GB2495120B - Railway light signals - Google Patents

Railway light signals

Info

Publication number
GB2495120B
GB2495120B GB1116795.4A GB201116795A GB2495120B GB 2495120 B GB2495120 B GB 2495120B GB 201116795 A GB201116795 A GB 201116795A GB 2495120 B GB2495120 B GB 2495120B
Authority
GB
United Kingdom
Prior art keywords
light signals
railway light
railway
signals
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
GB1116795.4A
Other versions
GB201116795D0 (en
GB2495120A (en
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 GROUP PLC
Original Assignee
HOWELLS GROUP PLC
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 HOWELLS GROUP PLC filed Critical HOWELLS GROUP PLC
Priority to PCT/GB2011/051849 priority Critical patent/WO2013045867A1/en
Priority to GB1116795.4A priority patent/GB2495120B/en
Publication of GB201116795D0 publication Critical patent/GB201116795D0/en
Publication of GB2495120A publication Critical patent/GB2495120A/en
Application granted granted Critical
Publication of GB2495120B publication Critical patent/GB2495120B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • B61L5/1845—Optical systems, lenses
    • 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
    • B61L5/1854—Mounting and focussing of the light source in a lamp, fixing means
    • 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
    • B61L5/1881—Wiring diagrams for power supply, control or testing
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
    • 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]

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Train Traffic Observation, Control, And Security (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB1116795.4A 2011-09-29 2011-09-29 Railway light signals Active GB2495120B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/GB2011/051849 WO2013045867A1 (en) 2011-09-29 2011-09-29 Railway light signals
GB1116795.4A GB2495120B (en) 2011-09-29 2011-09-29 Railway light signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1116795.4A GB2495120B (en) 2011-09-29 2011-09-29 Railway light signals

Publications (3)

Publication Number Publication Date
GB201116795D0 GB201116795D0 (en) 2011-11-09
GB2495120A GB2495120A (en) 2013-04-03
GB2495120B true GB2495120B (en) 2015-11-18

Family

ID=44994184

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1116795.4A Active GB2495120B (en) 2011-09-29 2011-09-29 Railway light signals

Country Status (2)

Country Link
GB (1) GB2495120B (en)
WO (1) WO2013045867A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9629219B1 (en) 2016-01-28 2017-04-18 GE Lighting Solutions, LLC Methods and apparatus of incandescent bulb emulator
US11077872B2 (en) 2018-06-18 2021-08-03 Siemens Mobility, Inc. Signal light assembly
GB2625522A (en) * 2022-12-15 2024-06-26 Robert Pearson Stephen Traffic signals halogen to LED conversion system

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2371689A (en) * 2001-03-10 2002-07-31 Siemens Plc Modifying current waveform and detecting failure in non-incandescent lighting system
EP1233654A1 (en) * 2001-01-19 2002-08-21 Siemens Aktiengesellschaft Circuit and method for adapting the characteristic curve of an LED
GB2383180A (en) * 2001-12-11 2003-06-18 Westinghouse Brake & Signal LED signal lamp and apparatus
US20050122719A1 (en) * 2003-12-05 2005-06-09 Siemens Ag Light signal
EP2076095A2 (en) * 2007-12-31 2009-07-01 Lumination LLC Tricolor LED traffic signal
EP2113712A1 (en) * 2008-04-30 2009-11-04 Siemens Aktiengesellschaft Light signal
EP2113439A2 (en) * 2008-04-30 2009-11-04 Siemens Aktiengesellschaft Light signal
EP2163455A2 (en) * 2008-09-15 2010-03-17 Siemens Aktiengesellschaft Light signal

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1787886B1 (en) * 2005-11-18 2008-01-02 ALCATEL Transport Solution Deutschland GmbH Electrical circuit for an LED signal lamp with a switching threshold for switching between a daylight operation mode and a nighttime operation mode

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1233654A1 (en) * 2001-01-19 2002-08-21 Siemens Aktiengesellschaft Circuit and method for adapting the characteristic curve of an LED
GB2371689A (en) * 2001-03-10 2002-07-31 Siemens Plc Modifying current waveform and detecting failure in non-incandescent lighting system
GB2383180A (en) * 2001-12-11 2003-06-18 Westinghouse Brake & Signal LED signal lamp and apparatus
GB2408834A (en) * 2001-12-11 2005-06-08 Westinghouse Brake & Signal LED Signal Lamp Circuit
US20050122719A1 (en) * 2003-12-05 2005-06-09 Siemens Ag Light signal
EP2076095A2 (en) * 2007-12-31 2009-07-01 Lumination LLC Tricolor LED traffic signal
EP2113712A1 (en) * 2008-04-30 2009-11-04 Siemens Aktiengesellschaft Light signal
EP2113439A2 (en) * 2008-04-30 2009-11-04 Siemens Aktiengesellschaft Light signal
EP2163455A2 (en) * 2008-09-15 2010-03-17 Siemens Aktiengesellschaft Light signal

Also Published As

Publication number Publication date
GB201116795D0 (en) 2011-11-09
WO2013045867A1 (en) 2013-04-04
GB2495120A (en) 2013-04-03

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