EP0416253A2 - Light - Google Patents

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Publication number
EP0416253A2
EP0416253A2 EP90113634A EP90113634A EP0416253A2 EP 0416253 A2 EP0416253 A2 EP 0416253A2 EP 90113634 A EP90113634 A EP 90113634A EP 90113634 A EP90113634 A EP 90113634A EP 0416253 A2 EP0416253 A2 EP 0416253A2
Authority
EP
European Patent Office
Prior art keywords
light
emitting diodes
characterized
provided
emitter 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.)
Granted
Application number
EP90113634A
Other languages
German (de)
French (fr)
Other versions
EP0416253A3 (en
EP0416253B1 (en
Inventor
Karl-Heinz Schöniger
Winfried Scheid
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.)
Inotec Gesellschaft fur Innovative Technik GmbH
Inotec GmbH Gesellschaft fur Innovative Technik
Original Assignee
Inotec Gesellschaft fur Innovative Technik GmbH
Inotec GmbH Gesellschaft fur Innovative Technik
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 to DE3929955A priority Critical patent/DE3929955A1/en
Priority to DE3929955 priority
Application filed by Inotec Gesellschaft fur Innovative Technik GmbH, Inotec GmbH Gesellschaft fur Innovative Technik filed Critical Inotec Gesellschaft fur Innovative Technik GmbH
Publication of EP0416253A2 publication Critical patent/EP0416253A2/en
Publication of EP0416253A3 publication Critical patent/EP0416253A3/en
Application granted granted Critical
Publication of EP0416253B1 publication Critical patent/EP0416253B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01FADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/60Upright bodies, e.g. marker posts or bollards; Supports for road signs
    • E01F9/604Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
    • E01F9/615Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings illuminated
    • E01F9/617Illuminated or wired-up posts, bollards, pillars or like upstanding bodies or structures for traffic guidance, warning or control
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • F21S41/147Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148Light 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • F21S41/151Light emitting diodes [LED] arranged in one or more lines
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24Light guides
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20Signalling 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
    • F21S43/235Light guides
    • F21S43/236Light guides characterised by the shape of the light guide
    • F21S43/239Light guides characterised by the shape of the light guide plate-shaped
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20Signalling 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
    • F21S43/235Light guides
    • F21S43/242Light guides characterised by the emission area
    • F21S43/245Light guides characterised by the emission area emitting light from one or more of its major surfaces
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20Signalling 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
    • F21S43/235Light guides
    • F21S43/249Light guides with two or more light sources being coupled into the light guide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/30Ventilation or drainage of lighting devices
    • F21S45/37Ventilation or drainage of lighting devices specially adapted for signal lamps
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40Cooling of lighting devices
    • F21S45/47Passive cooling, e.g. using fins, thermal conductive elements or openings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/502Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/505Cooling arrangements characterised by the adaptation for cooling of specific components of reflectors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0008Reflectors for light sources providing for indirect lighting
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00Reflectors for light sources
    • F21V7/0025Combination of two or more reflectors for a single light source
    • F21V7/0033Combination of two or more reflectors for a single light source with successive reflections from one reflector to the next or following
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30Elongate light sources, e.g. fluorescent tubes curved
    • F21Y2103/33Elongate light sources, e.g. fluorescent tubes curved annular
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S362/00Illumination
    • Y10S362/80Light emitting diode

Abstract

A light, such as a headlight, a signalling light, a lighting fixture or the like, is proposed which is provided with an essentially flat, light-transmitting emitter element (10) in whose circumferential edge (13) a multiplicity of luminous elements (14) are inserted. The edges (13) are provided with an inwardly reflecting layer (16). The front side (12) of the emitter element is constructed as an emitting area, while the whole of the rear side (11) is provided with an inwardly reflecting layer (16). Such a light can be used in conjunction with a very flat design, low power consumption and a large homogeneous luminous area for motor vehicle lighting, in particular. …<IMAGE>…

Description

  • The invention relates to a light emitter, such as a headlamp, a signal emitter, a lighting fixture or the like, with an essentially flat, translucent emitter element, in the peripheral edges of which a plurality of light elements are embedded, the edges being provided with a reflective layer.
  • From DE-OS 38 25 436 it is known to provide light-guiding plates with light-emitting diodes on the edge, the light emerging from display symbols stuck on the back and illuminating them. The light of the light-emitting diodes is therefore only used to illuminate the display symbols, so that the entire arrangement is not used as a light emitter, e.g. Spotlights for illuminating objects, can be used.
  • Conventional headlights, reflectors or the like. have a light bulb in the focus of a reflector. The The disadvantage of such light emitters is that they require a large installation depth, which can be a disadvantage, particularly when space is restricted in motor vehicles. Due to the poor luminous efficacy of light bulbs, high temperatures occur, which necessitate a corresponding construction that ensures the dissipation of heat. In the event of a defect in the light bulb, the light emitter completely loses its function, so that an immediate replacement is required, particularly in the case of important functions such as headlights and taillights. However, such a defect can lead to dangerous situations.
  • It has already been proposed to arrange a large number of light-emitting diodes on one surface in order to implement a motor vehicle rear light. The disadvantage here is that a sum of light points appears instead of a homogeneous luminous surface.
  • It is therefore an object of the present invention to provide a light emitter of the type mentioned at the outset which, in the case of a flat design, offers a high luminous efficacy with a relatively uniform light distribution.
  • This object is achieved in that the front of the radiator element is designed as a radiation surface and the back is completely provided with a reflective layer. The defect of an individual acts due to the large number of light-emitting elements, which are preferably designed as light-emitting diodes LED only insignificantly, so that no safety problems arise and an immediate replacement is not necessary. A very large number of light-emitting diodes can be arranged on the peripheral edges, so that, in particular when using modern high-performance diodes, such a large amount of light can be generated that use as headlights. Taillight or the like is possible. Due to the lateral discharge of the electrical leads to the individual lighting elements, such a flat arrangement is possible that such light emitters can be attached to the outside of the body of a motor vehicle without problems, for example, and thus require practically no space. Due to the uniform distribution on the peripheral edges, the light emitter surface is illuminated very evenly, the light being completely emitted to the front due to the completely reflective layer on the back. A further reflective layer prevents light from escaping at the edges.
  • The measures listed in the subclaims allow advantageous developments and improvements of the light emitter specified in claim 1.
  • An even more uniform light distribution is achieved in that the front side is provided with a reflective layer in the area on the edge which has the lighting elements. As a result, the light can only reach the central region of the emitter element in order to be emitted to the front from there. To in particular with headlights, reflectors or the like. to achieve light bundling and a directional characteristic, the front side and / or the edges and / or the rear side of the emitter element advantageously have a shape that bundles the light. For this purpose, the front is preferably convex, and / or the rear is conically shaped inwards, and / or the edges have an essentially concave cross section. Another expedient possibility is that the front, the edges and / or the back of the emitter element are provided with elevations or depressions that focus the light. The choice of means depends not least on whether the light should be emitted essentially in parallel or in a desired cone. The individual measures can have an additive or additional effect. The shape of the emitter element also specifies the directional characteristic of the light, which means that the reflective layer or the reflective coating on the back replaces a separate directional reflector and a separate radiation optics.
  • The reflective layer is evaporated, glued on or applied galvanically in a simple and inexpensive manner. With a very large amount of light, that is to say with a very large number of very powerful light-emitting elements or light-emitting diodes, the reflective layer can also expediently be connected to a heat sink.
  • To increase the variability of the light emitter, differently colored light-emitting diodes are advantageously provided. In this case, only those light-emitting diodes that have this light color can be switched on to specify a specific desired light color, or different-colored light-emitting diodes can be switched on that achieve the desired color or mixed color in combination. For example, red, green and blue LEDs can be used to generate white light. With light-emitting diodes of different colors, different effects and possible uses of a light emitter can be opened. For example, the emitter element can be designed as a plastic body in the form of a motor vehicle rear light, in which brake light, reversing light and / or turn signal functions are also included. Different light-emitting diodes can be used to generate either red, yellow or white light, depending on which function is currently required. Is the radiator element as a motor vehicle headlight, for. B. trained as parking lights, so of course only the white color or, for example, only the yellow color is required for French vehicles. An expedient embodiment also includes training as a construction site warning light, the light-emitting diodes being operated in pulsed mode at increased output. In pulsed operation, the LEDs can be operated at up to ten times the current strength.
  • Two embodiments of the invention are shown in the drawing and explained in more detail in the following description. Show it:
    • 1 is a top view of a light emitter designed as a round headlight,
    • Fig. 2 shows the headlight shown in Fig. 1 in cross section and
    • Fig. 3 shows a cross section of another, designed as a headlight light emitter.
  • In the first embodiment shown in FIGS. 1 and 2, a headlamp consists essentially of a translucent radiating element 10, which is made as a round plate made of glass or transparent plastic material such as acrylic glass. The material can also contain fluorescent particles. While the rear 11 of the radiator element is flat, the front 12 is convex in the manner of a converging lens. In the peripheral edge 13 of the radiator element 10, twelve light-emitting diodes 14 are inserted at regular intervals into corresponding insertion openings. This number is of course arbitrary and depends on the desired amount of light to be achieved. In the case of a headlight, the arrangement can be considerably denser than, for example, in the case of a rear light of a motor vehicle. The rear side 11, the edge 13 and a strip-shaped region 15 of the front side 12 covering the light-emitting diodes 14 to the front are provided with an inwardly reflecting layer 16. This layer can be vapor-deposited, glued on or applied galvanically, so that the corresponding surfaces are mirrored in such a way that all the light is reflected on it and is reflected back into the interior.
  • Due to the convex front, the emitted light is bundled. Depending on the type of light bundle desired, the shape of the front can vary, e.g. depending on the desired beam angle.
  • In the second exemplary embodiment shown in FIG. 3, the rear side 17 of a radiator element 18 is formed in a cone inwards, with the circular cross section of the radiator element 18 essentially creating a circular cone with immersed side surfaces in the horizontal plane. According to the first exemplary embodiment, the light-emitting diodes 14 are arranged distributed over the circumference, in each case at the focal point of the reflector which is parabolic or elliptical in cross section and formed by the rear side 17. As shown schematically by light arrows, an essentially parallel light emission can be achieved in this way. The emitter element 18 not only specifies the shape of the reflector, but is also a light guide element and holder for the light-emitting diodes 14.
  • In order to achieve heat dissipation at very high light intensity, the rear side 17 is provided with annular heat sinks 19 which fit into the conical indentation the back 17 are fitted. Here too, of course, other heat sink shapes can be used instead of ring-shaped heat sinks, which may possibly protrude beyond the conical indentation. Since light-emitting diodes have a very high luminous efficiency and relatively little heating, such heat sinks 19 are only required if the light-emitting diodes are arranged very densely and if the light-emitting diodes are very powerful.
  • Combinations of the two exemplary embodiments with regard to the shape of the front and rear of the emitter element are also possible, alternative shapes of the cross-sectional shape also being possible, depending on the manner in which the light is to be focused. With rectangular or oval light emitters and with light emitters with a different horizontal cross-sectional shape, variations in the shape of the front and back may be necessary. The edge regions can also have a shape that differs from the exemplary embodiments in order to support the bundling of light and, for example, can have a concave cross section in order to support the light radiation into the center of the emitter element.
  • In addition to being designed as headlights, for example motor vehicle headlights or parking lights, such light sources can also be used for other signal or lighting functions, for example for motor vehicle rear light combinations, that is to say combinations of rear light, brake light, reversing light and / or turn signals. These can be carried out separately, but can also be integrated in a light emitter. Different colored light emitting diodes are used to generate the different light colors required for this. Red LEDs are used for the rear light and brake light function and yellow LEDs for the turn signal function. A different number of light-emitting diodes can be activated to generate different brightnesses for the brake light and the rear light. To generate white light for the reversing light, red, green and blue light-emitting diodes can be switched on at the same time, the light colors of which then add up to white light. If white LEDs are available, you can of course also use them directly. Furthermore, it is also possible to use other lighting elements that have comparable properties.
  • Light emitters with different colored light-emitting diodes can also be used to illuminate objects in advertising, in the show business, in the entertainment industry or the like. be used. Different lighting effects can be created with a single headlight.
  • The light-emitting diodes can also be used for special applications in pulse mode, for example for construction site lighting. For this purpose, yellow light-emitting diodes are preferably used, it being possible to use up to twenty times the current intensity in the pulse mode in order to generate light flashes. Due to the low power consumption of light emitting diodes very small energy storage devices can be used on construction sites.
  • Instead of homogeneously shaped front, edge and back for light bundling, individual elevations or depressions can also occur, the shape of which each causes light bundling, for example a large number of inclined surfaces or reflector-like individual elements.

Claims (10)

1. Light emitter, such as a headlamp, a signal emitter, a lighting fixture or the like, with an essentially flat, translucent emitter element, in the peripheral edges of which a multiplicity of light-emitting elements, in particular light-emitting diodes, are let in, the edges being provided with a reflective layer , characterized in that the front (12) of the emitter element is designed as a radiation surface and the back (11; 17) is provided entirely with an inwardly reflecting layer (16).
2. Light emitter according to claim 1, characterized in that the front side (12) in the edge-side area having the lighting elements (15) is provided with a reflective layer (16).
3. Light emitter according to claim 1 or 2, characterized in that the front side (12) and / or the edges (13) and / or the rear side (11; 17) of the emitter element (10; 18) have a light bundling shape.
4. Light emitter according to claim 3, characterized in that the front (12) is convex and / or that the back (17) is conically shaped inwards and / or that the front and / or the edges and / or the back of the Radiator element are provided with the light-concentrating elevations or depressions and / or that the edges have a substantially concave cross section.
5. Light emitter according to one of the preceding claims, characterized in that the reflective layer (16) is evaporated, glued or applied galvanically.
6. Light emitter according to claim 5, characterized in that the reflective layer (16) is connected to a heat sink (19).
7. Light emitter according to one of the preceding claims, characterized in that different-colored light-emitting diodes (14) are provided for generating predetermined light colors, in particular for generating white light red, green and blue light-emitting diodes (14) are provided.
8. Light emitter according to claim 7, characterized in that of the differently colored light-emitting diodes (14) optionally only light-emitting diodes of one color or simultaneously light-emitting diodes with different colors can be switched on.
9. Light emitter according to one of claims 1 to 8, characterized by the design as a motor vehicle headlight or as a plastic body in the form of a motor vehicle rear light, in particular as a combined version with brake light, reversing light, and / or turn signals.
10. Light emitter according to one of claims 1 to 8, characterized by the construction as a construction site warning light, the light-emitting diodes (14) being operated in pulse mode at increased power.
EP90113634A 1989-09-08 1990-07-17 Light Expired - Lifetime EP0416253B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE3929955A DE3929955A1 (en) 1989-09-08 1989-09-08 Light spotlights
DE3929955 1989-09-08

Publications (3)

Publication Number Publication Date
EP0416253A2 true EP0416253A2 (en) 1991-03-13
EP0416253A3 EP0416253A3 (en) 1992-02-19
EP0416253B1 EP0416253B1 (en) 1995-05-17

Family

ID=6388960

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90113634A Expired - Lifetime EP0416253B1 (en) 1989-09-08 1990-07-17 Light

Country Status (6)

Country Link
US (1) US5136483A (en)
EP (1) EP0416253B1 (en)
AT (1) AT122771T (en)
DE (2) DE3929955A1 (en)
DK (1) DK0416253T3 (en)
ES (1) ES2071708T3 (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0517624A1 (en) * 1991-06-04 1992-12-09 Sofrela S.A. Lamp with flexible connection, particularly adaptable to traffic lights
FR2714956A1 (en) * 1994-01-12 1995-07-13 3Sa Luminous signaling device, in particular intended to ensure safety beaconing.
EP1077346A2 (en) * 1999-08-19 2001-02-21 Autopal S.R.O. Signal lamp with LED light sources
EP1094271A2 (en) * 1999-10-21 2001-04-25 Ichikoh Industries Limited Small light-source module and light-source unit
EP0974485A3 (en) * 1998-07-24 2001-04-25 Stanley Electric Co., Ltd. Signal lamp for vehicle
EP0942225A3 (en) * 1998-03-13 2002-01-23 Stanley Electric Co., Ltd. Vehicle signal lighting unit
EP0949450A3 (en) * 1998-04-09 2002-02-13 REITTER &amp; SCHEFENACKER GmbH &amp; Co. KG Light, in particular tail light, for motor vehicles
EP1184619A3 (en) * 2000-08-30 2002-10-30 Visteon Global Technologies, Inc. Edge-lit light assembly
EP1077344A3 (en) * 1999-08-16 2004-01-28 FER Fahrzeugelektrik GmbH Lamp
EP1418381A2 (en) * 2002-11-06 2004-05-12 Koito Manufacturing Co., Ltd Vehicular headlamp employing semiconductor light-emitting element having improved light distribution
FR2851030A1 (en) * 2003-02-10 2004-08-13 Koito Mfg Co Ltd Vehicle headlight with source, reflector and lens
EP1459934A2 (en) * 2003-03-17 2004-09-22 DaimlerChrysler AG Vehicle headlamp
FR2853395A1 (en) * 2003-04-03 2004-10-08 Koito Mfg Co Ltd Vehicle headlight and semiconductor photoemissile element for vehicle headlight
WO2007057834A1 (en) * 2005-11-17 2007-05-24 Koninklijke Philips Electronics N.V. Lamp assembly
EP1388707A3 (en) * 2002-08-10 2007-09-19 Hella KGaA Hueck &amp; Co. Lighting unit for vehicles
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AT122771T (en) 1995-06-15
EP0416253A3 (en) 1992-02-19
EP0416253B1 (en) 1995-05-17
DE59009086D1 (en) 1995-06-22
DE3929955A1 (en) 1991-03-14
ES2071708T3 (en) 1995-07-01
DK0416253T3 (en) 1995-07-10
US5136483A (en) 1992-08-04

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