EP2539877B1 - Indicateur de symbole - Google Patents

Indicateur de symbole Download PDF

Info

Publication number
EP2539877B1
EP2539877B1 EP11706506.0A EP11706506A EP2539877B1 EP 2539877 B1 EP2539877 B1 EP 2539877B1 EP 11706506 A EP11706506 A EP 11706506A EP 2539877 B1 EP2539877 B1 EP 2539877B1
Authority
EP
European Patent Office
Prior art keywords
light
symbol
symbol indicator
led modules
led
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.)
Not-in-force
Application number
EP11706506.0A
Other languages
German (de)
English (en)
Other versions
EP2539877A1 (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
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 AG filed Critical Siemens AG
Publication of EP2539877A1 publication Critical patent/EP2539877A1/fr
Application granted granted Critical
Publication of EP2539877B1 publication Critical patent/EP2539877B1/fr
Not-in-force 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-by-pixel visualization of the symbol and the LED modules associated with optical elements, which are arranged on a front panel, wherein the LED modules are arranged inclined to the front panel with an angle and the optical elements are designed as Kollimatorlinsen.
  • 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, axle light intensity, color and phantom protection, is subject to the field-tested requirements of railway operations.
  • 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.
  • the LED technology predominantly several LED light sources per Pixel used, 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.
  • 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 device mainly in that the lens body of the single pixel has an elongated shape, wherein an opaque sheath is provided, which penetrating radiation absorbs. Due to the geometrical construction of the elongated lens body, it can be achieved that almost all extraneous light rays penetrating from outside at an angle of at least 10 ° are conducted onto the light-absorbing underside of the lens body.
  • WO02 / 071812 A2 and the WO02 / 15281 A2 are symbol indicators with collimator lens and known to this obliquely arranged LED modules.
  • 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.
  • 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 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.
  • 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, at the same time a simplification of assembly is sought.
  • the object is achieved in that the LED modules are arranged inclined to the front panel at an angle and the optical elements are designed as Kollimatorlinsen.
  • the LED modules advantageously by means of snap-on connection can be plugged onto the front panel, the LED modules have opaque encapsulated housings and symbol-specific unneeded pixels are covered with light-absorbing caps.
  • the opaque housing of each LED module results in optimal absorption of flat incident phantom light.
  • this can be realized with a symbol indicator different symbols; wherein, according to need, the respectively unneeded pixels are covered by repositioning the light-absorbing caps and LED modules are inserted without LEDs at these locations.
  • 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 length of the collimator lens is smaller than its diameter.
  • the phantom light is absorbed mainly by housing parts in the region of the lens back, ie preferably of housing parts that belong to the LED module, and not from 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. Instead of or in addition to a grave collimator lens and a diffusing screen or a gray filter disc can be used.
  • the front panel is fully loaded with collimator lenses. This feature improves phantom light detection because phantom light reflected at the lens surface affects the entire surface of the icon indicator equally and does not only affect the symbol specific pixels.
  • 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 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 direction of propagation parallel.
  • the for each symbol For example, numeral or letter, unneeded points of light or pixels covered with light-absorbing caps.
  • the LED modules 1 that are not required at these locations are identified by blind modules, i. H. replaced by LED housing 5 without LEDs 2.
  • the LED modules 1 required for the symbol pixels are connected via connecting wires 6 to a driver assembly (not shown) for driving 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.
  • the LED module 1 is provided with a snap connection 8 for attachment to the front panel 3.
  • the collimator lens 4 can be removably attached to the front panel 3 in a similar manner.
  • This structure is characterized by very 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 design of the collimator lens 4 at. Extraneous light can penetrate the collimator lens 4 predominantly, without encountering the very short lateral surface of the collimator lens 4, whereby a complete light-absorbing encapsulation of the collimator lens 4 is dispensable. In addition, 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, Vollbe conductedung the front panel 3 and Placing plastic caps on the pixel points not involved in the symbol to be displayed.

Claims (4)

  1. Indicateur de symbole, notamment pour des voies de communication ferroviaires, comprenant des modules DEL (1) pour la visualisation pixel par pixel du symbole et des éléments optiques associés aux modules DEL (1), qui sont montés sur une plaque (3) avant, dans lequel les modules DEL (1) sont inclinés d'un angle (α) par rapport à la plaque (3) avant et les éléments optiques sont constitués sous la forme de lentilles (4) collimatrices,
    caractérisé en ce que
    les modules DEL (1) ont un boîtier (5) encapsulé de manière opaque et peuvent être enfichés sur la plaque (3) avant au moyen d'une liaison (8) par déclic, des pixels, non nécessaires spécifiquement au symbole, pouvant être recouverts par des coiffes absorbant la lumière.
  2. 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.
  3. Indicateur de symbole suivant l'une des revendications précédentes,
    caractérisé en ce que
    les lentilles (4) collimatrices ont des insertions de gris.
  4. Indicateur de symbole suivant l'une des revendications précédentes,
    caractérisé en ce que
    la plaque (3) avant est équipée complètement de lentilles (4) collimatrices.
EP11706506.0A 2010-02-24 2011-02-21 Indicateur de symbole Not-in-force EP2539877B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010009429A DE102010009429A1 (de) 2010-02-24 2010-02-24 Symbolanzeiger
PCT/EP2011/052517 WO2011104205A1 (fr) 2010-02-24 2011-02-21 Indicateur de symbole

Publications (2)

Publication Number Publication Date
EP2539877A1 EP2539877A1 (fr) 2013-01-02
EP2539877B1 true EP2539877B1 (fr) 2017-08-30

Family

ID=44243582

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11706506.0A Not-in-force EP2539877B1 (fr) 2010-02-24 2011-02-21 Indicateur de symbole

Country Status (6)

Country Link
EP (1) EP2539877B1 (fr)
DE (1) DE102010009429A1 (fr)
DK (1) DK2539877T3 (fr)
ES (1) ES2649397T3 (fr)
NO (1) NO2539877T3 (fr)
WO (1) WO2011104205A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018205652A1 (de) * 2018-04-13 2019-10-17 Siemens Mobility GmbH Lichtquelle für eine Signaleinrichtung mit Lichtleitelement und Signaleinrichtung mit einer solchen Lichtquelle

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1352544A2 (fr) * 2001-01-09 2003-10-15 Gelcore Llc Signalisation a diodes electroluminescentes permettant de detecter une degradation de lumiere, dotee d'un collecteur a conduite de lumiere

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712108B3 (fr) * 1993-11-04 1995-10-27 Adaptive Micro Systems Inc Dispositif d'affichage électronique comportant une pluralité d'éléments d'affichage.
AT410711B (de) * 1999-10-08 2003-07-25 Swarco Futurit Verkehrssignals Signalgeberoptik mit led-reihen
GB2390669B (en) * 1999-11-26 2004-03-10 Dorman Traffic Products Ltd Signal apparatus
WO2002015281A2 (fr) * 2000-08-17 2002-02-21 Power Signal Technologies, Inc. Reseau de diodes electroluminescentes a joint hermetique verre sur metal utilise dans un dispositif lumineux a semi-conducteurs etanche
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
JP2003046138A (ja) * 2001-08-01 2003-02-14 Sharp Corp Ｌｅｄランプ及びｌｅｄランプ製造方法

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1352544A2 (fr) * 2001-01-09 2003-10-15 Gelcore Llc Signalisation a diodes electroluminescentes permettant de detecter une degradation de lumiere, dotee d'un collecteur a conduite de lumiere

Also Published As

Publication number Publication date
DK2539877T3 (en) 2017-10-09
ES2649397T3 (es) 2018-01-11
NO2539877T3 (fr) 2018-01-27
EP2539877A1 (fr) 2013-01-02
DE102010009429A1 (de) 2011-08-25
WO2011104205A1 (fr) 2011-09-01

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