EP2979955A2 - Unite a del pour emetteur de signaux lumineux et emetteur de signaux lumineux dote d'une telle unite - Google Patents
Unite a del pour emetteur de signaux lumineux et emetteur de signaux lumineux dote d'une telle unite Download PDFInfo
- Publication number
- EP2979955A2 EP2979955A2 EP15178964.1A EP15178964A EP2979955A2 EP 2979955 A2 EP2979955 A2 EP 2979955A2 EP 15178964 A EP15178964 A EP 15178964A EP 2979955 A2 EP2979955 A2 EP 2979955A2
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- European Patent Office
- Prior art keywords
- pole
- led
- unit
- switching device
- voltage
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- 239000004020 conductor Substances 0.000 claims abstract description 24
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000005259 measurement Methods 0.000 claims description 13
- 230000004907 flux Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 description 16
- 239000003990 capacitor Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 3
- 210000002023 somite Anatomy 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 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
- 238000010586 diagram Methods 0.000 description 1
- 238000009420 retrofitting Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L29/00—Safety means for rail/road crossing traffic
- B61L29/24—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning
- B61L29/28—Means for warning road traffic that a gate is closed or closing, or that rail traffic is approaching, e.g. for visible or audible warning electrically operated
-
- 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
- B61L5/1836—Daylight signals using light sources of different colours and separate optical systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L7/00—Remote control of local operating means for points, signals, or track-mounted scotch-blocks
- B61L7/06—Remote control of local operating means for points, signals, or track-mounted scotch-blocks using electrical transmission
- B61L7/08—Circuitry
- B61L7/10—Circuitry for light signals, e.g. for supervision, back-signalling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L9/00—Illumination specially adapted for points, form signals, or gates
- B61L9/04—Illumination specially adapted for points, form signals, or gates electric
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/16—Security signalling or alarm systems, e.g. redundant systems
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/32—Pulse-control circuits
- H05B45/325—Pulse-width modulation [PWM]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/37—Converter circuits
- H05B45/3725—Switched mode power supply [SMPS]
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/50—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits
- H05B45/58—Circuit arrangements for operating light-emitting diodes [LED] responsive to malfunctions or undesirable behaviour of LEDs; responsive to LED life; Protective circuits involving end of life detection of LEDs
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/02—Monitoring continuously signalling or alarm systems
- G08B29/10—Monitoring of the annunciator circuits
Definitions
- the invention relates to an LED unit for light signal transmitter, in particular for level crossings and provided with a corresponding unit of light signal transmitter, in particular for level crossings.
- light signals for level crossings serve to generate optical signals at level crossings, warning the road users of an approaching train.
- they are constructed so that a yellow and a red signal light are arranged on a post above a so-called St. Andrew's Crossing, at the approach of a train first the yellow signal light is turned on to give the road users opportunity to clear the immediate danger area, then what after a certain period of time, eg 3 to 5 seconds, the red signal light is switched on to indicate that the danger zone must not be retracted or entered.
- optical signal transmitters which use so-called two-filament incandescent lamps, each having a so-called main and a secondary filament (also called substitute filament), which are spatially offset in the incandescent lamp, wherein the secondary filament serves to a functioning of the incandescent lamp in case of failure of the main thread to secure and thus virtually forms an internal "replacement lamp".
- main and secondary filament also called substitute filament
- the switching is detected as a fault at the same time, so that the required lamp replacement can be displayed to the maintenance personnel.
- a LED light signal is known, which is used to replace the conventional two-filament incandescent lamps and which simulates the behavior of a conventional two-filament incandescent lamp such that in a function of a so equipped light signal transmitter monitoring interlocking in particular by a conventional current monitoring a failure of a "main thread" found and can be switched to the "secondary thread".
- level crossing light signal generator is additionally attached as a side light to an existing traffic light traffic signal transmitter (i.d., at a traffic light).
- traffic light traffic signal transmitter i.d., at a traffic light
- Such arrangements can be found at road junctions in the area of a railroad crossing.
- light signal transmitters as so-called “single lights” in the colors yellow, red and green.
- the invention has for its object to provide LED units with high reliability for traffic lights, especially for railroad crossings, which are improved under at least one of the following aspects: reliability, cost, low retrofit, maintenance, life.
- the invention is particularly in the in the EP 1 992 542 A2 shown LED assemblies applicable, the disclosure of EP 1 992 542 A2 is incorporated by reference into the present specification.
- the second lighting means may have any connection direction, since the second LED string is combined with at least one further LED string which is provided in the opposite direction of connection to the second LED string and which becomes active in the event of the return conductor failing.
- the second LED string is connected via a bridge rectifier of the second luminous means between the third pole and the second switching device.
- the first lighting means may have a bridge rectifier as well as the second lighting means.
- the light unit and preferably also the control unit of the LED unit is arranged on a circuit board, which not only facilitate the retrofitting of light sensors, but also a thermal coupling of the LEDs ensure both strands and thus allow more reliable comparisons of measured voltages among the first and second LED strands.
- a light signal transmitter in particular in the form of a signal light for railroad crossings, characterized by an LED unit of the invention, the lighting unit and preferably also the control unit are arranged on a circuit board, and further comprising an optical system, wherein the LED unit comprises a collimator and / or a scattering lens for the alignment of light emitted from the LED strands.
- the light signal transmitter or its LED unit can be operated according to a method corresponding to the functions of the LED unit or its control.
- LED string is understood here to mean a series connection of LEDs.
- an LED string according to the invention has two to eight LEDs, preferably three to six LEDs, in particular four LEDs.
- the forward voltage among the first and second LED strings differs by not more than 0.7 V, preferably not more than 0.5 V.
- Preferred in the invention are high-power LEDs with a power consumption of 3 to 7 W, in particular 5 W used.
- failure in the lighting unit is understood here as a complete failure of an LED string, both LED strands and / or individual LEDs in an LED string.
- the power source connection pole 4 may be a battery negative pole and each of the first and second connection poles may each provide a battery positive pole of a separate power source or may provide a battery center tap when the first and second terminal poles provide a pair of battery plus and battery pin poles.
- the first and second LED strings of first and second light sources 11, 12 each comprise a set of four high-power LEDs with the same binning.
- Equal binning means that LEDs of one manufacturing batch, and therefore with substantially equal forward voltage and substantially equal power consumption, are used so that the two sets have substantially homogeneous power consumption.
- a first light-emitting means 11 is connected via a first switching device 21 to a pole of a current source S1 and via a return conductor provided between two branch points P1, P2 of the circuit to a further pole of the current source S1, while a second light-emitting means 12 is through a second switching device 22 is separated from a pole of a further current source S2.
- the second light-emitting means 12 is connected via the second switching device 22 to the one pole of the further current source S2 and connected via the provided between the two branch points P1, P2 of the circuit return conductor to another pole of the further current source S2, while the first lighting means 11 is separated by the first switching means 21 from the one pole of a current source S1.
- Branching points P1, P2 thus branch a branch point P1 from the return conductor to the first and second lighting means and a branch point P2 from the return conductor to the further poles of the one and the further current source S1, S2.
- the return conductor is connected via the branch point P2 to the same poles of the one and the other current source S1, S2, in particular Batteriepluspole.
- the return conductor is connected via the branch point P2 to different poles of one and the other current source S1, S2, in particular to a Batteriemittenabgriff.
- a control of the first and second switching devices 21, 22 ensures, with a first control function, alternating switching on of the first and second lighting means with the first and second switching devices 21, 22, that is, alternating between the two FIGS. 1A and 1B or between the in FIGS. 2A and 2B shown states.
- a third switching device 23 between the branching point P2 and the second lighting means 12 is opened to ensure that the second lighting means 12 is switched on and off with the switching device 22.
- the Fig. 1C and FIG. 2C illustrate a second control function of the controller provided upon disconnection of the return conductor or detection of a failure of the LED unit due to the disconnection of the return conductor.
- the third switching device 23 is closed for connecting the second light-emitting means 12 to the further pole of a current source S1.
- a separation of the further current source S2 with the second switching device 22 is provided by the second lighting means 12.
- the bulbs are connected in series to the one power source S1 and the other power source S2 is turned off.
- Fig. 3 is illustrated by means of the second control function of the control for non-alternating connection of the first light-emitting means 11 with the first switching device 21 to the first pole and connecting the second light-emitting means 12 to the Stromttlenan gleichpol with the third switching device 23 when disconnected with the second switching device 22 of the second pole 32 and by means of a switching function of the control for switching from the first to the second control function upon detection of the failure by the measuring unit reaches a high reliability.
- a light-emitting diode LED unit comprises a lighting unit comprising first and second LED strings L of first and second lighting means 11 and 12, respectively, a first switching means 21 having a function of connecting the first LED string a first pole 31 of a three-pole terminal of the lighting unit and a second switching means 22 having a function of connecting the second LED string to a second pole 32 of the three-terminal of the lighting unit.
- a power source connection pole 4 can offer a counter pole for both the first and the second pole 31, 32, wherein a return conductor to the power source connection pole 4 is provided by a third pole 33 of the three-pole connection of the lighting unit common to the first and second LED strings.
- Each of the first and second LED strings L is connected between one of the first and second switching devices 21, 22 and the third pole 33 via a bridge rectifier having 4 rectifier diodes.
- the control of the first and second switching devices 21, 22 includes the first control function.
- the controller comprises a measuring unit, of which in Fig. 3 Voltage measuring means 51, 52, 61, 62 and current measuring means 81, 82 are shown, and has a function for detecting a failure of the lighting unit and a further function for detecting a failure in the lighting unit.
- the controller has the second control function, in order to disconnect from the second pole 32, the first pole 31 non-alternating to the first LED strand 11 with the first switching device 21 and the second LED strands 12 to the Stromttlenan gleichpol 4 with the third switching device 23 to connect.
- a changeover function of the controller serves to switch over from the first to the second control function when the measuring unit detects a failure.
- a first subunit T1 of the measuring unit has an input voltage measuring unit 51 for determining whether the first LED string is turned off and consequently the second LED string (according to the control function for alternately turning on the LED strings) is connected to the second pole 32 with the second switching device 22 is.
- this input voltage measuring unit 51 is connected in parallel with the first LED string between the first switching device 21 and the return conductor connection.
- the first subunit T1 of the measuring unit further has a diode forward voltage measuring unit 62 for measuring the diode forward voltage on the second LED string.
- the input voltage measurement unit 51 and the diode forward voltage measurement unit 62 are part of a voltage measurement function of the diode forward voltage of the second LED string when connected to the second pole 32 with the second switching device 22.
- a second subunit T2 of the measuring unit has an input voltage measuring unit 52 for determining whether the second LED string is turned off and consequently the first LED string (according to the control function for alternately turning on the LED strings) is connected to the first pole 31 with the first switching device 21 is.
- this input voltage measuring unit 52 is connected in parallel to the second LED string between the second switching device 22 and the third pole 33 and the return conductor.
- the second subunit T2 of the measuring unit further has a diode forward voltage measuring unit 61 for measuring the diode forward voltage on the first LED leg.
- the input voltage measurement unit 52 and diode forward voltage measurement unit 61 are part of a voltage measurement function of the diode forward voltage of the first LED string when connected to the first pole 31 with the first switching device 21.
- the function for detecting the measuring unit comprises a comparison of the diode forward voltages determined with the two subunits T1, T2 and voltage measuring functions and a failure detection signal output if the comparison yields at least one absolute value of a voltage difference above a threshold value.
- a threshold value a first value is provided in a first execution of the first control function in an initialization of the LED unit and a second value in each further execution of the first control function, wherein the first value is lower than the second value.
- the first value is set to 0.7 V and the second value is set to 1.0 V.
- the determination is made as to whether the first or second LED string with the respective switching device 21, 22 is connected to the respective first or second pole 31, 32, in accordance with the above in connection with the subunits T1, T2 and their input voltage measuring units 51, 52 functions described.
- the switching devices 21, 22 are each part of a pulse-width-modulated current source (PWM current source) of the respective LED string or of the respective luminous means 11, 12, which they can connect to one of the poles 31, 32.
- PWM current source pulse-width-modulated current source
- the PWM current sources of the positive pole as current source pole to poles 31 and 32 alternately turn on one of the LED strings, which are connected to minus via the one return conductor. If the return conductor is interrupted, for example due to vandalism at a level crossing signal, no current can flow according to the first control function, the LED strands remain dark.
- the output of the current source with the second switching device 22 switches to the negative pole, and the current source with the first switching device 21 takes over the power supply of the two LED strings.
- the circuit is then closed with series connection of the LED strands 11, 12 again. Both LED strands light up.
- a light signal transmitter with the LED unit for example, a level crossing light remains lit.
- the negative or positive pole can be, for example, that of a battery such as a 36 V battery. Accordingly, an LED unit according to the invention with the illustrated circuit performs the first control function in normal operation and the second control function when the return conductor connection fails.
- the light unit of the LED unit is formed on a board with thermal coupling among the first and second LED strings.
- Fig. 4 illustrates an embodiment of the in Fig. 3 illustrated subunits T1, T2 in combination with an LED unit 1, the one in EP 1 992 542 A2 corresponds to the described LED unit.
- an embodiment of the invention of the in Fig. 4 illustrated LED unit 1 in particular differ in that in a voltage converter, the in Fig. 3 illustrated second switching device 22 in the form of a voltage-controlled switch 92, the in Fig. 4 shown freewheeling diode 112 is replaced by another voltage-controlled switch 112B, the in Fig. 3 illustrated third switching device 23 forms.
- Fig. 5 illustrates, in the first and second current measuring functions, the determination of whether the first and second LED string with the respective switching device 21, 22 is connected to the respective pole 31, 32, with input current measuring units 71, 72 takes place.
- the input voltage measuring unit 71 is for determining whether the first LED string is turned off and consequently the second LED string (in accordance with the control function for alternately turning on the LED strings) is connected to the second pole 32 with the second switching device 22.
- this input voltage measuring unit 71 is connected between the first diode flux-current measuring unit 81 and the first LED string 11.
- the input voltage measuring unit 72 is for determining whether the second LED string is turned off, and thus the first LED string (according to the control function for alternately turning on the LED strings) is connected to the first pole 31 with the first switching device 21. For this purpose, this input voltage measuring unit 72 is connected between the second diode flux-current measuring unit 82 and the second LED string.
- the input current metering units 71, 72 and diode flux current metering units 81, 82 each comprise a combination of a sense resistor R1, R2, R3, R4 and a comparator N1, N2, N3, N4 suitably selected and switched to be at the comparator output, respectively
- a signal representing the input current or the flow of the first LED strand or the second LED strand is provided.
- the Stromierennan gleichpol 4 and via the return conductor and the third pole 33 are provided for providing a common Batterieminuspols two power sources.
- the first and second poles are provided as positive poles of voltage transformers provided for the current sources.
- the illustrated switches 91 and 92 serve both for voltage conversion and as first and second switching means, respectively.
- the above power sources have pulse width modulated DC-DC converters.
- the first LED string is connected between a first of the DC-DC converter and the negative pole 4 and the first Switching device 21 comprises a MOSFET as a voltage-controlled switch 91 for the function for connecting the first LED string 11 to the first pole 31.
- the second LED string 12 is connected between a second of the DC-DC converter and the negative pole 4 and the second switching device 22 comprises two MOSFETs as a voltage-controlled switch 92 for the function for connecting the second LED strand 12 to the second pole 32 and as another voltage-controlled switch 112B for connecting the second LED strand 12 to the negative terminal 4.
- the first of the and second DC-DC converter buck converter According to the circuit topology, the first of the and second DC-DC converter buck converter.
- switches 91, 92, 112B are designed as MOSFETs. They are driven by switch signal resistors 91A, 92A from the controller (not shown). With the controller, the DC and DC converters ensure the first and second control functions.
- the signal generator 112A generates a signal based on the signal output to the switch 92 to ensure a synchronous DC-DC converter mode in normal operation with a power supply corresponding to that of the DC-DC converter at the first power source pole 31, and advantageously the first control function.
- Fig. 4 illustrates the voltage monitoring with the subunits T1 and T2 to Fig. 3
- the StrománnanInstitutPol 4 a Batterieschabgriff
- the first pole 31 corresponds to a Batteriepluspol
- the second pole 32 corresponds to a Batterieminuspol.
- the illustrated voltage monitoring is thus particularly useful for voltage monitoring of two batteries.
- the current measuring units and the function of the second switching means for connecting the second LED string to the opposite pole are not shown for the sake of simplicity.
- a pole obtained by a battery center tap is provided.
- the second pole 32 is the battery miniature pole in the illustrated embodiment.
- each of the partial units T1 or T2 for voltage measurements via sets of resistors R5, R7 is shown, in each case with the first DC-DC converter at the first pole 31 and the first LED string or the second DC-DC converter at the second pole 32 and the second LED string or R6, R8 connected.
- Each of the subunits T1, T2 in each case has two combinations of a comparator N5, N6, N7, N8 and a measuring resistor R5, R6, R7, R8 connecting the comparator inputs.
- comparators are connected to each other via inputs of different polarity and the corresponding connection branches to the battery center tap.
- a comparator pair formed from comparators N5, N6 of the first and second subunits T1, T2 is in this case connected with its plus inputs via resistors R9, R12 to the first LED string of a first light source 11, namely with its with the choke coil 101 of first DC-DC converter connected end.
- another pair of comparators N7, N8 selected from the first and second sub-units T1, T2 are connected with their minus inputs via resistors R10, R11 to the second LED string 12, respectively, with its associated with the choke coil 102 of the second DC-DC converter The End.
- an input voltage of the first LED string is obtained at the output of the comparator N5
- a diode forward voltage of the first LED string is obtained at the output of the comparator N6
- an input voltage of the second LED string 12 at the output of the comparator N7 is obtained and at the output of the comparator N8, a diode forward voltage of the first LED string is obtained.
- the term "voltage obtained” is to be understood as meaning a voltage value representing the corresponding voltage.
- the LEDs of both LED strings of the lamps 11, 12 are arranged on a board and with thermal coupling, by a common placement of the LEDs of the first and second groups on a printed circuit board and a heat sink. In this way it is possible to change the method of voltage monitoring so that LEDs with different voltage BINs can be operated up to the maximum permissible line resistance.
- the voltage monitoring of a two-channel signal transmitter with the LED unit is designed for a specific LED type with a fixed voltage BIN. If this type is not available, a replacement type can not be used until after changing a set point for voltage monitoring.
- the voltage monitoring reliably detects a short circuit in an LED string L.
- a voltage monitoring based on a comparison of the two LED strands benefits.
- the voltage of both LED strings is determined as initialization.
- the difference between the two voltages must not be greater than 0.7 V in this example. If this is ensured as initialization, the operating phase (normal operation) begins. In the operating phase, it is then monitored whether no voltage jump of> 1 V has occurred from the last voltage value. A temperature tracking of the voltage limits is eliminated.
- a procedure performed with the LED unit works with appropriate tolerance specification of the comparison independent of the voltage BIN of the LEDs. If there is a failure of an LED, a difference of the diode forward voltages of both LED strands is not equal to zero and exceeds or falls below a designated detectable tolerance. Narrow tolerance is allowed because forward voltage fluctuations due to production tolerances of the LEDs are averaged by comparing forward voltages of the first and second groups. When monitoring the pair of first and second LED string is provided that the LEDs are traversed in each of the strands of an equal current.
- the illustrated circuit features in an LED unit may be combined into a circuit.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Computer Security & Cryptography (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014110700.4A DE102014110700A1 (de) | 2014-07-29 | 2014-07-29 | LED-Einheit für Lichtsignalgeber sowie Lichtsignalgeber mit einer solchen Einheit |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2979955A2 true EP2979955A2 (fr) | 2016-02-03 |
EP2979955A3 EP2979955A3 (fr) | 2016-02-10 |
EP2979955B1 EP2979955B1 (fr) | 2016-11-09 |
Family
ID=53761269
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15178964.1A Active EP2979955B1 (fr) | 2014-07-29 | 2015-07-29 | Unité à del pour émetteur de signaux lumineux et émetteur de signaux lumineux doté d'une telle unité |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2979955B1 (fr) |
DE (1) | DE102014110700A1 (fr) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1045360A1 (fr) | 1999-04-14 | 2000-10-18 | Scheidt & Bachmann Gmbh | Procédé de fonctionnement d'un appareil de signalisation lumineuse |
DE19947688A1 (de) | 1999-09-24 | 2001-04-05 | Siemens Ag | LED-Lichtsignal |
EP1992542A2 (fr) | 2007-05-07 | 2008-11-19 | Pintsch Bamag Antriebs- und Verkehrstechnik GmbH | Agencement DEL pour émetteurs de signaux lumineux, en particulier pour passages à niveaux, émetteur de signaux lumineux en particulier pour passages à niveaux dotés d'un tel dispositif DEL et procédé de fonctionnement d'un dispositif DEL |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5909182A (en) * | 1996-12-02 | 1999-06-01 | Alstom Signaling Inc. | Vandal resistant light signal unit |
AT507185B1 (de) * | 2008-08-07 | 2010-06-15 | Zizala Lichtsysteme Gmbh | Funktionsüberwachung einer led-anordnung |
EP2398126A1 (fr) * | 2010-06-16 | 2011-12-21 | Siemens Schweiz AG | Unité d'alimentation d'énergie de secours pour moyen d'éclairage de signal |
DE102012218772B3 (de) * | 2012-10-15 | 2014-10-30 | Continental Automotive Gmbh | Verfahren und Einrichtung zur Diagnose eines fehlerhaften Leuchtmittels |
-
2014
- 2014-07-29 DE DE102014110700.4A patent/DE102014110700A1/de not_active Withdrawn
-
2015
- 2015-07-29 EP EP15178964.1A patent/EP2979955B1/fr active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1045360A1 (fr) | 1999-04-14 | 2000-10-18 | Scheidt & Bachmann Gmbh | Procédé de fonctionnement d'un appareil de signalisation lumineuse |
DE19947688A1 (de) | 1999-09-24 | 2001-04-05 | Siemens Ag | LED-Lichtsignal |
EP1992542A2 (fr) | 2007-05-07 | 2008-11-19 | Pintsch Bamag Antriebs- und Verkehrstechnik GmbH | Agencement DEL pour émetteurs de signaux lumineux, en particulier pour passages à niveaux, émetteur de signaux lumineux en particulier pour passages à niveaux dotés d'un tel dispositif DEL et procédé de fonctionnement d'un dispositif DEL |
Also Published As
Publication number | Publication date |
---|---|
DE102014110700A1 (de) | 2016-02-04 |
EP2979955B1 (fr) | 2016-11-09 |
EP2979955A3 (fr) | 2016-02-10 |
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