EP0669493B1 - Blinkleuchte - Google Patents

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Publication number
EP0669493B1
EP0669493B1 EP95101823A EP95101823A EP0669493B1 EP 0669493 B1 EP0669493 B1 EP 0669493B1 EP 95101823 A EP95101823 A EP 95101823A EP 95101823 A EP95101823 A EP 95101823A EP 0669493 B1 EP0669493 B1 EP 0669493B1
Authority
EP
European Patent Office
Prior art keywords
light
reflector
section
sections
flashlight according
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
EP95101823A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0669493A1 (de
Inventor
Beate Weigelt
Martin Mügge
Detlef Decker
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Priority to SI9530037T priority Critical patent/SI0669493T1/xx
Publication of EP0669493A1 publication Critical patent/EP0669493A1/de
Application granted granted Critical
Publication of EP0669493B1 publication Critical patent/EP0669493B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors

Definitions

  • the invention relates to a turn signal lamp for vehicles, which is arranged in the corner region of the vehicle, with a reflector which has an outer first reflector section and an inner second reflector section, with a light source, the holder of which is arranged between the reflector sections and with a light outside final lens, which extends far back into the side area of the vehicle, the free end of the outer first reflector section being delimited by the lens.
  • a flashing light for motor vehicles is known from German published patent application DE 32 08 741 A1, which is suitable as a front flashing light for installation in the corner area of the vehicle.
  • This has a lens that is retracted far into the side area of the vehicle. This lens closes the housing of the turn signal lamp from the outside.
  • the flashing light also has a reflector with an outer first reflector section and an inner second reflector section.
  • the flashing light has a light source, the socket of which is arranged between the reflector sections. The free end of the outer first reflector section is limited by the lens.
  • This flashing light also has a reflector optics arranged on the side.
  • the two reflector sections are each designed as parabolas, as a result of which an essentially parallel bundle of light rays is generated when the light rays are reflected from the light source and the lens thus generates the required ones Light distribution must have light-scattering optical elements.
  • the two reflector sections do not or only partially generate the same light distribution, as a result of which the available light is not used optimally.
  • the two reflector sections are not formed in one piece and the surfaces of the reflector sections do not merge continuously, which on the one hand reduces the light yield and on the other hand the production of the turn signal lamp is cost-intensive.
  • the lens has light-scattering optical means, as a result of which an optically inconsistent appearance is produced, in particular when the turn signal lamp is arranged directly next to a headlight.
  • the invention has for its object to provide a flashing light which has two reflector sections, the light intensities generated by the reflector sections complementing each other in the best possible way for maximum luminous efficiency.
  • the object is achieved in that the reflector sections are formed in one piece and the surfaces of the reflector sections merge continuously, that when the reflector sections are projected in the direction of travel, the inner second reflector section has at least the size of the first reflector section in that the surfaces of the two reflector sections are designed in this way that the radiation direction changes continuously with the geometric location on the surface and that both reflector sections produce the same light distribution, both reflector sections having a light-scattering radiation characteristic in both the horizontal and vertical sections with respect to the light distribution to be achieved.
  • the reflector sections are formed in one piece and the surfaces of the reflector sections merge continuously into one another because, in addition to simple and inexpensive manufacture of the turn signal lamp, in particular the best possible utilization of the available luminous flux is made possible.
  • a particular advantage results when the lens has no light-deflecting optical means and the reflector is visible from the outside, since a division of the reflector in two or a step between the reflector sections would disturb the optical appearance.
  • the inner second reflector section has at least the size of the outer first reflector section and that the surfaces of the two reflector sections are designed such that the radiation direction changes continuously with the geometric location on the surface because thus the flashing light can be produced simply and inexpensively, light-scattering optical means in the lens can be dispensed with and optimal use of the light emitted by the light source is possible.
  • both reflector sections produce the same light distribution, with both reflector sections having a light-scattering radiation characteristic, both in the horizontal and in the vertical section, with respect to the light distribution to be achieved, because thus the best possible installation position of the lamp Utilization of the available light is achieved, a particularly advantageous division of the reflector sections is made possible and the required light distribution is achieved in the best possible way by the complementary illuminance levels from the two reflector sections, without optical light-scattering elements being arranged in the lens.
  • FIG. 1 shows schematically the structure of a flashing light according to the invention.
  • the turn signal is shown in horizontal section.
  • the flashing light has a housing (G) which is closed by a lens (S).
  • the flashing light is suitable for installation in the corner area of a vehicle. The installation can take place in the front area as well as in the rear area of the vehicle.
  • the lens (S) extends far back into the side area of the vehicle.
  • the flashing light has a light source (L), the incandescent filament position of which is indicated only schematically in FIG. 1.
  • the light source (L) is held in the housing (G) via a holder (F), the holder (F) being arranged between a first outer reflector section (R1) and an inner second reflector section (R2) of a reflector.
  • the free end of the outer first reflector section (R1) is limited by the lens (S).
  • the two reflector sections (R1, R2) can be formed as part of the housing, which enables the flashing light to be manufactured cost-effectively.
  • the two reflector sections (R1, R2) are formed in one piece and the surfaces of the reflector sections (R1, R2) merge continuously into one another.
  • the surfaces of the two reflector sections (R1, R2) are designed in such a way that the direction of radiation of the light rays emanating from the light source (L) changes continuously with the geometric location on the surface of the reflector sections (R1, R2). Both reflector sections (R1, R2) generate the same light distribution with complementary light intensities for optimal light yield, both reflector sections (R1, R2) having a light-scattering radiation characteristic in both horizontal and vertical sections with respect to the light distribution to be achieved.
  • the lens (S) has no light-deflecting optical means between its edge regions (B1, B2).
  • light-deflecting optical means can also be dispensed with in the peripheral areas (B1, B2).
  • vertically extending, horizontally light-scattering optical elements (E) can be arranged in the front edge region (B1), which deflect the light incident on them towards the vehicle center axis.
  • This front edge area (B1) has a small width and is limited to a few light-scattering optical elements (E).
  • four optical elements (E) are shown as an example. In other exemplary embodiments, two to ten optical elements (E) can be arranged on the inside of the lens.
  • the lens (S) has a retroreflective lens (RS) in its rear edge region (B2).
  • This reflector optics (RS) can be integrated in the lens (S), but it can also, as shown in FIG. 1, be arranged as an additional lens inside the flashing light behind the lens (S).
  • the arrangement can also be chosen so that the reflector (RS) extends into the area next to the light source (L) and in this case has light passages for the lateral light emission.
  • the light source (LL) can be equipped with two filaments, the second filament generating a position light via the reflector sections (R1, R2).
  • the lens (S) is made crystal-clear and, at least between its edge regions (B1, B2), has no light-scattering optical elements, so that an observer can view the two reflector sections (R1, R2) and the light source (L) from the outside can see freely.
  • a filter means is arranged between the lens (S) and the filament of the light source (L), which can be designed as an incandescent lamp bulb colored in the signal color, or as a lens disc colored in the signal color that envelops the light source (L).
  • the lens (S) can also be made in the signal color of the flashing light.
  • the lens (S) can be made of glass or plastic.
  • the flashing light shown in Figure 1 can also be formed as part of a multi-chamber rear light for motor vehicles or as a front turn signal for vehicles, the housing of which is made in one piece with the housing of an adjacent headlight.
  • the flashing light can be covered by a single separate lens (S) or can be made in one piece with the lens covering the other light functions of the headlight or the rear lamp, which results in a particularly uniform external appearance.
  • FIG. 2 shows the projection of the reflector sections (R1, R2) in the direction of travel according to a flashing light as described in FIG. 1, but with a different size distribution.
  • the socket (F) is arranged between the reflector sections (R1, R2).
  • the dividing line between the reflector sections (R1, R2) can run strictly vertically. But it can also be inclined or curvilinear depending on the installation situation of the direction indicator.
  • FIG. 3 shows a horizontal section AA according to FIG. 2 through a reflector according to the invention, with two Reflector sections (R1, R2).
  • the surfaces of both reflector sections (R1, R2) are designed in such a way that the direction of radiation changes continuously with the geometric location on the surface.
  • the outer first reflector section (R1) has a parabolic-like defocused radiation characteristic, so that a diverging light beam is generated.
  • the light rays emanating from the filament of the light source (L) are not all deflected outwards when they are reflected on the surface of the outer first reflector section (R1), but the light beam generated has a light scattering that corresponds to the horizontal light distribution to be achieved.
  • the inner second reflector section (R2) also has a parabolic-like defocused radiation characteristic in this horizontal section, so that a diverging light beam is also generated, as already described for the outer first reflector section (R1).
  • the diverging light beam produces the same horizontal light distribution as the light beam of the outer first reflector section (R1).
  • the two reflector sections do not generate individual light beams that act separately, but both light beams have the same light distribution and complement each other in terms of their light intensity, which produces maximum light output and optimal light distribution.
  • Figure 4 shows a vertical section BB through a reflector corresponding to Figure 2, both reflector sections (R1, R2) in this vertical section having an ellipse-like radiation characteristic, so that a converging light beam is generated by each of the reflector sections (R1, R2).
  • the radiation direction changes from that of Light source emitted light beams continuously with the geometric location on the surface of the reflector sections (R1, R2).
  • Figure 4 only the inner second reflector section (R2) and the holder (F) are shown.
  • the light-scattering radiation characteristic is generated in relation to the light distribution to be achieved in vertical section by light beams crossing in front of the light source (L), it is possible to arrange the reflector far in the rear area of the turn signal lamp without the reflected light beams being on the upper and lower boundary walls of the flashing light are reflected, so that no unwanted stray light occurs and these wall areas of the flashing light can be designed freely.
  • FIG. 5 shows a horizontal section through the reflector sections (R1, R2) of a flashing light, the inner second reflector section (R2) differing from the radiation characteristic of the reflector embodiment shown in FIGS. 2 and 3.
  • the inner second reflector section (R2) is extended far into the front area of the lens (S), not shown here, of the turn signal lamp.
  • the inner second reflector section (R2) has an elliptical-like radiation characteristic in horizontal section, similar to that described in FIG. 4, so that a converging light beam is generated. Since the required horizontal light deflection is greater than the required vertical light deflection, the intersecting light beams have a greater spread than shown by way of example in FIG. 4.
  • the intersection curve of two adjacent reflected light beams lies on the surface of the second reflector section (R2) from the mount (F) at a greater distance from the mount (F).
  • This also enables, as in the embodiment in FIG. 4, the reflector sections (R1, R2) in the To move the turn signal lamp far back without the light rays reflected by the inner second reflector section (R2) being accidentally scattered by a wall of the housing of the turn signal lamp.
  • an emission characteristic of the outer first reflector section (R1) is shown in FIG. 6 in the same horizontal section as an example.
  • This radiation characteristic which is defocused in a parabola-like manner in the horizontal section and thus generates a diverging light beam, corresponds to the radiation characteristic described in FIG. 3 for the outer first reflector section (R1).
  • the light source (L), the holder (F) and the inner second reflector section (R2) are only shown schematically in FIG.
  • FIG. 7 shows a vertical section through a vertical reflector arrangement with reflector sections (R1, R2), only the inner second reflector section (R2) being recognizable in this illustration.
  • Both reflector sections (R1, R2) can have the same radiation pattern, but the radiation pattern can also differ.
  • the radiation characteristic shown in FIG. 7 has a parabolic-like defocused radiation characteristic, so that a diverging light beam is generated. This light beam is generated as described in FIG. 3 for the horizontal section.
  • the exemplary light beam paths emanating from the light source and reflected by the reflector sections (R1, R2) are shown.
  • the holder (F) and the light source (L) are shown as examples in FIG.
  • FIG. 8 shows an example of an average light distribution to be achieved.
  • the light distribution must be achieved on a projection screen at a predetermined distance in front of the turn signal lamp.
  • the light distribution to be achieved varies.
  • the light distribution shown here in FIG. 8 is an averaged light distribution in which the numerical values are given in percent.
  • the horizontal angle varies between minus 30 degrees and plus 30 degrees.
  • the listed light values in the horizontal range are between minus 20 degrees and plus 20 degrees.
  • the vertical angle of the light distribution varies between minus 15 degrees and plus 15 degrees, with the light values given varying between minus 10 and plus 10 degrees.
  • an essentially rectangular light distribution is generated, the horizontal extent of which is greater than the vertical extent.
  • the light distribution is also very center-oriented. The highest light values are 0 degrees each and decrease towards the outside from the O-degree axis in both the vertical and horizontal directions.
  • each reflector section (R1, R2) generates the light distribution shown here by way of example, the light intensities being complementary.
  • the light intensities of the individual reflector sections (R1, R2) can differ. Characterized in that the same light distribution is generated by both reflector sections (R1, R2), the light intensities complementing each other, the light distribution to be achieved is achieved as best as possible and a maximum light yield is made possible.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Stroboscope Apparatuses (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
EP95101823A 1994-02-25 1995-02-10 Blinkleuchte Expired - Lifetime EP0669493B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SI9530037T SI0669493T1 (en) 1994-02-25 1995-02-10 Flashing lamp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4406183A DE4406183A1 (de) 1994-02-25 1994-02-25 Blinkleuchte
DE4406183 1994-02-25

Publications (2)

Publication Number Publication Date
EP0669493A1 EP0669493A1 (de) 1995-08-30
EP0669493B1 true EP0669493B1 (de) 1997-12-10

Family

ID=6511228

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95101823A Expired - Lifetime EP0669493B1 (de) 1994-02-25 1995-02-10 Blinkleuchte

Country Status (6)

Country Link
US (1) US5746496A (es)
EP (1) EP0669493B1 (es)
AT (1) ATE161082T1 (es)
DE (2) DE4406183A1 (es)
ES (1) ES2110267T3 (es)
SI (1) SI0669493T1 (es)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2753522B1 (fr) * 1996-09-19 1998-12-04 Valeo Vision Feu de signalisation de vehicule automobile, comportant un miroir a paves deviateurs perfectionnes
JP3953140B2 (ja) * 1997-05-22 2007-08-08 株式会社小糸製作所 車輌用灯具
DE10246945B4 (de) * 2002-10-08 2007-07-19 Hella Kgaa Hueck & Co. Fahrzeugleuchte mit Rückstrahlerelement
DE102007050738B4 (de) * 2007-10-22 2012-01-19 Gernot Förster Leuchte

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1559930A (en) * 1924-05-19 1925-11-03 Louis A Bean Automobile headlight
DE2214161C3 (de) * 1972-03-23 1979-11-08 Robert Bosch Gmbh, 7000 Stuttgart Befestigungsanordnung für Blinkleuchten von Kraftfahrzeugen
DE2939273A1 (de) * 1979-09-28 1981-04-16 Robert Bosch Gmbh, 7000 Stuttgart Fahrtrichtungsanzeiger fuer fahrzeuge
DE3005883A1 (de) * 1980-02-16 1981-10-08 Westfälische Metall Industrie KG Hueck & Co, 4780 Lippstadt Fahrzeug-signalleuchte
DE3208741C3 (de) * 1982-03-11 1993-11-18 Bosch Gmbh Robert Blinkleuchte, insbesondere vordere Blinkleuchte, für Kraftfahrzeuge
DE3239754A1 (de) * 1982-10-27 1984-05-03 Robert Bosch Gmbh, 7000 Stuttgart Signalleuchte, insbesondere vordere blinkleuchte, fuer kraftfahrzeuge
JPH0388201A (ja) * 1989-08-31 1991-04-12 Koito Mfg Co Ltd 自動車用灯具
DE4124373A1 (de) * 1991-07-23 1993-01-28 Hella Kg Hueck & Co Blinkleuchte
JP2787415B2 (ja) * 1994-03-28 1998-08-20 株式会社小糸製作所 車輌用標識灯

Also Published As

Publication number Publication date
SI0669493T1 (en) 1998-02-28
US5746496A (en) 1998-05-05
DE59501084D1 (de) 1998-01-22
DE4406183A1 (de) 1995-08-31
ES2110267T3 (es) 1998-02-01
ATE161082T1 (de) 1997-12-15
EP0669493A1 (de) 1995-08-30

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