EP1289341B1 - Automotive lighting device with associated circuit and printed circuit board - Google Patents
Automotive lighting device with associated circuit and printed circuit board Download PDFInfo
- Publication number
- EP1289341B1 EP1289341B1 EP02016583.3A EP02016583A EP1289341B1 EP 1289341 B1 EP1289341 B1 EP 1289341B1 EP 02016583 A EP02016583 A EP 02016583A EP 1289341 B1 EP1289341 B1 EP 1289341B1
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- European Patent Office
- Prior art keywords
- circuit board
- circuit
- printed circuit
- diode
- arms
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- 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.)
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- 230000015572 biosynthetic process Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000000284 resting effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- 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]
Definitions
- the present invention relates to a vehicle lamp and a circuit board for a motor vehicle lamp.
- the circuit board has the features of the preamble of claim 1. Circuit arrangements are usually arranged on such printed circuit boards, wherein the printed circuit boards form the automotive lamp with a lower housing part and an at least partially transparent upper housing part.
- the diode switching is necessary to prevent voltage spikes that could destroy the light emitting diodes.
- diode circuits are often provided, so that the light can be connected to the external voltage of the electrical system (12 V or 24 V DC), regardless of the polarity of the light-emitting diodes.
- the rectified voltage is then tapped at the outputs of the diode circuit and supplied to the resistance circuit. Since the operating voltage of the LEDs, even if several are connected in series, is usually much lower than the voltage of the electrical system of a motor vehicle, the LEDs are connected in series with resistors of the resistance circuit, so as to divide the voltage between the resistors of the resistance circuit and the light-emitting diodes (voltage divider).
- Such circuits, printed circuit boards with such circuits and lights are well known in the art, for example, from Fig. 5 of the patent US 5 038 255 ,
- circuit arrangements are often used in the automotive sector as tail lights, brake lights or indicators.
- the use of the circuit arrangement and the printed circuit boards with such a circuit arrangement is not limited to the examples mentioned.
- a problem with the known automotive lamps arises when a printed circuit board is exposed to the circuitry the influence of moisture or even moisture. This may be the case if the housing of the lamp due to Damage or aging shows leaks through which precipitation moisture or water splashes into the luminaire. Often with the moisture impurities such as dirt or salts penetrate into the lamp. In such cases, electrochemical corrosion and electrolysis may cause creepage distances on the circuit board. Furthermore, conductive slurries can form which bridge small potential gaps on the printed circuit board, for example between contacts and components. If the luminaire is flooded with a saline solution, outgassing, sparks and electric arcs may be visible, which in rare cases may result in the luminaire burning off.
- the invention is therefore based on the object, the circuit board and the lamp itself to construct such that the risk of creepage distances is largely excluded.
- the resistance circuit serves, as already described, to divide the voltage of the vehicle electrical system so that only the operating voltage of the light-emitting diodes drops off, while the remaining voltage in the resistance circuit is converted into heat.
- the resistors of the resistance circuit and the LEDs thus form a voltage divider.
- the resistors of the resistance circuit are connected directly one behind the other.
- the resistors are divided between the two branches of the resistance circuit, so that the resistors are arranged in the direction of the current flow in front of and behind the light-emitting diodes.
- each of the branches can have at least two resistors connected in parallel.
- the electrical circuit board may comprise a rectifier bridge circuit as a diode circuit. This makes it possible to connect the circuit arrangement regardless of the polarity of the electrical system.
- the printed circuit board according to the invention preferably has the supply connections on the upper side of the printed circuit board.
- the areas are arranged according to the invention in diagonally opposite areas.
- the branches of the resistance circuit may also be arranged in opposite regions. Also, the areas with the branches of the resistance circuit may be diagonally opposite.
- the circuit board between the respective areas with the supply terminals and / or the branches of the resistance circuit one or more times provided with slots. These slots prevent leakage paths from forming on top of the PCB.
- Such a printed circuit board can be used in a luminaire with a lower housing part, an at least partially transparent upper housing part.
- the upper housing part and / or the lower housing part can then according to the invention have webs which rest on the surface of the printed circuit board or engage in the slots of the printed circuit board. The resting on the surface of the circuit board or engaging in the slots webs prevent moisture transport within the lamp, in which they at least partially seal off areas of the lamp against each other.
- the circuit arrangement according to the invention has a resistance circuit 1 made up of resistors 11, 12, 13, 14. Between the two inputs 15, and 16, which at the same time also form the supply terminals of the circuit arrangement, and the two outputs 25, 26 of the resistance circuit 1, a parallel connection of two resistors is provided. Between the input 15 and the output 25, the resistors 11, 12 are arranged in parallel, while the resistors 13, 14 are connected in parallel between the input 16 and the output 26.
- the outputs 15, 16 of the resistance circuit 1 also form inputs of a diode circuit 2 of diodes 21, 22, 23, 24 wherein the diodes 21, 22, 23, 24 are arranged in a rectifier bridge circuit. Outputs of the rectifier bridge circuit at the same time form the outputs 35, 36 of the diode circuit.
- the outputs 35, 36 of the diode circuit 2 are connected to each other via light emitting diodes 31, 32.
- the described arrangement of the resistance circuit 1, the diode circuit 2 and the light emitting diodes 31, 32 has the Advantage that in comparison to the over the LEDs 31, 32 sloping at the supply terminals 15, 16 applied high voltage does not occur again in the circuit. The possibility of creepage distances with a voltage drop in the amount of voltage at the supply terminals 15, 16 is thus reduced to a creepage distance between the supply terminals.
- Fig. 2 From the schematic representation of Fig. 2 is apparent as the component of a circuit arrangement according to Fig. 1 are arranged on a printed circuit board 4 according to the invention.
- the supply terminals 15, 16 are provided in diagonally opposite areas 41, 42 of the printed circuit board 4.
- the resistors 11, 12 and 13, 14 are mounted so that the shortest possible tracks between the supply terminals 15, 16 and the resistors 11, 12, 13, 14 are made. This is advantageous, since the conductor tracks cause the high voltages to be short and locally limited, which inhibits the formation of creepage distances. Further, the areas of the supply terminals 15, 16 and the resistors 11, 12, 13, 14 - ie the areas with the comparatively high voltages - through slots 43 in, the circuit board 4 from the remaining areas of the circuit board 4th demarcated. This also makes the formation of creepage distances difficult. In particular, the supply terminals 15, 16 are not short-circuited in a partial flooding of the printed circuit board 4 in vertical installation.
- the components are arranged so that no tracks are passed under the components.
- the copper surfaces have been dispensed with and supply terminals 15, 16 have been kept as small as possible, so that provide starting points for creepage distances only to a small extent.
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Description
Die vorliegende Erfindung betrifft eine Kfz-Leuchte und eine Leiterplatte für eine Kfz-Leuchte. Die Leiterplatte weist dabei die Merkmale des Oberbegriffs des Anspruchs 1 auf. Auf derartigen Leiterplatten sind in der Regel Schaltungsanordnungen angeordnet, wobei die Leiterplatten mit einem Gehäuseunterteil und einem zumindest teilweise transparenten Gehäuseoberteil die Kfz-Leuchte bilden.The present invention relates to a vehicle lamp and a circuit board for a motor vehicle lamp. The circuit board has the features of the preamble of
Die Diodenschaltung ist notwendig, um Spannungsspitzen zu verhindern, die die Leuchtdioden zerstören könnten. Ferner werden oftmals Diodenschaltungen vorgesehen, so dass die Leuchte unabhängig von der Polung der Leuchtdioden an die äußere Spannung des Bordnetzes (12 V oder 24 V Gleichspannung) angeschlossen werden kann. Die gleichgerichtete Spannung wird dann an den Ausgängen der Diodenschaltung abgegriffen und der Widerstandsschaltung zugeführt. Da die Betriebsspannung der Leuchtdioden, selbst wenn mehrere in Reihe geschaltet sind, im Regelfall wesentlich unter der Spannung des Bordnetzes eines Kfz liegt, werden die Leuchtdioden mit Widerständen der Widerstandsschaltung in Reihe geschaltet, um so die Spannung zwischen den Widerständen der Widerstandsschaltung und den Leuchtdioden aufzuteilen (Spannungsteiler). Derartige Schaltungsanordnungen, Leiterplatten mit solchen Schaltungsanordnungen und Leuchten sind aus dem Stand der Technik vielfach bekannt, zum Beispiel aus der Fig. 5 der Patentschrift
Die Schaltungsanordnungen werden im Kfz-Bereich oft als Schlussleuchten, Bremsleuchten oder Blinkleuchten eingesetzt. Die Verwendung der Schaltungsanordnung sowie der Leiterplatten mit einer solchen Schaltungsanordnung ist jedoch nicht auf die genannten Beispiele beschränkt.The circuit arrangements are often used in the automotive sector as tail lights, brake lights or indicators. However, the use of the circuit arrangement and the printed circuit boards with such a circuit arrangement is not limited to the examples mentioned.
Ein Problem bei den bekannten Kfz-Leuchten ergibt sich, wenn eine Leiterplatte mit der Schaltungsanordnung dem Einfluss von Feuchtigkeit oder sogar Nässe ausgesetzt ist. Dieses kann der Fall sein, wenn das Gehäuse der Leuchte aufgrund von Beschädigungen oder Alterung Undichtigkeiten aufweist, durch welche Niederschlagsfeuchtigkeit oder Spritzwasser in die Leuchte eindringt. Oftmals dringen mit der Feuchtigkeit Verunreinigungen wie Schmutz oder Salze in die Leuchte ein. In solchen Fällen können durch elektrochemische Korrosion und Elektrolyse Kriechstrecken auf der Leiterplatte entstehen. Des Weiteren können sich leitende Schlämme bilden, die geringe Potentialabstände auf der Leiterplatte, zum Beispiel zwischen Kontakten und Bauteilen, überbrücken. Ist die Leuchte geradezu mit einer salzhaltigen Lösung überflutet, können Ausgasungen, Funken und Lichtbögen sichtbar werden, die in seltenen Fällen bis zum Abbrennen der Leuchte führen können.A problem with the known automotive lamps arises when a printed circuit board is exposed to the circuitry the influence of moisture or even moisture. This may be the case if the housing of the lamp due to Damage or aging shows leaks through which precipitation moisture or water splashes into the luminaire. Often with the moisture impurities such as dirt or salts penetrate into the lamp. In such cases, electrochemical corrosion and electrolysis may cause creepage distances on the circuit board. Furthermore, conductive slurries can form which bridge small potential gaps on the printed circuit board, for example between contacts and components. If the luminaire is flooded with a saline solution, outgassing, sparks and electric arcs may be visible, which in rare cases may result in the luminaire burning off.
Der Erfindung liegt daher die Aufgabe zugrunde, die Leiterplatte und die Leuchte selbst, derart zu konstruieren, dass die Gefahr von Kriechstrecken weitgehend ausgeschlossen ist.The invention is therefore based on the object, the circuit board and the lamp itself to construct such that the risk of creepage distances is largely excluded.
Diese Aufgabe wird durch eine Leiterplatte mit den Merkmalen des Anspruchs 1 gelöst.
Der Vorteil gegenüber dem Stand der Technik ist folgender: Beim Stand der Technik liegt an den Versorgungsanschlüssen eine Spannung an, die der Spannung des Bordnetzes entspricht bzw. geringfügig geringer ist als die Spannung des Bordnetzes. Diese relativ zu der Betriebsspannung der Leuchtdioden hohe Spannung findet sich somit an mehreren Punkten der Schaltungsanordnung. Bei der erfindungsgemäßen Leiterplatte sind die Zweige der Widerstandsschaltung unmittelbar mit den Versorgungsanschlüssen verbunden. Zwischen den Ausgängen der Zweige der Widerstandsschaltung fällt lediglich eine Spannung ab, die im Wesentlichen der Betriebsspannung der Leuchtdioden entspricht. Bei der erfindungsgemäßen Leiterplatte findet man die hohe Spannung des Bordnetzes lediglich an den Versorgungsanschlüssen, d. h. an den Eingängen der Widerstandsschaltung. Es gibt somit weniger Punkte, zwischen denen ein vergleichsweise hoher Potentialunterschied besteht. Da sich im Fehlerfall aber für die Bildung von Kriechströmen insbesondere Kriechstrecken zwischen Punkten mit relativ hohen Potentialunterschieden eignen, ist durch die Reduzierung der Punkte der Schaltungsanordnung zwischen denen ein hoher Potentialunterschied besteht, eine geringe Wahrscheinlichkeit von Kriechströmen gegeben.This object is achieved by a printed circuit board with the features of
The advantage over the prior art is the following: In the prior art is at the supply terminals to a voltage that corresponds to the voltage of the electrical system or is slightly less than the voltage of the electrical system. This relative to the operating voltage of the LEDs high voltage is thus found at several points of the circuit. In the circuit board according to the invention, the branches of the resistance circuit are connected directly to the supply terminals. Between the outputs of the branches of the resistance circuit, only a voltage drops which essentially corresponds to the operating voltage of the light-emitting diodes. In the circuit board according to the invention, one finds the high voltage of the vehicle electrical system only at the supply terminals, ie at the inputs of the resistance circuit. There are thus fewer points between which there is a comparatively high potential difference. As in the case of an error but for the formation of leakage currents are particularly creepage distances between points with relatively high potential differences, is given by the reduction of the points of the circuit arrangement between which a high potential difference, a low probability of leakage currents.
Die Widerstandsschaltung dient, wie eingangs bereits beschrieben, dazu die Spannung des Bordnetzes so zu teilen, dass über den Leuchtdioden lediglich deren Betriebsspannung von abfällt, während die übrige Spannung in der Widerstandsschaltung in Wärme umgesetzt wird. Die Widerstände der Widerstandsschaltung und die Leuchtdioden bilden also einen Spannungsteiler. Dazu ist es bei den aus den Stand der Technik bekannten Schaltungsanordnungen üblich, dass die Widerstände der Widerstandsschaltung unmittelbar hintereinander geschaltet sind. Bei der erfindungsgemäßen Leiterplatte werden die Widerstände jedoch auf die zwei Zweige der Widerstandsschaltung aufgeteilt, so dass die Widerstände in Richtung des Stromflusses vor und hinter den Leuchtdioden angeordnet sind. Diese hat den Vorteil, dass in dem Falle, dass einer der Zweige wegen der Feuchtigkeit kurzgeschlossen wird, der andere Zweig der Widerstandsschaltung die Spannung weiterhin teilt. Die Spannung über den Leuchtdioden erhöht sich dann nur soweit, dass Schaltungsanordnung zunächst funktionstüchtig bleibt. Erfindungsgemäß kann jeder der Zweige zumindest zwei parallel geschaltete Widerstände aufweisen.The resistance circuit serves, as already described, to divide the voltage of the vehicle electrical system so that only the operating voltage of the light-emitting diodes drops off, while the remaining voltage in the resistance circuit is converted into heat. The resistors of the resistance circuit and the LEDs thus form a voltage divider. For this it is common in the circuit arrangements known from the prior art that the resistors of the resistance circuit are connected directly one behind the other. In the circuit board according to the invention, however, the resistors are divided between the two branches of the resistance circuit, so that the resistors are arranged in the direction of the current flow in front of and behind the light-emitting diodes. This has the advantage that in the event that one of the branches is shorted because of the moisture, the other branch of the resistance circuit will still share the voltage. The voltage across the LEDs then increases only so far that circuitry initially remains functional. According to the invention, each of the branches can have at least two resistors connected in parallel.
Gemäß der Erfindung kann die elektrische Leiterplatte eine Gleichrichterbrückenschaltung als Diodenschaltung aufweisen. Damit ist möglich, die Schaltungsanordnung unabhängig von der Polung an das Bordnetz anzuschließen.According to the invention, the electrical circuit board may comprise a rectifier bridge circuit as a diode circuit. This makes it possible to connect the circuit arrangement regardless of the polarity of the electrical system.
Die erfindungsgemäße Leiterplatte weist die Versorgungsanschlüsse vorzugsweise auf der Oberseite der Leiterplatte auf. Die Bereiche sind gemäß der Erfindung in diagonal gegenüberliegenden Bereichen angeordnet.The printed circuit board according to the invention preferably has the supply connections on the upper side of the printed circuit board. The areas are arranged according to the invention in diagonally opposite areas.
Die Zweige der Widerstandsschaltung können ebenfalls in gegenüberliegenden Bereichen angeordnet sein. Auch die Bereiche mit den Zweigen der Widerstandsschaltung können diagonal gegenüber liegen.The branches of the resistance circuit may also be arranged in opposite regions. Also, the areas with the branches of the resistance circuit may be diagonally opposite.
In einer besonders bevorzugten Ausführung ist die Leiterplatte zwischen den jeweiligen Bereichen mit den Versorgungsanschlüssen und/oder den Zweigen der Widerstandsschaltung ein oder mehrfach mit Schlitzen versehen. Diese Schlitze verhindern, dass sich Kriechstromstrecken auf der Oberseite der Leiterplatte bilden können.In a particularly preferred embodiment, the circuit board between the respective areas with the supply terminals and / or the branches of the resistance circuit one or more times provided with slots. These slots prevent leakage paths from forming on top of the PCB.
Eine derartige Leiterplatte kann in einer Leuchte mit einem Gehäuseunterteil, einem zumindest teilweise transparenten Gehäuseoberteil eingesetzt sein. Das Gehäuseoberteil und/oder das Gehäuseunterteil können dann gemäß der Erfindung Stege aufweisen, die auf der Oberfläche der Leiterplatte aufliegen oder in die Schlitze der Leiterplatte eingreifen. Die auf der Oberfläche der Leiterplatte aufliegenden oder in die Schlitze eingreifenden Stege unterbinden einen Feuchtigkeitstransport innerhalb der Leuchte, in dem sie Bereiche der Leuchte zumindest teilweise gegeneinander abschotten.Such a printed circuit board can be used in a luminaire with a lower housing part, an at least partially transparent upper housing part. The upper housing part and / or the lower housing part can then according to the invention have webs which rest on the surface of the printed circuit board or engage in the slots of the printed circuit board. The resting on the surface of the circuit board or engaging in the slots webs prevent moisture transport within the lamp, in which they at least partially seal off areas of the lamp against each other.
Weitere Merkmale und Vorteile der vorliegenden Erfindung werden deutlich anhand der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele unter Bezugnahme auf die beiliegenden Abbildungen. Darin zeigen
- Fig. 1
- einen Schaltplan der erfindungsgemäßen Schaltungsanordnung und
- Fig. 2
- eine schematischen Darstellung einer Leiterplatte.
- Fig. 1
- a circuit diagram of the circuit arrangement according to the invention and
- Fig. 2
- a schematic representation of a printed circuit board.
Zunächst wird auf
Die Ausgänge 15, 16 der Widerstandsschaltung 1 bilden zugleich Eingänge einer Diodenschaltung 2 aus Dioden 21, 22, 23, 24 wobei die Dioden 21, 22, 23, 24 in einer Gleichrichterbrückenschaltung angeordnet sind. Ausgänge der Gleichrichterbrückenschaltung bilden dabei zugleich die Ausgänge 35, 36 der Diodenschaltung.The
Die Ausgänge 35, 36 der Diodenschaltung 2 sind über Leuchtdioden 31, 32 miteinander verbunden.The
Die beschriebene Anordnung der Widerstandsschaltung 1, der Diodenschaltung 2 und der Leuchtdioden 31, 32 hat den den Vorteil, dass die im Vergleich zu der über den Leuchtdioden 31, 32 abfallende an den Versorgungsanschlüssen 15, 16 anliegende hohe Spannung kein weiteres Mal in der Schaltung auftritt. Die Möglichkeit von Kriechstrecken mit einem Spannungsabfall in Höhe der Spannung an den Versorgungsanschlüssen 15, 16 ist damit auf eine Kriechstrecke zwischen den Versorgungsanschlüssen reduziert.The described arrangement of the
Durch die Aufteilung des für die Reduzierung der Spannung an den Versorgungsanschlüssen notwendige ohmschen Widerstands auf zwei (zwar unter Zwischenschaltung der Diodenschaltung 2 und der Leuchtdioden 31, 32) hintereinander geschaltete Widerstandzweige 11, 12 bzw. 13, 14 an Stelle eines einzigen Vorwiderstands - wie aus dem Stand der Technik bekannt - ist, dass bei Kurzschluss eines Widerstandszweigs die Spannung zumindest wegen des anderen Widerstansdzweigs reduziert wird.By dividing the necessary for the reduction of the voltage at the supply terminals ohmic resistance to two (although with the interposition of the
Aus der schematischen Darstellung der
Unmittelbar in der Nähe der Versorgungsanschlüsse 15, 16 sind die Widerstände 11, 12 bzw. 13, 14 angebracht, so dass möglichst kurze Leiterbahnen zwischen den Versorgungsanschlüssen 15, 16 und den Widerständen 11, 12, 13, 14 bestehen. Dieses ist vorteilhaft, da so die Leiterbahnen die hohe Spannungen führen kurz und lokal begrenzt sind, was die Bildung von Kriechstrecken hemmt. Ferner sind die Bereiche der Versorgungsanschlüsse 15, 16 und der Widerstände 11, 12, 13, 14 - also die Bereiche mit den vergleichsweise hohen Spannungen - durch Schlitze 43 in,der Leiterplatte 4 von den übrigen Bereichen der Leiterplatte 4 abgegrenzt. Auch hierdurch wird die Bildung von Kriechstrecken erschwert. Insbesondere werden die Versorgungsanschlüsse 15, 16 bei einer teilweisen Überflutung der Leiterplatte 4 in senkrechtem Einbau nicht kurzgeschlossen.Immediately in the vicinity of the
Darüber hinaus sind die Bauelemente so angeordnet, dass keine Leiterbahnen unter den Bauelementen hindurch geführt werden. Weiter sind die Kupferflächen verzichtet worden sowie Versorgungsanschlüsse 15, 16 sind möglichst klein gehalten worden, so dass sich hier nur im geringen Maße Ausgangspunkte für Kriechstrecken bieten.In addition, the components are arranged so that no tracks are passed under the components. Next, the copper surfaces have been dispensed with and
Claims (6)
- Printed circuit board with an electric circuit arrangement for a motor vehicle lamp with light-emitting diodes,
Wherein the circuit arrangement has two supply connections, one resistive circuit (1) comprising two arms with one input each and one output each and one or more light-emitting diodes (31, 32),
the arms being switched in series,
wherein the circuit arrangement has a diode circuit,
wherein the light-emitting diodes (31, 32) are connected to outputs of the diode circuit (2), characterized in that
each input (15, 16) of an arm of the resistive circuit (1) is directly connected to a supply connection, that each output of an arm of the resistive circuit (1) is connected to one input (25, 26) of the diode circuit (2) and,
that the supply connections and the arms of the resistive circuit (1) are arranged in diagonally opposite regions (41, 42),
that the printed circuit board (4) is provided with one or more slots (43) between the regions (41, 42) with the supply connections and the arms of the resistance circuit (1). - Printed circuit board according to Claim 1, characterized in that each of the arms has at least two resistors switched in parallel (11, 12; 13, 14).
- Printed circuit board according to one of the Claims 1 to 2, characterized in that the diode circuit (2) has two arms switched in parallel, which are connected to an input (25, 26) on one side and with an output of the direct circuit (2) on the other side, wherein a diode is arranged in one arm, which is connected in the same direction as the light-emitting diodes (31, 32).
- Printed circuit board according to one of the Claims 1 to 3, characterized in that the diode circuit (2) is a rectifier bridge circuit (21, 22; 23, 24).
- Printed circuit board according to one of the Claims 1 to 4, characterized in that the supply connections are arranged on one side of the printed circuit board (4).
- Lamp with a lower housing part, an at least partially transparent upper housing part and a printed circuit board according to one of the claims 1 to 5, characterized in that the upper housing part and/ or the lower housing part have webs, which rest on the surface of the printed circuit board (4) or engage in the slots (43) of the printed circuit board (4)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10140275A DE10140275A1 (en) | 2001-08-16 | 2001-08-16 | Motor vehicle light, circuit arrangement for a motor vehicle light and circuit board for a motor vehicle light |
| DE10140275 | 2001-08-16 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1289341A2 EP1289341A2 (en) | 2003-03-05 |
| EP1289341A3 EP1289341A3 (en) | 2005-09-14 |
| EP1289341B1 true EP1289341B1 (en) | 2018-08-29 |
Family
ID=7695685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02016583.3A Expired - Lifetime EP1289341B1 (en) | 2001-08-16 | 2002-07-25 | Automotive lighting device with associated circuit and printed circuit board |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1289341B1 (en) |
| DE (1) | DE10140275A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7458705B2 (en) | 2003-06-20 | 2008-12-02 | Yazaki Corporation | LED illumination device |
| DE102010014948A1 (en) | 2010-04-14 | 2011-10-20 | Hella Kgaa Hueck & Co. | Arrangement for energetic supply of light unit e.g. organic LED, for vehicle, has structure component comprising coil with lead lines, where self-contained housing and structure component are galvanically separated |
| DE102011112821B4 (en) | 2011-09-12 | 2013-06-27 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Electric motor, in particular radiator fan motor |
| KR102143222B1 (en) * | 2013-12-27 | 2020-08-11 | 엘지디스플레이 주식회사 | Wireless display sink device |
| DE102015221688A1 (en) | 2015-11-05 | 2017-05-11 | Osram Gmbh | Method for reducing conductor spacing in electronic printed circuit boards and electronic printed circuit board with reduced distances between printed conductors |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0315905A2 (en) * | 1987-11-07 | 1989-05-17 | Werner Müller | Electroluminescent device |
| US5038255A (en) * | 1989-09-09 | 1991-08-06 | Stanley Electric Co., Ltd. | Vehicle lamp |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4965457A (en) * | 1989-02-17 | 1990-10-23 | Avi Wrobel | Removable panel illuminating module |
| US5404282A (en) * | 1993-09-17 | 1995-04-04 | Hewlett-Packard Company | Multiple light emitting diode module |
| US5699231A (en) * | 1995-11-24 | 1997-12-16 | Xerox Corporation | Method of packaging high voltage components with low voltage components in a small space |
| WO1999020085A1 (en) * | 1997-10-10 | 1999-04-22 | Se Kang Electric Co., Ltd. | Electric lamp circuit and structure using light emitting diodes |
| GB2349519A (en) * | 1999-04-30 | 2000-11-01 | Apollo Fire Detectors Ltd | Bipolar LED indicator; fire alarm systems |
-
2001
- 2001-08-16 DE DE10140275A patent/DE10140275A1/en not_active Withdrawn
-
2002
- 2002-07-25 EP EP02016583.3A patent/EP1289341B1/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0315905A2 (en) * | 1987-11-07 | 1989-05-17 | Werner Müller | Electroluminescent device |
| US5038255A (en) * | 1989-09-09 | 1991-08-06 | Stanley Electric Co., Ltd. | Vehicle lamp |
Non-Patent Citations (2)
| Title |
|---|
| RUDOLF F. GRAF: "Modern Dictionary of Electronics", 1999, NEWNES, ISBN: 0-7506-9866-7, pages: 158 - 158 * |
| TIM WILLIAMS: "The Circuit Designer's Companion", 2005, NEWNES, Great Britain, ISBN: 0-7506-6370-7, pages: 294 - 298 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1289341A2 (en) | 2003-03-05 |
| EP1289341A3 (en) | 2005-09-14 |
| DE10140275A1 (en) | 2003-03-06 |
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