EP1936582A1 - Optics for signal emitter for installation in a traffic light - Google Patents

Optics for signal emitter for installation in a traffic light Download PDF

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Publication number
EP1936582A1
EP1936582A1 EP06026856A EP06026856A EP1936582A1 EP 1936582 A1 EP1936582 A1 EP 1936582A1 EP 06026856 A EP06026856 A EP 06026856A EP 06026856 A EP06026856 A EP 06026856A EP 1936582 A1 EP1936582 A1 EP 1936582A1
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EP
European Patent Office
Prior art keywords
led
shielding element
reflector
signaling
optics
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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
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EP06026856A
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German (de)
French (fr)
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EP1936582B1 (en
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Langmatz GmbH
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Lic Langmatz GmbH
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Publication date
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Priority to DE502006004203T priority Critical patent/DE502006004203D1/en
Priority to ES06026856T priority patent/ES2329400T3/en
Priority to AT06026856T priority patent/ATE436067T1/en
Priority to PL06026856T priority patent/PL1936582T3/en
Priority to EP06026856A priority patent/EP1936582B1/en
Publication of EP1936582A1 publication Critical patent/EP1936582A1/en
Application granted granted Critical
Publication of EP1936582B1 publication Critical patent/EP1936582B1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/06—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the lampholder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic 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
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a signal transmitter optics for installation in a traffic light, with a light source that illuminates a windshield.
  • the invention is particularly, but not exclusively suitable for small signal transmitter for cyclists and pedestrians.
  • the present invention has for its object to provide a signal transmitter optics for installation in a traffic light, in which the occurrence of phantom light is reduced.
  • the invention provides that the light source of the signal transmitter optics is arranged in the center of a reflector and that a tubular or funnel-shaped shielding element in a small axial distance in front of the light source in Center of the reflector is absorbed by the reflector reflected sun rays.
  • the light source is preferably an LED that is of the side emitting type.
  • Such an LED emits its light mainly laterally in a cone of light with a predetermined opening angle and only a small amount of light forward, i. in the direction of the longitudinal axis of the LED and the signal transmitter optics.
  • Such a side-emitting LED is available, for example, under the trademark Luxeon Star in the required color from Lumileds Lighting U.S., LLC.
  • the longitudinal central axis of the hollow shielding element substantially coincides with the longitudinal central axis of the LED and the reflector.
  • the distance of the shielding element from the light source is expediently dimensioned so that the shielding element does not shield or absorb the lateral radiation of the LED, i. the rear edge of the shield should be positioned substantially at the edge of the laterally emitted from the LED light cone, so that caused by the LED on the windscreen illuminance is not or not significantly reduced by the shield.
  • the shielding member has a pipe shape or a funnel shape, the light beams emitted from the light source in the direction of its longitudinal axis and at an acute angle thereto are not absorbed by the shielding member but can pass through the hollow shielding member unhindered.
  • the shield member may have a cylindrical tube shape, a funnel shape that widens with increasing distance from the LED is preferable.
  • the opening angle of the cylindrical shielding element is expediently in the range of 20 ° to 40 °. This can largely homogeneous illumination of the windshield be ensured by the LED.
  • the peripheral wall of the shielding can, seen in longitudinal section, run straight, or take, for example, a stepped or arcuate course.
  • the shielding element is black, with which it is best to be able to absorb the rays of the sun which are incident into the signaling device optics and reflected by the reflector towards the center thereof.
  • the shield consists of a black-colored plastic, without the invention being limited thereto.
  • the shielding is attached to the holder of the LED.
  • This holder is preferably a cooling plate.
  • the shielding member may comprise support arms which are latched into holes of the cooling plate.
  • the shielding element is fastened to the windshield of the signal transmitter optics.
  • the light source consists of a (single) LED
  • the front window of the signal transmitter optics is preferably not colored, but the signal color of the signal generator is caused in this case by a green, yellow or red LED.
  • the reflector may have any suitable shape, it may for example be a parabolic mirror. However, it is preferred that the reflector has alternately concentric ring sections of a first and a second type, which adjoin one another. These ring portions begin with a ring portion of the first type at the inner edge of the opening of the reflector, in which the LED protrudes, wherein a ring portion of a second type connects and this sequence of first and second ring sections continues up to an outer edge region of the reflector, which may consist of abutting ring sections of the second type or may be free of the above-mentioned ring sections.
  • the ring sections of the first type are arranged at such angles to the LED that they do not reflect light rays forward to the windshield of the signal transmitter optics. These ring sections thus contribute practically to the illumination of the windshield of the signal transmitter and also reflect virtually no incident sun rays towards the center of the reflector.
  • the ring sections of the second type are arranged at angles to the LED such that they reflect the light rays approximately parallel to the longitudinal axis of the LED towards the windshield, thereby providing a highly homogeneous illumination of the windshield by choosing appropriate dimensions and angles of the ring sections.
  • the ring portions of this preferred embodiment of a reflector reflect the incident sun rays obliquely from above into the signal transmitter optics to the region of the longitudinal central axis of the reflector, where a large part of the incident sun rays is absorbed by the shielding.
  • the shielding element of the invention absorbs 20% to 70%, in most cases 35% to 60% of the incident sunbeams.
  • the invention thus provides a signal transmitter optics in which the occurrence of phantom light is significantly reduced by simple, inexpensive means.
  • FIG. 1 shows the signal transmitter optics in the installed state in a traffic light in a vertical section.
  • An LED 1 is mounted on a cooling plate 2, behind which is at a distance a circuit board 3, which is electrically connected to the LED 1 in a manner not shown.
  • the LED 1 is arranged in the center of a reflector 4, in whose central opening it protrudes.
  • a funnel-shaped shielding element 5 is arranged, whose longitudinal central axis coincides with the longitudinal central axis of the LED 1 and the longitudinal central axis of the reflector 4.
  • the diameter of the funnel-shaped shielding element 5 increases continuously towards a lens 6, which forms the front end of the signal generator.
  • the components of the signal transmitter optics are inserted into an insert housing 7, which in turn can be inserted into a housing 8 of a traffic light 9. With the help of molded or attached mounting arms 10, the traffic light 9 is attached to an associated mast.
  • FIG. 2 shows in an enlarged view of the insert housing 7 with the signal transmitter optics, but without the shielding. 5
  • FIG. 3 shows the LED 1 with its side beam 11 in cooperation with the reflector 4 (right half of the picture) and the effect of its shielding element 5 in obliquely incident sunlight, and that at an angle of incidence of 10 °.
  • the reflector 4 subsequently alternately contains ring sections 12 of a first type and ring sections 13 of a second type.
  • the ring portion 12 of the first type which are rectilinear in cross-section, that is flat, are arranged at such angles to the LED 1, that the straight lines (cross-sectionally) containing these ring sections 12, by the ideal zero point or starting point 14 of the light cone 11 run ,
  • the ring sections 12 of the first type do not reflect light in the direction of the longitudinal axis of the LED 1 or the longitudinal axis of the signal generator optics according to the invention.
  • the ring portions 13 of the second type are arranged at angles to the LED 1 such that the respective light beams 16 incident on the central circular lines 15 of the ring portions 13 are reflected parallel to the longitudinal axis of the signal transmitter optics.
  • the training is such that the lines 16 are the same distance from each other.
  • the shielding element 5 is arranged at such an axial distance from the LED 1 that its straight edge edge 17 does not project straight into the light cone 11.
  • the shielding element 5 is hollow and has a funnel shape, through the interior of the shielding element 5, the beams of light emitted by the LED 1 in the longitudinal direction of the signal transmitter optics and at an acute angle thereto can be used Shielding element 5 pass freely. These rays of light are in FIG. 3 indicated by the reference numeral 18.
  • the sun's rays 19 incident at an angle to the longitudinal axis of the beacon optics are emitted by the reflector 4, i. from its ring portions 13 of the second type to the center arranged in the reflector 4 arranged shielding 5, where they are absorbed by the black color of the shielding element 5. This also applies to the incident on the inner surface of the shielding element 5 sun rays 20.
  • FIG. 4 shows that the funnel-shaped shielding member 5 is provided with support legs 21, which are the holes 22 in the cooling plate 2, on which the LED 1 is fixed, are engaged.
  • FIG. 5 shows an alternative embodiment in which the shielding element 5 is fixed with a support arm 23 on a front screen 24 which is fixed to the edge of the reflector 4.
  • FIG. 6 shows a side emitting LED 1 in a arranged on a board 25 state.
  • Such an LED is - as mentioned above - available under the name Luxeon Star on the market.
  • FIG. 7 shows a perspective view of the traffic light 9 with the built-signaling device optics.
  • the front lens 6 is covered by a front part 25 of the traffic light 9.

Abstract

The signal generating optical device has a light source, which lights up a windshield. The light emitting diode (LED) light source (1) is side-emitting type and is arranged in the center of a reflector (4). A pipe or funnel shaped screen element (5) at a small axial distance from the LED is arranged in the center of the reflector and absorbs the reflected solar radiation of the reflector.

Description

Die Erfindung betrifft eine Signalgeberoptik zum Einbau in eine Verkehrsampel, mit einer Lichtquelle, die eine Frontscheibe beleuchtet. Die Erfindung ist insbesondere, jedoch nicht ausschließlich für Kleinsignalgeber für Radfahrer und Fußgänger geeignet.The invention relates to a signal transmitter optics for installation in a traffic light, with a light source that illuminates a windshield. The invention is particularly, but not exclusively suitable for small signal transmitter for cyclists and pedestrians.

Bei einem niedrigen Sonnenstand und frontaler Beleuchtungsrichtung werden bei den bisher verwendeten Verkehrsampeln Phantomlichteigenschaften erkennbar. Das vom Inneren einer Verkehrsampel zurückgestrahlte Sonnenlicht macht es schwierig zu erkennen, ob ein Signalgeber durch seine eingebaute Lichtquelle oder durch das einfallende Sonnenlicht beleuchtet ist, wodurch eine erhebliche Verkehrsgefährdung hervorgerufen werden kann.With a low sun position and frontal illumination direction, phantom light properties become recognizable in the traffic lights used hitherto. The sunlight reflected back from the interior of a traffic light makes it difficult to detect whether a signal generator is illuminated by its built-in light source or by the incident sunlight, whereby a significant traffic hazard can be caused.

Der vorliegenden Erfindung liegt die Aufgabe zugrunde, eine Signalgeberoptik zum Einbau in eine Verkehrsampel anzugeben, bei der das Auftreten von Phantomlicht reduziert ist.The present invention has for its object to provide a signal transmitter optics for installation in a traffic light, in which the occurrence of phantom light is reduced.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Patentanspruchs 1 gelöst.This object is achieved by the features of claim 1.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous embodiments of the invention are characterized in the subclaims.

Die Erfindung sieht vor, dass die Lichtquelle der Signalgeberoptik im Zentrum eines Reflektors angeordnet ist und dass sich ein rohr- oder trichterförmiges Abschirmelement in einem kleinen axialen Abstand vor der Lichtquelle im Zentrum des Reflektors befindet, das von dem Reflektor reflektierte Sonnenstrahlen absorbiert.The invention provides that the light source of the signal transmitter optics is arranged in the center of a reflector and that a tubular or funnel-shaped shielding element in a small axial distance in front of the light source in Center of the reflector is absorbed by the reflector reflected sun rays.

Bei der Lichtquelle handelt es sich bevorzugt um eine LED, die vom den seiten-emittierenden (side emitting) Typ ist. Eine derartige LED strahlt ihr Licht überwiegend seitlich in einem Lichtkegel mit vorbestimmtem Öffnungswinkel ab und nur eine geringe Lichtmenge nach vorne, d.h. in Richtung der Längsachse der LED und der Signalgeberoptik. Eine derartige seiten-emittierende LED ist beispielsweise unter der Marke Luxeon Star in der jeweils benötigten Farbe von der Firma Lumileds Lighting U.S., LLC erhältlich.The light source is preferably an LED that is of the side emitting type. Such an LED emits its light mainly laterally in a cone of light with a predetermined opening angle and only a small amount of light forward, i. in the direction of the longitudinal axis of the LED and the signal transmitter optics. Such a side-emitting LED is available, for example, under the trademark Luxeon Star in the required color from Lumileds Lighting U.S., LLC.

Dabei ist mit Vorteil vorgesehen, dass die Längsmittelachse des hohlen Abschirmelementes im wesentlichen mit der Längsmittelachse der LED und des Reflektors übereinstimmt.It is advantageously provided that the longitudinal central axis of the hollow shielding element substantially coincides with the longitudinal central axis of the LED and the reflector.

Der Abstand des Abschirmelementes von der Lichtquelle ist zweckmäßigerweise so bemessen, dass das Abschirmelement die seitliche Strahlung der LED nicht abschirmt bzw. absorbiert, d.h. die rückseitige Randkante des Abschirmelementes sollte im wesentlichen am Rand des von der LED seitlich abgestrahlten Lichtkegels positioniert sein, so dass die von der LED auf der Frontscheibe hervorgerufene Beleuchtungsstärke durch das Abschirmelement nicht oder nicht merklich reduziert wird. Da das Abschirmelement eine Rohrform oder Trichterform hat, werden auch die von der Lichtquelle in Richtung Ihrer Längsachse und im spitzen Winkel zu dieser ausgesandten Lichtstrahlen von dem Abschirmelement nicht absorbiert, sondern können das hohle Abschirmelement ungehindert passieren.The distance of the shielding element from the light source is expediently dimensioned so that the shielding element does not shield or absorb the lateral radiation of the LED, i. the rear edge of the shield should be positioned substantially at the edge of the laterally emitted from the LED light cone, so that caused by the LED on the windscreen illuminance is not or not significantly reduced by the shield. Since the shielding member has a pipe shape or a funnel shape, the light beams emitted from the light source in the direction of its longitudinal axis and at an acute angle thereto are not absorbed by the shielding member but can pass through the hollow shielding member unhindered.

Obwohl das Abschirmelement beispielsweise eine zylindrische Rohrform haben kann, ist eine Trichterform bevorzugt, die sich mit zunehmendem Abstand von der LED verbreitert. Der Öffnungswinkel des zylindrischen Abschirmelementes liegt dabei zweckmäßigerweise im Bereich von 20 ° bis 40 °. Hierdurch kann weitgehend homogene Beleuchtung der Frontscheibe durch die LED sicher gestellt werden.For example, although the shield member may have a cylindrical tube shape, a funnel shape that widens with increasing distance from the LED is preferable. The opening angle of the cylindrical shielding element is expediently in the range of 20 ° to 40 °. This can largely homogeneous illumination of the windshield be ensured by the LED.

Die Umfangswand des Abschirmelementes kann, im Längsschnitt gesehen, geradlinig verlaufen, oder aber beispielsweise einen stufenförmigen oder bogenförmigen Verlauf nehmen.The peripheral wall of the shielding can, seen in longitudinal section, run straight, or take, for example, a stepped or arcuate course.

Mit besonderem Vorteil ist vorgesehen, dass das Abschirmelement schwarz ist, womit es am besten die in die Signalgeberoptik einfallenden und von dem Reflektor zu dessen Zentrum hin reflektierten Sonnenstrahlen absorbieren kann. Zweckmäßigerweise besteht das Abschirmelement aus einem schwarz eingefärbten Kunststoff, ohne dass die Erfindung hierauf beschränkt ist.It is particularly advantageously provided that the shielding element is black, with which it is best to be able to absorb the rays of the sun which are incident into the signaling device optics and reflected by the reflector towards the center thereof. Conveniently, the shield consists of a black-colored plastic, without the invention being limited thereto.

In weiterer Ausgestaltung der Erfindung kann vorgesehen sein, dass das Abschirmelement an der Halterung der LED befestigt ist. Diese Halterung ist vorzugsweise eine Kühlplatte. Das Abschirmelement kann Stützarme aufweisen, die in Löcher der Kühlplatte eingerastet sind.In a further embodiment of the invention can be provided that the shielding is attached to the holder of the LED. This holder is preferably a cooling plate. The shielding member may comprise support arms which are latched into holes of the cooling plate.

Bei einer anderen Ausführungsform kann vorgesehen sein, dass das Abschirmelement an der Frontscheibe der Signalgeberoptik befestigt ist.In another embodiment, it can be provided that the shielding element is fastened to the windshield of the signal transmitter optics.

Wenn - wie dies bevorzugt ist - die Lichtquelle aus einer (einzigen) LED besteht, ist die Frontscheibe der Signalgeberoptik bevorzugt nicht gefärbt, sondern die Signalfarbe des Signalgebers wird in diesem Fall durch eine grüne, gelbe oder rote LED hervorgerufen.If - as is preferred - the light source consists of a (single) LED, the front window of the signal transmitter optics is preferably not colored, but the signal color of the signal generator is caused in this case by a green, yellow or red LED.

Der Reflektor kann jede geeignete Form haben, er kann beispielsweise ein Parabolspiegel sein. Bevorzugt ist jedoch, dass der Reflektor abwechselnd konzentrische Ringabschnitte eines ersten und eines zweiten Typs aufweist, die aneinander anschließen. Diese Ringabschnitte beginnen mit einem Ringabschnitt des ersten Typs am inneren Rand der Öffnung des Reflektors, in die die LED hineinragt, wobei sich ein Ringabschnitt eines zweiten Typs anschließt und sich diese Folge erster und zweiter Ringabschnitte bis zu einem äußeren Randbereich des Reflektors fortsetzt, der aus aneinander gesetzten Ringabschnitten des zweiten Typs bestehen oder frei von den oben erwähnten Ringabschnitten sein kann. Dabei sind die Ringabschnitte des ersten Typs in solchen Winkeln zu der LED angeordnet, dass sie keine Lichtstrahlen nach vorne zu der Frontscheibe der Signalgeberoptik reflektieren. Diese Ringabschnitte tragen somit praktisch nicht zur Beleuchtung der Frontscheibe des Signalgebers bei und reflektieren auch praktisch keine einfallenden Sonnenstrahlen zum Zentrum des Reflektors hin.The reflector may have any suitable shape, it may for example be a parabolic mirror. However, it is preferred that the reflector has alternately concentric ring sections of a first and a second type, which adjoin one another. These ring portions begin with a ring portion of the first type at the inner edge of the opening of the reflector, in which the LED protrudes, wherein a ring portion of a second type connects and this sequence of first and second ring sections continues up to an outer edge region of the reflector, which may consist of abutting ring sections of the second type or may be free of the above-mentioned ring sections. In this case, the ring sections of the first type are arranged at such angles to the LED that they do not reflect light rays forward to the windshield of the signal transmitter optics. These ring sections thus contribute practically to the illumination of the windshield of the signal transmitter and also reflect virtually no incident sun rays towards the center of the reflector.

Die Ringabschnitte des zweiten Typs sind in solchen Winkeln zu der LED angeordnet, dass sie die Lichtstrahlen näherungsweise parallel zu der Längsachse der LED in Richtung der Frontscheibe reflektieren, wobei durch Wahl geeigneter Abmessungen und Winkel der Ringabschnitte eine hochgradig homogene Beleuchtung der Frontscheibe hervorgerufen wird. Umgekehrt reflektieren die Ringabschnitte dieser bevorzugten Ausführungsform eines Reflektors die schräg von oben in die Signalgeberoptik einfallenden Sonnenstrahlen zum Bereich der Längsmittelachse des Reflektors, wo ein großer Teil der einfallenden Sonnenstrahlen von dem Abschirmelement absorbiert wird. Bei Versuchen ist ermittelt worden, dass das erfindungsgemäße Abschirmelement 20% bis 70%, in den meisten Fällen 35% bis 60% der einfallenden Sonnenstrahlen absorbiert.The ring sections of the second type are arranged at angles to the LED such that they reflect the light rays approximately parallel to the longitudinal axis of the LED towards the windshield, thereby providing a highly homogeneous illumination of the windshield by choosing appropriate dimensions and angles of the ring sections. Conversely, the ring portions of this preferred embodiment of a reflector reflect the incident sun rays obliquely from above into the signal transmitter optics to the region of the longitudinal central axis of the reflector, where a large part of the incident sun rays is absorbed by the shielding. In experiments it has been determined that the shielding element of the invention absorbs 20% to 70%, in most cases 35% to 60% of the incident sunbeams.

Die Erfindung sieht somit eine Signalgeberoptik vor, bei der mit einfachen, kostengünstigen Mitteln das Auftreten von Phantomlicht signifikant reduziert ist.The invention thus provides a signal transmitter optics in which the occurrence of phantom light is significantly reduced by simple, inexpensive means.

Es wird betont, dass die oben beschriebenen fakultativen Merkmale, wie sie auch in den Unteransprüchen angegeben sind, auf jegliche Art im Rahmen der vorliegenden Erfindung einzeln miteinander kombiniert werden können.It is emphasized that the facultative features described above, as also indicated in the subclaims, can be individually combined with one another in any way in the context of the present invention.

Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung einer bevorzugten Ausführungsform der Erfindung sowie anhand der Zeichnungen. Dabei zeigen:

Figur 1
einen Vertikalschnitt durch eine erfindungsgemäße Signalgeberoptik, eingebaut in eine Verkehrsampel;
Figur 2
eine vergrößerte Darstellung der Signalgeberoptik in einem Einsatzgehäuse, wobei das Abschirmelement weggelassen ist;
Figur 3
die Strahlungseigenschaft einer seiten-emittierenden LED im Zusammenwirken mit einer Ausführungsform des Reflektors (rechte Bildhälfte) sowie eine Darstellung der Wirkung des Abschirmelementes (linke Bildhälfte);
Figur 4
die Befestigung des Abschirmelementes an einer Kühlplatte;
Figur 5
die Befestigung des Abschirmelementes an einer Frontscheibe der Signalgeberoptik;
Figur 6
eine perspektivische Ansicht einer seiten-emittierenden LED und
Figur 7
die Signalgeberoptik in einer Verkehrsampel.
Further details of the invention will become apparent from the following description of a preferred embodiment of the invention and from the drawings. Showing:
FIG. 1
a vertical section through a signal generator optics according to the invention, installed in a traffic light;
FIG. 2
an enlarged view of the signaling device in an insert housing, wherein the shielding element is omitted;
FIG. 3
the radiation property of a side-emitting LED in cooperation with an embodiment of the reflector (right half of the image) and a representation of the effect of the shielding element (left half of the image);
FIG. 4
the attachment of the shielding to a cooling plate;
FIG. 5
the attachment of the shielding element to a windshield of the signal transmitter optics;
FIG. 6
a perspective view of a side-emitting LED and
FIG. 7
the signal transmitter optics in a traffic light.

Figur 1 zeigt die Signalgeberoptik im eingebauten Zustand in einer Verkehrsampel in einem Vertikalschnitt. Eine LED 1 ist auf einer Kühlplatte 2 befestigt, hinter der sich im Abstand eine Platine 3 befindet, die mit der LED 1 auf nicht gezeigte Weise elektrisch verbunden ist. Die LED 1 ist im Zentrum eines Reflektors 4 angeordnet, in dessen mittige Öffnung sie hineinragt. FIG. 1 shows the signal transmitter optics in the installed state in a traffic light in a vertical section. An LED 1 is mounted on a cooling plate 2, behind which is at a distance a circuit board 3, which is electrically connected to the LED 1 in a manner not shown. The LED 1 is arranged in the center of a reflector 4, in whose central opening it protrudes.

In einem kleinen axialen Abstand von der LED 1 ist ein trichterförmiges Abschirmelement 5 angeordnet, dessen Längsmittelachse mit der Längsmittelachse der LED 1 und der Längsmittelachse des Reflektors 4 zusammen fällt. Der Durchmesser des trichterförmigen Abschirmelementes 5 vergrößert sich kontinuierlich zu einer Streuscheibe 6 hin, die den vorderen Abschluss des Signalgebers bildet. Die Bauteile der Signalgeberoptik sind in ein Einsatzgehäuse 7 eingesetzt, das seinerseits in ein Gehäuse 8 einer Verkehrsampel 9 einsetzbar ist. Mit Hilfe von angeformten oder angebrachten Befestigungsarmen 10 wird die Verkehrsampel 9 an einen zugehörigen Mast befestigt.At a small axial distance from the LED 1, a funnel-shaped shielding element 5 is arranged, whose longitudinal central axis coincides with the longitudinal central axis of the LED 1 and the longitudinal central axis of the reflector 4. The diameter of the funnel-shaped shielding element 5 increases continuously towards a lens 6, which forms the front end of the signal generator. The components of the signal transmitter optics are inserted into an insert housing 7, which in turn can be inserted into a housing 8 of a traffic light 9. With the help of molded or attached mounting arms 10, the traffic light 9 is attached to an associated mast.

Figur 2 zeigt in einer vergrößerten Darstellung das Einsatzgehäuse 7 mit der Signalgeberoptik, jedoch ohne das Abschirmelement 5. FIG. 2 shows in an enlarged view of the insert housing 7 with the signal transmitter optics, but without the shielding. 5

Figur 3 zeigt die LED 1 mit ihrem seitlichen Lichtkegel 11 im Zusammenwirken mit dem Reflektor 4 (rechte Bildhälfte) sowie die Wirkung ihres Abschirmelementes 5 bei schräg einfallendem Sonnenlicht, und zwar bei einem Einfallswinkel von 10°. Der Reflektor 4 enthält aneinander anschließend abwechselnd Ringabschnitte 12 eines ersten Typs und Ringabschnitte 13 eines zweiten Typs. Die Ringabschnitt 12 ersten Typs, die querschnittlich geradlinig, d.h. eben ausgebildet sind, sind in solchen Winkeln zu der LED 1 angeordnet, dass die Geraden, die (querschnittlich betrachtet) diese Ringabschnitte 12 enthalten, durch den ideellen Nullpunkt oder Ausgangspunkt 14 des Lichtkegels 11 verlaufen. Damit reflektieren die Ringabschnitte 12 des ersten Typs kein Licht in Richtung der Längsachse der LED 1 bzw. der Längsachse der erfindungsgemäßen Signalgeberoptik. FIG. 3 shows the LED 1 with its side beam 11 in cooperation with the reflector 4 (right half of the picture) and the effect of its shielding element 5 in obliquely incident sunlight, and that at an angle of incidence of 10 °. The reflector 4 subsequently alternately contains ring sections 12 of a first type and ring sections 13 of a second type. The ring portion 12 of the first type, which are rectilinear in cross-section, that is flat, are arranged at such angles to the LED 1, that the straight lines (cross-sectionally) containing these ring sections 12, by the ideal zero point or starting point 14 of the light cone 11 run , Thus, the ring sections 12 of the first type do not reflect light in the direction of the longitudinal axis of the LED 1 or the longitudinal axis of the signal generator optics according to the invention.

Die Ringabschnitte 13 des zweiten Typs sind in solchen Winkeln zu der LED 1 angeordnet, dass die jeweils auf die mittigen Kreislinien 15 der Ringabschnitte 13 auftreffenden Lichtstrahlen 16 parallel zu der Längsachse der Signalgeberoptik reflektiert werden. Die Ausbildung ist so getroffen, dass die Linien 16 denselben Abstand voneinander haben.The ring portions 13 of the second type are arranged at angles to the LED 1 such that the respective light beams 16 incident on the central circular lines 15 of the ring portions 13 are reflected parallel to the longitudinal axis of the signal transmitter optics. The training is such that the lines 16 are the same distance from each other.

Durch diese Ausbildung wird eine weitgehend homogene Beleuchtung der Frontscheibe einer Verkehrsampel 9 hervorgerufen.By this training, a largely homogeneous illumination of the windscreen of a traffic light 9 is caused.

Das Abschirmelement 5 ist in einem solchen axialen Abstand von der LED 1 angeordnet, das seine rückwärtige Randkante 17 gerade nicht in den Lichtkegel 11 hineinragt.The shielding element 5 is arranged at such an axial distance from the LED 1 that its straight edge edge 17 does not project straight into the light cone 11.

Da das Abschirmelement 5 hohl ist und eine Trichterform hat, können durch das Innere des Abschirmelementes 5 die in Längsrichtung der Signalgeberoptik und im spitzen Winkel hierzu von der LED 1 ausgesandten Lichtstrahlen das Abschirmelement 5 frei passieren. Diese Lichtstrahlen sind in Figur 3 mit dem Bezugszeichen 18 angedeutet.Since the shielding element 5 is hollow and has a funnel shape, through the interior of the shielding element 5, the beams of light emitted by the LED 1 in the longitudinal direction of the signal transmitter optics and at an acute angle thereto can be used Shielding element 5 pass freely. These rays of light are in FIG. 3 indicated by the reference numeral 18.

Die im Winkel zu der Längsachse der Signalgeberoptik einfallenden Sonnenstrahlen 19 werden von dem Reflektor 4, d.h. von dessen Ringabschnitten 13 des zweiten Typs zu dem mittig in dem Reflektor 4 angeordneten Abschirmelement 5 reflektiert, wo sie von der schwarzen Farbe des Abschirmelementes 5 absorbiert werden. Dies trifft auch für die auf die Innenfläche des Abschirmelementes 5 auftreffenden Sonnenstrahlen 20 zu.The sun's rays 19 incident at an angle to the longitudinal axis of the beacon optics are emitted by the reflector 4, i. from its ring portions 13 of the second type to the center arranged in the reflector 4 arranged shielding 5, where they are absorbed by the black color of the shielding element 5. This also applies to the incident on the inner surface of the shielding element 5 sun rays 20.

Figur 4 zeigt, dass das trichterförmige Abschirmelement 5 mit Stützfüßen 21 versehen ist, die den Löchern 22 in der Kühlplatte 2, auf der die LED 1 befestigt ist, eingerastet sind. FIG. 4 shows that the funnel-shaped shielding member 5 is provided with support legs 21, which are the holes 22 in the cooling plate 2, on which the LED 1 is fixed, are engaged.

Figur 5 zeigt eine alternative Ausführungsform, bei der das Abschirmelement 5 mit einem Stützarm 23 an einer Frontscheibe 24 befestigt ist, die am Rand des Reflektors 4 befestigt ist. FIG. 5 shows an alternative embodiment in which the shielding element 5 is fixed with a support arm 23 on a front screen 24 which is fixed to the edge of the reflector 4.

Figur 6 zeigt eine seiten-emittierende LED 1 in einem auf einer Platine 25 angeordneten Zustand. Eine solche LED ist - wie oben erwähnt - unter der Bezeichnung Luxeon Star am Markt erhältlich. FIG. 6 shows a side emitting LED 1 in a arranged on a board 25 state. Such an LED is - as mentioned above - available under the name Luxeon Star on the market.

Figur 7 zeigt eine perspektivische Ansicht der Verkehrsampel 9 mit der eingebauten Signalgeberoptik. Die vordere Streuscheibe 6 ist von einem Frontteil 25 der Ampel 9 überdeckt. FIG. 7 shows a perspective view of the traffic light 9 with the built-signaling device optics. The front lens 6 is covered by a front part 25 of the traffic light 9.

Claims (10)

Signalgeberoptik zum Einbau in eine Verkehrsampel, mit einer Lichtquelle, die eine Frontscheibe beleuchtet,
dadurch gekennzeichnet,
dass die Lichtquelle eine LED (1) ist, die von dem seiten-emittierenden Typ ist und im Zentrum eines Reflektors (4) angeordnet ist,
und dass ein rohr- oder trichterförmiges Abschirmelement (5) in einem kleinen axialen Abstand von der LED (1) im Zentrum des Reflektors (4) angeordnet ist und von dem Reflektor (4) reflektierte Sonnenstrahlen absorbiert.Signaling optics for installation in a traffic light, with a light source illuminating a windscreen,
characterized,
that the light source is a LED (1), which is of the lateral emitting type and in the center of a reflector (4) is arranged,
and in that a tubular or funnel-shaped shielding element (5) is arranged at a small axial distance from the LED (1) in the center of the reflector (4) and absorbs solar rays reflected by the reflector (4). Signalgeberoptik nach Anspruch 1,
dadurch gekennzeichnet,
dass die Längsmittelachse des Abschirmelementes (5) im wesentlichen mit der Längsmittelachse der LED (1) und des Reflektors (4) übereinstimmt.Signaling optics according to claim 1,
characterized,
that the longitudinal center axis of the shielding element (5) substantially coincides with the longitudinal central axis of the LED (1) and the reflector (4). Signalgeberoptik nach Anspruch 1 oder 2,
dadurch gekennzeichnet,
dass der axiale Abstand des Abschirmelementes (5) von der LED (1) so bemessen ist, dass die rückwärtige Randkante des Abschirmelementes (5) im wesentlichen am Randbereich des seitlichen Lichtkegels (11) der LED (1) angeordnet ist.Signaling optical system according to claim 1 or 2,
characterized,
that the axial spacing of the shielding element (5) from the LED (1) is dimensioned such that the rear edge of the shielding (5) (11) of the LED (1) is located substantially at the edge region of the lateral light cone. Signalgeberoptik nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet,
dass das Abschirmelement (5) eine Trichterform hat, die sich mit zunehmenden Abstand von der LED (1) verbreitert.Signaling optical system according to one of claims 1 to 3,
characterized,
in that the shielding element (5) has a funnel shape which widens with increasing distance from the LED (1). Signalgeberoptik nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
dass das Abschirmelement (5) an der Halterung der LED (1) befestigt ist.Signaling optical system according to one of claims 1 to 4,
characterized,
in that the shielding element (5) is fastened to the holder of the LED (1). Signalgeberoptik nach Anspruch 5,
dadurch gekennzeichnet,
dass die Halterung eine Kühlplatte (2) ist, und dass das Abschirmelement (5) Stützfüße (24) aufweist, die in die Kühlplatte (3) eingerastet sind.Signaling optics according to claim 5,
characterized,
in that the holder is a cooling plate (2), and in that the shielding element (5) has supporting feet (24) which are latched into the cooling plate (3). Signalgeberoptik nach einem der Ansprüche 1 bis 4,
dadurch gekennzeichnet,
dass das Abschirmelement (5) an einer Frontscheibe (24) der Signalgeberoptik befestigt ist.Signaling optical system according to one of claims 1 to 4,
characterized,
in that the shielding element (5) is fastened to a windscreen (24) of the signaling device optics. Signalgeberoptik nach einem der Ansprüche 1 bis 7,
dadurch gekennzeichnet,
dass das Abschirmelement (5) schwarz ist.Signaling optical system according to one of claims 1 to 7,
characterized,
that the shielding element (5) is black. Signalgeberoptik nach einem der Ansprüche 1 bis 8,
dadurch gekennzeichnet,
dass der Reflektor (4) abwechselnd konzentrisch angeordnete Ringabschnitte eines ersten Typs (12) und eines zweiten Typs (13) aufweist, wobei die Ringabschnitte des ersten Typs (12) in solchen Winkeln zu der LED (1) angeordnet sind, dass sie keine Lichtstrahlen zu der Frontscheibe reflektieren, und wobei die Ringabschnitte des zweiten Typs (13) in solchen Winkeln zu der LED (1) angeordnet sind, dass sie Lichtstrahlen näherungsweise parallel zu der Längsachse der Signalgeberoptik reflektieren.Signaling optical system according to one of claims 1 to 8,
characterized,
in that the reflector (4) has alternately concentrically arranged ring sections of a first type (12) and a second type (13), wherein the ring sections of the first type (12) are arranged at such angles to the LED (1) that they do not emit light rays reflect to the windshield, and wherein the second type ring portions (13) are positioned at angles to the LED (1) such that they reflect light rays approximately parallel to the longitudinal axis of the transducer optics. Signalgeberoptik nach einem der Ansprüche 1 bis 9,
dadurch gekennzeichnet,
dass das Abschirmelement (5) 20% bis 70%, vorzugsweise 35% bis 60% der einfallenden Sonnenstrahlen absorbiert.Signaling optical system according to one of claims 1 to 9,
characterized,
that the shielding member (5) absorbs 20% to 70%, preferably 35% to 60% of the incident solar rays.
EP06026856A 2006-12-23 2006-12-23 Optics for signal emitter for installation in a traffic light Not-in-force EP1936582B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
DE502006004203T DE502006004203D1 (en) 2006-12-23 2006-12-23 Signaling optics for installation in a traffic light
ES06026856T ES2329400T3 (en) 2006-12-23 2006-12-23 OPTICAL BLOCK SIGNAL ISSUER FOR ASSEMBLY IN A TRAFFIC SEMAPHORE.
AT06026856T ATE436067T1 (en) 2006-12-23 2006-12-23 SIGNAL GENERATOR OPTICS FOR INSTALLATION IN A TRAFFIC TRAFFIC LAMP
PL06026856T PL1936582T3 (en) 2006-12-23 2006-12-23 Optics for signal emitter for installation in a traffic light
EP06026856A EP1936582B1 (en) 2006-12-23 2006-12-23 Optics for signal emitter for installation in a traffic light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06026856A EP1936582B1 (en) 2006-12-23 2006-12-23 Optics for signal emitter for installation in a traffic light

Publications (2)

Publication Number Publication Date
EP1936582A1 true EP1936582A1 (en) 2008-06-25
EP1936582B1 EP1936582B1 (en) 2009-07-08

Family

ID=37834190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06026856A Not-in-force EP1936582B1 (en) 2006-12-23 2006-12-23 Optics for signal emitter for installation in a traffic light

Country Status (5)

Country Link
EP (1) EP1936582B1 (en)
AT (1) ATE436067T1 (en)
DE (1) DE502006004203D1 (en)
ES (1) ES2329400T3 (en)
PL (1) PL1936582T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2295850A1 (en) * 2009-09-14 2011-03-16 Valeo Vision Lighting and/or signalling device for an automobile

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10300990A1 (en) * 2002-01-17 2003-07-31 Isolde Scharf LED light signaling system, especially for motor vehicle traffic signals, comprises an LED matrix with interspersed metallic plate elements to guide the output light cones and absorb incident sunlight, thus preventing ghosting
US20040212998A1 (en) * 2003-04-25 2004-10-28 Ferenc Mohacsi Sign illumination system
EP1528527A1 (en) * 2003-10-30 2005-05-04 Centro Ricerche Plast-Optica S.r.l. A light device, particularly a light panel for road signs or information to the public, or a motor-vehicle light

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10300990A1 (en) * 2002-01-17 2003-07-31 Isolde Scharf LED light signaling system, especially for motor vehicle traffic signals, comprises an LED matrix with interspersed metallic plate elements to guide the output light cones and absorb incident sunlight, thus preventing ghosting
US20040212998A1 (en) * 2003-04-25 2004-10-28 Ferenc Mohacsi Sign illumination system
EP1528527A1 (en) * 2003-10-30 2005-05-04 Centro Ricerche Plast-Optica S.r.l. A light device, particularly a light panel for road signs or information to the public, or a motor-vehicle light

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2295850A1 (en) * 2009-09-14 2011-03-16 Valeo Vision Lighting and/or signalling device for an automobile

Also Published As

Publication number Publication date
DE502006004203D1 (en) 2009-08-20
ATE436067T1 (en) 2009-07-15
EP1936582B1 (en) 2009-07-08
ES2329400T3 (en) 2009-11-25
PL1936582T3 (en) 2010-01-29

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