CN110056832B - Lighting device for vehicle - Google Patents

Lighting device for vehicle Download PDF

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Publication number
CN110056832B
CN110056832B CN201910002824.5A CN201910002824A CN110056832B CN 110056832 B CN110056832 B CN 110056832B CN 201910002824 A CN201910002824 A CN 201910002824A CN 110056832 B CN110056832 B CN 110056832B
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CN
China
Prior art keywords
guide plate
light guide
light
emitting diode
light emitting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910002824.5A
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Chinese (zh)
Other versions
CN110056832A (en
Inventor
金泰光
宋荣俊
金来炫
孙渊喆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seoul Semiconductor Co Ltd
Original Assignee
Seoul Semiconductor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seoul Semiconductor Co Ltd filed Critical Seoul Semiconductor Co Ltd
Priority claimed from CN201510779472.6A external-priority patent/CN106016118B/en
Publication of CN110056832A publication Critical patent/CN110056832A/en
Application granted granted Critical
Publication of CN110056832B publication Critical patent/CN110056832B/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B60Q1/0058—Stacked, i.e. one lamp located behind the other in the optical axis direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect
    • F21S10/02—Lighting devices or systems producing a varying lighting effect changing colors
    • F21S10/023—Lighting devices or systems producing a varying lighting effect changing colors by selectively switching fixed light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S2/00—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction
    • F21S2/005—Systems of lighting devices, not provided for in main groups F21S4/00 - F21S10/00 or F21S19/00, e.g. of modular construction of modular construction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/247—Light guides with a single light source being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
    • G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/002—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces
    • G02B6/0021—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it by shaping at least a portion of the light guide, e.g. with collimating, focussing or diverging surfaces for housing at least a part of the light source, e.g. by forming holes or recesses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Planar Illumination Modules (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

Disclosed herein is a lighting device of a vehicle, including: a light emitting diode emitting light; and a light guide plate having a side surface on which light emitted from the light emitting diode module is incident, and emitting the light incident on the side surface to upwardly perform surface emission, wherein the light guide plate has a planar shape including at least one concave portion, and the light emitting diode module is mounted in the at least one concave portion. According to an exemplary embodiment of the present invention, when the light guide plate for performing surface emission used in the lighting device installed at the rear of the vehicle is formed in the shape of a horseshoe or a ring, the light emitting diode module may be installed at a concave position of the horseshoe shape, or the light emitting diode module may be installed along the inside of the ring shape, thereby uniformly performing surface emission through the entire light guide plate.

Description

Lighting device for vehicle
This application is a divisional application of an invention patent application "lighting device for vehicle" filed on 2015, 11/13/No. 201510779472.6.
Technical Field
The present invention relates to a lighting device for a vehicle, and more particularly, to a lighting device for a vehicle using a light guide plate, which is mounted at the rear of the vehicle.
Background
As a lighting device of a vehicle, various lighting devices such as a headlamp, a brake lamp, a turn signal lamp, and a tail lamp are provided. Existing lighting devices use primarily incandescent lamps. Recently, incandescent lamps tend to be replaced by Light Emitting Diodes (LEDs).
Fig. 1 is a view showing a conventional lighting device mounted at a rear portion of a vehicle using light emitting diodes.
Referring to fig. 1, the conventional lighting device uses a plurality of light emitting diodes installed in a direct type to perform lighting. For this, a printed circuit board is mounted to correspond to an area where light is to be emitted, and a plurality of light emitting diodes are mounted on the printed circuit board at predetermined intervals. Therefore, when the lighting device emits light, the plurality of light emitting diodes are configured to emit light.
As described above, the lighting device in which the plurality of light emitting diodes are mounted in the direct type does not perform surface emission, and thus when an area to which light is to be emitted is widened, the number of light emitting diodes to be mounted needs to be increased as much as the widened area. Further, as described above, when the light emitting diode is mounted in the following formula, a spot phenomenon (spotophenon) may be generated at a position where the light emitting diode is mounted.
Fig. 2 is a view showing another existing lighting device installed at the rear of a vehicle using light emitting diodes.
As described, in order to improve the direct illumination apparatus shown in fig. 1, as shown in fig. 2, light emitted from the light emitting diodes is diffused to the light guide plate to perform surface emission in a state where the light emitting diodes are mounted at one side of the light guide plate. Japanese patent publication No. 2014-149995 (car lamp, published 8/21 2014, hereinafter, referred to as citation) discloses the above-described configuration.
However, if the led module is mounted on one side of the light guide plate as disclosed in the cited document, even if the vehicle lamp is configured to enable the light emitted from the leds to perform surface emission in the light guide plate, the light intensity becomes weak as the light is distant from the leds, so that the surface emission efficiency may suddenly decrease at a position distant from the position where the leds are mounted.
That is, all light emitted from the light emitting diodes mounted at one side of the light guide plate does not reach the other side (the opposite side of the light guide plate), so that the surface emission efficiency may be reduced at the other side of the light guide plate.
[ Prior art documents ]
[ patent document ]
Japanese patent laid-open No. 2014-149995 (21/8/2014)
Disclosure of Invention
An object of the present invention is to provide a lighting device for a vehicle capable of uniformly performing surface emission through the entire light guide plate using light emitting diodes in the lighting device for a vehicle.
According to an exemplary embodiment of the present invention, there is provided a lighting device of a vehicle, including: a light emitting diode emitting light; and a light guide plate having a side surface on which light emitted from the light emitting diode module is incident and emitting the light incident on the side surface to upwardly perform surface emission, wherein the light guide plate has a planar shape including at least one concave portion and a convex portion, and the light emitting diode module is mounted in the concave portion and/or the convex portion.
According to another exemplary embodiment of the present invention, there is provided a lighting device of a vehicle, including: a light emitting diode emitting light; and a light guide plate having a side surface on which light emitted from the light emitting diode module is incident, and emitting the light incident on the side surface to upwardly perform surface emission, wherein a planar shape of the light guide plate is formed in a ring shape, and the light emitting diode module is mounted along an inner side of the ring shape.
The light emitting diode module may include: at least one light emitting diode emitting light; a Printed Circuit Board (PCB) on which the at least one light emitting diode is mounted. The printed circuit board may be a Flexible Printed Circuit Board (FPCB).
The planar shape of the light guide plate may be formed in the shape of a horseshoe having a predetermined width.
The light emitting diode modules may be provided in plural, and one of the plurality of light emitting diode modules may be installed at a concave portion of the horseshoe shape, and the remaining light emitting diode modules may be installed at an end of the horseshoe shape.
At least a part of the light guide plate may be formed in a shape bent at a predetermined angle with respect to the planar plane.
The lighting device of the vehicle may further include: and a cover member positioned above the light guide plate and transmitting light emitted from the light guide plate, and an upper portion of the light guide plate may protrude in a shape of a convex lens.
The side surface shape of the light guide plate may be formed in a square shape having a predetermined thickness. The side shape of the light guide plate may have a predetermined thickness and be provided with at least one curvature.
The shape of the side surface of the light guide plate may have a predetermined thickness and the upper surface of the light guide plate may be formed convexly or concavely.
The light emitting diode modules may be provided in at least two, the light guide plate may be provided in at least two, and each of the at least two light guide plates may be provided with each of the light emitting diodes.
The at least two light emitting diode modules may be mounted on a side of the side of each of the at least two light guide plates having a relatively long length.
The light guide plate may include at least one pattern part to upwardly emit light incident on a side surface thereof.
The pattern part may include: a line pattern formed inside the light guide plate and having a length along one direction; and a dot pattern formed inside the light guide plate and in the shape of a pentahedron.
The dot pattern may have a planar shape formed in a square shape, two sides facing each other formed in a triangular shape, and the other two sides facing each other formed in a trapezoidal shape.
The dot pattern may have a planar shape formed in a square shape and four sides formed in a triangular shape.
The light guide plate may have at least one upper pattern formed on an upper surface thereof, and the upper pattern may have a plurality of protrusions having a length along one direction and formed on the upper surface of the light guide plate, or the upper pattern may have a plurality of grooves having a length along one direction and formed on the upper surface of the light guide plate.
According to still another exemplary embodiment of the present invention, there is provided a lighting device of a vehicle, including: a tail lamp installed at a rear portion of the vehicle and emitting red light; and a brake lamp installed at a rear portion of the vehicle and emitting red light when a brake of the vehicle is driven, wherein the tail lamp includes: a first light emitting diode module emitting light; a first light guide plate having a side surface on which light emitted from the first light emitting diode module is incident, and emitting the light incident on the side surface to upwardly perform surface emission, a planar shape of the first light guide plate including at least one concave portion in which the at least one first light emitting diode module is mounted.
At least a portion of the first light guide plate may be formed in a shape bent at a predetermined angle with respect to the planar plane.
The stop lamp may include at least one second light emitting diode module that emits light. The stop lamp may further include a second light guide plate having a side surface on which light emitted from the at least one second light emitting diode module is incident, and emitting the light incident on the side surface to upwardly perform surface emission.
The second light guide plate may be formed in a shape bent at a predetermined angle with respect to the planar plane.
Drawings
Fig. 1 is a diagram illustrating a conventional lighting device of a vehicle.
Fig. 2 is a diagram showing another conventional lighting device for a vehicle.
Fig. 3 is a diagram showing a lighting device of a vehicle according to a first exemplary embodiment of the present invention.
Fig. 4 is a sectional view showing a lighting device of a vehicle according to a first exemplary embodiment of the present invention.
Fig. 5 is a sectional view showing a lighting device of a vehicle according to a second exemplary embodiment of the present invention.
Fig. 6 is a diagram showing a lighting device of a vehicle according to a third exemplary embodiment of the present invention.
Fig. 7 is a diagram showing the configuration of a tail lamp and a stop lamp of a lighting device of a vehicle according to a fourth exemplary embodiment of the present invention.
Fig. 8 is a diagram showing the configuration of a tail lamp and a stop lamp of a lighting device of a vehicle according to a fifth exemplary embodiment of the present invention.
Fig. 9 is a diagram showing the configuration of a tail lamp and a stop lamp of a lighting device of a vehicle according to a sixth exemplary embodiment of the present invention.
Fig. 10 is a diagram showing a lighting device of a vehicle according to a seventh exemplary embodiment of the present invention.
Fig. 11 is a diagram showing a lighting device of a vehicle according to an eighth exemplary embodiment of the present invention.
Fig. 12 is a diagram showing a lighting device of a vehicle according to a ninth exemplary embodiment of the present invention.
Fig. 13A and 13B are diagrams illustrating a light guide plate included in a lighting device of a vehicle according to an exemplary embodiment of the present invention.
Fig. 14 is a view illustrating a light guide plate included in a lighting device of a vehicle according to another exemplary embodiment of the present invention.
Fig. 15A to 15G are diagrams illustrating an example of a dot pattern shape of a pattern portion formed inside a light guide plate of a lighting device of a vehicle according to an exemplary embodiment of the present invention.
Fig. 16A to 16D are diagrams illustrating simulation results of a lighting device of a vehicle according to an exemplary embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 3 is a diagram illustrating a lighting device of a vehicle according to a first exemplary embodiment of the present invention, and fig. 4 is a sectional view illustrating the lighting device of the vehicle according to the first exemplary embodiment of the present invention.
Referring to fig. 3 and 4, the lighting device 100 of the vehicle according to the exemplary embodiment of the present invention includes a light emitting diode module 120, a light guide plate 110, and a cover member 130.
The light emitting diode module 120 includes a Light Emitting Diode (LED)122 emitting light and a printed circuit board 124 mounted with the LED 122.
Although not separately shown, the light emitting diode 122 may include: a housing; a lead frame combined with the housing; a light emitting diode chip mounted on the lead frame; and a molding part covering the light emitting diode chip. In addition, the molding part may have a phosphor included therein. The case configuring the package body may be manufactured by injection molding of plastic resin such as PA and PPA, and may be molded in a form that the case supports the lead frame by an injection molding process. Further, the housing may be provided with a cavity in which the light emitting diode chip is mounted, which may define a light emitting area of the light emitting diode 122.
Further, the lead frame is provided to supply external power to the light emitting diode chip, and the lead frame exposed to the outside of the case is electrically connected to the printed circuit board 124. The molding part may be formed to cover the light emitting diode chip and may be formed to fill the cavity with a molding resin including a phosphor. In this case, the molding portion may fill the cavity of the housing and may have an upper surface formed with a substantially flat surface or a convexly or concavely curved surface.
In addition, if necessary, a light emitting diode chip formed with a conformal phosphor coating layer may be mounted on the case. That is, a conformal coating of phosphor may be applied over the light emitting diode chips, and the light emitting diode chips with the phosphor coating may be mounted on the housing. The light emitting diode chip having the conformal coating layer may be molded of a transparent resin.
The printed circuit board 124 may have an upper surface provided with a pattern of conductive pads for bonding the lead frame of the light emitting diode 122. In addition, the upper surface of the printed circuit board 124 may be provided with a reflective layer. A metal core pcb (mcpcb) based on metal having good thermal conductivity may be used as the printed circuit board 124. Further, according to the first exemplary embodiment of the present invention, a flexible printed circuit board 124 may be used as the printed circuit board 124. The light emitting diodes 122 are mounted on the flexible printed circuit board 124 so that the light emitting diode module 120 can be freely mounted on the mounting surface of the light guide plate 110 having various shapes when the light emitting diode module 120 is mounted on the light guide plate 110.
The light guide plate 110 has light emitted from the light emitting diode module 120 incident thereon, and reflects incident light to be emitted to a light emitting surface. As shown in fig. 4, according to the first exemplary embodiment of the present invention, the light emitting diode module 120 may be mounted on a side surface of the light guide plate 110, and the light guide plate 110 may have a pattern part 112 disposed at a lower part thereof to emit light incident on the side upward. The pattern part 112 will be described below. First, the shape of the light guide plate 110 will be described.
According to the first exemplary embodiment of the present invention, the light guide plate 110 is formed in a shape whose planar shape includes at least one concave portion. The light guide plate 110 is formed to correspond to the shape of a tail lamp installed at the rear of a vehicle. According to an exemplary embodiment of the present invention, the side shape of the light guide plate may be formed in a square shape having a predetermined thickness. According to the first exemplary embodiment of the present invention, the planar shape of the light guide plate 110 includes a portion at least a part of which is concavely formed. Further, as described above, a convex shape is formed at a position corresponding to the concave shape or another position. Therefore, an example in which the planar shape of the light guide plate 110 is formed in a shape of a horseshoe such as a "U" letter as shown in fig. 3 will be described, and the shape of the light guide plate 110 may be changed into various shapes as necessary.
The first exemplary embodiment of the present invention describes that the planar shape of the light guide plate 110 is formed in the shape of a horseshoe, but as described above, the light guide plate 110 may be formed in a shape in which the light guide plate 110 has at least one concave portion. That is, the shape including the at least one concave portion may be a horseshoe shape, a shape in which the horseshoe shape is continuous, and a ring shape. The shape of the ring is a circular shape similar to a circle (a shape similar to a doughnut or a ring shape) in which a space is formed at the center.
The light emitting diode module 120 may be installed inside or outside the light guide plate 110 formed in a ring shape to irradiate light in an external direction of the light guide plate 110. That is, the light emitting diode module 120 may be mounted on a side surface of the light guide plate 110, and may be mounted in an inner side of the light guide plate 110 having a shape in which a planar shape is a ring shape, so as to irradiate light to the light guide plate 110.
As shown in fig. 4, the pattern parts 112 are located inside the light guide plate 110 and may be disposed at predetermined intervals, or may be disposed while having different disposed intervals according to the surface emission pattern in the light guide plate 110. According to the first exemplary embodiment of the present invention, the pattern part 112 is disposed inside the light guide plate 110 to reflect incident light toward the upper portion of the light guide plate 110.
The cover member 130 may be disposed above the light guide plate 110, and may serve to refract light emitted through the light guide plate 110. According to the first exemplary embodiment of the present invention, the shape of the cover member 130 is not particularly limited, but the cover member 130 may be formed with a pattern such that light emitted from the surface may be partially collected in the cover member 130.
Describing the relationship between each component of the lighting device of the vehicle according to the exemplary embodiment of the present invention including the above-described configuration, the light emitting diode module 120 is formed at one side of the light guide plate 110. As shown in fig. 3, the light emitting diode module 120 is mounted in concave portions in several sides of the light guide plate 110.
The tail lamp of the vehicle is used to inform a position, a width, and the like corresponding to the vehicle during the daytime or at night. Here, the tail lamp installed at the rear of the vehicle emits light weaker than the light of the brake, so that the tail lamp is distinguished from the brake lamp. That is, although the tail lamp emits light weaker than that of the stop lamp, the tail lamp continuously emits light, so that it is important to emit light widely and uniformly in an area where light is to be emitted.
To this end, according to the first exemplary embodiment of the present invention, the light emitting diode module 120 is mounted in at least one concave portion of the light guide plate 110. Although the first exemplary embodiment of the present invention describes that the light emitting diode module 120 is mounted in the concave portion, the light emitting diode module 120 may be mounted in the convex portion corresponding to the concave portion, or may be mounted in both the concave portion and the convex portion, as necessary. In this case, the concave portion means a position concavely formed inside the horseshoe-shaped light guide plate 110, and the convex portion means a position convexly formed outside the horseshoe-shaped light guide plate 110. In other words, although the first exemplary embodiment of the present invention describes the light guide plate 110 in a horseshoe shape, for example, the light emitting diode module 120 may be installed at a concavely formed position and/or a convexly formed position even if the light guide plate 110 is formed in other shapes than the horseshoe shape.
When light emitted from the light emitting diode module 120 is incident on the light guide plate 110 to perform surface emission in the light guide plate 110, it is necessary to perform surface emission through the entire planar-shaped light guide plate 110. As such, since uniform light needs to be emitted to the entire light guide plate 110 while a predetermined light is incident, according to the first exemplary embodiment of the present invention, the light emitting diode module 120 is installed in the concave portion of the light guide plate 110 such that the light incident on the light guide plate 110 from the light emitting diode module 120 is disposed within a distance as short as possible.
Further, if necessary, the light emitted from the light emitting diode modules 120 mounted in the light guide plate 110 does not have the same luminous intensity, but may have different luminous intensities according to the mounting positions. That is, the light emitting diodes 122 having high luminous intensity may be disposed in a relatively wide area according to the shape of the light guide plate 110, and the light emitting diodes 122 having low luminous intensity may be disposed in a narrow area.
Meanwhile, like the planar shape of the light guide plate 110 according to the first exemplary embodiment of the present invention as described above, although it is described that one light guide plate 110 is provided with at least one concave portion, the light guide plate 110 as shown in fig. 3 using a plurality of light guide plates may be formed. That is, the plurality of light guide plates may be coupled to each other in a state where the plurality of light emitting diode modules 120 are all mounted on one side of the plurality of light guide plates, so that the plurality of light guide plates may have a planar shape as shown in fig. 3.
Further, describing the arrangement in which the light emitting diode module 120 is mounted in the light guide plate 110 with reference to fig. 4, the printed circuit board 124 of the light emitting diode module 120 may be mounted on the vehicle body 200, and the light emitting diodes 122 may be mounted to irradiate light emitted from the light emitting diodes 122 to the side of the light guide plate 110 in a state in which the light emitting diodes 122 are vertically mounted to the printed circuit board 124. With this configuration, light irradiated from the light emitting diodes 122 may be incident on the light guide plate 110 and move within the light guide plate 110 by total internal reflection, and the light may be reflected from the pattern part 112 of the light guide plate 110 to be emitted toward the upper surface of the light guide plate 110.
Fig. 5 is a sectional view showing a lighting device of a vehicle according to a second exemplary embodiment of the present invention.
The lighting device 100 of the vehicle according to the second exemplary embodiment of the present invention includes a light emitting diode module 120, a light guide plate 110, and a cover member 130. In the second exemplary embodiment of the present invention, the same description as that of the first exemplary embodiment of the present invention will be omitted.
According to the second exemplary embodiment of the present invention, the light emitting diode module 120 is mounted on the side of the light guide plate 110 as shown in fig. 3. In this case, the light emitting diode module 120 may include a light emitting diode 122 and a printed circuit board 124, and the light emitting diode 122 is mounted on the printed circuit board 124 in a horizontal direction. Further, the printed circuit board 124 mounted with the light emitting diodes 122 is mounted to the vehicle body 200 in a vertical direction so that light emitted from the light emitting diodes 122 may be irradiated to a side surface of the light guide plate 110.
Accordingly, light emitted from the light emitting diode module 120 is incident on the light guide plate 110 from a side surface of the light guide plate 110 to be surface-emitted in the light guide plate 110.
Fig. 6 is a diagram showing a lighting device of a vehicle according to a third exemplary embodiment of the present invention.
The lighting device 100 of the vehicle according to the third exemplary embodiment of the present invention includes a light emitting diode module 120, a light guide plate 110, and a cover member 130. In the third exemplary embodiment of the present invention, the same description as that of the first exemplary embodiment of the present invention will be omitted.
According to the third exemplary embodiment of the present invention, the light emitting diode module 120 is mounted on the side surface of the light guide plate 110. In this case, one light emitting diode module 120 is not mounted, but three light emitting diode modules 120 are mounted, similar to the first exemplary embodiment of the present invention. Two light emitting diode modules 120 are each mounted at both ends of the light guide plate 110 formed in a horseshoe shape, and the remaining one of the three light emitting diode modules is mounted in a concave portion of the horseshoe shape.
Since both the light emitting diode modules 120 are mounted at the end of the horseshoe, surface emission can be performed in the horseshoe-shaped light guide plate 110. Further, the remaining one of the light emitting diode modules 120 is installed in the horseshoe-shaped concave portion to irradiate light to a position where light irradiated from the light emitting diode modules 120 installed at both ends may not reach, so that the light may be uniformly emitted through the entire light guide plate 110.
As such, since the light emitting diode module 120 is partially mounted on the side surface of the light guide plate 110, surface emission may be uniformly performed through the entire light guide plate 110.
Fig. 7 is a diagram showing the configuration of a tail lamp and a stop lamp of a lighting device of a vehicle according to a fourth exemplary embodiment of the present invention.
The lighting device of the vehicle according to the fourth exemplary embodiment of the present invention may include a tail lamp and a stop lamp, and in the lighting device, the tail lamp may have the same structure as that of the first exemplary embodiment of the present invention. In this case, unlike the configuration of the tail lamp, the stop lamp is installed in a direct type structure in which a plurality of light emitting diode modules 320 are installed under the cover member 330. Therefore, according to the fourth exemplary embodiment of the present invention, the light emitting diode modules 120 are mounted on the side surface of the light guide plate 110 so that the tail lamp can perform surface emission in the light guide plate 110, and the stop lamp directly emits light emitted from the plurality of light emitting diode modules 320 mounted under the cover part 330 without the light guide plate. In this case, as shown in fig. 3 or 6, the tail lamp is provided with a concave portion, and the stop lamp emits light in the convex portion, so that the lights emitted from the tail lamp and the stop lamp may not interfere with each other.
Fig. 8 is a diagram showing the configuration of a tail lamp and a stop lamp of a lighting device of a vehicle according to a fifth exemplary embodiment of the present invention.
The lighting device of a vehicle according to the fifth exemplary embodiment of the present invention may include a tail lamp and a stop lamp, and in the fifth exemplary embodiment of the present invention, the description of the same components as those of the first and fourth exemplary embodiments of the present invention will be omitted.
According to the fifth exemplary embodiment of the present invention, as shown in fig. 3 or 6, the light guide plate 110 of the tail lamp has at least one concave portion, and the inside of the planar shape of the light guide plate 110 is formed in a curved state to have a predetermined angle corresponding to the planar shape of the planar shape. Accordingly, light emitted from the light emitting diode module 120 is incident on the inner side of the light guide plate 110 from the bent end of the light guide plate 110 to be surface-emitted in the light guide plate 110.
As described above, since the light guide plate 110 is formed in a curved shape, the light emitting diode module 120 for irradiating light to the tail lamp can be mounted on the same vehicle body 200 as the light emitting diode module 120 for the stop lamp. In this case, according to the fifth exemplary embodiment of the present invention, the stop lamp may be installed in a direct type, similar to the fourth exemplary embodiment of the present invention.
Fig. 9 is a diagram showing the configuration of a tail lamp and a stop lamp of a lighting device of a vehicle according to a sixth exemplary embodiment of the present invention.
The lighting device of a vehicle according to the sixth exemplary embodiment of the present invention may include a tail lamp and a stop lamp, and in the sixth exemplary embodiment of the present invention, the description of the same components as those of the first, fourth, and fifth exemplary embodiments of the present invention will be omitted.
The rear lamp according to the sixth exemplary embodiment of the present invention is installed to have the same structure as that of the fifth exemplary embodiment of the present invention, and the stop lamp includes a light emitting diode module 320 and a light guide plate 310. The light guide plate 310 of the stop lamp has a predetermined shape, and both ends of the light guide plate 310 are formed in a curved shape. Accordingly, both ends of the light guide plate 310, which are bent, are provided with the light emitting diode modules 320, so that light emitted from the light emitting diode modules 320 may be incident on the light guide plate 310 to be surface-emitted in the light guide plate 310. Therefore, according to the sixth exemplary embodiment of the present invention, the stop lamp may emit light in the light guide plate 310 through surface emission, similar to the tail lamp.
Fig. 10 is a diagram showing a lighting device of a vehicle according to a seventh exemplary embodiment of the present invention.
The lighting device 100 of the vehicle according to the seventh exemplary embodiment of the present invention includes a light emitting diode module, a light guide plate 110, and a cover member. In the seventh exemplary embodiment of the present invention, the same description as that of the foregoing exemplary embodiment of the present invention will be omitted.
According to the seventh exemplary embodiment of the present invention, the light emitting diode module 120 is mounted on one side of the light guide plate 110. Further, as shown, the light guide plate 110 may have at least one curvature. Similar to the foregoing exemplary embodiment of the present invention, as shown in fig. 3, the planar shape of the light guide plate 110 is formed in the shape of a horseshoe, and the side thereof may be formed to have at least one curvature.
The reason why the light guide plate 110 has the curvature is that the shape of the light guide plate 110 may be designed to meet the design of a vehicle.
Further, the inside of the light guide plate 110 may be provided with a pattern part 112 of the light guide plate, the pattern part 112 causing light emitted from the light emitting diode module 120 to be reflected therefrom to emit light toward the upper side of the light guide plate 110. Since the light guide plate 110 is formed to have a curvature, the position and size of the pattern part 112 may be changed. For example, as shown in fig. 10, if the light guide plate 110 is formed to be bent downward as it is away from the light emitting diode module 120, the pattern members 112 may be formed such that the spaced distance between the pattern portions may be formed to be narrow or the size of the pattern portions 112 may be formed to be large as the pattern portions 112 are away from the light emitting diode module.
As described above, since the shape of the light guide plate 110 is changed, positions such as intervals between the pattern parts 112 formed in the light guide plate may be changed, or the size of the pattern parts 112 may be adjusted, so that uniformity of light emitted toward the upper surface of the light guide plate 110 may be adjusted.
Fig. 11 is a diagram showing a lighting device of a vehicle according to an eighth exemplary embodiment of the present invention.
The lighting device 100 of the vehicle according to the eighth exemplary embodiment of the present invention includes a light emitting diode module 120, a light guide plate 110, and a cover member. In the eighth exemplary embodiment of the present invention, the same description as that of the foregoing exemplary embodiment of the present invention will be omitted.
In the light guide plate 110 according to the eighth exemplary embodiment of the present invention, as shown, a surface on which light is emitted may be convexly formed. Accordingly, light emitted from the light guide plate 110 may be collected in a specific direction. In addition, the light emitting surface of the light guide plate 110 may also be concavely formed.
As such, since the light emission surface of the light guide plate 110 is formed convexly or concavely, the interval or size of the pattern part 112 formed in the light guide plate 110 may be adjusted, so that the uniformity of light emitted to the light emission surface may be adjusted.
Fig. 12 is a diagram showing a lighting device of a vehicle according to a ninth exemplary embodiment of the present invention.
The lighting device 100 of the vehicle according to the ninth exemplary embodiment of the present invention includes first and second light emitting diode modules 120a and 120b, and first and second light guide plates 110a and 110b, and in the ninth exemplary embodiment of the present invention, the same description as that of the foregoing exemplary embodiment of the present invention will be omitted.
As shown in fig. 12, according to the ninth exemplary embodiment of the present invention, the light guide plates 110a and 110b may be both installed in the lighting device 100 of the vehicle in a state where they are divided into two. As such, since the first and second light guide plates 110a and 110b are both mounted, the light emitting diode modules 120a and 120b are provided in two, and thus may be both mounted on the first and second light guide plates 110a and 110 b. The first and second light emitting diode modules 120a and 120b may be mounted on one sides of the first and second light guide plates 110a and 110b, and may be mounted on a side surface having a relatively long length among side surfaces of the first and second light guide plates 110a and 110 b. Accordingly, light emitted from the first and second light emitting diode modules 120a and 120b is incident on the first and second light guide plates 110a and 110b, so that the light can be irradiated at a relatively short distance.
Fig. 12 illustrates that the first light emitting diode module 120a is mounted under the first light guide plate 110a and the second light emitting diode module 120b is mounted under the second light guide plate 110b in a state where the first light guide plate 110a is disposed at an upper portion and the second light guide plate 110b is disposed at a lower portion. Each of the light emitting diode modules 120a and 120b may be mounted at one of the upper or lower portions of each of the light guide plates 110a and 110b while being mounted on a relatively long length side among the sides of the light guide plates 110a and 110 b.
Fig. 13A and 13B are views illustrating a light guide plate included in a lighting device of a vehicle according to an exemplary embodiment of the present invention, and fig. 14 is a view illustrating a light guide plate included in a lighting device of a vehicle according to another exemplary embodiment of the present invention.
Referring to fig. 13A and 13B, the upper surface of the light guide plate 110 according to an exemplary embodiment of the present invention may be provided with an upper pattern R formed in a length direction. As shown, the upper pattern R may be formed on the upper surface of the light guide plate 110 and may be formed as a plurality of grooves or protrusions, and may control the shape of light emitted through the light guide plate 110. In addition, the upper pattern R prevents light emitted through the light guide plate 110 from being totally reflected at the inner side of the light guide plate 110.
Each side of the upper pattern R may be formed in a triangular shape as shown in fig. 13B, or may be formed in a convex shape as shown in fig. 14. The height and gradient of the upper pattern R may be controlled according to the shape of light emitted through the light guide plate 110. In this case, when the upper pattern R and the side section of the pattern part 112 are formed in a triangular shape, the upper vertex having the triangular shape may be formed in a rounded shape.
Further, as shown in fig. 13A, the pattern part 112 formed inside the light guide plate 110 may include a line pattern 112a formed in a length direction, and a dot pattern 112b formed in a dot shape.
The line patterns 112a may be formed in the same direction or a perpendicular direction to the upper pattern R, and may be formed in a direction perpendicular to the direction of light emitted from the light emitting diode module 120. The dot patterns 112b may be disposed between the line patterns 112 a. As shown in fig. 13A, the line pattern 112a extends in the length direction, and then a dot pattern 112b may be formed, and the line pattern 112a and the dot pattern 112b may be disposed to be separated from each other. Alternatively, only the line pattern 112a may be formed, and only the dot pattern 112b may be formed.
As such, since the dot pattern 112b is formed, the light emitted from the light emitting diode module 120 may be controlled to present a mark or the like in the shape thereof while the emitted light is emitted through the light guide plate 110.
Fig. 15A to 15G are diagrams illustrating an example of a dot pattern shape of a pattern portion formed inside a light guide plate of a lighting device of a vehicle according to an exemplary embodiment of the present invention.
As shown in fig. 15A and 15B, the dot pattern 112B is formed in a pentahedron shape in which a planar shape is formed in a square shape, two side surfaces facing each other are formed in a triangular shape, and the other two side surfaces facing each other are formed in a trapezoidal shape. In this case, the light emitted from the light emitting diode module 120 is incident on the side having the trapezoidal shape to reflect the light toward the upper side of the light guide plate 110. Accordingly, light emitted toward the upper side of the light guide plate 110 may be presented as light emitted from one point through the dot pattern 112 b.
Further, as shown in fig. 15C and 15D, the dot pattern 112b may be formed in a shape of a pyramid in which a planar shape thereof is a square shape and a side thereof is a triangular shape. As shown in fig. 15E to 15G, the dot pattern 112b may be formed in a modified pyramid shape in which the sides of a planar shape formed in a diamond shape are formed in a triangular shape. As such, the dot pattern 112b is formed in the shape of a pyramid, so that light emitted through the dot pattern 112b having the shape of a pyramid can be more uniformly emitted. As such, the shape of the dot pattern 112b may be formed differently.
Fig. 16A to 16D are diagrams illustrating simulation results of a lighting device of a vehicle according to an exemplary embodiment of the present invention.
Fig. 16A to 16D show simulation results for forming the upper pattern R in the light guide plate 110 and for forming the plurality of line patterns 112a therein in the lighting device 100 of the vehicle according to the exemplary embodiment of the present invention. In this case, the simulation is performed under the following conditions: the thickness of the light guide plate 110 is 2.5t (mm), the upper pattern R formed on the light guide plate 110 is formed in a triangular shape, and the upper vertex having the triangular shape is formed in a rounded shape. In this case, the radius of the apex having the rounded shape is 0.1mm, the height of the triangular shape is 0.208mm, and the interval of the upper pattern R is 0.5 mm. Further, the cross section of the line patterns 112a is formed in the interior 110 of the light guide plate in a triangular shape, and the angle of the upper vertex having the triangular shape is set to 98 °, so that the line patterns 112a can be formed to be symmetrical to each other. In this case, the height of the triangle is set to 0.2mm, and the interval of the line patterns 112a is set to 1.0 mm.
As described above, if the light guide plate 110 is formed, as shown in fig. 16A, light incident on the light guide plate 110 may be reflected to be emitted toward the upper side of the light guide plate 110. Further, it can be confirmed from fig. 16B that light is uniformly emitted through the entire surface of the light guide plate 110, and it can be confirmed from fig. 16C that light having an angle of a desired direction in the vertical direction and the horizontal direction of the light guide plate 110 is emitted. Further, it can be confirmed from fig. 16D that the emitted light is concentrated at the center.
According to an exemplary embodiment of the present invention, when the shape of the light guide plate used in the lighting device installed at the rear of the vehicle to perform surface emission is formed in the shape of a horseshoe or a ring, the light emitting diode module may be installed at a concave position of the horseshoe shape, or may be installed along the inside of the ring shape, thereby uniformly performing surface emission through the entire light guide plate.
Further, as described above, since the light emitting diode module is mounted on the light guide plate, even if the shape of the light guide plate is changed, the arrangement of the light emitting diode module can be made more efficient.
Although the detailed description of the present invention has been made with reference to the accompanying drawings, the foregoing exemplary embodiments have been described with reference to preferred examples thereof only, and thus the present invention is not to be construed as being limited to the exemplary embodiments and the scope of the present invention will be construed as described claims and equivalent concepts.

Claims (9)

1. A lighting device of a vehicle, the lighting device comprising:
a light emitting diode module emitting light; and
a light guide plate having a side surface on which light emitted from the light emitting diode module is incident, and emitting the light incident on the side surface to perform surface emission upward,
wherein the light guide plate has a planar shape including at least one concave portion and a convex portion, the light emitting diode module is mounted in the concave portion and/or the convex portion,
the light guide plate includes an upper pattern formed on an upper surface thereof and a lower pattern formed on a lower surface thereof to upwardly emit light incident on a side surface of the light guide plate, and
the upper pattern and the lower pattern are formed in directions perpendicular to each other,
wherein the lower pattern comprises:
a line pattern formed inside the light guide plate and having a length along one direction; and
a dot pattern formed inside the light guide plate and formed in a pentahedral or pyramidal shape,
wherein the line pattern is spaced apart from the dot pattern in the one direction.
2. The lighting device of a vehicle according to claim 1, wherein the light emitting diode module comprises:
at least one light emitting diode emitting light; and
a printed circuit board on which the at least one light emitting diode is mounted.
3. The lighting device of a vehicle according to claim 1, wherein the planar shape of the light guide plate is formed in a shape of a horseshoe having a predetermined width,
wherein the light emitting diode module is provided in plurality, and
one of the plurality of light emitting diode modules is mounted in a concave portion of the horseshoe shape, with the remaining light emitting diode modules mounted at the end of the horseshoe shape.
4. The lighting device of a vehicle according to claim 1, further comprising:
and a cover member positioned above the light guide plate and transmitting light emitted from the light guide plate.
5. The lighting device of a vehicle according to claim 1, wherein the light emitting diode modules are provided in at least two,
the light guide plates are arranged in at least two, and
each of the at least two light guide plates is provided with each of the light emitting diodes.
6. The lighting device of a vehicle according to claim 1, wherein the dot pattern has a planar shape formed in a square shape, two sides facing each other formed in a triangular shape, and the other two sides facing each other formed in a trapezoidal shape.
7. The lighting device of a vehicle according to claim 1, wherein the dot pattern has a planar shape formed in a square shape and four sides formed in a triangular shape.
8. The lighting device of a vehicle according to claim 1, wherein the upper pattern has a plurality of protrusions having a length in one direction and formed on an upper surface of the light guide plate.
9. The lighting device of a vehicle according to claim 1, wherein the upper pattern has a plurality of grooves having a length in one direction and formed on an upper surface of the light guide plate.
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KR102435848B1 (en) 2022-08-24
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JP2016195097A (en) 2016-11-17
KR20160117122A (en) 2016-10-10
CN110056832A (en) 2019-07-26

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