EP0669493A1 - Feu clignotant - Google Patents
Feu clignotant Download PDFInfo
- Publication number
- EP0669493A1 EP0669493A1 EP95101823A EP95101823A EP0669493A1 EP 0669493 A1 EP0669493 A1 EP 0669493A1 EP 95101823 A EP95101823 A EP 95101823A EP 95101823 A EP95101823 A EP 95101823A EP 0669493 A1 EP0669493 A1 EP 0669493A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- light
- section
- sections
- lens
- 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.)
- Granted
Links
- 230000005855 radiation Effects 0.000 claims description 30
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000000149 argon plasma sintering Methods 0.000 claims description 14
- 239000013078 crystal Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract 1
- 230000007704 transition Effects 0.000 abstract 1
- 238000009434 installation Methods 0.000 description 5
- 230000000295 complement effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004040 coloring Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Images
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 turn signal lamp for motor vehicles which is suitable as a front turn signal lamp 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 has to have light-scattering optical elements in order to produce the required light distribution.
- 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, that the surfaces of the two reflector sections are formed in such a 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, this enables in particular the best possible use of the available luminous flux.
- 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 easily 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 in both the horizontal and vertical sections 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, due to the complementary illuminance levels from the two reflector sections, the required light distribution is achieved in the best possible way without optical light scattering elements are arranged in the lens, is achieved.
- 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 incandescent filaments, the second incandescent filament generating a position light via the reflector sections (R1, R2).
- the lens (S) is 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 incandescent filament of the light source (L) in this embodiment, which can be designed as a bulb colored in the signal color or as a lens 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 be made in one piece with the lens covering the other light functions of the headlamp or the rear lamp, which results in a particularly uniform external appearance.
- Figure 2 shows the projection of the reflector sections (R1, R2) in the direction of travel according to a flashing light as described in Figure 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.
- Figure 3 shows a horizontal section A-A according to Figure 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, thereby producing maximum light output and optimal light distribution.
- Figure 4 shows a vertical section B-B 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 direction of radiation of the light beams emitted by the light source changes 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.
- the crossing light rays have a greater spread than shown by way of example in Figure 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 makes it possible, as in the case of the embodiment in FIG. 4, to move the reflector sections (R1, R2) in the turn signal lamp far to the rear without the light rays reflected from the inner second reflector section (R2) being unwanted from a wall of the housing of the Flashing light can be scattered. There is also the advantage of the best possible light output.
- 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 each at 0 degrees and decrease from the 0 degree axis to the outside 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), with the light intensities complementing one another, the light distribution to be achieved is achieved as best as possible and a maximum light yield is made possible.
Landscapes
- 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)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Ultra Sonic Daignosis Equipment (AREA)
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 |
---|---|---|---|
DE4406183 | 1994-02-25 | ||
DE4406183A DE4406183A1 (de) | 1994-02-25 | 1994-02-25 | Blinkleuchte |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0669493A1 true EP0669493A1 (fr) | 1995-08-30 |
EP0669493B1 EP0669493B1 (fr) | 1997-12-10 |
Family
ID=6511228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95101823A Expired - Lifetime EP0669493B1 (fr) | 1994-02-25 | 1995-02-10 | Feu clignotant |
Country Status (6)
Country | Link |
---|---|
US (1) | US5746496A (fr) |
EP (1) | EP0669493B1 (fr) |
AT (1) | ATE161082T1 (fr) |
DE (2) | DE4406183A1 (fr) |
ES (1) | ES2110267T3 (fr) |
SI (1) | SI0669493T1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2325516A (en) * | 1997-05-22 | 1998-11-25 | Koito Mfg Co Ltd | Reflex reflector for vehicle lamp assembly |
Families Citing this family (3)
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 |
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 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2214161A1 (de) * | 1972-03-23 | 1973-09-27 | Bosch Gmbh Robert | Leuchtenanordnung fuer kraftfahrzeuge |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1559930A (en) * | 1924-05-19 | 1925-11-03 | Louis A Bean | Automobile headlight |
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 |
-
1994
- 1994-02-25 DE DE4406183A patent/DE4406183A1/de not_active Withdrawn
-
1995
- 1995-02-03 US US08/383,369 patent/US5746496A/en not_active Expired - Fee Related
- 1995-02-10 ES ES95101823T patent/ES2110267T3/es not_active Expired - Lifetime
- 1995-02-10 DE DE59501084T patent/DE59501084D1/de not_active Expired - Fee Related
- 1995-02-10 SI SI9530037T patent/SI0669493T1/xx unknown
- 1995-02-10 EP EP95101823A patent/EP0669493B1/fr not_active Expired - Lifetime
- 1995-02-10 AT AT95101823T patent/ATE161082T1/de not_active IP Right Cessation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2214161A1 (de) * | 1972-03-23 | 1973-09-27 | Bosch Gmbh Robert | Leuchtenanordnung fuer kraftfahrzeuge |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2325516A (en) * | 1997-05-22 | 1998-11-25 | Koito Mfg Co Ltd | Reflex reflector for vehicle lamp assembly |
GB2325516B (en) * | 1997-05-22 | 1999-04-07 | Koito Mfg Co Ltd | Vehicle lamp |
Also Published As
Publication number | Publication date |
---|---|
US5746496A (en) | 1998-05-05 |
DE4406183A1 (de) | 1995-08-31 |
EP0669493B1 (fr) | 1997-12-10 |
ES2110267T3 (es) | 1998-02-01 |
DE59501084D1 (de) | 1998-01-22 |
ATE161082T1 (de) | 1997-12-15 |
SI0669493T1 (en) | 1998-02-28 |
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