EP2539878B1 - Indicateur de symbole - Google Patents

Indicateur de symbole Download PDF

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Publication number
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
Authority
EP
European Patent Office
Prior art keywords
symbol
led
led modules
symbol indicator
light
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.)
Active
Application number
EP11706508.6A
Other languages
German (de)
English (en)
Other versions
EP2539878A1 (fr
Inventor
Rolf Eckl
Uwe Frost
Kay Köster
Jan Oertel
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
Original Assignee
Siemens AG
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2539878A1 publication Critical patent/EP2539878A1/fr
Application granted granted Critical
Publication of EP2539878B1 publication Critical patent/EP2539878B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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 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.

Landscapes

  • 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)

Claims (5)

  1. Indicateur de symbole, notamment pour des voies de circulation ferroviaires, comprenant des modules LED (1) pour la représentation pixel par pixel en zone lointaine et en zone proche du symbole et des éléments optiques associés au module LED (1), qui sont disposés sur une plaque (3) frontale,
    caractérisé en ce que les modules LED ( 1 ) ont respectivement une LED ( 2 ) et en ce que les éléments optiques sont constitués sous la forme de lentilles ( 4 ) collimatrices ayant une première surface sphérique pour la représentation en champ lointain et une deuxième surface sphérique pour la représentation en champ proche, la plaque ( 3 ) frontale étant équipée, sur toute sa surface, de lentilles ( 4 ) collimatrices et des pixels nécessités spécifiquement au symbole sont réalisés par des modules LED ( 1 ).
  2. Indicateur de symbole suivant la revendication 1,
    caractérisé en ce que des pixels, qui ne sont pas nécessités spécifiquement au symbole, peuvent être recouverts par des capuchons absorbant la lumière.
  3. Indicateur de symbole suivant l'une des revendications précédentes,
    caractérisé en ce que la longueur des lentilles ( 4 ) collimatrices est plus petite que leur diamètre.
  4. Indicateur de symbole suivant l'une des revendications précédentes,
    caractérisé en ce que les modules LED ( 1 ) sont inclinés par rapport à la plaque ( 3 ) frontale d'un angle ( α ) et ont des boîtiers ( 5 ) encapsulés de manière opaque.
  5. Indicateur de symbole suivant l'une des revendications précédentes,
    caractérisé en ce que les modules LED ( 1 ) peuvent être enfilés sur la plaque ( 3 ) frontale au moyen d'une liaison ( 8 ) à déclic.
EP11706508.6A 2010-02-24 2011-02-21 Indicateur de symbole Active EP2539878B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201010009432 DE102010009432A1 (de) 2010-02-24 2010-02-24 Symbolanzeiger
PCT/EP2011/052521 WO2011104206A1 (fr) 2010-02-24 2011-02-21 Indicateur de symbole

Publications (2)

Publication Number Publication Date
EP2539878A1 EP2539878A1 (fr) 2013-01-02
EP2539878B1 true EP2539878B1 (fr) 2014-12-17

Family

ID=44202132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11706508.6A Active EP2539878B1 (fr) 2010-02-24 2011-02-21 Indicateur de symbole

Country Status (5)

Country Link
EP (1) EP2539878B1 (fr)
CN (1) CN102770896B (fr)
DE (1) DE102010009432A1 (fr)
ES (1) ES2528444T3 (fr)
WO (1) WO2011104206A1 (fr)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01130181A (ja) * 1987-11-17 1989-05-23 Nippon Signal Co Ltd:The 表示灯
AT500056B8 (de) * 1998-01-19 2007-02-15 Swarco Futurit Verkehrssignals Optikelement für verkehrszeichen, anzeigetafeln oder dgl.
CN2374931Y (zh) * 1999-07-07 2000-04-19 光磊科技股份有限公司 发光二极体交通信号灯的折射透镜
AU2001297694A1 (en) * 2001-01-09 2002-09-19 Gelcore Llc Device to monitor a led traffic light
EP1227458A3 (fr) * 2001-01-11 2004-12-22 Dr. techn. Josef Zelisko, Fabrik für Elektrotechnik und Maschinenbau Gesellschaft m.b.H. Dispositif d' affichage et /ou de signalisation
AT500013B1 (de) * 2003-01-31 2006-10-15 Swarco Futurit Verkehrssysteme Optikelement für wechselverkehrszeichen
DE102005002535B3 (de) * 2005-01-14 2006-03-23 Siemens Ag Lichtzeichenanlage
DE502006007871D1 (de) * 2005-02-28 2010-10-28 Osram Opto Semiconductors Gmbh LED-Anzeigevorrichtung
JP4861997B2 (ja) * 2008-01-16 2012-01-25 東芝電波プロダクツ株式会社 遠近両用レーザ光学装置

Also Published As

Publication number Publication date
EP2539878A1 (fr) 2013-01-02
WO2011104206A1 (fr) 2011-09-01
CN102770896B (zh) 2015-11-25
CN102770896A (zh) 2012-11-07
DE102010009432A1 (de) 2011-08-25
ES2528444T3 (es) 2015-02-10

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