EP0040853A1 - Lampe de signalisation - Google Patents
Lampe de signalisation Download PDFInfo
- Publication number
- EP0040853A1 EP0040853A1 EP81104038A EP81104038A EP0040853A1 EP 0040853 A1 EP0040853 A1 EP 0040853A1 EP 81104038 A EP81104038 A EP 81104038A EP 81104038 A EP81104038 A EP 81104038A EP 0040853 A1 EP0040853 A1 EP 0040853A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- slats
- scattering elements
- vertical
- horizontal
- 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
- 230000007704 transition Effects 0.000 claims abstract description 4
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000002745 absorbent Effects 0.000 claims description 2
- 239000002250 absorbent Substances 0.000 claims description 2
- 238000003892 spreading Methods 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 description 9
- 230000001629 suppression Effects 0.000 description 7
- 241000446313 Lamella Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 206010052128 Glare Diseases 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000004313 glare Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
Images
Classifications
-
- 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
- F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
- F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
-
- 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
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/255—Filters
-
- 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 a signal lamp with a light source, a light bundle optics assigned to the light source, a diffuser having scattering elements for the emerging light and essentially horizontally and at a distance from one another between the light source and the diffuser arranged slats for the absorption of incident external light on the top.
- Such a signal lamp is already known (DE-OS 26 34 522).
- This known signal light is provided as a rear light for a motor vehicle.
- Signal lights in particular also in the form of traffic lights or the like, must provide unmistakable information, in particular also with regard to the color or the operating state, so that it can always be clearly determined whether a color lights up or not.
- the operating state requires a signal light intensity or luminance, which is downward due to a minimum conspicuity and upwards due to the risk of glare in a dark environment and due to the requirement for low energy consumption in brighter surroundings Environment is limited.
- signal lights can not be operated with arbitrarily large brightness, and there is therefore the risk that due to external external light, in the case of traffic lights, in particular sunlight, the light illuminates so brightly due to reflections that it can be mistaken for a signal that is not switched on can arise.
- the sunlight reflected by traffic lights is known as "phantom light”. This can be caused by reflections on the front of the cover lens, on the boundary surfaces of the scattering elements of the lens, on the mirror surface of the reflector and on the lamp bulb.
- the horizontal slats provided in the known signal light serve to counteract the emergence of phantom light, as is the case with traffic lights, for example, by using a barge which is pulled over the traffic lights in a roof-like manner in order to shield the actual signal light from the impact of sunlight. It can be seen that such a barge can only to a limited extent prevent sunlight from entering the traffic light and leading to phantom light. Even the parallel slats no longer have the desired effect when the sunlight is very flat.
- the invention has for its object to provide a signal lamp that further reduces the occurrence of phantom light by incident external light, both with regard to the manufacture and operation of the lamp, in particular also with regard to the external light that penetrates from the border area of the interference light room without any significant additional cost which is adjacent to the observer room to be supplied with signal light.
- the spacing of the lamellae corresponds essentially to the height of the scattering elements, that the lamellae are arranged at the level of the transitions between the scattering elements which are essentially immediately adjacent in the vertical direction and that the scattering elements are designed such that they are inclined to deflect light from above or horizontally downwards more strongly in their upper area than in their lower area.
- the signal lamp 1 consists of a light source 2, a light beam optics in the form of a reflector 3 with an optical axis 4 and a diffusing screen 5.
- the optical axis 4 or the horizontal plane passing through it separates the upper half-light space 6 from the lower observer half-space 7.
- horizontal lamellae 8 are arranged one above the other at regular intervals. These horizontal slats 8 have an absorbent top 9 and a mirrored bottom 10.
- Vertical lamellae 11 are also arranged between the lens 5 and the light source 2 with uniform intervals.
- the horizontal slats 8 and the vertical slats 11 are offset from one another or arranged one behind the other in the direction of the optical axis 4, but can expediently be arranged in a common vertical plane with the formation of a grating.
- the slats 8 and / or 11 can each be rotated together around the optical axis 4 in order to make a setting depending on the specific application in which the external light or. Phantom light suppression is optimal.
- the lens 5 has on its inside scattering elements 12 which extend in the horizontal direction, have a height corresponding to the distance between adjacent horizontal slats 8 and are each aligned with the space between two adjacent horizontal slats 8.
- the scattering elements 12 are designed so that they deflect substantially horizontally incident extraneous light rays downward in their upper region 13 more than in their lower region 14. This results in the approximately sawtooth-shaped profile of the scattering elements 12.
- the formation and arrangement of the scattering elements 12 with respect to the lamellae 8, which are spaced h are arranged to each other, also results from Fig. 2nd
- the point of incidence of an incident light beam L characterized by the distance b depends on the deflection A. The following applies: so
- the depth b L of an ideal lamella 8 is determined by the point of impact which depends on the incidence height t and which strikes the farthest distance from the lens. A smaller value bL means that phantom light occurs.
- a mirroring of the underside of the slats is desirable if the natural scattering of the emitted signal light or the illuminating optics is so large that many rays strike the underside of the slats 10.
- the mirroring leads to the underside of the lamella 10 an increase in lighting efficiency.
- the underside mirroring and possibly also an intended structuring causes an increase in the depth scatter and side scatter even before penetration of the lens 5, so that the prism angles of the scatter elements 12 can be kept correspondingly smaller. This in turn brings about a reduction in the extraneous light already reflected by the scattering elements 12 of the scattering disc 5, which has a disruptive effect as a scattering disc phantom.
- This scattering disc phantom effect is based on the fact that the light beam falling on the scattering disc 5 from the outside is not only refracted but also reflected.
- each intermediate space between two adjacent vertical lamellae 11 is assigned a scattering element 15 which extends in the vertical direction and which, as shown, is shaped so that it is in its middle Area 16 incident light rays deflected more than in its lateral area 17 to the side on the adjacent flat side of the nearest vertical lamella 11.
- External light incident through the vertically running and laterally directly adjoining scattering elements 15 is thus directed more intensely onto the vertical lamellae 11 and is thus absorbed and rendered harmless.
- the increased phantom light suppression due to this lateral deflection of the incoming extraneous light essentially corresponds to the previously described phantom light suppression by vertical deflection of the incoming extraneous light beams. While in the vertical deflection, however, the extraneous light rays are to be deflected onto the upper sides of the slats and thus essentially only downwards, two absorbing slat surfaces are available for each vertical diffusion element 15 between two adjacent vertical slats 11, so that FIG. 4 has a symmetrical design shows, in which the deflection takes place laterally to the left in the left area and laterally to the right in the right area.
- the shape of the scattering elements 15 shown results with a vertical incision running essentially in the middle between the adjacent slats 11. Possibly. can, however, also be deviated from the symmetrical design without the advantage of it high ambient light absorption goes to nothing.
- the vertical slats may also be desirable to provide the vertical slats with a reflective coating on one or both sides and possibly not to align them parallel to the beam path.
- the vertical lamellae can also be spatially formed and have side surfaces which run at an angle to one another. This is desirable in the case of signals with large side scatter in order to achieve side scatter on the one hand, but also to reduce the phantom light caused by the lens itself due to the large prism angle. It is also conceivable to arrange both vertical mirrored slats and vertical absorbing slats one behind the other.
- the optimal solution for different directions of incidence must be checked in order to obtain the optimal overall solution.
- the illuminating optics can consist of a reflector such as reflector 3 in FIG. 1. This is usually the case with signal lights in traffic.
- the optics can also consist of a lens or a lens system, as is often the case with railway signal lights is. Combinations of reflector and lenses are also possible.
- the lens 5 can be flat or curved.
- the horizontal scattering elements 12 and the vertical scattering elements 15 can be repeated periodically over the entire spreading disc 5.
- the individual scattering elements can also be designed differently, or groups of the same type of scattering elements are formed which cover the scattering disc 5.
- training is also possible in which groups are repeated in which the individual scattering elements are designed differently in a typical manner.
- the lamellae are advantageously aligned with the special arrangement of the scattering elements.
- the described optimization principle can be interrupted in such a way that individual scattering elements or groups of scattering elements remain without associated slats.
- the horizontal scattering elements 12 and the vertical scattering elements 15 can be provided in mutual superimposition on a single side of the lens 5 or on the one hand on the front and on the other hand on the back of the lens 5, as shown in Fig. 1. Furthermore, it is also possible to work with two scattering disks arranged one behind the other, one of which has the horizontal scattering elements 12 and the other has the vertical scattering elements 15.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Traffic Control Systems (AREA)
- Burglar Alarm Systems (AREA)
- Selective Calling Equipment (AREA)
- Optical Elements Other Than Lenses (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Communication System (AREA)
- Facsimile Scanning Arrangements (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT81104038T ATE4658T1 (de) | 1980-05-27 | 1981-05-26 | Signalleuchte. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3020097A DE3020097C2 (de) | 1980-05-27 | 1980-05-27 | Signalleuchte |
DE3020097 | 1980-05-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0040853A1 true EP0040853A1 (fr) | 1981-12-02 |
EP0040853B1 EP0040853B1 (fr) | 1983-09-14 |
Family
ID=6103350
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81104038A Expired EP0040853B1 (fr) | 1980-05-27 | 1981-05-26 | Lampe de signalisation |
Country Status (7)
Country | Link |
---|---|
US (1) | US4390934A (fr) |
EP (1) | EP0040853B1 (fr) |
JP (1) | JPS5710182A (fr) |
AT (1) | ATE4658T1 (fr) |
DE (2) | DE3020097C2 (fr) |
DK (1) | DK231081A (fr) |
YU (1) | YU129381A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220290834A1 (en) * | 2021-03-10 | 2022-09-15 | Varroc Lighting Systems, s.r.o. | Light device of a vehicle to ensure a dark, or colored appearance of at least a part of the light device in the off state |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0097449B1 (fr) * | 1982-06-19 | 1986-04-09 | Britax Vega Limited | Feu pour véhicule |
DE3362901D1 (en) * | 1982-06-24 | 1986-05-15 | Britax Vega Ltd | Vehicle lamp assemblies |
DE3922830C2 (de) * | 1989-07-08 | 1993-10-14 | Swf Auto Electric Gmbh | Lichtabgabeoptik für Kraftfahrzeugleuchten |
US5506929A (en) * | 1994-10-19 | 1996-04-09 | Clio Technologies, Inc. | Light expanding system for producing a linear or planar light beam from a point-like light source |
CA2404537C (fr) | 2001-09-20 | 2010-11-30 | Genlyte Thomas Group Llc | Reflecteur ameliore d'appareil d'eclairage de stade |
TWI262277B (en) * | 2005-04-15 | 2006-09-21 | Ind Tech Res Inst | Integral type lighting device with a thin plate |
US7494252B1 (en) | 2006-06-29 | 2009-02-24 | Genlyte Thomas Group Llc | Compact luminaire enclosure |
US7946734B2 (en) * | 2007-02-28 | 2011-05-24 | Philips Electronics Ltd | Low up-light cutoff acorn style luminaire |
CA2623967C (fr) * | 2007-03-06 | 2015-11-24 | Canlyte Inc. | Luminaire avec reflecteur mixte |
US7988327B1 (en) | 2009-01-30 | 2011-08-02 | Koninklijke Philips Electronics N.V. | LED luminaire |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1318669A (en) * | 1972-09-25 | 1973-05-31 | Scott J W | Motor vehicle headlights |
DE2634522A1 (de) * | 1976-07-31 | 1978-02-02 | Rau Swf Autozubehoer | Signalleuchte fuer kraftfahrzeuge |
DE2743777A1 (de) * | 1977-09-29 | 1979-04-12 | Rau Swf Autozubehoer | Signalleuchte, insbesondere fuer kraftfahrzeuge |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR610148A (fr) * | 1926-08-30 | |||
US1806051A (en) * | 1927-06-29 | 1931-05-19 | Union Switch & Signal Co | Light signal |
US2142964A (en) * | 1935-11-27 | 1939-01-03 | United Lens Corp | Head lamp and lens construction |
DE1276517B (de) * | 1963-10-18 | 1968-08-29 | Sendlinger Optische Glaswerke | Reflektor-Signalscheinwerfer |
US4152756A (en) * | 1977-06-27 | 1979-05-01 | General Signal Corporation | Railroad crossing signal lamp |
DE2835808A1 (de) * | 1978-08-16 | 1980-02-28 | Rau Swf Autozubehoer | Signalleuchte, insbesondere fuer kraftfahrzeuge |
-
1980
- 1980-05-27 DE DE3020097A patent/DE3020097C2/de not_active Expired
-
1981
- 1981-05-19 YU YU01293/81A patent/YU129381A/xx unknown
- 1981-05-26 DE DE8181104038T patent/DE3160869D1/de not_active Expired
- 1981-05-26 DK DK231081A patent/DK231081A/da unknown
- 1981-05-26 US US06/267,079 patent/US4390934A/en not_active Expired - Fee Related
- 1981-05-26 EP EP81104038A patent/EP0040853B1/fr not_active Expired
- 1981-05-26 AT AT81104038T patent/ATE4658T1/de not_active IP Right Cessation
- 1981-05-27 JP JP7947781A patent/JPS5710182A/ja active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1318669A (en) * | 1972-09-25 | 1973-05-31 | Scott J W | Motor vehicle headlights |
DE2634522A1 (de) * | 1976-07-31 | 1978-02-02 | Rau Swf Autozubehoer | Signalleuchte fuer kraftfahrzeuge |
DE2743777A1 (de) * | 1977-09-29 | 1979-04-12 | Rau Swf Autozubehoer | Signalleuchte, insbesondere fuer kraftfahrzeuge |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220290834A1 (en) * | 2021-03-10 | 2022-09-15 | Varroc Lighting Systems, s.r.o. | Light device of a vehicle to ensure a dark, or colored appearance of at least a part of the light device in the off state |
US11852313B2 (en) * | 2021-03-10 | 2023-12-26 | PO LIGHTING CZECH s.r.o. | Light device of a vehicle to ensure a dark, or colored appearance of at least a part of the light device in the off state |
Also Published As
Publication number | Publication date |
---|---|
DE3020097A1 (de) | 1981-12-10 |
YU129381A (en) | 1983-06-30 |
DK231081A (da) | 1981-11-28 |
DE3160869D1 (en) | 1983-10-20 |
DE3020097C2 (de) | 1983-02-10 |
EP0040853B1 (fr) | 1983-09-14 |
JPS5710182A (en) | 1982-01-19 |
ATE4658T1 (de) | 1983-09-15 |
US4390934A (en) | 1983-06-28 |
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