EP3296182A1 - Fanal de signalisation à led - Google Patents
Fanal de signalisation à led Download PDFInfo
- Publication number
- EP3296182A1 EP3296182A1 EP17191710.7A EP17191710A EP3296182A1 EP 3296182 A1 EP3296182 A1 EP 3296182A1 EP 17191710 A EP17191710 A EP 17191710A EP 3296182 A1 EP3296182 A1 EP 3296182A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- leds
- led
- signal light
- led signal
- 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
- 230000003287 optical effect Effects 0.000 claims abstract description 53
- 238000000265 homogenisation Methods 0.000 claims description 8
- 230000005855 radiation Effects 0.000 claims description 6
- 238000000149 argon plasma sintering Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 description 4
- 239000003086 colorant Substances 0.000 description 3
- 230000001795 light effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/12—Visible signals
- B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
- B61L5/1809—Daylight signals
- B61L5/1827—Daylight signals using light sources of different colours and a common optical system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
- B61L5/12—Visible signals
- B61L5/18—Light signals; Mechanisms associated therewith, e.g. blinders
- B61L5/1809—Daylight signals
- B61L5/1845—Optical systems, lenses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L2207/00—Features of light signals
- B61L2207/02—Features of light signals using light-emitting diodes [LEDs]
Definitions
- the invention relates to an LED signal light as it is used in particular in rail traffic in so-called route signals.
- the invention also relates to a track signal with a corresponding LED signal light and an optical component for such an LED signal light.
- Signal lights of the type in question are used primarily as so-called track signals in rail transport and are then subject to special requirements in terms of safety and radiation characteristics (light intensity distribution), which are specified by the users of corresponding signal lights.
- the requirements of Deutsche Bahn have been specified and proven to be particularly accurate, so that they are adopted by different signal lamps users worldwide in identical or analogous form.
- the requirements regularly provide for a specific light intensity distribution which is specified in relation to a so-called main emission direction.
- the main radiation direction is usually an imaginary horizontal line emerging centrally from the signal, in relation to which the light intensity distribution is specified by the fact that certain light intensities have to be reached by the signal light at certain angles relative to the main emission direction.
- Signal lights of the type in question are used both in so-called upper and in so-called lower path signals, wherein lower path signals are signals in which the center of the usually round illuminated signal surface is about 8 to 30 cm above the rail top, while in a upper path signal is the center of the signal surface typically about 360 to 550 cm above the rail top edge.
- two-filament incandescent lamps were formerly used in which could be switched to another filament after failure of a filament. Due to the various advantages of LED technology and, above all, the fact that LED luminous flux has increased dramatically, two-lamp incandescent bulbs are gradually replaced by LED modules, some of which are designed to be classic Two-filament incandescent lamp simulate, since the replacement of the corresponding control electronics would be associated with considerable effort.
- An example of an LED signal lamp with separately controllable in the manner of a two-filament incandescent strands of series-connected LEDs shows the EP 1 992 542 B2 which also explains a typical light intensity distribution with respect to the main emission direction.
- a so far unsatisfactorily solved problem with LED signal lights is the so-called phantom light, which is caused by external to the signal light incoming light and causes the signal light at least under certain viewing angles appears as if they (in multi-colored signal lights, if necessary in one certain color).
- the EP 0 860 805 A1 proposes to arrange a Fresnel lens a specially trained scattering lens of the same diameter, which should deflect the emitted light down, so that at least when the sun is high, sunlight should not be able to reach the LEDs.
- the invention is based on the object of specifying an improved with regard to the reduction of phantom light effects LED signal light.
- the object is achieved by an LED signal lamp with the features of claim 1.
- the independent claim 13 relates to a track signal for rail traffic with an LED signal lamp according to the invention.
- the independent claim 14 relates to a compact optical component for an LED signal lamp according to the invention.
- the dependent claims relate to advantageous embodiments and refinements of the LED signal light.
- the LED signal light according to the invention is particularly compact and, in an advantageous development, not only makes it possible to configure the LEDs provided for generating signal light of a specific color redundantly and separately, but also to provide separately controllable LEDs of different colors, so that with a corresponding LED Signal lamp different signal images can be generated.
- the LED signal light according to the invention can easily be designed so that it can be used both at upper and at lower range signals. This makes it possible for the invention to provide a "universal LED signal light", which can be manufactured in large quantities and therefore cost-effective and can meet a wide variety of user-side application requirements while high reliability.
- Fig. 1 is shown in its entirety with 10 designated LED signal light, the Fig. 1 the signal lamp for the basic understanding of the invention is highly schematic, while Fig. 2 the so-called first optical component in plan view shows.
- the dot-dashed optical axis 30 of the sections for receiving and focusing the light emitted by the LEDs, for homogenizing the recorded and collimated light and for collimating the homogenized light by an angle ⁇ of about 5.5 degrees vertically downwards, is clearly discernible tilted relative to the main emission direction 32. It should be noted that in the drawing for clarity, the optical axis 30 was also pulled through the light scattering section and generating the desired light intensity distribution of the optical device 22, while this section is straight, the light generated by the LED in the shown situation to break down, so compensate for the tilting of the optical axes of the three sections mentioned.
- the lens is also inclined against the Hauptabstrahlraum 32, in such a way that their surface normal 34 with the main radiation 32 at an angle ⁇ of 15 degrees in the same direction of rotation in which also the optical axis 30 of the sections for recording and bundling, homogenization and collimation deviates from the main emission direction.
- the board 12 is also inclined to the main emission direction 32, so that at least the side of the board 12 facing the light exit side of the signal light 10 is perpendicular to the optical axis 30 of the sections for receiving and bundling the light emitted by the LEDs. which favors the design of these sections for inclusion and bundling.
- Fig. 1 the situation is shown in which the LED signal light 10 is to be used as the upper path signal.
- the requirements to be met by such a path signal with regard to the light intensity distribution are known to the person skilled in the art and can be met by him by appropriate design of the individual scattering surfaces on the light exit side of the optical component 22.
- a peculiarity of the embodiment of a signal light 10 according to the invention shown here is that it can be used by a simple rotation through 180 degrees about an axis passing through the main emission direction 32 both as an upper path signal and as a lower path signal. In the latter case, the light is then scattered from the individual light exit surfaces of the diffusing section of the optical component 22 down to an angle range of about 1 degree to about 34 degrees with respect to the main emission direction 32.
- This in Fig. 2 shown embodiment of an optical device 16 is for use with six in a row next to each other on the in Fig. 1 shown board 12 arranged LEDs formed.
- the LEDs may be, for example, six green, four blue and two white, four yellow and two white, or four red and two white LEDs, which may be advantageous according to one of the in FIGS Fig. 7 can be arranged, which will be discussed below.
- each LED of each color has at least two separately controllable LEDs, it being possible, for example, to switch between the LEDs each time a specific signal color is switched on in order to achieve uniform wear of all LEDs of the same color.
- Advantageous ways and ways of driving the individual LEDs are, for example, in the aforementioned EP 1 992 542 B, to the disclosure of which reference is made.
- the optical component 16 comprises six sections 18 which are each designed to receive and bundle the light emitted by one of the LEDs.
- bundling is understood to mean the reduction of the emission angle of the LEDs, which may comprise almost 180 degrees, depending on the type of LED used, so that as much of the emitted light as possible can be picked up and used to generate a light signal.
- the sections 18 are integrally formed on a substantially parallelepiped-shaped section 36 for the homogenization and optionally thorough mixing of the LED light entering the optical component 16 via the sections 18.
- the section 36 blurs virtually the place of origin of the incident light, so that its light exit surface 38 appears almost uniformly illuminated, regardless of whether one or more LEDs are turned on, so that then the light exit surface of the signal light also appears uniformly illuminated and, if as in this perennialsbespiel of each LED of each color at least two separately controllable LEDs are available, for one and the same color also gives a virtually identical light distribution.
- the optical component 16 has in this embodiment further comprises two integrally formed on the component, here substantially cylindrical alignment elements 40, which are provided with receiving bores for one fastening screw and at their respective end facing the board over a substantially cylindrical, reduced in diameter Passport portion 44 have, the outer profile is at least partially complementary to the inner profile of a corresponding fitting bore in the board 12.
- the optical component 16 can be manufactured inexpensively from suitable plastics as a high-precision plastic injection-molded part.
- the retaining disk 20 is shown from two perspectives.
- This holding disc 20 advantageously performs a dual function: on the one hand it has via a slot 46, the inner contour exactly to the outer contour of the cuboid portion 36 of the example in the FIGS. 3 and 4 shown optical component 16 is adapted so that it allows an exact guidance and support of this section.
- it is at least light-absorbing colored on its side in the intended mounting state of the light exit side of the signal light side, in particular black, so that it absorbs incidental light in large part, and also has a substantially scattering reflective portion 48 and one with a structure for directional reflection provided portion 50, which may be polished.
- This embodiment advantageously contributes to the further reduction of phantom light, since then, when the signal light as in Fig. 1 is shown as the upper signal light is used, which is provided with the directionally reflective structure provided portion 50 in the lower half of the signal lamp, can get into the obliquely from above from the outside incident light. The structure then reflects the portion of the light that is not absorbed by the retaining disc, targeted upward from the signal light, so that it can not be perceived under the typical viewing angles.
- the scattering reflective portion 48 of the holding plate 20 is in the area where light incident obliquely from outside into the signal lamp is located can hit the retaining disc, so that the part of the light that is not absorbed by the retaining disc, scattering reflected and also directed away from the viewer.
- the effect can advantageously be enhanced by the fact that the inside of the housing 26 is provided with a light-absorbing layer.
- optical component which in this embodiment of an LED signal lamp according to the invention both the section for collimating the homogenized light and the portion for scattering the homogenized light to achieve a relation to a predefined main emission predetermined light intensity distribution as integral components.
- the collimating section is formed by a convex section 52 having a focal point which is located in the region of the light exit surface 38 (FIG. Fig. 2 ) of the optical component 16 is located and parallelizes the arriving via the optical component 16 LED light.
- the optical component 22 has in this embodiment also has a portion 54 for scattering, in the side view of Fig. 6 is wedge-shaped and its light exit side is provided with a plurality of suitably shaped light exit surfaces 56, which scatter the parallelized light in the user-specified manner so as to give the desired light distribution.
- the individual light exit surfaces 56 are free-form surfaces, which in the merely schematic representation of FIGS. 5 and 6 Although they look identical, they are actually calculated and designed individually based on the user's specifications.
- Fig. 7 are purely by way of example and not limitation, four different in each case advantageous arrangements of each six LEDs in series shown side by side.
- the arrangement a) comprises two red LEDs R1, two red LEDs R2 and a white LED W1 and a white LED W2.
- the two red LEDs R1 are connected in series as well as the two red LEDs R2, so that the red LEDs R1 and the red LEDs R2 each form a strand, which can be controlled separately.
- the two white LEDs W1 and W2 can also be controlled separately.
- the arrangement of the six LEDs is advantageously made such that the spacing between the LEDs of each strand is maximized.
- the illustrated arrangement a) can serve as a so-called “signal light red-white", as used in the so-called “70 mm design” (diameter of the illuminated area on the lens of the signal) ", for example, by Deutsche Bahn R1, R2, W1 and W2 can each be controlled separately, so that either only the two LEDs R1, only the two LEDs R2 or only one of the LEDs W1 and W2 are lit. If the LEDs are functioning, then the other LED or string can be activated in case of malfunction, making the LED indicator light fail-safe.
- the LEDs or LED strands are alternately turned on, that is, after operation of the strand with the LEDs R1 then when the next time a red signal is to be generated , first the string with the LEDs R2 is turned on (if this does not show a malfunction).
- two colored LEDs in a string are connected in series, namely in the arrangement b) two yellow LEDs Y1 and two yellow LEDs Y2 or in the arrangement c) two blue LEDs B1 and two blue LEDs B2.
- Both arrangements b) and c) each also comprise two white LEDs W1 and W2 and can be operated analogously to the manner previously described for arrangement a) as "signal light yellow-white” or "signal light blue-white".
- the arrangement d) shows an arrangement in which three green LEDs G1 and three green LEDs G2 are connected together in each case to a separately controllable strand. Depending on the required light intensity, it may be sufficient in such an arrangement, if a strand comprises only two green LEDs.
- the arrangement of the individual LEDs is advantageously made such that the spacings of the LEDs of one and the same strand or, in other words, the spacings of those LEDs which are lit simultaneously depending on the desired signal image, are maximized.
- the optical component shown in FIG. 1, which comprises both the homogenized light collimating section and the homogenized light scattering section, may be realized by separate components.
- the section shown for collimation may also be provided by a Fresnel lens.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Traffic Control Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016117620 | 2016-09-19 | ||
DE102016124265.9A DE102016124265A1 (de) | 2016-09-19 | 2016-12-13 | LED-Signalleuchte |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3296182A1 true EP3296182A1 (fr) | 2018-03-21 |
EP3296182B1 EP3296182B1 (fr) | 2019-02-27 |
Family
ID=60037349
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17191710.7A Active EP3296182B1 (fr) | 2016-09-19 | 2017-09-18 | Fanal de signalisation à led |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP3296182B1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111409669A (zh) * | 2020-04-10 | 2020-07-14 | 沈阳铁通新技术开发有限公司 | 一种带探照灯的新型手信号灯 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0713999A1 (fr) * | 1994-11-24 | 1996-05-29 | Siemens Integra Verkehrstechnik Ag | Dispositif de signaux lumineux à diodes électroluminescentes |
DE102010024381A1 (de) * | 2010-06-16 | 2011-12-22 | Siemens Aktiengesellschaft | Lichtsignal |
DE102010064376A1 (de) * | 2010-12-30 | 2012-07-05 | Siemens Aktiengesellschaft | Lichtsignal |
DE102011054229A1 (de) * | 2011-10-06 | 2013-04-11 | Hella Kgaa Hueck & Co. | Beleuchtungsvorrichtung für Fahrzeuge |
-
2017
- 2017-09-18 EP EP17191710.7A patent/EP3296182B1/fr active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0713999A1 (fr) * | 1994-11-24 | 1996-05-29 | Siemens Integra Verkehrstechnik Ag | Dispositif de signaux lumineux à diodes électroluminescentes |
DE102010024381A1 (de) * | 2010-06-16 | 2011-12-22 | Siemens Aktiengesellschaft | Lichtsignal |
DE102010064376A1 (de) * | 2010-12-30 | 2012-07-05 | Siemens Aktiengesellschaft | Lichtsignal |
DE102011054229A1 (de) * | 2011-10-06 | 2013-04-11 | Hella Kgaa Hueck & Co. | Beleuchtungsvorrichtung für Fahrzeuge |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111409669A (zh) * | 2020-04-10 | 2020-07-14 | 沈阳铁通新技术开发有限公司 | 一种带探照灯的新型手信号灯 |
Also Published As
Publication number | Publication date |
---|---|
EP3296182B1 (fr) | 2019-02-27 |
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