EP1535820A2 - Light signal - Google Patents

Light signal Download PDF

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Publication number
EP1535820A2
EP1535820A2 EP04090430A EP04090430A EP1535820A2 EP 1535820 A2 EP1535820 A2 EP 1535820A2 EP 04090430 A EP04090430 A EP 04090430A EP 04090430 A EP04090430 A EP 04090430A EP 1535820 A2 EP1535820 A2 EP 1535820A2
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EP
European Patent Office
Prior art keywords
led
light
range
optics
short
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
EP04090430A
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German (de)
French (fr)
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EP1535820B1 (en
EP1535820A3 (en
Inventor
Wolfgang Ernst
Alexander Otto
Norbert PÖPPLOW
Harald Walter
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.)
Siemens AG
Siemens Corp
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Siemens AG
Siemens Corp
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Publication date
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Priority to SI200430340T priority Critical patent/SI1535820T1/en
Priority to PL04090430T priority patent/PL1535820T3/en
Publication of EP1535820A2 publication Critical patent/EP1535820A2/en
Publication of EP1535820A3 publication Critical patent/EP1535820A3/en
Application granted granted Critical
Publication of EP1535820B1 publication Critical patent/EP1535820B1/en
Anticipated expiration legal-status Critical
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
    • B61L5/1809—Daylight signals
    • B61L5/1845—Optical systems, lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L2207/00—Features of light signals
    • B61L2207/02—Features of light signals using light-emitting diodes [LEDs]

Definitions

  • the invention relates to a light signal with LED modules according to the preamble of claim 1.
  • Illuminated or light signals based on LED (light-emitting diodes) instead from incandescent lamps are used in many areas, especially in the railway signal technology, increasingly applied. LEDs are comparatively inexpensive, durable and bright.
  • the following Explanations relate essentially to the Long-range and short-range representation of signal terms at railways without the claimed inventive subject limited to this application should be.
  • Known LED light signals consist essentially from a grid-like arrangement of LED, which each equipped with a reflector, where appropriate additionally at least one light-bundling optical element and a windscreen are provided.
  • the light distribution especially with regard to the near and far range, is often unsatisfactory. Through sunlight reflections on the surfaces of the optics and the LED can be at low Sun the resulting phantom light component such be significant that the recognizability of the intended signal concept is significantly impaired.
  • the signal brightness is often too low.
  • the invention is based on the object, a light signal of specify type generic, the optimum radiation characteristics having. It should be strived for, for different Mounting and observation points, curve radii of the Rail and detection distances a single emission to realize universal applicability of the To enable light signal.
  • the object is achieved with the characterizing Characteristics of claim 1 solved.
  • the desired radiation characteristic for near and far range results from the Assignment of multiple LED to a bundling optics, where at least a short-range LED interacts with a light guide, the LED light near the exit surface of the Optics conducts where it is relatively disordered, especially sideways and comes down.
  • the light distribution is at close range through the surface and edge design of the light guide influenced.
  • a change in the distribution characteristic, which mainly affects the distance, is due to the change in the surface geometry of Light exit surface of the optics possible.
  • LEDs are provided per LED module, wherein by the arrangement of the lower region of the optic absorbing sunlight blackened can be.
  • Preferably four standard LED used in SMD construction. The LED must not at the upper limit of their power range be operated, so to expect a prolonged life is.
  • the SMD design can also be used in modern chip-on-board technology be executed. In this way, there are several Compatible technologies for different LED designs available, which improves product availability becomes.
  • the four LEDs can depend on the desired security concepts connected differently with regard to the LED failures become.
  • a suitable solution for example a series connection of the four LEDs, but also other interconnections are conceivable.
  • the incident on the exit surface of the optic sunlight becomes completely on the sun from 10 ° and higher Absorption surface of the optics steered. As annoying remains only the slight surface reflection at the exit surface. It is particularly advantageous that no sunlight directly gets into the LED, so that the dreaded effect that the LED are excited by the sunlight to shine, not occurs. Only at even lower sun position and frontal A small amount of sunlight can be irradiated to the sunlight LED penetrate. But even then the active LED modules appear much brighter than the reflected sunlight.
  • the useful light of the LED goes through the optics virtually unhindered. As a result, the light efficiency is so good that already at a light output of 0.2 watts per LED module sufficient Light distribution is achievable.
  • the preferred SMD LED is not conventional reflectors have their tendency to reflect less than in the usual LED, which have a specular reflector. To limit the tendency to reflect even further, can using chop-on-board technology around the individual LED chip a black mat surface are formed.
  • the light signal will be several meters above the Floor set up with approximately horizontal radiation direction.
  • the optics would produce extreme phantom light, since the Light emission and solar radiation coincide could.
  • the existing optics on be mounted standing upside down. This results again a phantom light-poor arrangement.
  • suitable Orientation of the light signal at floor mounting and / or by shading direct sunlight on the Signal can be prevented.
  • the optics is housed in a housing, which advantageously in the vicinity of the light exit surface is sealingly inserted in a matrix plate and light entry side Has snap elements, in which a LED-populated Board is almost locked.
  • the energization of four LEDs on the board can be made via two connecting wires, which together with other LED modules over a Multiple plug connected to an associated power source are.
  • the LED board can be put into a small plastic case glued, which is above each of the four LEDs Lens formed if the LED itself no lens or optics having. This is especially the case with SMD construction.
  • the lenses focus the light and increase the light efficiency.
  • a dowel be provided, wherein the optical housing by pressing is pressed into the matrix plate plastically-elastic and this causes a good seal.
  • the LED according to claim 4 with devices connected for air cooling. Temperature has the biggest Influence on the life of an LED.
  • the performance limits are due to the maximum allowable temperature of the internal LED components and the heat loss during operation limited. On the one hand, this determines the internal heat flow between the LED components the maximum possible Limit load of a LED; On the other hand, the heat needs to be outside the LED can be derived.
  • a good heat dissipation also lowers the temperature level inside the LED and increases it according to the life. When crossing the set operating parameters decreases the life of the LED due to overheating rapidly. But even with very strong underrun The values can affect the service life since internal processes do not yet proceed as planned.
  • FIG. 1 An essential component of a light signal is that shown in FIG 1, equipped with four LEDs 1a, 1b, 1c and 1d Board 2.
  • the current supply of the LED 1a, 1b, 1c and 1d takes place via two connection wires 3a and 3b.
  • the two upper LEDs 1a and 1b are light exit side with optical fibers 4a and 4b a illustrated in Figure 2 optics 5 connected.
  • the both arranged approximately centrally on the board 2 LED 1c and 1d radiate their light on the upper part of a lens body 6 of the optics 5.
  • the lower part of the lens body 6 is both light entry side and coat side with a Absorption surface 7 provided for sunlight.
  • FIG. 3 shows the LED board 2 in the assembled state.
  • the optics 5 is housed in a housing 8, which is close to the light exit surface the optic 5 in a matrix plate 9 sealing is pressed and rear locking elements for insertion the LED board 2 has.
  • a housing 8 which is close to the light exit surface the optic 5 in a matrix plate 9 sealing is pressed and rear locking elements for insertion the LED board 2 has.
  • LED modules 10 fully populated matrix plate 9, which is virtually the radiating surface of the light signal is shown in FIG. 4.
  • the LED 1a. 1b. 1c, 1d with front lenses 11 are equipped for pre-focusing the LED light and that the LED board 2 for heat dissipation with a rib-shaped Heat sink 12 is connected.
  • the light of the upper LED 1a and 1b, which is irradiated in the optical fibers 4a and 4b becomes thereby relatively wide, in particular down and to the side scattered, so that an optimal recognizability of the signal concept at close range.
  • Some near-field rays are marked with 13.
  • the lens body 6 beams 14 which are essentially of from the light of the LEDs 1c and 1d.
  • Incident sunlight 15 is above a sun's position of 10 ° above the Horizon through the optics 5 completely on the absorption surface 7 directs that phantom light can not occur.
  • the invention is not limited to the above Embodiment. Rather, it is a number of variants conceivable, which also with fundamentally different kind Execution of the features of the invention make use.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Cookers (AREA)
  • Details Of Television Scanning (AREA)
  • Silicon Polymers (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Traffic Control Systems (AREA)
  • Audible And Visible Signals (AREA)
  • Gyroscopes (AREA)
  • Led Device Packages (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

Die Erfindung betrifft ein Lichtsignal mit einer Mehrzahl im Wesentlichen gleichartiger LED-Module (10), insbesondere zur Fernbereichs- und Nahbereichs-Darstellung von Signalbegriffen bei schienengebundenen Verkehrswegen. Um eine Abstrahlcharakteristik, die für universelle Verwendbarkeit des Lichtsignals geeignet ist, zu realisieren, ist erfindungsgemäß vorgesehen, dass jedes LED-Modul (10) mindestens eine Nahbereichs-LED (1a, 1b) und mindestens eine Fernbereichs-LED (1c, 1d) sowie eine das LED-Licht bündelnde Optik (5) aufweist, wobei die Nahbereichs-LED (1a, 1b) lichtaustrittsseitig mit einem zumindest teilweise in die Optik (5) integrierten Lichtleiter (4a, 4b) verbunden ist.

Figure 00000001
The invention relates to a light signal with a plurality of substantially similar LED modules (10), in particular for long-range and short-range representation of signal terms in rail-bound traffic routes. In order to realize a radiation characteristic which is suitable for universal usability of the light signal, it is provided according to the invention that each LED module (10) has at least one near-field LED (1a, 1b) and at least one far-range LED (1c, 1d) and an optic (5) which focuses the LED light, wherein the near-range LED (1a, 1b) is connected at the light exit side to an optical fiber (4a, 4b) integrated at least partially in the optic (5).
Figure 00000001

Description

Die Erfindung betrifft ein Lichtsignal mit LED-Modulen gemäß dem Oberbegriff des Anspruchs 1. Leuchtzeichen oder Lichtsignale auf der Basis von LED (lichtimitierende Dioden) anstelle von Glühlampen werden in vielen Bereichen, insbesondere in der Bahnsignaltechnik, zunehmend angewendet. LED sind vergleichsweise preiswert, langlebig und lichtstark. Die nachstehenden Erläuterungen beziehen sich im Wesentlichen auf die Fernbereichs- und Nahbereichsdarstellung von Signalbegriffen bei schienengebundenen Verkehrswegen, ohne dass der beanspruchte erfinderische Gegenstand auf diese Anwendung beschränkt sein soll. Bekannte LED-Lichtsignale bestehen im Wesentlichen aus einer rasterartigen Anordnung von LED, welche jeweils mit einem Reflektor ausgestattet sind, wobei gegebenenfalls zusätzlich mindestens ein lichtbündelndes Optikelement sowie eine Frontscheibe vorgesehen sind. Die Lichtverteilung, insbesondere im Hinblick auf den Nah- und Fernbereich, ist häufig unbefriedigend. Durch Sonnenlichtreflektionen an den Oberflächen der Optik und der LED kann bei tiefstehender Sonne der resultierende Phantomlichtanteil derart erheblich sein, dass die Erkennbarkeit des vorgesehenen Signalbegriffs erheblich beeinträchtig ist. Die Signalhelligkeit ist oft zu gering.The invention relates to a light signal with LED modules according to the preamble of claim 1. Illuminated or light signals based on LED (light-emitting diodes) instead from incandescent lamps are used in many areas, especially in the railway signal technology, increasingly applied. LEDs are comparatively inexpensive, durable and bright. The following Explanations relate essentially to the Long-range and short-range representation of signal terms at railways without the claimed inventive subject limited to this application should be. Known LED light signals consist essentially from a grid-like arrangement of LED, which each equipped with a reflector, where appropriate additionally at least one light-bundling optical element and a windscreen are provided. The light distribution, especially with regard to the near and far range, is often unsatisfactory. Through sunlight reflections on the surfaces of the optics and the LED can be at low Sun the resulting phantom light component such be significant that the recognizability of the intended signal concept is significantly impaired. The signal brightness is often too low.

Der Erfindung liegt die Aufgabe zugrunde, ein Lichtsignal der gattungsgemäßen Art anzugeben, das eine optimale Abstrahlcharakteristik aufweist. Dabei ist anzustreben, für unterschiedliche Anbringungs- und Beobachtungspunkte, Kurvenradien des Schienenweges und Erkennungsweiten eine einzige Abstrahlcharakteristik zu realisieren, um universelle Einsetzbarkeit des Lichtsignals zu ermöglichen.The invention is based on the object, a light signal of specify type generic, the optimum radiation characteristics having. It should be strived for, for different Mounting and observation points, curve radii of the Rail and detection distances a single emission to realize universal applicability of the To enable light signal.

Die Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen des Anspruchs 1 gelöst. Die gewünschte Abstrahlcharakteristik für Nah- und Fernbereich ergibt sich durch die Zuordnung mehrerer LED zu einer bündelnden Optik, wobei mindestens eine Nahbereichs-LED mit einem Lichtleiter zusammenwirkt, der das LED-Licht in die Nähe der Austrittsfläche der Optik leitet, wo es relativ ungeordnet vor allem seitlich und nach unten austritt. Dabei ist die Lichtverteilung im Nahbereich durch die Oberflächen- und Kantenausführung des Lichtleiters beeinflussbar. Eine Veränderung der Verteilungscharakteristik, die sich vorwiegend auf den Fernbereich auswirkt, ist durch die Veränderung der Flächengeometrie der Lichtaustrittfläche der Optik möglich.The object is achieved with the characterizing Characteristics of claim 1 solved. The desired radiation characteristic for near and far range results from the Assignment of multiple LED to a bundling optics, where at least a short-range LED interacts with a light guide, the LED light near the exit surface of the Optics conducts where it is relatively disordered, especially sideways and comes down. The light distribution is at close range through the surface and edge design of the light guide influenced. A change in the distribution characteristic, which mainly affects the distance, is due to the change in the surface geometry of Light exit surface of the optics possible.

Gemäß Anspruch 2 sind pro LED-Modul vier LED vorgesehen, wobei durch deren Anordnung der untere Bereich der Optik sonnenlichtabsorbierend geschwärzt sein kann. Vorzugsweise werden vier Standard-LED in SMD-Bauweise verwendet. Die LED müssen dabei nicht an der Obergrenze ihres Leistungsbereiches betrieben werden, so dass eine verlängerte Lebensdauer zu erwarten ist. Die SMD-Bauweise kann auch in moderner Chip-On-Board-Technik ausgeführt sein. Auf diese Weise stehen mehrere kompatible Technologien für unterschiedliche LED-Bauweisen zur Verfügung, wodurch die Produktverfügbarkeit verbessert wird.According to claim 2, four LEDs are provided per LED module, wherein by the arrangement of the lower region of the optic absorbing sunlight blackened can be. Preferably Four standard LED used in SMD construction. The LED must not at the upper limit of their power range be operated, so to expect a prolonged life is. The SMD design can also be used in modern chip-on-board technology be executed. In this way, there are several Compatible technologies for different LED designs available, which improves product availability becomes.

Es wurde festgestellt, dass der Fernbereich etwa gleich viel Licht benötigt wie der Nahbereich. Deshalb können vier gleichartige LED, nämlich zwei für den Fernbereich und zwei für den Nahbereich, verwendet werden. It was found that the distance range is about the same Light needs like the near area. That's why four similar LED, namely two for the long range and two for close-up use.

Die vier LED können in Abhängigkeit der angestrebten Sicherheitskonzepte bezüglich der LED-Ausfälle unterschiedlich verschaltet werden. Eine geeignete Lösung stellt beispielsweise eine Reihenschaltung der vier LED dar, aber auch andere Verschaltungen sind denkbar.The four LEDs can depend on the desired security concepts connected differently with regard to the LED failures become. A suitable solution, for example a series connection of the four LEDs, but also other interconnections are conceivable.

Das auf die Austrittsfläche der Optik einfallende Sonnenlicht wird ab einem Sonnenstand von 10° und höher komplett auf die Absorptionsfläche der Optik gelenkt. Als störend verbleibt nur der geringfügige Oberflächen-Reflex an der Austrittsfläche. Besonders vorteilhaft ist, dass kein Sonnenlicht direkt in die LED gelangt, so dass der gefürchtete Effekt, dass die LED durch das Sonnenlicht zum Leuchten angeregt werden, nicht auftritt. Erst bei noch niedrigerem Sonnenstand und frontaler Anstrahlung kann ein geringer Teil des Sonnenlichts zu den LED vordringen. Aber selbst dann erscheinen die aktiven LED-Module viel heller als das zurückgeworfene Sonnenlicht.The incident on the exit surface of the optic sunlight becomes completely on the sun from 10 ° and higher Absorption surface of the optics steered. As annoying remains only the slight surface reflection at the exit surface. It is particularly advantageous that no sunlight directly gets into the LED, so that the dreaded effect that the LED are excited by the sunlight to shine, not occurs. Only at even lower sun position and frontal A small amount of sunlight can be irradiated to the sunlight LED penetrate. But even then the active LED modules appear much brighter than the reflected sunlight.

Das Nutzlicht der LED durchläuft die Optik quasi ungehindert. Dadurch ist der Lichtwirkungsgrad so gut, dass bereits bei einer Lichtleistung von 0.2 Watt pro LED-Modul eine ausreichende Lichtverteilung erzielbar ist.The useful light of the LED goes through the optics virtually unhindered. As a result, the light efficiency is so good that already at a light output of 0.2 watts per LED module sufficient Light distribution is achievable.

Da die bevorzugten SMD-LED keine herkömmlichen Reflektoren besitzen, ist deren Reflexionsneigung geringer als bei den üblichen LED, welche einen spiegelnden Reflektor aufweisen. Um die Reflexionsneigung noch weiter einzuschränken, kann mittels Chop-On-Board-Technologie rund um den einzelnen LED-Chip eine schwarzmatte Oberfläche ausgebildet werden.Because the preferred SMD LED is not conventional reflectors have their tendency to reflect less than in the usual LED, which have a specular reflector. To limit the tendency to reflect even further, can using chop-on-board technology around the individual LED chip a black mat surface are formed.

Normalerweise wird das Lichtsignal mehrere Meter oberhalb des Bodens mit annähernd horizontaler Abstrahlrichtung aufgestellt. Bei einer Bodenmontage mit Abstrahlrichtung noch oben würde die Optik extremes Phantomlicht produzieren, da die Lichtabstrahlung und die Sonneneinstrahlung zusammenfallen könnten. Für diese Einsatzfälle kann die vorhandene Optik auf dem Kopf stehend montiert werden. Dadurch ergibt sich wieder eine phantomlichtarme Anordnung. Zusätzlich könnte durch geeignete Orientierung des Lichtsignals bei Bodenmontage und/oder durch Abschattung ein direkter Sonneneinfall auf das Signal verhindert werden.Normally, the light signal will be several meters above the Floor set up with approximately horizontal radiation direction. For a floor installation with radiation direction still up the optics would produce extreme phantom light, since the Light emission and solar radiation coincide could. For these applications, the existing optics on be mounted standing upside down. This results again a phantom light-poor arrangement. In addition, could by suitable Orientation of the light signal at floor mounting and / or by shading direct sunlight on the Signal can be prevented.

Nach Anspruch 3 ist die Optik in einem Gehäuse untergebracht, welches vorteilhafterweise in der Nähe der Lichtaustrittsfläche in einer Matrixplatte dichtend eingesetzt ist und lichteintrittsseitig Schnappelemente aufweist, in die eine LED-bestückte Platine quasi eingerastet wird. Die Bestromung der vier LED auf der Platine kann über zwei Anschlussdrähte erfolgen, die gemeinsam mit anderen LED-Modulen über einen Vielfachstecker mit einer zugehörigen Stromquelle verbunden sind.According to claim 3, the optics is housed in a housing, which advantageously in the vicinity of the light exit surface is sealingly inserted in a matrix plate and light entry side Has snap elements, in which a LED-populated Board is almost locked. The energization of four LEDs on the board can be made via two connecting wires, which together with other LED modules over a Multiple plug connected to an associated power source are.

Zusätzlich kann die LED-Platine in ein kleines KunststoffGehäuse eingeklebt sein, welches über jede der vier LED eine Linse ausgebildet, falls die LED selbst keine Linse bzw. Optik aufweist. Das ist insbesondere bei SMD-Bauweise der Fall. Die Linsen bündeln das Licht vor und erhöhen damit den Lichtwirkungsgrad.Additionally, the LED board can be put into a small plastic case glued, which is above each of the four LEDs Lens formed if the LED itself no lens or optics having. This is especially the case with SMD construction. The lenses focus the light and increase the light efficiency.

Zur Befestigung der Optiken in der Matrixplatte kann eine Dübelung vorgesehen sein, wobei das Optikgehäuse durch Einpressen in die Matrixplatte plastisch-elastisch verquetscht wird und hierbei eine gute Abdichtung bewirkt. To attach the optics in the matrix plate can be a dowel be provided, wherein the optical housing by pressing is pressed into the matrix plate plastically-elastic and this causes a good seal.

Zur Wärmeabführung sind die LED gemäß Anspruch 4 mit Vorrichtungen zur Luftkühlung verbunden. Temperatur hat den größten Einfluss auf die Lebensdauer einer LED. Die Leistungsgrenzwerte sind durch die maximal zulässige Temperatur der internen LED-Bauteile und der beim Betrieb entstehenden Verlustwärme limitiert. Hierbei bestimmt einerseits der innere Wärmestrom zwischen den LED-Bauteilen die maximal mögliche Grenzbelastung einer LED; andererseits muss die Wärme außerhalb der LED abgeleitet werden können. Eine gute Wärmeabfuhr senkt das Temperaturniveau auch im Inneren der LED und vergrößert entsprechend die Lebensdauer. Beim Überschreiten der festgelegten Betriebsparameter nimmt die Lebensdauer der LED durch Überhitzung rapide ab. Aber auch bei sehr starker Unterschreitung der Werte kann die Lebensdauer beeinträchtigt werden, da dann innere Prozesse noch nicht wie vorgesehen ablaufen. Ein Optimum bezüglich Lichtleistung, Ausnutzung und Lebensdauer liegt bei einem Betriebszustand etwas unterhalb der empfohlenen Nennwerte. Unter solchen Bedingungen verbessert sich - im Gegensatz zur Glühlampe - auch die relative Lichtausbeute, d. h. die Helligkeit je eingesetzter Leistungseinheit.For heat dissipation, the LED according to claim 4 with devices connected for air cooling. Temperature has the biggest Influence on the life of an LED. The performance limits are due to the maximum allowable temperature of the internal LED components and the heat loss during operation limited. On the one hand, this determines the internal heat flow between the LED components the maximum possible Limit load of a LED; On the other hand, the heat needs to be outside the LED can be derived. A good heat dissipation also lowers the temperature level inside the LED and increases it according to the life. When crossing the set operating parameters decreases the life of the LED due to overheating rapidly. But even with very strong underrun The values can affect the service life since internal processes do not yet proceed as planned. An optimum in terms of light output, utilization and Lifespan is slightly below in an operating condition the recommended nominal values. Improved under such conditions - in contrast to the light bulb - and the relative Luminous efficacy, d. H. the brightness of each power unit used.

Um die Wärme optimal von den LED abzuleiten, ist eine erhebliche Anzahl von Durchkontaktierungen auf der Rückseite der LED-Platine vorgesehen. Diese Durchkontaktierungen werden auf Kupferflächen verteilt, an welche ein Aluminium-Kühlkörper angeklebt ist, der mittels Kühlrippen die Wärme an die Umgebungsluft abführt. Die Lebensdauer der Optik wird daher auch durch die Größe dieses Kühlkörpers bestimmt. Eine geringe Wärmemenge wird auch über die beiden Anschlussdrähte abgeführt und tritt in die umgebende Luft über. In weiterer Folge wird die Wärme an die Wand des Lichtsignalgehäuses und dann an die Umgebung abgeführt. Eine starke Erwärmung des Lichtsignalgehäuses durch Sonneneinstrahlung ist zu vermeiden. Dazu dienen Sonnenblenden oder aber geeignete Farbgebung. Denkbar ist aber auch eine aktive oder passive Belüftung des Lichtsignalgehäuses.To derive the heat optimally from the LED is a considerable Number of vias on the back of the LED board provided. These vias are on Copper surfaces distributed to which an aluminum heat sink is glued by means of cooling fins the heat to the ambient air dissipates. The life of the optics will therefore also determined by the size of this heat sink. A small one Heat is also dissipated via the two connecting wires and enters the surrounding air. Subsequently the heat is applied to the wall of the traffic signal housing and then discharged to the environment. A strong warming of the traffic signal housing by sunlight is to be avoided. To serve sun visors or suitable color. Conceivable but is also an active or passive ventilation of the Traffic signal housing.

Die Erfindung wird nachfolgend anhand figürlicher Darstellungen näher erläutert. Es zeigen:

Figur 1
eine LED-Platine,
Figur 2
eine Optik mit Absorptionsfläche,
Figur 3
ein Optikgehäuse mit Matrixplatte und LED-Platine,
Figur 4
eine vollbestückte Matrixplatte und
Figur 5
einen Querschnitt durch ein LED-Modul mit Strahlengängen.
The invention will be explained in more detail with reference to figurative representations. Show it:
FIG. 1
an LED board,
FIG. 2
an optic with absorption surface,
FIG. 3
an optical housing with matrix plate and LED board,
FIG. 4
a fully populated matrix plate and
FIG. 5
a cross section through an LED module with beam paths.

Eine wesentliche Komponente eines Lichtsignals ist die in Figur 1 dargestellte, mit vier LED 1a, 1b, 1c und 1d bestückte Platine 2. Die Bestromung der LED 1a, 1b, 1c und 1d erfolgt über zwei Anschlussdrähte 3a und 3b. Die beiden oberen LED 1a und 1b sind lichtaustrittsseitig mit Lichtleitern 4a und 4b einer in Figur 2 veranschaulichten Optik 5 verbunden. Die beiden in etwa zentrisch auf der Platine 2 angeordneten LED 1c und 1d strahlen ihr Licht auf den oberen Teil eines Linsenkörpers 6 der Optik 5. Der untere Teil des Linsenkörpers 6 ist sowohl lichteintrittsseitig als auch mantelseitig mit einer Absorptionsfläche 7 für Sonnenlicht versehen. Figur 3 zeigt die LED-Platine 2 in montiertem Zustand. Die Optik 5 ist in einem Gehäuse 8 untergebracht, das nahe der Lichtaustrittsfläche der Optik 5 in eine Matrixplatte 9 abdichtend eingedrückt ist und rückwärtige Rastelemente zum Einsetzen der LED-Platine 2 aufweist. Eine mit derartigen LED-Modulen 10 voll bestückte Matrixplatte 9, die quasi die Abstrahlfläche des Lichtsignals bildet, zeigt Figur 4. An essential component of a light signal is that shown in FIG 1, equipped with four LEDs 1a, 1b, 1c and 1d Board 2. The current supply of the LED 1a, 1b, 1c and 1d takes place via two connection wires 3a and 3b. The two upper LEDs 1a and 1b are light exit side with optical fibers 4a and 4b a illustrated in Figure 2 optics 5 connected. The both arranged approximately centrally on the board 2 LED 1c and 1d radiate their light on the upper part of a lens body 6 of the optics 5. The lower part of the lens body 6 is both light entry side and coat side with a Absorption surface 7 provided for sunlight. FIG. 3 shows the LED board 2 in the assembled state. The optics 5 is housed in a housing 8, which is close to the light exit surface the optic 5 in a matrix plate 9 sealing is pressed and rear locking elements for insertion the LED board 2 has. One with such LED modules 10 fully populated matrix plate 9, which is virtually the radiating surface of the light signal is shown in FIG. 4.

Aus der Querschnittsdarstellung des LED-Moduls 10 in Figur 5 ist ersichtlich, dass die LED 1a. 1b. 1c, 1d mit Frontlinsen 11 zur Vorbündelung des LED-Lichts ausgestattet sind und dass die LED-Platine 2 zur Wärmeabführung mit einem rippenförmigen Kühlkörper 12 verbunden ist. Das Licht der oberen LED 1a und 1b, das in die Lichtleiter 4a und 4b eingestrahlt wird, wird dadurch relativ breit insbesondere nach unten und zur Seite gestreut, so dass sich eine optimale Erkennbarkeit des Signalbegriffes im Nahbereich ergibt. Einige Nahbereichsstrahlen sind mit 13 gekennzeichnet. Für den Fernbereich ergeben sich durch den Linsenkörper 6 Strahlen 14, die im Wesentlichen von dem Licht der LED 1c und 1d herrühren. Einfallendes Sonnenlicht 15 wird oberhalb eines Sonnenstandes von 10° über dem Horizont durch die Optik 5 vollständig auf die Absorptionsfläche 7 gelenkt, dass Phantomlicht nicht auftreten kann.From the cross-sectional view of the LED module 10 in Figure 5 it can be seen that the LED 1a. 1b. 1c, 1d with front lenses 11 are equipped for pre-focusing the LED light and that the LED board 2 for heat dissipation with a rib-shaped Heat sink 12 is connected. The light of the upper LED 1a and 1b, which is irradiated in the optical fibers 4a and 4b becomes thereby relatively wide, in particular down and to the side scattered, so that an optimal recognizability of the signal concept at close range. Some near-field rays are marked with 13. For the far range arise through the lens body 6 beams 14, which are essentially of from the light of the LEDs 1c and 1d. Incident sunlight 15 is above a sun's position of 10 ° above the Horizon through the optics 5 completely on the absorption surface 7 directs that phantom light can not occur.

Die Erfindung beschränkt sich nicht auf das vorstehend angegebene Ausführungsbeispiel. Vielmehr ist eine Anzahl von Varianten denkbar, welche auch bei grundsätzlich anders gearteter Ausführung von den Merkmalen der Erfindung Gebrauch machen.The invention is not limited to the above Embodiment. Rather, it is a number of variants conceivable, which also with fundamentally different kind Execution of the features of the invention make use.

Claims (4)

Lichtsignal mit einer Mehrzahl im Wesentlichen gleichartiger LED-Module (10), insbesondere zur Fernbereichs- und Nahbereichsdarstellung von Signalbegriffen bei schienengebundenen Verkehrswegen,
dadurch gekennzeichnet, dass jedes LED-Modul (10) mindestens eine Nahbereichs-LED (1a, 1b) und mindestens eine Fernbereichs-LED (1c, 1d) sowie eine das LED-Licht bündelnde Optik (5) aufweist, wobei die Nahbereichs-LED (1a, 1b) lichtaustrittsseitig mit einem zumindest teilweise in die Optik (5) integrierten Lichtleiter (4a, 4b) verbunden ist.Light signal with a plurality of essentially identical LED modules (10), in particular for the long-range and short-range representation of signal terms in rail-bound traffic routes,
characterized in that each LED module (10) comprises at least one short-range LED (1a, 1b) and at least one far-field LED (1c, 1d) and an LED light-bundling optics (5), wherein the short-range LED (1a, 1b) is connected to the light exit side with an at least partially in the optics (5) integrated light guide (4a, 4b). Lichtsignal nach Anspruch 1,
dadurch gekennzeichnet, dass jedes LED-Modul (10) zwei im Wesentlichen mittig zur Lichteintrittsfläche der Optik (5) angeordnete Fernbereichs-LED (1c, 1d) und zwei oberhalb derselben angeordnete Nahbereichs-LED (1a, 1b) aufweist, wobei die Optik (5) im unteren Bereich lichteintrittsseitig und mantelseitig eine Absorptionsfläche (7) für Sonnelicht aufweist.Light signal according to claim 1,
characterized in that each LED module (10) has two long-range LEDs (1c, 1d) arranged substantially centrally of the light entry surface of the optics (5) and two short-range LEDs (1a, 1b) arranged above the same, the optics ( 5) has an absorption surface (7) for sun light in the lower region on the light entry side and on the shell side. Lichtsignal nach einem der vorangehenden Ansprüche,
dadurch gekennzeichnet, dass Optikgehäuse (8) vorgesehen sind, welche in einer vorgelochten Matrixplatte (9) dichtend eingedrückt und gegebenenfalls zusätzlich eingedübelt sind und an die lichteintrittsseitig LED-bestückte Platinen (2) angeschnappt sind.Light signal according to one of the preceding claims,
characterized in that optical housing (8) are provided, which are pressed sealingly in a pre-punched matrix plate (9) and optionally additionally doweled and are snapped to the light-entry side LED-equipped boards (2). Lichtsignal nach Anspruch 3,
dadurch gekennzeichnet, dass die Platinen (2) zur Wärmeableitung Durchkontaktierungen aufweisen, welche über Kupferflächen mit rippenförmigen Kühlkörpern (12) verbunden sind.Light signal according to claim 3,
characterized in that the boards (2) for heat dissipation vias, which are connected via copper surfaces with rib-shaped heat sinks (12).
EP04090430A 2003-11-25 2004-11-12 Light signal Expired - Lifetime EP1535820B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200430340T SI1535820T1 (en) 2003-11-25 2004-11-12 Light signal
PL04090430T PL1535820T3 (en) 2003-11-25 2004-11-12 Light signal

Applications Claiming Priority (2)

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DE10355878A DE10355878B3 (en) 2003-11-25 2003-11-25 light signal
DE10355878 2003-11-25

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EP1535820A2 true EP1535820A2 (en) 2005-06-01
EP1535820A3 EP1535820A3 (en) 2006-06-07
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DE (2) DE10355878B3 (en)
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PL (1) PL1535820T3 (en)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011157597A1 (en) * 2010-06-16 2011-12-22 Siemens Aktiengesellschaft Light signal
EP3480078A1 (en) * 2017-11-07 2019-05-08 Siemens Schweiz AG Light signal for displaying signal terms for a traffic route

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1396088B1 (en) † 2009-10-16 2012-11-09 Solari Di Udine S P A LUMINOUS LED SIGNALING DEVICE AND ITS CONTROL PROCEDURE

Family Cites Families (6)

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Publication number Priority date Publication date Assignee Title
GB502980A (en) * 1937-10-13 1939-03-29 James Boot Improvements in colour-light signals
DE930593C (en) * 1949-07-29 1955-07-21 Westinghouse Brake & Signal Device for generating a light beam
ATA174989A (en) * 1989-07-20 1999-06-15 Zelisko Josef Elektro Masch SIGNAL ARRANGEMENT WITH A SPOTLIGHT
US5833355A (en) * 1996-12-06 1998-11-10 Dialight Corporation Led illuminated lamp assembly
DE29706646U1 (en) * 1997-04-14 1997-10-09 Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg(ZSW), 70565 Stuttgart Light source
DE19922361C2 (en) * 1999-05-14 2003-05-28 Osram Opto Semiconductors Gmbh LED module for display devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011157597A1 (en) * 2010-06-16 2011-12-22 Siemens Aktiengesellschaft Light signal
EP3480078A1 (en) * 2017-11-07 2019-05-08 Siemens Schweiz AG Light signal for displaying signal terms for a traffic route

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ATE357362T1 (en) 2007-04-15
PL1535820T3 (en) 2007-08-31
EP1535820B1 (en) 2007-03-21
DE502004003268D1 (en) 2007-05-03
PT1535820E (en) 2007-04-30
DK1535820T3 (en) 2007-07-30
DE10355878B3 (en) 2005-08-25
SI1535820T1 (en) 2007-08-31
ES2281751T3 (en) 2007-10-01
EP1535820A3 (en) 2006-06-07

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