EP2927890B1 - Émetteur d'un signal lumineux - Google Patents

Émetteur d'un signal lumineux Download PDF

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Publication number
EP2927890B1
EP2927890B1 EP15158840.7A EP15158840A EP2927890B1 EP 2927890 B1 EP2927890 B1 EP 2927890B1 EP 15158840 A EP15158840 A EP 15158840A EP 2927890 B1 EP2927890 B1 EP 2927890B1
Authority
EP
European Patent Office
Prior art keywords
fresnel lens
signal transmitter
inner housing
front opening
edge region
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
EP15158840.7A
Other languages
German (de)
English (en)
Other versions
EP2927890A3 (fr
EP2927890A2 (fr
Inventor
Friedrich Fischer
Heiko Junker
Birger Langhammer
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.)
Siemens AG
Original Assignee
Siemens 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
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2927890A2 publication Critical patent/EP2927890A2/fr
Publication of EP2927890A3 publication Critical patent/EP2927890A3/fr
Application granted granted Critical
Publication of EP2927890B1 publication Critical patent/EP2927890B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/006—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate being distinct from the light source holder
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/504—Cooling arrangements characterised by the adaptation for cooling of specific components of refractors
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21V5/045—Refractors for light sources of lens shape the lens having discontinuous faces, e.g. Fresnel lenses
    • 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a signal generator for emitting a light signal for road or rail traffic according to the preamble of claim 1.
  • traffic signal systems For traffic control on traffic routes, the use of traffic signal systems is known which have signal transmitters for emitting light signals.
  • traffic light systems primarily serve to control road traffic at inner-city hubs.
  • signalers are arranged in three vertically juxtaposed fields and hung on the approaching road users aligned on poles.
  • Such dreifeldige signal generator are alternately releasing and blocking signals to the vehicle traffic after a running in a control unit signal plan.
  • Such a signal generator comprises a cup-shaped plastic inner housing with a front opening.
  • a light source with at least one light emitting diode and a driver assembly for powering the light source are arranged.
  • the front opening is closed by an optical attachment for influencing the light emitted by the light source.
  • the optical attachment has an inner Fresnel lens and an outer lens.
  • the Fresnel lens has, in an optically active region, a series of annular steps, in the passage of which light emitted by the point light source is concentrated.
  • the downstream in the optical path lens has honeycomb, spider web or prism pattern, which ensures a uniform distribution of light on the lens.
  • Symbol masks may be arranged in the space between Fresnel lens and diffuser if the signal image represented by the signal generator contains a symbol, such as a directional arrow or a character, such as pedestrians, cyclists, tram or the like.
  • Signaling devices for traffic engineering have to comply with certain standards with regard to the optical values, for example light intensity distribution, emission characteristics and luminance in accordance with EN 12368 or DIN 67527-1, and with respect to electrical values, for example operating voltage and power consumption according to DIN VDE 0832. Due to their installation at locations with different climatic conditions, the signalers require error-free operation at working temperatures from -40 ° C to +60 ° C. Furthermore, signal generators according to DIN EN 12368 must at least comply with protection class IP65: the inner housing closed by the optical attachment must therefore be dustproof with respect to protection against foreign bodies; it must be protected against jet water (nozzle) from any angle and complete contact protection from electrical voltage Offer components.
  • the invention is therefore based on the object to provide a signal generator of the type mentioned, in which the use of costly components with increased operating temperatures is avoided, but which can still be reliable in operation over a long service life.
  • the signal generator for emitting a light signal for road or rail transport comprises a cup-shaped inner housing with a front opening.
  • a light source with at least one light emitting diode and a driver assembly for powering the light source are arranged in the inner housing.
  • the front opening is closed by an optical attachment for influencing the light emitted by the light source.
  • the optical attachment has an inner Fresnel lens and an outer lens.
  • the Fresnel lens has air channels which connect an inner space enclosed by the inner housing and the Fresnel lens to a space enclosed by the Fresnel lens and the diffuser.
  • the Fresnel lens has an optically active central region and an edge region which surrounds the latter in the form of a circular ring, the air channels extending in the edge region.
  • the air channels are arranged in the edge region of the Fresnel lens, a disturbance of the emitted signal image is minimized.
  • the Fresnel lens has in its edge region an annular approach facing the interior, through which the air ducts extend in the radial direction from an inner lateral surface to an outer lateral surface of the neck.
  • the air ducts are distributed over the edge region at a regular pitch circle distance.
  • a uniform distribution of the ventilation channels over the edge region of the Fresnel lens offers the heated air at a plurality of spaced-apart locations the opportunity to flow from the interior into the intermediate space in order to ensure good heat dissipation.
  • twelve air ducts can be arranged at angular intervals of 30 ° to each other. If the Fresnel lens is made as an injection molded part, leave the air ducts easily incorporate into the Fresnel lens.
  • the inner housing has a bottom wall opposite the front opening and this side wall connecting to the front opening at the edge, wherein the bottom wall and side walls are lined inside at least partially by a cooling plate.
  • the heat sink has a large heat capacity and can - in comparison to the heat dissipation through the air ducts as an additional or even as a major measure - absorb heat from the heated air of the interior, distribute and dissipate through floor and side walls to the environment.
  • An inventive signal generator 1 comprises according to FIG. 4 an outer housing 2, the front side of a housing door 3 is closed.
  • the housing door 3 may be articulated on the outer housing 2 via pivot bearings arranged at the side.
  • With the housing door 3 is a pot-shaped or trough-shaped inner housing 5 is connected via a profile seal 4 with a front opening 6, which projects into the outer housing 2.
  • With reference also to FIG. 1 is the front opening 6 through an optical attachment 7, which also engages in the profile seal 4, sealed.
  • the optical attachment 7 has an inside Fresnel lens 8 and an outside diffuser 9 on.
  • a symbol mask 10 here for example a pedestrian symbol, can be arranged.
  • the at least one light-emitting diode 11 is arranged on a bottom wall 12 of the inner housing 5.
  • a driver assembly 13 for powering the at least one light-emitting diode 11 is arranged in the inner housing 5, which is mounted on an inclined side wall 14 of the inner housing 5.
  • the driver assembly 13 comprises a carrier plate on which electronic components, among others a transformer and switching diodes, transistors and coils of a heat-producing power unit but also a temperature-sensitive capacitor for current smoothing and buffering, are attached.
  • Bottom wall 12 and / or side walls 14 of the inner housing 5 are inside at least partially lined by a cooling plate 15. Heat generated in the power section of the driver board 13 is effectively conducted to the large-area heat sink 20. Due to the close arrangement of the cooling plate 15 on the bottom wall 12 and side walls 14, the heat absorbed is dissipated well via the inner housing 5 to the ambient air.
  • the Fresnel lens 8 For further removal of heated air from an inner housing 5 and Fresnel lens 8 enclosed interior 16, the Fresnel lens 8 according to 2 and FIG. 3 Air channels 17, which connect the interior 16 with an enclosed by Fresnel lens 8 and diffuser 9 space 18. Thus, a direct flow of air from the interior 16 is made possible in the intermediate space 18, where the heated air can cool at the standing with the outdoor environment 19 in contact lens 9.
  • the air channels 17 are arranged in an edge region 20 of the Fresnel lens 8.
  • the edge region 20 annularly surrounds an optically active central region 21 of the Fresnel lens 8, in which a number of annular steps 22 for focusing the light are arranged.
  • the Fresnel lens 8 has in its edge region 20 an inner space 16 facing annular projection 23, wherein the air channels 17 extend from an inner circumferential surface 24 to an outer lateral surface 25 of the projection 23.
  • twelve air channels 17 are distributed uniformly over the edge region 20 with a pitch circle distance 26 of 30 °.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Traffic Control Systems (AREA)

Claims (5)

  1. Emetteur (1) de signal d'émission d'un signal lumineux pour le trafic routier ou ferroviaire, comprenant un boîtier (5) intérieur en forme de pot, ayant une ouverture (6) avant, dans laquelle sont montés une source lumineuse, ayant au moins une diode (11) électroluminescente, et un module (13) de commande d'alimentation en énergie de la source lumineuse, et, pour influer sur la lumière émise par la source lumineuse, une coiffe (7) optique fermant l'ouverture (6) avant et ayant une lentille (8) de Fresnel se trouvant à l'intérieur et un écran (9) diffusant se trouvant à l'extérieur, caractérisé en ce que la lentille (8) de Fresnel a des conduits (17) pour de l'air, qui mettent un espace (16) intérieur, entouré du boîtier (5) intérieur et de la lentille (8) de Fresnel, en communication avec un espace (18) intermédiaire, entouré de la lentille (8) de Fresnel et de l'écran (9) diffusant.
  2. Emetteur (1) de signal suivant la revendication 1, dans lequel la lentille (8) de Fresnel a une partie (21) centrale active optiquement et une partie (20) de bord l'entourant en forme d'anneau de cercle et les conduits (17) pour de l'air s'étendent dans la partie (20) de bord.
  3. Emetteur (1) de signal suivant la revendication 2, dans lequel la lentille (8) de Fresnel a, dans sa partie (20) de bord, un rebord (23) en forme d'anneau de cercle, qui est tourné vers l'espace (16) intérieur et par lequel les conduits (17) pour de l'air s'étendent dans la direction radiale d'une surface (24) intérieure latérale à une surface (25) extérieure latérale du rebord (23).
  4. Emetteur (1) de signal suivant la revendication 3, dans lequel les conduits (17) pour de l'air sont répartis suivant une distance (26) de division de cercle régulière sur la région (20) de bord.
  5. Emetteur (1) de signal suivant l'une des revendications 1 à 4, dans lequel le boîtier (5) intérieur a une paroi (12) de fond opposée à l'ouverture (6) avant ainsi que des parois (14) latérales la reliant du côté du bord à l'ouverture (6) avant, la paroi (12) de fond et les parois (14) latérales étant habillées vers l'intérieur, au moins en partie, d'une tôle (15) de refroidissement.
EP15158840.7A 2014-03-24 2015-03-12 Émetteur d'un signal lumineux Active EP2927890B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014205453.2A DE102014205453A1 (de) 2014-03-24 2014-03-24 Signalgeber zur Abgabe eines Lichtsignals

Publications (3)

Publication Number Publication Date
EP2927890A2 EP2927890A2 (fr) 2015-10-07
EP2927890A3 EP2927890A3 (fr) 2016-04-06
EP2927890B1 true EP2927890B1 (fr) 2017-08-16

Family

ID=52686154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15158840.7A Active EP2927890B1 (fr) 2014-03-24 2015-03-12 Émetteur d'un signal lumineux

Country Status (4)

Country Link
EP (1) EP2927890B1 (fr)
DE (1) DE102014205453A1 (fr)
ES (1) ES2648092T3 (fr)
PT (1) PT2927890T (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105909989B (zh) * 2016-06-17 2022-02-01 上海策元实业有限公司 一种截光式led平板灯
DE102021211015A1 (de) 2021-09-30 2023-03-30 Siemens Mobility GmbH Signalgeber zur Abgabe eines Lichtsignals

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6210014B1 (en) * 1997-01-21 2001-04-03 Gore Enterprise Holdings, Inc. System for reducing condensation in enclosed lamp housings
AT409805B (de) * 1999-12-09 2002-11-25 Swarco Futurit Verkehrssignals Leuchtdioden-signalgeberoptik
US7490954B2 (en) * 2004-07-30 2009-02-17 Lumination Llc LED traffic signal
DE202006014987U1 (de) 2006-09-29 2006-12-14 Siemens Ag Signalleuchte
DE102007034373B4 (de) * 2007-07-24 2009-05-14 Dialight Garufo Gmbh Signalleuchte
US8123381B1 (en) * 2007-09-07 2012-02-28 J&J Electronics, Inc. LED lighting systems and methods useable for replacement of underwater niche lights and other applications
DE102011052577A1 (de) * 2011-08-11 2013-02-14 Hella Kgaa Hueck & Co. Lichtmodul für eine Außenleuchte

Also Published As

Publication number Publication date
EP2927890A3 (fr) 2016-04-06
PT2927890T (pt) 2017-11-08
DE102014205453A1 (de) 2015-09-24
EP2927890A2 (fr) 2015-10-07
ES2648092T3 (es) 2017-12-28

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