# US 11,079,074 B2 · Lighting device and vehicular lamp comprising same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,079,074 B2 - Document ID: US11079074B2 - Status: Granted - Kind: B2 - Application number: 15/780,766 - Filed: 2016-12-02 - Published: 2020-07-30 - Granted: 2021-08-03 - Earliest claimed: 2015-12-02 - Assignees: LG Innotek Co., Ltd. - Applicants: LG Innotek Co., Ltd. - Inventors: Jin Gwan Shin; Jin Hee Kim; Jae Yun Choi - Web page: https://patentgrep.com/patent/US11079074B2 ## CPC - F21K 9/61: using light guides - B60Q 1/02: the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments - B60Q 1/26: the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic - F21S 41/141: Light emitting diodes [LED] - F21S 41/24: Light guides - F21S 41/285: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805} - F21S 41/37: characterised by their material, surface treatment or coatings - F21S 41/40: characterised by screens, non-reflecting members, light-shielding members or fixed shades - F21S 43/14: Light emitting diodes [LED] - F21S 43/239: plate-shaped - F21S 43/245: emitting light from one or more of its major surfaces - F21S 43/246: {having two or more output branches} - F21S 43/26: {Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255} - F21S 43/2605: {Refractors} - F21S 43/28135: {Structures encapsulating the light source} - F21S 43/33: characterised by their material, surface treatment or coatings - F21V 7/28: characterised by coatings - G02B 6/0023: {provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source} - G02B 6/0025: {Diffusing sheet or layer; Prismatic sheet or layer} - G02B 6/0028: {Light guide, e.g. taper} - G02B 6/0031: {Reflecting element, sheet or layer} - G02B 6/0043: {provided on the surface of the light guide} - G02B 6/0055: {Reflecting element, sheet or layer} - G02B 6/0058: {varying in density, size, shape or depth along the light guide} - G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources} - G02B 6/0091: {of the light source relative to the light guide (G02B6/0021 takes precedence)} - F21K: NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR - B60Q: ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract The present disclosure relates to a lighting device and a vehicular lamp including the same. A lens member is provided between a shielding module and a light guide member. Through a non-air-gap structure in which a separation portion between components is removed, diversity of mechanism designs may be secured, and at the same time, light efficiency may be improved. A light emitting direction of a light emitting element forms an inclination angle with a light emitting surface of a light source module, so that a deterioration phenomenon of a light guide member formed of resin may be removed, and a light beam emitted through a first light guide member is emitted as an indirect light beam. ## Claims ### Claim 1 A lighting device comprising: a shielding module including an opening area in an upper portion of the shielding module and a shielding area extending from the opening area, and including a lower surface portion, side surface portions extending upward from the lower surface portion, and bent portions bent from the side surface portions and defining the opening area; light source modules arranged between the lower surface portion and the bent portions of the shielding module; a first light guide member arranged on light emitting surfaces of the light source modules inside the shielding module; and a lens arranged on the first light guide member such that a lower surface of the lens is in contact with an upper surface of the first light guide member and a part of an upper surface of the lens is in contact with inner surfaces of the bent portions, wherein light emitting directions of light emitting elements inside the light source modules form an inclination angle with the light emitting surfaces of the light source modules, the inclination angle being defined as an angle between virtual vertical lines W2 passing through centers of the light emitting elements and virtual extending lines W1 of the light emitting surfaces of the light source modules, wherein a length of each bent portion is longer than a transverse width of each light source module, wherein a transverse width of the lens is longer than a transverse width of the first light guide member, and the transverse width of the lens is longer than a transverse width of the opening area, wherein the lighting device comprises a central region within imaginary vertical lines extending downwardly, in a vertical direction parallel to the side surface portions of the shielding member, from a perimeter of the opening area of the shielding module towards the lower surface portion of the shielding module, the central region having at least a portion of the first light guide member and at least a portion of the lens disposed therein, and wherein the light source modules are disposed entirely below the bent portions, and the light source modules are absent from the central region of the lighting device. ### Claim 2 (depends on 1) The lighting device of claim 1, wherein each of the light source modules includes: a light source including a light emitting element; a printed circuit board on which the one or more light sources are mounted; a second light guide member arranged on the printed circuit board; and a diffusive member arranged on the second light guide member. ### Claim 3 (depends on 2) The lighting device of claim 2, wherein the second light guide member includes a plurality of beads therein. ### Claim 4 (depends on 3) The lighting device of claim 3, wherein a content of the beads ranges from 0.01% to 0.3% with respect to an entire weight of the lighting device. ### Claim 5 (depends on 2) The lighting device of claim 2, wherein each of the light source modules includes an optical pattern disposed between the printed circuit board and the second light guide member. ### Claim 6 (depends on 1) The lighting device of claim 1, wherein the inclination angle ranges from 90 degrees to 180 degrees. ### Claim 7 (depends on 6) The lighting device of claim 6, wherein the light source modules are disposed adjacent to insides of the side surface portions of the shielding module to be opposite to each other. ### Claim 8 (depends on 7) The lighting device of claim 7, wherein the first light guide member is disposed between the light source modules disposed opposite to each other. ### Claim 9 (depends on 1) The lighting device of claim 1, wherein first areas of the bent portions of the shielding module vertically overlap with the lens and the first light guide member. ### Claim 10 (depends on 9) The lighting device of claim 9, wherein end side surfaces of the bent portions vertically overlap with the first light guide member. ### Claim 11 (depends on 9) The lighting device of claim 9, comprising: a reflective member disposed between the first light guide member and the lower surface portion, wherein the reflective member is disposed between side surfaces of the first light guide member, a lower surface of the lens module, and the lower surface portion. ### Claim 12 (depends on 1) The lighting device of claim 1, wherein second areas of the bent portions of the shielding module vertically overlap with the lens and the light source modules. ### Claim 13 (depends on 1) The lighting device of claim 1, wherein side surfaces of the lens are in contact with the side surface portions. ### Claim 14 (depends on 1) The lighting device of claim 1, wherein the shielding module is formed of a reflective material including any one of Al, PC, PP, ABS, and PBT. ### Claim 15 (depends on 1) The lighting device of claim 1, wherein the light guide member is a photocurable type resin layer or a thermosetting type resin layer. ### Claim 16 A lighting device comprising: a shielding module including an opening area in an upper portion of the shielding module and a shielding area extending from the opening area, and including a lower surface portion, side surface portions extending upward from the lower surface portion, and bent portions bent from the side surface portions and defining the opening area; light source modules arranged between the lower surface portion and the bent portions of the shielding module; a first light guide member arranged on light emitting surfaces of the light source modules inside the shielding module; and a lens module arranged on the first light guide member such that a lower surface of the lens module is in contact with an upper surface of the first light guide member and a part of an upper surface of the lens module is in contact with inner surfaces of the bent portions, wherein light emitting directions of light emitting elements inside the light source modules form an inclination angle with the light emitting surfaces of the light source modules, the inclination angle being defined as an angle between virtual vertical lines W2 passing through centers of the light emitting elements and virtual extending lines W1 of the light emitting surfaces of the light source modules, wherein each of the light source modules includes: a light source including a light emitting element; a printed circuit board on which the one or more light sources are mounted; a second light guide member arranged on the printed circuit board; and a diffusive member arranged on the second light guide member, and wherein an optical pattern is disposed between transparent optical sheets between the second light guide member and the diffusive member. ### Claim 17 (depends on 16) The lighting device of claim 16, wherein the optical pattern has lower pattern density as the optical pattern becomes further away from a light emitting direction of the light emitting element. ### Claim 18 (depends on 17) The lighting device of claim 17, wherein the optical pattern includes an overlapping printing structure. ### Claim 19 (depends on 18) The lighting device of claim 18, wherein the optical pattern includes a diffusive pattern formed using light shielding ink including one or more materials selected from TiO2, CaCO3, BaSO4, Al2O3, and silicon and a light shielding pattern formed using light shielding ink including Al or a mixture of Al and TiO2. ### Claim 20 A vehicular lamp comprising a lighting device including: a shielding module including an opening area thereon and a shielding area extending from the opening area, the shielding module including a lower surface portion, side surface portions extending upward from the lower surface portion, and bent portions bent from the side surface portions and defining the opening area; a light source module disposed inside the shielding module and including a second light guide member in which a light emitting element is embedded; a first light guide member disposed inside the shielding module and being in contact with a light emitting surface of the light source module; and a lens arranged on the first light guide member such that a lower surface of the lens is in contact with an upper surface of the first light guide member, wherein an inclination angle is formed between a light emitting direction of the light emitting element and the light emitting surface of the light source module, wherein a length of each bent portion is longer than a transverse width of the light source module, wherein a transverse width of the lens is longer than a transverse width of the first light guide member, and the transverse width of the lens is longer than a transverse width of the opening area, wherein the lighting device comprises a central region within imaginary vertical lines extending downwardly, in a vertical direction parallel to the side surface portions of the shielding member, from a perimeter of the opening area of the shielding module towards the lower surface portion of the shielding module, the central region having at least a portion of the first light guide member and at least a portion of the lens disposed therein, and wherein the light source module is disposed entirely below the bent portions, and the light source module is absent from the central region of the lighting device.