EP2350522B1 - Led lighting device, in particular for tunnels - Google Patents

Led lighting device, in particular for tunnels Download PDF

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Publication number
EP2350522B1
EP2350522B1 EP09774924.6A EP09774924A EP2350522B1 EP 2350522 B1 EP2350522 B1 EP 2350522B1 EP 09774924 A EP09774924 A EP 09774924A EP 2350522 B1 EP2350522 B1 EP 2350522B1
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EP
European Patent Office
Prior art keywords
illuminating device
base body
leds
lighting device
expansion
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EP09774924.6A
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German (de)
French (fr)
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EP2350522A1 (en
Inventor
Karl Mantinger
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/767—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having directions perpendicular to the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/03—Gas-tight or water-tight arrangements with provision for venting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/04—Provision of filling media
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/101—Outdoor lighting of tunnels or the like, e.g. under bridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the present invention relates to an LED lighting device comprising a structure for receiving light-emitting diodes, at least one reflector and a cover.
  • the light string comprises a light source provided with a plurality of LEDs, a structure for receiving this light source and having an open side portion to allow the light beam generated by the light source to exit the light string, with means for monitoring the operation of the light source.
  • means for monitoring the operation of the light source in particular current limiter or current regulator, means that provides for the supply of the light source.
  • means are provided to dissipate the heat generated by the light source such that the light source, the means for monitoring the light source and the means for feeding the light source can be integrated within the structure. These heat dissipation means are in contact with the plate where the LEDs are mounted. This requires a precise assembly.
  • the lighting devices in the tunnels are required to provide a watertight seal of the lighting device in order to prevent moisture and water infiltration and the consequential damage to the lighting device.
  • the lighting device for tunnels also requires a particularly high strength during continuous operation. This requires maintaining a low temperature at the contact points of the LEDs to extend their life.
  • the diodes must withstand cleaning by means of water and / or steam jets.
  • the US document 2005/213328 (D1) describes an LED lighting device having a base body having at least at one of its sides cooling fins, LED, s, which are attached to one side of the base body and are fed from the outside via one or more power lines from an electrical energy source, and a transparent cover, wherein the base body and the cover form a hermetically sealed space.
  • the object of the invention i.
  • the solution to the problems associated with heat dissipation lies in the design of a lighting device, in particular for tunnels.
  • the lighting device according to the invention is used above all in the area of tunnels. In this environment, the lighting device is exposed to moisture and polluting and corrosive substances. Particularly serious are the corrosive exhaust gases of the vehicles. Therefore protection against such substances is required.
  • the lighting device body is hermetically sealed by a protective cover inside which the LEDs and the supply and control electronics are located.
  • the base body is designed such that the heat is dissipated at the contact points between the LED and body in an advantageous manner to the outside.
  • the body of the lighting device is formed with fins on its sides. These ensure a large heat exchange surface which ensures optimal and direct exchange of heat generated by the LEDs to the outside.
  • the airflow is often forcibly channeled through a chimney effect or fans.
  • This increases the heat exchange of the LEDs outside the lighting device.
  • the lighting fixture is terminated by the LEDs with a transparent cover.
  • the LEDs do not come into direct contact with the environment and also the fasteners of the printed circuit board of the LEDs and the printed circuit board itself, which contains the power electronics of the LEDs, do not come into contact with the environment.
  • the pressure built up in the interior is compensated by volume change.
  • the change in volume is carried out according to the invention via a compensating vessel such as a balloon or a bellows which is connected to the interior. In this way and In this way, damage and corrosion due to environmental influences or moisture can be avoided.
  • the lighting device is made of a base body, which serves both as a receptacle for the LED lights as well as a cooling element, which is of utmost importance for the LED lights, as their life depends on the operating temperature of the LED lights. This direct cooling from the outside allows the lifetime of currently customary LED lights to increase to well over 100,000 operating hours. Moreover, it also ensures operation in the presence of strong vibrations and strong voltage oscillations.
  • LEDs also contributes to a low average energy consumption of more than 50% less compared to conventional incandescent lamps and a lifetime of more than 20 times higher than these.
  • the use of LED lights largely eliminates maintenance costs.
  • the PCB for the LEDs used is set so that they are directly connected to the AC mains to 230V without the interposition of another outdoor device.
  • the LEDs are so over several power lines connected, that they can be switched on individually in predetermined sectors or in succession, to be able to be adapted alternately as day and night or in emergencies of the necessary brightness.
  • the reference numeral 1 overall indicates a lighting device for tunnels.
  • This lighting device for tunnels 1 comprises a base body 2 acting as a dissipation device (heat sink) provided with fins 3 for cooling the lighting device, and a transparent cover 4 closing off the open portion of the base body 2.
  • LED lights 5 are added, which are in direct contact with the base body 2. This allows the shock heat transfer to the cooling fins 3, wherein the heat dissipating surface of the base body 2 is increased.
  • On the sides of the LED lights reflectors 6 are arranged, which allow an alignment of the light.
  • Fasteners 7 allow the attachment of the LED lights and the fasteners 20 of the reflectors on the base body 2.
  • An electrical connection 8 of the partial or total power of the LEDs, ie the Lighting device, is designed such that the safety standards are met, for example, waterproof and heat-resistant in case of fire.
  • An expansion vessel 9 is formed such that the gas is received within the body of the lighting device during its expansion due to the change in temperature or a heat release on the lighting device body.
  • the lighting device 1 has a hermetically sealed interior 10, which has no interaction with the outside.
  • This interior can be filled with gas and / or air, in particular with inert gas, which increases the life of the LED lights 5 and the inner components of the LEDs.
  • the gas and / or the air should, if it expands during heating, the expansion vessel 9, during the cooling of the gas and / or the air, the expansion body avoids a negative pressure within the lighting device body.
  • This closed space avoids breakage of the cover or end glass and pressure jumps in internal parts of the lighting device and also avoids any moisture that can penetrate into the lighting device and corrosive damage and / or short circuits in could cause the electrical system.
  • the reflectors 6 allow the function of being able to align the light beam, in particular to provide a uniform, easily alignable beam. This brings significant benefits, especially in tunnels for vehicles.
  • the light beam can be aligned so that the road is illuminated in the direction of travel of the vehicles, without generating dangerous light effects dazzling kind for the vehicle driver.
  • the light beam is not limited in the direction of the sides.
  • the externally hermetically sealed lighting device also allows the use of quick-acting cleaning agents, e.g. High pressure water jet or the like, for the cleaning of the transparent surface and therefore avoids blockages and / or slowdowns of excessive duration within the tunnel.
  • FIG. 3 shows the cross section of the LED device according to the invention, in particular one sees the direct contact of the LEDs on the base body 2, the cooling fins 3, which maintain the lowest possible temperature of the LEDs upright.
  • the life of a LED is significantly increased in response to the lowering of the temperature.
  • the expansion tank consists of a bellows 29 which is mounted via a screw with seal 30 in a receptacle 31 of the base body 2 such that the bellows interior is connected to the interior 10 via a connecting bore 32 at the base of the receptacle 31.
  • the bellows 29 is closed by a protective grid 33 and / or cover 34 in order to avoid any damage due to external influences.
  • FIG. 7 it can be found in the receptacle 31 and a balloon 39 may be attached.
  • the reflectors 6 could be oriented in any direction, eg as in FIG FIG. 7 indicated by 6 ', in the lateral direction.

Description

Die vorliegende Erfindung bezieht sich auf eine LED-Beleuchtungsvorrichtung, die einen Aufbau zur Aufnahme von Lichtemissionsdioden, mindestens einen Reflektor und eine Abdeckung umfasst.The present invention relates to an LED lighting device comprising a structure for receiving light-emitting diodes, at least one reflector and a cover.

Aus dem Stand der Technik sind LED-Beleuchtungsvorrichtungen wie aus der italienischen Patentanmeldung TO 2003 A 000 673 bekannt. Bei dieser umfasst der Lichtstrang eine mit einer Vielzahl von LEDs versehene Lichtquelle einen Aufbau zur Aufnahme dieser Lichtquelle und mit einem offenen Seitenteil, um dem von der Lichtquelle erzeugten Lichtbündel zu erlauben, aus dem Lichtstrang auszutreten, mit Mitteln, die den Betrieb der Lichtquelle überwachen, insbesondere Strombegrenzer bzw. Stromregler, Mitteln, die für die Speisung der Lichtquelle sorgt. Es sind überdies Mittel vorgesehen, um die von der Lichtquelle erzeugte Wärme derart zu zerstreuen, dass die Lichtquelle, die Mittel zur Überwachung der Lichtquelle und die Mittel zur Speisung der Lichtquelle innerhalb des Aufbaus integriert werden können. Diese Wärmezerstreuungsmittel sind mit der Platte in Kontakt, wo die LEDs angebracht sind. Dies erfordert eine genaue Montage. Für die Montage der Beleuchtungsvorrichtungen in den Tunnels wird überdies eine wasserdichte Abdichtung der Beleuchtungsvorrichtung gefordert, um Feuchtigkeits- und Wasserinfiltrationen.und die daraus folgende Beschädigung der Beleuchtungsvorrichtung zu vermeiden. Die Beleuchtungsvorrichtung für Tunnels erfordert überdies einen besonders hohen Festigkeit bei Dauerbetrieb. Dies erfordert die Beibehaltung einer niedrigen Temperatur an den Kontaktstellen der Leuchtdioden um deren Lebensdauer zu verlängern. Überdies müssen die Dioden der Reinigung mittels Wasser und/oder Dampfstrahlen widerstehen.From the prior art are LED lighting devices as in the Italian patent application TO 2003 A 000 673 known. In this, the light string comprises a light source provided with a plurality of LEDs, a structure for receiving this light source and having an open side portion to allow the light beam generated by the light source to exit the light string, with means for monitoring the operation of the light source. in particular current limiter or current regulator, means that provides for the supply of the light source. In addition, means are provided to dissipate the heat generated by the light source such that the light source, the means for monitoring the light source and the means for feeding the light source can be integrated within the structure. These heat dissipation means are in contact with the plate where the LEDs are mounted. This requires a precise assembly. For the assembly Furthermore, the lighting devices in the tunnels are required to provide a watertight seal of the lighting device in order to prevent moisture and water infiltration and the consequential damage to the lighting device. The lighting device for tunnels also requires a particularly high strength during continuous operation. This requires maintaining a low temperature at the contact points of the LEDs to extend their life. Moreover, the diodes must withstand cleaning by means of water and / or steam jets.

Das US Dokument 2005/213328 (D1) beschreibt eine LED-Beleuchtungsvorrichtung, welche einen Basiskörper aufweist, der mindestens an einer seiner Seiten Kühllamellen aufweist, LED,s, die an einer Seite des Basiskörpers befestigt sind und von außen über eine oder mehrere Stromleitungen von einer elektrische Energiequelle gespeist werden, und eine transparente Abdeckung, wobei der Basiskörper und die Abdeckung einen hermetisch abgedichteten Raum bilden.The US document 2005/213328 (D1) describes an LED lighting device having a base body having at least at one of its sides cooling fins, LED, s, which are attached to one side of the base body and are fed from the outside via one or more power lines from an electrical energy source, and a transparent cover, wherein the base body and the cover form a hermetically sealed space.

Das US Dokument 3 854 040 (D2) beschreibt eine Lampe für ein Automobil bestehend aus:

  • einem Lampengehäuse, in dem eine Glühbirne installiert ist; eine Linse befestigt am besagten Lampengehäuse in einer zu definierenden Weise, einem Wärmeabschirmblech.
  • An diesem Lampengehäuse ist ein Ausdehnungsgefäß angebracht, welches durch Ausdehnung oder Kompression einen Über- oder Unterdruck verhindert.
The US Pat. No. 3,854,040 (D2) describes a lamp for an automobile consisting of:
  • a lamp housing in which a light bulb is installed; a lens attached to said lamp housing in a manner to be defined, a heat shield.
  • At this lamp housing, an expansion vessel is mounted, which prevents over expansion or compression by over or under pressure.

Die Aufgabe der Erfindung, d.h. die Lösung der mit der Wärmedissipation zusammenhängende Probleme liegt in der Ausführung einer Beleuchtungsvorrichtung insbesondere für Tunnels.The object of the invention, i. The solution to the problems associated with heat dissipation lies in the design of a lighting device, in particular for tunnels.

Diese Aufgabe wird erfindungsgemäß durch eine Beleuchtungsvorrichtung der oben angegebenen Art mit den im Anspruch 1 angegebenen Merkmalen gelöst.This object is achieved by a lighting device of the type indicated above with the features specified in claim 1.

Die Beleuchtungsvorrichtung gemäß der Erfindung wird vor allem im Bereich der Tunnels verwendet. In dieser Umgebung ist die Beleuchtungsvorrichtung der Feuchtigkeit und verschmutzenden und korrosiven Stoffen ausgesetzt. Besonders schwerwiegend sind die korrosiven Auspuffgase der Fahrzeuge. Deshalb wird ein Schutz vor solchen Stoffen verlangt. Um dies zu gewährleisten ist der Beleuchtungsvorrichtungskörper hermetisch durch eine Schutzabdeckung abgeschlossen, in dessen Inneren sich die LEDs und die Speise- und Regelungselektronik befinden. Der Basiskörper ist derart ausgebildet, dass die Wärme an den Kontaktstellen zwischen LED und Körper auf vorteilhafte Art und Weise nach außen abgeleitet wird. Der Körper der Beleuchtungsvorrichtung ist an seinen Seiten mit Lamellen ausgebildet. Diese gewährleisten eine große Wärmeaustauschoberfläche, die einen optimalen und direkten Austausch von durch die LEDs erzeugte Wärme nach außen gewährleisten. Insbesondere in den Tunnels ist der Luftstrom oft durch einen Kamineffekt oder Ventilatoren zwangsgeleitet. Dies erhöht den Wärmeaustausch der LEDs außerhalb der Beleuchtungsvorrichtung. Der Beleuchtungskörper wird seitens der LEDs mit einer transparenten Abdeckung abgeschlossen. Auf diese Weise kommen die LEDs nicht in direkten Kontakt mit der Umgebung und auch nicht die Befestigungselemente der Leiterplatte der LEDs und der Leiterplatte selbst, die die Speiseelektronik der LEDs enthält, kommen nicht mit der Umgebung in Kontakt. Erfindungsgemäß wird der im Innenraum aufgebaute Druck durch Volumenveränderung ausgeglichen. Die Volumenveränderung erfolgt erfindungsgemäß über ein Ausgleichsgefäß wie z.B. einen Ballon oder einen Balg der mit dem Innenraum verbunden ist. Auf diese Art und Weise werden Beschädigungen und Korrosion seitens von Umwelteinflüssen oder seitens der Feuchtigkeit vermieden. Dies verleiht der Beleuchtungsvorrichtung eine höhere Lebensdauer und überdies werden die Wartungseingriffe reduziert. Dank dieser Konstruktion kommen die Innenelemente der Beleuchtungsvorrichtung nicht mit den Außeneinflüssen in Kontakt. Überdies kann die Beleuchtungsvorrichtung die Norm IP-67 erfüllen. Die Beleuchtungsvorrichtung wird aus einem Basiskörper hergestellt, der sowohl als Aufnahme für die LED-Leuchten als auch als Kühlelement dient, was von größter Wichtigkeit für die LED-Leuchten ist, da ihre Lebensdauer von der Betriebstemperatur der LED-Leuchten abhängt. Diese direkte Abkühlung von außen erlaubt die Lebensdauer der zur Zeit üblichen LED-Leuchten auf weit über 100.000 Betriebsstunden zu erhöhen. Überdies wird auch ein Betrieb in Anwesenheit von starken Vibrationen und starken Spannungsschwingungen sichergestellt. Der Einsatz von LEDs trägt überdies zu einem niedrigen durchschnittlichen Energieverbrauch mehr als 50% weniger gegenüber herkömmlichen Glühlampen und eine Lebensdauer von mehr als 20 Mal höher als diese bei. Die Verwendung der LED-Leuchten beseitigt weitgehend die Wartungskosten. Die Leiterplatte für die benutzten LEDs ist derart eingestellt, dass sie direkt mit dem Wechselstromnetz zu 230V ohne Zwischenschaltung einer weiteren Außenvorrichtung verbunden werden. Die LEDs sind über mehrere Stromleitungen derart verbunden, dass sie einzeln in vorgegebenen Sektoren oder in Folge eingeschaltet werden können, um sich wechselnd wie Tag und Nacht oder bei Notfällen der nötigen Helligkeit angepasst werden können.The lighting device according to the invention is used above all in the area of tunnels. In this environment, the lighting device is exposed to moisture and polluting and corrosive substances. Particularly serious are the corrosive exhaust gases of the vehicles. Therefore protection against such substances is required. To ensure this, the lighting device body is hermetically sealed by a protective cover inside which the LEDs and the supply and control electronics are located. The base body is designed such that the heat is dissipated at the contact points between the LED and body in an advantageous manner to the outside. The body of the lighting device is formed with fins on its sides. These ensure a large heat exchange surface which ensures optimal and direct exchange of heat generated by the LEDs to the outside. Especially in the tunnels, the airflow is often forcibly channeled through a chimney effect or fans. This increases the heat exchange of the LEDs outside the lighting device. The lighting fixture is terminated by the LEDs with a transparent cover. In this way, the LEDs do not come into direct contact with the environment and also the fasteners of the printed circuit board of the LEDs and the printed circuit board itself, which contains the power electronics of the LEDs, do not come into contact with the environment. According to the pressure built up in the interior is compensated by volume change. The change in volume is carried out according to the invention via a compensating vessel such as a balloon or a bellows which is connected to the interior. In this way and In this way, damage and corrosion due to environmental influences or moisture can be avoided. This gives the lighting device a longer life and, moreover, the maintenance operations are reduced. Thanks to this construction, the inner elements of the lighting device do not come into contact with the external influences. In addition, the lighting device can meet the IP-67 standard. The lighting device is made of a base body, which serves both as a receptacle for the LED lights as well as a cooling element, which is of utmost importance for the LED lights, as their life depends on the operating temperature of the LED lights. This direct cooling from the outside allows the lifetime of currently customary LED lights to increase to well over 100,000 operating hours. Moreover, it also ensures operation in the presence of strong vibrations and strong voltage oscillations. The use of LEDs also contributes to a low average energy consumption of more than 50% less compared to conventional incandescent lamps and a lifetime of more than 20 times higher than these. The use of LED lights largely eliminates maintenance costs. The PCB for the LEDs used is set so that they are directly connected to the AC mains to 230V without the interposition of another outdoor device. The LEDs are so over several power lines connected, that they can be switched on individually in predetermined sectors or in succession, to be able to be adapted alternately as day and night or in emergencies of the necessary brightness.

Die Merkmale und die Einzelheiten der Beleuchtungsvorrichtung für Tunnels gehen aus den Patentansprüchen und aus der folgenden Beschreibung eines bevorzugten, in der beigefügten Zeichnung dargestellten Ausführungsbeispiels hervor. Es zeigen,

Figur 1
eine schematische Seitenansicht einer Beleuchtungsvorrichtung für Tunnels, in einer ersten Ausführungsform,
Figur 2
eine Stirnansicht einer Beleuchtungsvorrichtung für Tunnels, in der Ausführungsform aus Figur 1,
Figur 3
einen Schnitt gemäß der Schnittlinie A-A der Figur 1, und
Figur 4
eine Grafik der Lebensdauer eines LEDs in Abhängigkeit der Temperatur an deren Kontaktstellen,
Figur 5
einen Schnitt längs der Linie V-V aus Figur 6,
Figur 6
eine Stirnansicht einer erfindungsgemäßen Beleuchtungsvorrichtung für Tunnels, in einer zweiten Ausführungsform,
Figur 7
einen Schnitt gemäß der Schnittlinie VII-VII der Figur 5 und
Figur 8
einen Schnitt wie Figur 7, jedoch in einer dritten Ausführungsform.
The features and details of the tunnel lighting device will become apparent from the claims and from the following description of a preferred embodiment shown in the accompanying drawings. Show it,
FIG. 1
3 a schematic side view of a lighting device for tunnels, in a first embodiment,
FIG. 2
an end view of a lighting device for tunnels, in the embodiment of FIG. 1 .
FIG. 3
a section along the section line AA of FIG. 1 , and
FIG. 4
a graph of the life of a LED as a function of the temperature at their contact points,
FIG. 5
a section along the line VV FIG. 6 .
FIG. 6
an end view of a lighting device according to the invention for tunnels, in a second embodiment,
FIG. 7
a section along the section line VII-VII of FIG. 5 and
FIG. 8
a cut like FIG. 7 but in a third embodiment.

Mit dem Bezugszeichen 1 ist insgesamt eine Beleuchtungsvorrichtung für Tunnels angegeben. Diese Beleuchtungsvorrichtung für Tunnels 1 umfasst einen Basiskörper 2, der als Dissipationseinrichtung bzw. Wärmeaustauscher (Kühlkörper) wirkt, der mit Lamellen 3 zur Abkühlung der Beleuchtungsvorrichtung versehen ist, und eine transparente Abdeckung 4, die den offenen Abschnitt des Basiskörpers 2 abschließt. Im Basiskörper 2 sind LED-Leuchten 5 aufgenommen, die sich in direktem Kontakt mit dem Basiskörper 2 befinden. Dies erlaubt die Stoßwärmeübertragung auf die Kühllamellen 3, wobei die Wärmezerstreufläche des Basiskörpers 2.erhöht wird. An den Seiten der LED-Leuchten sind Reflektoren 6 angeordnet, die eine Ausrichtung des Lichtes erlauben. Befestigungselemente 7 erlauben die Befestigung der LED-Leuchten und der Befestigungselemente 20 der Reflektoren am Basiskörper 2. Eine elektrische Verbindung 8 der teilweisen oder gesamten Speisung der LEDs, d.h. der Beleuchtungsvorrichtung, ist derart ausgebildet, dass die Sicherheitsnormen erfüllt werden, z.B. wasserdicht und wärmewiderstandsfähig bei Brand. Ein Ausdehnungsgefäß 9 ist derart ausgebildet, dass das Gas innerhalb des Körpers der Beleuchtungsvorrichtung während seiner Ausdehnung zufolge der Temperaturveränderung oder einer Wärmeabgabe auf dem Beleuchtungsvorrichtungskörper aufgenommen wird.The reference numeral 1 overall indicates a lighting device for tunnels. This lighting device for tunnels 1 comprises a base body 2 acting as a dissipation device (heat sink) provided with fins 3 for cooling the lighting device, and a transparent cover 4 closing off the open portion of the base body 2. In the base body 2 LED lights 5 are added, which are in direct contact with the base body 2. This allows the shock heat transfer to the cooling fins 3, wherein the heat dissipating surface of the base body 2 is increased. On the sides of the LED lights reflectors 6 are arranged, which allow an alignment of the light. Fasteners 7 allow the attachment of the LED lights and the fasteners 20 of the reflectors on the base body 2. An electrical connection 8 of the partial or total power of the LEDs, ie the Lighting device, is designed such that the safety standards are met, for example, waterproof and heat-resistant in case of fire. An expansion vessel 9 is formed such that the gas is received within the body of the lighting device during its expansion due to the change in temperature or a heat release on the lighting device body.

Die erfindungsgemäße Beleuchtungsvorrichtung 1 weist einen hermetisch geschlossenen Innenraum 10 auf, der keine Wechselwirkung mit außen besitzt. Dieser Innenraum kann mit Gas und/oder Luft, insbesondere mit Inertgas gefüllt sein, das die Lebensdauer der LED-Leuchten 5 und der Innenbestandteile der LEDs erhöht. Um Druckschwankungen im Innenraum 10 zu vermeiden, füllt das Gas und/oder die Luft, sollte es sich während der Erwärmung ausdehnen, das Ausdehnungsgefäß 9, während der Kühlung des Gases und/oder der Luft vermeidet der Ausdehnungskörper einen Unterdruck innerhalb des Beleuchtungsvorrichtungskörpers. Dieser abgeschlossene Raum vermeidet einen Bruch des Abdeckungs- oder Abschlussglases und Drucksprünge in inneren Teilen der Beleuchtungsvorrichtung und vermeidet gleichfalls eine eventuelle Feuchtigkeit, die in die Beleuchtungsvorrichtung eindringen kann und korrosive Schäden und/oder Kurzschlüsse in der elektrischen Anlage verursachen könnte.The lighting device 1 according to the invention has a hermetically sealed interior 10, which has no interaction with the outside. This interior can be filled with gas and / or air, in particular with inert gas, which increases the life of the LED lights 5 and the inner components of the LEDs. In order to avoid pressure fluctuations in the interior 10, the gas and / or the air should, if it expands during heating, the expansion vessel 9, during the cooling of the gas and / or the air, the expansion body avoids a negative pressure within the lighting device body. This closed space avoids breakage of the cover or end glass and pressure jumps in internal parts of the lighting device and also avoids any moisture that can penetrate into the lighting device and corrosive damage and / or short circuits in could cause the electrical system.

Die Reflektoren 6 erlauben die Funktion, den Lichtstrahl ausrichten zu können, insbesondere ein gleichförmiges, gut ausrichtbares Srahl zu schaffen. Dies bewirkt erhebliche Vorteile, insbesondere in Tunnels für Fahrzeuge. Der Lichtstrahl kann derart ausgerichtet werden, dass die Straße in Fahrtrichtung der Fahrzeuge beleuchtet wird, ohne gefährliche Lichteffekte blendender Art für die Fahrzeuglenker zu erzeugen. Das Lichtbündel wird dabei in Richtung der Seiten nicht begrenzt. Die nach außen hermetisch abgeschlossene Beleuchtungsvorrichtung erlaubt überdies die Verwendung von rasch wirkenden Reinigungsmitteln, z.B. Hochdruckwasserstrahl oder der gleichen, für die Reinigung der transparenten Oberfläche und vermeidet daher Sperrungen und/oder Verlangsamungen übertriebener Dauer innerhalb des Tunnels.The reflectors 6 allow the function of being able to align the light beam, in particular to provide a uniform, easily alignable beam. This brings significant benefits, especially in tunnels for vehicles. The light beam can be aligned so that the road is illuminated in the direction of travel of the vehicles, without generating dangerous light effects dazzling kind for the vehicle driver. The light beam is not limited in the direction of the sides. The externally hermetically sealed lighting device also allows the use of quick-acting cleaning agents, e.g. High pressure water jet or the like, for the cleaning of the transparent surface and therefore avoids blockages and / or slowdowns of excessive duration within the tunnel.

Um die Abdeckung 4 (Figur 3) herum ist vorteilhafter Weise eine Rinne 11 gebildet, die den Abfluss des Kondenswassers vom Leuchtkörper ermöglicht.To cover 4 ( FIG. 3 ) around a groove 11 is advantageously formed, which allows the outflow of condensed water from the lamp.

In Figur 3 ist der Querschnitt der erfindungsgemäßen LED-Vorrichtung ersichtlich, insbesondere sieht man den direkten Kontakt des LEDs am Basiskörper 2, der Kühllamellen 3 aufweist, die die niedrig möglichste Temperatur der LEDs aufrecht erhalten. Wie aus der Grafik der Figur 4 ersichtlich, wird die Lebensdauer eines LEDs erheblich in Abhängigkeit der Herabsetzung der Temperatur erhöht.In FIG. 3 shows the cross section of the LED device according to the invention, in particular one sees the direct contact of the LEDs on the base body 2, the cooling fins 3, which maintain the lowest possible temperature of the LEDs upright. Like from the graphic of the FIG. 4 As can be seen, the life of a LED is significantly increased in response to the lowering of the temperature.

In der zweiten Ausführungsform werden gegenüber der ersten Ausführungsform nur die Teile bezeichnet, die sich von der ersten Ausführungsform unterscheiden.In the second embodiment, only the parts different from the first embodiment are referred to as the first embodiment.

In der zweiten Ausführungsform nach Figur 5, 6 und 7 besteht das Ausdehnungsgefäß aus einem Faltbalg 29, der über eine Verschraubung mit Dichtung 30 in einer Aufnahme 31 des Basiskörpers 2 derart angebracht ist, dass das Balginnere mit dem Innenraum 10 über eine Verbindungsbohrung 32 an der Basis der Aufnahme 31 verbunden ist.In the second embodiment according to FIG. 5, 6 and 7 the expansion tank consists of a bellows 29 which is mounted via a screw with seal 30 in a receptacle 31 of the base body 2 such that the bellows interior is connected to the interior 10 via a connecting bore 32 at the base of the receptacle 31.

Zweckmäßiger Weise ist der Faltbalg 29 durch ein Schutzgitter 33 und/oder Deckel 34 abgeschlossen, um etwaige Beschädigungen durch Außeneinflüsse zu vermeiden.Conveniently, the bellows 29 is closed by a protective grid 33 and / or cover 34 in order to avoid any damage due to external influences.

Wie aus Figur 7 hervorgeht, könnte in der Aufnahme 31 auch ein Ballon 39 angebracht sein.How out FIG. 7 it can be found in the receptacle 31 and a balloon 39 may be attached.

Für alle Ausführungsbeispiele können zahlreiche Varianten vorgesehen sein, um die Effizienz der erfindungsgemäßen Vorrichtung zu verbessern:

  • So kann die Abdeckung 4 am Basiskörper 2 über Befestigungsclips 36 befestigt sein um bei das Abfallen der Abdeckung 4 zu vermeiden.
Numerous variants can be provided for all embodiments in order to improve the efficiency of the device according to the invention:
  • Thus, the cover 4 may be attached to the base body 2 via fastening clips 36 in order to prevent the cover 4 from falling off.

Die Reflektoren 6 könnten in eine beliebige Richtung ausgerichtet sein, z.B. wie in Figur 7 durch 6' angedeutet, in seitlicher Richtung.The reflectors 6 could be oriented in any direction, eg as in FIG FIG. 7 indicated by 6 ', in the lateral direction.

Claims (13)

  1. A Light Emitting Diode illuminating device, comprising a base body (2) comprising at least on one of its sides cooling fins (3), LEDs (5), fastened to one side of the base body (2) and supplied from the outside by one electrical power supply through one or more electrical lines (8), preferably light reflectors (6), which are arranged on the LEDs (5), and a transparent cover (4), wherein the base body (2) and the cover (4) create a hermetically sealed space, characterized in that said hermetically sealed space is connected to at least an expansion tank and that in an intake (31) of the base body (2) is mounted a balloon (39) acting as said expansion tank such that the interior of the balloon is connected with the interior space (10) at the base of the intake (31) by means of a connecting hole (32).
  2. An illuminating device according to claim 1, characterized in that the expansion tank is an expansion balloon and/or an expansion bellow.
  3. An illuminating device according to claim 1, characterized in that the illuminating device is preferably designed with LEDs on a heat-conducting panel in a circuital embodiment for the functioning of an alternating current network at 230 V.
  4. An illuminating device according to claim 1, characterized in that the base body (2) comprises a guide slot which is longitudinally cut out in such a way as to align the LEDs during the assembly.
  5. An illuminating device according to claim 1, characterized in that the base body (2) comprises a recess which is circumferentially cut out, in such a way as to house the transparent cover (4).
  6. An illuminating device according to claim 1, characterized in that the base body (2) is hermetically separated from the transparent cover (4).
  7. An illuminating device according to claim 1, characterized in that the base body (2) comprises in its circumference a drip nozzle or a groove (11) which is faced downwards, in such a way as to allow the water to drain and to prevent the passage of the water in the direction of the transparent cover.
  8. An illuminating device according to claim 1, characterized in that within the illuminating device is positioned a reflector with a highly reflecting mirror, in particular shockproof.
  9. An illuminating device according to claim 1, characterized in that the mirror reflector is composed of individual trapezoidal profiles or continuous profiles with indentations to access the LEDs.
  10. An illuminating device according to claim 1, characterized in that the expansion tank is composed of a bellow (29) which is positioned through a threaded connection with a gasket (30) in an intake (31) of the base body (2) such that the interior of the bellow is sealed with the interior space (10) by means of a connecting hole (32) at the base of the intake (31).
  11. An illuminating device according to claim 10, characterized in that the expansion bellow (29) is sealed by means of a protective guard (33) and/or a lid (34) in such a way as to prevent damages from outside.
  12. An illuminating device according to claim 1, characterized in that the cover (4) is fastened to the base body (2) by means of fastening clips (34).
  13. An illuminating device according to claim 1, characterized in that the reflectors (6) are oriented in any directions.
EP09774924.6A 2008-11-06 2009-11-03 Led lighting device, in particular for tunnels Not-in-force EP2350522B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITBZ2008A000046A IT1391544B1 (en) 2008-11-06 2008-11-06 LED LIGHTING DEVICE (LIGHT EMITTING DIODE = DIODE EMITTER OF LIGHT), IN PARTICULAR FOR TUNNELS.
PCT/IB2009/007284 WO2010052538A1 (en) 2008-11-06 2009-11-03 Led lighting device, in particular for tunnels

Publications (2)

Publication Number Publication Date
EP2350522A1 EP2350522A1 (en) 2011-08-03
EP2350522B1 true EP2350522B1 (en) 2014-07-09

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Application Number Title Priority Date Filing Date
EP09774924.6A Not-in-force EP2350522B1 (en) 2008-11-06 2009-11-03 Led lighting device, in particular for tunnels

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EP (1) EP2350522B1 (en)
CN (1) CN102265087B (en)
IT (1) IT1391544B1 (en)
WO (1) WO2010052538A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010001931A1 (en) * 2010-02-15 2011-08-18 Osram Gesellschaft mit beschränkter Haftung, 81543 Lamp with gas filling
AT510287B1 (en) * 2010-11-18 2012-03-15 Rosenitsch Harald Ing LED SECURITY LIGHT
NL2006013C2 (en) * 2011-01-14 2012-07-17 Nedap Nv LIGHTING LIGHTS FOR LIGHTING ENVIRONMENTS THAT EXPLOSION HAZARD CAN EXIST.
DE102011052580A1 (en) 2011-08-11 2013-02-14 Hella Kgaa Hueck & Co. Outdoor light with corrosion protection
EP2930416A1 (en) 2014-03-07 2015-10-14 Andrii Bodnar LED fixture housing
DE202017105803U1 (en) * 2017-09-25 2019-01-09 Rehau Ag + Co lighting device

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Publication number Priority date Publication date Assignee Title
US3325637A (en) * 1964-03-14 1967-06-13 Honda Gijutsu Kenkyusho Kk Dust-proof headlight assembly
US3854040A (en) * 1973-08-06 1974-12-10 Gen Motors Corp Motor vehicle lamp assembly
US20040188593A1 (en) * 2003-03-20 2004-09-30 Patrick Mullins Photosensor control unit
ITTO20030673A1 (en) * 2003-09-04 2005-03-05 Space Cannon Vh S P A LED LIGHT BAR.
EP1711737B1 (en) * 2004-01-28 2013-09-18 Koninklijke Philips Electronics N.V. Sealed housing unit for lighting system
US20060087838A1 (en) * 2004-10-25 2006-04-27 Zdenko Grajcar Light diffusion bar
KR100516123B1 (en) * 2005-08-30 2005-09-21 주식회사 누리플랜 A line type led illumination lamp
DE102005055257A1 (en) * 2005-11-19 2007-05-24 Volkswagen Ag Light e.g. vehicle light, has pressure equalization device with exterior arranged closed bulb housings whereby pressure equalization device is air tight container with variable volume

Also Published As

Publication number Publication date
CN102265087B (en) 2015-05-27
EP2350522A1 (en) 2011-08-03
ITBZ20080046A1 (en) 2010-05-07
IT1391544B1 (en) 2012-01-11
CN102265087A (en) 2011-11-30
WO2010052538A1 (en) 2010-05-14

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