EP0915451A2 - Traffic signalling device for selfilluminated display - Google Patents
Traffic signalling device for selfilluminated display Download PDFInfo
- Publication number
- EP0915451A2 EP0915451A2 EP98118933A EP98118933A EP0915451A2 EP 0915451 A2 EP0915451 A2 EP 0915451A2 EP 98118933 A EP98118933 A EP 98118933A EP 98118933 A EP98118933 A EP 98118933A EP 0915451 A2 EP0915451 A2 EP 0915451A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- holding device
- light
- traffic signaling
- emitting diode
- opening
- 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
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
- G09F13/0418—Constructional details
- G09F13/0472—Traffic signs
Definitions
- the invention relates to a traffic signaling device for self-illuminating displays according to the Preamble of claim 1.
- Incandescent or halogen lamps are used for traffic signaling devices with self-illuminating displays.
- EP 0 467 034 there is, for example, a display device known for a variable message sign in which any advertisement, those from at least one non-changeable part of the ad and any display part that can be selected are shown.
- the display part is by means of a processor-controlled matrix field display elements, each display element carried out by an illuminated optical fiber is.
- the illuminated optical fibers are replaced by halogen lamps illuminated. This method is disadvantageous on the one hand the short lifespan of halogen lamps and on the other others their high energy consumption.
- a signal lamp is known from EP 0 694 894, at least is partially provided with LEDs that inside the signal lamp from a first to at least a second Beam direction are tiltable and stored by adjusting discs can be positioned in groups.
- the intended Holding device is, however, quite complicated and not suitable for easy assembly.
- a preferred embodiment results from claim 3 by a toothing on the holding device, which also a particularly simple assembly of the holding device guaranteed.
- a further improvement in the thermal conductivity of the holding device is achieved in that according to claim 4 the LED through a curable thermal paste in the Holding device is attached.
- a particularly inexpensive embodiment results from a optical imaging device from a transparent Plastic such as polymethacrylate (PMMA, trade name Plexiglas) or polycarbonate (PC, trade name Makrolon) according to claim 6.
- a transparent Plastic such as polymethacrylate (PMMA, trade name Plexiglas) or polycarbonate (PC, trade name Makrolon) according to claim 6.
- the holding device and the Front panel are made of metallic materials.
- FIG. 1 shows a section of a front panel 1 (for example made of aluminum) of a signaling device, for example a variable message sign or one Light signal system shown, through a hole 2 in the front panel 1, a light emitting diode 3 emits its light.
- the LED 3 is in a tubular according to the invention Holding device 4 attached so that between the side walls of the light emitting diode 3 and the holding device 4 good heat dissipation contact is ensured.
- the Holding device 4 can for example be made of a metallic Material or from a plastic with good thermal conductivity be made.
- the LED 3 is there attached in the holding device 4 so that the Light emitting diode 3 emits light through a first opening (Light exit opening 5) of the holding device 4 through the Front panel 1 is emitted and the LED 3 through a second opening of the holding device 4 (Contact opening 6) is contacted.
- the cathode connection 7 and the anode terminal 8 of the light emitting diode 3 are there connected to a control unit 11 via cable connections 10, which according to the ads to be displayed the LEDs 3 switches on and off.
- the anode connection 8 and the cathode connection 7 are together with the cable connections 10 using a curable thermal paste 12 firmly connected, the thermal paste 12 is both a good Heat dissipation as well as a secure attachment of the LED 3 ensures in the holding device 4.
- the holding device 4 In the direction the light exit opening 5, the holding device 4 is outside provided with a thread 13, which in a corresponding Thread in the hole 2 of the front panel 1 is inserted. This makes it particularly easy to assemble, if necessary again detachable connection between the front panel 1 and the Holding device 4 achieved.
- an optical imaging device in the holding device 4 14 provided, with the help of the radiation characteristic adapts to the local conditions, so that the display is well recognized by all road users becomes.
- the optical imaging device 14 is there made of glass or an inexpensive transparent plastic manufactured such as polymethacrylate (PMMA, trade name Plexiglas) or polycarbonate (PC, trade name Makrolon).
- FIG. 8 is a conductive connection with the Holding device 4, which in this example made of metallic Material is made.
- the Holding device 4 Through a conductive connection between the holding device 4 and the likewise a metallic material existing front panel 1 leaves a particularly simple contacting of the light emitting diode 3 by using a cable connection 15 to the front panel 1 is placed from the control unit 11. This allows the wiring effort reduce by a factor of two.
- a connection (for example the ground connection) of all in the signaling device provided LEDs 3 is thus together via the front panel 1 and the holding device 4 connected to the control unit 11.
- the holding device 4 has a toothing 9, which is a particularly simple assembly guaranteed with the front panel.
- Figure 3 is shown schematically and simplified how a holding device 4 without an optical imaging device is arranged.
- Figure 4 shows an embodiment in which instead of Light-emitting diode 3 is a light-emitting diode 16 on a semiconductor chip is arranged in a holding device 4.
- a special one matched to the light emitting diode 16 on the semiconductor chip optical imaging device 17 is provided in the light exit opening 5 of the holding device 4 .
- the contacting is carried out as in the previous embodiments via the cathode connection 7 and the anode connection 8 and cable connections 10 to the control unit 11. Also in this embodiment it is possible to make a connection through an electrical Contact via the holding device 4 to the front panel 1 to perform a reduced number of cable connections to achieve.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Road Signs Or Road Markings (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Traffic Control Systems (AREA)
- Audible And Visible Signals (AREA)
Abstract
Description
Die Erfindung bezieht sich auf eine verkehrstechnische Signalisierungseinrichtung
für selbstleuchtende Anzeigen gemaß dem
Oberbegriff des Patentanspruches 1.The invention relates to a traffic signaling device
for self-illuminating displays according to the
Preamble of
Für verkehrstechnische Signalisierungseinrichtungen mit selbstleuchtenden Anzeigen, wie Lichtsignalanlagen an Kreuzungspunkten oder Wechselverkehrszeichen werden heutzutage Glühlampen oder Halogenlampen verwendet.For traffic signaling devices with self-illuminating displays, such as traffic lights at intersections or variable message signs are nowadays Incandescent or halogen lamps are used.
Aus EP 0 467 034 ist beispielsweise eine Anzeigevorrichtung für ein Wechselverkehrszeichen bekannt, bei dem beliebige Anzeigen, die aus mindestens einem nicht veränderbaren Anzeigenteil und einem beliebig wählbaren Anzeigenteil zusammensetzbar sind, dargestellt werden. Dabei sind für jeden nicht veränderbaren Anzeigenteil getrennte, beleuchtbare Bündel von Lichtleitfasern vorgesehen, deren freie Enden entsprechend dem zugeordneten, nicht veränderbaren Anzeigenteil verteilt in einer Anzeigetafel angeordnet sind. Der beliebig wählbare Anzeigenteil ist mittels eines prozessorgesteuerten Matrixfeldes von Anzeigenelementen darstellbar, wobei jedes Anzeigeelement durch eine beleuchtete Lichtleitfaser ausgeführt ist. Die beleuchteten Lichtleitfasern werden dabei durch Halogenlampen beleuchtet. Nachteilig bei diesem Verfahren ist zum einen die geringe Lebensdauer von Halogenlampen und zum anderen deren hoher Energieverbrauch.From EP 0 467 034 there is, for example, a display device known for a variable message sign in which any advertisement, those from at least one non-changeable part of the ad and any display part that can be selected are shown. There are not for everyone changeable display part separate, illuminable bundle of Optical fibers are provided, the free ends accordingly distributed to the assigned, unchangeable part of the ad are arranged in a display board. The freely selectable The display part is by means of a processor-controlled matrix field display elements, each display element carried out by an illuminated optical fiber is. The illuminated optical fibers are replaced by halogen lamps illuminated. This method is disadvantageous on the one hand the short lifespan of halogen lamps and on the other others their high energy consumption.
Daher sind vereinzelt auch bereits Leuchtdioden für den Einsatz in verkehrstechnischen Signalisierungseinrichtungen vorgesehen.For this reason, light-emitting diodes are already used occasionally provided in traffic signaling devices.
Aus EP 0 694 894 ist eine Signalleuchte bekannt, die zumindest teilweise mit Leuchtdioden versehen ist, die innerhalb der Signalleuchte von einer ersten zu zumindest einer zweiten Abstrahlrichtung abkippbar gelagert sind und durch Verstellscheiben gruppenweise positioniert werden können. Die vorgesehene Haltevorrichtung ist allerdings recht kompliziert und nicht für eine einfache Montage geeignet.A signal lamp is known from EP 0 694 894, at least is partially provided with LEDs that inside the signal lamp from a first to at least a second Beam direction are tiltable and stored by adjusting discs can be positioned in groups. The intended Holding device is, however, quite complicated and not suitable for easy assembly.
Es ist daher Aufgabe der Erfindung, eine verkehrstechnische Signalisierungseinrichtung anzugeben, die gegenüber den bekannten Signalisierungseinrichtungen einen robusteren Aufbau und eine längere Lebensdauer aufweist.It is therefore an object of the invention to provide a traffic engineering To indicate signaling device that compared to the known Signaling devices a more robust structure and has a longer lifespan.
Die Aufgabe wird erfindungsgemäß mit einer Signalisierungseinrichtung
der eingangs genannten Art mit den kennzeichnenden
Merkmalen des Patentanspruches 1 gelöst.The object is achieved with a signaling device
of the type mentioned above with the characteristic
Features of
Durch eine an die Leuchtdioden angepaßte Haltevorrichtung wird zum einen eine gute Wärmeableitung erreicht, und zum anderen ergeben sich durch die angepaßten Bohrungen in der Frontplatte der Signalisierungseinrichtungen eine einfache Montage und ein einfacher Wechsel von defekten Leuchtdioden.By a holding device adapted to the light emitting diodes good heat dissipation is achieved on the one hand, and on the other result from the adapted holes in the Front plate of the signaling devices a simple Assembly and easy replacement of defective LEDs.
In einer bevorzugten Ausgestaltung nach Patentanspruch 2 ergibt
sich ein besonders einfacher Wechsel oder eine besonders
einfache Montage durch ein Gewinde der Haltevorrichtung, welches
in ein entsprechend vorgeformte Bohrung der Frontplatte
eingepaßt wird.In a preferred embodiment according to
Eine bevorzugte Ausgestaltung ergibt sich nach Patentanspruch
3 durch eine Verzahnung an der Haltevorrichtung, die ebenfalls
eine besonders einfache Montage der Haltevorrichtung
gewährleistet.A preferred embodiment results from
Eine weitere Verbesserung der Wärmeleitfähigkeit der Haltevorrichtung
wird dadurch erzielt, daß nach Patentanspruch 4
die Leuchtdiode durch eine aushärtbare Wärmeleitpaste in der
Haltevorrichtung befestigt ist. A further improvement in the thermal conductivity of the holding device
is achieved in that according to
Nach Patentanspruch 5 ergibt sich eine Verbesserung der optischen
Abstrahlungseigenschaften durch eine optische Abbildungseinrichtung,
die in der frontseitigen Öffnung der Haltevorrichtung
vorgesehen ist.According to
Eine besonders preiswerte Ausgestaltung ergibt sich durch eine
optische Abbildungseinrichtung aus einem transparenten
Kunststoff wie beispielsweise Polymethacrylat (PMMA, Handelsname
Plexiglas) oder Polycarbonat (PC, Handelsname Makrolon)
nach Patentanspruch 6.A particularly inexpensive embodiment results from a
optical imaging device from a transparent
Plastic such as polymethacrylate (PMMA, trade name
Plexiglas) or polycarbonate (PC, trade name Makrolon)
according to
Besonders gute Wärmeleiteigenschaften werden dadurch ausgenutzt,
daß nach Patentanspruch 7 die Haltevorrichtung und die
Frontplatte aus metallischen Materialien hergestellt sind.Particularly good thermal conductivity properties are exploited,
that according to
Dadurch ergibt sich auch nach Patentanspruch 8 die bevorzugte
Ausführungsform, in der nur ein Anschluß der Leuchtdiode direkt
kontaktiert wird, und der andere Anschluß
(beispielsweise der Masseanschluß) elektrisch leitend mit der
Haltevorrichtung verbunden, die Haltevorrichtung elektrisch
leitend mit der Frontplatte verbunden sowie die Frontplatte
über eine Kabelverbindung mit dem Steuergerät verbunden ist.
Dadurch wird der Verdrahtungsaufwand reduziert.This results in the preferred also according to
Besondere Ausführungsformen sind in den Figuren der Zeichnung
dargestellt. Dabei zeigen
In Figur 1 ist ein Ausschnitt einer Frontplatte 1
(beispielsweise aus Aluminium) einer Signalisierungseinrichtung,
beispielsweise eines Wechselverkehrszeichens oder einer
Lichtsignalanlage dargestellt, wobei durch eine Bohrung 2 in
der Frontplatte 1 eine Leuchtdiode 3 ihr Licht emittiert.
Die Leuchtdiode 3 ist dabei in einer erfindungsgemäßen rohrförmigen
Haltevorrichtung 4 derart befestigt, daß zwischen
den Seitenwänden der Leuchtdiode 3 und der Haltevorrichtung 4
eine guter Kontakt zur Wärmeableitung sichergestellt ist. Die
Haltevorrichtung 4 kann beispielsweise aus einem metallischen
Material oder auch aus einem Kunststoff mit guten Wärmeleiteigenschaften
gefertigt sein. Die Leuchtdiode 3 ist dabei
derart in der Haltevorrichtung 4 befestigt, daß das von der
Leuchtdiode 3 emittierte Licht durch eine erste Öffnung
(Lichtaustrittsöffnung 5) der Haltevorrichtung 4 durch die
Frontplatte 1 abgestrahlt wird und die Leuchtdiode 3 durch
eine zweite Öffnung der Haltevorrichtung 4
(Kontaktierungsöffnung 6) kontaktiert wird. Der Kathodenanschluß
7 und der Anodenanschluß 8 der Leuchtdiode 3 sind dabei
über Kabelverbindungen 10 an ein Steuergerät 11 angeschlossen,
welches entsprechend der anzuzeigenden Anzeigen
die Leuchtdioden 3 ein- und ausschaltet. Der Anodenanschluß 8
und der Kathodenanschluß 7 sind gemeinsam mit den Kabelverbindungen
10 mit Hilfe einer aushärtbaren Wärmeleitpaste 12
fest verbunden, wobei die Wärmeleitpaste 12 sowohl einen gute
Wärmeableitung als auch eine sichere Befestigung der Leuchtdiode
3 in der Haltevorrichtung 4 sicherstellt. In Richtung
der Lichtaustrittsöffnung 5 ist die Haltevorrichtung 4 außen
mit einem Gewinde 13 versehen, welches in ein entsprechendes
Gewinde in der Bohrung 2 der Frontplatte 1 eingesetzt ist.
Dadurch wird eine besonders gut montierbare, gegebenenfalls
wieder lösbare Verbindung zwischen der Frontplatte 1 und der
Haltevorrichtung 4 erzielt. Zur Verbesserung der Abstrahlcharakteristik
ist in der Haltevorrichtung 4 eine optische Abbildungseinrichtung
14 vorgesehen, mit deren Hilfe die Abstrahlungscharakteristik
an die örtlichen Gegebenheiten anpaßt,
damit die Anzeige von allen Verkehrsteilnehmern gut erkannt
wird. Die optische Abbildungseinrichtung 14 ist dabei
aus Glas oder aus einem preiswerten transparenten Kunststoff
gefertigt wie beispielsweise Polymethacrylat (PMMA, Handelsname
Plexiglas) oder Polycarbonat (PC, Handelsname Makrolon).FIG. 1 shows a section of a front panel 1
(for example made of aluminum) of a signaling device,
for example a variable message sign or one
Light signal system shown, through a
In Figur 2 ist eine weitere Ausführungsform dargestellt, bei
der der Anodenanschluß 8 eine leitende Verbindung mit der
Haltevorrichtung 4 aufweist, die in diesem Beispiel aus metallischem
Material gefertigt ist. Durch eine leitende Verbindung
zwischen der Haltevorrichtung 4 und der ebenfalls aus
einem metallischen Material bestehenden Frontplatte 1 läßt
sich eine besonders einfache Kontaktierung der Leuchtdiode 3
erreichen, indem eine Kabelverbindung 15 zur Frontplatte 1
vom Steuergerät 11 aus gelegt ist. Dadurch läßt sich der Verkabelungsaufwand
um einen Faktor zwei reduzieren. Ein Anschluß
(beispielsweise der Masseanschluß) aller in der Signalisierungseinrichtung
vorgesehenen Leuchtdioden 3 ist somit
gemeinsam über die Frontplatte 1 und die Haltevorrichtung 4
mit dem Steuergerät 11 verbunden. Die Haltevorrichtung 4
weist eine Verzahnung 9 auf, die eine besonders einfache Montage
mit der Frontplatte gewährleistet.A further embodiment is shown in FIG
the
In Figur 3 ist schematisch und vereinfacht dargestellt, wie
eine Haltevorrichtung 4 ohne optische Abbildungseinrichtung
angeordnet ist.In Figure 3 is shown schematically and simplified how
a
Figur 4 zeigt eine Ausführungsform, bei der anstelle der
Leuchtdiode 3 eine Leuchtdiode 16 auf einem Halbleiterchip
in einer Haltevorrichtung 4 angeordnet ist. In der Lichtaustrittsöffnung
5 der Haltevorrichtung 4 ist dabei eine speziell
an die Leuchtdiode 16 auf dem Halbleiterchip angepaßte
optische Abbildungseinrichtung 17 vorgesehen. Die Kontaktierung
erfolgt wie bei den vorangegangenen Ausführungsformen
über den Kathodenanschluß 7 und den Anodenanschluß 8 und Kabelverbindungen
10 zum Steuergerät 11. Auch bei dieser Ausführungsform
ist es möglich, einen Anschluß durch einen elektrischen
Kontakt über die Haltevorrichtung 4 zur Frontplatte
1 auszuführen, um eine verringerte Anzahl an Kabelverbindungen
zu erzielen.Figure 4 shows an embodiment in which instead of
Light-
Claims (8)
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
dadurch gekennzeichnet,
characterized,
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19749129 | 1997-11-06 | ||
DE19749129 | 1997-11-06 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0915451A2 true EP0915451A2 (en) | 1999-05-12 |
EP0915451A3 EP0915451A3 (en) | 2003-11-05 |
EP0915451B1 EP0915451B1 (en) | 2005-07-20 |
Family
ID=7847861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98118933A Expired - Lifetime EP0915451B1 (en) | 1997-11-06 | 1998-10-07 | Traffic signalling device for selfilluminated display |
Country Status (4)
Country | Link |
---|---|
US (1) | US6144311A (en) |
EP (1) | EP0915451B1 (en) |
AT (1) | ATE300080T1 (en) |
DE (1) | DE59812938D1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10140427A1 (en) * | 2001-08-17 | 2003-03-06 | Dambach Werke Gmbh | Indicating device for road or street traffic comprises a plurality of indicating points distributed over an indicator board, with each indicating point comprising several light sources and lens elements |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080074861A1 (en) * | 2006-09-23 | 2008-03-27 | Hon Hai Precision Industry Co., Ltd. | Indicator device of a computer front panel |
US7764195B2 (en) * | 2008-04-09 | 2010-07-27 | Glover Benjamin A | Three-arrow LED traffic signal system |
US9978270B2 (en) | 2014-07-28 | 2018-05-22 | Econolite Group, Inc. | Self-configuring traffic signal controller |
Citations (4)
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US4398240A (en) * | 1978-05-19 | 1983-08-09 | Savage John Jun | Lens cap holder for attachment to circuit boards |
US4851832A (en) * | 1986-10-06 | 1989-07-25 | Herbert Graf | Traffic control device for street vehicles |
DE19528459A1 (en) * | 1995-08-03 | 1997-02-13 | Garufo Gmbh | LED display apparatus with carrier plate - has heat carrier plates connected to transfer heat from carrier plate to heat dissipation surface |
US5640407A (en) * | 1995-04-28 | 1997-06-17 | Accu-Sort Systems, Inc. | Temperature regulating laser diode assembly |
Family Cites Families (11)
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US3560967A (en) * | 1968-01-04 | 1971-02-02 | Robertshaw Controls Co | Lamp filter and lampholder assembly |
US3918053A (en) * | 1972-07-03 | 1975-11-04 | Dialight Corp | Digital display |
US3887803A (en) * | 1974-05-28 | 1975-06-03 | Savage John Jun | Light emitting diode device |
FR2551242B1 (en) * | 1983-08-30 | 1986-01-17 | Griffon Gravure Sarl | INFORMATION PANEL WITH LIGHTING, PARTICULARLY FOR CONTROL AND SYNOPTIC |
WO1986002985A1 (en) * | 1984-11-15 | 1986-05-22 | Japan Traffic Management Technology Association | Signal light unit having heat dissipating function |
DE4022650C1 (en) * | 1990-07-17 | 1991-07-04 | Dambach-Werke Gmbh, 7560 Gaggenau, De | |
ES2135619T3 (en) * | 1994-07-22 | 1999-11-01 | Siemens Schweiz Ag | SIGNALING LIGHT. |
US5898381A (en) * | 1996-06-19 | 1999-04-27 | Traffic Technology, Inc. | LED traffic light and method of manufacture and use thereof |
US5782555A (en) * | 1996-06-27 | 1998-07-21 | Hochstein; Peter A. | Heat dissipating L.E.D. traffic light |
US5785418A (en) * | 1996-06-27 | 1998-07-28 | Hochstein; Peter A. | Thermally protected LED array |
US5909182A (en) * | 1996-12-02 | 1999-06-01 | Alstom Signaling Inc. | Vandal resistant light signal unit |
-
1998
- 1998-10-07 AT AT98118933T patent/ATE300080T1/en active
- 1998-10-07 EP EP98118933A patent/EP0915451B1/en not_active Expired - Lifetime
- 1998-10-07 DE DE59812938T patent/DE59812938D1/en not_active Expired - Lifetime
- 1998-11-06 US US09/187,148 patent/US6144311A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4398240A (en) * | 1978-05-19 | 1983-08-09 | Savage John Jun | Lens cap holder for attachment to circuit boards |
US4851832A (en) * | 1986-10-06 | 1989-07-25 | Herbert Graf | Traffic control device for street vehicles |
US5640407A (en) * | 1995-04-28 | 1997-06-17 | Accu-Sort Systems, Inc. | Temperature regulating laser diode assembly |
DE19528459A1 (en) * | 1995-08-03 | 1997-02-13 | Garufo Gmbh | LED display apparatus with carrier plate - has heat carrier plates connected to transfer heat from carrier plate to heat dissipation surface |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10140427A1 (en) * | 2001-08-17 | 2003-03-06 | Dambach Werke Gmbh | Indicating device for road or street traffic comprises a plurality of indicating points distributed over an indicator board, with each indicating point comprising several light sources and lens elements |
DE10140427B4 (en) * | 2001-08-17 | 2004-11-11 | Dambach-Werke Gmbh | Light indicator for road traffic |
Also Published As
Publication number | Publication date |
---|---|
ATE300080T1 (en) | 2005-08-15 |
EP0915451B1 (en) | 2005-07-20 |
US6144311A (en) | 2000-11-07 |
EP0915451A3 (en) | 2003-11-05 |
DE59812938D1 (en) | 2005-08-25 |
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