phosphor contained in the phosphor layer 240 is small, the phosphor layer 240 can emit a portion of the first light R1 that has not undergone light conversion. Here, the first light R1 can be less than 3% of the total light. Therefore, the phosphor layer 240 can emit light of a second color in the wavelength range of 590 nm to 610 nm. Additionally, the phosphor layer 240 can act as a diffuser in the process of converting the first light R1 into the second light R2. The first light R1 and the second light R2 emitted from the phosphor layer 240 can be incident on the front lens 300. At this time, since the front lens 300 is formed in red, the first light R1 is absorbed and disappears. Therefore, the first light R1 is removed from the front lens 300, and only the second light R2 remains, so a third light R3 of a third color in the wavelength range of 620 nm to 630 nm can be emitted from the exit surface of the front lens 300.

[0038] According to an embodiment of the present invention, the lighting device can emit light from the rear in accordance with the light distribution law by horizontally arranging the substrate 210. At the same time, by forming the second substrate 213 with a transparent material or a mesh structure, the efficiency of the light emitted from the side and rear of the vehicle can be improved.

[0039] Figure 6 This is a schematic cross-sectional view showing a vehicle lamp according to a second embodiment of the present invention. Figure 7 This is a diagram illustrating the light propagation direction of the vehicle lamp according to the second embodiment.

[0040] refer to Figure 6According to a second embodiment of the present invention, a vehicle lamp includes: a base member 100; an illumination device, such as an illumination module 200, disposed on the base member 100; a front lens 300 disposed on the illumination module 200; and a reflective member 400 disposed on the base member. Here, the configuration, except for the illumination module 200, is the same as that of the vehicle lamp according to the first embodiment, and will therefore be briefly described. The base member 100 may include a straight portion 101 and a curved portion 103. The straight portion 101 may be formed facing the rear of the vehicle. The curved portion 103 may be formed facing the rear and rear-side of the vehicle. One side of the straight portion 101 may further include a sidewall portion for supporting the front lens 300. The illumination module 200 may be disposed on the base member 100. The illumination module 200 may emit light facing the rear and sides of the vehicle. The illumination module 200 is assembled into a shape suitable for the base member 100 and may emit light that satisfies the light distribution pattern of the rear and rear-side of the vehicle. A reflective member 400 may be disposed on the curved portion 103 of the base member 100. The reflective member 400 may reflect light emitted toward the lower portion of the second substrate 213 to emit light toward the rear side of the vehicle. The front lens 300 may be used to illuminate light emitted from the light source 220 by converging and illuminating it in a forward direction or by dispersing it in the opposite direction. The front lens 300 may be a red lens. The front lens 300 may include an inner lens or an outer lens.

[0041] On the other hand, the lighting module according to the second embodiment may include a substrate 210, a plurality of light sources 220 disposed on the substrate 210, a resin layer 230 disposed on the light sources 220, and a phosphor layer 240 disposed on the resin layer 230. The substrate 210 may include a first substrate 211 disposed on the straight portion 101 of the base member 100 and a second substrate 213 disposed on the curved portion 103 of the base member 100. The second substrate 213 may be configured to emit light emitted from the light sources 220 to the lower portion of the second substrate 213. The first substrate and the second substrate may be coupled with... Figure 3 and Figure 4 The same structure can be formed as described above, and can be selectively applied to the second embodiment.

[0042] A light source 220 may be disposed on a substrate 210. The light source 220 may include a light-emitting device. The light source 220 may emit blue light in the range of 420 nm to 470 nm with optimal light efficiency. A light source 200 may include multiple light sources 220 disposed on a first substrate 211 and a second substrate 213. A light source 220 may include a second light source 221 disposed below the second substrate 213. The second light source 221 may include multiple light sources. The second light source 221 may emit light to the lower part of the second substrate 213. The light emitted to the lower part of the second substrate 213 may be reflected by a reflective member 400 and emitted to the side surface of the second resin portion 233. A resin layer 230 may include a first resin portion 231 and a second resin portion 233. The first resin portion 231 may be disposed on the substrate 210 and the light source 220. The first resin portion 231 may be formed to cover the upper and side surfaces of the multiple light sources 220. The second resin portion 233 may house the second substrate 213, the multiple light sources 220, and the second light source 221. The second resin portion 233 can be configured to cover the upper portion of the second substrate 213 and the light source 220, and the lower portion of the second substrate 213 and the second light source 221. A phosphor layer 240 can be formed on the resin layer 230. The phosphor layer 240 can be formed to cover the upper and side surfaces of the resin layer 230. The phosphor layer 240 can be disposed between the resin layer 230 and the front lens 300. The phosphor layer 240 may include a phosphor. The phosphor may include 2 wt% to 20 wt% based on the weight of the phosphor layer 240. These configurations can be selectively applied according to the configuration of the first embodiment.

[0043] like Figure 7 As shown, the light emitted by the light source mounted on the substrate can interact with... Figure 5 The flow of light in them is the same. For example... Figure 7As shown, the light emitted from the second light source 221 may include a first light R1. The first light R1 is incident on the second resin portion 233 and travels toward the reflective member 400. The first light R1 reaching the reflective member 400 is reflected by the reflective member 400 and emitted onto the side surface of the second resin portion 233. In this case, a portion of the first light R1 may be reflected toward the upper part of the second substrate 213. The first light R1 reflected laterally by the second resin portion 233 can be converted into a second light R2 by the phosphor layer 240. A portion of the first light R1 may pass through the phosphor layer 240. Since the phosphor 240 content is approximately 2wt% to 20wt%, a portion of the first light R1 may not be converted. The first light R1 passing through the phosphor layer 240 can be absorbed by the red front lens 300, and the front lens 300 can emit a third light R3 of a third color. These configurations can be selectively applied according to the configuration of the first embodiment. According to an embodiment of the present invention, by further providing a plurality of second light sources 221 on the rear surface of the second substrate 213, the light efficiency at the rear and sides of the vehicle is further improved.

Claims

1. A lighting device, comprising: A base member, the base member comprising a straight portion and a curved portion that bends from one end of the straight portion and has a curvature; The substrate includes a first substrate disposed on the straight portion of the base member and a second substrate disposed parallel to the first substrate and spaced apart from the curved portion of the base member; Multiple light sources are disposed on the upper surface of the substrate; A resin layer disposed on the upper surface of the substrate; as well as A phosphor layer is disposed on the resin layer. The resin layer includes a first resin portion at the same height as the first substrate and a second resin portion disposed on the curved portion of the base member, wherein the upper surface of the second resin portion includes a curved surface. The second resin portion covers the upper and lower regions of the second substrate. The plurality of light sources are disposed in the first resin portion and the second resin portion of the resin layer.

2. The lighting device according to claim 1, in, The height of the second resin portion in the vertical direction is less than the height of the first resin portion in the vertical direction.

3. The lighting device according to any one of claims 1 to 2, in, The upper surface of the first resin portion is parallel to the upper surface of the first substrate.

4. The lighting device according to any one of claims 1 to 2, in, The phosphor layer has a curved portion on the second resin portion.

5. The lighting device according to any one of claims 1 to 2, in, The second substrate of the substrate is arranged horizontally with the first substrate, and At least two light sources are disposed on each of the first substrate and the second substrate.

6. The lighting device according to claim 5, in, The vertical distance between the light source disposed on the first substrate and the phosphor layer is greater than the vertical distance between the light source disposed on the second substrate and the phosphor layer.

7. The lighting device according to any one of claims 1 to 2, in, The lower portion of the second resin portion extends to the lower surface of the substrate, and The lower part of the second resin portion is connected to the upper part of the second resin portion.

8. The lighting device according to claim 7, in, The outer part of the second resin portion is located at a position further outward than the side surface of the substrate.

9. The lighting device according to claim 7, in, The phosphor layer extends to the surface of the lower portion of the second resin portion.

10. The lighting device according to any one of claims 1 to 2, in, The multiple light sources emit first light in the range of 420nm to 470nm. The phosphor layer converts a portion of the first light into a second light in the range of 590 nm to 610 nm. The first light and the second light are emitted as a third light in the range of 620nm to 630nm through a front lens disposed on the phosphor layer.

11. A vehicle light, comprising: Lighting module; as well as The red lens is mounted on the lighting module. The lighting module is the lighting device according to any one of claims 1 to 2.

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