EP3553371A1 - Élément lumineux pour lampes de véhicule automobile comprenant un guide de lumière en forme de plaque et véhicule automobile équipé d'un tel élément lumineux - Google Patents

Élément lumineux pour lampes de véhicule automobile comprenant un guide de lumière en forme de plaque et véhicule automobile équipé d'un tel élément lumineux Download PDF

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Publication number
EP3553371A1
EP3553371A1 EP18167112.4A EP18167112A EP3553371A1 EP 3553371 A1 EP3553371 A1 EP 3553371A1 EP 18167112 A EP18167112 A EP 18167112A EP 3553371 A1 EP3553371 A1 EP 3553371A1
Authority
EP
European Patent Office
Prior art keywords
light
light guide
luminous
illuminant
illuminant according
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.)
Withdrawn
Application number
EP18167112.4A
Other languages
German (de)
English (en)
Inventor
Marco Vollmer
Andreas Heller
Albert EDENBICHLER
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.)
Odelo GmbH
Original Assignee
Odelo GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Odelo GmbH filed Critical Odelo GmbH
Priority to EP18167112.4A priority Critical patent/EP3553371A1/fr
Publication of EP3553371A1 publication Critical patent/EP3553371A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
    • 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
    • F21S43/19—Attachment of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/247—Light guides with a single light source being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • 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

Definitions

  • the invention relates to a lighting device for vehicle lamps according to the preamble of claim 1 and a vehicle lamp equipped with such a lighting device according to the preamble of claim 19.
  • the invention is concerned with the creation of an appearance of an OLED forming bulb for use in vehicle lights.
  • a light embodied, for example, as a vehicle lamp comprises, for example, a luminaire interior substantially enclosed by a luminaire housing and a lens, and at least one illuminant for at least one light function of the vehicle luminaire housed therein and comprising at least one light source.
  • a luminaire fulfills one or more tasks or functions.
  • a light function of the luminaire is provided.
  • Light functions are, for example, in a lamp designed as a vehicle lamp in one embodiment as a headlamp a function illuminating the road, or in a configuration as a signal light a signal function, such as a Wiederholblinklichtfunktion to turn signal or a brake light function to indicate a braking action, or.
  • a limiting light function such as a taillight function, to ensure visibility of the vehicle during the day and / or night, such as in a taillight or daytime running light configuration.
  • vehicle lights are thesselbug, on the vehicle flanks and / or on the side mirrors arranged flashing lights, exit lights, such as ambient lighting, marker lights, brake lights, fog lamps, reversing lights, and typically high set third brake lights, so-called Central, High-Mounted Braking lights, daytime running lights, headlamps and fog lights used as turning or cornering lights, as well as combinations thereof.
  • Each light function of a vehicle lamp must fulfill an example prescribed by law light distribution.
  • the light distribution sets at least to be observed, colloquially known as brightness luminous flux in at least to be observed solid angle ranges.
  • vehicle lights are thesselbug, on the vehicle flanks and / or on the side mirrors and arranged at the rear of vehicle rear lights, exit lights, such as ambient lighting, marker lights, brake lights, fog lamps, reversing lights, and typically high set third brake lights, so-called Central, High-Mounted Braking lights, daytime running lights, headlamps and fog lights used as turning or cornering lights, as well as combinations thereof.
  • Such a combination is realized, for example, regularly in the known taillights. These include, for example, repeating flashing lights, marker lights, brake lights, fog lights and reversing lights are used to name just one of many realized in tail lights combinations. Neither does this enumeration claim to be complete, nor does this mean that in a tail light all the aforementioned lights must be combined. Thus, for example, only two or three of the mentioned or else other lights in a common luminaire housing a tail light be combined.
  • Inorganic light emitting diodes consist of at least one light emitting diode semiconductor chip, short LED chip, and at least one, for example, molded by injection molding, the at least one LED chip in whole or in part enveloping primary optics.
  • Vehicle lights are also known in which pure LED chips are used without molded primary optics.
  • An organic light-emitting diode is a luminous thin-film component made of organic semiconducting materials with at least one emitter layer enclosed between electrically conductive, for example metallic layers for anode and cathode.
  • the thickness or, in other words, the thickness of the layers is on the order of about 100 nm. Typically, depending on the structure, it is 100 nm to 500 nm.
  • the layers of an OLED are successively applied to a substrate which, together with an encapsulation applied to the uppermost layer, protects the layers of the OLED against water, oxygen and against other environmental influences, such as scratch damage and / or pressure loading.
  • OLEDs do not require monocrystalline materials. Compared to LEDs, OLEDs can therefore be produced using inexpensive thin-film technology. OLEDs thereby make it possible to produce flat light sources which, on the one hand, are very thin and, on the other hand, have a particularly homogeneous appearance when they are visible through the lens of a vehicle light and are illuminated homogeneously when switched on. In addition, OLEDs have a similarly high efficiency in the conversion of electric current into visible to the human eye light, such as LEDs.
  • OLEDs have reduced temperature resistance compared to LEDs and their reduced resistance to environmental influences, in particular moisture and atmospheric oxygen. Both lead to a limited lifetime of OLEDs.
  • OLEDs as light sources in the automotive sector is still relatively new. So far there is only a wealth of experience of a few years - especially in the field of outdoor lighting, since due to adverse environmental conditions due increased demands on technology. Therefore, the manufacturing processes and the quality of these OLEDs are not yet fully developed and are therefore, in particular with regard to vehicle applications in a partially fundamental optimization and revision phase.
  • OLEDs In order to be used in vehicle lights, OLEDs must be placed on vehicle components of and within vehicle lights and during their development, for example by shaker, chemical and mechanical exposure and climate chamber simulated and formulated in the form of technical requirements conditions of use with respect to thermal, mechanical and other, even combined environmental pollution , such as noxious gas, moisture, moisture together with heat, meet.
  • a major challenge for the OLEDs is the influence of moisture formed by water, water vapor, water molecules. This ensures, in particular in combination with high temperatures, that defects in the encapsulation and / or sealing of the OLED to the organic layers, among other water molecules which irreversibly damage the organic layers and lead to a failure or partial failure of the emitter layer. This can also be simulated in the lifetime for components in vehicle applications imaging experiments. In a test of such a test equipped with a light source with at least one OLED as a light source vehicle lamp is exposed to an 85 ° C warm ambient temperature and a relative humidity of 85% for several hours. In the case of inadequate encapsulation, dark spots are dark spots or spots in the luminous area that appear due to the water molecules that diffuse at encapsulation faults. As these occur due to the encapsulation imperfections, over time more and more water can get through and thereby grow and / or enlarge the dark spot with time.
  • pixel shrinkage a phenomenon known as pixel shrinkage (pixel shrinkage) may be mentioned, in which the edge region formed by the outer edge of the luminous surface burns away due to the high current densities. This results in an unsightly, frayed luminous surface outer contour, which is generally a specification violation. Also, there may be progressive damage to the layers from this area to adjacent areas, since the high current density and a large heat input in the form of waste heat due to a lighting efficiency of less than 100% prevails in this area.
  • the particular automotive operating conditions for OLEDs are due to the influence of high temperatures, temperature fluctuations, temperature shocks, moisture, shocks, ultraviolet radiation (UV radiation), noxious gases, such as combustion gases, along with a high required service life of at least 8000 h operating time and a shelf life defined, for example, by a specified overall lifetime of a vehicle of at least 15 years, relatively high compared to other OLED products, such as home and workplace lighting, televisions built in televisions, or cell phone displays.
  • UV radiation ultraviolet radiation
  • Such robust and resistant OLEDs can currently only be produced at great expense and / or in an inadequate quantity.
  • the latter is currently due to a high level of waste, since a large number of produced OLEDs has to be sorted out by a monitoring called production in the production under sorting out faulty parts, since they do not have the appropriate quality.
  • production in the production under sorting out faulty parts since they do not have the appropriate quality.
  • the result is that a mass production with many 10,000 OLEDs currently proves to be uneconomical, as this OLED prices are too high for the market.
  • OLED errors can be detected by screening and / or individual errors become visible only after delivery, such as the growth of initially tiny dark spots and / or emergence of shorted areas in the OLED.
  • OLEDs are still not available in large numbers and correspondingly cost-effective for the automotive sector.
  • a general objective in the development of vehicle components, such as vehicle lights and bulbs for use in vehicle lights, are low production costs associated with a low scrap rate, which has a cost-reducing effect on the manufacturing costs.
  • An object of the invention is to provide a light source for vehicle applications, in particular for use in vehicle lights with a luminous surface called as bright as homogeneous surface, which can be produced inexpensively, the appearance of an OLED awakens and a longer life at least the same efficiency in the conversion of electricity into visible light to the human eye.
  • a first subject of the invention accordingly relates to a lighting device for vehicle lights.
  • the luminous means comprises at least one LED as the light source and a light guide sheet produced in multi-component injection molding technology with two opposing luminous surfaces interconnected by a circumferential narrow side, at one or more parts of whose narrow side the light emitted by the at least one LED is irradiated.
  • the optical waveguide sheet comprises at least one Lichtleit analysespartie preferably in multi-component injection molding due to the one-piece production referred to as Klartakt, at least one due to the integral production preferably in multi-component injection molding also referred to as Diffustakt volume spreader, and, if necessary, at least one due to the one-piece production preferably in multi-component injection molding Also referred to as Opakttakt Opakpartie, for example, to conceal directly emitted by the LED light and / or to bring structures in one or both opposite luminous surfaces of the light guide sheet.
  • the optical waveguide sheet comprises at least one Klartakt for a Lichtleit Economicspartie, at least one Diffustakt for a volume spreader and, if necessary, at least one Opakttakt for a Opakpartie, for example, to directly hide the light emitted by the LED and / or structures in one or both opposite light surfaces of the To introduce light guide sheet.
  • the at least one LED as a light source is directly connected to the light guide sheet, for example molded or molded.
  • the volume spreader section can be crystal clear or diffuse.
  • a conductor carrier can be part of the luminous means, via which the at least one LED is electrically contacted.
  • the conductor carrier can be molded or hot-staked, for example.
  • the conductor carrier is screwed to the light guide sheet and / or clipped into the light guide sheet and / or the light guide sheet is clipped into the conductor carrier.
  • Widely used conductor carriers are, for a short time, printed circuit board, board or printed circuit board (PCB), rigid printed circuit boards.
  • PCB printed circuit board
  • a printed circuit board is a carrier for electronic components. It serves for mechanical fastening and electrical connection. Almost every electronic device contains one or more printed circuit boards.
  • MID technology molded-interconnect device technique
  • injection-molded circuit board Another possibility for mechanical attachment and electrical connection of electronic components are in MID technology (MID technology: molded-interconnect device technique) manufactured injection-molded circuit board.
  • electrical connections of an electronic component for example, by surface mount technology, through-hole mounting technology or by Wire or ACF bonding to be contacted interconnects in an injection molded part, which also serves as a carrier of the one or more electronic components, integrated in the injection molding process.
  • the luminous surfaces of the light guide sheet can be subdivided by one or more separation surfaces in two or more illuminated area parts.
  • the separating surfaces can be arranged in the volume spreader section and / or in the light guide section and / or in the optional opaque section.
  • Animated light functions and / or differently colored and / or animated light functions and / or subdividing through the luminous surfaces of the light guide sheet into a plurality of luminous surface areas and preventing crosstalk of light between the luminous surface areas in conjunction with more than one LED as the light source different bright light functions can be realized with only one light source with a light guide sheet.
  • the lighting means may moreover comprise latching means which can enter into a latching connection with, for example, latching lugs, rear grips, etc. arranged in a luminaire housing, corresponding latching means.
  • the locking means may be formed in the Opakpartie.
  • the Opaktakt can therefore be provided in addition to form latching means which can enter into a latching connection with, for example, arranged in a lamp housing, corresponding locking means, such as locking lugs, Schugreifept, etc.
  • the luminous surfaces of the light guide sheet are designed to be curved in two or more dimensions.
  • the optical waveguide sheet has a thickness of at most 3 mm, for example of not more than 2 mm, and dimensions of its luminous surfaces of at most 200 mm ⁇ 300 mm.
  • At least the volume spreader section may have a recess.
  • an opaque section may be arranged as a separate part or integrally in multi-component injection molding technology.
  • an engraving may be applied at least to the volume spreader section.
  • a material can be introduced, which either prevents the light emission in the engraving, thereby making the engraving visible in otherwise surrounding luminous area, or amplifies the light emission in the engraving to make the engraving visible by brighter light emission than in the surrounding luminous area.
  • a frame may be arranged at least on a luminous surface.
  • a transparent plate may be pre-set plane-parallel to the luminous surfaces spaced around an air gap.
  • the transparent plate is preferably a diffuser plate.
  • a plate is applied.
  • This plate should further homogenize the light.
  • the light guide body and the plate designed, for example, as a diffuser plate the smallest possible air gap is provided in order to efficiently guide the light in the light guide body.
  • the diffuser plate can be applied to the light guide, for example by means of friction welding, for example, the welding surface is a narrow, circumferential edge.
  • additional LEDs can be attached, which radiate directly into the light guide body.
  • the decoupling prisms can be arranged on at least one of the luminous surfaces and / or in the volume spreader section of the luminous means.
  • the decoupling prisms may alternatively or additionally be arranged in such a plate.
  • the invention provides an LED illuminant as a cost-effective and stable alternative to OLEDs.
  • the light source has the appearance of an OLED, without having to accept their disadvantages in terms of temperature sensitivity and high unit cost.
  • Comparatively inexpensive inserts in the tool allow a significant change in the appearance of the light guide sheet.
  • a completely new OLED would have to be produced for comparably high unit costs, which would also have an effect on the number of OLEDs remaining in decreasing quantities.
  • a second object of the invention relates to a vehicle lamp with a previously described illuminant for fulfilling at least one light function of the vehicle lamp.
  • the vehicle lamp comprises, for example, a luminaire interior substantially enclosed by a luminaire housing and a lens, and at least one light source accommodating at least one light source housed therein for at least one light function of the vehicle luminaire.
  • At least one of the optionally provided for fulfilling or contributing to a fulfillment of each of a light function of the vehicle lamp bulbs is a lighting means described above.
  • the lighting means may comprise individual or a combination of the features described above and / or below in connection with the vehicle lamp, just as the vehicle lamp may have and / or implement individual or a combination of a plurality of features previously and / or subsequently described in connection with the lighting means.
  • the illuminant and / or the vehicular lamp may alternatively or additionally be single or a combination of several in the context of the prior art and / or in one or more of the prior art documents and / or in the following description to those in the drawings having illustrated embodiments described features.
  • the optical waveguide sheet 03 of the illuminant 01 comprises at least one Lichtleit analysespartie 33 preferably also referred to as a Klartakt Lichtleit analysespartie 33 in the multi-component injection molding and at least one due to the integral production preferably in multi-component injection molding also referred to as a diffuse-cycle volume spreader 35th
  • the optical waveguide sheet 03 comprises at least one Klartakt for a Lichtleit Economicspartie 33, at least one Diffustakt for a volume spreader section 35 and, if necessary, at least one Opakttakt for Opakpartie 37, for example, to hide directly from the LED 02 emitted light and / or structures in one or to introduce both opposing luminous surfaces 31 of the optical waveguide sheet 03.
  • the edge-side LED coupling surface of the Klartaktes can be planar, spherical or designed as a freeform surface.
  • All or one Tel of the surfaces of the light guide sheet 03 may be additionally grained.
  • the individual cycles can also be connected by means of adhesive.
  • the Klartakt and the Diffustakt preferably with an optical adhesive with a comparable refractive index.
  • the optical waveguide sheet 03 does not necessarily have to be molded in one piece or as one part in two- or multi-component injection molding technology.
  • the Klartakt can be round or polygonal in cross section.
  • the Klartakt can be unilaterally or completely metallized.
  • the diffuse cycle can be metallized on one side on the front side in order to decouple the light only at the front or rear. This increases the luminance and intensity in this direction.
  • the light surfaces 31 forming and / or at least comprehensive end faces of the light guide sheet 03 need not force to be plane-parallel, but can over the longest extent of the narrow side 30 corresponding longitudinal side tapered.
  • a recess 04 openings and / or openings can be introduced, as in Fig. 7 for a arranged in the volume spreader section 35 or provided recess 04 shown.
  • At least the volume spreader section 35 may have a recess 04.
  • the recess 04 can be formed or produced by engraving.
  • an engraving and / or be applied Accordingly, at least on the volume spreader 35 an engraving and / or be applied.
  • the optical waveguide sheet 03 may comprise at least one opaque section 37, also referred to as an opaque cycle due to the preferred one-piece production, for example to conceal light emitted directly by the LED 02 and / or structures in one or both opposing luminous surfaces 31 of the optical waveguide sheet 03 to introduce.
  • an opaque section 37 may be arranged as a separate part or integrally in multi-component injection molding technology, as in FIG Fig. 8 for a recess 04 with an opaque section 37 arranged in it.
  • a material may be introduced, which either prevents the light emission in the engraving, thereby making the engraving visible in otherwise surrounding luminous surface 31, as for example by a in the Opaque section 37 arranged by means of the engraving can be the case, or it amplifies the light emission in the region of the engraving, in order to make visible or highlight the engraving by brighter light emission than in the surrounding luminous surface 31.
  • the light guide sheets 03 can also be printed or embossed on the end faces, which leads to great flexibility in production.
  • the luminous surfaces 31 of the optical waveguide sheet 03 can be subdivided into two or more luminous surface areas 32 by one or more separating surfaces 39, also referred to as separators ( Fig. 1 ).
  • animated light functions and / or differently colored and / or differently bright light functions can participate in by the luminous surfaces 31 of the light guide sheet 03 into a plurality of luminous surface areas 32 dividing and a crosstalk of light between the luminous surface parts 32 separating surfaces 39 in conjunction with more than one LED 02 only one light source 01 with a light guide sheet 03 can be realized.
  • the optionally provided Opakpartie 37 may hereafter include the separating surfaces 39.
  • the optional opaktakt can decouple individual light segments 32, also referred to as segments, as light-impermeable separator. These can be individually controlled via one of the luminous area 32 associated LED 02.
  • parting surfaces 39 can be arranged in the volume spreader section 35 and / or in the light guide part 33 and / or between the light guide part 33 and the volume spreader part 35.
  • the opaque act may also include, as a design component, a mask, such as a frame and / or a structure, such as an engraving.
  • a mask such as a frame and / or a structure, such as an engraving.
  • separators can be optically laminated.
  • this mask can also be applied inexpensively as a print or hot stamp on the lens of a vehicle lamp and / or on one or both luminous surfaces 31 of the optical waveguide sheet 03.
  • the at least one LED 02 as a light source can be connected directly to the light guide sheet 03.
  • the optical waveguide sheet 03 may be molded onto the LED 02 or the LED 02 may be encapsulated by the optical waveguide sheet 03.
  • Fig. 3 is a view opposite to the main radiation direction with exemplary, in Fig. 3 represented by arrows S1, S2, S3, S4, S5, S6, S7 indicated beam paths of the coupled by two LEDs 02 via the Lichtleit analysespartie 33 in the optical waveguide sheet 03 light.
  • a light pipe and light deflection takes place in the volume spreader section 35 in the Lichtleitoasapartie 33 and a substantially in the normal on the image plane in Fig. 3
  • Upstream main emission taking place light extraction from the optical waveguide sheet 03 in the volume spreader 35th
  • the volume spreader section 35 can be made crystal clear or diffuse.
  • An advantageous embodiment of the invention provides that a conductor carrier 05 is part of the light source 01, via which the at least one LED 02 is electrically contacted ( Fig. 4 . Fig. 5 . Fig. 6 . Fig. 10 . Fig. 11 . Fig. 12 ).
  • Widest common conductor carriers 05 are rigid printed circuit boards, which are referred to briefly as printed circuit board, printed circuit board or printed circuit board (PCB).
  • PCB printed circuit board
  • a printed circuit board is a carrier for electronic components. It serves for mechanical fastening and electrical connection. Almost every electronic device contains one or more printed circuit boards.
  • MID technology Molded-Interconnect-Device technology
  • the electrical connections of an electronic component for example by surface mounting technology, through-hole mounting technology or by wire or ACF bonding to be contacted traces in an injection molded part, which also serves as a carrier of the one or more electronic components, integrated in the injection molding process.
  • the conductor carrier 05 may be molded or heat staked.
  • the conductor carrier 05 is screwed to the light guide sheet 03 and / or clipped into the light guide sheet 03 and / or the light guide sheet 03 is clipped into the conductor carrier 05.
  • connection of the electronics represented by the conductor carrier 05 can take place in different positions.
  • Fig. 5 is a formed by a small board possible conductor carrier 05 90 ° to the optical guide sheet 03rd
  • Fig. 6 is a formed by a circuit board carrier 05 in the same orientation as the light guide sheet 03rd
  • a frame 06 may be arranged, as in Fig. 9 shown. It shows Fig. 9 a light guide sheet 03 with a recess 04 forming engraving and on the viewer facing, in the main emission direction front side luminous surface 31 frame 06th
  • the luminous surfaces 31 of the optical waveguide sheet 03 may be curved in two or more dimensions.
  • LED technology allows the implementation of 2.5D and 3D light guide sheets 03. This is not yet possible with OLEDs for the automotive sector.
  • Fig. 10 shows an embodiment of a light guide sheet 03 with two and a half-curved light-emitting surface 31st
  • Fig. 11 shows an embodiment of a light guide sheet 03 with three-dimensionally curved and twisted luminous surfaces 31st
  • the lighting means 01 can comprise latching means 07 ( Fig. 12 ).
  • the locking means 07 are preferably arranged on the light guide sheet 03.
  • the latching means 07 may include hooks, projections, rear grips and the like.
  • the locking means may be formed in the optional Opakpartie 37.
  • the light source 01 has hereafter advantageously latching means 07, which can be arranged with a arranged approximately in a lamp housing, corresponding locking means, such as locking lugs, rear grips, etc. a snap connection.
  • the Opaktakt can therefore also be provided to form latching means 07 which can enter into a snap-in connection with approximately corresponding arranged in a lamp housing, corresponding locking means, such as locking lugs, Schugreifept, etc.
  • a in Fig. 12 illustrated hook system in which the light source 01 is first hung with a locking means formed as a hook 07 on a vehicle lamp side pin 08 and then around this pin 08 as in Fig. 12 is pivoted by an arrow V, until a designed as a latching nose second locking means 72 is locked in a vehicle light side rear engagement.
  • An optionally present interconnect carrier 05 may in this case be provided with the vehicle luminaire-side electrical contacting of the one or more LEDs 02 of the illuminant 01 serving exposed interconnect surfaces 50, which are for example by means of vehicle lamp side contact wings tool-free to make electrical contact suitable.
  • the optical waveguide sheet 03 advantageously has dimensions in the order of magnitude of an OLED having a thickness of at most 3 mm, particularly preferably of at most 2 mm, and dimensions of its luminous surfaces 31 of at most 200 mm ⁇ 300 mm.
  • a transparent plate 09 for example, be arranged plane-parallel to the luminous surfaces 31 of the optical waveguide sheet 03 spaced around an air gap 10 ( Fig. 13 . Fig. 14 ).
  • the transparent plate 09 is preferably a diffuser plate.
  • a plate 09 is additionally applied.
  • This plate 09 is intended to further homogenize the light.
  • the smallest possible air gap 10 is preferably provided in order to efficiently guide the light in the light guide body 03.
  • the diffuser plate can be applied to the light guide body, for example, by friction welding, the welding surface is, for example, a narrow peripheral edge 11 (FIG. Fig. 14 ).
  • decoupling prisms 12 may be arranged ( Fig. 14 . Fig. 15 . Fig. 16 ).
  • the decoupling prisms 12 are preferably on the in Fig. 14 for example, indicated by an arrow P indicated main emission direction opposite luminous surface 31.
  • the decoupling prisms 12 may alternatively or additionally be arranged on and / or in such a plate 12.
  • additional LEDs 02 can be attached, which radiate directly into the light guide sheet 03.
  • reflection of reflections of, for example, a part of at least one luminous area 31 enhances the perceived value of the luminous means 01, which is also referred to as an LED blade and which comprises the optical waveguide sheet 03.
  • the invention can be realized by one or more LEDs 02 as light sources comprehensive bulbs 01 with a light guide sheet 03 of multi-component work (art) fabric, the light guide sheet 03 from a well-called Klartakt component clearly transparent, one as a diffuse cycle designated, a volume spreader forming component diffusely scattering and optionally opaque to a component also referred to as Opaktakt consists, plus the corresponding electronic component, which in Fig. 1 . Fig. 2 . Fig. 3 . Fig. 4 . Fig. 5 . Fig. 6 . Fig. 7 . Fig. 8 . Fig. 9 . Fig. 10 . Fig. 11 . Fig. 12 . Fig. 13 . Fig. 14 . Fig. 15 . Fig. 16 simplified mostly on one or more LEDs 02 is shown reduced.
  • Klartakt component clearly transparent, one as a diffuse cycle designated, a volume spreader forming component diffusely scattering and optionally opaque to a component also referred to as Opaktakt
  • the photoconductive plastics of the optical waveguide sheet 03 preferably have an identical optical refractive index.
  • the Klartakt is molded longitudinally on the thin side of the diffusion clock and encloses this partially or completely.
  • deflecting elements are attached to the Klartakt longitudinally above and / or below, which deflect the light preferably by total reflection in the direction of the diffusion clock.
  • These deflectors are designed so that they register the light evenly over the entire length of the diffuse clock.
  • the light is transmitted in the diffuse cycle and scattered in all directions.
  • the diffusion clock forms a volume spreader formed by and / or encompassed by the volume spreader section 35.
  • the example in Fig. 14 indicated by an arrow P, also referred to as Schoauskoppelraum main radiation direction of the scattered light is the front side behind and front via the luminous surfaces 31 of the optical waveguide sheet 03rd
  • the end faces formed by the luminous surfaces 31 and formed by the large exit surfaces in the diffuse cycle may be arranged parallel to one another.
  • the invention provides an LED illuminant as a cost-effective and stable alternative to OLEDs.
  • the light source 01 has the appearance of an OLED, without having to accept their disadvantages in terms of temperature sensitivity and high unit costs.
  • Comparatively inexpensive inserts in the tool allow a significant change in the appearance of the light guide sheet.
  • a completely new OLED would have to be produced for comparably high unit costs, which would also have an effect on the number of OLEDs remaining in decreasing quantities.
  • the invention can also be implemented by a vehicle lamp with a previously described light source for fulfilling at least one light function of the vehicle lamp.
  • the vehicle lamp comprises, for example, a luminaire interior substantially enclosed by a luminaire housing and a lens, and at least one light source accommodating at least one light source housed therein for at least one light function of the vehicle luminaire.
  • At least one of the optionally provided for fulfilling or contributing to a fulfillment of each of a light function of the vehicle lamp bulbs is a lighting means described above.
  • the LED Blade variant made it possible to change the appearance even with changing inserts in the tool with moderate effort.
  • the illuminant 01 and / or the vehicle luminaire may alternatively or additionally comprise individual or a combination of several in the context of the prior art and / or in one or more of the documents mentioned in the prior art and / or features mentioned in the preceding description.
  • the light source 01 may have individual or a combination of the features described above in connection with the vehicle lamp, just as the vehicle light may have and / or implement individual or a combination of a plurality of features previously described in connection with the light source 01.
  • the invention is particularly industrially applicable in the field of manufacturing vehicle lights, in particular motor vehicle lights.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Led Device Packages (AREA)
EP18167112.4A 2018-04-12 2018-04-12 Élément lumineux pour lampes de véhicule automobile comprenant un guide de lumière en forme de plaque et véhicule automobile équipé d'un tel élément lumineux Withdrawn EP3553371A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP18167112.4A EP3553371A1 (fr) 2018-04-12 2018-04-12 Élément lumineux pour lampes de véhicule automobile comprenant un guide de lumière en forme de plaque et véhicule automobile équipé d'un tel élément lumineux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP18167112.4A EP3553371A1 (fr) 2018-04-12 2018-04-12 Élément lumineux pour lampes de véhicule automobile comprenant un guide de lumière en forme de plaque et véhicule automobile équipé d'un tel élément lumineux

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EP3553371A1 true EP3553371A1 (fr) 2019-10-16

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022148773A1 (fr) * 2021-01-11 2022-07-14 Valeo Vision Ensemble électroluminescent pour véhicule
DE102021111305A1 (de) 2021-05-01 2022-11-03 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung und Verfahren zu deren Herstellung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1378393A1 (fr) * 2002-07-04 2004-01-07 Compagnie Plastic Omnium Dispositif de signalisation et pièce de carosserie de véhicule automobile munie d'un tel dispositif
DE212011100156U1 (de) * 2010-10-19 2013-06-10 Automotive Lighting Italia S.P.A. Kraftfahrzeugscheinwerfer
EP2722578A1 (fr) * 2012-10-17 2014-04-23 odelo GmbH Élément de conducteur lumineux en surface, moyen d'éclairage et lampe de véhicule automobile
JP2015041466A (ja) * 2013-08-21 2015-03-02 株式会社小糸製作所 線状発光パターンを形成する発光装置
DE102014200369A1 (de) * 2014-01-10 2015-07-16 Osram Gmbh Flächenleuchtvorrichtung mit flächigem Lichtleiter
DE102014110225A1 (de) * 2014-07-21 2016-01-21 Osram Opto Semiconductors Gmbh Fahrzeugleuchte
US20160252228A1 (en) * 2015-02-26 2016-09-01 Valeo Iluminacion Motor vehicle light device
DE102016008450A1 (de) * 2016-07-11 2018-01-11 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Leuchtvorrichtung für ein Fahrzeug

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1378393A1 (fr) * 2002-07-04 2004-01-07 Compagnie Plastic Omnium Dispositif de signalisation et pièce de carosserie de véhicule automobile munie d'un tel dispositif
DE212011100156U1 (de) * 2010-10-19 2013-06-10 Automotive Lighting Italia S.P.A. Kraftfahrzeugscheinwerfer
EP2722578A1 (fr) * 2012-10-17 2014-04-23 odelo GmbH Élément de conducteur lumineux en surface, moyen d'éclairage et lampe de véhicule automobile
JP2015041466A (ja) * 2013-08-21 2015-03-02 株式会社小糸製作所 線状発光パターンを形成する発光装置
DE102014200369A1 (de) * 2014-01-10 2015-07-16 Osram Gmbh Flächenleuchtvorrichtung mit flächigem Lichtleiter
DE102014110225A1 (de) * 2014-07-21 2016-01-21 Osram Opto Semiconductors Gmbh Fahrzeugleuchte
US20160252228A1 (en) * 2015-02-26 2016-09-01 Valeo Iluminacion Motor vehicle light device
DE102016008450A1 (de) * 2016-07-11 2018-01-11 GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) Leuchtvorrichtung für ein Fahrzeug

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022148773A1 (fr) * 2021-01-11 2022-07-14 Valeo Vision Ensemble électroluminescent pour véhicule
US12092279B2 (en) 2021-01-11 2024-09-17 Valeo Vision Light-emitting assembly, vehicle lamp and vehicle
DE102021111305A1 (de) 2021-05-01 2022-11-03 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung und Verfahren zu deren Herstellung

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