WO2019027088A1 - 백라이트 유닛 - Google Patents
백라이트 유닛 Download PDFInfo
- Publication number
- WO2019027088A1 WO2019027088A1 PCT/KR2017/009741 KR2017009741W WO2019027088A1 WO 2019027088 A1 WO2019027088 A1 WO 2019027088A1 KR 2017009741 W KR2017009741 W KR 2017009741W WO 2019027088 A1 WO2019027088 A1 WO 2019027088A1
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- WIPO (PCT)
- Prior art keywords
- light
- backlight unit
- driver
- refraction means
- unit
- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
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- 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
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- 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
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- 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
- B60Q1/2661—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 mounted on parts having other functions
- B60Q1/2665—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 mounted on parts having other functions on rear-view mirrors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/02—Rear-view mirror arrangements
- B60R1/06—Rear-view mirror arrangements mounted on vehicle exterior
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
- B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
- B60R1/1207—Mirror assemblies combined with other articles, e.g. clocks with lamps; with turn indicators
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- 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]
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- 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
- F21S43/15—Strips of light sources
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- 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
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
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- 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
- F21S43/2605—Refractors
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- 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
- F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
- F21S43/31—Optical layout thereof
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- 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
- F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V3/00—Globes; Bowls; Cover glasses
- F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V5/00—Refractors for light sources
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
- F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
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- 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
- G02B6/0023—Means for improving the coupling-in of light from the light source into the light guide provided by one optical element, or plurality thereof, placed between the light guide and the light source, or around the light source
- G02B6/0031—Reflecting element, sheet or layer
-
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
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- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0053—Prismatic sheet or layer; Brightness enhancement element, sheet or layer
-
- 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
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- 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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
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- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0091—Positioning aspects of the light source relative to the light guide
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- 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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
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- 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]
Definitions
- the present invention relates to a backlight unit for an outside mirror of an automobile, and more particularly, to a backlight unit for an outside mirror of a vehicle capable of refracting light emitted from a backlight unit toward a driver's seat.
- the outside mirror of a car is a basic part of a vehicle as a reflector that can see the surroundings of the rear left and right of the vehicle.
- a blind spot of a certain angle occurs in the outside mirror of a vehicle due to limitations of the driver's visual observation and the structural characteristics of the vehicle.
- An auxiliary device such as an auxiliary side mirror or the like is used to more easily confirm that a side lane vehicle is located in a square area behind the left and right sides of a vehicle which is difficult for the driver to confirm through the outside mirror at the time of vehicle operation, This position can not be completely shown.
- a detection sensor using a radar, an ultrasonic sensor, or a camera detects the presence of another vehicle in a square area behind the left and right sides of the vehicle, (Blind Spot Monitoring System), which is a warning system for providing the driver with the warning signal, is applied.
- Blind Spot Monitoring System which is a warning system for providing the driver with the warning signal
- FIG. 2 there is used a BSM system in which an indicator icon is etched on an outside mirror and a backlight unit is attached to the back of the glass.
- the backlight unit when a signal is sent to another vehicle in a rectangular area, the backlight unit emits light to illuminate the indicator icon, thereby blinking an indicator icon on the outside mirror surface to inform the driver.
- a backlight unit of a surface-emitting type capable of using the entire light emission surface of the backlight is disclosed in Korean Patent No. 10-1526792
- Korean Patent Application No. 10-2016-0072565 (filed on June 10, 2016)
- Korean Patent Application No. 10-2017-0036767 (filed on March 23, 2017).
- the indicator icon on the BSM system blinks to inform the driver that another vehicle has entered the square area
- the safety of the vehicle operation can be improved, but the blinking of the BSM indicator icon of the outside mirror is performed by the driver
- the auxiliary direction indicator mounted on the outer end of the outside mirror may be blinked to cause confusion, which may interfere with the driver of the vehicle traveling in the rear left and right. Because of this problem, the BSM indicator limits the amount of BSM indicator light leaking to the rest of the area (the area of another vehicle driver) except inside the vehicle.
- the outer region of the side (T 0 , T 1 ) parallel to the side of the vehicle body with respect to both outboard mirrors is defined as a "light leakage area"
- the luminous intensity of the BSM indicator in the region is limited to, for example, 0.2 cd or less.
- the flashing of the BSM indicator may not be recognized as blinking of the auxiliary turn signal lamp to the driver of another vehicle.
- the brightness of the BSM indicator in the driver area is required to be, for example, about 0.4 to 0.6 cd.
- a means for changing the direction of the light in the light path can be used in the back reflection method in which light is reflected on the rear reflection surface to illuminate the indicator icon, but the structure of the device is complicated and the light uniformity Which is difficult to implement.
- a backlight unit for an outside mirror of an automobile includes a light source unit having at least one light source; A light processing unit having at least one light path through which light irradiated from the light source is dispersed and a reflection surface for reflecting light passing through the light path; And light refraction means disposed at the light exit of the light processing portion and refracting the light emitted from the light exit of the light processing portion toward the driver's seat.
- a plurality of protrusions are provided on the back surface of the light refraction means, and the front surface of the light refraction means through which the light incident on the light refraction means is emitted may be formed in a plane parallel to the abscissa of the light refraction means.
- the light refraction means is formed in a plane parallel to the abscissa of the light refraction means, and the front surface of the light refraction means, through which light is emitted, is formed as a protrusion (not shown) As shown in FIG.
- the inclined surface of the light refraction means in the backlight unit mounted on the driver's side of the automobile on the back side of the outside mirror is perpendicular to the horizontal axis of the light refraction means
- the angle with respect to the surface to be in contact may preferably be 39 to 59 degrees, more preferably 44 to 54 degrees.
- the angle formed by the inclined surface of the light refraction means in the backlight unit provided on the back surface of the outside mirror mounted on the passenger side of the automobile with the surface perpendicular to the transverse axis of the light refraction means is preferably 47 to 67 Deg., And more preferably 52 deg. To 62 deg.
- the brightness of the driver region of the light irradiated through the backlight unit may be about 0.4 to 0.6 cd, and the brightness of the driver region of the other vehicle may be about 0.2 cd or less .
- a backlight unit for an outside mirror of a vehicle comprising: a case having an inner space and an opening formed in a side surface thereof; A light source mounted on an inner space of the case and capable of emitting light when power is supplied; A light guide plate for diffusing light emitted from the light source portion over the entire area; A reflection plate stacked on a back surface of the light guide plate and reflecting the light emitted from the back surface of the light guide plate to the front surface of the light guide plate; And a light refraction unit stacked on the front surface of the light guide plate and refracting the light emitted from the front surface of the light guide plate toward the driver's seat.
- a backlight unit for an outside mirror of an automobile includes a lower casing; A light source mounted on an inner bottom surface of the lower casing and capable of emitting light when power is supplied; A light guide plate which is mounted on an inner upper portion of the lower casing and transmits light emitted from the light source unit; A reflection plate stacked on a back surface of the light guide plate and reflecting the light emitted from the back surface of the light guide plate to the front surface of the light guide plate; Light refraction means stacked on the front surface of the light guide plate and refracting the light emitted from the front surface of the light guide plate toward the driver's seat; And an upper casing coupled to an upper end of the lower casing.
- the light emitted from the backlight unit is refracted toward the driver's seat, so that the brightness of the BSM indicator in the driver's area of another vehicle can be lowered than the driver's area of the own vehicle.
- Fig. 1 is a view schematically showing a rectangular area behind the left and right sides of the automobile.
- Figure 2 is a schematic representation of an indicator icon of a BSM system mounted on an outside mirror of an automobile.
- FIG 3 is a diagram showing the luminous intensity condition in the vehicle driver's area and the other vehicle's driver's area of the indicator icon of the BSM system mounted on the outside mirror of the vehicle.
- FIG. 4 is a view schematically showing light irradiation in a backlight unit of a conventional anti-reflection direct type.
- FIG. 5 is an exploded perspective view of a backlight unit according to an embodiment of the present invention.
- Fig. 6 is a schematic perspective view of the light refraction means in the backlight unit of Fig. 5;
- Fig. 7 is a view showing the path of light passing through the light refraction means in the backlight unit of Fig. 5; Fig.
- FIG. 8 (a) is a sectional view of a light refracting means of a backlight unit according to an embodiment of the present invention, which is mounted on an outside mirror on a driver's seat side.
- FIG. 8 (b) is a graph showing the luminous intensity distribution along the direction in the outside mirror equipped with the backlight unit having the optical refracting means of FIG. 8 (a).
- FIG. 9 (a) is a sectional view of the optical refracting means of the backlight unit according to the embodiment of the present invention, which is mounted on the outside mirror on the passenger side.
- FIG. 9 (b) is a graph showing the luminous intensity distribution along the direction in the outside mirror equipped with the backlight unit having the optical refracting means of FIG. 9 (a).
- FIG. 10 is an exploded perspective view of a backlight unit according to another embodiment of the present invention.
- FIG. 11 is a schematic perspective view of the light refraction means in the backlight unit of Fig.
- FIG. 12 is an exploded perspective view of a backlight unit according to another embodiment of the present invention.
- FIG. 13 is a schematic perspective view of the light refraction means in the backlight unit of Fig.
- the driver's seat is disposed on the right side and the passenger's seat is disposed on the left side.
- the driver's seat is arranged on the left side, The present invention is not limited thereto.
- FIG. 5 is an exploded perspective view of a backlight unit according to an embodiment of the present invention
- FIG. 6 is a schematic perspective view of the optical refraction means in the backlight unit of FIG. 5, As shown in FIG.
- a backlight unit 10 for an automotive outside mirror includes a housing 20, a light source unit 30, a light processing unit 40, and a light refraction unit 60 ).
- the housing 20 is a substantially trapezoidal hexahedron-shaped component having an internal space 22 therein for accommodating the respective components.
- a window 21 made of transparent color or white is formed on the front surface of the housing 20
- a side opening 23 for inserting the component parts can be formed on one side of the housing 20.
- the light source unit 30 may include at least one LED 31 mounted on the PCB and may be mounted on the housing 20 to emit light when power is supplied to the housing 20, It may be configured to radiate in a direction parallel to the light passage 41 of the processing section 40.
- the light source 31 of the present invention is not limited to the LED, and other types of light sources capable of exhibiting functions equivalent to those of the LED may be used.
- the light processing section 40 may include at least one light passage 41 and at least one reflecting surface 42.
- the light irradiated from the light source 31 is uniformly dispersed while passing through the light passage 41, so that the uniformity of the light can be greatly improved over the entire cross section of the light passage 41.
- a reflective coating layer 44 may be formed on the surface of the light path 41 in order to reduce the light loss as much as possible.
- the reflective surface 42 is a component that reflects light that has passed through the light path 41 and is emitted through at least one front opening 43 of the light processing portion 40.
- the reflective surface 42 is a light path 41 at the obtuse angle with respect to the longitudinal direction.
- the optical refracting means 60 is disposed at the light exit of the light processing unit 40 and refracts the light emitted from the light exit of the light processing unit 40 toward the driver's seat.
- the luminous intensity of the backlight unit 10 illuminated to the driver's area of the vehicle positioned on the left side of the mirror normal of the outside mirror 1000A on the driver's seat side is set to about 0.4 to 0.6 cd while maintaining, the brightness in an area outside the light leakage region (light leakage area) of the shaft (T 0) parallel to the vehicle body side region, in particular, which is located on the right side of the mirror normal line of the outside mirror (1000A) of the driver's seat side It can be maintained at about 0.2 cd or less.
- the front surface 61 of the optical refraction means 60 is formed in a plane, and the back surface of the optical refraction means 60 facing the light exit of the optical processing unit 40
- a plurality of protrusions 62 may be arranged in the longitudinal direction, each of the protrusions 62 including a vertical surface 62a and an inclined surface 62b inclined in a direction opposite to the driver's seat.
- the projecting portion 62 formed by the vertical surface 62a and the inclined surface 62b of the optical refraction means 60 of the backlight unit 10 mounted on the driver side outboard mirror 1000A When the angle? Is about 49 degrees, the driver's eye point (an azimuth angle of about -23.224 degrees from the normal of the outside mirror on the driver's side, about 800 mm away from the center of the mirror from the center of the outside mirror 1000A
- the light intensity of the light irradiated from the backlight unit 10 along the circumference of the circumference with the radius to the distance from the light source to the light source is measured under the following optical simulation conditions.
- the front surface 61 of the optical refraction means 60 in the backlight unit 10 provided on the back surface of the outside mirror 1000A mounted on the driver's seat side of the automobile is formed in a plane
- a plurality of protrusions 62 formed of a vertical surface 62a and an inclined surface 62b inclined in a direction opposite to the driver's seat may be arranged in the longitudinal direction on the back surface facing the outlet.
- the inclined surface 62b of the light refraction means 60 in the backlight unit 10 provided on the back surface of the outside mirror 1000A has a surface 62a perpendicular to the transverse axis of the light refraction means, The angle? May preferably be about 39 ° to 59 °.
- the angle ⁇ formed by the inclined plane 62b of the optical refraction means 60 with the plane 62a perpendicular to the abscissa of the optical refraction means may be more preferably about 44 ° to 54 °
- the front surface of the light refraction means 60 is formed as a protrusion portion having a vertical surface and an inclined surface (Not shown).
- the angle of the protrusion 62 formed by the vertical surface 62a and the inclined surface 62b in the optical refraction means 60 of the backlight unit 10 mounted on the passenger side passenger side 1000B (an azimuth angle of about 33.595 degrees to the right from the normal of the passenger-side outboard mirror and about 1300 mm from the center of the mirror) from the center of the outside mirror 1000B
- the light intensity of the light irradiated from the backlight unit 10 along the circumference of the circumference with the radius to the distance from the mirror 10 to the point of the mirror is measured under the following optical simulation conditions.
- Optical Simulation Condition The same as the optical simulation condition of the backlight unit in the above-described outside mirror on the driver's seat side 1000A
- the front surface 61 of the optical refraction means 60 in the backlight unit 10 provided on the back surface of the outside mirror 1000B mounted on the passenger side of the automobile is formed in a plane
- a plurality of protrusions 62 formed of a vertical surface 62a and an inclined surface 62b inclined in a direction opposite to the driver's seat may be arranged in the longitudinal direction on the back surface facing the outlet.
- the inclined surface 62b of the light refraction means 60 in the backlight unit 10 provided on the back surface of the outside mirror 1000B has a surface 62a perpendicular to the transverse axis of the light refraction means,
- the angle? May preferably be about 47 ° to 67 °.
- the angle ⁇ formed between the inclined surface 62b of the photorefractive unit 60 and the surface 62a perpendicular to the abscissa of the photorefractive unit may be more preferably about 52 ° to 62 ° .
- the front surface of the light refraction means 60 is formed as a protrusion portion having a vertical surface and an inclined surface (Not shown).
- the material of the optical refraction means 60 may be glass, plastic, polymethylmethacrylate (PMMA) resin, quartz, or the like, but the present invention is not limited thereto and other known materials capable of refracting the optical path may be used .
- PMMA polymethylmethacrylate
- the diffusion plate 70 is a component positioned on the front surface of the light processing unit 40 in which the front opening 42 is formed and can realize more uniform brightness and color through the diffusion plate 70. Also, the diffuser plate 70 may be disposed on the front surface of the light refraction means 60. [ However, the diffusion plate 70 is not an essential component that must be provided in the backlight unit 10.
- the luminous intensity of the backlight unit 10 illuminated to the driver's area of the own vehicle can be adjusted to about 0.4 -
- the light intensity of the backlight unit 10 in a light leakage area which is an area outside the axis T 0 , T 1 parallel to the vehicle body side, 0.2 cd or less.
- FIG. 10 the backlight unit 100 according to the second embodiment of the present invention will be described with reference to FIGS. 10 and 11.
- FIG. 10 is a diagrammatic representation of the backlight unit 100 according to the second embodiment of the present invention.
- the driver's seat is arranged on the right side and the passenger's seat is arranged on the left side.
- the driver's seat is arranged on the left side,
- the present invention is not limited thereto.
- FIG. 10 is an exploded perspective view of a backlight unit according to a second embodiment of the present invention
- FIG. 11 is a schematic perspective view of a light refraction unit in the backlight unit of FIG.
- a backlight unit 100 for an automotive outside mirror includes a case 120, a light source unit 130, a light processing unit 140, a reflection plate 150, And a photorefractive means 160.
- the case 120 and the light source unit 130 are similar in structure to the housing 20 and the light source unit 30 in the first embodiment, respectively, and thus the detailed description thereof will be omitted.
- the light guide plate 140 is a plate-shaped component that uniformly diffuses the light emitted from the light source unit 130 to the entire area of the light guide plate 140 to convert the point light source or the linear light source into a surface light source. And is mounted in the inner space of the case 120. [ The light emitted from the light source 130 is incident into the light guide plate 140 and then the light incident into the light guide plate 140 is irregularly reflected by the surface pattern formed on the back surface of the light guide plate 140, And is uniformly diffused in the region.
- the reflection plate 150 is a plate-shaped component that is stacked on the back surface of the light guide plate 140 and reflects light.
- the reflection plate 150 reflects light such that light emitted from the back surface of the light guide plate 140 faces the front surface of the light guide plate 140 It acts to prevent the loss of light.
- the photorefractive unit 160 is stacked on the front surface of the light guide plate 140 and acts to refract light emitted from the front surface of the light guide plate toward the driver's seat.
- optical refraction means 160 are similar to those of the optical refraction means 60 provided in the backlight unit 10 according to the first embodiment, and detailed description thereof will be omitted.
- the diffusion plate 170 is a component positioned on the front or rear surface of the light refraction means 160 and can realize more uniform brightness and color through the diffusion plate 170. [ However, this diffusion plate 170 is not an essential component that must be necessarily provided in the construction of the backlight unit 100.
- FIG. 12 the backlight unit 200 according to the third embodiment of the present invention will be described with reference to FIGS. 12 and 13.
- FIG. 12 is a diagrammatic representation of the backlight unit 200 according to the third embodiment of the present invention.
- the driver's seat is arranged on the right side and the passenger's seat is arranged on the left side.
- the driver's seat is arranged on the left side, The present invention is not limited thereto.
- FIG. 12 is an exploded perspective view of a backlight unit 200 according to a third embodiment of the present invention
- FIG. 13 is a schematic perspective view of a light refraction unit 260 in the backlight unit of FIG.
- an automotive outboard mirror backlight unit 200 includes a lower casing 210, a light source unit 230, a light guide plate 240, a reflection plate 250, A light refraction means 260, a diffuser plate 270, and an upper casing 280.
- the light source unit 230, the light guide plate 240 and the reflection plate 250 are similar in construction to the light source unit 130, the light guide plate 140, and the reflection plate 150 in the second embodiment, respectively.
- the lower casing 210 has an opening at the upper portion thereof and the reflection plate 250, the light guide plate 240, the light refraction means 260 and the diffusion plate 270 are stacked in this order,
- the light source unit 230 is disposed. After the respective components 230, 240, 250, 260 and 270 are inserted through the upper opening of the lower casing 210, the upper casing 280 is coupled to the upper end of the lower casing 210 by a known method .
- the light refraction means 260 is stacked on the front surface of the light guide plate 240 and acts to refract light emitted from the front surface of the light guide plate toward the driver's seat.
- optical refraction means 260 are similar to those of the optical refraction means 60 provided in the backlight unit 10 according to the first embodiment, and thus detailed description thereof will be omitted.
- the diffusion plate 270 is a component positioned on the front surface or the back surface of the light refraction means 260 and can realize more uniform brightness and color through the diffusion plate 270.
- the diffusion plate 270 is not an essential component that must be provided in the backlight unit 200.
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multimedia (AREA)
- Microelectronics & Electronic Packaging (AREA)
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- Planar Illumination Modules (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
| 방위각 | -60° | -50° | -40° | -30° | -20° | -10° | 0° |
| 광도(cd) | 0.122 | 0.236 | 0.412 | 0.484 | 0.595 | 0.593 | 0.448 |
| 방위각 | 4° | 10° | 20° | 30° | 40° | 50° | 60° |
| 광도(cd) | 0.204 | 0.152 | 0.140 | 0.198 | 0.197 | 0.185 | 0.157 |
| 방위각 | -60° | -50° | -40° | -30° | -20° | -15.2° | -10° |
| 광도(cd) | 0.098 | 0.113 | 0.119 | 0.075 | 0.094 | 0.194 | 0.413 |
| 방위각 | 0° | 10° | 20° | 30° | 40° | 50° | 60° |
| 광도(cd) | 0.543 | 0.609 | 0.650 | 0.593 | 0.480 | 0.339 | 0.177 |
Claims (15)
- 자동차의 아웃사이드 미러용 백라이트 유닛에 있어서,적어도 하나의 광원(31)이 구비된 광원부(30);상기 광원(31)으로부터 조사된 빛이 분산되면서 통과하는 적어도 하나의 광통로(41) 및 상기 광통로(41)를 통과한 빛을 반사시키는 반사면(42)이 구비된 광처리부(40); 및상기 광처리부의 광출구에 배치되며, 상기 광처리부의 광출구로부터 조사되는 빛이 운전석을 향하도록 굴절시키는 광굴절수단(60)을 포함하는 백라이트 유닛.
- 제1항에 있어서,상기 광굴절수단(60)에서 상기 광처리부(40)의 광출구에 대향하며 빛이 입사되는 배면에는 수직면(62a)과 운전석의 반대방향으로 경사진 경사면(62b)으로 이루어진 복수의 돌기부(62)가 세로방향으로 배열되고, 광굴절수단으로 입사된 빛이 방출되는 전면은 광굴절수단(60)의 가로축에 평행인 평면으로 형성되는 백라이트 유닛.
- 제2항에 있어서,자동차의 운전석측에 장착되는 아웃사이드 미러(1000A)의 배면에 설치되는 백라이트 유닛(10)에서의 상기 광굴절수단(60)의 상기 경사면(62b)이 상기 광굴절수단의 가로축에 수직인 면(62a)과 이루는 각도(θ)는 약 39°~ 59°이며,자동차의 조수석측에 장착되는 아웃사이드 미러(1000B)의 배면에 설치되는 백라이트 유닛에서(10)의 상기 광굴절수단(60)의 상기 경사면(62b)이 상기 광굴절수단의 가로축에 수직인 면(62a)과 이루는 각도(θ)는 약 47°~ 67°인 백라이트 유닛.
- 제2항 또는 제3항에 있어서,상기 백라이트 유닛(10)을 통하여 조사되는 빛의 운전자 영역의 밝기는 약 0.4 ~ 0.6 cd이며, 다른 차량의 운전자 영역의 밝기는 약 0.2cd 이하인 백라이트 유닛.
- 제1항에 있어서,상기 반사면(42)은 상기 광통로(41)의 길이방향에 대하여 둔각을 이루도록 구성되는 백라이트 유닛.
- 제1항 또는 제2항에 있어서,상기 광통로(41)의 표면에는 반사코팅층(44)이 형성된 백라이트 유닛.
- 제1항 또는 제2항에 따른 백라이트 유닛을 포함하는 자동차용 아웃사이드 미러.
- 자동차의 아웃사이드 미러용 백라이트 유닛(100)에 있어서,내부 공간이 구비되며 측면에 개구가 형성된 케이스(120);상기 케이스(120)의 내부 공간에 탑재되며 전원 공급시 발광 가능한 광원부(130);상기 광원부(130)로부터 조사되는 빛을 전체 영역에 걸쳐 확산시키는 도광판(140); 및상기 도광판(140)의 전면에 적층되며, 상기 도광판의 전면으로부터 조사되는 빛이 운전석을 향하도록 굴절시키는 광굴절수단(160)을 포함하는 백라이트 유닛.
- 자동차의 아웃사이드 미러용 백라이트 유닛(200)에 있어서,하부 케이싱(210);상기 하부 케이싱(210)의 내측 저면에 장착되고, 전원 공급시 발광 가능한 광원부(230);상기 하부 케이싱(210)의 내측 상부에 거치되고, 상기 광원부에서 발산되는 빛을 전달하는 도광판(240);상기 도광판의 전면에 적층되며, 상기 도광판의 전면으로부터 조사되는 빛이 운전석을 향하도록 굴절시키는 광굴절수단(260); 및중앙부가 개구된 형태의 프레임 형상을 가지며, 상기 하부 케이싱(210)의 상단에 결합되는 상부 케이싱(280)을 포함하는 백라이트 유닛.
- 제8항 또는 제9항에 있어서,상기 광굴절수단(160, 260)에서 상기 도광판(140, 240)에 대향하며 빛이 입사되는 배면에는 상기 광굴절수단(160, 260)의 가로축에 대하여 수직인 수직면(162a, 262a)과 운전석의 반대방향으로 경사진 경사면(162b, 262b)으로 이루어진 복수의 돌기부(162, 262)가 세로방향으로 배열되고, 광굴절수단으로 입사된 빛이 방출되는 전면은 광굴절수단(160, 260)의 가로축에 평행인 평면으로 형성되는 백라이트 유닛.
- 제10항에 있어서,자동차의 운전석측에 장착되는 아웃사이드 미러(1000A)의 배면에 설치되는 백라이트 유닛(100, 200)에서의 상기 광굴절수단(160, 260)의 상기 경사면(162b, 262b)이 상기 광굴절수단(160, 260)의 가로축에 수직인 면(162a, 262a)과 이루는 각도(θ', θ'')는 약 39°~ 59°이며,자동차의 조수석측에 장착되는 아웃사이드 미러(1000B)의 배면에 설치되는 백라이트 유닛(100, 200)에서의 상기 광굴절수단(160, 260)의 상기 경사면(162b, 262b)이 상기 광굴절수단(160, 260)의 가로축에 수직인 면(162a, 262a)과 이루는 각도(θ', θ'')는 약 47°- 67°인 백라이트 유닛.
- 제10항에 있어서,상기 백라이트 유닛(100, 200)을 통하여 조사되는 빛의 운전자 영역의 밝기는 약 0.4 ~ 0.6 cd이며, 다른 차량의 운전자 영역의 밝기는 약 0.2cd 이하인 백라이트 유닛.
- 제8항 또는 제9항에 있어서,상기 광굴절수단(160, 260)으로부터 조사되는 빛을 균일하게 확산시키는 확산판(170, 270)이 상기 광굴절수단과 일체로 형성되는 백라이트 유닛.
- 제8항 또는 제9항에 있어서,이중 사출 방식에 의해 상기 케이스(120) 또는 상부 케이싱(280)의 전면에 상기 케이스 또는 상부 케이싱과 일체로 형성되는 윈도우를 더 포함하는 백라이트 유닛.
- 제8항 또는 제9항에 따른 백라이트 유닛(100, 200)을 포함하는 자동차용 아웃사이드 미러.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US16/633,443 US11420562B2 (en) | 2017-08-03 | 2017-09-06 | Backlight unit |
| CN201780093614.0A CN110998178B (zh) | 2017-08-03 | 2017-09-06 | 背光单元 |
| EP17919986.4A EP3663643A4 (en) | 2017-08-03 | 2017-09-06 | BACKLIGHTING UNIT |
| JP2020504675A JP2020529704A (ja) | 2017-08-03 | 2017-09-06 | バックライトユニット |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2017-0098585 | 2017-08-03 | ||
| KR1020170098585A KR101820500B1 (ko) | 2017-08-03 | 2017-08-03 | 백라이트 유닛 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2019027088A1 true WO2019027088A1 (ko) | 2019-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/KR2017/009741 Ceased WO2019027088A1 (ko) | 2017-08-03 | 2017-09-06 | 백라이트 유닛 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US11420562B2 (ko) |
| EP (1) | EP3663643A4 (ko) |
| JP (1) | JP2020529704A (ko) |
| KR (1) | KR101820500B1 (ko) |
| CN (1) | CN110998178B (ko) |
| WO (1) | WO2019027088A1 (ko) |
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|---|---|---|---|---|
| CN110065432B (zh) * | 2019-05-23 | 2023-11-24 | 上海工程技术大学 | 一种用于货车右侧盲区的多功能警示灯 |
| TWM621156U (zh) * | 2021-08-31 | 2021-12-11 | 黃美惠 | 用於車輛後視鏡的盲區警示及方向指示發光裝置 |
| KR20230066747A (ko) * | 2021-11-08 | 2023-05-16 | 현대자동차주식회사 | 후측방 경보 조명용 백라이트 유닛 |
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2017
- 2017-08-03 KR KR1020170098585A patent/KR101820500B1/ko active Active
- 2017-09-06 US US16/633,443 patent/US11420562B2/en active Active
- 2017-09-06 EP EP17919986.4A patent/EP3663643A4/en not_active Withdrawn
- 2017-09-06 JP JP2020504675A patent/JP2020529704A/ja active Pending
- 2017-09-06 CN CN201780093614.0A patent/CN110998178B/zh active Active
- 2017-09-06 WO PCT/KR2017/009741 patent/WO2019027088A1/ko not_active Ceased
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| US8058977B2 (en) | 2006-10-24 | 2011-11-15 | Donnelly Corporation | Exterior mirror having a display that can be viewed by a host driver or drivers of other vehicles |
| KR20140001114U (ko) | 2011-02-14 | 2014-02-20 | 젠텍스 코포레이션 | 외부 차량 거울에 사용하기 위한 로우 프로파일 광학 라이팅 어셈블리 및 그것의 형성 방법 |
| KR101637331B1 (ko) | 2011-11-23 | 2016-07-07 | 무스 미러 시스템즈, 엘엘씨 | 가상 외부 공통 초점을 가지는 광학 어셈블리 |
| JP2014017060A (ja) * | 2012-07-05 | 2014-01-30 | Koito Mfg Co Ltd | 車両用灯具 |
| KR101519763B1 (ko) * | 2013-12-27 | 2015-05-12 | 현대자동차주식회사 | 차량의 사각지역 감시장치 인디케이터 |
| KR101526792B1 (ko) | 2014-03-06 | 2015-06-05 | 현대자동차주식회사 | 자동차의 아웃사이드 미러용 백라이트 유닛 |
| KR20170036767A (ko) | 2014-07-28 | 2017-04-03 | 알까뗄 루슨트 | 통신 시스템에서의 ProSe 서비스 제어 방법 및 장치 |
| KR20160049727A (ko) * | 2014-10-28 | 2016-05-10 | 에스엘 주식회사 | 차량용 사각 지대 알림 장치 |
| KR20160072565A (ko) | 2014-12-15 | 2016-06-23 | 한솔테크닉스(주) | 무선충전 기반의 전원 허브 장치 |
| KR20170007922A (ko) * | 2015-07-13 | 2017-01-23 | 엘지이노텍 주식회사 | 차량용 조명장치 |
Non-Patent Citations (1)
| Title |
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| See also references of EP3663643A4 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2020529704A (ja) | 2020-10-08 |
| US20200223365A1 (en) | 2020-07-16 |
| CN110998178A (zh) | 2020-04-10 |
| CN110998178B (zh) | 2022-08-23 |
| EP3663643A1 (en) | 2020-06-10 |
| KR101820500B1 (ko) | 2018-01-19 |
| EP3663643A4 (en) | 2021-01-06 |
| US11420562B2 (en) | 2022-08-23 |
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