EP0801369B1 - Indicateur optique pour une installation de signalisation routière - Google Patents

Indicateur optique pour une installation de signalisation routière Download PDF

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Publication number
EP0801369B1
EP0801369B1 EP19970101305 EP97101305A EP0801369B1 EP 0801369 B1 EP0801369 B1 EP 0801369B1 EP 19970101305 EP19970101305 EP 19970101305 EP 97101305 A EP97101305 A EP 97101305A EP 0801369 B1 EP0801369 B1 EP 0801369B1
Authority
EP
European Patent Office
Prior art keywords
reflector
signal module
light
module according
area
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
EP19970101305
Other languages
German (de)
English (en)
Other versions
EP0801369A1 (fr
Inventor
Christian Liéter
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.)
Signalbau Huber GmbH
Original Assignee
HUBER SIGNALBAU AG
Signalbau Huber 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
Priority claimed from DE19627940A external-priority patent/DE19627940A1/de
Application filed by HUBER SIGNALBAU AG, Signalbau Huber AG filed Critical HUBER SIGNALBAU AG
Publication of EP0801369A1 publication Critical patent/EP0801369A1/fr
Application granted granted Critical
Publication of EP0801369B1 publication Critical patent/EP0801369B1/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
    • 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

Definitions

  • the invention relates to an optical signal generator for Traffic signal systems, according to the preamble of claim 1.
  • Such an optical signal generator is by GB-PS 1 140 417 known.
  • This optical signal transmitter has one Reflector, multiple light sources and a translucent Cover plate on.
  • Such optical signal transmitters must a prescribed illuminance distribution or Generate light distribution so that the emitted by them Beam of light is visible from given directions.
  • Traffic signal systems such as traffic lights, must be that emitted by the optical signal transmitter Beams of light, especially from diagonally below and from the side Directions to be visible.
  • the reflector is usually in Formed a paraboloid of revolution, so that by light emitted by the light source as one parallel light beam is reflected.
  • the cover plate must have optical elements through which the Reflector reflected light bundle is deflected in such a way that the prescribed illuminance distribution produces becomes.
  • the respective operating conditions demand different illuminance distributions that in corresponding standards are defined.
  • the different Illuminance distributions are different Cover plates generated.
  • the cover plate often different symbols such as Represent directional arrows, which causes a large number different versions for the cover plate results.
  • U.S. Patent 4,962,450 describes an optical signal transmitter, which is a fall of the low sun even in light does not appear illuminated.
  • the optical signal transmitter according to the invention with the features according to claim 1 has the advantage that already the light beam reflected by the reflector essentially the respectively prescribed illuminance distribution generated and thus the cover plate can be simple can and the manufacture of the signal generator is simplified. It is also possible to use the large number of different To reduce design variants of cover plates, since yes already essentially through that reflected by the reflector Light generates the respective illuminance distribution becomes.
  • FIG. 1 shows an optical one Signal generator in a vertical longitudinal section
  • Figure 2 a Reflector of the signal generator according to a first Embodiment in a front view
  • Figure 3 a arranged in front of the signal transmitter, the screen light bundle reflected by the reflector is illuminated
  • Figure 4 shows the measuring screen when illuminated by the Beam of light emerging
  • FIG. 5 the reflector according to a second embodiment in one Front view
  • Figure 6 shows the reflector in a vertical Longitudinal section along line VI-VI in Figure 5
  • Figure 7 den Reflector according to a third embodiment in one Front view
  • Figure 8 shows the reflector according to the third Embodiment in a modified version in a front view.
  • FIGS. 1, 2 and 5 to 8 Signal generator An optical one shown in FIGS. 1, 2 and 5 to 8 Signal generator is for use in traffic signal systems, such as traffic lights.
  • the Signal generator has a reflector 10, in which at least a light source 12 is used, for example a Light bulb can be.
  • the reflector 10 can be made of metal or Plastic.
  • the optical axis of the reflector 10 is designated 11.
  • the signal generator also has one in the beam path of that reflected by the reflector 10 Translucent cover plate 14 arranged in a light beam on the light exit opening of the signal generator closes and in the required signal color of the Signal generator can be colored.
  • the cover plate 14 can consist of glass or plastic.
  • the reflector 10 of the signal generator according to a first embodiment shown.
  • the reflector 10 has a concave curved reflection surface, in which in Figure 2 shows several lines 16 of the same height.
  • the contour lines 16 run in planes perpendicular to the optical axis 11 of the reflector 10.
  • Figure 3 is a with Distance in front of the signal generator approximately coaxial to its optical Axis 11 arranged measuring screen 20 shown by the light beam reflected by the reflector 10 illuminates becomes.
  • the central plane of the measuring screen 20 is labeled HH and the vertical of which contains the optical axis 11
  • the middle level is labeled VV.
  • the measuring screen 20 will by the light beam reflected by the reflector 10 in one illuminated with 22 designated area.
  • area 22 In area 22 are several lines 24 of the same illuminance, so-called Isocandela and Isolux lines entered.
  • the focus area 22 is below the horizontal median plane HH of the measuring screen 20 arranged and the area is at least approximately symmetrical on both sides of the vertical Middle plane VV arranged.
  • the area 22 is up by a line 26 approximately in the form of an inverted U limited, at least approximately in the vertical Middle plane VV has its highest point and with increasing distance from the vertical median plane VV runs below.
  • the area 22 is down through one Line 28 bounded, which is at least approximately straight or also runs in the shape of an inverted U.
  • the Area 22 widens down to its lower boundary line 28.
  • the maximum illuminance in area 22 is near the intersection HV of the horizontal Middle plane HH and the vertical middle plane VV or something available below the point HV.
  • the isocandelal lines 24 run at least approximately like lines 26.28.
  • the reflective surface of the reflector 10 can be as in FIG FIG. 3, of which the reflector 10 reflected light bundle to be generated predetermined Illuminance distribution can be calculated step by step. This is based on the optical Laws of reflection for small areas of the reflector 10 the shape is determined and gradually successive sections determined so that results in a continuous reflection surface. To the The distance of the apex 13 arranged on the optical axis 11 of the reflector 10 from the luminous element of the light source 12 be specified.
  • the Reflector shape gradually calculated by for each Area of the reflector 10 from the direction of this from reflective light via geometric reflection laws, Impact angle ⁇ of the emitted by the light source 12 Light rays with respect to the normal N on the concerned Reflector area equal to the angle of reflection ⁇ , the orientation of the Normal N determined for the relevant reflector area becomes.
  • the orientation of the normal N becomes vertical to this arranged tangential plane T on the relevant one Reflector area and thus its orientation determined.
  • the Sequence of the so determined one after the other Reflector areas gives a continuous Reflective surface.
  • the reflector 10 can in its optical Longitudinal sections containing axis 11 intersection curves have approximately parabolas. In cuts
  • the reflector 10 can be perpendicular to its optical axis 11 Have intersection curves that are approximately ellipses, the large semi-axes of which are arranged approximately horizontally are.
  • the measuring screen 20 will illuminated in an area 32, the focus of which is below the horizontal center plane is HH and about symmetrical on both sides of the vertical median plane vv is arranged.
  • the area 32 is approximately trapezoidal trained and widened downwards. In the area 32 several isocandelal lines 34 are entered.
  • An exemplary embodiment of the signal generator is its reflector 10 trained as above. To make it even more uniform Luminance on the light field of the signal generator too can reach on the reflection surface of the reflector 10 elements causing a scattering of the reflected light be provided.
  • the grooves 40 can for example as concave depressions in the Reflection surface of the reflector 10 may be formed. Alternatively, the grooves 40 can also be used as convex elevations be formed in the reflection surface.
  • the scores 40 can be ring-shaped at least approximately coaxial to the optical Axis 11 may be arranged extending.
  • the grooves 40 Through the grooves 40 is a scattering of the reflected on the reflection surface Light causes a uniform luminance the light field of the signal generator can be reached.
  • the width of the grooves 40 can be over the entire Reflecting surface to be constant or variable.
  • the grooves 40 are formed such that the caused by this scattering of the reflected light starting from the apex region 13 of the reflector 10 increasing distance from this to the light exit direction pointing front edge of the reflector 10 decreases. In this way it can be achieved that both a sufficient Illuminance near the optical axis 11 is present as well as a uniform luminance on the luminous field of the signal generator around the optical axis 11.
  • the reflector 10 of the signal generator is in one Front view according to a third embodiment shown, the reflector 10 in principle as in is formed first embodiment, the Reflection surface, however, a plurality of facets 50 are superimposed.
  • the individual facets 50 can be essentially flat or convex or concave be curved. Due to the facets 50 one Scattering of the light reflected on the reflection surface causes, making the luminance of the Illuminated field of the signal generator can be reached.
  • the Facets 50 can, for example, as shown in FIG. 7 be arranged in a matrix and approximately rectangular be trained. Those arranged in rows one above the other Facets 50 can each be in the ones below Rows of facets 50 may be staggered.
  • the effect of the facets 50 can be such that the through this caused scattering of the reflected light starting from from the apex region 13 of the reflector 10 with increasing Distance from this to the one pointing in the direction of light exit Front edge of the reflector 10 decreases.
  • FIG. 8 shows a modification compared to FIG. 7 Execution of the reflector 10 shown, the Arrangement of the facets 52 is changed. There are several facets 52 offset from each other in radial Arranged with respect to the optical axis 11. In the adjacent radial rows of facets 52 are each offset from one another. The Facets 52 are each segment of a circle educated. The facets 52 can form the figure as above 7 indicated with regard to their training and impact be executed.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Traffic Control Systems (AREA)
  • Optical Communication System (AREA)

Claims (10)

  1. Générateur optique de signaux pour des installations de signalisation de trafic, comportant un réflecteur (10), au moins une source de lumière (12) et un verre de recouvrement transparent (14), qui est disposé dans le trajet du rayonnement du faisceau de lumière réfléchi par le réflecteur (10), caractérisé en ce que le réflecteur (10) est agencé de telle sorte qu'il réfléchit la lumière émise par la au moins une source de lumière (12) sous la forme d'un faisceau de lumière, qui, sans le verre de recouvrement (14), éclaire un écran de mesure (20), qui est disposé en avant du générateur de signaux approximativement coaxialement à l'axe optique (11) de ce dernier, dans une zone (22), dont le barycentre est situé au-dessous d'un plan horizontal (HH) contenant l'axe optique (11) et qui s'élargit vers le bas et s'étend au moins approximativement symétriquement des deux côtés d'un plan vertical (VV) contenant l'axe optique (11).
  2. Générateur de signaux selon la revendication 1, caractérisé en ce que la zone (22) s'élargit jusqu'à une ligne limite inférieure (28).
  3. Générateur de signaux selon la revendication 1 ou 2, caractérisé en ce que la zone (22), qui est éclairée sur l'écran de mesure (20) par le faisceau de lumière réfléchi par le réflecteur (10), est limitée vers le haut par une ligne (26) au moins approximativement en forme de U renversé.
  4. Générateur de signaux selon l'une des revendications précédentes, caractérisé en ce qu'à la surface réfléchissante du réflecteur (10) est superposée une multiplicité d'éléments (40; 50; 52), qui réalisent une dispersion de la lumière réfléchie.
  5. Générateur de signaux selon la revendication 4, caractérisé en ce que les éléments diffusant la lumière sont agencés sous la forme de cannelures (40) décalées les unes par rapport aux autres.
  6. Générateur de signaux selon la revendication 5, caractérisé en ce que les cannelures (40) s'étendent au moins approximativement coaxialement avec une forme annulaire autour de l'axe optique (11) du réflecteur (10).
  7. Générateur de signaux selon la revendication 4, caractérisé en ce que les éléments diffusant la lumière sont agencés sous la forme de facettes (50, 52).
  8. Générateur de signaux selon la revendication 7, caractérisé en ce que les facettes (50) sont disposées selon une disposition matricielle sur le réflecteur (10).
  9. Générateur de signaux selon la revendication 7, caractérisé en ce que respectivement plusieurs facettes (52) sont disposées en étant décalées les unes par rapport aux autres, dans une direction radiale par rapport à l'axe optique (11).
  10. Générateur de signaux selon la revendication 7, caractérisé en ce que les facettes (52) sont agencées sous la forme de segments de cercles.
EP19970101305 1996-04-12 1997-01-29 Indicateur optique pour une installation de signalisation routière Expired - Lifetime EP0801369B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19614402 1996-04-12
DE19614402 1996-04-12
DE19627940A DE19627940A1 (de) 1996-04-12 1996-07-11 Optischer Signalgeber für Verkehrssignalanlagen
DE19627940 1996-07-11

Publications (2)

Publication Number Publication Date
EP0801369A1 EP0801369A1 (fr) 1997-10-15
EP0801369B1 true EP0801369B1 (fr) 2001-07-25

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ID=26024664

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19970101305 Expired - Lifetime EP0801369B1 (fr) 1996-04-12 1997-01-29 Indicateur optique pour une installation de signalisation routière

Country Status (2)

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EP (1) EP0801369B1 (fr)
CN (1) CN1168517A (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6729746B2 (en) 2000-03-14 2004-05-04 Toyoda Gosei Co., Ltd. Light source device
ITFI20120022A1 (it) * 2012-02-10 2013-08-11 Iguzzini Illuminazione Riflettore per apparecchi di illuminazione ad illuminazione omogenea.
CN107676733A (zh) * 2017-11-03 2018-02-09 华定谟 远光灯

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1738426A (en) * 1928-03-10 1929-12-03 Sunshine Inc Light reflector
US3379869A (en) 1966-03-23 1968-04-23 Corning Glass Works Variable intensity lamp
NL179089C (nl) * 1975-04-18 1986-07-01 Philips Nv Reflektor met langwerpige lichtbron.
US4021659A (en) * 1975-10-30 1977-05-03 General Electric Company Projector lamp reflector
GB2013323B (en) * 1978-01-28 1982-05-06 Plessey Co Ltd Illumination apparatus
EP0299091A4 (en) * 1987-01-19 1990-12-12 N Proizv Avtoelekt Avtotrakt Light-signalling device

Also Published As

Publication number Publication date
CN1168517A (zh) 1997-12-24
EP0801369A1 (fr) 1997-10-15

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