EP2199178A1 - Affichage de signal - Google Patents

Affichage de signal Download PDF

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Publication number
EP2199178A1
EP2199178A1 EP08021960A EP08021960A EP2199178A1 EP 2199178 A1 EP2199178 A1 EP 2199178A1 EP 08021960 A EP08021960 A EP 08021960A EP 08021960 A EP08021960 A EP 08021960A EP 2199178 A1 EP2199178 A1 EP 2199178A1
Authority
EP
European Patent Office
Prior art keywords
display elements
signal
display
signal pattern
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.)
Withdrawn
Application number
EP08021960A
Other languages
German (de)
English (en)
Inventor
Thomas Ludmann
Thomas Gebert
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.)
Thales Deutschland GmbH
Original Assignee
Thales Deutschland Holding GmbH
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 Thales Deutschland Holding GmbH filed Critical Thales Deutschland Holding GmbH
Priority to EP08021960A priority Critical patent/EP2199178A1/fr
Publication of EP2199178A1 publication Critical patent/EP2199178A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B61L5/1836—Daylight signals using light sources of different colours and separate optical systems
    • 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

Definitions

  • the invention relates to a signal display, in particular a railway signal, comprising a plurality of first display elements which are arranged in the form of a valid signal pattern and are able to generate a reflex phantom, wherein light of one or more light sources is emitted via the first display elements to the outside in order to display the valid signal pattern.
  • Fig. 3 shows an example of a railway signal 101 according to prior art.
  • the railway signal 101 comprises a plurality of display elements 102 (e.g. lenses or reflectors) which are arranged in the form of a valid signal pattern 103, here shown as a "right angle" pattern.
  • a light source 104 By activating a light source 104 inside the housing 105 of the railway signal 101, the light of the light source 104 is emitted via the display elements 102 to the outside in order to display or illuminate the valid signal pattern 103.
  • the surfaces of the display elements 102 can also reflect light incident from the outside, incidence and reflection of outside light can be erroneously perceived by an viewer (e. g. engine driver) as a displayed signal pattern, which is called a "reflex phantom".
  • a valid signal pattern can be seen as being illuminated although it is not activated.
  • the generation of a valid signal pattern due to a reflex phantom must be prevented.
  • railway signals are provided with special shields or coverings which partially prevent this problem but can not completely eliminate it. For this reason, railway signals with shields are only used if a reflex phantom is devaluating for the railway signal. In the case of a reflex phantom the displayed signal pattern is devaluating and therefore safe.
  • a plurality of second display elements in any form, wherein no light is emitted via the second display elements to the outside and wherein the second display elements are arranged to form another signal pattern (e. g. an invalid or devaluating signal pattern) together with the first display elements.
  • another signal pattern e. g. an invalid or devaluating signal pattern
  • a reflex phantom in the case of a reflex phantom all or parts of the display elements are seen as being illuminated whereby another signal pattern is perceived by a viewer.
  • the valid signal pattern in the case of a reflex phantom the valid signal pattern is changed and made unrecognizable to the viewer.
  • a valid signal pattern caused by a reflex phantom is eliminated.
  • both devaluating and revaluating signal patterns can be displayed in a simple and safe manner.
  • the invention can be used for all signal displays, such as railway signals, outside displays and supplementary indicators.
  • the railway signal 1 shown in Fig. 1 comprises a plurality of first display elements 2 which are arranged in the form of a valid signal pattern 3 here shown as a "right angle" pattern. Any geometric form for the valid signal pattern 3 is possible, e. g. letters, numbers, forms.
  • the railway signal 1 further comprises a plurality of second display elements 4 which, in the embodiment shown, are identical to the first display elements 2 and are arranged to form another signal pattern 5 together with the first display elements 2.
  • the other (e. g. invalid) signal pattern 5 formed by the first and the second display elements 2, 4 is a square.
  • the first and the second display elements 2, 4 are, for example, lenses, transparent light disks or reflectors.
  • the light of the light source 6 is emitted only via the first display elements 2 to the outside in order to display or illuminate the valid signal pattern 3 as shown in Fig. 1 .
  • the second display elements 4 are separated from the light source 6 and, therefore, no light is emitted via the second display elements 4 to the outside.
  • a reflex phantom As shown in Fig. 2 , in the case of a reflex phantom all display elements 2, 4 are seen as being illuminated, whereby the invalid square signal pattern 5 is perceived by an viewer (e. g. engine driver). This invalid signal pattern 5 can not be interpreted or interpreted as erroneous by the viewer (e. g. engine driver) and, therefore, results in no action being taken by the viewer (e. g. engine driver). In other words, in the case of a reflex phantom the valid signal pattern 3 is made unrecognizable to the viewer (e. g. engine driver).
  • the complete signal area 8 of the railway signal 1 is provided with the first and the second display elements 2, 5.
  • a plurality of light sources can be provided in the housing 7, wherein each light source can be associated with one of the first display elements 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP08021960A 2008-12-18 2008-12-18 Affichage de signal Withdrawn EP2199178A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08021960A EP2199178A1 (fr) 2008-12-18 2008-12-18 Affichage de signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08021960A EP2199178A1 (fr) 2008-12-18 2008-12-18 Affichage de signal

Publications (1)

Publication Number Publication Date
EP2199178A1 true EP2199178A1 (fr) 2010-06-23

Family

ID=40532619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08021960A Withdrawn EP2199178A1 (fr) 2008-12-18 2008-12-18 Affichage de signal

Country Status (1)

Country Link
EP (1) EP2199178A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB725509A (en) * 1953-08-06 1955-03-02 Westinghouse Brake & Signal Improvements relating to optical projection apparatus
DE2941634A1 (de) 1978-10-17 1980-04-30 Stanley Electric Co Ltd Farbiges licht emittierende anzeigeeinrichtung
US4298869A (en) * 1978-06-29 1981-11-03 Zaidan Hojin Handotai Kenkyu Shinkokai Light-emitting diode display
EP1043189A2 (fr) * 1999-04-06 2000-10-11 911 Emergency Products, Inc. Remplacement d'un assemblage de LED et modulation de l'intensité de la source lumineuse

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB725509A (en) * 1953-08-06 1955-03-02 Westinghouse Brake & Signal Improvements relating to optical projection apparatus
US4298869A (en) * 1978-06-29 1981-11-03 Zaidan Hojin Handotai Kenkyu Shinkokai Light-emitting diode display
DE2941634A1 (de) 1978-10-17 1980-04-30 Stanley Electric Co Ltd Farbiges licht emittierende anzeigeeinrichtung
EP1043189A2 (fr) * 1999-04-06 2000-10-11 911 Emergency Products, Inc. Remplacement d'un assemblage de LED et modulation de l'intensité de la source lumineuse

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