EP2012057B1 - Lamp - Google Patents
Lamp Download PDFInfo
- Publication number
- EP2012057B1 EP2012057B1 EP07012929A EP07012929A EP2012057B1 EP 2012057 B1 EP2012057 B1 EP 2012057B1 EP 07012929 A EP07012929 A EP 07012929A EP 07012929 A EP07012929 A EP 07012929A EP 2012057 B1 EP2012057 B1 EP 2012057B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- reflector
- luminaire
- side walls
- openings
- radiation
- 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.)
- Not-in-force
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Classifications
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- 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
- F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
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- 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
- F21V7/00—Reflectors for light sources
- F21V7/0008—Reflectors for light sources providing for indirect lighting
- F21V7/0016—Reflectors for light sources providing for indirect lighting on lighting devices that also provide for direct lighting, e.g. by means of independent light sources, by splitting of the light beam, by switching between both lighting modes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
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- 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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
Definitions
- the invention relates to a luminaire with a reflector, according to the preamble of claim 1.
- a similar light is for example in the EP 1 225 390 A1 disclosed.
- the interior light described is provided with a reflector comprising an upper reflector rear wall and reflector side walls.
- the reflector side walls define at the bottom of the reflector a light exit opening.
- the interior light has a high-pressure discharge lamp, wherein the burner is arranged in a lying burning position within the reflector.
- Luminaires with filters are used in particular for the illumination of goods display areas.
- the basic idea is to form recesses or openings in two different areas of the reflector, which allow the entry of air from the environment into the reflector and the exit of air and radiation of the light source from the reflector.
- the air inlet openings in the region of the reflector side walls and the air outlet openings in the reflector back wall are formed.
- the incoming air is heated by the hot burner of the high pressure discharge lamp so that it rises due to their elevated temperature in the reflector upwards. Then it exits from the recess or recesses in the reflector back wall. There is a chimney effect, which leads to a high air flow through the reflector.
- the air flow through the reflector causes a cooling of the burner of the high-pressure discharge lamp, so that the dimensions of the reflector can be adapted to the proportions of the high-pressure discharge lamp without the risk of overheating of the burner.
- the recess or recesses are formed in a region of the reflector rear wall opposite the burner. It is advantageous that a direct reflection of radiation back to the burner is reduced, which also contributes to the heating of the burner. In addition, the heated air can escape from the reflector directly above the hot burner, so that a particularly good ventilation and thus improved cooling of the burner is achieved.
- the recess or recesses have / have a shape and size which are substantially adapted to the contour of the burner.
- the light exit opening is closed with a closure plate which is transparent to radiation.
- the high-pressure discharge lamp is shielded from the environment, so that on the one hand prevents their damage and on the other hand is excluded in a destruction of the high-pressure discharge lamp, the injury of people by flying splinters.
- a further embodiment provides that the openings in the lower third of the reflector side walls are formed above the light exit opening. It has in fact been found that in this case the air entering through the openings occurs for the most part directly on the burner of the high-pressure discharge lamp and thus cools it even more strongly. This has the consequence that the operating temperature of the high-pressure discharge lamp is further reduced, which leads to an increase in efficiency.
- the openings in the reflector side walls form a ring.
- the openings may in particular be arranged symmetrically spaced in the reflector side walls.
- the openings as at least partially circumferential gap between the lower End region of the reflector side walls and the closure plate are formed.
- a preferred embodiment of the invention provides a veneer which encloses the reflector and a mounting frame in which the veneer is held. It is formed between the veneer and the mounting frame, a gap that allows the influx of air.
- the mounting frame allows in particular to install the lamp in ceilings or walls in a simple manner. It is ensured that the necessary for the cooling of the lamp air can reach the reflector and in particular to the openings in the reflector side walls.
- the openings in the region of the reflector side walls may be formed so as to allow the entry of air which flows through the gap between the veneer and the mounting frame and then over the edge of the veneer in the direction of the reflector.
- the openings may be formed in the region of the veneer.
- the reflector is designed to produce a batwing light distribution. This is particularly advantageous when the lamp is to be used for the illumination of elongated goods presentation areas.
- the reflector rear wall and / or the reflector side walls with a diffuse surface which reflects the incident radiation in a scattered manner. In this way, in addition, the reflection from the reflector is reduced to the burner of the high-pressure discharge lamp.
- the closure plate may be formed as a filter which absorbs or reflects parts of the radiation.
- the light spectrum emitted by the luminaire can be adapted in a simple manner.
- certain color components or radiation can be filtered out or reflected, which are undesirable, for example, in the illumination of goods presentation areas.
- the burner of the high-pressure discharge lamp can be arranged in a horizontal or stationary burning position within the reflector.
- the first luminaire 1 has a reflector 2, which is provided with a reflector back wall 3 and with reflector side walls 4.
- the reflector side walls 4 define a lower light exit opening 5 of the reflector 3.
- a plurality of circular openings 6 are formed here in a circle.
- the first lamp 1 comprises a high-pressure discharge lamp 7, which is provided with a burner 8.
- the burner 8 is arranged in a horizontal combustion position within the reflector 2 in parallel and at a distance from the reflector back wall 3.
- two recesses 9 are formed, which are matched together in their shape and size to the contour of the burner 8.
- the light exit opening 5 is closed by a filter 10, which is designed to filter out certain components of the radiation emitted by the high-pressure discharge lamp 7.
- the reflector 2 is bordered by a veneer 11, which in turn is held in a mounting frame 12. Between the veneer 11 and the mounting frame 12, a gap 13 is formed, which allows the influx of air.
- the mounting frame 12 has retaining elements, not shown in the drawing, which enables a detachable fastening of the mounting frame 10 to wall regions 14.
- the lamp 1 flows, as in the FIG. 1 shown, air from the environment through the gap 13 in the lamp 1 and then over the edge of the facing 11 in the direction of the reflector 2.
- the air enters through the openings 6 in the interior of the reflector 2, wherein a substantial part of hits the burner 8.
- the air contributes to the cooling of the burner 8, in which it absorbs heat from it, whereby it is heated itself.
- the heated air flows inside the reflector 2 in the direction of the reflector rear wall 3 and then exits through the recesses 9 in the reflector rear wall 3.
- the described way of the air in the lamp 1 in and out of her is in the FIG. 1 indicated by arrows.
- the openings 6 and the recesses 9 creates a chimney effect, so that a particularly large amount of air through the lamp flows through, resulting in intensive cooling of the burner 7.
- the recesses 9 are formed in the reflector back wall 3 such that only a small portion of radiation from the reflector back wall 3 is reflected directly onto the burner 8. Thus, much of the radiation which could be reflected back onto the burner 8 emerges from the recesses 9 of the reflector. Thus, although this radiation is the lamp 1 lost, but it has been shown that this loss of luminosity is more than compensated by an improved luminous power of the burner 8 due to its low temperature.
- the reflector 2 can be adapted exactly to the size of the high-pressure discharge lamp 7, since it is ensured that the burner 8 is sufficiently cooled despite the small dimensions of the reflector 2.
- FIG. 3 is a side view of a second lamp 1 according to the invention shown.
- the second lamp 1 is substantially in the in the FIGS. 1 and 2 shown first lamp 1 identical. Therefore, the same parts are given the same reference numerals. In the following, only differences between the first and the second lamp will be described.
- the light 1 of FIG. 3 has no openings 6 in the reflector side walls 4.
- an at least partially circumferential gap 15 is formed between the lower end region of the reflector side walls 4 and the closure plate 10, through which air from the environment can enter the reflector 2.
- the closure plate 10 is attached to the lower end regions of the reflector side walls 4 via webs not shown in the drawing.
- the second lamp 1 is traversed by air, so that the burner 8 of the high-pressure discharge lamp 7 is sufficiently cooled.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
Die Erfindung betrifft eine Leuchte mit einem Reflektor, nach dem Oberbegriff von Anspruch 1.The invention relates to a luminaire with a reflector, according to the preamble of
Eine ähnliche Leuchte ist beispielsweise in der
Bei derartigen Leuchten sind teilweise Verschlussplatten vorgesehen, die die Lichtaustrittsöffnung verschließen. Diese sind für Strahlung transparent ausgebildet, wobei sie zusätzlich Filtereigenschaften haben können, so dass bestimmte Strahlungsanteile absorbiert oder reflektiert werden. Leuchten mit Filtern werden insbesondere für die Beleuchtung von Warenpräsentationsflächen eingesetzt.In such lights partially closure plates are provided which close the light exit opening. These are designed to be transparent to radiation, where they may additionally have filter properties, so that certain radiation components are absorbed or reflected become. Luminaires with filters are used in particular for the illumination of goods display areas.
In den letzten Jahren sind Versuche unternommen worden, die Leistung der Leuchten zu erhöhen und gleichzeitig deren Ausmaße zu reduzieren. So sind Hochdruckentladungslampen entwickelt worden, die deutlich kleiner als die noch vor wenigen Jahren verwendeten Lampen sind. In Anpassung an die nun erhältlichen kleineren Hochdruckentladungslampen sind auch die Ausmaße der Reflektoren verringert worden, wobei jedoch unerwartete Probleme aufgetreten sind. So ist festgestellt worden, dass sich insbesondere die Brenner der Hochdruckentladungslampen zu stark aufheizen, wenn sie innerhalb eines verkleinerten Reflektors angeordnet betrieben werden. Dieser Effekt wird noch erheblich verstärkt, wenn die Lichtaustrittsöffnung des Reflektors mit einer Verschlussplatte versehen ist. Eine zu hohe Brennertemperatur reduziert nicht nur die Lichtleistung der Hochdruckentladungslampe, sondern senkt auch deren Gesamtlebensdauer.In recent years, attempts have been made to increase the performance of the luminaires while reducing their dimensions. Thus, high-pressure discharge lamps have been developed, which are significantly smaller than the lamps used only a few years ago. In adaptation to the now available smaller high pressure discharge lamps, the dimensions of the reflectors have also been reduced, but unexpected problems have occurred. Thus, it has been found that, in particular, the burners of the high-pressure discharge lamps heat up too much when they are operated within a reduced reflector. This effect is greatly enhanced if the light exit opening of the reflector is provided with a closure plate. Too high a burner temperature not only reduces the light output of the high pressure discharge lamp, but also lowers its overall life.
In der Folge ist es bisher nicht möglich, die Ausmaße des Reflektors im gleichen Maße wie die der Hochdruckentladungslampe zu reduzieren, d.h. es ist nach wie vor notwendig, einen Vergleich zu Hochdruckentladungslampe unverhältnismäßig großen Reflektor einzusetzen, um ein Überhitzen des Brenners zu verhindern.As a result, it has not been possible to reduce the dimensions of the reflector to the same extent as that of the high-pressure discharge lamp, ie it is still necessary to use a comparatively large reflector compared to a high-pressure discharge lamp in order to prevent overheating of the burner.
Aus der
Es ist Aufgabe der vorliegenden Erfindung, eine Leuchte der eingangs genannten Art so weiter zu entwikkeln, dass ihre Gesamtgröße gegenüber den im Stand der Technik bekannten Leuchten weiter reduziert werden kann, ohne dass es zu einer Beeinträchtigung der Leuchtleistung kommt.It is an object of the present invention to further develop a luminaire of the type mentioned at the outset so that its overall size can be further reduced in comparison with the luminaires known in the prior art, without any impairment of the luminous output.
Diese Aufgabe wird erfindungsgemäß bei einer Leuchte der eingangs genannten Art durch die kennzeichnenden Merkmale von Anspruch 1 gelost.This object is achieved in a luminaire of the type mentioned by the characterizing features of
Grundgedanke ist es, in zwei verschiedenen Bereichen des Reflektors Aussparungen bzw. Öffnungen auszubilden, die den Eintritt von Luft aus der Umgebung in den Reflektor und den Austritt von Luft und Strahlung der Lichtquelle aus dem Reflektor ermöglichen. Dabei sind die Lufteintrittsöffnungen im Bereich der Reflektorseitenwänden und die Luftaustrittsöffnungen in der Reflektorrückwand ausbildet. Die eintretende Luft wird von dem heißen Brenner der Hochdruckentladungslampe erwärmt, so dass sie auf Grund ihrer erhöhten Temperatur im Reflektor nach oben steigt. Anschließend tritt sie aus der oder den Aussparungen in der Reflektorrückwand aus. Es tritt ein Kamineffekt auf, der zu einem hohen Luftdurchsatz durch den Reflektor führt. Der Luftströmung durch den Reflektor bewirkt eine Kühlung des Brenners der Hochdruckentladungslampe, so dass die Ausmaße des Reflektors an die Proportionen der Hochdruckentladungslampe angepasst werden können, ohne dass die Gefahr der Überhitzung des Brenners besteht.The basic idea is to form recesses or openings in two different areas of the reflector, which allow the entry of air from the environment into the reflector and the exit of air and radiation of the light source from the reflector. The air inlet openings in the region of the reflector side walls and the air outlet openings in the reflector back wall are formed. The incoming air is heated by the hot burner of the high pressure discharge lamp so that it rises due to their elevated temperature in the reflector upwards. Then it exits from the recess or recesses in the reflector back wall. There is a chimney effect, which leads to a high air flow through the reflector. The air flow through the reflector causes a cooling of the burner of the high-pressure discharge lamp, so that the dimensions of the reflector can be adapted to the proportions of the high-pressure discharge lamp without the risk of overheating of the burner.
Gemäß der Erfindung ist die Aussparung oder sind die Aussparungen in einem dem Brenner gegenüber liegenden Bereich der Reflektorrückwand ausgebildet. Hierbei ist vorteilhaft, dass eine direkte Reflektion von Strahlung zurück auf den Brenner reduziert wird, die ebenfalls zur Erwärmung des Brenners beiträgt. Außerdem kann hier die erwärmte Luft direkt oberhalb des heißen Brenners aus dem Reflektor austreten, so dass eine besonders gute Lüftung und damit auch eine verbesserte Kühlung des Brenners erzielt wird.According to the invention, the recess or recesses are formed in a region of the reflector rear wall opposite the burner. It is advantageous that a direct reflection of radiation back to the burner is reduced, which also contributes to the heating of the burner. In addition, the heated air can escape from the reflector directly above the hot burner, so that a particularly good ventilation and thus improved cooling of the burner is achieved.
Dabei hat/haben die Aussparung oder die Aussparungen eine Form und Größe, die im wesentlichen an die Kontur des Brenners angepasst sind. So ist dafür gesorgt, dass die direkte Rückstrahlung auf den Brenner minimiert ist, während gleichzeitig die Reflektionsleistung des Reflektors einen hohen Wert aufweist.In this case, the recess or recesses have / have a shape and size which are substantially adapted to the contour of the burner. Thus, it is ensured that the direct return to the burner is minimized, while at the same time the reflection power of the reflector has a high value.
Gemäß einer ersten Ausführungsform der Erfindung ist vorgesehen, dass die Lichtaustrittsöffnung mit einer Verschlussplatte, die für Strahlung transparent ist, verschlossen ist. Auf diese Weise wird die Hochdruckentladungslampe gegenüber der Umgebung abgeschirmt, so dass einerseits deren Beschädigung verhindert und andererseits bei einer Zerstörung der Hochdruckentladungslampe die Verletzung von Menschen durch herumfliegende Splitter ausgeschlossen ist.According to a first embodiment of the invention it is provided that the light exit opening is closed with a closure plate which is transparent to radiation. In this way, the high-pressure discharge lamp is shielded from the environment, so that on the one hand prevents their damage and on the other hand is excluded in a destruction of the high-pressure discharge lamp, the injury of people by flying splinters.
Eine weitere Ausführungsform sieht vor, dass die Öffnungen im unteren Drittel der Reflektorseitenwände oberhalb der Lichtaustrittsöffnung ausgebildet sind. Es hat sich nämlich herausgestellt, dass in diesem Fall die durch die Öffnungen eintretende Luft großteils direkt auf den Brenner der Hochdruckentladungslampe auftritt und diesen so noch stärker kühlt. Dies hat zur Folge, dass die Betriebstemperatur der Hochdruckentladungslampe weiter gesenkt wird, was zu einer Effizienzsteigerung führt.A further embodiment provides that the openings in the lower third of the reflector side walls are formed above the light exit opening. It has in fact been found that in this case the air entering through the openings occurs for the most part directly on the burner of the high-pressure discharge lamp and thus cools it even more strongly. This has the consequence that the operating temperature of the high-pressure discharge lamp is further reduced, which leads to an increase in efficiency.
In Weiterbildung der Erfindung ist vorgesehen, die Öffnungen in den Reflektorseitenwänden kranzförmig auszubilden. So können die Öffnungen insbesondere symmetrisch beabstandet in den Reflektorseitenwänden angeordnet sein. Hierdurch wird vorteilhafterweise ein gleichmäßiger Lufteintritt von allen Seiten in den Reflektor ermöglicht, so dass eine einheitliche Temperaturverteilung innerhalb des Reflektors erzielt wird und der Brenner der Hochdruckentladungslampe von allen Seiten eine gleichmä-βige Kühlung erfährt.In a further development of the invention, it is provided that the openings in the reflector side walls form a ring. Thus, the openings may in particular be arranged symmetrically spaced in the reflector side walls. As a result, a uniform air inlet is advantageously made possible from all sides in the reflector, so that a uniform temperature distribution is achieved within the reflector and the burner of the high pressure discharge lamp undergoes gleichmä-βige cooling from all sides.
Es ist ebenfalls möglich, dass die Öffnungen als zumindest teilweise umlaufender Spalt zwischen dem unteren Endbereich der Reflektorseitenwände und der Verschlussplatte ausgebildet sind.It is also possible that the openings as at least partially circumferential gap between the lower End region of the reflector side walls and the closure plate are formed.
Eine bevorzugte Ausführungsform der Erfindung sieht eine Verblendung, die den Reflektor einfasst, und einen Einbaurahmen, in dem die Verblendung gehalten ist, vor. Es ist zwischen der Verblendung und dem Einbaurahmen ein Spalt ausgebildet, der das Einströmen von Luft ermöglicht. Der Einbaurahmen erlaubt es insbesondere, die Leuchte in Decken oder wänden auf einfache Weise anzubringen. Dabei ist sichergestellt, dass die für die Kühlung der Leuchte notwendige Luft zu dem Reflektor und insbesondere zu den Öffnungen im Bereich der Reflektorseitenwände gelangen kann.A preferred embodiment of the invention provides a veneer which encloses the reflector and a mounting frame in which the veneer is held. It is formed between the veneer and the mounting frame, a gap that allows the influx of air. The mounting frame allows in particular to install the lamp in ceilings or walls in a simple manner. It is ensured that the necessary for the cooling of the lamp air can reach the reflector and in particular to the openings in the reflector side walls.
Die Öffnungen im Bereich der Reflektorseitenwände können so ausgebildet sein, dass sie den Eintritt von Luft ermöglichen, die durch den Spalt zwischen der Verblendung und dem Einbaurahmen und dann über den Rand der verblendung hinweg in Richtung des Reflektors strömt. Dabei können die Öffnungen im Bereich der Verblendung ausgebildet sein.The openings in the region of the reflector side walls may be formed so as to allow the entry of air which flows through the gap between the veneer and the mounting frame and then over the edge of the veneer in the direction of the reflector. In this case, the openings may be formed in the region of the veneer.
Es ist ebenfalls möglich, dass der Reflektor ausgebildet ist, um eine Batwing-Lichtverteilung zu erzeugen. Dies ist insbesondere vorteilhaft, wenn die Leuchte zur Beleuchtung von langgestreckten Warenpräsentationsflächen eingesetzt werden soll.It is also possible that the reflector is designed to produce a batwing light distribution. This is particularly advantageous when the lamp is to be used for the illumination of elongated goods presentation areas.
In Weiterbildung der Erfindung ist vorgesehen, die Reflektorrückwand und/oder die Reflektorseitenwände mit einer diffusen Oberfläche zu versehen, welche die auftreffende Strahlung gestreut reflektiert. Auf diese Weise ist zusätzlich die Rückstrahlung vom Reflektor auf den Brenner der Hochdruckentladungslampe vermindert.In a development of the invention, it is provided to provide the reflector rear wall and / or the reflector side walls with a diffuse surface which reflects the incident radiation in a scattered manner. In this way, in addition, the reflection from the reflector is reduced to the burner of the high-pressure discharge lamp.
Gemäß einer weiteren Ausführungsform der Erfindung kann die verschlussplatte als Filter ausgebildet sein, der Teile der Strahlung absorbiert oder reflektiert. Hierdurch kann auf einfache weise das von der Leuchte abgegebene Lichtspektrum angepasst werden. So können bestimmte Farbkomponenten oder Strahlung ausgefiltert bzw. reflektiert werden, die beispielsweise bei der Beleuchtung von Warenpräsentationsflächen unerwünscht sind.According to a further embodiment of the invention, the closure plate may be formed as a filter which absorbs or reflects parts of the radiation. As a result, the light spectrum emitted by the luminaire can be adapted in a simple manner. Thus, certain color components or radiation can be filtered out or reflected, which are undesirable, for example, in the illumination of goods presentation areas.
Der Brenner der Hochdruckentladungslampe kann in liegender oder stehender Brennlage innerhalb des Reflektors angeordnet sein.The burner of the high-pressure discharge lamp can be arranged in a horizontal or stationary burning position within the reflector.
Die Erfindung wird im folgenden unter Bezugnahme auf die Zeichnungen detailliert anhand von zwei Ausführungsbeispielen beschrieben. In den Zeichnungen zeigen:
Figur 1- eine schematische Darstellung einer ersten erfindungsgemäßen Leuchte,
Figur 2- eine seitliche Ansicht eines Ausschnittes der Leuchte der
, undFigur 1 Figur 3- eine seitliche Ansicht einer zweiten erfindungsgemäßen Leuchte.
- FIG. 1
- a schematic representation of a first lamp according to the invention,
- FIG. 2
- a side view of a section of the light of the
FIG. 1 , and - FIG. 3
- a side view of a second lamp according to the invention.
In den
Die erste Leuchte 1 umfasst ein Hochdruckentladungslampe 7, die mit einem Brenner 8 versehen ist. Der Brenner 8 ist in liegender Brennlage innerhalb des Reflektors 2 parallel und beabstandet zu der Reflektorrückwand 3 angeordnet. In einem dem Brenner 8 gegenüberliegenden Bereich der Reflektorrückwand 3 sind zwei Aussparungen 9 ausgebildet, die zusammen in ihrer Form und Größe an die Kontur des Brenners 8 angepasst sind.The
Die Lichtaustrittsöffnung 5 ist mit einem Filter 10 verschlossen, der ausgebildet ist, um bestimmte Komponenten der von der Hochdruckentladungslampe 7 abgegebenen Strahlung auszufiltern.The
Der Reflektor 2 ist von einer Verblendung 11 eingefasst, die wiederum in einem Einbaurahmen 12 gehalten wird. Zwischen der Verblendung 11 und dem Einbaurahmen 12 ist ein Spalt 13 ausgebildet, der das Einströmen von Luft ermöglicht. Der Einbaurahmen 12 weist in der Zeichnung nicht gezeigte Halteelemente auf, die ein lösbares Befestigen des Einbaurahmens 10 an wandbereichen 14 ermöglicht.The
Während des Betriebs der Leuchte 1 strömt, wie in der
Die erwärmte Luft strömt innerhalb des Reflektors 2 in Richtung der Reflektorrückwand 3 und tritt anschließend durch die Aussparungen 9 in der Reflektorrückwand 3 aus. Der hier beschriebene Weg der Luft in die Leuchte 1 hinein und aus ihr heraus ist in der
Aufgrund der Anordnung des Spaltes 13, der Öffnungen 6 sowie der Aussparungen 9 entsteht ein Kamineffekt, so dass eine besonders große Menge an Luft durch die Leuchte hindurch strömt, was zu einer intensiven Kühlung des Brenners 7 führt.Due to the arrangement of the gap 13, the openings 6 and the
Weiterhin sind hier die Aussparungen 9 in der Reflektorrückwand 3 derart ausgebildet, dass nur ein geringer Teil Strahlung von der Reflektorrückwand 3 direkt auf den Brenner 8 reflektiert wird. So tritt ein Großteil der Strahlung, die auf den Brenner 8 zurück reflektiert werden könnte, aus den Aussparungen 9 aus dem Reflektor aus. Damit geht diese Strahlung zwar der Leuchte 1 verloren, allerdings hat sich gezeigt, dass dieser Leuchtkraftverlust durch eine verbesserte Leuchtleistung des Brenners 8 auf Grund von dessen geringer Temperatur mehr als kompensiert wird.Furthermore, here the
Insgesamt betrachtet kann bei der ersten erfindungsgemäßen Leuchte 1 der Reflektor 2 exakt an die Größe der Hochdruckentladungslampe 7 angepasst werden, da sichergestellt ist, dass der Brenner 8 trotz der geringen Ausmaße des Reflektors 2 ausreichend gekühlt wird.Overall, in the
In der
Die Leuchte 1 der
Auch die zweite Leuchte 1 wird von Luft durchströmt, so dass der Brenners 8 der Hochdruckentladungslampe 7 ausreichend gekühlt wird.Also, the
Claims (12)
- A luminaire (1) having a reflector (2) that comprises an upper reflector rear wall (3) and reflector side walls (4) that define a lower light exit opening (5), and having a high-pressure discharge lamp (7) having an element (8) that is arranged inside the reflector (2),
wherein there is present in the reflector rear wall (3) at least one cutout (9) that enables air and radiation to exit from the reflector (2); and in the region of the reflector side walls (4), openings (13) are present that enable ambient air to enter the reflector (2), characterized in that the cutout or cutouts (9) are configured in a region of the reflector rear wall (3) located opposite the element (8) and have a shape and size that are substantially adapted to the contour of the element (8). - The luminaire (1) according to Claim 1, characterized in that the light exit opening (5) is closed off with a closure plate (10) that is embodied to be transparent to radiation.
- The luminaire (1) according to Claim 2, wherein the openings (6) are configured as an at least partially circumferential gap (15) between the lower end region of the reflector side walls (4) and the closure plate (10).
- The luminaire (1) according to Claim 2 or 3, wherein the closure plate (10) is embodied as a filter that absorbs or reflects portions of the radiation.
- The luminaire (1) according to one of the preceding claims, wherein the openings (6) are configured in the lower third of the reflector side walls (4), above the light exit opening (5).
- The luminaire (1) according to one of the preceding claims, wherein the openings (6) are configured in the reflector side walls (4) in a ring shape.
- The luminaire (1) according to one of the preceding claims, wherein a facing (11) that encloses the reflector (2), and an installation frame (12) in which the facing (11) is held, are provided; and at least one opening, in the form of a gap (13) that permits air to flow in, is configured between the facing (11) and the installation frame (12).
- The luminaire (1) according to Claim 7, wherein the openings (6) in the reflector side walls (4) are configured in order to enable the entry of air, which flows through the gap (13) between the facing (11) and the installation frame (12) and then over the edge of the facing (11) in the direction of the reflector (2).
- The luminaire (1) according to Claim 8, wherein the openings (6) are configured in the reflector side walls (4) in the region of the facing (11).
- The luminaire (1) according to one of the preceding claims, wherein the reflector (2) is configured so as to generate a bat-wing light distribution.
- The luminaire (1) according to one of the preceding claims, wherein the reflector rear wall (3) and/or the reflector side walls (4) have a diffuse surface that reflects incident radiation in scattered fashion.
- The luminaire (1) according to one of the preceding claims, wherein the element (8) of the high-pressure discharge lamp (7) is arranged in a horizontal or vertical operating position inside the reflector (2).
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07012929A EP2012057B1 (en) | 2007-07-03 | 2007-07-03 | Lamp |
DE502007003605T DE502007003605D1 (en) | 2007-07-03 | 2007-07-03 | lamp |
AT07012929T ATE466237T1 (en) | 2007-07-03 | 2007-07-03 | LAMP |
US12/143,154 US20090010003A1 (en) | 2007-07-03 | 2008-06-20 | Luminaire |
CA002636095A CA2636095A1 (en) | 2007-07-03 | 2008-06-25 | Luminaire |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07012929A EP2012057B1 (en) | 2007-07-03 | 2007-07-03 | Lamp |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2012057A1 EP2012057A1 (en) | 2009-01-07 |
EP2012057B1 true EP2012057B1 (en) | 2010-04-28 |
Family
ID=38669831
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07012929A Not-in-force EP2012057B1 (en) | 2007-07-03 | 2007-07-03 | Lamp |
Country Status (5)
Country | Link |
---|---|
US (1) | US20090010003A1 (en) |
EP (1) | EP2012057B1 (en) |
AT (1) | ATE466237T1 (en) |
CA (1) | CA2636095A1 (en) |
DE (1) | DE502007003605D1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10380604B2 (en) * | 2008-07-17 | 2019-08-13 | International Business Machines Corporation | Method and system for viral marketing within a virtual world |
US7914171B2 (en) * | 2008-11-06 | 2011-03-29 | Koninklijke Philips Electronics N.V. | Air-handling luminaire |
US8725706B2 (en) * | 2010-03-26 | 2014-05-13 | Nokia Corporation | Method and apparatus for multi-item searching |
CA170043S (en) * | 2016-03-02 | 2017-03-23 | Dyson Technology Ltd | Lighting fixture |
CA170038S (en) * | 2016-03-02 | 2017-03-23 | Dyson Technology Ltd | Lighting fixture |
CA170044S (en) * | 2016-03-02 | 2017-03-23 | Dyson Technology Ltd | Lighting fixture |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1004292B (en) * | 1954-03-26 | 1957-03-14 | Siemens Ag | As a table or hanging lamp, in particular a lamp with a xenon high-pressure discharge lamp designed as a color test device |
US3259739A (en) * | 1964-01-06 | 1966-07-05 | Edwin F Guth Company | Luminaire with siamese domed reflector |
US3701895A (en) | 1971-06-30 | 1972-10-31 | Thomas Industries Inc | Combined lighting and ventilating fixture |
DE3318264A1 (en) * | 1983-05-19 | 1984-11-22 | Dr. Ing. Willing GmbH, 1000 Berlin | Lighting fixture with perforated mirror-finished reflector |
ES2246937T3 (en) | 2001-01-19 | 2006-03-01 | BA*RO GMBH & CO. KG | INTERIOR LIGHTING DEVICE, ESPECIALLY FOR LIGHTING SURFACES OF PRESENTATION OF ARTICLES. |
DE20202558U1 (en) * | 2002-02-19 | 2003-07-03 | Zumtobel Staff GmbH & Co. KG, 32657 Lemgo | Konvektionsreflektor |
US6698908B2 (en) * | 2002-03-29 | 2004-03-02 | Lexalite International Corporation | Lighting fixture optical assembly including relector/refractor and collar for enhanced directional illumination control |
DE202004015744U1 (en) * | 2004-10-12 | 2004-12-23 | Hahn, Hermann, Prof. Dr.-Ing. | Air cooling system for lamps using upwards thrust has air inlet openings in lower part of the lamp and reflector and edge opening in any upper cover |
JP2006267622A (en) * | 2005-03-24 | 2006-10-05 | Sony Corp | Lamp cooling device and projection type display device |
-
2007
- 2007-07-03 AT AT07012929T patent/ATE466237T1/en active
- 2007-07-03 DE DE502007003605T patent/DE502007003605D1/en not_active Expired - Fee Related
- 2007-07-03 EP EP07012929A patent/EP2012057B1/en not_active Not-in-force
-
2008
- 2008-06-20 US US12/143,154 patent/US20090010003A1/en not_active Abandoned
- 2008-06-25 CA CA002636095A patent/CA2636095A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE502007003605D1 (en) | 2010-06-10 |
ATE466237T1 (en) | 2010-05-15 |
EP2012057A1 (en) | 2009-01-07 |
US20090010003A1 (en) | 2009-01-08 |
CA2636095A1 (en) | 2009-01-03 |
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