US3273115A - Traffic light system - Google Patents

Traffic light system Download PDF

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Publication number
US3273115A
US3273115A US528907A US52890766A US3273115A US 3273115 A US3273115 A US 3273115A US 528907 A US528907 A US 528907A US 52890766 A US52890766 A US 52890766A US 3273115 A US3273115 A US 3273115A
Authority
US
United States
Prior art keywords
lights
strip
trench
light
carriageway
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
US528907A
Other languages
English (en)
Inventor
Lafon Paul
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.)
Compagnie des Freins et Signaux Westinghouse SA
Original Assignee
Compagnie des Freins et Signaux Westinghouse SA
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 FR35504A external-priority patent/FR90957E/fr
Application filed by Compagnie des Freins et Signaux Westinghouse SA filed Critical Compagnie des Freins et Signaux Westinghouse SA
Application granted granted Critical
Publication of US3273115A publication Critical patent/US3273115A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/576—Traffic lines
    • E01F9/582—Traffic lines illuminated
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
    • E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
    • E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
    • E01F9/553—Low discrete bodies, e.g. marking blocks, studs or flexible vehicle-striking members
    • E01F9/559—Low discrete bodies, e.g. marking blocks, studs or flexible vehicle-striking members illuminated

Definitions

  • the invention has tor an object, a road traffic light indicator system which is easily visible to pedestrians and is always visible to drivers of vehicles who do not need to direct their attention away from the carriageway on which they are driving.
  • the invention consists in a road traflic light indicator system wherein a translucent strip is arranged in the carriageway at right angles thereto and is illuminated by means of coloured lights which are similar to traflic lights and which light up automatically by means which are conventional in the art of road trafiic light indications according to traffic requirements, the light strip being synchronised if desired with conventional road traffic light systems.
  • the strip is constituted by translucent tiles which are placed over a trench containing the traffic lights which illuminate the strip from below.
  • the lights are in the form of light tubes carried by movable carriages, a lateral trench continuing or extending the light trench and enabling the carriages to be removed for maintenance work and also containing the trans-formers supplying current to the system and the indication control arrangement which may be manually or automatically operated.
  • FIG. 1 is a view in vertical section of a system according to the invention
  • FIGURE 2 is a plan view of the system shown in FIG- URE 1,
  • FIGURE 3 is a section along the lines III-III of FIG- URE 1, shown to a larger scale, and
  • FIGURE 4 is a view similar to that of FIGURE 1 but on a larger scale to illustrate a coupling for the two carriages.
  • a road traflic light system that comprises a translucent strip I mounted in the surface of the carriageway and at right angles thereto and composed of tiles 2 made of rough sand-cast glass.
  • light tubes 6 are located within the casing 3 within the casing 3 within the casing 3 . These tubes are grouped in threes, the three tube-s being of different colours, viz. red, amber and green, as laid down in most highway regulations, and mounted parallel on a carriage 7 comprising a frame 8 mounted on two wheels 9, the tubes being carried on the frame by means of supports 10, each of which has, in its upper portion, three semicylindrical seatings 10a in which are mounted the tubes 6.
  • the casing 3 may, for instance, be of small dimensions such as mm. in width and 250 mm. in depth, this depth being less towards the edges of the carriageway when the latter is slightly curved; the base of the casing is also slightly domed in order to allow water which has penetrated or condensed in the casing to flow oil and be removed.
  • a number of carriages is arranged in series in the easing and these carriages are coupled together by mechanical means such as a flexible coupling 11 and by electrical means such as conductors 12 which connect in series the tubes of the same colour, the conductors 12 having terminals 12a which are easily releasable and are screwed on to base 6a of the tubes, through which they receive current.
  • a trench '13 extends the casing 3 so that the carriages 7 may be successively removed.
  • This trench 1-3 is hollowed out of the pavement T or the side of the carriageway and comprises an enlarged portion 14 in which are located three transformers 15 which supply current to a series of like colour tubes and which are each connected to a high voltage discharge tube on the first carriage and to a tube on the second carriage by means of cables 16 which pass through a pipe 17 embedded in the concrete casing 3.
  • the trench 13 also comprises a ventilating grid 18 and an outlet 19 for the water produced by condensation within the casing 3 and the trench 13.
  • the tubes 6 have been developed to ensure that the colours obtained are clearly distinguishable.
  • the red colour for example, is obtained using a conventional neon strip and a wall of the tube as a filter to prevent penetration of the amber coloured rays of the neon spectrum, while in order to obtain the amber colour, the yellow wall of the tube absorbs the red part of the emitted spectrum which is selected to be centred on orange.
  • green is obtained by the emission of a relative amount of zinc oxide, for example, which produce-s a spectrum which is clearly distinguishable from the other two.
  • These tubes which are supplied with current in a conventional manner through the transformers 15 which are provided with a magnetic current limiting device, are controlled at their primary side by manually or automatically operated devices provided with relay means similar to that conventionally employed in known road trafiic signal systems using lights.
  • the control means may be located in the enlarged portion of the trench 14 or adjacent the control boxes for existing traflic lights.
  • a road tratfic light system comprising a translucent strip, means for mounting said strip in a carriageway at right angles thereto, a plurality of coloured lights, means for mounting said lights beneath said strip, and automatically operable control means for energising said lights cyclically in dependance upon trafiic requirements.
  • a system according to claim 1, comprising in addition, conventional side track or overhead mounted traffic lights and means for synchronising said lights beneath said strip with said conventional traflic' lights.
  • said lights are in the form of light tubes carried by movable carriages which are provided With means for coupling them electrically and mechanically.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Signs Or Road Markings (AREA)
US528907A 1965-02-23 1966-02-21 Traffic light system Expired - Lifetime US3273115A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR6607A FR1458124A (fr) 1965-02-23 1965-02-23 Dispositif de signalisation routière lumineuse
FR35504A FR90957E (fr) 1965-10-19 1965-10-19 Dispositif de signalisation routière lumineuse

Publications (1)

Publication Number Publication Date
US3273115A true US3273115A (en) 1966-09-13

Family

ID=26162203

Family Applications (1)

Application Number Title Priority Date Filing Date
US528907A Expired - Lifetime US3273115A (en) 1965-02-23 1966-02-21 Traffic light system

Country Status (6)

Country Link
US (1) US3273115A (de)
BE (2) BE676819A (de)
CH (1) CH437060A (de)
FR (1) FR1458124A (de)
GB (1) GB1089504A (de)
NL (1) NL6602032A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6259375B1 (en) 2000-03-09 2001-07-10 Roger J. Andras Highway warning system

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2745308B1 (fr) * 1996-02-28 2000-02-25 Vezon Paul Dispositif lumineux de signalisation routiere

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6259375B1 (en) 2000-03-09 2001-07-10 Roger J. Andras Highway warning system

Also Published As

Publication number Publication date
BE688329A (de) 1967-04-17
GB1089504A (en) 1967-11-01
BE676819A (de) 1966-08-22
FR1458124A (fr) 1966-03-04
CH437060A (fr) 1967-05-31
NL6602032A (de) 1966-08-24

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