EP4669550A1 - LIGHT EMISSIONING DEVICE AND MOTOR VEHICLE - Google Patents

LIGHT EMISSIONING DEVICE AND MOTOR VEHICLE

Info

Publication number
EP4669550A1
EP4669550A1 EP24707485.9A EP24707485A EP4669550A1 EP 4669550 A1 EP4669550 A1 EP 4669550A1 EP 24707485 A EP24707485 A EP 24707485A EP 4669550 A1 EP4669550 A1 EP 4669550A1
Authority
EP
European Patent Office
Prior art keywords
light emitting
reflector
light
emitting device
emitting assembly
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.)
Pending
Application number
EP24707485.9A
Other languages
German (de)
French (fr)
Inventor
Wei Wang
Si CHEN
Rong Zhou
Guokang LI
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.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
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
Priority claimed from CN202320339284.1U external-priority patent/CN219346283U/en
Priority claimed from CN202310160813.6A external-priority patent/CN118532636A/en
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP4669550A1 publication Critical patent/EP4669550A1/en
Pending legal-status Critical Current

Links

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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/26—Elongated lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like 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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—Attachment thereof
    • F21S41/295—Attachment thereof specially adapted to projection lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/50—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching 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
    • 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
    • F21S43/10—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
    • 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
    • F21S43/19—Attachment of light sources or lamp holders
    • F21S43/195—Details of lamp holders, terminals or connectors
    • 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
    • F21S43/2621—Refractors characterised by the properties of the light beam shaping surface
    • F21S43/26231—Refractors characterised by the properties of the light beam shaping surface collimating, focusing, condensing or projecting beams, e.g. projection lenses or Fresnel lenses
    • 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
    • F21S43/27—Attachment thereof
    • 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
    • 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
    • F21S43/401—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 the refractors and the reflectors being distinct parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • 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
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • 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
    • F21W2103/10—Position lights
    • 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
    • F21W2103/20—Direction indicator lights
    • 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
    • F21W2103/55—Daytime running lights [DRL]

Definitions

  • Embodiments of the present invention relate generally to the field of lighting or signalling, in particular to a light emitting device and a motor vehicle.
  • the main lamps of a motor vehicle are used to light up the road in front of the vehicle in low visibility or at night.
  • These main lamps are mainly used to produce lighting modes of two types: a low beam mode and a high beam mode.
  • the low beam mode the light beam has a very obvious cut-off line between light and dark, and can provide lighting without disturbing other road users.
  • the high beam mode a larger distance in front of the vehicle can be lit up.
  • reflectors are generally used to realize the low beam and high beam functions, with a low beam reflector and a high beam reflector being arranged in the vertical direction perpendicular to the horizontal emitting direction; as a result, the main lamp module has a larger size in the vertical direction (i.e. the vehicle height direction), and thus fails to meet customer demands.
  • An objective of the present invention is to solve or overcome at least one of the above and other problems and shortcomings in the prior art.
  • a light emitting device comprising: a first light emitting assembly for a first optical function, the first light emitting assembly comprising a first light source and a first reflector, the first reflector being configured to receive and reflect light from the first light source; a second light emitting assembly for a second optical function, the second light emitting assembly comprising a second light source and a second reflector, the second reflector being configured to receive and reflect light from the second light source; a lens which, in a main extension direction thereof, comprises a first projecting part and a second projecting part arranged adjacent to each other, the first projecting part being configured to project light from the first reflector, and the second projecting part being configured to project light from the second reflector; and a support, the support being configured to support the first light emitting assembly and the second light emitting assembly, such that the second light emitting assembly is, overall, located at one side of the first light emitting assembly in the main extension direction.
  • the first light emitting assembly and the second light emitting assembly are respectively supported on two opposite mounting surfaces of the support.
  • the support is Z-shaped overall, and comprises a middle part for separating the first light emitting assembly and the second light emitting assembly.
  • the support is formed as a single component.
  • the support is configured such that the first light source and the second light source are located at substantially the same horizontal height.
  • a focus region of the first projecting part is at or near a rear edge of a reflective face of the first reflector, and/or a focus region of the second projecting part is at or near a rear edge of a reflective face of the second reflector.
  • the first optical function and the second optical function respectively comprise one or more of a high beam function, a low beam function and a signalling function.
  • the light emitting device further comprises a third light emitting assembly, which is supported on the same mounting surface of the support as the first light emitting assembly; the third light emitting assembly comprises a third light source and a third reflector, wherein the third light source and the first light source are enabled in a mutually exclusive manner, the third reflector is located between the first reflector and the first projecting part of the lens, and the third light source is located between the first light source and the third reflector; and the third reflector is configured to reflect light from the third light source towards the first projecting part of the lens.
  • the third reflector and the first reflector are formed as a single component.
  • the lens is formed as a single component, and comprises an extension piece extending towards the interior of the light emitting device, the extension piece being engaged with the middle part of the support; the extension piece is provided with an engagement slot (631), the middle part (53) comprises an engagement piece (56), and the engagement piece is engaged in the engagement slot in a light output direction of the light emitting device.
  • the extension piece is also engaged with the first reflector or the second reflector.
  • the main extension direction is a horizontal direction; the first light emitting assembly and the second light emitting assembly are arranged horizontally.
  • two ends of the support are each provided with a slot, the slot having an opening substantially facing in a vertical direction, the vertical direction being perpendicular to the horizontal direction;
  • two ends of the lens each have a fixing part extending towards the interior of the light emitting device, and the fixing parts are engaged in the slots.
  • one end of the fixing part in the vertical direction abuts the bottom of the slot, and another end abuts the second reflector or the first reflector; the fixing part is provided with a protruding part extending out in the main extension direction, an inner wall of the slot is provided with a corresponding recess structure, and the protruding part is engaged in the corresponding recess structure.
  • embodiments further provide a motor vehicle comprising the light emitting device described above.
  • FIG. 1 shows schematically a perspective drawing of a light emitting device 1 according to an exemplary embodiment of the present invention
  • FIG. 1 shows schematically a bottom view of the light emitting device 1 according to an exemplary embodiment of the present invention
  • FIG. 50 shows schematically a perspective drawing of a support 50 according to an exemplary embodiment of the present invention
  • FIG. 1 shows schematically a perspective drawing of a first light emitting assembly 2 and a second light emitting assembly 3 according to an exemplary embodiment of the present invention
  • FIG. 1 shows schematically a sectional view of the light emitting device 1 in along line A-A;
  • FIG. 1 shows a perspective view of a light emitting device according to another embodiment of the present invention.
  • FIG. 1 shows a perspective view of the first light emitting assembly and second light emitting assembly in .
  • FIG. 1 shows schematically a perspective drawing of a light emitting device 1 according to an exemplary embodiment of the present invention; shows schematically a bottom view of the light emitting device 1 according to an exemplary embodiment of the present invention; shows schematically a perspective drawing of a support 50 according to an exemplary embodiment of the present invention; shows schematically a perspective drawing of a first light emitting assembly 2 and a second light emitting assembly 3 according to an exemplary embodiment of the present invention; and shows schematically a sectional view of the light emitting device 1 in along line A-A.
  • the light emitting device 1 comprises a first light emitting assembly 2 for a first optical function, a second light emitting assembly 3 for a second optical function, a support 50 and a lens 60, wherein the first light emitting assembly 2 comprises a first light source 11 and a first reflector 20, the first light source 11 emitting light for the first optical function towards the first reflector 20, and the first reflector 20 reflecting light from the first light source 11 towards a first projecting part 61 of the lens 60; and the second light emitting assembly 3 comprises a second light source 31 and a second reflector 40, the second light source 31 emitting light for the second optical function towards the second reflector 40, and the second reflector 40 reflecting light from the second light source 31 towards a second projecting part 62 of the lens 60.
  • the first optical function and second optical function respectively comprise one or more of a low beam function, a high beam function and a signalling function (including but not limited to a daytime running lamp function, a turn signal lamp function, a position lamp function, etc.); for example but without limitation, the first optical function comprises a high beam function and the second optical function comprises a low beam function, or the first optical function comprises a daytime running lamp function and the second optical function comprises a low beam function.
  • a signalling function including but not limited to a daytime running lamp function, a turn signal lamp function, a position lamp function, etc.
  • the lens 60 in a main extension direction thereof (the left-right direction in Figs. 1 and 2), comprises the first projecting part 61 and second projecting part 62 arranged adjacent to each other, wherein the first projecting part 61 is used to project light from the first reflector 20 to form a light beam for the first optical function, and the second projecting part 62 is used to project light from the second reflector 40 to form a light beam for the second optical function.
  • the lens 60 is formed as a single component, so the first projecting part 61 and second projecting part 62 are integrally formed.
  • the support 50 is used to support the first light emitting assembly 2 and the second light emitting assembly 3, such that the two assemblies are substantially arranged horizontally in the main extension direction of the lens; in other words, the second light emitting assembly 3 is, overall, located at one side of the first light emitting assembly 2 in the main extension direction of the lens.
  • the two light emitting assemblies are arranged horizontally in embodiments of the present invention, making it possible to greatly reduce the size of the light emitting device 1 in the vertical direction.
  • the support 50 comprises two opposite mounting surfaces, specifically a first mounting surface 51 and a second mounting surface 52, wherein the first mounting surface 51 is used to support the first light emitting assembly 2, and the second mounting surface 52 is used to support the second light emitting assembly 3.
  • the first light source 11 is mounted on a first printed circuit board 10, the first printed circuit board 10 being arranged between the first mounting surface 51 and the first reflector 20; the first printed circuit board 10 and the first reflector 20 are fixedly connected to the first mounting surface 51 by a suitable fixing means, for example but without limitation, by a threaded connection and/or a snap-fit connection.
  • the second light source 31 is mounted on a second printed circuit board 30, the second printed circuit board 30 being arranged between the second mounting surface 52 and the second reflector 40; the second printed circuit board 30 and the second reflector 40 are fixedly connected to the second mounting surface 52 by a suitable fixing means, for example but without limitation, by a threaded connection and/or a snap-fit connection.
  • An advantage of having the two light emitting assemblies supported on two opposite mounting surfaces of the support 50 is that, in the case where a light distribution of the first light emitting assembly 2 is located above a light distribution of the second light emitting assembly 3, light from the first light source 11 is reflected by the first reflector 20 therebelow and then projected by the lens 60, and the first optical function can have a wider beam pattern in the vertical direction; this is advantageous in the case where the first optical function requires a wider illumination range, for example but without limitation, in the case where the first optical function comprises the high beam function. If the first light emitting assembly 2 and the second light emitting assembly 3 were supported on the same mounting surface of the support 50, the first optical function would have a narrower beam pattern in the vertical direction, which would fail to meet the requirement for a wide illumination range.
  • the support 50 is Z-shaped overall; in other words, the first mounting surface 51 and the second mounting surface 52 are both embodied as a Z-shaped surface, with the first light emitting assembly 2 and the second light emitting assembly 3 being respectively supported in a left and a right L-shaped space of the Z-shaped support 50.
  • An advantage of the Z-shaped support 50 is that it can further compress the size of the light emitting device 1 in the vertical direction, so that it is more compact in the vertical direction.
  • the support 50 comprises a middle part 53, i.e. a bent part of the Z shape, which can also serve the function of separating the first light emitting assembly 2 and the second light emitting assembly 3, preventing interference of light of the two optical functions.
  • multiple fins 54 are formed on both the first mounting surface 51 and the second mounting surface 52 of the support 50, to increase the efficiency of heat dissipation.
  • the first reflector 20 comprises a first reflective cavity 21, a second reflective cavity 22 and a third reflective cavity 23, each reflective cavity being formed with multiple reflective faces arranged side by side, wherein light from the first reflective cavity 21 of the first reflector 20 is projected by a first segment 61A of the first projecting part 61 of the lens 60, light from the second reflective cavity 22 of the first reflector 20 is projected by a second segment 61B of the first projecting part 61 of the lens 60, and light from the third reflective cavity 23 of the first reflector 20 is projected by a third segment 61C of the first projecting part 61 of the lens 60.
  • a focus region of the first projecting part 61 of the lens 60 is at or near a rear edge of a reflective face of the first reflector 20; for example, a focus region of the first segment 61A of the first projecting part 61 is at or near a rear edge 21E of a reflective face of the first reflective cavity 21 of the first reflector 20, a focus region of the second segment 61B of the first projecting part 61 is at or near a rear edge 22E of a reflective face of the second reflective cavity 22 of the first reflector 20, and a focus region of the third segment 61C of the first projecting part 61 is at or near a rear edge 23E of a reflective face of the third reflective cavity 23 of the first reflector 20.
  • the support 50 further comprises a baffle 55 disposed between adjacent reflective cavities.
  • the second reflector 40 comprises a first reflective cavity 41, a second reflective cavity 42 and a third reflective cavity 43, each reflective cavity being formed with multiple reflective faces arranged side by side, wherein light from the first reflective cavity 41 of the second reflector 40 is projected by a first segment 62A of the second projecting part 62 of the lens 60, light from the second reflective cavity 42 of the second reflector 40 is projected by a second segment 62B of the second projecting part 62 of the lens 60, and light from the third reflective cavity 43 of the second reflector 40 is projected by a third segment 62C of the second projecting part 62 of the lens 60.
  • a focus region of the second projecting part 62 of the lens 60 is at or near a rear edge of a reflective face of the second reflector 40; for example, a focus region of the first segment 62A of the second projecting part 62 is at or near a rear edge 41E of a reflective face of the first reflective cavity 41 of the second reflector 40, a focus region of the second segment 62B of the second projecting part 62 is at or near a rear edge 42E of a reflective face of the second reflective cavity 42 of the second reflector 40, and a focus region of the third segment 62C of the second projecting part 62 is at or near a rear edge 43E of a reflective face of the third reflective cavity 43 of the second reflector 40.
  • the support 50 further comprises a baffle 55 disposed between adjacent reflective cavities.
  • the number of reflective cavities and the number of reflective faces of the first reflector 20 and the second reflector 40 are not limited to this, and may be set according to actual needs.
  • the light emitting device 1 further comprises a third light emitting assembly which is also supported on the first mounting surface 51 of the support 50; specifically, the third light emitting assembly comprises a third light source 12 and a third reflector 70, wherein the third light source 12 may be mounted on the first printed circuit board 10 together with the first light source 11, or may be mounted on a different circuit board, and is located between the first light source 11 and the third reflector 70.
  • the third reflector 70 is located between the first reflector 20 and the first projecting part 61 of the lens, and used for receiving light from the third light source 12 and reflecting this light towards the first projecting part 61 of the lens 60.
  • the third reflector 70 comprises a first reflective face 71, a second reflective face 72 and a third reflective face 73, wherein the first reflective face 71 reflects light towards the first segment 61A of the first projecting part, the second reflective face 72 reflects light towards the second segment 61B of the first projecting part, and the third reflective face 73 reflects light towards the third segment 61C of the first projecting part.
  • the third light source 12 and the first light source 11 are enabled in a mutually exclusive manner, the third light source 12 being able to provide background light or ambient light for the second optical function; specifically, when the second light source 31 for the second optical function is switched on and the first light source 11 for the first optical function is switched off, only part of a light exit surface of the light emitting device 1 is illuminated, but if the third light source 12 is switched on, the light thereof is reflected by the third reflector 70 and then projected by the first projecting part 61, such that the entire light exit surface of the light emitting device 1 is illuminated, considerably improving the appearance of the illumination effect.
  • the third reflector 70 and first reflector 20 are formed as a single component, to simplify the production process and increase efficiency.
  • the lens 60 may be fixedly connected to the support 50; for example, the lens 60 may be connected by screw-thread to the support 50 at two ends in the main extension direction thereof.
  • the lens 60 may further comprise an extension piece 63, which extends towards the interior of the light emitting device 1 and is used for engaging with the middle part 53 of the support 50.
  • the middle part 53 may comprise an engagement piece 56, while the extension piece 63 correspondingly comprises an engagement slot 631 (as shown in ); shows an enlarged schematic drawing of a partial structure in .
  • FIG. 1 shows a perspective view of a light emitting device 1 according to another embodiment of the present invention; shows a sectional view of the light emitting device 1 in along line B-B; shows an exploded drawing of the light emitting device 1 in ; shows a perspective view of the support 50 in ; shows a partial enlarged schematic drawing of region C in , and also shows schematically a virtual lens 60; and shows a perspective view of the first light emitting assembly 2 and second light emitting assembly 3 in .
  • another embodiment of the present application provides another light emitting device 1; this light emitting device 1 is essentially similar to the light emitting device in the embodiment described above, the main difference being that the mounting structure and manner of mounting of the lens 60 are different.
  • the lens 60 can be mounted to the support 50 in the direction from front to back, i.e. the lens 60 is mounted to the support 50 in the direction opposite to a light output direction X, and fixed in a threaded hole of the support 50 by means of a screw or bolt.
  • the lens 60 can be mounted to the support 50 in a vertical direction Z.
  • two ends of the support 50 are each provided with a slot 57, the slots 57 each having an opening substantially facing in the vertical direction Z; for example, the opening of the slot 57 faces upwards.
  • the vertical direction Z is perpendicular to a horizontal direction Y; the horizontal direction Y is also the main extension direction.
  • the light output direction X is perpendicular to the horizontal direction Y and the vertical direction Z; the light output direction X can refer to the main output direction of light.
  • two ends of the lens 60 each have a fixing part 67 extending towards the interior of the light emitting device 1, and the fixing parts 67 are engaged in the slots 57.
  • the overall light output direction of the light emitting device 1 is labelled X in the drawings, and extends towards the outside of the light emitting device 1.
  • the directions mentioned here are merely illustrations of approximate directions, from the angles of view in the drawings.
  • the horizontal direction Y is not strictly required to be absolutely horizontal, and need only be approximately horizontal; and the vertical direction Z is not strictly required to be absolutely vertical, and need only be approximately vertical.
  • one end of the fixing part 67 in the vertical direction Z e.g. a lower end
  • the other end of the fixing part 67 in the vertical direction Z e.g. an upper end
  • the opening of the slot 57 may also be configured to face downwards; the upper end of the fixing part 67 abuts the bottom of the slot 57, and the lower end of the fixing part 67 abuts the first reflector 20, such that the lens 60 is sandwiched between the first reflector 20 and the bottom of the slot 57.
  • the fixing parts 67 may also be provided with protruding parts 68, each extending out in the main extension direction Y.
  • An inner wall of the slot 57 may be provided with a corresponding recess structure, and the protruding part is engaged in the corresponding recess structure, such that the fixing part 67 is reliably fixed in the slot 57.
  • the first light source 11 in this embodiment is disposed on the first printed circuit board 10, the first printed circuit board 10 being mounted on the first mounting surface 51; and the second light source 31 is disposed on the second printed circuit board 30, the second printed circuit board 30 being mounted on the second mounting surface 52.
  • the first mounting surface 51 and second mounting surface 52 are arranged at the left and right in the horizontal direction Y, the first mounting surface 51 and second mounting surface 52 being located at different heights, and facing in opposite directions; for example, the first mounting surface 51 faces downwards, and the second mounting surface 52 faces upwards, such that the first light source 11 emits light downwards, and the second light source 31 emits light upwards.
  • Embodiments of the present invention further provide a motor vehicle comprising a light emitting device 1 as described in any one of the embodiments above.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The application provides a light emitting device (1), comprising: a first light emitting assembly (2) for a first optical function, comprising a first light source (11) and a first reflector (20) receiving and reflecting light from the first light source (11); a second light emitting assembly (3) for a second optical function, comprising a second light source (31) and a second reflector (40) receiving and reflecting light from the second light source (31); a lens (60) comprising a first projecting part (61) and a second projecting part (62) arranged adjacent to each other in a main extension direction thereof, the first projecting part (61) projecting light from the first reflector (20), and the second projecting part (62) projecting light from the second reflector (40); and a support (50), configured to support the first light emitting assembly (2) and the second light emitting assembly (3), such that the second light emitting assembly (3) is, overall, located at one side of the first light emitting assembly (2) in the main extension direction.

Description

    Light-emitting device and motor vehicle
  • Embodiments of the present invention relate generally to the field of lighting or signalling, in particular to a light emitting device and a motor vehicle.
    •
  • The main lamps of a motor vehicle, also called headlamps, are used to light up the road in front of the vehicle in low visibility or at night. These main lamps are mainly used to produce lighting modes of two types: a low beam mode and a high beam mode. In the low beam mode, the light beam has a very obvious cut-off line between light and dark, and can provide lighting without disturbing other road users. In the high beam mode, a larger distance in front of the vehicle can be lit up. These two modes can be switched manually or automatically according to actual circumstances.
  • In the prior art, reflectors are generally used to realize the low beam and high beam functions, with a low beam reflector and a high beam reflector being arranged in the vertical direction perpendicular to the horizontal emitting direction; as a result, the main lamp module has a larger size in the vertical direction (i.e. the vehicle height direction), and thus fails to meet customer demands.
    •  Summary of the Invention
  • An objective of the present invention is to solve or overcome at least one of the above and other problems and shortcomings in the prior art.
  • According to one aspect of the present invention, a light emitting device is provided, comprising: a first light emitting assembly for a first optical function, the first light emitting assembly comprising a first light source and a first reflector, the first reflector being configured to receive and reflect light from the first light source; a second light emitting assembly for a second optical function, the second light emitting assembly comprising a second light source and a second reflector, the second reflector being configured to receive and reflect light from the second light source; a lens which, in a main extension direction thereof, comprises a first projecting part and a second projecting part arranged adjacent to each other, the first projecting part being configured to project light from the first reflector, and the second projecting part being configured to project light from the second reflector; and a support, the support being configured to support the first light emitting assembly and the second light emitting assembly, such that the second light emitting assembly is, overall, located at one side of the first light emitting assembly in the main extension direction.
  • In some embodiments, the first light emitting assembly and the second light emitting assembly are respectively supported on two opposite mounting surfaces of the support.
  • In some embodiments, the support is Z-shaped overall, and comprises a middle part for separating the first light emitting assembly and the second light emitting assembly.
  • In some embodiments, the support is formed as a single component.
  • In some embodiments, the support is configured such that the first light source and the second light source are located at substantially the same horizontal height.
  • In some embodiments, a focus region of the first projecting part is at or near a rear edge of a reflective face of the first reflector, and/or a focus region of the second projecting part is at or near a rear edge of a reflective face of the second reflector.
  • In some embodiments, the first optical function and the second optical function respectively comprise one or more of a high beam function, a low beam function and a signalling function.
  • In some embodiments, the light emitting device further comprises a third light emitting assembly, which is supported on the same mounting surface of the support as the first light emitting assembly; the third light emitting assembly comprises a third light source and a third reflector, wherein the third light source and the first light source are enabled in a mutually exclusive manner, the third reflector is located between the first reflector and the first projecting part of the lens, and the third light source is located between the first light source and the third reflector; and the third reflector is configured to reflect light from the third light source towards the first projecting part of the lens.
  • In some embodiments, the third reflector and the first reflector are formed as a single component.
  • In some embodiments, the lens is formed as a single component, and comprises an extension piece extending towards the interior of the light emitting device, the extension piece being engaged with the middle part of the support; the extension piece is provided with an engagement slot (631), the middle part (53) comprises an engagement piece (56), and the engagement piece is engaged in the engagement slot in a light output direction of the light emitting device.
  • In some embodiments, the extension piece is also engaged with the first reflector or the second reflector.
  • In some embodiments, the main extension direction is a horizontal direction;
    the first light emitting assembly and the second light emitting assembly are arranged horizontally.
  • In some embodiments, two ends of the support are each provided with a slot, the slot having an opening substantially facing in a vertical direction, the vertical direction being perpendicular to the horizontal direction;
    two ends of the lens each have a fixing part extending towards the interior of the light emitting device, and the fixing parts are engaged in the slots.
  • In some embodiments, one end of the fixing part in the vertical direction abuts the bottom of the slot, and another end abuts the second reflector or the first reflector;
    the fixing part is provided with a protruding part extending out in the main extension direction, an inner wall of the slot is provided with a corresponding recess structure, and the protruding part is engaged in the corresponding recess structure.
  • According to another aspect of the present invention, embodiments further provide a motor vehicle comprising the light emitting device described above.
  • Other objectives and advantages of the present invention will become obvious through the following detailed description of the invention with reference to the drawings, which can also aid comprehensive understanding of the invention.
    •  Brief Description of the Drawings
  • These and/or other aspects, features and advantages of the present invention will become obvious and easy to understand through the following description of illustrative embodiments in conjunction with the accompanying drawings, wherein:
    • Fig.1
  • shows schematically a perspective drawing of a light emitting device 1 according to an exemplary embodiment of the present invention;
    • Fig.2
  • shows schematically a bottom view of the light emitting device 1 according to an exemplary embodiment of the present invention;
    • Fig.3
  • shows schematically a perspective drawing of a support 50 according to an exemplary embodiment of the present invention;
    • Fig.4
  • shows schematically a perspective drawing of a first light emitting assembly 2 and a second light emitting assembly 3 according to an exemplary embodiment of the present invention;
    • Fig.5
  • shows schematically a sectional view of the light emitting device 1 in along line A-A;
    • Fig.6
  • shows an enlarged schematic drawing of a partial structure in ;
    • Fig.7
  • shows a perspective view of a light emitting device according to another embodiment of the present invention;
    • Fig.8
  • shows a sectional view of the light emitting device in along line B-B;
    • Fig.9
  • shows an exploded drawing of the light emitting device in ;
    • Fig.10
  • shows a perspective view of the support in ;
    • Fig.11
  • shows a partial enlarged schematic drawing of region C in ;
    • Fig.12
  • shows a perspective view of the first light emitting assembly and second light emitting assembly in .
    •  Detailed Description of Embodiments
  • Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. In this description, the same or similar components are indicated by the same or similar reference numerals. The following explanation of embodiments of the present invention with reference to the accompanying drawings is intended to explain the overall disclosed concept of the present invention, and should not be interpreted as a limitation of the present invention.
  • In addition, in the following detailed description, for ease of explanation, many specific details are expounded to provide a comprehensive understanding of the embodiments of the present invention. However, it is obvious that one or more embodiments may also be implemented without these specific details. In other cases, well-known structures and devices are shown in the form of illustrations to simplify the drawings.
  • shows schematically a perspective drawing of a light emitting device 1 according to an exemplary embodiment of the present invention; shows schematically a bottom view of the light emitting device 1 according to an exemplary embodiment of the present invention; shows schematically a perspective drawing of a support 50 according to an exemplary embodiment of the present invention; shows schematically a perspective drawing of a first light emitting assembly 2 and a second light emitting assembly 3 according to an exemplary embodiment of the present invention; and shows schematically a sectional view of the light emitting device 1 in along line A-A.
  • The light emitting device 1 according to embodiments of the present invention comprises
    a first light emitting assembly 2 for a first optical function, a second light emitting assembly 3 for a second optical function, a support 50 and a lens 60, wherein the first light emitting assembly 2 comprises a first light source 11 and a first reflector 20, the first light source 11 emitting light for the first optical function towards the first reflector 20, and the first reflector 20 reflecting light from the first light source 11 towards a first projecting part 61 of the lens 60; and the second light emitting assembly 3 comprises a second light source 31 and a second reflector 40, the second light source 31 emitting light for the second optical function towards the second reflector 40, and the second reflector 40 reflecting light from the second light source 31 towards a second projecting part 62 of the lens 60.
  • In embodiments of the present invention, the first optical function and second optical function respectively comprise one or more of a low beam function, a high beam function and a signalling function (including but not limited to a daytime running lamp function, a turn signal lamp function, a position lamp function, etc.); for example but without limitation, the first optical function comprises a high beam function and the second optical function comprises a low beam function, or the first optical function comprises a daytime running lamp function and the second optical function comprises a low beam function.
  • The lens 60, in a main extension direction thereof (the left-right direction in Figs. 1 and 2), comprises the first projecting part 61 and second projecting part 62 arranged adjacent to each other, wherein the first projecting part 61 is used to project light from the first reflector 20 to form a light beam for the first optical function, and the second projecting part 62 is used to project light from the second reflector 40 to form a light beam for the second optical function. Preferably, the lens 60 is formed as a single component, so the first projecting part 61 and second projecting part 62 are integrally formed.
  • The support 50 is used to support the first light emitting assembly 2 and the second light emitting assembly 3, such that the two assemblies are substantially arranged horizontally in the main extension direction of the lens; in other words, the second light emitting assembly 3 is, overall, located at one side of the first light emitting assembly 2 in the main extension direction of the lens. In contrast to having two light emitting assemblies for different optical functions arranged in the vertical direction (i.e. the up-down direction in ) in the prior art, the two light emitting assemblies are arranged horizontally in embodiments of the present invention, making it possible to greatly reduce the size of the light emitting device 1 in the vertical direction.
  • Furthermore, as shown in Figs. 3 and 4, the support 50 comprises two opposite mounting surfaces, specifically a first mounting surface 51 and a second mounting surface 52, wherein the first mounting surface 51 is used to support the first light emitting assembly 2, and the second mounting surface 52 is used to support the second light emitting assembly 3. Specifically, the first light source 11 is mounted on a first printed circuit board 10, the first printed circuit board 10 being arranged between the first mounting surface 51 and the first reflector 20; the first printed circuit board 10 and the first reflector 20 are fixedly connected to the first mounting surface 51 by a suitable fixing means, for example but without limitation, by a threaded connection and/or a snap-fit connection. The second light source 31 is mounted on a second printed circuit board 30, the second printed circuit board 30 being arranged between the second mounting surface 52 and the second reflector 40; the second printed circuit board 30 and the second reflector 40 are fixedly connected to the second mounting surface 52 by a suitable fixing means, for example but without limitation, by a threaded connection and/or a snap-fit connection.
  • An advantage of having the two light emitting assemblies supported on two opposite mounting surfaces of the support 50 is that, in the case where a light distribution of the first light emitting assembly 2 is located above a light distribution of the second light emitting assembly 3, light from the first light source 11 is reflected by the first reflector 20 therebelow and then projected by the lens 60, and the first optical function can have a wider beam pattern in the vertical direction; this is advantageous in the case where the first optical function requires a wider illumination range, for example but without limitation, in the case where the first optical function comprises the high beam function. If the first light emitting assembly 2 and the second light emitting assembly 3 were supported on the same mounting surface of the support 50, the first optical function would have a narrower beam pattern in the vertical direction, which would fail to meet the requirement for a wide illumination range.
  • Preferably, as shown in , the support 50 is Z-shaped overall; in other words, the first mounting surface 51 and the second mounting surface 52 are both embodied as a Z-shaped surface, with the first light emitting assembly 2 and the second light emitting assembly 3 being respectively supported in a left and a right L-shaped space of the Z-shaped support 50. An advantage of the Z-shaped support 50 is that it can further compress the size of the light emitting device 1 in the vertical direction, so that it is more compact in the vertical direction. The support 50 comprises a middle part 53, i.e. a bent part of the Z shape, which can also serve the function of separating the first light emitting assembly 2 and the second light emitting assembly 3, preventing interference of light of the two optical functions. Furthermore, multiple fins 54 are formed on both the first mounting surface 51 and the second mounting surface 52 of the support 50, to increase the efficiency of heat dissipation.
  • Preferably, as shown in , the Z-shaped support 50 is further configured such that the first light source 11 or the first printed circuit board 10 and the second light source 31 or the second printed circuit board 30 are at almost the same horizontal height; this can further reduce the size of the light emitting device 1 in the vertical direction.
  • Preferably, the support 50 is formed as a single component, to simplify the process and increase production efficiency.
  • As shown in Figs. 2 and 4, regarding the first light emitting assembly 2, the first reflector 20 comprises a first reflective cavity 21, a second reflective cavity 22 and a third reflective cavity 23, each reflective cavity being formed with multiple reflective faces arranged side by side, wherein light from the first reflective cavity 21 of the first reflector 20 is projected by a first segment 61A of the first projecting part 61 of the lens 60, light from the second reflective cavity 22 of the first reflector 20 is projected by a second segment 61B of the first projecting part 61 of the lens 60, and light from the third reflective cavity 23 of the first reflector 20 is projected by a third segment 61C of the first projecting part 61 of the lens 60. In order to obtain a clear cut-off line in the light distribution of the first optical function, a focus region of the first projecting part 61 of the lens 60 is at or near a rear edge of a reflective face of the first reflector 20; for example, a focus region of the first segment 61A of the first projecting part 61 is at or near a rear edge 21E of a reflective face of the first reflective cavity 21 of the first reflector 20, a focus region of the second segment 61B of the first projecting part 61 is at or near a rear edge 22E of a reflective face of the second reflective cavity 22 of the first reflector 20, and a focus region of the third segment 61C of the first projecting part 61 is at or near a rear edge 23E of a reflective face of the third reflective cavity 23 of the first reflector 20. Furthermore, in order to prevent interference of light rays from different reflective cavities, the support 50 further comprises a baffle 55 disposed between adjacent reflective cavities.
  • As shown in Figs. 1, 2 and 4, regarding the second light emitting assembly 3, the second reflector 40 comprises a first reflective cavity 41, a second reflective cavity 42 and a third reflective cavity 43, each reflective cavity being formed with multiple reflective faces arranged side by side, wherein light from the first reflective cavity 41 of the second reflector 40 is projected by a first segment 62A of the second projecting part 62 of the lens 60, light from the second reflective cavity 42 of the second reflector 40 is projected by a second segment 62B of the second projecting part 62 of the lens 60, and light from the third reflective cavity 43 of the second reflector 40 is projected by a third segment 62C of the second projecting part 62 of the lens 60. In order to obtain a clear cut-off line in the light distribution of the second optical function, a focus region of the second projecting part 62 of the lens 60 is at or near a rear edge of a reflective face of the second reflector 40; for example, a focus region of the first segment 62A of the second projecting part 62 is at or near a rear edge 41E of a reflective face of the first reflective cavity 41 of the second reflector 40, a focus region of the second segment 62B of the second projecting part 62 is at or near a rear edge 42E of a reflective face of the second reflective cavity 42 of the second reflector 40, and a focus region of the third segment 62C of the second projecting part 62 is at or near a rear edge 43E of a reflective face of the third reflective cavity 43 of the second reflector 40. Furthermore, in order to prevent interference of light rays from different reflective cavities, the support 50 further comprises a baffle 55 disposed between adjacent reflective cavities.
  • It will be understood that the number of reflective cavities and the number of reflective faces of the first reflector 20 and the second reflector 40 are not limited to this, and may be set according to actual needs.
  • Furthermore, as shown in , the light emitting device 1 further comprises a third light emitting assembly which is also supported on the first mounting surface 51 of the support 50; specifically, the third light emitting assembly comprises a third light source 12 and a third reflector 70, wherein the third light source 12 may be mounted on the first printed circuit board 10 together with the first light source 11, or may be mounted on a different circuit board, and is located between the first light source 11 and the third reflector 70. The third reflector 70 is located between the first reflector 20 and the first projecting part 61 of the lens, and used for receiving light from the third light source 12 and reflecting this light towards the first projecting part 61 of the lens 60. As shown in , the third reflector 70 comprises a first reflective face 71, a second reflective face 72 and a third reflective face 73, wherein the first reflective face 71 reflects light towards the first segment 61A of the first projecting part, the second reflective face 72 reflects light towards the second segment 61B of the first projecting part, and the third reflective face 73 reflects light towards the third segment 61C of the first projecting part.
  • The third light source 12 and the first light source 11 are enabled in a mutually exclusive manner, the third light source 12 being able to provide background light or ambient light for the second optical function; specifically, when the second light source 31 for the second optical function is switched on and the first light source 11 for the first optical function is switched off, only part of a light exit surface of the light emitting device 1 is illuminated, but if the third light source 12 is switched on, the light thereof is reflected by the third reflector 70 and then projected by the first projecting part 61, such that the entire light exit surface of the light emitting device 1 is illuminated, considerably improving the appearance of the illumination effect.
  • Preferably, the third reflector 70 and first reflector 20 are formed as a single component, to simplify the production process and increase efficiency.
  • Furthermore, as shown in Figs. 1 and 3, the lens 60 may be fixedly connected to the support 50; for example, the lens 60 may be connected by screw-thread to the support 50 at two ends in the main extension direction thereof. In addition, at an upper position between the first projecting part 61 and the second projecting part 62, the lens 60 may further comprise an extension piece 63, which extends towards the interior of the light emitting device 1 and is used for engaging with the middle part 53 of the support 50. Specifically, the middle part 53 may comprise an engagement piece 56, while the extension piece 63 correspondingly comprises an engagement slot 631 (as shown in ); shows an enlarged schematic drawing of a partial structure in . The engagement slot 631 may be substantially U-shaped; when the lens 60 is installed, the engagement piece 56 can engage in the engagement slot substantially in a light output direction of the light emitting device 1, thus further securing the lens 60. Additionally, as shown in , the extension piece 63 may also engage with the second reflector 40. It will be understood that the extension piece 63 could also be disposed at a position below the lens 60; correspondingly, the engagement piece 56 could also be disposed below the middle part 53, and the extension piece 63 could also be engaged with the first reflector 10.
  • shows a perspective view of a light emitting device 1 according to another embodiment of the present invention; shows a sectional view of the light emitting device 1 in along line B-B; shows an exploded drawing of the light emitting device 1 in ; shows a perspective view of the support 50 in ; shows a partial enlarged schematic drawing of region C in , and also shows schematically a virtual lens 60; and shows a perspective view of the first light emitting assembly 2 and second light emitting assembly 3 in .
  • As shown in Figs. 7 – 12, another embodiment of the present application provides another light emitting device 1; this light emitting device 1 is essentially similar to the light emitting device in the embodiment described above, the main difference being that the mounting structure and manner of mounting of the lens 60 are different. In the embodiment above, as shown in , the lens 60 can be mounted to the support 50 in the direction from front to back, i.e. the lens 60 is mounted to the support 50 in the direction opposite to a light output direction X, and fixed in a threaded hole of the support 50 by means of a screw or bolt. In this embodiment, the lens 60 can be mounted to the support 50 in a vertical direction Z.
  • Specifically, two ends of the support 50 are each provided with a slot 57, the slots 57 each having an opening substantially facing in the vertical direction Z; for example, the opening of the slot 57 faces upwards. The vertical direction Z is perpendicular to a horizontal direction Y; the horizontal direction Y is also the main extension direction. The light output direction X is perpendicular to the horizontal direction Y and the vertical direction Z; the light output direction X can refer to the main output direction of light. Correspondingly, two ends of the lens 60 each have a fixing part 67 extending towards the interior of the light emitting device 1, and the fixing parts 67 are engaged in the slots 57. It is worth explaining that the overall light output direction of the light emitting device 1 is labelled X in the drawings, and extends towards the outside of the light emitting device 1. The directions mentioned here are merely illustrations of approximate directions, from the angles of view in the drawings. In the present application, the horizontal direction Y is not strictly required to be absolutely horizontal, and need only be approximately horizontal; and the vertical direction Z is not strictly required to be absolutely vertical, and need only be approximately vertical.
  • Additionally, one end of the fixing part 67 in the vertical direction Z, e.g. a lower end, abuts the bottom of the slot 57; and the other end of the fixing part 67 in the vertical direction Z, e.g. an upper end, abuts the second reflector 40, such that the lens 60 is sandwiched between the second reflector 40 and the bottom of the slot 57. In some embodiments, the opening of the slot 57 may also be configured to face downwards; the upper end of the fixing part 67 abuts the bottom of the slot 57, and the lower end of the fixing part 67 abuts the first reflector 20, such that the lens 60 is sandwiched between the first reflector 20 and the bottom of the slot 57.
  • The fixing parts 67 may also be provided with protruding parts 68, each extending out in the main extension direction Y. An inner wall of the slot 57 may be provided with a corresponding recess structure, and the protruding part is engaged in the corresponding recess structure, such that the fixing part 67 is reliably fixed in the slot 57.
  • Similar to the embodiments shown in Figs. 1 – 6, the first light source 11 in this embodiment is disposed on the first printed circuit board 10, the first printed circuit board 10 being mounted on the first mounting surface 51; and the second light source 31 is disposed on the second printed circuit board 30, the second printed circuit board 30 being mounted on the second mounting surface 52. The first mounting surface 51 and second mounting surface 52 are arranged at the left and right in the horizontal direction Y, the first mounting surface 51 and second mounting surface 52 being located at different heights, and facing in opposite directions; for example, the first mounting surface 51 faces downwards, and the second mounting surface 52 faces upwards, such that the first light source 11 emits light downwards, and the second light source 31 emits light upwards.
  • Embodiments of the present invention further provide a motor vehicle comprising a light emitting device 1 as described in any one of the embodiments above.
  • Although the present invention has been explained in conjunction with the drawings, the embodiments disclosed in the drawings are intended to provide an exemplary illustration of preferred embodiments of the present invention, and must not be interpreted as a limitation of the present invention. The dimensional proportions in the drawings are merely schematic, and must not be interpreted as a limitation of the present invention.
  • Although some embodiments of the overall concept of the present invention have been shown and explained, those skilled in the art will understand that changes may be made to these embodiments without departing from the principles and spirit of the overall disclosed concept. The scope of the present invention is defined by the claims and their equivalents.
    •

Claims (15)

  1. Light emitting device (1), characterized by comprising:
    a first light emitting assembly (2) for a first optical function, the first light emitting assembly (2) comprising a first light source (11) and a first reflector (20), the first reflector (20) being configured to receive and reflect light from the first light source (11);
    a second light emitting assembly (3) for a second optical function, the second light emitting assembly (3) comprising a second light source (31) and a second reflector (40), the second reflector (40) being configured to receive and reflect light from the second light source (31);
    a lens (60) comprising a first projecting part (61) and a second projecting part (62) arranged adjacent to each other in a main extension direction thereof, the first projecting part (61) being configured to project light from the first reflector (20), and the second projecting part (62) being configured to project light from the second reflector (40);
    a support (50), the support (50) being configured to support the first light emitting assembly (2) and the second light emitting assembly (3), such that the second light emitting assembly (3) is, overall, located at one side of the first light emitting assembly (2) in the main extension direction.
  2. Light emitting device (1) according to Claim 1, characterized in that
    the first light emitting assembly (2) and the second light emitting assembly (3) are respectively supported on two opposite mounting surfaces of the support (50).
  3. Light emitting device (1) according to Claim 2, characterized in that
    the support is Z-shaped overall, and comprises a middle part (53) for separating the first light emitting assembly (2) and the second light emitting assembly (3).
  4. Light emitting device (1) according to Claim 3, characterized in that the support (50) is formed as a single component.
  5. Light emitting device (1) according to Claim 3, characterized in that the support (50) is configured such that the first light source (11) and the second light source (31) are located at substantially the same horizontal height.
  6. Light emitting device (1) according to any one of Claims 1 to 5, characterized in that a focus region of the first projecting part (61) is at or near a rear edge of a reflective face of the first reflector (20), and/or a focus region of the second projecting part (62) is at or near a rear edge of a reflective face of the second reflector (40).
  7. Light emitting device (1) according to Claim 6, characterized in that the first optical function and the second optical function respectively comprise one or more of a high beam function, a low beam function and a signalling function.
  8. Light emitting device (1) according to any one of Claims 1 to 5, characterized by further comprising a third light emitting assembly, which is supported on the same mounting surface of the support (50) as the first light emitting assembly (2);
    the third light emitting assembly comprises a third light source (12) and a third reflector (70), wherein the third light source (12) and the first light source (11) are enabled in a mutually exclusive manner, the third reflector (70) is located between the first reflector (20) and the first projecting part (61) of the lens (60), and the third light source (12) is located between the first light source (11) and the third reflector (70);
    the third reflector (70) is configured to reflect light from the third light source (12) towards the first projecting part (61) of the lens (60).
  9. Light emitting device (1) according to Claim 8, characterized in that the third reflector (70) and the first reflector (20) are formed as a single component.
  10. Light emitting device (1) according to any one of Claims 3 to 5, characterized in that the lens (60) is formed as a single component, and comprises an extension piece (63) extending towards the interior of the light emitting device (1), the extension piece (63) being engaged with the middle part (53) of the support (50); the extension piece is provided with an engagement slot (631), the middle part (53) comprises an engagement piece (56), and the engagement piece is engaged in the engagement slot in a light output direction of the light emitting device.
  11. Light emitting device (1) according to Claim 10, characterized in that the extension piece (63) is also engaged with the first reflector (20) or the second reflector (40).
  12. Light emitting device according to any one of Claims 1 to 5, characterized in that the main extension direction (Y) is a horizontal direction;
    the first light emitting assembly (2) and the second light emitting assembly (3) are arranged horizontally.
  13. Light emitting device (1) according to Claim 12, characterized in that two ends of the support (50) are each provided with a slot (57), the slot having an opening substantially facing in a vertical direction (Z), the vertical direction being perpendicular to the horizontal direction;
    two ends of the lens (60) each have a fixing part (67) extending towards the interior of the light emitting device, and the fixing parts are engaged in the slots.
  14. Light emitting device according to Claim 13, characterized in that one end of the fixing part in the vertical direction abuts the bottom of the slot, and another end abuts the second reflector (40) or the first reflector (20);
    the fixing part is provided with a protruding part (68) extending out in the main extension direction, an inner wall of the slot (57) is provided with a corresponding recess structure, and the protruding part is engaged in the corresponding recess structure.
  15. Motor vehicle, characterized by comprising the light emitting device (1) according to any one of Claims 1 to 14.
EP24707485.9A 2023-02-23 2024-02-23 LIGHT EMISSIONING DEVICE AND MOTOR VEHICLE Pending EP4669550A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN202320339284.1U CN219346283U (en) 2023-02-23 2023-02-23 Lighting device and motor vehicle
CN202310160813.6A CN118532636A (en) 2023-02-23 2023-02-23 Lighting device and motor vehicle
PCT/EP2024/054637 WO2024175766A1 (en) 2023-02-23 2024-02-23 Light-emitting device and motor vehicle

Publications (1)

Publication Number Publication Date
EP4669550A1 true EP4669550A1 (en) 2025-12-31

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ID=90057493

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Application Number Title Priority Date Filing Date
EP24707485.9A Pending EP4669550A1 (en) 2023-02-23 2024-02-23 LIGHT EMISSIONING DEVICE AND MOTOR VEHICLE

Country Status (2)

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EP (1) EP4669550A1 (en)
WO (1) WO2024175766A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2982006B1 (en) * 2011-09-13 2018-04-27 Valeo Vision OPTICAL MODULE WITH COMMON REFERENCE FOR LIGHTING AND / OR SIGNALING OF A MOTOR VEHICLE
JP2015037037A (en) * 2013-08-13 2015-02-23 スタンレー電気株式会社 Vehicle headlamp
US11168858B2 (en) * 2018-06-01 2021-11-09 Ichikoh Industries, Ltd. Vehicular lamp
FR3103877B1 (en) * 2019-11-28 2022-07-08 Valeo Vision Optical element and light module of a motor vehicle equipped with such an optical element
FR3118122B1 (en) * 2020-12-18 2023-02-24 Valeo Vision Light module of a motor vehicle lighting device
WO2023274897A1 (en) * 2021-06-30 2023-01-05 Valeo Vision Light-emitting module and vehicle
FR3124846B1 (en) * 2021-07-01 2023-06-30 Valeo Vision Motor vehicle light module comprising a low wall for positioning and/or fixing an optical device

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