EP1012023B1 - Feux a plusieurs diodes electroluminescentes - Google Patents

Feux a plusieurs diodes electroluminescentes Download PDF

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Publication number
EP1012023B1
EP1012023B1 EP98940445A EP98940445A EP1012023B1 EP 1012023 B1 EP1012023 B1 EP 1012023B1 EP 98940445 A EP98940445 A EP 98940445A EP 98940445 A EP98940445 A EP 98940445A EP 1012023 B1 EP1012023 B1 EP 1012023B1
Authority
EP
European Patent Office
Prior art keywords
leds
light
signalling
light according
array
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.)
Expired - Lifetime
Application number
EP98940445A
Other languages
German (de)
English (en)
Other versions
EP1012023A1 (fr
Inventor
David Peter Howells
Michael Howells
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.)
Howells Railway Products Ltd
Original Assignee
Howells Railway Products Ltd
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
Priority claimed from GBGB9718643.1A external-priority patent/GB9718643D0/en
Priority claimed from GBGB9722368.9A external-priority patent/GB9722368D0/en
Application filed by Howells Railway Products Ltd filed Critical Howells Railway Products Ltd
Publication of EP1012023A1 publication Critical patent/EP1012023A1/fr
Application granted granted Critical
Publication of EP1012023B1 publication Critical patent/EP1012023B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
    • B61L5/12—Visible signals
    • B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
    • B61L5/1809—Daylight signals
    • B61L5/1827—Daylight signals using light sources of different colours and a common optical system
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
    • B61L2207/00—Features of light signals
    • B61L2207/02—Features of light signals using light-emitting diodes [LEDs]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/10—Light sources with three-dimensionally disposed light-generating elements on concave supports or substrates, e.g. on the inner side of bowl-shaped supports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the combination of the array of LEDs and the light concentrating means may produce a predominantly parallel light beam, preferably divergent by less than about 2° or 3°, and said lens elements might be progressively different going outwardly for a generally concave array.
  • Such substantially wholly parallel light beam may simplify output lens requirements, as could first discussed position-focussing for substantially wholly forwardly directed light from such position, say a point or line.
  • Compound partly position focussed and partly otherwise directed light could facilitate use of existing output "glass" systems, i.e. as for tungsten lamp units.
  • Suitable geometries for the array of LEDs and the light concentrating means can have much less curvatures; indeed, be substantially flat in terms of substrate(s) or other carrier sheet(s) for the LEDs and for plural condensing lens elements, or as overall configuration of moulded multiple lens element means.
  • a substantially coplanar array of substantially identical plano-convex condensing lens elements will effectively have substantially coplanar foci in or near to which focal plane the array of LEDs can be positioned.
  • there is correspondence between sub-groups of the LEDs and individual condensing lens elements i.e. rather than one-one-one correspondence between LEDs and condensing lens elements (which is feasible but felt likely to be less advantageous than first preference for two or more LEDs per sub-group).
  • Engines and cabs will, of course, then need to be equipped with a light-sensitive sensing transducer and suitable demodulation means to produce drive signals for an audio loudspeaker (or head-phones) and/or a visual display, which provision can be of a quite simple and inexpensive nature.
  • Alternative fault detection etc strategies include normal first operation with part only of the totality of LEDs 212 lit up, say one of the groups 411 - 416 as a stand -by brought in after another of the groups 411 - 416, or other predetermined number of the LEDs 212, fails. Indeed, any possible LED positions not used in pursuit of multiples in and of groups/arms 411-416/421-426 could be used addit-ionally or alternatively for fault indication, say in said or another output "glass" part or addition for sideways or other viewing.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Eye Examination Apparatus (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Traffic Control Systems (AREA)

Claims (22)

  1. Feu de signalisation pour trafic ferroviaire comprenant une pluralité de diodes électroluminescentes (DEL) ( 212 ; 312 ; 512) largement suffisante pour produire une émission de lumière totale adaptée à l'usage prévu, un nombre au moins suffisant desdites DEL pouvant être activées en même temps de façon à être ainsi perceptibles, la pluralité de DEL étant déployée en une matrice aréolaire ( 211 ; 316X) en association avec des moyens de concentration de lumière émise similairement répartis de manière aréolaire ( 116 ; 216 ; 316) servant, en combinaison avec un dispositif de délivrance de rendement lumineux maximal ( 225'), à produire une lumière de sortie de direction essentiellement sensiblement parallèle, caractérisé par une lentille de rendement maximal ( 225') ayant une sous-lentille adjacente au bord ( 226 ; 326) permettant une visualisation latérale du fonctionnement du feu.
  2. Feu de signalisation selon la revendication 1, dans lequel la combinaison des DEL (212 ; 312 ; 512), des moyens de concentration de lumière (215 ; 316) et du dispositif de délivrance de rendement lumineux maximal (225') est telle que ladite direction sensiblement parallèle suppose moins de 5% environ de divergence par rapport à une direction strictement parallèle.
  3. Feu de signalisation selon la revendication 2, dans lequel ladite combinaison (212, 312, 512 ; 216, 316 ; 225') est telle que ladite divergence est inférieure à environ 2%.
  4. Feu de signalisation selon la revendication 1, 2 ou 3, comprenant au moins 40 DEL (212 ; 312 ; 512).
  5. Feu de signalisation selon la revendication 4, comprenant entre environ 50 et environ 80 DEL (212 ; 312 ; 512).
  6. Feu de signalisation selon une quelconque revendication précédente, comprenant des moyens (431-436) destinés à détecter une défaillance d'un nombre de DEL (212 ; 312 ; 512) inférieur à ce qui nuirait à l'obtention d'un nombre suffisant pour l'usage prévu.
  7. Feu de signalisation selon la revendication 6, comprenant des moyens (446) destinés à signaler ladite détection.
  8. Feu de signalisation selon une quelconque revendication précédente, dans lequel les DEL (212 ; 312) sont connectées en série à l'intérieur de groupes (411-416) connectés en parallèle et ayant chacun des DEL membres réparties de manière aréolaire sur ladite matrice (111 ; 211 ; 312).
  9. Feu de signalisation selon la revendication 8, dans lequel les groupes ( 411-416) peuvent être sélectionnés afin de permettre le remplacement pour activation d'un groupe ( 411-416) ayant une ou plusieurs DEL défaillantes par un autre des groupes ( 411-416).
  10. Feu de signalisation selon la revendication 8 ou la revendication 9, dans lequel des sous-groupes (312A-C) de DEL localement rapprochées ont leurs DEL intégrées dans plusieurs desdits groupes (411-416).
  11. Feu de signalisation selon une quelconque revendication précédente, dans lequel les moyens de concentration de lumière (215 ; 316) comprennent une matrice répartie de manière aréolaire de plusieurs éléments formant lentilles condensatrices (216 ; 316A-C) .
  12. Feu de signalisation selon la revendication 11, dans lequel au moins certains des éléments formant lentilles (316) sont en correspondance aréolaire avec des sous-groupes associés de deux DEL ou plus (312A-C) qui sont localement rapprochées.
  13. Feu de signalisation selon la revendication 12, dans lequel chacun desdits éléments formant lentilles est associé à une ou deux des DEL (312 ; 512, 512D).
  14. Feu de signalisation selon la revendication 12, dans lequel chacun desdits éléments formant lentilles (316) est associé à une, deux ou trois des DEL (312A-C).
  15. Feu de signalisation selon une quelconque revendication précédente, dans lequel la matrice de DEL présente une géométrie concave.
  16. Feu de signalisation selon l'une quelconque des revendications 11 à 15, dans lequel la matrice d'éléments formant lentilles présente une géométrie concave.
  17. Feu de signalisation selon une quelconque revendication précédente, dans lequel la matrice de DEL (212 ; 312) présente une géométrie plane.
  18. Feu de signalisation selon l'une quelconque des revendications 11 à 15 ou selon la revendication 17, dans lequel la matrice d'éléments formant lentilles (216 ; 316) présente une géométrie plane.
  19. Feu de signalisation selon une quelconque revendication précédente, comprenant des moyens (614) pour moduler le rendement lumineux en fonction d'informations intelligibles.
  20. Système de feu de signalisation comprenant un feu de signalisation selon la revendication 19 et des moyens de réception à bord (623) destinés à dériver lesdites informations.
  21. Système de signalisation selon la revendication 20, dans lequel le feu de signalisation comprend en outre des moyens de réception (635) coopérant, avec des moyens de transmission à bord supplémentaires (636) pour permettre une communication modulée supplémentaire d'informations intelligibles.
  22. Système de signalisation selon la revendication 21, dans lequel les moyens supplémentaires de réception et de transmission (637, 638) sont utilisés à des fins autres qu'une communication par modulation de lumière.
EP98940445A 1997-09-04 1998-09-01 Feux a plusieurs diodes electroluminescentes Expired - Lifetime EP1012023B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB9718643 1997-09-04
GBGB9718643.1A GB9718643D0 (en) 1997-09-04 1997-09-04 Plural-led lights
GB9722368 1997-10-24
GBGB9722368.9A GB9722368D0 (en) 1997-10-24 1997-10-24 Plural-LED lights
PCT/GB1998/002620 WO1999011498A1 (fr) 1997-09-04 1998-09-01 Feux a plusieurs diodes electroluminescentes

Publications (2)

Publication Number Publication Date
EP1012023A1 EP1012023A1 (fr) 2000-06-28
EP1012023B1 true EP1012023B1 (fr) 2003-04-09

Family

ID=26312167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98940445A Expired - Lifetime EP1012023B1 (fr) 1997-09-04 1998-09-01 Feux a plusieurs diodes electroluminescentes

Country Status (7)

Country Link
EP (1) EP1012023B1 (fr)
AT (1) ATE236821T1 (fr)
AU (1) AU8876998A (fr)
DE (1) DE69813255T2 (fr)
ES (1) ES2197498T3 (fr)
GB (1) GB2329011B (fr)
WO (1) WO1999011498A1 (fr)

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EP1110027A1 (fr) * 1999-07-02 2001-06-27 Lumileds Lighting B.V. Eclairage et feux de signalisation
TW457732B (en) 1999-08-27 2001-10-01 Lumileds Lighting Bv Luminaire, optical element and method of illuminating an object
AT410711B (de) * 1999-10-08 2003-07-25 Swarco Futurit Verkehrssignals Signalgeberoptik mit led-reihen
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DE10142582B4 (de) * 2001-08-31 2006-10-26 Signalbau Huber Gmbh Leuchtmittel-Signalelement, Lichtsignalvorrichtung und Lichtsignalsystem
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Also Published As

Publication number Publication date
DE69813255T2 (de) 2004-03-25
AU8876998A (en) 1999-03-22
GB2329011A (en) 1999-03-10
WO1999011498A1 (fr) 1999-03-11
EP1012023A1 (fr) 2000-06-28
GB2329011B (en) 2001-12-19
ES2197498T3 (es) 2004-01-01
GB9818801D0 (en) 1998-10-21
ATE236821T1 (de) 2003-04-15
DE69813255D1 (de) 2003-05-15

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