EP2539878B1 - Symbol indicator - Google Patents
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- EP2539878B1 EP2539878B1 EP11706508.6A EP11706508A EP2539878B1 EP 2539878 B1 EP2539878 B1 EP 2539878B1 EP 11706508 A EP11706508 A EP 11706508A EP 2539878 B1 EP2539878 B1 EP 2539878B1
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- Prior art keywords
- symbol
- led
- led modules
- symbol indicator
- light
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- 230000003287 optical effect Effects 0.000 claims description 15
- 230000000694 effects Effects 0.000 description 4
- 239000013307 optical fiber Substances 0.000 description 4
- 230000001419 dependent effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006735 deficit Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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Classifications
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- 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
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- 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 the pixel-wise remote and short-range representation 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, are formed from 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 for the distance and near range representation, 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.
- the light bulb technology the light of a central signal lamp is coupled into an optical fiber bundle, distributed over the fibers and transported to the front lenses of the pixels.
- several LED light sources are used per pixel, usually two for long-range display and two for short-range display.
- the light distribution for the Nach Schlsdar too takes place via multiple reflections in optical fibers, while serving for long-range representation special auxiliary lenses.
- By means of an elongated front lens pressed in the front panel the light paths are combined.
- Such LED modules and the associated lenses and optical fibers are usually arranged directly on the front panel of the symbol indicator. For each symbol to be displayed, a special, symbol-specific front panel is provided.
- the disadvantage is especially the complex optical system, associated with a variety of components and considerable logistical effort.
- LED modules Another problem with LED modules is the flare or falsification of a pixel, referred to as a phantom effect, due to the incidence of ambient light, eg. B. sunshine or spotlight.
- 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 by reflections an illuminated, d. H. activated symbol, even though the symbol indicator is deactivated.
- Reflection protection against extraneous light is realized in the symbol indicator mainly in that the lens body of the single pixel has an elongated shape, wherein an opaque sheath is provided, which absorbs the penetrating radiation.
- WO 02/071812 A2 discloses a symbol indicator, in particular for rail-bound traffic routes, with LED modules for the pixel-wise remote and near-field representation of the symbol and the LED modules associated optical elements, which are arranged in the vicinity of a front panel on an optical element plate, wherein the LED modules each have a Have LED and that the optical elements as collimator lenses with spherical surfaces for long-range display and Nah Schlsdarwolf are formed, wherein the optical element plate is fully loaded with collimator lenses and symbol-specific required pixels are implemented by LED modules.
- the invention has for its object to provide a symbol indicator of the generic type, in which different symbols with a smaller number of optical and mechanical Components are feasible and in which an impairment of safety due to the phantom effect is largely avoidable.
- the object is achieved in that the LED modules each have a LED lens provided with an LED and that the optical elements are designed as Kollimatorlinsen with a first spherical surface for long-range representation and a second spherical surface for Nah Schlsdar too, the front panel over Collimator lenses is equipped and symbol-specific required pixels are implemented by LED modules.
- a single LED or high-power LED is sufficient due to the increased efficiency of marketable semiconductor emitters to achieve the same brightness with the same current as with a LED module with 4 LEDs.
- LEDs which must be combined with conversion lenses, optical fibers and an elongated front lens, only one LED with standard LED lens and a collimator lens with optical surfaces for the remote and Nach Schlsdarwolf are required per pixel. This results in a significant reduction in the number of parts associated with simpler logistics and warehousing at a reduced cost.
- phantom light detection is improved because phantom light reflected at the lens surface affects the entire surface of the symbol indicator equally and does not only affect the symbol specific pixels.
- the symbol-specifically unnecessary pixels can be additionally covered according to claim 2 with light-absorbing caps. According to requirements, the symbol to be displayed can be changed easily and quickly by repositioning the light-absorbing caps, with LED modules inserted without LEDs at these locations.
- the length of the collimator lens is smaller than its diameter.
- flat design of the front lens results in a significant material savings.
- Disturbing phantom light, for example, flat incident sunlight is mainly from housing parts in the area of the lens back, d. 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 LED modules are arranged inclined to the front panel at an angle and have opaque encapsulated housing.
- 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 collimator lens obliquely to the optical axis of the collimator lens.
- a part of the light is directed parallel in the far range, ie in a substantially horizontal direction, and the rest of the light is collimated in the near range, that is, obliquely downward, through the different optical surfaces of the collimator lens.
- the inclination angle ensures that unwanted phantom light penetrate the collimator lens largely unhindered even at angles of incidence of less than 10 ° and of the opaque encapsulated housing parts of the LED module can be absorbed.
- the LED itself is influenced by its inclination little or not by phantom light in their lighting behavior.
- the LED modules are advantageously according to claim 5 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 figure shows the essential components for a light spot or pixel of a symbol indicator according to the invention with reference to a vertical sectional view.
- an LED module 1 with a single LED 2 with an inclination angle ⁇ , which is approximately 7 °, is arranged relative to a front plate 3.
- a plurality of the LED modules 1 associated Kollimatorlinsen 4 are used over the entire surface, each Kollimatorlinse 4 a portion of the obliquely incident on the collimator lens 4 LED light due to their shape in a substantially horizontal propagation direction for long-range display and the remaining LED light obliquely directed down to Nah Schlsdar too parallel.
- the light spots or pixels not required for the respective symbol can be 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 with a driver assembly, not shown, for driving the symbol indicator connected.
- 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.
- This structure is also characterized by effective extraneous 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, material-saving design of the collimator lens 4 at.
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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)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Die Erfindung betrifft einen Symbolanzeiger, insbesondere für schienengebundene Verkehrswege, mit LED-Modulen für die pixelweise Fern- und Nahbereichsdarstellung 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 the pixel-wise remote and short-range representation 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 Anordnung definierter Einzelpixel. Zur Ansteuerung des Symbols wird üblicherweise eine elektrische Treiberbaugruppe eingesetzt. Das Abstrahlverhalten der Symbolanzeiger, insbesondere Lichtverteilung für die Fern- und Nahbereichsdarstellung, Achslichtstärke, Farbe und Phantomschutz, unterliegt den felderprobten Anforderungen des Eisenbahnbetriebes.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, are formed from 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 for the distance and near range representation, 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 Lichtleiterbündel eingekoppelt, über dessen Fasern verteilt und auf die Frontlinsen der Pixel transportiert. Bei der LED-Technik hingegen werden mehrere LED-Lichtquellen pro Pixel eingesetzt, üblicherweise zwei zur Fernbereichsdarstellung und zwei zur Nahbereichsdarstellug. Die Lichtverteilung für die Nachbereichsdarstellung erfolgt dabei über Vielfachreflexien in Lichtleitern, während zur Fernbereichsdarstellung spezielle Vorsatzlinsen dienen. Mittels einer langgestreckten, in der Frontplatte eingepressten Frontlinse werden die Lichtwege kombiniert. Derartige LED-Module und die zugehörigen Linsen und Lichtleiter sind üblicherweise direkt an der Frontplatte des Symbolanzeigers angeordnet. Für jedes darzustellende Symbol ist eine spezielle, symbolspezifische Frontplatte vorgesehen. Nachteilig ist vor allem das komplexe optische System, verbunden mit einer Vielzahl von Komponenten und erheblichem logistischem Aufwand.The pixels of the symbol indicator are illuminated by different optical methods. In the light bulb technology, the light of a central signal lamp is coupled into an optical fiber bundle, distributed over the fibers and transported to the front lenses of the pixels. In the case of LED technology, on the other hand, several LED light sources are used per pixel, usually two for long-range display and two for short-range display. The light distribution for the Nachbereichsdarstellung takes place via multiple reflections in optical fibers, while serving for long-range representation special auxiliary lenses. By means of an elongated front lens pressed in the front panel, the light paths are combined. Such LED modules and the associated lenses and optical fibers are usually arranged directly on the front panel of the symbol indicator. For each symbol to be displayed, a special, symbol-specific front panel is provided. The disadvantage is especially the complex optical system, associated with a variety of components and considerable logistical effort.
Problematisch bei LED-Modulen ist außerdem das als Phantomeffekt bezeichnete Aufleuchten bzw. Verfälschen eines Pixels durch Einfall von Umgebungslicht, z. B. Sonneneinstrahlung oder Scheinwerferlicht. 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.Another problem with LED modules is the flare or falsification of a pixel, referred to as a phantom effect, due to the incidence of ambient light, eg. B. sunshine or spotlight. 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 by reflections an illuminated, d. H. activated symbol, even though the symbol indicator is deactivated.
Reflexionsschutz gegenüber Fremdlicht wird beim Symbolanzeiger hauptsächlich dadurch realisiert, dass der Linsenkörper des Einzelpixels eine langgestreckte Form aufweist, wobei eine lichtundurchlässige Ummantelung vorgesehen ist, die die eindringende Strahlung absorbiert.Reflection protection against extraneous light is realized in the symbol indicator mainly in that the lens body of the single pixel has an elongated shape, wherein an opaque sheath is provided, which absorbs the penetrating radiation.
Der Erfindung liegt die Aufgabe zugrunde, einen Symbolanzeiger der gattungsgemäßen Art anzugeben, bei dem unterschiedliche Symbole mit geringerer Anzahl optischer und mechanischer Komponenten realisierbar sind und bei dem eine Beeinträchtigung der Sicherheit infolge des Phantomeffektes weitgehender vermeidbar ist.The invention has for its object to provide a symbol indicator of the generic type, in which different symbols with a smaller number of optical and mechanical Components are feasible and in which an impairment of safety due to the phantom effect is largely avoidable.
Erfindungsgemäß wird die Aufgabe dadurch gelöst, dass die LED-Module jeweils eine mit einer LED-Linse versehene LED aufweisen und dass die Optikelemente als Kollimatorlinsen mit einer ersten sphärischen Fläche zur Fernbereichsdarstellung und einer zweiten sphärischen Fläche zur Nahbereichsdarstellung ausgebildet sind, wobei die Frontplatte vollflächig mit Kollimatorlinsen bestückt ist und symbolspezifisch benötigte Pixel durch LED-Module realisiert sind.According to the invention the object is achieved in that the LED modules each have a LED lens provided with an LED and that the optical elements are designed as Kollimatorlinsen with a first spherical surface for long-range representation and a second spherical surface for Nahbereichsdarstellung, the front panel over Collimator lenses is equipped and symbol-specific required pixels are implemented by LED modules.
Durch diese Maßnahmen lassen sich mit einem einzigen Symbolanzeiger bzw. mit einer einzigen Frontplatte unterschiedliche Symbole realisieren. Eine einzige LED oder Hochstrom-LED (HLED) reicht aufgrund der gesteigerten Effizienz bei marktverfügbaren Halbleiteremittern aus, um bei gleicher Bestromung die gleiche Helligkeit wie bei einem LED-Modul mit 4 LEDs zu erreichen. Statt mehrerer LEDs, die mit Vorsatzlinsen, Lichtleitern und einer langgestreckten Frontlinse kombiniert werden müssen, sind pro Pixel nur noch eine LED mit standardmäßiger LED-Linse sowie eine Kollimatorlinse mit optischen Flächen für die Fern- und Nachbereichsdarstellung erforderlich. Dadurch ergibt sich eine erhebliche Reduzierung der Teileanzahl verbunden mit einfacherer Logistik und Lagerhaltung bei verringerten Kosten.Through these measures, different symbols can be realized with a single symbol indicator or with a single front panel. A single LED or high-power LED (HLED) is sufficient due to the increased efficiency of marketable semiconductor emitters to achieve the same brightness with the same current as with a LED module with 4 LEDs. Instead of multiple LEDs, which must be combined with conversion lenses, optical fibers and an elongated front lens, only one LED with standard LED lens and a collimator lens with optical surfaces for the remote and Nachbereichsdarstellung are required per pixel. This results in a significant reduction in the number of parts associated with simpler logistics and warehousing at a reduced cost.
Darüber hinaus 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.In addition, phantom light detection is improved because phantom light reflected at the lens surface affects the entire surface of the symbol indicator equally and does not only affect the symbol specific pixels.
Die symbolspezifisch nicht benötigten Pixel können gemäß Anspruch 2 zusätzlich mit Licht absorbierenden Kappen abgedeckt werden. Bedarfsgemäß kann das darzustellende Symbol einfach und schnell durch Umstecken der lichtabsorbierenden Kappen gewechselt werden, wobei an diesen Stellen LED-Module ohne LEDs eingesteckt werden.The symbol-specifically unnecessary pixels can be additionally covered according to
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 ergibt sich eine erhebliche Materialeinsparung. Störendes Phantomlicht, beispielsweise flach einfallendes Sonnenlicht, wird hauptsächlich von Gehäuseteilen im Bereich der Linsenrückseite, d. h. vorzugsweise von Gehäuseteilen, die zum LED-Modul gehören, und nicht von der Mantelfläche der Linse absorbiert. 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. By this, in contrast to known symbol indicators not elongated, but flat design of the front lens results in a significant material savings. Disturbing phantom light, for example, flat incident sunlight is mainly from housing parts in the area of the lens back, d. 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 LED-Module zur Frontplatte mit einem Winkel geneigt angeordnet sind und opak gekapselte Gehäuse aufweisen. Die Kollimatorlinse bewirkt die Parallelrichtung der Lichtstrahlen, die von der LED erzeugt werden und entsprechend dem Neigungswinkel, beispielsweise 7°, des LED-Moduls zur Kollimatorlinse schräg zur optischen Achse der Kollimatorlinse einfallen. Dabei wird durch die unterschiedlichen optischen Flächen der Kollimatorlinse ein Teil des Lichtes in den Fernbereich, d. h. in im Wesentlichen horizontaler Richtung parallelgerichtet und das restliche Licht in den Nahbereich, also schräg nach unten, parallelgerichtet. Durch den Neigungswinkel wird erreicht, dass unerwünschtes Phantomlicht auch bei Einfallswinkeln unter 10° weitgehend ungehindert die Kollimatorlinse durchdringen und von den opak gekapselten Gehäuseteilen des LED-Moduls absorbiert werden können. Die LED selbst wird durch ihre Schrägstellung wenig oder nicht durch Phantomlicht in ihrem Leuchtverhalten beeinflusst.Additionally or alternatively, it is provided according to
Die LED-Module sind gemäß Anspruch 5 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.The LED modules are advantageously according to claim 5 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.
Die Erfindung wird nachfolgend einer figürlichen Darstellung erläutert.The invention will be explained below a figurative representation.
Die Figur zeigt die wesentlichen Bauteile für einen Lichtpunkt oder Pixel eines erfindungsgemäßen Symbolanzeigers anhand einer Vertikalschnittdarstellung. Es ist ersichtlich, dass ein LED-Modul 1 mit einer Einzel-LED 2 mit einem Neigungswinkel α, der ca. 7° beträgt, relativ zu einer Frontplatte 3 angeordnet ist. In der Frontplatte 3 sind vollflächig mehrere den LED-Modulen 1 zugeordnete Kollimatorlinsen 4 eingesetzt, wobei jede Kollimatorlinse 4 einen Teil des schräg auf die Kollimatorlinse 4 auftreffenden LED-Lichts aufgrund ihrer Formgebung in im Wesentlichen horizontaler Ausbreitungsrichtung zur Fernbereichsdarstellung und das restliche LED-Licht schräg nach unten zur Nahbereichsdarstellung parallel richtet. Dabei können die für das jeweilige Symbol, beispielsweise Ziffer oder Buchstabe, nicht benötigten Lichtpunkte oder Pixel mit Licht absorbierenden Kappen abgedeckt werden. 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 Treiberbaugruppe 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.The figure shows the essential components for a light spot or pixel of a symbol indicator according to the invention with reference to a vertical sectional view. It can be seen that an LED module 1 with a
Durch die Verwendung von nur einer LED 2 pro LED-Modul 1 und Pixel in Verbindung mit der speziellen Kollimatorlinse 4 anstelle mehrerer Optikelemente sowie einer für verschiedene darzustellende Symbole identischen Frontplatte 3 ergibt sich eine teile- und kostensparende Bauform. Verschiedene Symbole lassen sich durch Umstecken der LED-Module 1 und Blind-Module auf der Frontplatte 3 realisieren.Through the use of only one
Dieser Aufbau zeichnet sich außerdem durch wirksame Fremdlichtunterdrückung 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, materialsparende Bauform der Kollimatorlinse 4 bei.This structure is also characterized by effective extraneous light suppression. Also very flat incoming extraneous light, z. B. at low sun, is absorbed to the
Claims (5)
- Symbol indicator, in particular for rail-bound traffic routes, comprising LED modules (1) for far and near field representation of the symbol in pixels, and optical elements which are assigned to the LED modules (1) and are arranged on a front plate (3),
characterized in that the LED modules (1) each comprise an LED (2), and in that the optical elements are formed as collimator lenses (4) comprising a first spherical surface for the far field representation and a second spherical surface for the near field representation, the front plate (3) being equipped surface-wide with collimator lenses (4) and symbol-specifically required pixels being formed by LED modules (1). - Symbol indicator according to Claim 1, characterized in that symbol-specifically unrequired pixels can be covered by light-absorbing caps.
- Symbol indicator according to one of the preceding claims,
characterized in that the length of the collimator lenses (4) is less than their diameter. - Symbol indicator according to one of the preceding claims,
characterized in that the LED modules (1) are arranged inclined by an angle (α) with respect to the front plate (3) and have an opaquely encapsulated housing (5). - Symbol indicator according to one of the preceding claims,
characterized in that the LED modules (1) can be fitted onto the front plate (3) by means of snap-on connection (8).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201010009432 DE102010009432A1 (en) | 2010-02-24 | 2010-02-24 | Symbol Gazette |
PCT/EP2011/052521 WO2011104206A1 (en) | 2010-02-24 | 2011-02-21 | Symbol indicator |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2539878A1 EP2539878A1 (en) | 2013-01-02 |
EP2539878B1 true EP2539878B1 (en) | 2014-12-17 |
Family
ID=44202132
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11706508.6A Active EP2539878B1 (en) | 2010-02-24 | 2011-02-21 | Symbol indicator |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2539878B1 (en) |
CN (1) | CN102770896B (en) |
DE (1) | DE102010009432A1 (en) |
ES (1) | ES2528444T3 (en) |
WO (1) | WO2011104206A1 (en) |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH01130181A (en) * | 1987-11-17 | 1989-05-23 | Nippon Signal Co Ltd:The | Display lamp |
AT500056B8 (en) * | 1998-01-19 | 2007-02-15 | Swarco Futurit Verkehrssignals | OPTIC ELEMENT FOR TRAFFIC SIGNS, INDICATOR TABLES OR DGL. |
CN2374931Y (en) * | 1999-07-07 | 2000-04-19 | 光磊科技股份有限公司 | Refracting lens of LED traffic signal light |
EP1352544A2 (en) * | 2001-01-09 | 2003-10-15 | Gelcore Llc | Device to monitor a led traffic lights |
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 |
AT500013B1 (en) * | 2003-01-31 | 2006-10-15 | Swarco Futurit Verkehrssysteme | OPTIC ELEMENT FOR INTERMEDIATE TRANSPARENCIES |
DE102005002535B3 (en) * | 2005-01-14 | 2006-03-23 | Siemens Ag | Traffic sign for guidance of road vehicles has array of LED's giving variable display, each with scattering lens behind opaque screen with transparent windows |
DE502006007871D1 (en) * | 2005-02-28 | 2010-10-28 | Osram Opto Semiconductors Gmbh | LED display device |
JP4861997B2 (en) * | 2008-01-16 | 2012-01-25 | 東芝電波プロダクツ株式会社 | Far and near laser optics |
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2010
- 2010-02-24 DE DE201010009432 patent/DE102010009432A1/en not_active Ceased
-
2011
- 2011-02-21 EP EP11706508.6A patent/EP2539878B1/en active Active
- 2011-02-21 CN CN201180011057.6A patent/CN102770896B/en not_active Expired - Fee Related
- 2011-02-21 ES ES11706508.6T patent/ES2528444T3/en active Active
- 2011-02-21 WO PCT/EP2011/052521 patent/WO2011104206A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2011104206A1 (en) | 2011-09-01 |
ES2528444T3 (en) | 2015-02-10 |
CN102770896A (en) | 2012-11-07 |
EP2539878A1 (en) | 2013-01-02 |
DE102010009432A1 (en) | 2011-08-25 |
CN102770896B (en) | 2015-11-25 |
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