WO2011104205A1 - Symbol indicator - Google Patents

Symbol indicator Download PDF

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Publication number
WO2011104205A1
WO2011104205A1 PCT/EP2011/052517 EP2011052517W WO2011104205A1 WO 2011104205 A1 WO2011104205 A1 WO 2011104205A1 EP 2011052517 W EP2011052517 W EP 2011052517W WO 2011104205 A1 WO2011104205 A1 WO 2011104205A1
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WO
WIPO (PCT)
Prior art keywords
symbol
led modules
light
front panel
symbol display
Prior art date
Application number
PCT/EP2011/052517
Other languages
German (de)
French (fr)
Inventor
Rolf Eckl
Uwe Frost
Kay Köster
Jan Oertel
Original Assignee
Siemens Aktiengesellschaft
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens Aktiengesellschaft filed Critical Siemens Aktiengesellschaft
Priority to DK11706506.0T priority Critical patent/DK2539877T3/en
Priority to EP11706506.0A priority patent/EP2539877B1/en
Priority to ES11706506.0T priority patent/ES2649397T3/en
Publication of WO2011104205A1 publication Critical patent/WO2011104205A1/en

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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F13/00—Illuminated signs; Luminous advertising
    • G09F13/20—Illuminated signs; Luminous advertising with luminescent surfaces or parts
    • G09F13/22—Illuminated signs; Luminous advertising with luminescent surfaces or parts electroluminescent

Definitions

  • the invention relates to a symbol indicator, in particular for rail-bound traffic routes, with LED modules for pixel-wise visualization of the symbol and the LED modules associated with optical elements, which are arranged on a front panel.
  • Railroad safety symbol displays consist of a large number of light points arranged in grids - the pixels.
  • the symbols to be displayed for example numbers or letters, form a meaningful arrangement of defined individual pixels.
  • an electrical driver assembly is used for driving the symbol.
  • the radiation behavior of the symbol indicators in particular light distribution, axle light intensity, color and phantom protection, is subject to the field-tested requirements of railroad operation.
  • the pixels of the symbol indicator are illuminated by different optical methods.
  • incandescent lamp technology the light from a central signal lamp is coupled into a light conductor bundle, distributed via its fibers and transported to the front lenses of the pixels.
  • LED technology predominantly uses several LED light sources per pixel, but at least one LED light source per pixel.
  • LED modules and the associated lenses are usually arranged in a compact design directly on the front panel of the symbol indicator.
  • symbol indicators are used to transmit information to approaching rail vehicles. These are often safety-relevant information that must by no means be falsified visually or blended by extraneous light.
  • the phantom effect can lead to a false display as a result of an untimely illumination of at least one pixel or a color shift. Particularly disturbing occurs this effect when using LED modules as a light source, as LEDs can be excited by incident light to shine or LED reflectors often rear reflectors are used.
  • LED modules as a light source, as LEDs can be excited by incident light to shine or LED reflectors often rear reflectors are used.
  • the reflection protection against extraneous light is realized in the symbol display mainly by the fact that the lens body of the single pixel has an elongated shape, wherein an opaque shell is provided, which the penetrating radiation absorbs. Due to the geometrical construction of the elongated lens body, it can be achieved that approximately all external light rays penetrating from outside at an angle of at least 10 ° are conducted onto the light-absorbing underside of the lens body.
  • the front panel in known symbol displays is provided with openings, which correspond to the light exit surface of a pixel.
  • symbol-dependent front panels do not provide optimal phantom protection, since the symbol to be displayed is impressed by the corresponding arrangement of the front lenses in the front panel, so that the phantom effect is symbol-dependent and reflected by an illuminated, d. H. activated symbol, even though the symbol indicator is deactivated.
  • the invention has for its object to provide a symbol indicator of the generic type, in which an impairment of safety due to the phantom effect is largely avoidable.
  • the object is achieved in that the LED modules are arranged inclined to the front panel at an angle and that the optical elements are formed as Kollimatorlinsen.
  • the collimator lens effects the parallel direction of the light beams generated by the LED and incident at an inclination angle, for example 7 °, of the LED module to the collimating lens obliquely to the optical axis of the collimator lens.
  • an inclination angle for example 7 °
  • unwanted phantom light can penetrate the collimator lens largely unhindered even at angles of incidence of less than 10 ° and can be absorbed by housing parts of the LED module.
  • the LED Its inclination itself does not influence phantom light in its luminous behavior, or is affected by phantom light.
  • the LED modules are equipped with opaque encapsulated housings. This results in optimal absorption of flat incident phantom light.
  • the length of the collimator lens is smaller than its diameter.
  • the phantom light is mainly produced by housing parts in the area of the rear of the lens, i. H. preferably of housing parts, which belong to the LED module, and not absorbed by the lateral surface of the lens. A complete encapsulation of each individual collimator lens can thus be dispensed with.
  • the collimator lenses have Eingrauept.
  • the Eingrauung improves phantom control, especially when it is feared that, for example, due to the location, despite inclination angle between the LED module and front panel extraneous light reflections can occur.
  • the ratio between phantom control and light intensity of the pixels can be optimized in a simple manner by determining the degree of incorporation.
  • a scattering disk or a gray filter disk can also be used.
  • the front panel is fully loaded with collimator lenses.
  • the phantom light detection is improved because of the lens surface reflected phantom light affects the entire surface of the icon indicator equally and affects not only the symbol specific pixels.
  • the symbol-specific unnecessary pixels can be covered according to claim 6 but also with light-absorbing caps.
  • different symbols can thereby be realized with a symbol indicator, whereby according to need the pixels not required in each case are covered by repositioning the light-absorbing caps and LED modules without LEDs are plugged in at these locations.
  • the LED modules are advantageously according to claim 7 attachable by snap connection to the front panel.
  • the collimator lenses can also be plugged or pressed onto the other side of the front panel. This results in a simple, tool-free installation of the individual pixels of the symbol indicator.
  • the invention will be explained below a figurative representation.
  • the figure shows the essential components for a light spot or pixel of a symbol indicator according to the invention on the basis of a vertical sectional view.
  • an LED module 1 with a single LED 2 with an inclination angle a which is approximately 10 °, is arranged relative to a front plate 3.
  • a plurality of the LED modules 1 associated collimator lenses 4 are used, which directs the obliquely incident on the collimator lens 4 LED light in a substantially horizontal propagation direction parallel.
  • the light points or pixels not required for the respective symbol, for example a number or a letter, are covered with light-absorbing caps.
  • the LED modules 1 which are not required at these locations are replaced by dummy modules, ie by LED housings 5 without LEDs 2.
  • the LED modules 1 required for the symbol pixels are connected via connecting wires 6 to a driver module, not shown, for actuating the symbol indicator.
  • Each LED module 1 is equipped with the light-absorbing housing 5, which has openings in the region of an LED lens 7. Furthermore, the LED module 1 is provided with a snap connection 8 for attachment to the front panel 3. As a result, a simple, tool-free installation of the LED modules 1 is possible. Also, the collimator lens 4 can be removably attached to the front panel 3 in a similar manner.
  • This structure is characterized by very effective external light suppression. Also very flat incoming extraneous light, z. B. at low sun, is absorbed to the LED housing 5. In addition to the inclination between LED module 1 and front panel 3 with the angle ⁇ contributes to the flat design of the collimator lens 4 at. Extraneous light can predominantly penetrate the collimator lens 4, without affecting the very short one
  • the extraneous light intensity can be further reduced by embedding the lens material.
  • the claimed concept of pixel generation allows a very extensive protection against extraneous light, the so-called phantom effect, by combining the angled arrangement between LED module 1 and front panel 3, with encapsulated LED housing 5, flat lens design, lens material, full assembly of the front panel 3 and attaching plastic caps on the pixels not involved in the symbol to be displayed.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Led Device Packages (AREA)

Abstract

The invention relates to a symbol indicator, in particular for rail-bound traffic routes, comprising LED modules (1) for the pixelated vision of the symbol, and optical elements associated with the LED modules (1) are placed on a front plate (3). The aim of the invention is to effectively protect against incident extraneous light on said indicator such that the LED modules (1) are arranged at an inclined angle (α) with respect to the front plate (3) and that the optical elements are embodied as collimator lenses (4).

Description

Beschreibung Symbolanzeiger Die Erfindung betrifft einen Symbolanzeiger, insbesondere für schienengebundene Verkehrswege, mit LED-Modulen für die pixelweise Visualisierung des Symbols und den LED-Modulen zugeordneten Optikelementen, welche auf einer Frontplatte angeordnet sind. The invention relates to a symbol indicator, in particular for rail-bound traffic routes, with LED modules for pixel-wise visualization of the symbol and the LED modules associated with optical elements, which are arranged on a front panel.
Die nachstehenden Erläuterungen beziehen sich im Wesentlichen auf Symbolanzeiger für schienengebundene Verkehrswege, ohne dass der beanspruchte Gegenstand auf diese Anwendung beschränkt sein soll . The following explanations relate mainly to rail-mounted traffic signs, without the claimed subject-matter being intended to be limited to this application.
Symbolanzeiger für die Eisenbahnsicherungstechnik bestehen aus einer Vielzahl von in Rastern angeordneten Lichtpunkten - den Pixeln. Die darzustellenden Symbole, beispielsweise Ziffern oder Buchstaben bilden sich aus einer sinnvollen Anord- nung definierter Einzelpixel. Zur Ansteuerung des Symbols wird üblicherweise eine elektrische Treiberbaugruppe eingesetzt. Das Abstrahlverhalten der Symbolanzeiger, insbesondere Lichtverteilung, Achslichtstärke, Farbe und Phantomschutz, unterliegt den felderprobten Anforderungen des Eisenbahnbe- triebes. Railroad safety symbol displays consist of a large number of light points arranged in grids - the pixels. The symbols to be displayed, for example numbers or letters, form a meaningful arrangement of defined individual pixels. For driving the symbol usually an electrical driver assembly is used. The radiation behavior of the symbol indicators, in particular light distribution, axle light intensity, color and phantom protection, is subject to the field-tested requirements of railroad operation.
Die Pixel des Symbolanzeigers werden durch unterschiedliche optische Verfahren ausgeleuchtet. Bei der Glühlampentechnik wird das Licht einer zentralen Signallampe in ein Lichtlei- terbündel eingekoppelt, über dessen Fasern verteilt und auf die Frontlinsen der Pixel transportiert. Bei der LED-Technik hingegen werden überwiegend mehrere LED-Lichtquellen pro Pixel eingesetzt, mindestens jedoch eine LED-Lichtquelle pro Pixel. Derartige LED-Module und die zugehörigen Linsen sind üblicherweise in kompakter Bauform direkt an der Frontplatte des Symbolanzeigers angeordnet. The pixels of the symbol indicator are illuminated by different optical methods. In the case of incandescent lamp technology, the light from a central signal lamp is coupled into a light conductor bundle, distributed via its fibers and transported to the front lenses of the pixels. By contrast, LED technology predominantly uses several LED light sources per pixel, but at least one LED light source per pixel. Such LED modules and the associated lenses are usually arranged in a compact design directly on the front panel of the symbol indicator.
Prinzipiell dienen Symbolanzeiger zur Informationsübermittlung an sich nähernde Schienenfahrzeuge. Dabei handelt es sich häufig um sicherheitsrelevante Informationen, die keinesfalls optische verfälscht oder durch Fremdlicht überblendet sein dürfen. Das unerwünschte Aufleuchten bzw. Verfälschen eines Pixels durch Einfall von Umgebungslicht, z. B. Sonneneinstrahlung oder Scheinwerferlicht, wird als Phantomeffekt bezeichnet. Durch den Phantomeffekt kann es in Extremfällen zu einer falschen Anzeige infolge eines unzeitigen Aufleuchtens mindestens eines Pixels oder einer Farbverschiebung kommen. Besonders störend tritt dieser Effekt bei der Verwendung von LED-Modulen als Lichtquelle auf, da LEDs durch auftreffendes Licht zum Leuchten angeregt werden können bzw. bei LED-Lichtquellen häufig rückwärtige Reflektoren eingesetzt werden. Neben den bekannten Phantomerzeugern, die bei der Projektierung vorhersehbar sind, z. B. tiefstehende Sonne für Signale in Ost-West-Orientierung, treten auch sporadisch und unvorhergesehen Quellen für Phantome, z. B. Fahrzeug- oder Bauscheinwerfer, Reflexion an Oberflächen, z. B. an verglasten Fronten oder Schneedecken, auf. Damit kann auch ein Symbolanzeiger, der aufgrund des Standortes phantomsicher sein sollte, phantomanfällig sein. In principle, symbol indicators are used to transmit information to approaching rail vehicles. These are often safety-relevant information that must by no means be falsified visually or blended by extraneous light. The unwanted lighting or falsification of a pixel by the incidence of ambient light, eg. B. Sunlight or spotlight, is referred to as a phantom effect. In extreme cases, the phantom effect can lead to a false display as a result of an untimely illumination of at least one pixel or a color shift. Particularly disturbing occurs this effect when using LED modules as a light source, as LEDs can be excited by incident light to shine or LED reflectors often rear reflectors are used. In addition to the known phantom generators that are predictable in the project, z. B. low sun for signals in east-west orientation, also occur sporadically and unforeseen sources of phantoms, z. As vehicle or building lamp, reflection on surfaces, such. B. on glazed fronts or snow cover on. This can also be a symbol indicator, which should be phantom-secure due to the location, be phantom prone.
Generell wird versucht, den Phantomeffekt durch Blenden, Schuten, Vermeidung von Ost-West-Orientierung oder durch Wiederholung von kritischen Symbolanzeigern zu minimieren. In general, attempts are made to minimize the phantom effect by blinding, baring, avoiding east-west orientation or by repeating critical symbol indicators.
Der Reflexionsschutz gegenüber Fremdlicht wird beim Symbolan- zeiger hauptsächlich dadurch realisiert, dass der Linsenkör- per des Einzelpixels eine langgestreckte Form aufweist, wobei eine lichtundurchläs ige Ummantelung vorgesehen ist, die die eindringende Strahlung absorbiert. Durch die geometrische Konstruktion des langgestreckten Linsenkörpers kann erreicht werden, dass annähernd alle mit einem Winkel von mindestens 10° von außen eindringenden Fremdlichtstrahlen auf die licht- absorbierende Unterseite des Linsenkörpers geleitet werden. The reflection protection against extraneous light is realized in the symbol display mainly by the fact that the lens body of the single pixel has an elongated shape, wherein an opaque shell is provided, which the penetrating radiation absorbs. Due to the geometrical construction of the elongated lens body, it can be achieved that approximately all external light rays penetrating from outside at an angle of at least 10 ° are conducted onto the light-absorbing underside of the lens body.
Die Frontplatte bei bekannten Symbolanzeigen ist mit Durchbrüchen versehen, welche der Lichtaustrittsfläche eines Pixels entsprechen. Derartige symbolabhängige Frontplatten bieten jedoch keinen optimalen Phantomschutz, da das anzuzeigende Symbol durch die entsprechende Anordnung der Frontlinsen in der Frontplatte eingeprägt ist, so dass der Phantomeffekt symbolabhängig ist und durch Reflexionen ein beleuchtetes, d. h. aktiviertes, Symbol vortäuschen kann obwohl der Symbolanzeiger deaktiviert ist. The front panel in known symbol displays is provided with openings, which correspond to the light exit surface of a pixel. However, such symbol-dependent front panels do not provide optimal phantom protection, since the symbol to be displayed is impressed by the corresponding arrangement of the front lenses in the front panel, so that the phantom effect is symbol-dependent and reflected by an illuminated, d. H. activated symbol, even though the symbol indicator is deactivated.
Der Erfindung liegt die Aufgabe zugrunde, einen Symbolanzeiger der gattungsgemäßen Art anzugeben, bei dem eine Beeinträchtigung der Sicherheit infolge des Phantomeffektes weit- gehender vermeidbar ist. The invention has for its object to provide a symbol indicator of the generic type, in which an impairment of safety due to the phantom effect is largely avoidable.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass die LED-Module zur Frontplatte mit einem Winkel geneigt angeordnet sind und dass die Optikelemente als Kollimatorlinsen aus- gebildet sind. According to the invention the object is achieved in that the LED modules are arranged inclined to the front panel at an angle and that the optical elements are formed as Kollimatorlinsen.
Die Kollimatorlinse bewirkt die Parallelrichtung der Lichtstrahlen, die von der LED erzeugt werden und entsprechend dem Neigungswinkel, beispielsweise 7°, des LED-Moduls zur Kolli- matorlinse schräg zur optischen Achse der Kollimatorlinse einfallen. Auf diese Weise wird erreicht, dass unerwünschtes Phantomlicht auch bei Einfallswinkeln unter 10° weitgehend ungehindert die Kollimatorlinse durchdringen und von Gehäuseteilen des LED-Moduls absorbiert werden können. Die LED selbst wird durch ihre Schrägstellung wenig oder nicht durch Phantomlicht in ihrem Leuchtverhalten beeinflusst. The collimator lens effects the parallel direction of the light beams generated by the LED and incident at an inclination angle, for example 7 °, of the LED module to the collimating lens obliquely to the optical axis of the collimator lens. In this way, it is achieved that unwanted phantom light can penetrate the collimator lens largely unhindered even at angles of incidence of less than 10 ° and can be absorbed by housing parts of the LED module. The LED Its inclination itself does not influence phantom light in its luminous behavior, or is affected by phantom light.
Gemäß Anspruch 2 sind die LED-Module mit opak gekapselten Ge- häusen ausgestattet. Auf diese Weise ergibt sich eine optimale Absorption von flach einfallendem Phantomlicht. According to claim 2, the LED modules are equipped with opaque encapsulated housings. This results in optimal absorption of flat incident phantom light.
Vorzugsweise ist gemäß Anspruch 3 vorgesehen, dass die Länge der Kollimatorlinse kleiner als ihr Durchmesser ist. Durch diese im Gegensatz zu bekannten Symbolanzeigern nicht längliche, sondern flache Bauform der Frontlinse wird das Phantomlicht hauptsächlich von Gehäuseteilen im Bereich der Linsenrückseite, d. h. vorzugsweise von Gehäuseteilen, die zum LED- Modul gehören, und nicht von der Mantelfläche der Linse ab- sorbiert . Auf eine vollständige Kapselung jeder einzelnen Kollimatorlinse kann somit verzichtet werden. Preferably, it is provided according to claim 3, that the length of the collimator lens is smaller than its diameter. As a result of these, unlike known symbol indicators, not elongated but flat design of the front lens, the phantom light is mainly produced by housing parts in the area of the rear of the lens, i. H. preferably of housing parts, which belong to the LED module, and not absorbed by the lateral surface of the lens. A complete encapsulation of each individual collimator lens can thus be dispensed with.
Zusätzlich oder alternativ ist gemäß Anspruch 4 vorgesehen, dass die Kollimatorlinsen Eingrauungen aufweisen. Auf diese Weise können stark unterschiedliche Anforderungen an die Visualisierung des Symbols und an die Phantomlichtreduzierung realisiert werden. Die Eingrauung verbessert die Phantombekämpfung insbesondere dann, wenn zu befürchten ist, dass beispielsweise standortbedingt trotz Neigungswinkel zwischen LED-Modul und Frontplatte Fremdlichtreflexionen auftreten können. Das Verhältnis zwischen Phantombekämpfung und Lichtstärke der Pixel kann auf einfache Weise durch Festlegung des Eingrauungsgrades optimiert werden. Anstelle oder zusätzlich zu einer eingegrauten Kollimatorlinse kann auch eine Streu- scheibe oder eine Graufilterscheibe verwendet werden. Additionally or alternatively, it is provided according to claim 4, that the collimator lenses have Eingrauungen. In this way, very different requirements for the visualization of the symbol and the phantom light reduction can be realized. The Eingrauung improves phantom control, especially when it is feared that, for example, due to the location, despite inclination angle between the LED module and front panel extraneous light reflections can occur. The ratio between phantom control and light intensity of the pixels can be optimized in a simple manner by determining the degree of incorporation. Instead of or in addition to a meshed collimator lens, a scattering disk or a gray filter disk can also be used.
Gemäß Anspruch 5 ist die Frontplatte vollflächig mit Kollimatorlinsen bestückt. Durch diese Maßnahme wird die Phantomlichterkennung verbessert, da sich an der Linsenoberfläche reflektiertes Phantomlicht auf die gesamte Oberfläche des Symbolanzeigers gleichermaßen auswirkt und nicht nur die symbolspezifischen Pixel betrifft. Die symbolspezifisch nicht benötigten Pixel können gemäß Anspruch 6 aber auch mit Licht absorbierenden Kappen abgedeckt werden. Vorteilhafterweise können dadurch mit einem Symbolanzeiger unterschiedliche Symbole realisiert werden, wobei bedarfsgemäß die jeweils nicht benötigten Pixel durch Umstecken der lichtabsorbierenden Kappen abgedeckt werden und an diesen Stellen LED-Module ohne LEDs eingesteckt werden. According to claim 5, the front panel is fully loaded with collimator lenses. By this measure, the phantom light detection is improved because of the lens surface reflected phantom light affects the entire surface of the icon indicator equally and affects not only the symbol specific pixels. The symbol-specific unnecessary pixels can be covered according to claim 6 but also with light-absorbing caps. Advantageously, different symbols can thereby be realized with a symbol indicator, whereby according to need the pixels not required in each case are covered by repositioning the light-absorbing caps and LED modules without LEDs are plugged in at these locations.
Dazu sind die LED-Module gemäß Anspruch 7 vorteilhafterweise mittels Schnappverbindung auf die Frontplatte aufsteckbar. Auch die Kollimatorlinsen können auf die andere Seite der Frontplatte aufsteckbar oder aufpressbar sein. Auf diese Weise ergibt sich eine einfache, werkzeuglose Montage der einzelnen Pixel des Symbolanzeigers. Die Erfindung wird nachfolgend einer figürlichen Darstellung erläutert . For this purpose, the LED modules are advantageously according to claim 7 attachable by snap connection to the front panel. The collimator lenses can also be plugged or pressed onto the other side of the front panel. This results in a simple, tool-free installation of the individual pixels of the symbol indicator. The invention will be explained below a figurative representation.
Die Figur zeigt die wesentlichen Bauteile für einen Lichtpunkt oder Pixel eines erfindungsgemäßen Symbolanzeigers an- hand einer Vertikalschnittdarstellung. Es ist ersichtlich, dass ein LED-Modul 1 mit einer Einzel-LED 2 mit einem Neigungswinkel a, der ca. 10° beträgt, relativ zu einer Frontplatte 3 angeordnet ist. In der Frontplatte 3 sind mehrere den LED-Modulen 1 zugeordnete Kollimatorlinsen 4 eingesetzt, welche das schräg auf die Kollimatorlinse 4 auftreffende LED- Licht in im Wesentlichen horizontaler Ausbreitungsrichtung parallel richtet. Dabei sind die für das jeweilige Symbol, beispielsweise Ziffer oder Buchstabe, nicht benötigten Lichtpunkte oder Pixel mit Licht absorbierenden Kappen abgedeckt . Die an diesen Stellen nicht benötigten LED-Module 1 sind durch Blind-Module, d. h. durch LED-Gehäuse 5 ohne LEDs 2 ersetzt. Die für die Symbol-Pixel benötigten LED-Module 1 sind über Anschlussdrähte 6 mit einer nicht dargestellten Treiber- baugruppe zur Ansteuerung des Symbolanzeigers verbunden. Jedes LED-Modul 1 ist mit dem Licht absorbierenden Gehäuse 5 ausgestattet, welches Durchbrüche im Bereich einer LED-Linse 7 aufweist. Weiterhin ist das LED-Modul 1 mit einer Schnappverbindung 8 zur Befestigung an der Frontplatte 3 versehen. Dadurch ist eine einfache, werkzeuglose Montage der LED-Module 1 möglich. Auch die Kollimatorlinse 4 kann auf ähnliche Weise an der Frontplatte 3 auswechselbar befestigt werden. The figure shows the essential components for a light spot or pixel of a symbol indicator according to the invention on the basis of a vertical sectional view. It can be seen that an LED module 1 with a single LED 2 with an inclination angle a, which is approximately 10 °, is arranged relative to a front plate 3. In the front panel 3 a plurality of the LED modules 1 associated collimator lenses 4 are used, which directs the obliquely incident on the collimator lens 4 LED light in a substantially horizontal propagation direction parallel. The light points or pixels not required for the respective symbol, for example a number or a letter, are covered with light-absorbing caps. The LED modules 1 which are not required at these locations are replaced by dummy modules, ie by LED housings 5 without LEDs 2. The LED modules 1 required for the symbol pixels are connected via connecting wires 6 to a driver module, not shown, for actuating the symbol indicator. Each LED module 1 is equipped with the light-absorbing housing 5, which has openings in the region of an LED lens 7. Furthermore, the LED module 1 is provided with a snap connection 8 for attachment to the front panel 3. As a result, a simple, tool-free installation of the LED modules 1 is possible. Also, the collimator lens 4 can be removably attached to the front panel 3 in a similar manner.
Dieser Aufbau zeichnet sich durch sehr wirksame Fremdlichtun- terdrückung aus. Auch sehr flach einfallendes Fremdlicht, z. B. bei niedrigem Sonnenstand, wird an dem LED-Gehäuse 5 absorbiert. Neben der Neigung zwischen LED-Modul 1 und Frontplatte 3 mit dem Winkel α trägt dazu auch die flache Bauform der Kollimatorlinse 4 bei. Fremdlicht kann die Kollimator- linse 4 überwiegend durchdringen, ohne auf die sehr kurzeThis structure is characterized by very effective external light suppression. Also very flat incoming extraneous light, z. B. at low sun, is absorbed to the LED housing 5. In addition to the inclination between LED module 1 and front panel 3 with the angle α contributes to the flat design of the collimator lens 4 at. Extraneous light can predominantly penetrate the collimator lens 4, without affecting the very short one
Mantelfläche der Kollimatorlinse 4 zu treffen, wodurch eine komplette Licht absorbierende Kapselung der Kollimatorlinse 4 entbehrlich ist. Zusätzlich kann die Fremdlichtintensität durch Eingrauung des Linsenmaterials noch weiter verringert werden. Coating surface of the collimator lens 4 to hit, whereby a complete light-absorbing encapsulation of the collimator lens 4 is unnecessary. In addition, the extraneous light intensity can be further reduced by embedding the lens material.
Das beanspruchte Konzept der Pixelerzeugung ermöglicht einen sehr weitgehenden Schutz gegen Fremdlichteinfall, den sogenannten Phantomeffekt, durch Kombination der winkligen Anord- nung zwischen LED-Modul 1 und Frontplatte 3, mit gekapseltem LED-Gehäuse 5, flacher Linsenbauform, Eingrauung des Linsenmaterials, Vollbestückung der Frontplatte 3 und Aufstecken von Kunststoffkappen auf die nicht an dem anzuzeigenden Symbol beteiligten Pixelstellen. The claimed concept of pixel generation allows a very extensive protection against extraneous light, the so-called phantom effect, by combining the angled arrangement between LED module 1 and front panel 3, with encapsulated LED housing 5, flat lens design, lens material, full assembly of the front panel 3 and attaching plastic caps on the pixels not involved in the symbol to be displayed.

Claims

Patentansprüche claims
1. Symbolanzeiger, insbesondere für schienengebundene Verkehrswege, mit LED-Modulen (1) für die pixelweise Visualisie- rung des Symbols und den LED-Modulen (1) zugeordneten Optikelementen, welche auf einer Frontplatte (3) angeordnet sind, d a d u r c h g e k e n n z e i c h n e t , dass 1. Symbol indicators, in particular for rail-bound traffic routes, with LED modules (1) for the pixel-by-pixel visualization of the symbol and the LED modules (1) associated with optical elements, which are arranged on a front panel (3), d a d e r c h e c e n e c e s e s
die LED-Module (1) zur Frontplatte (3) mit einem Winkel (a) geneigt angeordnet sind und dass die Optikelemente als Kolli- matorlinsen (4) ausgebildet sind. the LED modules (1) are arranged inclined to the front plate (3) at an angle (a) and that the optical elements are designed as collimator lenses (4).
2. Symbolanzeiger nach Anspruch 1, 2. Symbol display according to claim 1,
d a d u r c h g e k e n n z e i c h n e t , dass d a d u r c h e c e n c i n e s that
die LED-Module (1) opak gekapselte Gehäuse (5) aufweisen. the LED modules (1) have opaque encapsulated housings (5).
3. Symbolanzeiger nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 3. Symbol display according to one of the preceding claims, d a d u r c h e c e n e c i n e t that
die Länge der Kollimatorlinsen (4) kleiner als ihr Durchmesser ist. the length of the collimator lenses (4) is smaller than their diameter.
4. Symbolanzeiger nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 4. Symbol display according to one of the preceding claims, d a d u r c h e c e n e c i n e t that
die Kollimatorlinsen (4) Eingrauungen aufweisen. the collimator lenses (4) have entrances.
5. Symbolanzeiger nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 5. A symbol display as claimed in any one of the preceding claims, wherein: i
die Frontplatte (3) vollflächig mit Kollimatorlinsen (4) bestückt ist. the front panel (3) is fully loaded with collimator lenses (4).
6. Symbolanzeiger nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass 6. Symbol display according to one of the preceding claims, d a d u r c h e c e n e c h e n e that t
symbolspezifisch nicht benötigte Pixel mit Licht absorbierenden Kappen abdeckbar sind. symbol specific unneeded pixels can be covered with light absorbing caps.
7. Symbolanzeiger nach einem der vorangehenden Ansprüche, d a d u r c h g e k e n n z e i c h n e t , dass die LED-Module (1) mittels Schnappverbindung (8) auf die Frontplatte (3) aufsteckbar sind. 7. Symbol display according to one of the preceding claims, d a d u r c h e c e n e c e s in that the LED modules (1) by means of snap connection (8) on the front panel (3) can be plugged.
PCT/EP2011/052517 2010-02-24 2011-02-21 Symbol indicator WO2011104205A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DK11706506.0T DK2539877T3 (en) 2010-02-24 2011-02-21 symbol Shows
EP11706506.0A EP2539877B1 (en) 2010-02-24 2011-02-21 Symbol indicator
ES11706506.0T ES2649397T3 (en) 2010-02-24 2011-02-21 Indicator for symbols

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010009429A DE102010009429A1 (en) 2010-02-24 2010-02-24 Symbol Gazette
DE102010009429.3 2010-02-24

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WO2011104205A1 true WO2011104205A1 (en) 2011-09-01

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EP (1) EP2539877B1 (en)
DE (1) DE102010009429A1 (en)
DK (1) DK2539877T3 (en)
ES (1) ES2649397T3 (en)
NO (1) NO2539877T3 (en)
WO (1) WO2011104205A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018205652A1 (en) * 2018-04-13 2019-10-17 Siemens Mobility GmbH Light source for a signaling device with light guide and signal device with such a light source

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EP1091167A2 (en) * 1999-10-08 2001-04-11 SWARCO FUTURIT Verkehrssignalsysteme Ges.m.b.H. Signalling device comprising LED-arrays
WO2002015281A2 (en) * 2000-08-17 2002-02-21 Power Signal Technologies, Inc. Glass-to-metal hermetically sealed led array
WO2002071812A2 (en) * 2001-01-09 2002-09-12 Gelcore Llc Device to monitor a led traffic light
US20030025450A1 (en) * 2001-08-01 2003-02-06 Hiroyuki Katayama LED lamp and LED lamp manufacturing method

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FR2712108B3 (en) * 1993-11-04 1995-10-27 Adaptive Micro Systems Inc Electronic display device comprising a plurality of display elements.
GB2390669B (en) * 1999-11-26 2004-03-10 Dorman Traffic Products Ltd Signal apparatus
EP1227458A3 (en) * 2001-01-11 2004-12-22 Dr. techn. Josef Zelisko, Fabrik für Elektrotechnik und Maschinenbau Gesellschaft m.b.H. Display and/or signalling device

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Publication number Priority date Publication date Assignee Title
EP1091167A2 (en) * 1999-10-08 2001-04-11 SWARCO FUTURIT Verkehrssignalsysteme Ges.m.b.H. Signalling device comprising LED-arrays
WO2002015281A2 (en) * 2000-08-17 2002-02-21 Power Signal Technologies, Inc. Glass-to-metal hermetically sealed led array
WO2002071812A2 (en) * 2001-01-09 2002-09-12 Gelcore Llc Device to monitor a led traffic light
US20030025450A1 (en) * 2001-08-01 2003-02-06 Hiroyuki Katayama LED lamp and LED lamp manufacturing method

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DE102010009429A1 (en) 2011-08-25
DK2539877T3 (en) 2017-10-09
EP2539877B1 (en) 2017-08-30
EP2539877A1 (en) 2013-01-02
NO2539877T3 (en) 2018-01-27
ES2649397T3 (en) 2018-01-11

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